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History log of /src/sys/dev/rasops
RevisionDateAuthorComments
 1.2 11-Apr-2001  jdolecek Only install headers which are actually used by our userland. This
saves about 2.2MB under /usr/include/dev/. Discussed on tech-kern@
recently.

I HOPE to get the list right. The headers I left in are ones
used for MI tools and those whose usage I discovered by grep over tree sources.
Feel free to put needed includes back in if you encounter anything which
should not be removed from lists.
 1.1 13-Apr-1999  ad branches: 1.1.2; 1.1.4; 1.1.16;
Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.1.16.1 28-Feb-2002  nathanw Catch up to -current.
 1.1.4.1 21-Apr-2001  bouyer Sync with HEAD
 1.1.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.7 02-Aug-2019  rin Reflect reality.
 1.6 02-Dec-2013  tsutsui branches: 1.6.30; 1.6.36;
Fix 1 bpp rasops copycols() op:

- fix inverted shift direction in MBL() and MBR() macro in BE case
(used by GETBITS() and PUTBITS() in copycols() function in rasops_bitops.h)
- make all bitmask values unsigned and use proper uint32_t types for
bitmap variables (to avoid arithmetic right shift)
- fix various botches in right-to-left copy op (logic is taken from hp300)

Tested on bwtwo(4) on NetBSD/sparc.
 1.5 07-Jan-2008  bjs branches: 1.5.44; 1.5.54; 1.5.60;
The stamp mutex is not unsafe, so remove this comment so people don't get the wrong idea. ok ad@
 1.4 07-Oct-1999  ad branches: 1.4.50; 1.4.108; 1.4.114; 1.4.122;
Note some ideas from Toru Nishimura.
 1.3 24-Aug-1999  ad branches: 1.3.2;
- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes
 1.2 26-Apr-1999  ad branches: 1.2.2;
Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.3.2.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.4.122.1 08-Jan-2008  bouyer Sync with HEAD
 1.4.114.1 18-Feb-2008  mjf Sync with HEAD.
 1.4.108.1 09-Jan-2008  matt sync with HEAD
 1.4.50.1 21-Jan-2008  yamt sync with head
 1.5.60.1 18-May-2014  rmind sync with head
 1.5.54.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.5.44.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.6.36.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.6.30.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.13 11-Jan-2012  macallan make rasops_init()'s font selection code a bit less boneheaded by:
- actually trying to pick a font which gets as close as possible to the
requested terminal size
- accepting 0,0 as 'use system default' which can be changed by
options RASOPS_DEFAULT_WIDTH=100
options RASOPS_DEFAULT_HEIGHT=30
default is 80x25
- putting alpha and bitmap fonts in the same list and making wsfont_find()
aware of wether we support alpha fonts or not
- if supported, prefer alpha fonts over otherwise equally suitable bitmap
fonts
 1.12 02-Feb-2007  ober branches: 1.12.80; 1.12.84;
Updates to allow Zaurus screen to rotate 90 degrees to a usable state with the keyboard. Patch from peter@ copied from OpenBSD. Feedback and OK from matt@
 1.11 11-Dec-2005  christos branches: 1.11.20;
merge ktrace-lwp.
 1.10 27-Feb-2005  perry branches: 1.10.4;
nuke trailing whitespace
 1.9 28-Nov-2001  lukem branches: 1.9.16; 1.9.24; 1.9.26;
- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups
 1.8 15-Feb-2001  sato branches: 1.8.2; 1.8.4;
rasops4.c depend on rasops_masks.c
 1.7 21-Jan-2001  takemura Rasops supports 4bit depth.
 1.6 20-Apr-2000  thorpej Put the rasops attributes in conf/files so that everyone can run
config(8) without pulling in files.rasops. There is prior art for
this, e.g. audio.
 1.5 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.4 05-Jun-1999  pk branches: 1.4.2; 1.4.4; 1.4.6; 1.4.8;
`rasops_glue' is only here to force the header file's name hence it must
be mentioned first in the expression.

Shudder..
 1.3 02-Jun-1999  christos Don't include rasops files unconditionally; only when we have rasterconsole or
wsdisplay.
 1.2 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.4.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.4.6.1 15-Nov-1999  fvdl Sync with -current
 1.4.4.3 12-Mar-2001  bouyer Sync with HEAD.
 1.4.4.2 11-Feb-2001  bouyer Sync with HEAD.
 1.4.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.4.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.8.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.8.2.1 08-Jan-2002  nathanw Catch up to -current.
 1.9.26.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.9.24.1 29-Apr-2005  kent sync with -current
 1.9.16.1 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.10.4.1 26-Feb-2007  yamt sync with head.
 1.11.20.1 09-Feb-2007  ad Sync with HEAD.
 1.12.84.1 18-Feb-2012  mrg merge to -current.
 1.12.80.1 17-Apr-2012  yamt sync with head
 1.128 15-May-2022  uwe rasops: fix automagic box chars for stride > 1 on little endian

This makes DEC line drawing (acsc) work correctly for "iso" fonts of
large sizes, e.g. spleen16x32 on x86.
 1.127 15-May-2022  uwe rasops_mapchar: cosmetics, same object code.

Don't hide the important function call inside an if condition. Don't
reuse a variable, changing what it means in the middle of an
expression.
 1.126 15-May-2022  uwe rasops: make autogenerated box drawing chars actually used

Fix mapchar to use PICK_FONT() to match what putchar does. Otherwise
putchar will never get to see the glyph codes for the autogenerated
box drawing chars.
 1.125 24-Dec-2021  jmcneill wsfb: Prefer wide fonts when EDID data is available.

To give us a better chance of picking a readable font, prefer fonts that
will render at least 3mm wide instead of picking the font that will be
closest to that size.
 1.124 04-Oct-2021  rin rasops_reconfig: Do not abort even if font stride is not supported by
rasops_make_box_chars_*() functions; Stop using ri_optfont instead.

XXX
Add rasops_make_box_chars_24().
 1.123 02-Jul-2020  rin Remove pointless cast; dp is already uint32_t *.
No functional changes intended.
 1.122 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.121 10-Aug-2019  rin Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).
 1.120 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.119 09-Aug-2019  rin Fix color range overflow; we cannot make bright colors more brighter.
 1.118 09-Aug-2019  rin When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.
 1.117 07-Aug-2019  rin Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.

Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.

Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.

Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.
 1.116 07-Aug-2019  rin If RI_CLEAR is set, do not forget to clear real framebuffer.
 1.115 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.114 07-Aug-2019  rin Simplify rasops_do_cursor():

- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.
 1.113 07-Aug-2019  rin Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90

When src < dst, we have to copy backward.
 1.112 07-Aug-2019  rin Depth 2 is monochrome.

IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.
 1.111 07-Aug-2019  rin Fix black color-attribution for depths 2 and 4.
 1.110 07-Aug-2019  rin Simplify calculation for 12-byte alignment.
No functional changes.
 1.109 07-Aug-2019  rin Use _KERNEL_OPT.
 1.108 02-Aug-2019  rin Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).
 1.107 02-Aug-2019  rin Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105
 1.106 02-Aug-2019  rin Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
 1.105 31-Jul-2019  rin Provide buffer capable of single-row pixels in order to make things simpler.

XXX
Bump kernel version for rasops_info later.
 1.104 31-Jul-2019  rin G/C ri_delta.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.103 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.102 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.101 30-Jul-2019  rin branches: 1.101.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.100 30-Jul-2019  rin In rasops_copy{rows,cols}(), if src == dst, we have nothing to do.
Otherwise, we can use memcpy safely instead of memmove.
 1.99 30-Jul-2019  rin Fix catastrophe when ri_emustride != ri_stride in rasops_copyrows().
 1.98 30-Jul-2019  rin Treat highlighted and reversed text in the same manner to xterm.
 1.97 29-Jul-2019  rin Hmmm, color was still strange for 24bpp on little endian machine,
only when font width is 12.

We need to use different devcmap for that case, if we wish to share
codes for other depths/font widths as possible as we can.

XXX
What should we do for big endian? I have no big endian machines with
24bpp framebuffer...
 1.96 29-Jul-2019  rin Fix color on 24bpp screen for little endian.
 1.95 29-Jul-2019  rin Fix missing underlines on mono screen.
Style.
 1.94 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.93 28-Jul-2019  martin Free kmem_alloc'd memory with kmem_free
 1.92 26-Jul-2019  rin Put back byte-wise copy to stop using memcpy, which
does not work for device memory on some platforms.

Pointed out by Jared, many thanks!
 1.91 26-Jul-2019  rin Add genfb(4) driver for mac68k grfbus.
1, 2, 4, 8, 15, and 32 color-depths are supported.

ANSI colors on console are functional for depth >= 4.

Graphic applications based on wsfb API should work, provided
they can correctly handle fbi_fboffset and your color depth.

wsfb driver of Xorg 1.20 and mlterm-fb (framebuffer version of
x11/mlterm) work fine for depth == 1 || depth >= 8.

For depth == 8 (256 colors), graphic applications require
colormap callback, which is currently supported for some
internal graphic adapters, and only Civic (found on Quadra
AV series) was tested. Register definition and its usage are
taken from Linux. You can easily support other adapters if
Linux supports that.

Have fun, and any problem reports are welcomed!
 1.90 26-Jul-2019  rin Replace manually unrolled loops with memcpy/memmove or simple loops.
Modern compilers are smart enough; there's no measurable changes in
performance even on MC68040 with optimization level -Os.

Also, convert loop of byte-wise copy into memset.
 1.89 26-Jul-2019  rin Misc creen up for rasops.c:

- sort headers
- return error value instead of panic
- use uintptr_t for cast pointer to integer
- use macros appropriately
- use __func__
- some consistency check ifndef DEBUG
- try to avoid undefined behaviors related to shift
- convert malloc/free to kmem_alloc/kmem_free
- convert MIN to uimin
- style
 1.88 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.87 25-Jul-2019  rin For kUBSan, avoid undefined behaviors even if harmless.
No functional changes intended.

Requested by uwe.
 1.86 24-Jul-2019  rin Oops, revert unintentional changes.
 1.85 24-Jul-2019  rin Well, masks do not have to be updated every time in loop.
Calculate them in advance even if it may be bogus.
 1.84 24-Jul-2019  rin Simplify logic and tiny clean-up.
 1.83 24-Jul-2019  rin Avoid shift-count overflow to fix strange cursor behaviors on amd64
when font width is odd.
 1.82 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.81 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.80 21-Jul-2019  rin Fix cursor movement for ri_xscale = 1, e.g., fontwidth = 8 and bpp = 1.
 1.79 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.78 29-Nov-2018  macallan rasops_do_cursor():
- simplify & sanitize the unaligned case
- use only 32bit accesses
... no longer crash with odd sized fonts in 8bit
 1.77 01-Jun-2017  chs branches: 1.77.8; 1.77.10;
remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.
 1.76 12-May-2017  macallan rasops_reconfig(): don't clear flags we won't set here
 1.75 22-Apr-2017  macallan branches: 1.75.2;
add RI_PREFER_ALPHA flag, for drivers that can draw such fonts by hardware
 1.74 23-Feb-2017  nonaka reset ri->ri_hwbits too if RI_CFGDONE is set.

prevent ri->ri_hwbits from moving to center every time rasops_reconfig() is
called when RI_CENTER is set.
 1.73 18-Apr-2015  mlelstv branches: 1.73.2; 1.73.4;
add "best match" algorithm to wsfont and use this instead of a private
function in rasops.
 1.72 18-Aug-2014  riastradh branches: 1.72.2;
Don't leak f on failure. Noted by maxv@.

Compile-tested only, with zaurus.
 1.71 19-Apr-2012  macallan branches: 1.71.2; 1.71.14;
add another convenience function:
rasops_get_cmap() which returns either the ANSI map or an R3G3B2 map,
depending on the rasops_info handed to it so drivers don't have to
duplicate this particular code snippet
 1.70 11-Jan-2012  macallan branches: 1.70.2; 1.70.6; 1.70.8;
make rasops_init()'s font selection code a bit less boneheaded by:
- actually trying to pick a font which gets as close as possible to the
requested terminal size
- accepting 0,0 as 'use system default' which can be changed by
options RASOPS_DEFAULT_WIDTH=100
options RASOPS_DEFAULT_HEIGHT=30
default is 80x25
- putting alpha and bitmap fonts in the same list and making wsfont_find()
aware of wether we support alpha fonts or not
- if supported, prefer alpha fonts over otherwise equally suitable bitmap
fonts
 1.69 04-Jan-2012  macallan rasops8 expects the colour value replicated in every byte in devcmap[], so
fix that for r3g3b2
 1.68 28-Dec-2011  macallan add a new flag for ri_flg to allow drivers to request an r3g3b2 devcmap
in 8 bit colour. Drivers are still responsible to generate an appropriate
colour map for the actual hardware.
For use with alpha blending which needs some sort of 'true' colour.
 1.67 22-Dec-2011  macallan support anti-aliased fonts ( as in, pre-rendered alpha maps ), for now only
in rasops32 although adding support in 15, 16 and 24 would be trivial.
Enabled only if the driver explicitly requests it by setting the
RI_ENABLE_ALPHA flag.
 1.66 21-Jul-2010  tsutsui branches: 1.66.8; 1.66.12;
Fix typo in comment.
 1.65 13-Jun-2010  tsutsui Put underline properly (not upperline) on CCW screen.
Tested on hpcarm WS003SH.
 1.64 06-May-2010  macallan Introduce a new flag for rasops_info to keep rasops_reconfig() from trying
to allocate memory. Use this when calling rasops_reconfig() before it is safe
to call kmem_alloc().
 1.63 04-May-2010  macallan autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.62 17-Apr-2010  nonaka Added Sharp W-ZERO3 series support.
 1.61 21-Jan-2010  macallan branches: 1.61.2; 1.61.4;
make RI_CENTER and RI_FULLCLEAR work with a shadow framebuffer
 1.60 14-Mar-2009  dsl ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.59 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.58 28-Apr-2008  martin branches: 1.58.8; 1.58.14;
Remove clause 3 and 4 from TNF licenses
 1.57 09-Dec-2007  jmcneill branches: 1.57.10; 1.57.12; 1.57.14;
Merge jmcneill-pm branch.
 1.56 28-Jul-2007  mjf branches: 1.56.4; 1.56.6; 1.56.14; 1.56.16; 1.56.18;
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
 1.55 02-Feb-2007  ober branches: 1.55.6; 1.55.14;
Updates to allow Zaurus screen to rotate 90 degrees to a usable state with the keyboard. Patch from peter@ copied from OpenBSD. Feedback and OK from matt@
 1.54 16-Nov-2006  christos branches: 1.54.2; 1.54.4;
__unused removal on arguments; approved by core.
 1.53 12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.52 27-Feb-2006  jmcneill branches: 1.52.14; 1.52.16;
Fixup a performance problem in rasops_copyrows that I introduced during
the shadowfb merge.
 1.51 18-Feb-2006  jmcneill Add shadow framebuffer support.
 1.50 29-Jan-2006  dsl branches: 1.50.2; 1.50.4;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h
 1.49 11-Dec-2005  christos branches: 1.49.2;
merge ktrace-lwp.
 1.48 02-May-2005  macallan branches: 1.48.2;
fixed tab width and formatting
 1.47 01-May-2005  macallan made rasops_allocattr_color() respect WS_DEFAULT_FG and WS_DEFAULT_BG instead of using white on black
 1.46 27-Feb-2005  perry branches: 1.46.2;
nuke trailing whitespace
 1.45 04-Feb-2005  perry de-__P
 1.44 08-Nov-2003  uwe branches: 1.44.2; 1.44.6; 1.44.8; 1.44.10; 1.44.12;
For the rasops-drawn cursor the fg/bg indices are bit inverted, so
provide complimentary colors in the upper 16 entries.
 1.43 03-May-2003  uwe branches: 1.43.2;
In rasops_copycols change bcopy to memmove. In that particular place
the src and dst are very likely to overlap, so using bcopy causes
garbage to be displayed
 1.42 27-Sep-2002  provos remove trailing \n in panic(). approved perry.
 1.41 04-Jul-2002  junyoung Rename rasops_alloc_cattr and rasops_alloc_mattr to
rasops_allocattr_color and rasops_allocattr_mono, respectively.
 1.40 04-Jul-2002  junyoung alloc_attr -> allocattr

Approved by Matthias Drochner.
 1.39 13-Mar-2002  ad branches: 1.39.4;
Reorganise the wsfont stuff slightly so that multiple display adapters
with different bit/byte order requirements can co-exist happily.
 1.38 15-Nov-2001  lukem don't need <sys/types.h> when including <sys/param.h>
 1.37 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.36 12-Feb-2001  nathanw branches: 1.36.2; 1.36.4; 1.36.6;
Correct the ri_xorigin calculation for the RI_CENTER case again.

Original calculation (bits += (ri_stride - ri_emustride) / 2) was
incorrect because stride may be wider than visible width.

Fix in 1.33 (bits += (ri_width - ri_emustride) / 2) was incorrect
because units do not match; "bits" and "ri_emustride" are in bytes,
but "width" is in pels. Works by accident for 8bpp displays.

Change to bits += ((ri_width * bpp / 8) - ri_emustride) / 2
to correctly account for visible width and bpp.
 1.35 02-Feb-2001  marcus Now does character remapping depending on font encoding.
 1.34 21-Jan-2001  takemura Rasops supports 4bit depth.
 1.33 19-Dec-2000  nisimura Fix an error in xoffset calculation. Revealed in the case when
ri_width is less than ri_stride and screen is layouted RI_CENTERed.
 1.32 13-Jun-2000  ad Use my proper name.
 1.31 12-Jun-2000  sommerfeld Let this build on LP64 if DEBUG is defined.
 1.30 12-Apr-2000  pk branches: 1.30.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.29 05-Apr-2000  nathanw Advance index into rasops_cmap for each color, not per triplet.
This makes highlighing and color possible on truecolor displays.
 1.28 04-Apr-2000  nathanw Fix computation of ri_xorigin in RI_CENTER case; convery from bytes to
pixels, not from bytes to bytes^2/pixel.
 1.27 14-Mar-2000  nisimura Resolve LP64 issues.
 1.26 06-Jan-2000  shin replace WSFONT_L2R by WSDISPLAY_FONTORDER_L2R to compile again.
 1.25 16-Dec-1999  ad Dispatch another nit.
 1.24 04-Dec-1999  drochner -use the right namespace for screen capabilities
-make attribute decomposing a bit more friendly if the caller doesn't
care about underlines
 1.23 02-Dec-1999  drochner -initialize the colormap completely at compile time, to allow drivers
to use it early
-now we can declare it "const" (as "rasops_isgray[]", while we are here)
-don't use the fg/bg colors in ...alloc_attr() if the WSATTR_WSCOLORS
flag was not given - use reasonable defaults instead
-add an opaque "ri_hw" member to "rasops_info", for driver use
 1.22 06-Nov-1999  enami Possible typo.
 1.21 05-Nov-1999  ad In rasops_do_cursor(), don't pull the mask from ri_devcmap[], just use ~0.
Needed to make cursor DTRT on NetBSD/hpcmips - from takemura.
 1.20 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.19 04-Oct-1999  ad branches: 1.19.2; 1.19.4; 1.19.6;
Use proper mask when RI_FORCEMONO is set and XORing cursor.
 1.18 17-Sep-1999  ad - Collapse forward and reverse cases in rasops_copyrows() into one
- Pull in opt_rasops.h so we know if clipping is enabled
- Some KNF
 1.17 17-Sep-1999  ad Clean up attribute allocation some more.
 1.16 26-Aug-1999  thorpej Small consistency nit.
 1.15 26-Aug-1999  thorpej Make monochrome attribte allocation a bit more obvious.
 1.14 25-Aug-1999  ad When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.
 1.13 24-Aug-1999  ad - Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes
 1.12 21-Jul-1999  ad - Style nits
- Kill some of the dainbramage in variable-depth copycols()
 1.11 15-Jun-1999  ad branches: 1.11.2;
- Don't even try to emulate WSATTR_HILIT on mono displays
- WSATTR_REVERSE is a capability of both mono/color
 1.10 15-Jun-1999  ad Fix stupid alignment bug. The 'slop' stuff is due for replacement with masks
RSN per the README.
 1.9 18-May-1999  ad Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.8 15-May-1999  ad Add diagnostic measures to check for missing font.
 1.7 15-May-1999  ad wsfont cookies <= 0 are invalid, not just those < 0.
 1.6 09-May-1999  ad In rasops_erasecols(), try word aligned case before halfword aligned.
 1.5 29-Apr-1999  ad Add cookie for wsfont to rasops_info.
 1.4 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.3 13-Apr-1999  ad Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.11.2.3 02-Aug-1999  thorpej Update from trunk.
 1.11.2.2 21-Jun-1999  thorpej Sync w/ -current.
 1.11.2.1 15-Jun-1999  thorpej file rasops.c was added on branch chs-ubc2 on 1999-06-21 01:19:00 +0000
 1.19.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.19.4.1 15-Nov-1999  fvdl Sync with -current
 1.19.2.4 12-Mar-2001  bouyer Sync with HEAD.
 1.19.2.3 11-Feb-2001  bouyer Sync with HEAD.
 1.19.2.2 05-Jan-2001  bouyer Sync with HEAD
 1.19.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.30.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.36.6.1 01-Oct-2001  fvdl Catch up with -current.
 1.36.4.4 10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.36.4.3 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.36.4.2 16-Mar-2002  jdolecek Catch up with -current.
 1.36.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.36.2.5 18-Oct-2002  nathanw Catch up to -current.
 1.36.2.4 01-Aug-2002  nathanw Catch up to -current.
 1.36.2.3 01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.36.2.2 08-Jan-2002  nathanw Catch up to -current.
 1.36.2.1 21-Sep-2001  nathanw Catch up to -current.
 1.39.4.1 15-Jul-2002  gehenna catch up with -current.
 1.43.2.6 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.43.2.5 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.43.2.4 04-Feb-2005  skrll Sync with HEAD.
 1.43.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.43.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.43.2.1 03-Aug-2004  skrll Sync with HEAD
 1.44.12.1 12-Aug-2007  bouyer Pull up following revision(s) (requested by mjf in ticket #11348):
Pull up following revision(s) (requested by mjf in ticket #11348):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.44.10.2 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.44.10.1 12-Feb-2005  yamt sync with head.
 1.44.8.1 29-Apr-2005  kent sync with -current
 1.44.6.1 11-Aug-2007  bouyer Pull up following revision(s) (requested by mjf in ticket #11348):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.44.2.1 12-Aug-2007  bouyer Pull up following revision(s) (requested by mjf in ticket #11348):
Pull up following revision(s) (requested by mjf in ticket #11348):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.46.2.2 06-Aug-2007  ghen Pull up following revision(s) (requested by mjf in ticket #1815):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.46.2.1 03-Jun-2005  riz branches: 1.46.2.1.2; 1.46.2.1.4;
Pull up revisions 1.47-1.48 (requested by martin in ticket #366):
1.47:
made rasops_allocattr_color() respect WS_DEFAULT_FG and WS_DEFAULT_BG instead of using white on black

1.48:
fixed tab width and formatting
 1.46.2.1.4.1 06-Aug-2007  ghen Pull up following revision(s) (requested by mjf in ticket #1815):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.46.2.1.2.1 06-Aug-2007  ghen Pull up following revision(s) (requested by mjf in ticket #1815):
sys/dev/ic/pcdisplay_subr.c: revision 1.33 via patch
sys/dev/ic/vga_raster.c: revision 1.29 via patch
sys/dev/ic/vga.c: revision 1.95 via patch
sys/dev/rasops/rasops.c: revision 1.56 via patch
sys/dev/isa/ega.c: revision 1.23 via patch
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.48.2.5 21-Jan-2008  yamt sync with head
 1.48.2.4 03-Sep-2007  yamt sync with head.
 1.48.2.3 26-Feb-2007  yamt sync with head.
 1.48.2.2 30-Dec-2006  yamt sync with head.
 1.48.2.1 21-Jun-2006  yamt sync with head.
 1.49.2.3 01-Mar-2006  yamt sync with head.
 1.49.2.2 18-Feb-2006  yamt sync with head.
 1.49.2.1 01-Feb-2006  yamt sync with head.
 1.50.4.1 22-Apr-2006  simonb Sync with head.
 1.50.2.1 09-Sep-2006  rpaulo sync with head
 1.52.16.2 10-Dec-2006  yamt sync with head.
 1.52.16.1 22-Oct-2006  yamt sync with head
 1.52.14.2 09-Feb-2007  ad Sync with HEAD.
 1.52.14.1 18-Nov-2006  ad Sync with head.
 1.54.4.1 03-Sep-2007  wrstuden Sync w/ NetBSD-4-RC_1
 1.54.2.1 30-Jul-2007  liamjfoy Pull up following revision(s) (requested by mjf in ticket #799):
sys/dev/ic/pcdisplay_subr.c: revision 1.33
sys/dev/wscons/wsdisplay_vcons.c: revision 1.12
sys/dev/wscons/wsdisplay_vcons.c: revision 1.13
sys/dev/ic/vga_raster.c: revision 1.29
sys/dev/pci/chipsfb.c: revision 1.10
sys/dev/ic/vga.c: revision 1.95
sys/dev/rasops/rasops.c: revision 1.56
sys/dev/isa/ega.c: revision 1.23
Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
Set the 'ri' pointer before use.
 1.55.14.1 15-Aug-2007  skrll Sync with HEAD.
 1.55.6.1 20-Aug-2007  ad Sync with HEAD.
 1.56.18.2 28-Jul-2007  mjf Implement bounds checking in some places in display driver code to avoid
the possibility of a local user panic.
 1.56.18.1 28-Jul-2007  mjf file rasops.c was added on branch matt-mips64 on 2007-07-28 20:28:58 +0000
 1.56.16.1 11-Dec-2007  yamt sync with head.
 1.56.14.1 26-Dec-2007  ad Sync with head.
 1.56.6.1 09-Jan-2008  matt sync with HEAD
 1.56.4.1 03-Aug-2007  jmcneill Pull in power management changes from private branch.
 1.57.14.4 11-Aug-2010  yamt sync with head.
 1.57.14.3 11-Mar-2010  yamt sync with head
 1.57.14.2 04-May-2009  yamt sync with head.
 1.57.14.1 16-May-2008  yamt sync with head.
 1.57.12.1 18-May-2008  yamt sync with head.
 1.57.10.1 02-Jun-2008  mjf Sync with HEAD.
 1.58.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.58.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.61.4.3 05-Mar-2011  rmind sync with head
 1.61.4.2 03-Jul-2010  rmind sync with head
 1.61.4.1 30-May-2010  rmind sync with head
 1.61.2.2 17-Aug-2010  uebayasi Sync with HEAD.
 1.61.2.1 30-Apr-2010  uebayasi Sync with HEAD.
 1.66.12.2 29-Apr-2012  mrg sync to latest -current.
 1.66.12.1 18-Feb-2012  mrg merge to -current.
 1.66.8.2 23-May-2012  yamt sync with head.
 1.66.8.1 17-Apr-2012  yamt sync with head
 1.70.8.1 03-Nov-2014  msaitoh Pull up following revision(s) (requested by riastradh in ticket #1117):
sys/dev/rasops/rasops.c: revision 1.72
sys/dev/vme/if_ie_vme.c: revision 1.31
sys/dev/qbus/if_qe.c: revision 1.73
sys/altq/altq_jobs.c: revision 1.7
sys/net/if_gre.c: revision 1.160
sys/dev/ic/oosiop.c: revision 1.14
- Fix error branches in altq_jobs.c to avoid leaks, noted by maxv@.
- Fix leaks in oosiop_alloc_cb error branches, noted by maxv@.
While here, avoid a sketchy pointer cast that probably falls afoul of
strict aliasing rules. Compile-tested only, with hppa.
- Don't leak f on failurein rasops.c. Noted by maxv@.
Compile-tested only, with zaurus.
- Avoid leak in error branch in if_qe.c, noted by maxv@, compile-tested for
vax.
- Sizeof struct ievme, not sizeof size_t in if_ie_vme.c.
Noted by maxv@, compile-tested for sparc.
- Don't leak in gre_clone_create error branch.
Noted by maxv@, compile-tested for amd64.
 1.70.6.1 03-Nov-2014  msaitoh Pull up following revision(s) (requested by riastradh in ticket #1117):
sys/dev/rasops/rasops.c: revision 1.72
sys/dev/vme/if_ie_vme.c: revision 1.31
sys/dev/qbus/if_qe.c: revision 1.73
sys/altq/altq_jobs.c: revision 1.7
sys/net/if_gre.c: revision 1.160
sys/dev/ic/oosiop.c: revision 1.14
- Fix error branches in altq_jobs.c to avoid leaks, noted by maxv@.
- Fix leaks in oosiop_alloc_cb error branches, noted by maxv@.
While here, avoid a sketchy pointer cast that probably falls afoul of
strict aliasing rules. Compile-tested only, with hppa.
- Don't leak f on failurein rasops.c. Noted by maxv@.
Compile-tested only, with zaurus.
- Avoid leak in error branch in if_qe.c, noted by maxv@, compile-tested for
vax.
- Sizeof struct ievme, not sizeof size_t in if_ie_vme.c.
Noted by maxv@, compile-tested for sparc.
- Don't leak in gre_clone_create error branch.
Noted by maxv@, compile-tested for amd64.
 1.70.2.1 03-Nov-2014  msaitoh Pull up following revision(s) (requested by riastradh in ticket #1117):
sys/dev/rasops/rasops.c: revision 1.72
sys/dev/vme/if_ie_vme.c: revision 1.31
sys/dev/qbus/if_qe.c: revision 1.73
sys/altq/altq_jobs.c: revision 1.7
sys/net/if_gre.c: revision 1.160
sys/dev/ic/oosiop.c: revision 1.14
- Fix error branches in altq_jobs.c to avoid leaks, noted by maxv@.
- Fix leaks in oosiop_alloc_cb error branches, noted by maxv@.
While here, avoid a sketchy pointer cast that probably falls afoul of
strict aliasing rules. Compile-tested only, with hppa.
- Don't leak f on failurein rasops.c. Noted by maxv@.
Compile-tested only, with zaurus.
- Avoid leak in error branch in if_qe.c, noted by maxv@, compile-tested for
vax.
- Sizeof struct ievme, not sizeof size_t in if_ie_vme.c.
Noted by maxv@, compile-tested for sparc.
- Don't leak in gre_clone_create error branch.
Noted by maxv@, compile-tested for amd64.
 1.71.14.1 22-Aug-2014  martin Pull up following revision(s) (requested by riastradh in ticket #44):
sys/altq/altq_jobs.c 1.7
Fix error branches to avoid leaks, noted by maxv@.
sys/dev/ic/oosiop.c 1.14
Fix leaks in oosiop_alloc_cb error branches, noted by maxv@.
While here, avoid a sketchy pointer cast that probably falls afoul
of strict aliasing rules.
sys/dev/qbus/if_qe.c 1.73
Avoid leak in error branch, noted by maxv@, compile-tested for vax.
sys/dev/rasops/rasops.c 1.72
Don't leak f on failure. Noted by maxv@.
sys/dev/vme/if_ie_vme.c 1.31
Sizeof struct ievme, not sizeof size_t.
Noted by maxv@, compile-tested for sparc.
sys/net/if_gre.c 1.160
Don't leak in gre_clone_create error branch.
Noted by maxv@, compile-tested for amd64.
 1.71.2.1 03-Dec-2017  jdolecek update from HEAD
 1.72.2.2 28-Aug-2017  skrll Sync with HEAD
 1.72.2.1 06-Jun-2015  skrll Sync with HEAD
 1.73.4.1 21-Apr-2017  bouyer Sync with HEAD
 1.73.2.2 26-Apr-2017  pgoyette Sync with HEAD
 1.73.2.1 20-Mar-2017  pgoyette Sync with HEAD
 1.75.2.1 19-May-2017  pgoyette Resolve conflicts from previous merge (all resulting from $NetBSD
keywork expansion)
 1.77.10.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.77.10.1 10-Jun-2019  christos Sync with HEAD
 1.77.8.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.101.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.51 25-Jul-2025  martin PR 58582: make rasops and wsdisplay headers idempotent.
 1.50 24-Dec-2021  jmcneill branches: 1.50.10;
wsfb: Prefer wide fonts when EDID data is available.

To give us a better chance of picking a readable font, prefer fonts that
will render at least 3mm wide instead of picking the font that will be
closest to that size.
 1.49 02-Nov-2019  tsutsui Fix "Alignment Fault 3" kernel failure of NetBSD/zaurus 8.1 GENERIC.

#ifdef switch per kernel config options in definition of device driver
structure in header files could be problematic.

See my post in port-zaurus@ for details:
https://mail-index.netbsd.org/port-zaurus/2019/10/31/msg000079.html

Should be pulled up to netbsd-8 and netbsd-9.
 1.48 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.47 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.46 07-Aug-2019  rin Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.

Pointed out by martin.
 1.45 07-Aug-2019  rin Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!
 1.44 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.43 03-Aug-2019  rin Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.
 1.42 31-Jul-2019  rin Provide buffer capable of single-row pixels in order to make things simpler.

XXX
Bump kernel version for rasops_info later.
 1.41 31-Jul-2019  rin G/C ri_delta.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.40 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.39 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.38 29-Jul-2019  rin branches: 1.38.2;
Avoid undefined behavior when converting unaligned be32 data to
host integer, found by kUBSan.

Pointed out by msaitoh.
 1.37 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.36 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.35 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.34 24-Jul-2019  rin Adjust white space.
 1.33 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.32 22-Apr-2017  macallan branches: 1.32.4; 1.32.12;
add RI_PREFER_ALPHA flag, for drivers that can draw such fonts by hardware
 1.31 19-Apr-2012  macallan branches: 1.31.2; 1.31.16; 1.31.20;
add another convenience function:
rasops_get_cmap() which returns either the ANSI map or an R3G3B2 map,
depending on the rasops_info handed to it so drivers don't have to
duplicate this particular code snippet
 1.30 11-Jan-2012  macallan make rasops_init()'s font selection code a bit less boneheaded by:
- actually trying to pick a font which gets as close as possible to the
requested terminal size
- accepting 0,0 as 'use system default' which can be changed by
options RASOPS_DEFAULT_WIDTH=100
options RASOPS_DEFAULT_HEIGHT=30
default is 80x25
- putting alpha and bitmap fonts in the same list and making wsfont_find()
aware of wether we support alpha fonts or not
- if supported, prefer alpha fonts over otherwise equally suitable bitmap
fonts
 1.29 03-Jan-2012  macallan add a macro to identify alpha fonts
 1.28 28-Dec-2011  macallan add a new flag for ri_flg to allow drivers to request an r3g3b2 devcmap
in 8 bit colour. Drivers are still responsible to generate an appropriate
colour map for the actual hardware.
For use with alpha blending which needs some sort of 'true' colour.
 1.27 22-Dec-2011  macallan support anti-aliased fonts ( as in, pre-rendered alpha maps ), for now only
in rasops32 although adding support in 15, 16 and 24 would be trivial.
Enabled only if the driver explicitly requests it by setting the
RI_ENABLE_ALPHA flag.
 1.26 06-May-2010  macallan branches: 1.26.8; 1.26.12;
Introduce a new flag for rasops_info to keep rasops_reconfig() from trying
to allocate memory. Use this when calling rasops_reconfig() before it is safe
to call kmem_alloc().
 1.25 04-May-2010  macallan autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.24 17-Apr-2010  nonaka Added Sharp W-ZERO3 series support.
 1.23 21-Jan-2010  macallan branches: 1.23.2; 1.23.4;
make RI_CENTER and RI_FULLCLEAR work with a shadow framebuffer
 1.22 28-Apr-2008  martin Remove clause 3 and 4 from TNF licenses
 1.21 04-Mar-2007  christos branches: 1.21.36; 1.21.38; 1.21.40;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.20 02-Feb-2007  ober branches: 1.20.2;
Updates to allow Zaurus screen to rotate 90 degrees to a usable state with the keyboard. Patch from peter@ copied from OpenBSD. Feedback and OK from matt@
 1.19 18-Feb-2006  jmcneill branches: 1.19.14;
Add shadow framebuffer support.
 1.18 11-Dec-2005  christos branches: 1.18.2; 1.18.4; 1.18.6;
merge ktrace-lwp.
 1.17 04-Feb-2005  perry branches: 1.17.6;
de-__P
 1.16 05-Mar-2004  petrov branches: 1.16.8; 1.16.10;
Check character if it in font limits before drawing it in rasops8_putchar
functions.
 1.15 18-Sep-2001  wiz branches: 1.15.18;
Give initiali[sz]e all the "i"s it deserves.
 1.14 21-Jan-2001  takemura branches: 1.14.2; 1.14.4; 1.14.6;
Rasops supports 4bit depth.
 1.13 13-Jun-2000  ad Use my proper name.
 1.12 12-Apr-2000  pk branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.11 14-Dec-1999  ad Note that per-depth initialization functions shouldn't be called by mere
mortals.
 1.10 14-Dec-1999  ad The ri_hw member was added to 'struct rasops_info'. This does the same thing
as ri_priv; since ri_priv is not used anywhere in the kernel, nuke it.
 1.9 02-Dec-1999  drochner -initialize the colormap completely at compile time, to allow drivers
to use it early
-now we can declare it "const" (as "rasops_isgray[]", while we are here)
-don't use the fg/bg colors in ...alloc_attr() if the WSATTR_WSCOLORS
flag was not given - use reasonable defaults instead
-add an opaque "ri_hw" member to "rasops_info", for driver use
 1.8 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.7 24-Aug-1999  ad branches: 1.7.2; 1.7.4; 1.7.6;
- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes
 1.6 18-May-1999  ad branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.5 29-Apr-1999  ad Add cookie for wsfont to rasops_info.
 1.4 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.3 13-Apr-1999  ad Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.6.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.7.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.7.4.1 15-Nov-1999  fvdl Sync with -current
 1.7.2.2 11-Feb-2001  bouyer Sync with HEAD.
 1.7.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.12.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.14.6.1 01-Oct-2001  fvdl Catch up with -current.
 1.14.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.14.2.1 21-Sep-2001  nathanw Catch up to -current.
 1.15.18.4 04-Feb-2005  skrll Sync with HEAD.
 1.15.18.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.15.18.2 18-Sep-2004  skrll Sync with HEAD.
 1.15.18.1 03-Aug-2004  skrll Sync with HEAD
 1.16.10.1 12-Feb-2005  yamt sync with head.
 1.16.8.1 29-Apr-2005  kent sync with -current
 1.17.6.3 03-Sep-2007  yamt sync with head.
 1.17.6.2 26-Feb-2007  yamt sync with head.
 1.17.6.1 21-Jun-2006  yamt sync with head.
 1.18.6.1 22-Apr-2006  simonb Sync with head.
 1.18.4.1 09-Sep-2006  rpaulo sync with head
 1.18.2.1 18-Feb-2006  yamt sync with head.
 1.19.14.1 09-Feb-2007  ad Sync with HEAD.
 1.20.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.21.40.3 11-Aug-2010  yamt sync with head.
 1.21.40.2 11-Mar-2010  yamt sync with head
 1.21.40.1 16-May-2008  yamt sync with head.
 1.21.38.1 18-May-2008  yamt sync with head.
 1.21.36.1 02-Jun-2008  mjf Sync with HEAD.
 1.23.4.1 30-May-2010  rmind sync with head
 1.23.2.2 17-Aug-2010  uebayasi Sync with HEAD.
 1.23.2.1 30-Apr-2010  uebayasi Sync with HEAD.
 1.26.12.2 29-Apr-2012  mrg sync to latest -current.
 1.26.12.1 18-Feb-2012  mrg merge to -current.
 1.26.8.2 23-May-2012  yamt sync with head.
 1.26.8.1 17-Apr-2012  yamt sync with head
 1.31.20.1 26-Apr-2017  pgoyette Sync with HEAD
 1.31.16.1 28-Aug-2017  skrll Sync with HEAD
 1.31.2.1 03-Dec-2017  jdolecek update from HEAD
 1.32.12.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.32.4.1 04-Nov-2019  martin Pull up following revision(s) (requested by tsutsui in ticket #1422):

sys/dev/rasops/rasops.h: revision 1.49

Fix "Alignment Fault 3" kernel failure of NetBSD/zaurus 8.1 GENERIC.
structure in header files could be problematic.

See my post in port-zaurus@ for details:
https://mail-index.netbsd.org/port-zaurus/2019/10/31/msg000079.html

Should be pulled up to netbsd-8 and netbsd-9.
 1.38.2.2 04-Nov-2019  martin Pull up following revision(s) (requested by tsutsui in ticket #394):

sys/dev/rasops/rasops.h: revision 1.49

Fix "Alignment Fault 3" kernel failure of NetBSD/zaurus 8.1 GENERIC.
structure in header files could be problematic.

See my post in port-zaurus@ for details:
https://mail-index.netbsd.org/port-zaurus/2019/10/31/msg000079.html

Should be pulled up to netbsd-8 and netbsd-9.
 1.38.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.50.10.1 02-Aug-2025  perseant Sync with HEAD
 1.3 10-Aug-2019  rin branches: 1.3.2; 1.3.10;
Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.2 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.1 07-Aug-2019  rin Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.
 1.3.10.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.3.10.1 10-Aug-2019  martin file rasops1-4_putchar.h was added on branch phil-wifi on 2020-04-13 08:04:47 +0000
 1.3.2.2 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.3.2.1 10-Aug-2019  martin file rasops1-4_putchar.h was added on branch netbsd-9 on 2019-08-15 12:21:27 +0000
 1.37 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.36 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.35 07-Aug-2019  rin Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.

Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.

Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.

Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.
 1.34 02-Aug-2019  rin Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.
 1.33 02-Aug-2019  rin Support font width 32 on monochrome screen.
 1.32 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.31 30-Jul-2019  rin branches: 1.31.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.30 29-Jul-2019  rin Avoid undefined behavior when converting unaligned be32 data to
host integer, found by kUBSan.

Pointed out by msaitoh.
 1.29 29-Jul-2019  rin Clean up for rasops1.c:
- dedup ugly copy-paste
- rewrite to factorize width-optimized putchar functions
- misc style
 1.28 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.27 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.26 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.25 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.24 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.23 04-May-2010  macallan branches: 1.23.58; 1.23.60;
autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.22 13-Apr-2010  macallan fix a bunch of typos, now 8 bit fonts work properly
 1.21 08-Apr-2010  macallan add support for shadow framebuffers
tested on sparc with a cg12
 1.20 14-Mar-2009  dsl branches: 1.20.2; 1.20.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.19 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.18 28-Apr-2008  martin branches: 1.18.8; 1.18.14;
Remove clause 3 and 4 from TNF licenses
 1.17 11-Dec-2005  christos branches: 1.17.70; 1.17.72; 1.17.74;
merge ktrace-lwp.
 1.16 04-Feb-2005  perry de-__P
 1.15 15-Nov-2001  lukem branches: 1.15.16; 1.15.24; 1.15.26;
don't need <sys/types.h> when including <sys/param.h>
 1.14 13-Nov-2001  lukem add/cleanup RCSIDs
 1.13 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.12 13-Jun-2000  ad branches: 1.12.4; 1.12.6; 1.12.8;
Use my proper name.
 1.11 12-Apr-2000  pk branches: 1.11.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.10 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.9 31-Aug-1999  ad branches: 1.9.2; 1.9.4; 1.9.6;
Pass color value through ri->ri_devcmap before writing.
 1.8 20-Aug-1999  mouse Get rid of ugly vertical bars which occurred when
character-cell boundaries != byte boundaries.
("width" (despite the poor name) should be computed based on the
*old* value of bg, not the *new* one.)
Fixes PR 8221.
 1.7 25-Jul-1999  ad Use unsigned integer to hold font bits in putchar(). [This looks like the
source of glyph corruption].
 1.6 21-Jul-1999  ad - Style nits
- Kill some of the dainbramage in variable-depth copycols()
 1.5 18-May-1999  ad branches: 1.5.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.4 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.3 13-Apr-1999  ad Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.5.2.2 02-Aug-1999  thorpej Update from trunk.
 1.5.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.9.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.9.4.1 15-Nov-1999  fvdl Sync with -current
 1.9.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.11.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.12.8.1 01-Oct-2001  fvdl Catch up with -current.
 1.12.6.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.12.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.12.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.12.4.1 21-Sep-2001  nathanw Catch up to -current.
 1.15.26.1 12-Feb-2005  yamt sync with head.
 1.15.24.1 29-Apr-2005  kent sync with -current
 1.15.16.1 04-Feb-2005  skrll Sync with HEAD.
 1.17.74.3 11-Aug-2010  yamt sync with head.
 1.17.74.2 04-May-2009  yamt sync with head.
 1.17.74.1 16-May-2008  yamt sync with head.
 1.17.72.1 18-May-2008  yamt sync with head.
 1.17.70.1 02-Jun-2008  mjf Sync with HEAD.
 1.18.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.18.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.20.4.1 30-May-2010  rmind sync with head
 1.20.2.2 17-Aug-2010  uebayasi Sync with HEAD.
 1.20.2.1 30-Apr-2010  uebayasi Sync with HEAD.
 1.23.60.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.23.60.1 10-Jun-2019  christos Sync with HEAD
 1.23.58.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.31.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.39 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.38 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.37 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.36 07-Aug-2019  rin Oops, revert an unintentional change for now.
 1.35 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.34 02-Aug-2019  rin Cosmetic changes. No functional changes.
 1.33 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.32 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.31 29-Jul-2019  rin branches: 1.31.2;
Factor out putchar_aa functions into rasops_putchar_aa.h, which includes
the following fixes:

- stop using memset to framebuffer for depth 8
- correctly support non-standard positions/lengths of RGB bits in pixel
 1.30 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.29 28-Jul-2019  rin Fix underline for anti-aliased fonts on 15/16 depth screen.
 1.28 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.27 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.26 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.25 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.24 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.23 21-Jul-2019  rin Fix byte order of stamp for big endian so that width-optimized
putchar functions work correctly.
 1.22 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.21 25-Jan-2017  jakllsch branches: 1.21.12; 1.21.14;
Add rasops15_putchar_aa() for greyscale fonts.

Based on rasops8_putchar_aa() and rasops32_putchar_aa().
 1.20 17-Apr-2012  macallan branches: 1.20.2; 1.20.16; 1.20.20; 1.20.24;
fix what has to be a thinko - I doubt there's much hardware out there that
uses BGR in 15/16 bit colour
 1.19 04-May-2010  macallan branches: 1.19.8; 1.19.12;
autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.18 14-Mar-2009  dsl branches: 1.18.2; 1.18.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.17 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.16 28-Apr-2008  martin branches: 1.16.8; 1.16.14;
Remove clause 3 and 4 from TNF licenses
 1.15 04-Mar-2007  christos branches: 1.15.36; 1.15.38; 1.15.40;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.14 18-Feb-2006  jmcneill branches: 1.14.20;
Add shadow framebuffer support.
 1.13 11-Dec-2005  christos branches: 1.13.2; 1.13.4; 1.13.6;
merge ktrace-lwp.
 1.12 04-Feb-2005  perry branches: 1.12.6;
de-__P
 1.11 15-Nov-2001  lukem branches: 1.11.16; 1.11.24; 1.11.26;
don't need <sys/types.h> when including <sys/param.h>
 1.10 13-Nov-2001  lukem add/cleanup RCSIDs
 1.9 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.8 13-Jun-2000  ad branches: 1.8.4; 1.8.6; 1.8.8;
Use my proper name.
 1.7 12-Apr-2000  pk branches: 1.7.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.6 12-Feb-2000  ad Fix the unaligned accesses discovered by dbj.
 1.5 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.4 18-May-1999  ad branches: 1.4.2; 1.4.4; 1.4.6; 1.4.8;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.3 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.4.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.4.6.1 15-Nov-1999  fvdl Sync with -current
 1.4.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.4.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.7.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.8.8.1 01-Oct-2001  fvdl Catch up with -current.
 1.8.6.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.8.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.8.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.8.4.1 21-Sep-2001  nathanw Catch up to -current.
 1.11.26.1 12-Feb-2005  yamt sync with head.
 1.11.24.1 29-Apr-2005  kent sync with -current
 1.11.16.1 04-Feb-2005  skrll Sync with HEAD.
 1.12.6.2 03-Sep-2007  yamt sync with head.
 1.12.6.1 21-Jun-2006  yamt sync with head.
 1.13.6.1 22-Apr-2006  simonb Sync with head.
 1.13.4.1 09-Sep-2006  rpaulo sync with head
 1.13.2.1 18-Feb-2006  yamt sync with head.
 1.14.20.1 12-Mar-2007  rmind Sync with HEAD.
 1.15.40.3 11-Aug-2010  yamt sync with head.
 1.15.40.2 04-May-2009  yamt sync with head.
 1.15.40.1 16-May-2008  yamt sync with head.
 1.15.38.1 18-May-2008  yamt sync with head.
 1.15.36.1 02-Jun-2008  mjf Sync with HEAD.
 1.16.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.16.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.18.4.1 30-May-2010  rmind sync with head
 1.18.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.19.12.1 29-Apr-2012  mrg sync to latest -current.
 1.19.8.1 23-May-2012  yamt sync with head.
 1.20.24.1 21-Apr-2017  bouyer Sync with HEAD
 1.20.20.1 20-Mar-2017  pgoyette Sync with HEAD
 1.20.16.1 05-Feb-2017  skrll Sync with HEAD
 1.20.2.1 03-Dec-2017  jdolecek update from HEAD
 1.21.14.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.21.14.1 10-Jun-2019  christos Sync with HEAD
 1.21.12.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.31.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.6 10-Aug-2019  rin branches: 1.6.8;
Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.5 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.4 07-Aug-2019  rin Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.

Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.

Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.

Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.
 1.3 07-Aug-2019  rin Use "hp" instead of "hrp" consistently with other files.
No functional changes.
 1.2 29-Jul-2019  rin branches: 1.2.2;
Try to fix problem reported by ryoon:
http://mail-index.netbsd.org/source-changes-d/2019/07/29/msg011516.html

There are apparent bugs for shadow framebuffer. Sorry for the breakage.
 1.1 29-Jul-2019  rin Clean up for rasops1.c:
- dedup ugly copy-paste
- rewrite to factorize width-optimized putchar functions
- misc style
 1.2.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.6.8.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.6.8.1 10-Aug-2019  martin file rasops1_putchar_width.h was added on branch phil-wifi on 2020-04-13 08:04:47 +0000
 1.34 29-May-2022  andvar s/littel/little/ mainly in copy pasted comments.
 1.33 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.32 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.31 07-Aug-2019  rin Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.
 1.30 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.29 02-Aug-2019  rin Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.
 1.28 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.27 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.26 29-Jul-2019  rin branches: 1.26.2;
Convert rasops2.c and rasops4.c to use rasops_putchar_width.h.
Style.
 1.25 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.24 28-Jul-2019  rin Fix corruption of background-colored white space and underline when
font width is 8 or 16 on 2bpp screen.
 1.23 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.22 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.21 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.20 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.19 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.18 21-Apr-2013  kiyohara branches: 1.18.34; 1.18.36;
Support little endian makestamp.
 1.17 04-May-2010  macallan branches: 1.17.8; 1.17.18;
remove now redundant ri = ... lines in putchar() methods
Looks like none of my usual test builds used rasops2.c
 1.16 04-May-2010  nonaka fix compile failure.
 1.15 04-May-2010  macallan autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.14 14-Mar-2009  dsl branches: 1.14.2; 1.14.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.13 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.12 28-Apr-2008  martin branches: 1.12.8; 1.12.14;
Remove clause 3 and 4 from TNF licenses
 1.11 11-Dec-2005  christos branches: 1.11.70; 1.11.72; 1.11.74;
merge ktrace-lwp.
 1.10 04-Feb-2005  perry de-__P
 1.9 15-Nov-2001  lukem branches: 1.9.16; 1.9.24; 1.9.26;
don't need <sys/types.h> when including <sys/param.h>
 1.8 13-Nov-2001  lukem add/cleanup RCSIDs
 1.7 10-Aug-2001  bjh21 Adjust #ifdefs so RASOPS_SMALL doesn't give "defined but not used" warnings.
 1.6 13-Jun-2000  ad branches: 1.6.4; 1.6.6;
Use my proper name.
 1.5 12-Apr-2000  pk branches: 1.5.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.4 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.3 21-Jul-1999  ad branches: 1.3.2; 1.3.4; 1.3.6;
- Style nits
- Kill some of the dainbramage in variable-depth copycols()
 1.2 18-May-1999  ad branches: 1.2.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.1 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2.2.2 02-Aug-1999  thorpej Update from trunk.
 1.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.3.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.3.4.1 15-Nov-1999  fvdl Sync with -current
 1.3.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.5.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.6.6.2 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.6.6.1 25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.6.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.6.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.6.4.1 24-Aug-2001  nathanw Catch up with -current.
 1.9.26.1 12-Feb-2005  yamt sync with head.
 1.9.24.1 29-Apr-2005  kent sync with -current
 1.9.16.1 04-Feb-2005  skrll Sync with HEAD.
 1.11.74.3 11-Aug-2010  yamt sync with head.
 1.11.74.2 04-May-2009  yamt sync with head.
 1.11.74.1 16-May-2008  yamt sync with head.
 1.11.72.1 18-May-2008  yamt sync with head.
 1.11.70.1 02-Jun-2008  mjf Sync with HEAD.
 1.12.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.12.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.14.4.1 30-May-2010  rmind sync with head
 1.14.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.17.18.1 23-Jun-2013  tls resync from head
 1.17.8.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.18.36.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.18.36.1 10-Jun-2019  christos Sync with HEAD
 1.18.34.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.26.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.50 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.49 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.48 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.47 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.46 02-Aug-2019  rin Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).
 1.45 02-Aug-2019  rin Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42
 1.44 02-Aug-2019  rin Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.
 1.43 31-Jul-2019  rin Factor out copy-paste. No functional changes.
 1.42 31-Jul-2019  rin Provide buffer capable of single-row pixels in order to make things simpler.

XXX
Bump kernel version for rasops_info later.
 1.41 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.40 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.39 30-Jul-2019  rin branches: 1.39.2;
Support shadow framebuffer for 24bpp screen.
 1.38 29-Jul-2019  rin Hmmm, color was still strange for 24bpp on little endian machine,
only when font width is 12.

We need to use different devcmap for that case, if we wish to share
codes for other depths/font widths as possible as we can.

XXX
What should we do for big endian? I have no big endian machines with
24bpp framebuffer...
 1.37 29-Jul-2019  rin Support anti-aliasing for depth 24.
 1.36 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.35 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.34 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.33 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.32 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.31 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.30 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.29 25-Jul-2011  njoly branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build
 1.28 04-May-2010  macallan autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.27 14-Mar-2009  dsl branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.26 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.25 28-Apr-2008  martin branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses
 1.24 04-Mar-2007  christos branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.
 1.23 04-Mar-2007  christos Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.22 29-Jan-2006  dsl branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h
 1.21 11-Dec-2005  christos branches: 1.21.2;
merge ktrace-lwp.
 1.20 30-May-2005  christos branches: 1.20.2;
avoid shadow variable "stamp"
 1.19 27-Feb-2005  perry nuke trailing whitespace
 1.18 04-Feb-2005  perry de-__P
 1.17 05-Sep-2002  petrov branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.
 1.16 15-Nov-2001  lukem don't need <sys/types.h> when including <sys/param.h>
 1.15 13-Nov-2001  lukem add/cleanup RCSIDs
 1.14 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.13 13-Jun-2000  ad branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.
 1.12 12-Apr-2000  pk branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.11 12-Feb-2000  ad Misplaced #endif.
 1.10 12-Feb-2000  ad Fix the unaligned accesses discovered by dbj.
 1.9 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.8 25-Aug-1999  ad branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.
 1.7 24-Aug-1999  ad - Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes
 1.6 18-May-1999  ad branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.5 26-Apr-1999  ad Remove crud remaining from userland mockup.
 1.4 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.3 13-Apr-1999  ad Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.6.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.8.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.8.4.1 15-Nov-1999  fvdl Sync with -current
 1.8.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.12.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.13.8.1 01-Oct-2001  fvdl Catch up with -current.
 1.13.6.2 10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.13.6.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.13.4.4 17-Sep-2002  nathanw Catch up to -current.
 1.13.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.13.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.13.4.1 21-Sep-2001  nathanw Catch up to -current.
 1.17.16.2 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.17.16.1 12-Feb-2005  yamt sync with head.
 1.17.14.1 29-Apr-2005  kent sync with -current
 1.17.6.3 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.17.6.2 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.17.6.1 04-Feb-2005  skrll Sync with HEAD.
 1.20.2.2 03-Sep-2007  yamt sync with head.
 1.20.2.1 21-Jun-2006  yamt sync with head.
 1.21.2.1 01-Feb-2006  yamt sync with head.
 1.22.24.1 12-Mar-2007  rmind Sync with HEAD.
 1.24.40.3 11-Aug-2010  yamt sync with head.
 1.24.40.2 04-May-2009  yamt sync with head.
 1.24.40.1 16-May-2008  yamt sync with head.
 1.24.38.1 18-May-2008  yamt sync with head.
 1.24.36.1 02-Jun-2008  mjf Sync with HEAD.
 1.25.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.25.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.27.4.1 30-May-2010  rmind sync with head
 1.27.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.29.54.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.29.54.1 10-Jun-2019  christos Sync with HEAD
 1.29.52.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.39.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.46 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.45 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.44 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.43 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.42 02-Aug-2019  rin Cosmetic changes. No functional changes.
 1.41 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.40 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.39 29-Jul-2019  rin branches: 1.39.2;
Factor out putchar_aa functions into rasops_putchar_aa.h, which includes
the following fixes:

- stop using memset to framebuffer for depth 8
- correctly support non-standard positions/lengths of RGB bits in pixel
 1.38 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.37 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.36 25-Jul-2019  rin Add width-optimized putchar functions for 32-bpp, that work fine on
both little- and big-endian machines.

WIP genfb(4) driver for mac68k becomes 1.5 times faster!
 1.35 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.34 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.33 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.32 01-Mar-2019  jakllsch Fix whitespace. (In the source code, not in the functionality.)
 1.31 01-Mar-2019  jakllsch Underline when the attribute say underline, not when it says to reverse.
 1.30 01-Mar-2019  jakllsch Reset 'height' before underlining in rasops32_putchar_aa().

Prevents segfault when underlining whitespace in the upper left cell.
 1.29 15-Sep-2013  martin branches: 1.29.30;
Remove unused variable
 1.28 31-Jul-2013  macallan rasops32_putchar_aa():
- underline the right characters
- make drawing slightly less horribly inefficient
- don't pretend to support a shadow fb
 1.27 21-Mar-2013  martin branches: 1.27.6;
Ooops, backout local change not intended to be commited with the last change
 1.26 21-Mar-2013  martin Add syntatic sugar to avoid hurting my eyes
 1.25 23-Oct-2012  macallan make anti-aliased character drawing work on hardware where stride != width * bytes per pixel
 1.24 04-Jan-2012  macallan branches: 1.24.6;
use CHAR_IN_FONT() and WSFONT_GLYPH() macros
 1.23 03-Jan-2012  macallan split putchar method into one for alpha fonts and one for bitmap fonts
 1.22 27-Dec-2011  macallan skip the multiplications for alpha values of 0 and 255, just use background
and foreground colours there
 1.21 24-Dec-2011  macallan rename alpha variable to avoid conflict with a platform macro on alpha
 1.20 22-Dec-2011  macallan support anti-aliased fonts ( as in, pre-rendered alpha maps ), for now only
in rasops32 although adding support in 15, 16 and 24 would be trivial.
Enabled only if the driver explicitly requests it by setting the
RI_ENABLE_ALPHA flag.
 1.19 04-May-2010  macallan branches: 1.19.8; 1.19.12;
autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.18 14-Mar-2009  dsl branches: 1.18.2; 1.18.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.17 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.16 28-Apr-2008  martin branches: 1.16.8; 1.16.14;
Remove clause 3 and 4 from TNF licenses
 1.15 18-Feb-2006  jmcneill branches: 1.15.64; 1.15.66; 1.15.68;
Add shadow framebuffer support.
 1.14 11-Dec-2005  christos branches: 1.14.2; 1.14.4; 1.14.6;
merge ktrace-lwp.
 1.13 04-Feb-2005  perry branches: 1.13.6;
de-__P
 1.12 16-Apr-2003  petrov branches: 1.12.2; 1.12.10; 1.12.12;
rasops32_putchar: don't paint character out of font limits.
 1.11 15-Nov-2001  lukem don't need <sys/types.h> when including <sys/param.h>
 1.10 13-Nov-2001  lukem add/cleanup RCSIDs
 1.9 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.8 13-Jun-2000  ad branches: 1.8.4; 1.8.6; 1.8.8;
Use my proper name.
 1.7 12-Apr-2000  pk branches: 1.7.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.6 24-Oct-1999  ad Wrap a line properly.
 1.5 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.4 18-May-1999  ad branches: 1.4.2; 1.4.4; 1.4.6; 1.4.8;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.3 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.4.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.4.6.1 15-Nov-1999  fvdl Sync with -current
 1.4.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.4.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.7.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.8.8.1 01-Oct-2001  fvdl Catch up with -current.
 1.8.6.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.8.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.8.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.8.4.1 21-Sep-2001  nathanw Catch up to -current.
 1.12.12.1 12-Feb-2005  yamt sync with head.
 1.12.10.1 29-Apr-2005  kent sync with -current
 1.12.2.1 04-Feb-2005  skrll Sync with HEAD.
 1.13.6.1 21-Jun-2006  yamt sync with head.
 1.14.6.1 22-Apr-2006  simonb Sync with head.
 1.14.4.1 09-Sep-2006  rpaulo sync with head
 1.14.2.1 18-Feb-2006  yamt sync with head.
 1.15.68.3 11-Aug-2010  yamt sync with head.
 1.15.68.2 04-May-2009  yamt sync with head.
 1.15.68.1 16-May-2008  yamt sync with head.
 1.15.66.1 18-May-2008  yamt sync with head.
 1.15.64.1 02-Jun-2008  mjf Sync with HEAD.
 1.16.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.16.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.18.4.1 30-May-2010  rmind sync with head
 1.18.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.19.12.1 18-Feb-2012  mrg merge to -current.
 1.19.8.3 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.19.8.2 30-Oct-2012  yamt sync with head
 1.19.8.1 17-Apr-2012  yamt sync with head
 1.24.6.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.24.6.1 20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.27.6.2 18-May-2014  rmind sync with head
 1.27.6.1 28-Aug-2013  rmind sync with head
 1.29.30.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.29.30.1 10-Jun-2019  christos Sync with HEAD
 1.39.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.28 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.27 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.26 07-Aug-2019  rin Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.
 1.25 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.24 02-Aug-2019  rin Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.
 1.23 01-Aug-2019  rin 4 is 1 << 2, not 1 << 3...
 1.22 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.21 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.20 29-Jul-2019  rin branches: 1.20.2;
Convert rasops2.c and rasops4.c to use rasops_putchar_width.h.
Style.
 1.19 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.18 26-Jul-2019  rin Fix 4-bpp stamp for big endian.
 1.17 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.16 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.15 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.14 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.13 05-Dec-2018  mlelstv It's WSATTR_UNDERLINE, not WS_UNDERLINE.
 1.12 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.11 21-Apr-2013  kiyohara branches: 1.11.34; 1.11.36;
Support little endian makestamp.
 1.10 04-May-2010  macallan branches: 1.10.8; 1.10.18;
autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.9 14-Mar-2009  dsl branches: 1.9.2; 1.9.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.8 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.7 28-Apr-2008  martin branches: 1.7.8; 1.7.14;
Remove clause 3 and 4 from TNF licenses
 1.6 11-Dec-2005  christos branches: 1.6.70; 1.6.72; 1.6.74;
merge ktrace-lwp.
 1.5 04-Feb-2005  perry de-__P
 1.4 15-Nov-2001  lukem branches: 1.4.16; 1.4.24; 1.4.26;
don't need <sys/types.h> when including <sys/param.h>
 1.3 13-Nov-2001  lukem add/cleanup RCSIDs
 1.2 10-Aug-2001  bjh21 Adjust #ifdefs so RASOPS_SMALL doesn't give "defined but not used" warnings.
 1.1 21-Jan-2001  takemura branches: 1.1.2; 1.1.4; 1.1.6;
Rasops supports 4bit depth.
 1.1.6.2 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.1.6.1 25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.1.4.3 08-Jan-2002  nathanw Catch up to -current.
 1.1.4.2 14-Nov-2001  nathanw Catch up to -current.
 1.1.4.1 24-Aug-2001  nathanw Catch up with -current.
 1.1.2.2 11-Feb-2001  bouyer Sync with HEAD.
 1.1.2.1 21-Jan-2001  bouyer file rasops4.c was added on branch thorpej_scsipi on 2001-02-11 19:16:18 +0000
 1.4.26.1 12-Feb-2005  yamt sync with head.
 1.4.24.1 29-Apr-2005  kent sync with -current
 1.4.16.1 04-Feb-2005  skrll Sync with HEAD.
 1.6.74.3 11-Aug-2010  yamt sync with head.
 1.6.74.2 04-May-2009  yamt sync with head.
 1.6.74.1 16-May-2008  yamt sync with head.
 1.6.72.1 18-May-2008  yamt sync with head.
 1.6.70.1 02-Jun-2008  mjf Sync with HEAD.
 1.7.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.7.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.9.4.1 30-May-2010  rmind sync with head
 1.9.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.10.18.1 23-Jun-2013  tls resync from head
 1.10.8.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.11.36.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.11.36.1 10-Jun-2019  christos Sync with HEAD
 1.11.34.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.20.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.51 14-Aug-2019  rin When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.50 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.49 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.48 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.47 02-Aug-2019  rin Cosmetic changes. No functional changes.
 1.46 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.45 31-Jul-2019  rin Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
 1.44 29-Jul-2019  rin branches: 1.44.2;
Factor out putchar_aa functions into rasops_putchar_aa.h, which includes
the following fixes:

- stop using memset to framebuffer for depth 8
- correctly support non-standard positions/lengths of RGB bits in pixel
 1.43 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.42 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.41 25-Jul-2019  rin Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.
 1.40 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.39 25-Jul-2019  rin Cosmetic changes. No functional changes.
 1.38 25-Jul-2019  rin Fix screen corruption with 16-width font on 8-bpp display.
 1.37 24-Jul-2019  rin Use unsigned integers for binary data storage.
No functional changes intended.
 1.36 24-Jul-2019  rin Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.
 1.35 04-Dec-2018  mlelstv rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.
 1.34 15-Sep-2013  martin branches: 1.34.28; 1.34.30;
Remove unused variables
 1.33 21-Mar-2013  martin branches: 1.33.6;
Add syntatic sugar to avoid hurting my eyes
 1.32 25-Jan-2012  macallan branches: 1.32.6;
use memset() to clear character cells instead of being terribly slow
 1.31 25-Jan-2012  macallan rasops8_putchar_aa():
render glyphs scanline by scanline into a 64bit-aligned buffer, then memcpy()
it into video memory instead of writing directly.
This gives >10% speedup even on valkyriefb, likely more on PCIe framebuffers.
 1.30 04-Jan-2012  macallan add support for anti-aliased fonts in r3g3b2
 1.29 04-Jan-2012  macallan use CHAR_IN_FONT() and WSFONT_GLYPH() macros
 1.28 28-Dec-2011  macallan add a new flag for ri_flg to allow drivers to request an r3g3b2 devcmap
in 8 bit colour. Drivers are still responsible to generate an appropriate
colour map for the actual hardware.
For use with alpha blending which needs some sort of 'true' colour.
 1.27 04-May-2010  macallan branches: 1.27.8; 1.27.12;
autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation
 1.26 14-Mar-2009  dsl branches: 1.26.2; 1.26.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.25 14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.24 28-Apr-2008  martin branches: 1.24.8; 1.24.14;
Remove clause 3 and 4 from TNF licenses
 1.23 09-Dec-2007  jmcneill branches: 1.23.10; 1.23.12; 1.23.14;
Merge jmcneill-pm branch.
 1.22 04-Mar-2007  christos branches: 1.22.14; 1.22.16; 1.22.24; 1.22.26;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.21 18-Feb-2006  jmcneill branches: 1.21.20;
Add shadow framebuffer support.
 1.20 11-Dec-2005  christos branches: 1.20.2; 1.20.4; 1.20.6;
merge ktrace-lwp.
 1.19 03-Sep-2005  uwe We don't need <sys/bswap.h> here.
 1.18 04-Feb-2005  perry branches: 1.18.6;
de-__P
 1.17 05-Mar-2004  petrov branches: 1.17.8; 1.17.10;
Check character if it in font limits before drawing it in rasops8_putchar
functions.
 1.16 11-Feb-2002  uwe branches: 1.16.16;
Undo previous that incorrectly byte-swaps stamps for little endian
machines when RI_BSWAP is *not* set. Redo my original fix to directly
build stamps in desired endianness instead of calling bswap32().
 1.15 08-Feb-2002  uch | Module Name: syssrc
| Committed By: uwe
| Date: Thu Jan 31 11:18:08 UTC 2002
|
| Modified Files:
| syssrc/sys/dev/rasops: rasops8.c
|
| Log Message:
| Honor RI_BSWAP.

Endian fix.
 1.14 31-Jan-2002  uwe Honor RI_BSWAP.
 1.13 15-Nov-2001  lukem don't need <sys/types.h> when including <sys/param.h>
 1.12 13-Nov-2001  lukem add/cleanup RCSIDs
 1.11 18-Sep-2001  wiz Give initiali[sz]e all the "i"s it deserves.
 1.10 10-Aug-2001  bjh21 branches: 1.10.2;
Adjust #ifdefs so RASOPS_SMALL doesn't give "defined but not used" warnings.
 1.9 13-Jun-2000  ad branches: 1.9.4; 1.9.6;
Use my proper name.
 1.8 12-Apr-2000  pk branches: 1.8.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.7 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.6 19-Aug-1999  ad branches: 1.6.2; 1.6.4; 1.6.6;
Make this compile. Patch from Simon Burge.
 1.5 13-Aug-1999  ad Pass color index through ri_devcmap; don't assume that it already
matches the device's color map.
 1.4 18-May-1999  ad branches: 1.4.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.3 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2 13-Apr-1999  ad Fixed licensing due to a foobar on my behalf.
 1.1 13-Apr-1999  ad Initial import of 'rasops', the new raster operations set for wscons/rcons.
 1.4.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.6.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.6.4.1 15-Nov-1999  fvdl Sync with -current
 1.6.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.8.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.9.6.4 16-Mar-2002  jdolecek Catch up with -current.
 1.9.6.3 11-Feb-2002  jdolecek Sync w/ -current.
 1.9.6.2 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.9.6.1 25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.9.4.5 28-Feb-2002  nathanw Catch up to -current.
 1.9.4.4 08-Jan-2002  nathanw Catch up to -current.
 1.9.4.3 14-Nov-2001  nathanw Catch up to -current.
 1.9.4.2 21-Sep-2001  nathanw Catch up to -current.
 1.9.4.1 24-Aug-2001  nathanw Catch up with -current.
 1.10.2.1 01-Oct-2001  fvdl Catch up with -current.
 1.16.16.5 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.16.16.4 04-Feb-2005  skrll Sync with HEAD.
 1.16.16.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.16.16.2 18-Sep-2004  skrll Sync with HEAD.
 1.16.16.1 03-Aug-2004  skrll Sync with HEAD
 1.17.10.1 12-Feb-2005  yamt sync with head.
 1.17.8.1 29-Apr-2005  kent sync with -current
 1.18.6.3 21-Jan-2008  yamt sync with head
 1.18.6.2 03-Sep-2007  yamt sync with head.
 1.18.6.1 21-Jun-2006  yamt sync with head.
 1.20.6.1 22-Apr-2006  simonb Sync with head.
 1.20.4.1 09-Sep-2006  rpaulo sync with head
 1.20.2.1 18-Feb-2006  yamt sync with head.
 1.21.20.1 12-Mar-2007  rmind Sync with HEAD.
 1.22.26.1 11-Dec-2007  yamt sync with head.
 1.22.24.1 26-Dec-2007  ad Sync with head.
 1.22.16.1 09-Jan-2008  matt sync with HEAD
 1.22.14.1 03-Aug-2007  jmcneill Pull in power management changes from private branch.
 1.23.14.3 11-Aug-2010  yamt sync with head.
 1.23.14.2 04-May-2009  yamt sync with head.
 1.23.14.1 16-May-2008  yamt sync with head.
 1.23.12.1 18-May-2008  yamt sync with head.
 1.23.10.1 02-Jun-2008  mjf Sync with HEAD.
 1.24.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.24.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.26.4.1 30-May-2010  rmind sync with head
 1.26.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.27.12.1 18-Feb-2012  mrg merge to -current.
 1.27.8.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.27.8.1 17-Apr-2012  yamt sync with head
 1.32.6.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.32.6.1 23-Jun-2013  tls resync from head
 1.33.6.1 18-May-2014  rmind sync with head
 1.34.30.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.34.30.1 10-Jun-2019  christos Sync with HEAD
 1.34.28.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.44.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.25 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.24 07-Aug-2019  rin Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.
 1.23 02-Aug-2019  rin Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.
 1.22 02-Aug-2019  rin Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18
 1.21 02-Aug-2019  rin Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.
 1.20 02-Aug-2019  rin Remove duplicate substitution. Style. No functional changes.
 1.19 01-Aug-2019  rin Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.
 1.18 30-Jul-2019  rin branches: 1.18.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.17 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.16 25-Jul-2019  rin Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.
 1.15 02-Dec-2013  tsutsui branches: 1.15.30;
Fix 1 bpp rasops copycols() op:

- fix inverted shift direction in MBL() and MBR() macro in BE case
(used by GETBITS() and PUTBITS() in copycols() function in rasops_bitops.h)
- make all bitmask values unsigned and use proper uint32_t types for
bitmap variables (to avoid arithmetic right shift)
- fix various botches in right-to-left copy op (logic is taken from hp300)

Tested on bwtwo(4) on NetBSD/sparc.
 1.14 21-May-2013  tsutsui branches: 1.14.2;
Fix another typo which causes decrement against a NULL pointer.

Also revert rev 1.9, which shut up gcc's "uninitialized variable"
warning that actually pointed out the typo correctly. Oh well.
 1.13 21-May-2013  tsutsui Fix fatal (but probably unused) typo in ri->ri_hwbits case in copycols.
 1.12 08-Apr-2010  macallan branches: 1.12.8; 1.12.18;
add support for shadow framebuffers
tested on sparc with a cg12
 1.11 15-Mar-2009  cegger branches: 1.11.2; 1.11.4;
ansify function definitions
 1.10 28-Apr-2008  martin branches: 1.10.8; 1.10.14;
Remove clause 3 and 4 from TNF licenses
 1.9 18-May-2006  mrg branches: 1.9.58; 1.9.60; 1.9.62;
quieten GCC uninitialise variable warnings.
 1.8 31-May-2002  thorpej branches: 1.8.22; 1.8.36; 1.8.38; 1.8.40; 1.8.44;
Avoid sequence point error.
 1.7 13-Jun-2000  ad branches: 1.7.4; 1.7.6; 1.7.18;
Use my proper name.
 1.6 12-Apr-2000  pk branches: 1.6.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.5 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.4 21-Jul-1999  ad branches: 1.4.2; 1.4.4; 1.4.6;
- Style nits
- Kill some of the dainbramage in variable-depth copycols()
 1.3 18-May-1999  ad branches: 1.3.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.2 29-Apr-1999  ad Initialize db in copycols() to zero to pacify gcc, as noted by Simon Burge.
This doesn't change anything until it's fixed.
 1.1 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.3.2.2 02-Aug-1999  thorpej Update from trunk.
 1.3.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.4.6.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.4.4.1 15-Nov-1999  fvdl Sync with -current
 1.4.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.6.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.7.18.1 20-Jun-2002  gehenna catch up with -current.
 1.7.6.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.7.4.1 20-Jun-2002  nathanw Catch up to -current.
 1.8.44.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.8.40.1 24-May-2006  yamt sync with head.
 1.8.38.1 01-Jun-2006  kardel Sync with head.
 1.8.36.1 09-Sep-2006  rpaulo sync with head
 1.8.22.1 21-Jun-2006  yamt sync with head.
 1.9.62.3 11-Aug-2010  yamt sync with head.
 1.9.62.2 04-May-2009  yamt sync with head.
 1.9.62.1 16-May-2008  yamt sync with head.
 1.9.60.1 18-May-2008  yamt sync with head.
 1.9.58.1 02-Jun-2008  mjf Sync with HEAD.
 1.10.14.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.10.8.1 28-Apr-2009  skrll Sync with HEAD.
 1.11.4.1 30-May-2010  rmind sync with head
 1.11.2.1 30-Apr-2010  uebayasi Sync with HEAD.
 1.12.18.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.12.18.1 23-Jun-2013  tls resync from head
 1.12.8.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.14.2.1 18-May-2014  rmind sync with head
 1.15.30.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.18.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.10 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.9 02-Dec-2013  tsutsui branches: 1.9.30; 1.9.36;
Fix 1 bpp rasops copycols() op:

- fix inverted shift direction in MBL() and MBR() macro in BE case
(used by GETBITS() and PUTBITS() in copycols() function in rasops_bitops.h)
- make all bitmask values unsigned and use proper uint32_t types for
bitmap variables (to avoid arithmetic right shift)
- fix various botches in right-to-left copy op (logic is taken from hp300)

Tested on bwtwo(4) on NetBSD/sparc.
 1.8 28-Apr-2008  martin branches: 1.8.34; 1.8.44; 1.8.50;
Remove clause 3 and 4 from TNF licenses
 1.7 13-Nov-2001  lukem branches: 1.7.114; 1.7.116; 1.7.118;
add/cleanup RCSIDs
 1.6 12-Jan-2001  bjh21 branches: 1.6.2; 1.6.4;
The mask tables have no excuse for being in the data segment.
 1.5 13-Jun-2000  ad Use my proper name.
 1.4 12-Apr-2000  pk branches: 1.4.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.3 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.2 18-May-1999  ad branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.1 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.2.6.1 15-Nov-1999  fvdl Sync with -current
 1.2.4.2 18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.2.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.4.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.6.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.6.2.1 14-Nov-2001  nathanw Catch up to -current.
 1.7.118.1 16-May-2008  yamt sync with head.
 1.7.116.1 18-May-2008  yamt sync with head.
 1.7.114.1 02-Jun-2008  mjf Sync with HEAD.
 1.8.50.1 18-May-2014  rmind sync with head
 1.8.44.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.8.34.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.9.36.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.9.30.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.9 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.8 02-Dec-2013  tsutsui branches: 1.8.30; 1.8.36;
Fix 1 bpp rasops copycols() op:

- fix inverted shift direction in MBL() and MBR() macro in BE case
(used by GETBITS() and PUTBITS() in copycols() function in rasops_bitops.h)
- make all bitmask values unsigned and use proper uint32_t types for
bitmap variables (to avoid arithmetic right shift)
- fix various botches in right-to-left copy op (logic is taken from hp300)

Tested on bwtwo(4) on NetBSD/sparc.
 1.7 28-Apr-2008  martin branches: 1.7.34; 1.7.44; 1.7.50;
Remove clause 3 and 4 from TNF licenses
 1.6 12-Jan-2001  bjh21 branches: 1.6.122; 1.6.124; 1.6.126;
The mask tables have no excuse for being in the data segment.
 1.5 13-Jun-2000  ad Use my proper name.
 1.4 12-Apr-2000  pk branches: 1.4.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds
 1.3 23-Oct-1999  ad - New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.
 1.2 18-May-1999  ad branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.
 1.1 26-Apr-1999  ad Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.
 1.2.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.2.6.1 15-Nov-1999  fvdl Sync with -current
 1.2.4.2 18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.2.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.4.2.1 22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.6.126.1 16-May-2008  yamt sync with head.
 1.6.124.1 18-May-2008  yamt sync with head.
 1.6.122.1 02-Jun-2008  mjf Sync with HEAD.
 1.7.50.1 18-May-2014  rmind sync with head
 1.7.44.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.7.34.1 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.8.36.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.8.30.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.8 10-Aug-2019  rin branches: 1.8.8;
Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.7 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.6 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.5 30-Jul-2019  rin branches: 1.5.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.4 29-Jul-2019  rin Avoid undefined behavior when converting unaligned be32 data to
host integer, found by kUBSan.

Pointed out by msaitoh.
 1.3 28-Jul-2019  rin Avoid memset to framebuffer.

XXX
There still remains memset in rasops8.c, which will be removed soon
when putchar_aa functions are factorized.
 1.2 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.1 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.5.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.8.8.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.8.8.1 10-Aug-2019  martin file rasops_putchar.h was added on branch phil-wifi on 2020-04-13 08:04:47 +0000
 1.7 07-Aug-2019  rin Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.
 1.6 31-Jul-2019  rin Provide buffer capable of single-row pixels in order to make things simpler.

XXX
Bump kernel version for rasops_info later.
 1.5 31-Jul-2019  rin Reduce memcpy.
 1.4 30-Jul-2019  rin branches: 1.4.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.3 29-Jul-2019  rin Simplify and tiny optimization.
 1.2 29-Jul-2019  rin Support anti-aliasing for depth 24.
 1.1 29-Jul-2019  rin Factor out putchar_aa functions into rasops_putchar_aa.h, which includes
the following fixes:

- stop using memset to framebuffer for depth 8
- correctly support non-standard positions/lengths of RGB bits in pixel
 1.4.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.15 14-Aug-2019  rin branches: 1.15.8;
When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.14 10-Aug-2019  rin Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.
 1.13 09-Aug-2019  rin Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.
 1.12 07-Aug-2019  rin Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.

Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.

Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.

Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.
 1.11 07-Aug-2019  rin Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.
 1.10 31-Jul-2019  rin Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.
 1.9 30-Jul-2019  rin branches: 1.9.2;
Try to improve performance when shadow framebuffer is present;
Use block copy from shadow fb to real fb, instead of repeating
the same operations to two fb's.
 1.8 29-Jul-2019  rin Try to fix problem reported by ryoon:
http://mail-index.netbsd.org/source-changes-d/2019/07/29/msg011516.html

There are apparent bugs for shadow framebuffer. Sorry for the breakage.
 1.7 29-Jul-2019  rin Convert rasops2.c and rasops4.c to use rasops_putchar_width.h.
Style.
 1.6 28-Jul-2019  rin Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.
 1.5 28-Jul-2019  rin Simplify and style. No functional changes intended.
 1.4 28-Jul-2019  rin Redo fix in rev 1.2
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_putchar_width.h#rev1.2
in a correct way.

For 24bpp framebuffer, we need to use ``stamp triplets'' even for fully
blank or filled rows.

Now, background-color for white space and underline are correctly drawn.
 1.3 28-Jul-2019  rin Fix factorization fallout; pointer for shadow framebuffer should be
rolled back before drawing underline.
 1.2 26-Jul-2019  rin XXX
Add hack so that colorbars(6) works for 24-bpp.
The code before factorization did the same in a strange way.
 1.1 25-Jul-2019  rin Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.
 1.9.2.1 15-Aug-2019  martin Pull up following revision(s) (requested by rin in ticket #56):

sys/dev/rasops/rasops.c: revision 1.120
sys/dev/rasops/rasops.h: revision 1.40
sys/dev/rasops/rasops.c: revision 1.121
sys/dev/rasops/rasops.h: revision 1.41
sys/dev/rasops/rasops.c: revision 1.122
sys/dev/rasops/rasops.h: revision 1.42
sys/dev/rasops/rasops.h: revision 1.43
sys/dev/rasops/rasops.h: revision 1.44
sys/dev/rasops/rasops.h: revision 1.45
sys/dev/rasops/rasops.h: revision 1.46
sys/dev/rasops/rasops.h: revision 1.47
sys/dev/rasops/rasops.h: revision 1.48
sys/dev/rasops/rasops32.c: revision 1.40
sys/dev/rasops/rasops32.c: revision 1.41
sys/dev/rasops/rasops32.c: revision 1.42
sys/dev/rasops/rasops32.c: revision 1.43
sys/dev/rasops/rasops32.c: revision 1.44
sys/dev/rasops/rasops32.c: revision 1.45
sys/dev/rasops/rasops32.c: revision 1.46
sys/dev/rasops/rasops1-4_putchar.h: revision 1.1
sys/dev/rasops/rasops1-4_putchar.h: revision 1.2
sys/dev/rasops/rasops1-4_putchar.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.3
sys/dev/rasops/rasops1_putchar_width.h: revision 1.4
sys/dev/rasops/rasops1_putchar_width.h: revision 1.5
sys/dev/rasops/rasops1_putchar_width.h: revision 1.6
sys/dev/rasops/README: revision 1.7
sys/dev/rasops/rasops_putchar_aa.h: revision 1.5
sys/dev/rasops/rasops_putchar_aa.h: revision 1.6
sys/dev/rasops/rasops8.c: revision 1.45
sys/dev/rasops/rasops8.c: revision 1.46
sys/dev/rasops/rasops8.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.41
sys/dev/rasops/rasops8.c: revision 1.49
sys/dev/rasops/rasops24.c: revision 1.42
sys/dev/rasops/rasops24.c: revision 1.43
sys/dev/rasops/rasops24.c: revision 1.44
sys/dev/rasops/rasops_masks.c: revision 1.10
doc/CHANGES: revision 1.2566
sys/dev/rasops/rasops24.c: revision 1.45
doc/CHANGES: revision 1.2567
sys/dev/rasops/rasops24.c: revision 1.46
sys/dev/rasops/rasops24.c: revision 1.47
sys/dev/rasops/rasops24.c: revision 1.48
sys/dev/rasops/rasops24.c: revision 1.49
sys/dev/rasops/rasops_bitops.h: revision 1.19
sys/dev/rasops/rasops_putchar_aa.h: file removal
sys/dev/wscons/wsdisplay_vcons.c: revision 1.40
sys/dev/rasops/rasops8.c: revision 1.50
sys/dev/rasops/rasops8.c: revision 1.51
sys/dev/rasops/rasops24.c: revision 1.50
sys/arch/luna68k/dev/omrasops.c: revision 1.21
sys/dev/rasops/rasops_bitops.h: revision 1.20
sys/dev/wsfb/genfb.c: revision 1.68
sys/dev/rasops/rasops_bitops.h: revision 1.21
sys/dev/wsfb/genfb.c: revision 1.69
sys/dev/rasops/rasops_putchar_width.h: revision 1.10
sys/dev/rasops/rasops_bitops.h: revision 1.22
sys/dev/rasops/rasops_putchar_width.h: revision 1.11
sys/dev/rasops/rasops_bitops.h: revision 1.23
sys/dev/rasops/rasops_putchar_width.h: revision 1.12
sys/dev/rasops/rasops_bitops.h: revision 1.24
sys/dev/rasops/rasops_putchar_width.h: revision 1.13
sys/dev/rasops/rasops_bitops.h: revision 1.25
sys/dev/rasops/rasops_putchar_width.h: revision 1.14
sys/dev/rasops/rasops_putchar_width.h: revision 1.15
sys/dev/rasops/rasops1.c: revision 1.32
sys/dev/rasops/rasops1.c: revision 1.33
sys/dev/rasops/rasops1.c: revision 1.34
sys/dev/rasops/rasops1.c: revision 1.35
sys/dev/rasops/rasops1.c: revision 1.36
sys/dev/rasops/rasops1.c: revision 1.37
sys/dev/rasops/rasops4.c: revision 1.21
sys/dev/rasops/rasops4.c: revision 1.22
sys/dev/rasops/rasops4.c: revision 1.23
sys/dev/rasops/rasops4.c: revision 1.24
sys/dev/rasops/rasops4.c: revision 1.25
sys/dev/rasops/rasops4.c: revision 1.26
sys/dev/rasops/rasops4.c: revision 1.27
sys/dev/rasops/rasops4.c: revision 1.28
sys/dev/wsfb/genfb.c: revision 1.70
sys/dev/rasops/rasops2.c: revision 1.27
sys/dev/rasops/rasops2.c: revision 1.28
share/man/man9/rasops.9: revision 1.18
sys/dev/rasops/rasops.c: revision 1.102
sys/dev/rasops/rasops2.c: revision 1.29
share/man/man9/rasops.9: revision 1.19
sys/dev/rasops/rasops.c: revision 1.103
sys/dev/rasops/rasops.c: revision 1.104
sys/dev/rasops/rasops.c: revision 1.105
sys/dev/rasops/rasops.c: revision 1.106
sys/dev/rasops/rasops.c: revision 1.107
sys/dev/rasops/rasops_putchar.h: revision 1.6
sys/dev/rasops/rasops.c: revision 1.108
sys/dev/rasops/rasops_putchar.h: revision 1.7
sys/dev/rasops/rasops.c: revision 1.109
sys/dev/rasops/rasops_putchar.h: revision 1.8
sys/dev/rasops/rasops2.c: revision 1.30
sys/dev/rasops/rasops2.c: revision 1.31
sys/dev/rasops/rasops15.c: revision 1.32
sys/dev/rasops/rasops2.c: revision 1.32
sys/dev/rasops/rasops15.c: revision 1.33
sys/dev/rasops/rasops2.c: revision 1.33
sys/dev/rasops/rasops15.c: revision 1.34
sys/dev/rasops/rasops15.c: revision 1.35
sys/dev/rasops/rasops15.c: revision 1.36
sys/dev/rasops/rasops.c: revision 1.110
sys/dev/rasops/rasops15.c: revision 1.37
sys/dev/rasops/rasops.c: revision 1.111
sys/dev/rasops/rasops15.c: revision 1.38
sys/dev/rasops/rasops.c: revision 1.112
sys/dev/rasops/rasops15.c: revision 1.39
sys/dev/rasops/rasops.c: revision 1.113
sys/dev/rasops/rasops.c: revision 1.114
sys/dev/rasops/rasops.c: revision 1.115
sys/dev/rasops/rasops_masks.h: revision 1.9
sys/dev/rasops/rasops.c: revision 1.116
sys/dev/rasops/rasops.c: revision 1.117
sys/dev/rasops/rasops.c: revision 1.118
sys/dev/rasops/rasops.c: revision 1.119
sys/dev/rasops/rasops.h: revision 1.39

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold
Switch to per-device stamp, and retire stamp_mutex.

Provide buffer capable of single-row pixels in order to make things simpler.

Factor out copy-paste. No functional changes.
When font is switched, not only putchar, but also other ri_ops can be
changed by backend driver, e.g., see rasops1.c:
https://nxr.netbsd.org/xref/src/sys/dev/rasops/rasops1.c#58
4 is 1 << 2, not 1 << 3...

Fix erasecols and do_cursor for font width >= 32 bits.
Also, some cosmetic clean-up's.

Oops, for rasops_copycols(), we cannot use memmove even if src == dst.
On the other hand, memmove is safe for rasops_copyrows().
Fix unaligned writes to buffer, that are introduced in 1.105:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.105

Support font width 32 on monochrome screen.

Remove duplicate substitution. Style. No functional changes.

Correct copy count. This affects ``left-to-right'' copy for region
including word boundary.

Fix a bug in shadow fb support for copycols on 1, 2, and 4bpp screen,
which was introduced in 1.18:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops_bitops.h#rev1.18

Add general putchar functions for 2 and 4bpp.
Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Cosmetic changes. No functional changes.

Reflect reality.

Notify size of shadow framebuffer if enabled.

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Protect rasops_copy{rows,cols}() by _RASOPS_PRIVATE.

Use _KERNEL_OPT.

Simplify calculation for 12-byte alignment.
No functional changes.

Fix black color-attribution for depths 2 and 4.

Depth 2 is monochrome.
IMO, it is impossible to support ANSI colors on 2-bpp display; fore-
and background can be same value even if they are different colors
logically.

Fix a critical bug for rasops_copyrows() introduced in rev. 1.90:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops.c#rev1.90
When src < dst, we have to copy backward.

Simplify rasops_do_cursor():
- Use static masks similar to that used in rasops_bitops.h,
rather than generating them on the fly.
- Use pointer for proper type to avoid unnecessary casts.

Use "hp" instead of "hrp" consistently with other files.
No functional changes.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Oops, revert an unintentional change for now.

If RI_CLEAR is set, do not forget to clear real framebuffer.

Modify struct rasops_info again (ride 9.99.4 bump).
- remove ri_buf and friends.
- remove ri_stamp and frieds.
- introduce ri_ul, which will be used for scaling underline with font.

Also add hack for ri_ul; adjust its size to obsoleted member, ri_delta,
which was only used rasops routines internally. Now, size and offsets of
all members of struct rasops_info become same with netbsd-9, -8, and -7,
again. So we can safelly pull up fixes to any release branches!

Scaling dimensions of underline by font height.

Currently,
- offset of underline is fixed to 1-row from bottom of characters, and
- height of underline is fixed to 1.
Both are good for standard 8x16 fonts. However, it is too thin for
larger fonts, especially when used on display of high resolution.
Also, 1-row offset of underline is ugly for small fonts, e.g.,
spleen5x8.
Therefore, adjust offset and height as,
- no changes for standard 16-height fonts.
- scaling by font height for larger fonts.
- set offset to zero for fonts of height smaller than 16.

Merge rasops_putchar_aa.h into rasops_putchar.h.

Support scaling underline dimensions by font height.

Separate general putchar for 1-4bpp from rasops_bitops:
- Support anti-aliasing for 2bpp, which works perfectly!
- Support scaling underline dimensions with font height.

We support anti-aliasing for depth 2.
Use switch appropriately.
- Stop showing struct rasops_info; readers can read the header itself.
- Correct description for optimized font widths.
- Remove strange blank line.

Try to improve formatting and naration.

Make rasops_erase{rows,cols}() public again; hp300/diofb uses them.
Pointed out by martin.

When legacy Apple 4-bpp color palette is used, make green dark so that
kernel messages are printed nicely on white background.

Fix color range overflow; we cannot make bright colors more brighter.

Correctly check whether character is in font in rasops_mapchar().
Also, make sure that in putchar functions for completeness.

Fix bug introduced in rev. 1.69:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/wsfb/genfb.c#rev1.69
is_bgr should be initialized to false. Otherwise, color becomes strange
for depths 24 and 32 unless backend explicitly set "is_bgr" property.

Set 4-bpp devcmap in a similar manner to non-RGB case of 8-bpp.
No functional changes since this is not in use (4-bpp is monochrome).

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"

No particular functional changes intended.

My work for rasops(9) was finished (hopefully).

I will send pull-up request for netbsd-9, if there are no new failures
reported within few days.

Fix format in order not to confuse changes2html script.
Minor improvements of wording for my entry.

When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.
 1.15.8.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.15.8.1 14-Aug-2019  martin file rasops_putchar_width.h was added on branch phil-wifi on 2020-04-13 08:04:47 +0000

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