1 /* $NetBSD: rasops32.c,v 1.12 2003/04/16 23:28:41 petrov 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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: rasops32.c,v 1.12 2003/04/16 23:28:41 petrov Exp $");
41
42 #include "opt_rasops.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/time.h>
47
48 #include <dev/wscons/wsdisplayvar.h>
49 #include <dev/wscons/wsconsio.h>
50 #include <dev/rasops/rasops.h>
51
52 static void rasops32_putchar __P((void *, int, int, u_int, long attr));
53
54 /*
55 * Initialize a 'rasops_info' descriptor for this depth.
56 */
57 void
58 rasops32_init(ri)
59 struct rasops_info *ri;
60 {
61
62 if (ri->ri_rnum == 0) {
63 ri->ri_rnum = 8;
64 ri->ri_rpos = 0;
65 ri->ri_gnum = 8;
66 ri->ri_gpos = 8;
67 ri->ri_bnum = 8;
68 ri->ri_bpos = 16;
69 }
70
71 ri->ri_ops.putchar = rasops32_putchar;
72 }
73
74 /*
75 * Paint a single character.
76 */
77 static void
78 rasops32_putchar(cookie, row, col, uc, attr)
79 void *cookie;
80 int row, col;
81 u_int uc;
82 long attr;
83 {
84 int width, height, cnt, fs, fb, clr[2];
85 struct rasops_info *ri;
86 int32_t *dp, *rp;
87 u_char *fr;
88
89 ri = (struct rasops_info *)cookie;
90
91 #ifdef RASOPS_CLIPPING
92 /* Catches 'row < 0' case too */
93 if ((unsigned)row >= (unsigned)ri->ri_rows)
94 return;
95
96 if ((unsigned)col >= (unsigned)ri->ri_cols)
97 return;
98 #endif
99
100 /* check if character fits into font limits */
101 if (uc < ri->ri_font->firstchar ||
102 (uc - ri->ri_font->firstchar) >= ri->ri_font->numchars)
103 return;
104
105 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
106
107 height = ri->ri_font->fontheight;
108 width = ri->ri_font->fontwidth;
109
110 clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
111 clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
112
113 if (uc == ' ') {
114 while (height--) {
115 dp = rp;
116 DELTA(rp, ri->ri_stride, int32_t *);
117
118 for (cnt = width; cnt; cnt--)
119 *dp++ = clr[0];
120 }
121 } else {
122 uc -= ri->ri_font->firstchar;
123 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
124 fs = ri->ri_font->stride;
125
126 while (height--) {
127 dp = rp;
128 fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) |
129 (fr[0] << 24);
130 fr += fs;
131 DELTA(rp, ri->ri_stride, int32_t *);
132
133 for (cnt = width; cnt; cnt--) {
134 *dp++ = clr[(fb >> 31) & 1];
135 fb <<= 1;
136 }
137 }
138 }
139
140 /* Do underline */
141 if ((attr & 1) != 0) {
142 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
143
144 while (width--)
145 *rp++ = clr[1];
146 }
147 }
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