Annotation of sys/dev/rasops/rasops32.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: rasops32.c,v 1.4 2002/07/27 22:17:49 miod Exp $ */
2: /* $NetBSD: rasops32.c,v 1.7 2000/04/12 14:22:29 pk Exp $ */
3:
4: /*-
5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Andrew Doran.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #include <sys/param.h>
41: #include <sys/systm.h>
42: #include <sys/time.h>
43:
44: #include <dev/wscons/wsdisplayvar.h>
45: #include <dev/wscons/wsconsio.h>
46: #include <dev/rasops/rasops.h>
47:
48: void rasops32_putchar(void *, int, int, u_int, long);
49:
50: /*
51: * Initialize a 'rasops_info' descriptor for this depth.
52: */
53: void
54: rasops32_init(ri)
55: struct rasops_info *ri;
56: {
57:
58: if (ri->ri_rnum == 0) {
59: ri->ri_rnum = 8;
60: ri->ri_rpos = 0;
61: ri->ri_gnum = 8;
62: ri->ri_gpos = 8;
63: ri->ri_bnum = 8;
64: ri->ri_bpos = 16;
65: }
66:
67: ri->ri_ops.putchar = rasops32_putchar;
68: }
69:
70: /*
71: * Paint a single character.
72: */
73: void
74: rasops32_putchar(cookie, row, col, uc, attr)
75: void *cookie;
76: int row, col;
77: u_int uc;
78: long attr;
79: {
80: int width, height, cnt, fs, fb, clr[2];
81: struct rasops_info *ri;
82: int32_t *dp, *rp;
83: u_char *fr;
84:
85: ri = (struct rasops_info *)cookie;
86:
87: #ifdef RASOPS_CLIPPING
88: /* Catches 'row < 0' case too */
89: if ((unsigned)row >= (unsigned)ri->ri_rows)
90: return;
91:
92: if ((unsigned)col >= (unsigned)ri->ri_cols)
93: return;
94: #endif
95:
96: rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
97:
98: height = ri->ri_font->fontheight;
99: width = ri->ri_font->fontwidth;
100:
101: clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
102: clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
103:
104: if (uc == ' ') {
105: while (height--) {
106: dp = rp;
107: DELTA(rp, ri->ri_stride, int32_t *);
108:
109: for (cnt = width; cnt; cnt--)
110: *dp++ = clr[0];
111: }
112: } else {
113: uc -= ri->ri_font->firstchar;
114: fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
115: fs = ri->ri_font->stride;
116:
117: while (height--) {
118: dp = rp;
119: fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) |
120: (fr[0] << 24);
121: fr += fs;
122: DELTA(rp, ri->ri_stride, int32_t *);
123:
124: for (cnt = width; cnt; cnt--) {
125: *dp++ = clr[(fb >> 31) & 1];
126: fb <<= 1;
127: }
128: }
129: }
130:
131: /* Do underline */
132: if ((attr & 1) != 0) {
133: DELTA(rp, -(ri->ri_stride << 1), int32_t *);
134:
135: while (width--)
136: *rp++ = clr[1];
137: }
138: }
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