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rasops15.c revision 1.33 
      1 /* 	$NetBSD: rasops15.c,v 1.33 2019/07/31 02:04:14 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: rasops15.c,v 1.33 2019/07/31 02:04:14 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 
     44 #define	_RASOPS_PRIVATE
     45 #include <dev/rasops/rasops.h>
     46 
     47 static void 	rasops15_putchar(void *, int, int, u_int, long);
     48 static void 	rasops15_putchar_aa(void *, int, int, u_int, long);
     49 #ifndef RASOPS_SMALL
     50 static void 	rasops15_putchar8(void *, int, int, u_int, long);
     51 static void 	rasops15_putchar12(void *, int, int, u_int, long);
     52 static void 	rasops15_putchar16(void *, int, int, u_int, long);
     53 static void	rasops15_makestamp(struct rasops_info *, long);
     54 #endif
     55 
     56 #ifndef RASOPS_SMALL
     57 /*
     58  * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
     59  * destination uint32_t[0] = STAMP_READ(offset)
     60  * destination uint32_t[1] = STAMP_READ(offset + 4)
     61  */
     62 #define	STAMP_SHIFT(fb, n)	((n) ? (fb) >> 1: (fb) << 3)
     63 #define	STAMP_MASK		(0xf << 3)
     64 #define	STAMP_READ(o)		(*(uint32_t *)((uint8_t *)stamp + (o)))
     65 #endif
     66 
     67 /*
     68  * Initialize rasops_info struct for this colordepth.
     69  */
     70 void
     71 rasops15_init(struct rasops_info *ri)
     72 {
     73 
     74 	if (ri->ri_rnum == 0) {
     75 		ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 5;
     76 		ri->ri_gnum += (ri->ri_depth == 16);
     77 
     78 		ri->ri_rpos = 10 + (ri->ri_depth == 16);
     79 		ri->ri_gpos = 5;
     80 		ri->ri_bpos = 0;
     81 	}
     82 
     83 	if (FONT_IS_ALPHA(ri->ri_font)) {
     84 		ri->ri_ops.putchar = rasops15_putchar_aa;
     85 		return;
     86 	}
     87 
     88 	switch (ri->ri_font->fontwidth) {
     89 #ifndef RASOPS_SMALL
     90 	case 8:
     91 		ri->ri_ops.putchar = rasops15_putchar8;
     92 		break;
     93 	case 12:
     94 		ri->ri_ops.putchar = rasops15_putchar12;
     95 		break;
     96 	case 16:
     97 		ri->ri_ops.putchar = rasops15_putchar16;
     98 		break;
     99 #endif	/* !RASOPS_SMALL */
    100 	default:
    101 		ri->ri_ops.putchar = rasops15_putchar;
    102 		return;
    103 	}
    104 
    105 #ifndef RASOPS_SMALL
    106 	rasops_allocstamp(ri, sizeof(uint32_t) * 32);
    107 #endif
    108 }
    109 
    110 #define	RASOPS_DEPTH	15
    111 #include "rasops_putchar.h"
    112 #include "rasops_putchar_aa.h"
    113 
    114 #ifndef RASOPS_SMALL
    115 /*
    116  * Recompute the 4x1 blitting stamp.
    117  */
    118 static void
    119 rasops15_makestamp(struct rasops_info *ri, long attr)
    120 {
    121 	uint32_t *stamp = (uint32_t *)ri->ri_stamp;
    122 	uint32_t fg, bg;
    123 	int i;
    124 
    125 	fg = ri->ri_devcmap[((uint32_t)attr >> 24) & 0xf] & 0xffff;
    126 	bg = ri->ri_devcmap[((uint32_t)attr >> 16) & 0xf] & 0xffff;
    127 	ri->ri_stamp_attr = attr;
    128 
    129 	for (i = 0; i < 32; i += 2) {
    130 #if BYTE_ORDER == LITTLE_ENDIAN
    131 		stamp[i]      = (i & 16 ? fg : bg);
    132 		stamp[i]     |= (i &  8 ? fg : bg) << 16;
    133 		stamp[i + 1]  = (i &  4 ? fg : bg);
    134 		stamp[i + 1] |= (i &  2 ? fg : bg) << 16;
    135 #else
    136 		stamp[i]      = (i &  8 ? fg : bg);
    137 		stamp[i]     |= (i & 16 ? fg : bg) << 16;
    138 		stamp[i + 1]  = (i &  2 ? fg : bg);
    139 		stamp[i + 1] |= (i &  4 ? fg : bg) << 16;
    140 #endif
    141 	}
    142 }
    143 
    144 #define	RASOPS_WIDTH	8
    145 #include "rasops_putchar_width.h"
    146 #undef	RASOPS_WIDTH
    147 
    148 #define	RASOPS_WIDTH	12
    149 #include "rasops_putchar_width.h"
    150 #undef	RASOPS_WIDTH
    151 
    152 #define	RASOPS_WIDTH	16
    153 #include "rasops_putchar_width.h"
    154 #undef	RASOPS_WIDTH
    155 
    156 #endif /* !RASOPS_SMALL */
    157