1/* $NetBSD: rasops32.c,v 1.29 2013/09/15 09:39:47 martin 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 1.29 2013/09/15 09:39:47 martin 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
45static void rasops32_putchar(void *, int, int, u_int, long attr);
46static void rasops32_putchar_aa(void *, int, int, u_int, long attr);
47
48/*
49 * Initialize a 'rasops_info' descriptor for this depth.
50 */
51void
52rasops32_init(struct rasops_info *ri)
53{
54
55 if (ri->ri_rnum == 0) {
56 ri->ri_rnum = 8;
57 ri->ri_rpos = 0;
58 ri->ri_gnum = 8;
59 ri->ri_gpos = 8;
60 ri->ri_bnum = 8;
61 ri->ri_bpos = 16;
62 }
63
64 if (FONT_IS_ALPHA(ri->ri_font)) {
65 ri->ri_ops.putchar = rasops32_putchar_aa;
66 } else
67 ri->ri_ops.putchar = rasops32_putchar;
68}
69
70/*
71 * Paint a single character.
72 */
73
74static void
75rasops32_putchar(void *cookie, int row, int col, u_int uc, long attr)
76{
77 int width, height, cnt, fs, fb, clr[2];
78 struct rasops_info *ri = (struct rasops_info *)cookie;
79 struct wsdisplay_font *font = PICK_FONT(ri, uc);
80 int32_t *dp, *rp, *hp, *hrp;
81 u_char *fr;
82
83 hp = hrp = NULL;
84
85#ifdef RASOPS_CLIPPING
86 /* Catches 'row < 0' case too */
87 if ((unsigned)row >= (unsigned)ri->ri_rows)
88 return;
89
90 if ((unsigned)col >= (unsigned)ri->ri_cols)
91 return;
92#endif
93
94 /* check if character fits into font limits */
95 if (!CHAR_IN_FONT(uc, font))
96 return;
97
98 rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
99 if (ri->ri_hwbits)
100 hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale +
101 col*ri->ri_xscale);
102
103 height = font->fontheight;
104 width = font->fontwidth;
105
106 clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
107 clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
108
109 if (uc == ' ') {
110 while (height--) {
111 dp = rp;
112 DELTA(rp, ri->ri_stride, int32_t *);
113 if (ri->ri_hwbits) {
114 hp = hrp;
115 DELTA(hrp, ri->ri_stride, int32_t *);
116 }
117
118 for (cnt = width; cnt; cnt--) {
119 *dp++ = clr[0];
120 if (ri->ri_hwbits)
121 *hp++ = clr[0];
122 }
123 }
124 } else {
125 fr = WSFONT_GLYPH(uc, font);
126 fs = font->stride;
127
128 while (height--) {
129 dp = rp;
130 fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) |
131 (fr[0] << 24);
132 fr += fs;
133 DELTA(rp, ri->ri_stride, int32_t *);
134 if (ri->ri_hwbits) {
135 hp = hrp;
136 DELTA(hrp, ri->ri_stride, int32_t *);
137 }
138
139 for (cnt = width; cnt; cnt--) {
140 *dp++ = clr[(fb >> 31) & 1];
141 if (ri->ri_hwbits)
142 *hp++ = clr[(fb >> 31) & 1];
143 fb <<= 1;
144 }
145 }
146 }
147
148 /* Do underline */
149 if ((attr & 1) != 0) {
150 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
151 if (ri->ri_hwbits)
152 DELTA(hrp, -(ri->ri_stride << 1), int32_t *);
153
154 while (width--) {
155 *rp++ = clr[1];
156 if (ri->ri_hwbits)
157 *hrp++ = clr[1];
158 }
159 }
160}
161
162static void
163rasops32_putchar_aa(void *cookie, int row, int col, u_int uc, long attr)
164{
165 int width, height, cnt, clr[2];
166 struct rasops_info *ri = (struct rasops_info *)cookie;
167 struct wsdisplay_font *font = PICK_FONT(ri, uc);
168 int32_t *dp, *rp;
169 uint8_t *rrp;
170 u_char *fr;
171 uint32_t buffer[64]; /* XXX */
172 int x, y, r, g, b, aval;
173 int r1, g1, b1, r0, g0, b0;
174
175#ifdef RASOPS_CLIPPING
176 /* Catches 'row < 0' case too */
177 if ((unsigned)row >= (unsigned)ri->ri_rows)
178 return;
179
180 if ((unsigned)col >= (unsigned)ri->ri_cols)
181 return;
182#endif
183
184 /* check if character fits into font limits */
185 if (!CHAR_IN_FONT(uc, font))
186 return;
187
188 rrp = (ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
189 rp = (int32_t *)rrp;
190
191 height = font->fontheight;
192 width = font->fontwidth;
193
194 clr[0] = ri->ri_devcmap[(attr >> 16) & 0xf];
195 clr[1] = ri->ri_devcmap[(attr >> 24) & 0xf];
196
197 if (uc == ' ') {
198 for (cnt = 0; cnt < width; cnt++)
199 buffer[cnt] = clr[0];
200 while (height--) {
201 dp = rp;
202 DELTA(rp, ri->ri_stride, int32_t *);
203 memcpy(dp, buffer, width << 2);
204 }
205 } else {
206 fr = WSFONT_GLYPH(uc, font);
207
208 r0 = (clr[0] >> 16) & 0xff;
209 r1 = (clr[1] >> 16) & 0xff;
210 g0 = (clr[0] >> 8) & 0xff;
211 g1 = (clr[1] >> 8) & 0xff;
212 b0 = clr[0] & 0xff;
213 b1 = clr[1] & 0xff;
214
215 for (y = 0; y < height; y++) {
216 dp = (uint32_t *)(rrp + ri->ri_stride * y);
217 for (x = 0; x < width; x++) {
218 aval = *fr;
219 if (aval == 0) {
220 buffer[x] = clr[0];
221 } else if (aval == 255) {
222 buffer[x] = clr[1];
223 } else {
224 r = aval * r1 + (255 - aval) * r0;
225 g = aval * g1 + (255 - aval) * g0;
226 b = aval * b1 + (255 - aval) * b0;
227 buffer[x] = (r & 0xff00) << 8 |
228 (g & 0xff00) |
229 (b & 0xff00) >> 8;
230 }
231 fr++;
232 }
233 memcpy(dp, buffer, width << 2);
234 }
235 }
236
237 /* Do underline */
238 if ((attr & 1) != 0) {
239 rp = (uint32_t *)rrp;
240 DELTA(rp, (ri->ri_stride * (height - 2)), int32_t *);
241 while (width--)
242 *rp++ = clr[1];
243 }
244}
245