1 | /* $NetBSD: rasops15.c,v 1.20 2012/04/17 12:06:25 macallan 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 1.20 2012/04/17 12:06:25 macallan 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 | |
45 | static void rasops15_putchar(void *, int, int, u_int, long attr); |
46 | #ifndef RASOPS_SMALL |
47 | static void rasops15_putchar8(void *, int, int, u_int, long attr); |
48 | static void rasops15_putchar12(void *, int, int, u_int, long attr); |
49 | static void rasops15_putchar16(void *, int, int, u_int, long attr); |
50 | static void rasops15_makestamp(struct rasops_info *, long); |
51 | #endif |
52 | |
53 | #ifndef RASOPS_SMALL |
54 | /* |
55 | * (2x2)x1 stamp for optimized character blitting |
56 | */ |
57 | static int32_t stamp[32]; |
58 | static long stamp_attr; |
59 | static int stamp_mutex; /* XXX see note in readme */ |
60 | |
61 | /* |
62 | * XXX this confuses the hell out of gcc2 (not egcs) which always insists |
63 | * that the shift count is negative. |
64 | * |
65 | * offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK |
66 | * destination int32_t[0] = STAMP_READ(offset) |
67 | * destination int32_t[1] = STAMP_READ(offset + 4) |
68 | */ |
69 | #define STAMP_SHIFT(fb,n) ((n*4-3) >= 0 ? (fb)>>(n*4-3):(fb)<<-(n*4-3)) |
70 | #define STAMP_MASK (15 << 3) |
71 | #define STAMP_READ(o) (*(int32_t *)((char *)stamp + (o))) |
72 | #endif |
73 | |
74 | /* |
75 | * Initialize rasops_info struct for this colordepth. |
76 | */ |
77 | void |
78 | rasops15_init(struct rasops_info *ri) |
79 | { |
80 | |
81 | switch (ri->ri_font->fontwidth) { |
82 | #ifndef RASOPS_SMALL |
83 | case 8: |
84 | ri->ri_ops.putchar = rasops15_putchar8; |
85 | break; |
86 | |
87 | case 12: |
88 | ri->ri_ops.putchar = rasops15_putchar12; |
89 | break; |
90 | |
91 | case 16: |
92 | ri->ri_ops.putchar = rasops15_putchar16; |
93 | break; |
94 | #endif /* !RASOPS_SMALL */ |
95 | default: |
96 | ri->ri_ops.putchar = rasops15_putchar; |
97 | break; |
98 | } |
99 | |
100 | if (ri->ri_rnum == 0) { |
101 | ri->ri_rnum = 5; |
102 | ri->ri_rpos = 10 + (ri->ri_depth == 16); |
103 | ri->ri_gnum = 5 + (ri->ri_depth == 16); |
104 | ri->ri_gpos = 5; |
105 | ri->ri_bnum = 5; |
106 | ri->ri_bpos = 0; |
107 | } |
108 | } |
109 | |
110 | /* |
111 | * Paint a single character. |
112 | */ |
113 | static void |
114 | rasops15_putchar(void *cookie, int row, int col, u_int uc, long attr) |
115 | { |
116 | int fb, width, height, cnt, clr[2]; |
117 | struct rasops_info *ri = (struct rasops_info *)cookie; |
118 | struct wsdisplay_font *font = PICK_FONT(ri, uc); |
119 | u_char *dp, *rp, *hp, *hrp, *fr; |
120 | |
121 | hp = hrp = NULL; |
122 | |
123 | #ifdef RASOPS_CLIPPING |
124 | /* Catches 'row < 0' case too */ |
125 | if ((unsigned)row >= (unsigned)ri->ri_rows) |
126 | return; |
127 | |
128 | if ((unsigned)col >= (unsigned)ri->ri_cols) |
129 | return; |
130 | #endif |
131 | |
132 | rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; |
133 | if (ri->ri_hwbits) |
134 | hrp = ri->ri_hwbits + row * ri->ri_yscale + |
135 | col * ri->ri_xscale; |
136 | height = font->fontheight; |
137 | width = font->fontwidth; |
138 | |
139 | clr[1] = ri->ri_devcmap[((u_int)attr >> 24) & 0xf]; |
140 | clr[0] = ri->ri_devcmap[((u_int)attr >> 16) & 0xf]; |
141 | |
142 | if (uc == ' ') { |
143 | int16_t c = (int16_t)clr[0]; |
144 | while (height--) { |
145 | dp = rp; |
146 | rp += ri->ri_stride; |
147 | if (ri->ri_hwbits) { |
148 | hp = hrp; |
149 | hrp += ri->ri_stride; |
150 | } |
151 | |
152 | for (cnt = width; cnt; cnt--) { |
153 | *(int16_t *)dp = c; |
154 | dp += 2; |
155 | if (ri->ri_hwbits) { |
156 | *(int16_t *)hp = c; |
157 | hp += 2; |
158 | } |
159 | } |
160 | } |
161 | } else { |
162 | uc -= font->firstchar; |
163 | fr = (u_char *)font->data + uc * ri->ri_fontscale; |
164 | |
165 | while (height--) { |
166 | dp = rp; |
167 | fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24); |
168 | fr += font->stride; |
169 | rp += ri->ri_stride; |
170 | if (ri->ri_hwbits) { |
171 | hp = hrp; |
172 | hrp += ri->ri_stride; |
173 | } |
174 | |
175 | for (cnt = width; cnt; cnt--) { |
176 | *(int16_t *)dp = (int16_t)clr[(fb >> 31) & 1]; |
177 | if (ri->ri_hwbits) |
178 | *(int16_t *)hp = |
179 | (int16_t)clr[(fb >> 31) & 1]; |
180 | fb <<= 1; |
181 | dp += 2; |
182 | if (ri->ri_hwbits) |
183 | hp += 2; |
184 | } |
185 | } |
186 | } |
187 | |
188 | /* Do underline */ |
189 | if ((attr & 1) != 0) { |
190 | int16_t c = (int16_t)clr[1]; |
191 | rp -= ri->ri_stride << 1; |
192 | if (ri->ri_hwbits) |
193 | hrp -= ri->ri_stride << 1; |
194 | |
195 | while (width--) { |
196 | *(int16_t *)rp = c; |
197 | rp += 2; |
198 | if (ri->ri_hwbits) { |
199 | *(int16_t *)hrp = c; |
200 | hrp += 2; |
201 | } |
202 | } |
203 | } |
204 | } |
205 | |
206 | #ifndef RASOPS_SMALL |
207 | /* |
208 | * Recompute the (2x2)x1 blitting stamp. |
209 | */ |
210 | static void |
211 | rasops15_makestamp(struct rasops_info *ri, long attr) |
212 | { |
213 | int32_t fg, bg; |
214 | int i; |
215 | |
216 | fg = ri->ri_devcmap[((u_int)attr >> 24) & 0xf] & 0xffff; |
217 | bg = ri->ri_devcmap[((u_int)attr >> 16) & 0xf] & 0xffff; |
218 | stamp_attr = attr; |
219 | |
220 | for (i = 0; i < 32; i += 2) { |
221 | #if BYTE_ORDER == LITTLE_ENDIAN |
222 | stamp[i] = (i & 16 ? fg : bg); |
223 | stamp[i] |= ((i & 8 ? fg : bg) << 16); |
224 | stamp[i + 1] = (i & 4 ? fg : bg); |
225 | stamp[i + 1] |= ((i & 2 ? fg : bg) << 16); |
226 | #else |
227 | stamp[i] = (i & 2 ? fg : bg); |
228 | stamp[i] |= ((i & 4 ? fg : bg) << 16); |
229 | stamp[i + 1] = (i & 8 ? fg : bg); |
230 | stamp[i + 1] |= ((i & 16 ? fg : bg) << 16); |
231 | #endif |
232 | } |
233 | } |
234 | |
235 | /* |
236 | * Paint a single character. This is for 8-pixel wide fonts. |
237 | */ |
238 | static void |
239 | rasops15_putchar8(void *cookie, int row, int col, u_int uc, long attr) |
240 | { |
241 | struct rasops_info *ri = (struct rasops_info *)cookie; |
242 | struct wsdisplay_font *font = PICK_FONT(ri, uc); |
243 | int height, so, fs; |
244 | int32_t *rp, *hrp; |
245 | u_char *fr; |
246 | |
247 | /* Can't risk remaking the stamp if it's already in use */ |
248 | if (stamp_mutex++) { |
249 | stamp_mutex--; |
250 | rasops15_putchar(cookie, row, col, uc, attr); |
251 | return; |
252 | } |
253 | |
254 | hrp = NULL; |
255 | |
256 | #ifdef RASOPS_CLIPPING |
257 | if ((unsigned)row >= (unsigned)ri->ri_rows) { |
258 | stamp_mutex--; |
259 | return; |
260 | } |
261 | |
262 | if ((unsigned)col >= (unsigned)ri->ri_cols) { |
263 | stamp_mutex--; |
264 | return; |
265 | } |
266 | #endif |
267 | |
268 | /* Recompute stamp? */ |
269 | if (attr != stamp_attr) |
270 | rasops15_makestamp(ri, attr); |
271 | |
272 | rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); |
273 | if (ri->ri_hwbits) |
274 | hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale + |
275 | col*ri->ri_xscale); |
276 | height = font->fontheight; |
277 | |
278 | if (uc == (u_int)-1) { |
279 | int32_t c = stamp[0]; |
280 | while (height--) { |
281 | rp[0] = rp[1] = rp[2] = rp[3] = c; |
282 | DELTA(rp, ri->ri_stride, int32_t *); |
283 | if (ri->ri_hwbits) { |
284 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = c; |
285 | DELTA(hrp, ri->ri_stride, int32_t *); |
286 | } |
287 | } |
288 | } else { |
289 | uc -= font->firstchar; |
290 | fr = (u_char *)font->data + uc*ri->ri_fontscale; |
291 | fs = font->stride; |
292 | |
293 | while (height--) { |
294 | so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK; |
295 | rp[0] = STAMP_READ(so); |
296 | rp[1] = STAMP_READ(so + 4); |
297 | if (ri->ri_hwbits) { |
298 | hrp[0] = STAMP_READ(so); |
299 | hrp[1] = STAMP_READ(so + 4); |
300 | } |
301 | |
302 | so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK; |
303 | rp[2] = STAMP_READ(so); |
304 | rp[3] = STAMP_READ(so + 4); |
305 | if (ri->ri_hwbits) { |
306 | hrp[2] = STAMP_READ(so); |
307 | hrp[3] = STAMP_READ(so + 4); |
308 | } |
309 | |
310 | fr += fs; |
311 | DELTA(rp, ri->ri_stride, int32_t *); |
312 | if (ri->ri_hwbits) |
313 | DELTA(hrp, ri->ri_stride, int32_t *); |
314 | } |
315 | } |
316 | |
317 | /* Do underline */ |
318 | if ((attr & 1) != 0) { |
319 | int32_t c = STAMP_READ(28); |
320 | |
321 | DELTA(rp, -(ri->ri_stride << 1), int32_t *); |
322 | rp[0] = rp[1] = rp[2] = rp[3] = c; |
323 | if (ri->ri_hwbits) { |
324 | DELTA(hrp, -(ri->ri_stride << 1), int32_t *); |
325 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = c; |
326 | } |
327 | } |
328 | |
329 | stamp_mutex--; |
330 | } |
331 | |
332 | /* |
333 | * Paint a single character. This is for 12-pixel wide fonts. |
334 | */ |
335 | static void |
336 | rasops15_putchar12(void *cookie, int row, int col, u_int uc, long attr) |
337 | { |
338 | struct rasops_info *ri = (struct rasops_info *)cookie; |
339 | struct wsdisplay_font *font = PICK_FONT(ri, uc); |
340 | int height, so, fs; |
341 | int32_t *rp, *hrp; |
342 | u_char *fr; |
343 | |
344 | /* Can't risk remaking the stamp if it's already in use */ |
345 | if (stamp_mutex++) { |
346 | stamp_mutex--; |
347 | rasops15_putchar(cookie, row, col, uc, attr); |
348 | return; |
349 | } |
350 | |
351 | hrp = NULL; |
352 | |
353 | #ifdef RASOPS_CLIPPING |
354 | if ((unsigned)row >= (unsigned)ri->ri_rows) { |
355 | stamp_mutex--; |
356 | return; |
357 | } |
358 | |
359 | if ((unsigned)col >= (unsigned)ri->ri_cols) { |
360 | stamp_mutex--; |
361 | return; |
362 | } |
363 | #endif |
364 | |
365 | /* Recompute stamp? */ |
366 | if (attr != stamp_attr) |
367 | rasops15_makestamp(ri, attr); |
368 | |
369 | rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); |
370 | if (ri->ri_hwbits) |
371 | hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale + |
372 | col*ri->ri_xscale); |
373 | height = font->fontheight; |
374 | |
375 | if (uc == (u_int)-1) { |
376 | int32_t c = stamp[0]; |
377 | while (height--) { |
378 | rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c; |
379 | DELTA(rp, ri->ri_stride, int32_t *); |
380 | if (ri->ri_hwbits) { |
381 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = hrp[4] = |
382 | hrp[5] = c; |
383 | DELTA(hrp, ri->ri_stride, int32_t *); |
384 | } |
385 | } |
386 | } else { |
387 | uc -= font->firstchar; |
388 | fr = (u_char *)font->data + uc*ri->ri_fontscale; |
389 | fs = font->stride; |
390 | |
391 | while (height--) { |
392 | so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK; |
393 | rp[0] = STAMP_READ(so); |
394 | rp[1] = STAMP_READ(so + 4); |
395 | if (ri->ri_hwbits) { |
396 | hrp[0] = STAMP_READ(so); |
397 | hrp[1] = STAMP_READ(so + 4); |
398 | } |
399 | |
400 | so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK; |
401 | rp[2] = STAMP_READ(so); |
402 | rp[3] = STAMP_READ(so + 4); |
403 | if (ri->ri_hwbits) { |
404 | hrp[2] = STAMP_READ(so); |
405 | hrp[3] = STAMP_READ(so + 4); |
406 | } |
407 | |
408 | so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK; |
409 | rp[4] = STAMP_READ(so); |
410 | rp[5] = STAMP_READ(so + 4); |
411 | if (ri->ri_hwbits) { |
412 | hrp[4] = STAMP_READ(so); |
413 | hrp[5] = STAMP_READ(so + 4); |
414 | } |
415 | |
416 | fr += fs; |
417 | DELTA(rp, ri->ri_stride, int32_t *); |
418 | if (ri->ri_hwbits) |
419 | DELTA(hrp, ri->ri_stride, int32_t *); |
420 | } |
421 | } |
422 | |
423 | /* Do underline */ |
424 | if (attr & 1) { |
425 | int32_t c = STAMP_READ(28); |
426 | |
427 | DELTA(rp, -(ri->ri_stride << 1), int32_t *); |
428 | rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c; |
429 | if (ri->ri_hwbits) { |
430 | DELTA(hrp, -(ri->ri_stride << 1), int32_t *); |
431 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = hrp[4] = hrp[5] = c; |
432 | } |
433 | } |
434 | |
435 | stamp_mutex--; |
436 | } |
437 | |
438 | /* |
439 | * Paint a single character. This is for 16-pixel wide fonts. |
440 | */ |
441 | static void |
442 | rasops15_putchar16(void *cookie, int row, int col, u_int uc, long attr) |
443 | { |
444 | struct rasops_info *ri = (struct rasops_info *)cookie; |
445 | struct wsdisplay_font *font = PICK_FONT(ri, uc); |
446 | int height, so, fs; |
447 | int32_t *rp, *hrp; |
448 | u_char *fr; |
449 | |
450 | /* Can't risk remaking the stamp if it's already in use */ |
451 | if (stamp_mutex++) { |
452 | stamp_mutex--; |
453 | rasops15_putchar(cookie, row, col, uc, attr); |
454 | return; |
455 | } |
456 | |
457 | hrp = NULL; |
458 | |
459 | #ifdef RASOPS_CLIPPING |
460 | if ((unsigned)row >= (unsigned)ri->ri_rows) { |
461 | stamp_mutex--; |
462 | return; |
463 | } |
464 | |
465 | if ((unsigned)col >= (unsigned)ri->ri_cols) { |
466 | stamp_mutex--; |
467 | return; |
468 | } |
469 | #endif |
470 | |
471 | /* Recompute stamp? */ |
472 | if (attr != stamp_attr) |
473 | rasops15_makestamp(ri, attr); |
474 | |
475 | rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale); |
476 | if (ri->ri_hwbits) |
477 | hrp = (int32_t *)(ri->ri_hwbits + row*ri->ri_yscale + |
478 | col*ri->ri_xscale); |
479 | height = font->fontheight; |
480 | |
481 | if (uc == (u_int)-1) { |
482 | int32_t c = stamp[0]; |
483 | while (height--) { |
484 | rp[0] = rp[1] = rp[2] = rp[3] = |
485 | rp[4] = rp[5] = rp[6] = rp[7] = c; |
486 | DELTA(rp, ri->ri_stride, int32_t *); |
487 | if (ri->ri_hwbits) { |
488 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = |
489 | hrp[4] = hrp[5] = hrp[6] = hrp[7] = c; |
490 | DELTA(hrp, ri->ri_stride, int32_t *); |
491 | } |
492 | } |
493 | } else { |
494 | uc -= font->firstchar; |
495 | fr = (u_char *)font->data + uc*ri->ri_fontscale; |
496 | fs = font->stride; |
497 | |
498 | while (height--) { |
499 | so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK; |
500 | rp[0] = STAMP_READ(so); |
501 | rp[1] = STAMP_READ(so + 4); |
502 | if (ri->ri_hwbits) { |
503 | hrp[0] = STAMP_READ(so); |
504 | hrp[1] = STAMP_READ(so + 4); |
505 | } |
506 | |
507 | so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK; |
508 | rp[2] = STAMP_READ(so); |
509 | rp[3] = STAMP_READ(so + 4); |
510 | if (ri->ri_hwbits) { |
511 | hrp[2] = STAMP_READ(so); |
512 | hrp[3] = STAMP_READ(so + 4); |
513 | } |
514 | |
515 | so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK; |
516 | rp[4] = STAMP_READ(so); |
517 | rp[5] = STAMP_READ(so + 4); |
518 | if (ri->ri_hwbits) { |
519 | hrp[4] = STAMP_READ(so); |
520 | hrp[5] = STAMP_READ(so + 4); |
521 | } |
522 | |
523 | so = STAMP_SHIFT(fr[1], 0) & STAMP_MASK; |
524 | rp[6] = STAMP_READ(so); |
525 | rp[7] = STAMP_READ(so + 4); |
526 | if (ri->ri_hwbits) { |
527 | hrp[6] = STAMP_READ(so); |
528 | hrp[7] = STAMP_READ(so + 4); |
529 | } |
530 | |
531 | DELTA(rp, ri->ri_stride, int32_t *); |
532 | if (ri->ri_hwbits) |
533 | DELTA(hrp, ri->ri_stride, int32_t *); |
534 | fr += fs; |
535 | } |
536 | } |
537 | |
538 | /* Do underline */ |
539 | if (attr & 1) { |
540 | int32_t c = STAMP_READ(28); |
541 | |
542 | DELTA(rp, -(ri->ri_stride << 1), int32_t *); |
543 | rp[0] = rp[1] = rp[2] = rp[3] = |
544 | rp[4] = rp[5] = rp[6] = rp[7] = c; |
545 | if (ri->ri_hwbits) { |
546 | DELTA(hrp, -(ri->ri_stride << 1), int32_t *); |
547 | hrp[0] = hrp[1] = hrp[2] = hrp[3] = |
548 | hrp[4] = hrp[5] = hrp[6] = hrp[7] = c; |
549 | } |
550 | } |
551 | |
552 | stamp_mutex--; |
553 | } |
554 | #endif /* !RASOPS_SMALL */ |
555 | |