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rasops32.c revision 1.39 
      1 /*	 $NetBSD: rasops32.c,v 1.39 2019/07/29 10:55:56 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.39 2019/07/29 10:55:56 rin Exp $");
     34 
     35 #include "opt_rasops.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/time.h>
     40 
     41 #include <dev/wscons/wsdisplayvar.h>
     42 #include <dev/wscons/wsconsio.h>
     43 #include <dev/rasops/rasops.h>
     44 
     45 static void 	rasops32_putchar(void *, int, int, u_int, long);
     46 static void 	rasops32_putchar_aa(void *, int, int, u_int, long);
     47 #ifndef RASOPS_SMALL
     48 static void	rasops32_putchar8(void *, int, int, u_int, long);
     49 static void	rasops32_putchar12(void *, int, int, u_int, long);
     50 static void	rasops32_putchar16(void *, int, int, u_int, long);
     51 static void	rasops32_makestamp(struct rasops_info *, long);
     52 
     53 /*
     54  * 4x1 stamp for optimized character blitting
     55  */
     56 static uint32_t	stamp[64];
     57 static long	stamp_attr;
     58 static int	stamp_mutex;	/* XXX see note in readme */
     59 #endif
     60 
     61 /*
     62  * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
     63  * destination uint32_t[0] = STAMP_READ(offset)
     64  * destination uint32_t[1] = STAMP_READ(offset +  4)
     65  * destination uint32_t[2] = STAMP_READ(offset +  8)
     66  * destination uint32_t[3] = STAMP_READ(offset + 12)
     67  */
     68 #define	STAMP_SHIFT(fb, n)	((n) ? (fb) : (fb) << 4)
     69 #define	STAMP_MASK		(0xf << 4)
     70 #define	STAMP_READ(o)		(*(uint32_t *)((uint8_t *)stamp + (o)))
     71 
     72 /*
     73  * Initialize a 'rasops_info' descriptor for this depth.
     74  */
     75 void
     76 rasops32_init(struct rasops_info *ri)
     77 {
     78 
     79 	if (ri->ri_rnum == 0) {
     80 		ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 8;
     81 
     82 		ri->ri_rpos = 0;
     83 		ri->ri_gpos = 8;
     84 		ri->ri_bpos = 16;
     85 	}
     86 
     87 	if (FONT_IS_ALPHA(ri->ri_font)) {
     88 		ri->ri_ops.putchar = rasops32_putchar_aa;
     89 		return;
     90 	}
     91 
     92 	switch (ri->ri_font->fontwidth) {
     93 #ifndef RASOPS_SMALL
     94 	case 8:
     95 		ri->ri_ops.putchar = rasops32_putchar8;
     96 		break;
     97 	case 12:
     98 		ri->ri_ops.putchar = rasops32_putchar12;
     99 		break;
    100 	case 16:
    101 		ri->ri_ops.putchar = rasops32_putchar16;
    102 		break;
    103 #endif
    104 	default:
    105 		ri->ri_ops.putchar = rasops32_putchar;
    106 		break;
    107 	}
    108 }
    109 
    110 #define	RASOPS_DEPTH	32
    111 #include "rasops_putchar.h"
    112 #include "rasops_putchar_aa.h"
    113 
    114 #ifndef RASOPS_SMALL
    115 /*
    116  * Recompute the blitting stamp.
    117  */
    118 static void
    119 rasops32_makestamp(struct rasops_info *ri, long attr)
    120 {
    121 	uint32_t fg, bg;
    122 	int i;
    123 
    124 	fg = ri->ri_devcmap[((uint32_t)attr >> 24) & 0xf];
    125 	bg = ri->ri_devcmap[((uint32_t)attr >> 16) & 0xf];
    126 	stamp_attr = attr;
    127 
    128 	for (i = 0; i < 64; i += 4) {
    129 		stamp[i + 0] = i & 32 ? fg : bg;
    130 		stamp[i + 1] = i & 16 ? fg : bg;
    131 		stamp[i + 2] = i &  8 ? fg : bg;
    132 		stamp[i + 3] = i &  4 ? fg : bg;
    133 	}
    134 }
    135 
    136 #define	RASOPS_WIDTH	8
    137 #include "rasops_putchar_width.h"
    138 #undef	RASOPS_WIDTH
    139 
    140 #define	RASOPS_WIDTH	12
    141 #include "rasops_putchar_width.h"
    142 #undef	RASOPS_WIDTH
    143 
    144 #define	RASOPS_WIDTH	16
    145 #include "rasops_putchar_width.h"
    146 #undef	RASOPS_WIDTH
    147 
    148 #endif /* !RASOPS_SMALL */
    149