1 /* $OpenBSD: rasops4.c,v 1.13 2023/01/18 11:08:49 nicm Exp $ */
2 /* $NetBSD: rasops4.c,v 1.4 2001/11/15 09:48:15 lukem 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/time.h>
36 #include <sys/endian.h>
37
38 #include <dev/wscons/wsdisplayvar.h>
39 #include <dev/wscons/wsconsio.h>
40 #include <dev/rasops/rasops.h>
41 #include <dev/rasops/rasops_masks.h>
42
43 int rasops4_copycols(void *, int, int, int, int);
44 int rasops4_erasecols(void *, int, int, int, uint32_t);
45 int rasops4_do_cursor(struct rasops_info *);
46 int rasops4_putchar(void *, int, int col, u_int, uint32_t);
47 #ifndef RASOPS_SMALL
48 int rasops4_putchar8(void *, int, int col, u_int, uint32_t);
49 int rasops4_putchar12(void *, int, int col, u_int, uint32_t);
50 int rasops4_putchar16(void *, int, int col, u_int, uint32_t);
51 void rasops4_makestamp(struct rasops_info *, uint32_t);
52
53 /*
54 * 4x1 stamp for optimized character blitting
55 */
56 static u_int16_t stamp[16];
57 static uint32_t stamp_attr;
58 static int stamp_mutex; /* XXX see note in README */
59 #endif
60
61 /*
62 * Initialize rasops_info struct for this colordepth.
63 */
64 void
rasops4_init(struct rasops_info * ri)65 rasops4_init(struct rasops_info *ri)
66 {
67 rasops_masks_init();
68
69 switch (ri->ri_font->fontwidth) {
70 #ifndef RASOPS_SMALL
71 case 8:
72 ri->ri_ops.putchar = rasops4_putchar8;
73 break;
74 case 12:
75 ri->ri_ops.putchar = rasops4_putchar12;
76 break;
77 case 16:
78 ri->ri_ops.putchar = rasops4_putchar16;
79 break;
80 #endif /* !RASOPS_SMALL */
81 default:
82 panic("fontwidth not 8/12/16 or RASOPS_SMALL - fixme!");
83 ri->ri_ops.putchar = rasops4_putchar;
84 break;
85 }
86
87 if ((ri->ri_font->fontwidth & 1) != 0) {
88 ri->ri_ops.erasecols = rasops4_erasecols;
89 ri->ri_ops.copycols = rasops4_copycols;
90 ri->ri_do_cursor = rasops4_do_cursor;
91 }
92 }
93
94 #ifdef notyet
95 /*
96 * Paint a single character. This is the generic version, this is ugly.
97 */
98 int
rasops4_putchar(void * cookie,int row,int col,u_int uc,uint32_t attr)99 rasops4_putchar(void *cookie, int row, int col, u_int uc, uint32_t attr)
100 {
101 int height, width, fs, rs, fb, bg, fg, lmask, rmask;
102 struct rasops_info *ri;
103 int32_t *rp;
104 u_char *fr;
105
106 ri = (struct rasops_info *)cookie;
107
108 #ifdef RASOPS_CLIPPING
109 /* Catches 'row < 0' case too */
110 if ((unsigned)row >= (unsigned)ri->ri_rows)
111 return 0;
112
113 if ((unsigned)col >= (unsigned)ri->ri_cols)
114 return 0;
115 #endif
116
117 width = ri->ri_font->fontwidth << 1;
118 height = ri->ri_font->fontheight;
119 col *= width;
120 rp = (int32_t *)(ri->ri_bits + row * ri->ri_yscale + ((col >> 3) & ~3));
121 col = col & 31;
122 rs = ri->ri_stride;
123
124 bg = ri->ri_devcmap[(attr >> 16) & 0xf];
125 fg = ri->ri_devcmap[(attr >> 24) & 0xf];
126
127 /* If fg and bg match this becomes a space character */
128 if (fg == bg || uc == ' ') {
129 uc = (u_int)-1;
130 fr = 0; /* shutup gcc */
131 fs = 0; /* shutup gcc */
132 } else {
133 uc -= ri->ri_font->firstchar;
134 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
135 fs = ri->ri_font->stride;
136 }
137
138 /* Single word, one mask */
139 if ((col + width) <= 32) {
140 rmask = rasops_pmask[col][width];
141 lmask = ~rmask;
142
143 if (uc == (u_int)-1) {
144 bg &= rmask;
145
146 while (height--) {
147 *rp = (*rp & lmask) | bg;
148 DELTA(rp, rs, int32_t *);
149 }
150 } else {
151 while (height--) {
152 /* get bits, mask */
153 /* compose sl */
154 /* mask sl */
155 /* put word */
156 }
157 }
158
159 /* Do underline */
160 if (attr & WSATTR_UNDERLINE) {
161 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
162 *rp = (*rp & lmask) | (fg & rmask);
163 }
164 } else {
165 lmask = ~rasops_lmask[col];
166 rmask = ~rasops_rmask[(col + width) & 31];
167
168 if (uc == (u_int)-1) {
169 bg = bg & ~lmask;
170 width = bg & ~rmask;
171
172 while (height--) {
173 rp[0] = (rp[0] & lmask) | bg;
174 rp[1] = (rp[1] & rmask) | width;
175 DELTA(rp, rs, int32_t *);
176 }
177 } else {
178 width = 32 - col;
179
180 /* NOT fontbits if bg is white */
181 while (height--) {
182 fb = ~(fr[3] | (fr[2] << 8) |
183 (fr[1] << 16) | (fr[0] << 24));
184
185 rp[0] = (rp[0] & lmask)
186 | MBE((u_int)fb >> col);
187
188 rp[1] = (rp[1] & rmask)
189 | (MBE((u_int)fb << width) & ~rmask);
190
191 fr += fs;
192 DELTA(rp, rs, int32_t *);
193 }
194 }
195
196 /* Do underline */
197 if (attr & WSATTR_UNDERLINE) {
198 DELTA(rp, -(ri->ri_stride << 1), int32_t *);
199 rp[0] = (rp[0] & lmask) | (fg & ~lmask);
200 rp[1] = (rp[1] & rmask) | (fg & ~rmask);
201 }
202 }
203
204 return 0;
205 }
206 #endif
207
208 /*
209 * Put a single character. This is the generic version.
210 */
211 int
rasops4_putchar(void * cookie,int row,int col,u_int uc,uint32_t attr)212 rasops4_putchar(void *cookie, int row, int col, u_int uc, uint32_t attr)
213 {
214
215 /* XXX punt */
216 return (EAGAIN);
217 }
218
219 #ifndef RASOPS_SMALL
220 /*
221 * Recompute the blitting stamp.
222 */
223 void
rasops4_makestamp(struct rasops_info * ri,uint32_t attr)224 rasops4_makestamp(struct rasops_info *ri, uint32_t attr)
225 {
226 int i, fg, bg;
227
228 fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xf;
229 bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xf;
230 stamp_attr = attr;
231
232 for (i = 0; i < 16; i++) {
233 #if BYTE_ORDER == LITTLE_ENDIAN
234 stamp[i] = (i & 1 ? fg : bg) << 8;
235 stamp[i] |= (i & 2 ? fg : bg) << 12;
236 stamp[i] |= (i & 4 ? fg : bg) << 0;
237 stamp[i] |= (i & 8 ? fg : bg) << 4;
238 #else
239 stamp[i] = (i & 1 ? fg : bg) << 0;
240 stamp[i] |= (i & 2 ? fg : bg) << 4;
241 stamp[i] |= (i & 4 ? fg : bg) << 8;
242 stamp[i] |= (i & 8 ? fg : bg) << 12;
243 #endif
244 }
245 }
246
247 /*
248 * Put a single character. This is for 8-pixel wide fonts.
249 */
250 int
rasops4_putchar8(void * cookie,int row,int col,u_int uc,uint32_t attr)251 rasops4_putchar8(void *cookie, int row, int col, u_int uc, uint32_t attr)
252 {
253 struct rasops_info *ri;
254 int height, fs, rs;
255 u_char *fr;
256 u_int16_t *rp;
257
258 /* Can't risk remaking the stamp if it's already in use */
259 if (stamp_mutex++) {
260 stamp_mutex--;
261 return rasops4_putchar(cookie, row, col, uc, attr);
262 }
263
264 ri = (struct rasops_info *)cookie;
265
266 #ifdef RASOPS_CLIPPING
267 /* Catches 'row < 0' case too */
268 if ((unsigned)row >= (unsigned)ri->ri_rows) {
269 stamp_mutex--;
270 return 0;
271 }
272
273 if ((unsigned)col >= (unsigned)ri->ri_cols) {
274 stamp_mutex--;
275 return 0;
276 }
277 #endif
278
279 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
280 height = ri->ri_font->fontheight;
281 rs = ri->ri_stride / sizeof(*rp);
282
283 /* Recompute stamp? */
284 if (attr != stamp_attr)
285 rasops4_makestamp(ri, attr);
286
287 if (uc == ' ') {
288 u_int16_t c = stamp[0];
289 while (height--) {
290 rp[0] = c;
291 rp[1] = c;
292 rp += rs;
293 }
294 } else {
295 uc -= ri->ri_font->firstchar;
296 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
297 fs = ri->ri_font->stride;
298
299 while (height--) {
300 rp[0] = stamp[(*fr >> 4) & 0xf];
301 rp[1] = stamp[*fr & 0xf];
302 fr += fs;
303 rp += rs;
304 }
305 }
306
307 /* Do underline */
308 if ((attr & WSATTR_UNDERLINE) != 0) {
309 rp -= (rs << 1);
310 rp[0] = stamp[15];
311 rp[1] = stamp[15];
312 }
313
314 stamp_mutex--;
315
316 return 0;
317 }
318
319 /*
320 * Put a single character. This is for 12-pixel wide fonts.
321 */
322 int
rasops4_putchar12(void * cookie,int row,int col,u_int uc,uint32_t attr)323 rasops4_putchar12(void *cookie, int row, int col, u_int uc, uint32_t attr)
324 {
325 struct rasops_info *ri;
326 int height, fs, rs;
327 u_char *fr;
328 u_int16_t *rp;
329
330 /* Can't risk remaking the stamp if it's already in use */
331 if (stamp_mutex++) {
332 stamp_mutex--;
333 return rasops4_putchar(cookie, row, col, uc, attr);
334 }
335
336 ri = (struct rasops_info *)cookie;
337
338 #ifdef RASOPS_CLIPPING
339 /* Catches 'row < 0' case too */
340 if ((unsigned)row >= (unsigned)ri->ri_rows) {
341 stamp_mutex--;
342 return 0;
343 }
344
345 if ((unsigned)col >= (unsigned)ri->ri_cols) {
346 stamp_mutex--;
347 return 0;
348 }
349 #endif
350
351 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
352 height = ri->ri_font->fontheight;
353 rs = ri->ri_stride / sizeof(*rp);
354
355 /* Recompute stamp? */
356 if (attr != stamp_attr)
357 rasops4_makestamp(ri, attr);
358
359 if (uc == ' ') {
360 u_int16_t c = stamp[0];
361 while (height--) {
362 rp[0] = c;
363 rp[1] = c;
364 rp[2] = c;
365 rp += rs;
366 }
367 } else {
368 uc -= ri->ri_font->firstchar;
369 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
370 fs = ri->ri_font->stride;
371
372 while (height--) {
373 rp[0] = stamp[(fr[0] >> 4) & 0xf];
374 rp[1] = stamp[fr[0] & 0xf];
375 rp[2] = stamp[(fr[1] >> 4) & 0xf];
376 fr += fs;
377 rp += rs;
378 }
379 }
380
381 /* Do underline */
382 if ((attr & WSATTR_UNDERLINE) != 0) {
383 rp -= (rs << 1);
384 rp[0] = stamp[15];
385 rp[1] = stamp[15];
386 rp[2] = stamp[15];
387 }
388
389 stamp_mutex--;
390
391 return 0;
392 }
393
394 /*
395 * Put a single character. This is for 16-pixel wide fonts.
396 */
397 int
rasops4_putchar16(void * cookie,int row,int col,u_int uc,uint32_t attr)398 rasops4_putchar16(void *cookie, int row, int col, u_int uc, uint32_t attr)
399 {
400 struct rasops_info *ri;
401 int height, fs, rs;
402 u_char *fr;
403 u_int16_t *rp;
404
405 /* Can't risk remaking the stamp if it's already in use */
406 if (stamp_mutex++) {
407 stamp_mutex--;
408 return rasops4_putchar(cookie, row, col, uc, attr);
409 }
410
411 ri = (struct rasops_info *)cookie;
412
413 #ifdef RASOPS_CLIPPING
414 /* Catches 'row < 0' case too */
415 if ((unsigned)row >= (unsigned)ri->ri_rows) {
416 stamp_mutex--;
417 return 0;
418 }
419
420 if ((unsigned)col >= (unsigned)ri->ri_cols) {
421 stamp_mutex--;
422 return 0;
423 }
424 #endif
425
426 rp = (u_int16_t *)(ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale);
427 height = ri->ri_font->fontheight;
428 rs = ri->ri_stride / sizeof(*rp);
429
430 /* Recompute stamp? */
431 if (attr != stamp_attr)
432 rasops4_makestamp(ri, attr);
433
434 if (uc == ' ') {
435 u_int16_t c = stamp[0];
436 while (height--) {
437 rp[0] = c;
438 rp[1] = c;
439 rp[2] = c;
440 rp[3] = c;
441 rp += rs;
442 }
443 } else {
444 uc -= ri->ri_font->firstchar;
445 fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
446 fs = ri->ri_font->stride;
447
448 while (height--) {
449 rp[0] = stamp[(fr[0] >> 4) & 0xf];
450 rp[1] = stamp[fr[0] & 0xf];
451 rp[2] = stamp[(fr[1] >> 4) & 0xf];
452 rp[3] = stamp[fr[1] & 0xf];
453 fr += fs;
454 rp += rs;
455 }
456 }
457
458 /* Do underline */
459 if ((attr & WSATTR_UNDERLINE) != 0) {
460 rp -= (rs << 1);
461 rp[0] = stamp[15];
462 rp[1] = stamp[15];
463 rp[2] = stamp[15];
464 rp[3] = stamp[15];
465 }
466
467 stamp_mutex--;
468
469 return 0;
470 }
471 #endif /* !RASOPS_SMALL */
472
473 /*
474 * Grab routines common to depths where (bpp < 8)
475 */
476 #define NAME(ident) rasops4_##ident
477 #define PIXEL_SHIFT 2
478
479 #include <dev/rasops/rasops_bitops.h>
480