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[mesa.git] / src / mesa / main / format_pack.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (c) 2011 VMware, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24
25 /**
26 * Color, depth, stencil packing functions.
27 * Used to pack basic color, depth and stencil formats to specific
28 * hardware formats.
29 *
30 * There are both per-pixel and per-row packing functions:
31 * - The former will be used by swrast to write values to the color, depth,
32 * stencil buffers when drawing points, lines and masked spans.
33 * - The later will be used for image-oriented functions like glDrawPixels,
34 * glAccum, and glTexImage.
35 */
36
37
38 #include "colormac.h"
39 #include "format_pack.h"
40 #include "macros.h"
41 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
42 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
43
44
45 typedef void (*pack_ubyte_rgba_row_func)(GLuint n,
46 const GLubyte src[][4], void *dst);
47
48 typedef void (*pack_float_rgba_row_func)(GLuint n,
49 const GLfloat src[][4], void *dst);
50
51
52
53 static inline GLfloat
54 linear_to_srgb(GLfloat cl)
55 {
56 if (cl < 0.0f)
57 return 0.0f;
58 else if (cl < 0.0031308f)
59 return 12.92f * cl;
60 else if (cl < 1.0f)
61 return 1.055f * powf(cl, 0.41666f) - 0.055f;
62 else
63 return 1.0f;
64 }
65
66
67 static inline GLubyte
68 linear_float_to_srgb_ubyte(GLfloat cl)
69 {
70 GLubyte res = FLOAT_TO_UBYTE(linear_to_srgb(cl));
71 return res;
72 }
73
74
75 static inline GLubyte
76 linear_ubyte_to_srgb_ubyte(GLubyte cl)
77 {
78 GLubyte res = FLOAT_TO_UBYTE(linear_to_srgb(cl / 255.0f));
79 return res;
80 }
81
82
83
84
85 /*
86 * MESA_FORMAT_RGBA8888
87 */
88
89 static void
90 pack_ubyte_RGBA8888(const GLubyte src[4], void *dst)
91 {
92 GLuint *d = ((GLuint *) dst);
93 *d = PACK_COLOR_8888(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
94 }
95
96 static void
97 pack_float_RGBA8888(const GLfloat src[4], void *dst)
98 {
99 GLubyte v[4];
100 _mesa_unclamped_float_rgba_to_ubyte(v, src);
101 pack_ubyte_RGBA8888(v, dst);
102 }
103
104 static void
105 pack_row_ubyte_RGBA8888(GLuint n, const GLubyte src[][4], void *dst)
106 {
107 GLuint *d = ((GLuint *) dst);
108 GLuint i;
109 for (i = 0; i < n; i++) {
110 d[i] = PACK_COLOR_8888(src[i][RCOMP], src[i][GCOMP],
111 src[i][BCOMP], src[i][ACOMP]);
112 }
113 }
114
115 static void
116 pack_row_float_RGBA8888(GLuint n, const GLfloat src[][4], void *dst)
117 {
118 GLuint *d = ((GLuint *) dst);
119 GLuint i;
120 for (i = 0; i < n; i++) {
121 GLubyte v[4];
122 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
123 pack_ubyte_RGBA8888(v, d + i);
124 }
125 }
126
127
128
129 /*
130 * MESA_FORMAT_RGBA8888_REV
131 */
132
133 static void
134 pack_ubyte_RGBA8888_REV(const GLubyte src[4], void *dst)
135 {
136 GLuint *d = ((GLuint *) dst);
137 *d = PACK_COLOR_8888(src[ACOMP], src[BCOMP], src[GCOMP], src[RCOMP]);
138 }
139
140 static void
141 pack_float_RGBA8888_REV(const GLfloat src[4], void *dst)
142 {
143 GLubyte v[4];
144 _mesa_unclamped_float_rgba_to_ubyte(v, src);
145 pack_ubyte_RGBA8888_REV(v, dst);
146 }
147
148 static void
149 pack_row_ubyte_RGBA8888_REV(GLuint n, const GLubyte src[][4], void *dst)
150 {
151 GLuint *d = ((GLuint *) dst);
152 GLuint i;
153 for (i = 0; i < n; i++) {
154 d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][BCOMP],
155 src[i][GCOMP], src[i][RCOMP]);
156 }
157 }
158
159 static void
160 pack_row_float_RGBA8888_REV(GLuint n, const GLfloat src[][4], void *dst)
161 {
162 GLuint *d = ((GLuint *) dst);
163 GLuint i;
164 for (i = 0; i < n; i++) {
165 GLubyte v[4];
166 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
167 pack_ubyte_RGBA8888_REV(v, d + i);
168 }
169 }
170
171
172 /*
173 * MESA_FORMAT_ARGB8888
174 */
175
176 static void
177 pack_ubyte_ARGB8888(const GLubyte src[4], void *dst)
178 {
179 GLuint *d = ((GLuint *) dst);
180 *d = PACK_COLOR_8888(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
181 }
182
183 static void
184 pack_float_ARGB8888(const GLfloat src[4], void *dst)
185 {
186 GLubyte v[4];
187 _mesa_unclamped_float_rgba_to_ubyte(v, src);
188 pack_ubyte_ARGB8888(v, dst);
189 }
190
191 static void
192 pack_row_ubyte_ARGB8888(GLuint n, const GLubyte src[][4], void *dst)
193 {
194 GLuint *d = ((GLuint *) dst);
195 GLuint i;
196 for (i = 0; i < n; i++) {
197 d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][RCOMP],
198 src[i][GCOMP], src[i][BCOMP]);
199 }
200 }
201
202 static void
203 pack_row_float_ARGB8888(GLuint n, const GLfloat src[][4], void *dst)
204 {
205 GLuint *d = ((GLuint *) dst);
206 GLuint i;
207 for (i = 0; i < n; i++) {
208 GLubyte v[4];
209 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
210 pack_ubyte_ARGB8888(v, d + i);
211 }
212 }
213
214
215 /*
216 * MESA_FORMAT_ARGB8888_REV
217 */
218
219 static void
220 pack_ubyte_ARGB8888_REV(const GLubyte src[4], void *dst)
221 {
222 GLuint *d = ((GLuint *) dst);
223 *d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], src[ACOMP]);
224 }
225
226 static void
227 pack_float_ARGB8888_REV(const GLfloat src[4], void *dst)
228 {
229 GLubyte v[4];
230 _mesa_unclamped_float_rgba_to_ubyte(v, src);
231 pack_ubyte_ARGB8888_REV(v, dst);
232 }
233
234 static void
235 pack_row_ubyte_ARGB8888_REV(GLuint n, const GLubyte src[][4], void *dst)
236 {
237 GLuint *d = ((GLuint *) dst);
238 GLuint i;
239 for (i = 0; i < n; i++) {
240 d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP],
241 src[i][RCOMP], src[i][ACOMP]);
242 }
243 }
244
245 static void
246 pack_row_float_ARGB8888_REV(GLuint n, const GLfloat src[][4], void *dst)
247 {
248 GLuint *d = ((GLuint *) dst);
249 GLuint i;
250 for (i = 0; i < n; i++) {
251 GLubyte v[4];
252 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
253 pack_ubyte_ARGB8888_REV(v, d + i);
254 }
255 }
256
257
258 /*
259 * MESA_FORMAT_XRGB8888
260 */
261
262 static void
263 pack_ubyte_XRGB8888(const GLubyte src[4], void *dst)
264 {
265 GLuint *d = ((GLuint *) dst);
266 *d = PACK_COLOR_8888(0x0, src[RCOMP], src[GCOMP], src[BCOMP]);
267 }
268
269 static void
270 pack_float_XRGB8888(const GLfloat src[4], void *dst)
271 {
272 GLubyte v[4];
273 _mesa_unclamped_float_rgba_to_ubyte(v, src);
274 pack_ubyte_XRGB8888(v, dst);
275 }
276
277 static void
278 pack_row_ubyte_XRGB8888(GLuint n, const GLubyte src[][4], void *dst)
279 {
280 GLuint *d = ((GLuint *) dst);
281 GLuint i;
282 for (i = 0; i < n; i++) {
283 d[i] = PACK_COLOR_8888(0, src[i][RCOMP], src[i][GCOMP], src[i][BCOMP]);
284 }
285 }
286
287 static void
288 pack_row_float_XRGB8888(GLuint n, const GLfloat src[][4], void *dst)
289 {
290 GLuint *d = ((GLuint *) dst);
291 GLuint i;
292 for (i = 0; i < n; i++) {
293 GLubyte v[4];
294 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
295 pack_ubyte_XRGB8888(v, d + i);
296 }
297 }
298
299
300 /*
301 * MESA_FORMAT_XRGB8888_REV
302 */
303
304 static void
305 pack_ubyte_XRGB8888_REV(const GLubyte src[4], void *dst)
306 {
307 GLuint *d = ((GLuint *) dst);
308 *d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], 0);
309 }
310
311 static void
312 pack_float_XRGB8888_REV(const GLfloat src[4], void *dst)
313 {
314 GLubyte v[4];
315 _mesa_unclamped_float_rgba_to_ubyte(v, src);
316 pack_ubyte_XRGB8888_REV(v, dst);
317 }
318
319 static void
320 pack_row_ubyte_XRGB8888_REV(GLuint n, const GLubyte src[][4], void *dst)
321 {
322 GLuint *d = ((GLuint *) dst);
323 GLuint i;
324 for (i = 0; i < n; i++) {
325 d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP], src[i][RCOMP], 0);
326 }
327 }
328
329 static void
330 pack_row_float_XRGB8888_REV(GLuint n, const GLfloat src[][4], void *dst)
331 {
332 GLuint *d = ((GLuint *) dst);
333 GLuint i;
334 for (i = 0; i < n; i++) {
335 GLubyte v[4];
336 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
337 pack_ubyte_XRGB8888_REV(v, d + i);
338 }
339 }
340
341
342 /*
343 * MESA_FORMAT_RGB888
344 */
345
346 static void
347 pack_ubyte_RGB888(const GLubyte src[4], void *dst)
348 {
349 GLubyte *d = ((GLubyte *) dst);
350 d[2] = src[RCOMP];
351 d[1] = src[GCOMP];
352 d[0] = src[BCOMP];
353 }
354
355 static void
356 pack_float_RGB888(const GLfloat src[4], void *dst)
357 {
358 GLubyte *d = ((GLubyte *) dst);
359 UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[RCOMP]);
360 UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
361 UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[BCOMP]);
362 }
363
364 static void
365 pack_row_ubyte_RGB888(GLuint n, const GLubyte src[][4], void *dst)
366 {
367 GLubyte *d = ((GLubyte *) dst);
368 GLuint i;
369 for (i = 0; i < n; i++) {
370 d[i*3+2] = src[i][RCOMP];
371 d[i*3+1] = src[i][GCOMP];
372 d[i*3+0] = src[i][BCOMP];
373 }
374 }
375
376 static void
377 pack_row_float_RGB888(GLuint n, const GLfloat src[][4], void *dst)
378 {
379 GLubyte *d = ((GLubyte *) dst);
380 GLuint i;
381 for (i = 0; i < n; i++) {
382 GLubyte v[4];
383 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
384 d[i*3+2] = v[RCOMP];
385 d[i*3+1] = v[GCOMP];
386 d[i*3+0] = v[BCOMP];
387 }
388 }
389
390
391 /*
392 * MESA_FORMAT_BGR888
393 */
394
395 static void
396 pack_ubyte_BGR888(const GLubyte src[4], void *dst)
397 {
398 GLubyte *d = ((GLubyte *) dst);
399 d[2] = src[BCOMP];
400 d[1] = src[GCOMP];
401 d[0] = src[RCOMP];
402 }
403
404 static void
405 pack_float_BGR888(const GLfloat src[4], void *dst)
406 {
407 GLubyte *d = ((GLubyte *) dst);
408 UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[BCOMP]);
409 UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
410 UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
411 }
412
413 static void
414 pack_row_ubyte_BGR888(GLuint n, const GLubyte src[][4], void *dst)
415 {
416 GLubyte *d = ((GLubyte *) dst);
417 GLuint i;
418 for (i = 0; i < n; i++) {
419 d[i*3+2] = src[i][BCOMP];
420 d[i*3+1] = src[i][GCOMP];
421 d[i*3+0] = src[i][RCOMP];
422 }
423 }
424
425 static void
426 pack_row_float_BGR888(GLuint n, const GLfloat src[][4], void *dst)
427 {
428 GLubyte *d = ((GLubyte *) dst);
429 GLuint i;
430 for (i = 0; i < n; i++) {
431 GLubyte v[4];
432 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
433 d[i*3+2] = v[BCOMP];
434 d[i*3+1] = v[GCOMP];
435 d[i*3+0] = v[RCOMP];
436 }
437 }
438
439
440 /*
441 * MESA_FORMAT_RGB565
442 */
443
444 static void
445 pack_ubyte_RGB565(const GLubyte src[4], void *dst)
446 {
447 GLushort *d = ((GLushort *) dst);
448 *d = PACK_COLOR_565(src[RCOMP], src[GCOMP], src[BCOMP]);
449 }
450
451 static void
452 pack_float_RGB565(const GLfloat src[4], void *dst)
453 {
454 GLubyte v[3];
455 UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
456 UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
457 UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
458 pack_ubyte_RGB565(v, dst);
459 }
460
461 static void
462 pack_row_ubyte_RGB565(GLuint n, const GLubyte src[][4], void *dst)
463 {
464 GLushort *d = ((GLushort *) dst);
465 GLuint i;
466 for (i = 0; i < n; i++) {
467 pack_ubyte_RGB565(src[i], d + i);
468 }
469 }
470
471 static void
472 pack_row_float_RGB565(GLuint n, const GLfloat src[][4], void *dst)
473 {
474 GLushort *d = ((GLushort *) dst);
475 GLuint i;
476 for (i = 0; i < n; i++) {
477 GLubyte v[4];
478 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
479 pack_ubyte_RGB565(v, d + i);
480 }
481 }
482
483
484 /*
485 * MESA_FORMAT_RGB565_REV
486 */
487
488 static void
489 pack_ubyte_RGB565_REV(const GLubyte src[4], void *dst)
490 {
491 GLushort *d = ((GLushort *) dst);
492 *d = PACK_COLOR_565_REV(src[RCOMP], src[GCOMP], src[BCOMP]);
493 }
494
495 static void
496 pack_float_RGB565_REV(const GLfloat src[4], void *dst)
497 {
498 GLushort *d = ((GLushort *) dst);
499 GLubyte r, g, b;
500 UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
501 UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
502 UNCLAMPED_FLOAT_TO_UBYTE(b, src[BCOMP]);
503 *d = PACK_COLOR_565_REV(r, g, b);
504 }
505
506 static void
507 pack_row_ubyte_RGB565_REV(GLuint n, const GLubyte src[][4], void *dst)
508 {
509 GLushort *d = ((GLushort *) dst);
510 GLuint i;
511 for (i = 0; i < n; i++) {
512 pack_ubyte_RGB565_REV(src[i], d + i);
513 }
514 }
515
516 static void
517 pack_row_float_RGB565_REV(GLuint n, const GLfloat src[][4], void *dst)
518 {
519 GLushort *d = ((GLushort *) dst);
520 GLuint i;
521 for (i = 0; i < n; i++) {
522 GLubyte v[4];
523 _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
524 pack_ubyte_RGB565_REV(v, d + i);
525 }
526 }
527
528
529 /*
530 * MESA_FORMAT_ARGB4444
531 */
532
533 static void
534 pack_ubyte_ARGB4444(const GLubyte src[4], void *dst)
535 {
536 GLushort *d = ((GLushort *) dst);
537 *d = PACK_COLOR_4444(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
538 }
539
540 static void
541 pack_float_ARGB4444(const GLfloat src[4], void *dst)
542 {
543 GLubyte v[4];
544 _mesa_unclamped_float_rgba_to_ubyte(v, src);
545 pack_ubyte_ARGB4444(v, dst);
546 }
547
548 /* use fallback row packing functions */
549
550
551 /*
552 * MESA_FORMAT_ARGB4444_REV
553 */
554
555 static void
556 pack_ubyte_ARGB4444_REV(const GLubyte src[4], void *dst)
557 {
558 GLushort *d = ((GLushort *) dst);
559 *d = PACK_COLOR_4444(src[GCOMP], src[BCOMP], src[ACOMP], src[RCOMP]);
560 }
561
562 static void
563 pack_float_ARGB4444_REV(const GLfloat src[4], void *dst)
564 {
565 GLubyte v[4];
566 _mesa_unclamped_float_rgba_to_ubyte(v, src);
567 pack_ubyte_ARGB4444_REV(v, dst);
568 }
569
570 /* use fallback row packing functions */
571
572
573 /*
574 * MESA_FORMAT_RGBA5551
575 */
576
577 static void
578 pack_ubyte_RGBA5551(const GLubyte src[4], void *dst)
579 {
580 GLushort *d = ((GLushort *) dst);
581 *d = PACK_COLOR_5551(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
582 }
583
584 static void
585 pack_float_RGBA5551(const GLfloat src[4], void *dst)
586 {
587 GLubyte v[4];
588 _mesa_unclamped_float_rgba_to_ubyte(v, src);
589 pack_ubyte_RGBA5551(v, dst);
590 }
591
592 /* use fallback row packing functions */
593
594
595 /*
596 * MESA_FORMAT_ARGB1555
597 */
598
599 static void
600 pack_ubyte_ARGB1555(const GLubyte src[4], void *dst)
601 {
602 GLushort *d = ((GLushort *) dst);
603 *d = PACK_COLOR_1555(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
604 }
605
606 static void
607 pack_float_ARGB1555(const GLfloat src[4], void *dst)
608 {
609 GLubyte v[4];
610 _mesa_unclamped_float_rgba_to_ubyte(v, src);
611 pack_ubyte_ARGB1555(v, dst);
612 }
613
614
615 /* MESA_FORMAT_ARGB1555_REV */
616
617 static void
618 pack_ubyte_ARGB1555_REV(const GLubyte src[4], void *dst)
619 {
620 GLushort *d = ((GLushort *) dst), tmp;
621 tmp = PACK_COLOR_1555(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
622 *d = (tmp >> 8) | (tmp << 8);
623 }
624
625 static void
626 pack_float_ARGB1555_REV(const GLfloat src[4], void *dst)
627 {
628 GLubyte v[4];
629 _mesa_unclamped_float_rgba_to_ubyte(v, src);
630 pack_ubyte_ARGB1555_REV(v, dst);
631 }
632
633
634 /* MESA_FORMAT_AL44 */
635
636 static void
637 pack_ubyte_AL44(const GLubyte src[4], void *dst)
638 {
639 GLubyte *d = ((GLubyte *) dst);
640 *d = PACK_COLOR_44(src[ACOMP], src[RCOMP]);
641 }
642
643 static void
644 pack_float_AL44(const GLfloat src[4], void *dst)
645 {
646 GLubyte v[4];
647 UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
648 UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
649 pack_ubyte_AL44(v, dst);
650 }
651
652
653 /* MESA_FORMAT_AL88 */
654
655 static void
656 pack_ubyte_AL88(const GLubyte src[4], void *dst)
657 {
658 GLushort *d = ((GLushort *) dst);
659 *d = PACK_COLOR_88(src[ACOMP], src[RCOMP]);
660 }
661
662 static void
663 pack_float_AL88(const GLfloat src[4], void *dst)
664 {
665 GLubyte v[4];
666 UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
667 UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
668 pack_ubyte_AL88(v, dst);
669 }
670
671
672 /* MESA_FORMAT_AL88_REV */
673
674 static void
675 pack_ubyte_AL88_REV(const GLubyte src[4], void *dst)
676 {
677 GLushort *d = ((GLushort *) dst);
678 *d = PACK_COLOR_88(src[RCOMP], src[ACOMP]);
679 }
680
681 static void
682 pack_float_AL88_REV(const GLfloat src[4], void *dst)
683 {
684 GLubyte v[4];
685 UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
686 UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
687 pack_ubyte_AL88_REV(v, dst);
688 }
689
690
691 /* MESA_FORMAT_AL1616 */
692
693 static void
694 pack_ubyte_AL1616(const GLubyte src[4], void *dst)
695 {
696 GLuint *d = ((GLuint *) dst);
697 GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
698 GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
699 *d = PACK_COLOR_1616(a, l);
700 }
701
702 static void
703 pack_float_AL1616(const GLfloat src[4], void *dst)
704 {
705 GLuint *d = ((GLuint *) dst);
706 GLushort l, a;
707 UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
708 UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
709 *d = PACK_COLOR_1616(a, l);
710 }
711
712
713 /* MESA_FORMAT_AL1616_REV */
714
715 static void
716 pack_ubyte_AL1616_REV(const GLubyte src[4], void *dst)
717 {
718 GLuint *d = ((GLuint *) dst);
719 GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
720 GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
721 *d = PACK_COLOR_1616(l, a);
722 }
723
724 static void
725 pack_float_AL1616_REV(const GLfloat src[4], void *dst)
726 {
727 GLuint *d = ((GLuint *) dst);
728 GLushort l, a;
729 UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
730 UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
731 *d = PACK_COLOR_1616(l, a);
732 }
733
734
735 /* MESA_FORMAT_RGB332 */
736
737 static void
738 pack_ubyte_RGB332(const GLubyte src[4], void *dst)
739 {
740 GLubyte *d = ((GLubyte *) dst);
741 *d = PACK_COLOR_332(src[RCOMP], src[GCOMP], src[BCOMP]);
742 }
743
744 static void
745 pack_float_RGB332(const GLfloat src[4], void *dst)
746 {
747 GLubyte v[4];
748 UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
749 UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
750 UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
751 pack_ubyte_RGB332(v, dst);
752 }
753
754
755 /* MESA_FORMAT_A8 */
756
757 static void
758 pack_ubyte_A8(const GLubyte src[4], void *dst)
759 {
760 GLubyte *d = ((GLubyte *) dst);
761 *d = src[ACOMP];
762 }
763
764 static void
765 pack_float_A8(const GLfloat src[4], void *dst)
766 {
767 GLubyte *d = ((GLubyte *) dst);
768 UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[ACOMP]);
769 }
770
771
772 /* MESA_FORMAT_A16 */
773
774 static void
775 pack_ubyte_A16(const GLubyte src[4], void *dst)
776 {
777 GLushort *d = ((GLushort *) dst);
778 *d = UBYTE_TO_USHORT(src[ACOMP]);
779 }
780
781 static void
782 pack_float_A16(const GLfloat src[4], void *dst)
783 {
784 GLushort *d = ((GLushort *) dst);
785 UNCLAMPED_FLOAT_TO_USHORT(d[0], src[ACOMP]);
786 }
787
788
789 /* MESA_FORMAT_L8 */
790
791 static void
792 pack_ubyte_L8(const GLubyte src[4], void *dst)
793 {
794 GLubyte *d = ((GLubyte *) dst);
795 *d = src[RCOMP];
796 }
797
798 static void
799 pack_float_L8(const GLfloat src[4], void *dst)
800 {
801 GLubyte *d = ((GLubyte *) dst);
802 UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
803 }
804
805
806 /* MESA_FORMAT_L16 */
807
808 static void
809 pack_ubyte_L16(const GLubyte src[4], void *dst)
810 {
811 GLushort *d = ((GLushort *) dst);
812 *d = UBYTE_TO_USHORT(src[RCOMP]);
813 }
814
815 static void
816 pack_float_L16(const GLfloat src[4], void *dst)
817 {
818 GLushort *d = ((GLushort *) dst);
819 UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
820 }
821
822
823 /* MESA_FORMAT_YCBCR */
824
825 static void
826 pack_ubyte_YCBCR(const GLubyte src[4], void *dst)
827 {
828 /* todo */
829 }
830
831 static void
832 pack_float_YCBCR(const GLfloat src[4], void *dst)
833 {
834 /* todo */
835 }
836
837
838 /* MESA_FORMAT_YCBCR_REV */
839
840 static void
841 pack_ubyte_YCBCR_REV(const GLubyte src[4], void *dst)
842 {
843 /* todo */
844 }
845
846 static void
847 pack_float_YCBCR_REV(const GLfloat src[4], void *dst)
848 {
849 /* todo */
850 }
851
852
853 /* MESA_FORMAT_R8 */
854
855 static void
856 pack_ubyte_R8(const GLubyte src[4], void *dst)
857 {
858 GLubyte *d = ((GLubyte *) dst);
859 *d = src[RCOMP];
860 }
861
862 static void
863 pack_float_R8(const GLfloat src[4], void *dst)
864 {
865 GLubyte *d = ((GLubyte *) dst);
866 GLubyte r;
867 UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
868 d[0] = r;
869 }
870
871
872 /* MESA_FORMAT_GR88 */
873
874 static void
875 pack_ubyte_GR88(const GLubyte src[4], void *dst)
876 {
877 GLubyte *d = ((GLubyte *) dst);
878 *d = PACK_COLOR_88(src[GCOMP], src[RCOMP]);
879 }
880
881 static void
882 pack_float_GR88(const GLfloat src[4], void *dst)
883 {
884 GLushort *d = ((GLushort *) dst);
885 GLubyte r, g;
886 UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
887 UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
888 *d = PACK_COLOR_88(g, r);
889 }
890
891
892 /* MESA_FORMAT_RG88 */
893
894 static void
895 pack_ubyte_RG88(const GLubyte src[4], void *dst)
896 {
897 GLubyte *d = ((GLubyte *) dst);
898 *d = PACK_COLOR_88(src[RCOMP], src[GCOMP]);
899 }
900
901 static void
902 pack_float_RG88(const GLfloat src[4], void *dst)
903 {
904 GLushort *d = ((GLushort *) dst);
905 GLubyte r, g;
906 UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
907 UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
908 *d = PACK_COLOR_88(r, g);
909 }
910
911
912 /* MESA_FORMAT_R16 */
913
914 static void
915 pack_ubyte_R16(const GLubyte src[4], void *dst)
916 {
917 GLushort *d = ((GLushort *) dst);
918 *d = UBYTE_TO_USHORT(src[RCOMP]);
919 }
920
921 static void
922 pack_float_R16(const GLfloat src[4], void *dst)
923 {
924 GLushort *d = ((GLushort *) dst);
925 UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
926 }
927
928
929 /* MESA_FORMAT_RG1616 */
930
931 static void
932 pack_ubyte_RG1616(const GLubyte src[4], void *dst)
933 {
934 GLuint *d = ((GLuint *) dst);
935 GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
936 GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
937 *d = PACK_COLOR_1616(g, r);
938 }
939
940 static void
941 pack_float_RG1616(const GLfloat src[4], void *dst)
942 {
943 GLuint *d = ((GLuint *) dst);
944 GLushort r, g;
945 UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
946 UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
947 *d = PACK_COLOR_1616(g, r);
948 }
949
950
951 /* MESA_FORMAT_RG1616_REV */
952
953 static void
954 pack_ubyte_RG1616_REV(const GLubyte src[4], void *dst)
955 {
956 GLuint *d = ((GLuint *) dst);
957 GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
958 GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
959 *d = PACK_COLOR_1616(r, g);
960 }
961
962
963 static void
964 pack_float_RG1616_REV(const GLfloat src[4], void *dst)
965 {
966 GLuint *d = ((GLuint *) dst);
967 GLushort r, g;
968 UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
969 UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
970 *d = PACK_COLOR_1616(r, g);
971 }
972
973
974 /* MESA_FORMAT_ARGB2101010 */
975
976 static void
977 pack_ubyte_ARGB2101010(const GLubyte src[4], void *dst)
978 {
979 GLuint *d = ((GLuint *) dst);
980 GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
981 GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
982 GLushort b = UBYTE_TO_USHORT(src[BCOMP]);
983 GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
984 *d = PACK_COLOR_2101010_US(a, r, g, b);
985 }
986
987 static void
988 pack_float_ARGB2101010(const GLfloat src[4], void *dst)
989 {
990 GLuint *d = ((GLuint *) dst);
991 GLushort r, g, b, a;
992 UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
993 UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
994 UNCLAMPED_FLOAT_TO_USHORT(b, src[BCOMP]);
995 UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
996 *d = PACK_COLOR_2101010_US(a, r, g, b);
997 }
998
999
1000 /* MESA_FORMAT_SRGB8 */
1001
1002 static void
1003 pack_ubyte_SRGB8(const GLubyte src[4], void *dst)
1004 {
1005 GLubyte *d = ((GLubyte *) dst);
1006 d[2] = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1007 d[1] = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1008 d[0] = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1009 }
1010
1011 static void
1012 pack_float_SRGB8(const GLfloat src[4], void *dst)
1013 {
1014 GLubyte *d = ((GLubyte *) dst);
1015 d[2] = linear_float_to_srgb_ubyte(src[RCOMP]);
1016 d[1] = linear_float_to_srgb_ubyte(src[GCOMP]);
1017 d[0] = linear_float_to_srgb_ubyte(src[BCOMP]);
1018 }
1019
1020
1021 /* MESA_FORMAT_SRGBA8 */
1022
1023 static void
1024 pack_ubyte_SRGBA8(const GLubyte src[4], void *dst)
1025 {
1026 GLuint *d = ((GLuint *) dst);
1027 GLubyte r = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1028 GLubyte g = linear_ubyte_to_srgb_ubyte(src[GCOMP]);
1029 GLubyte b = linear_ubyte_to_srgb_ubyte(src[BCOMP]);
1030 *d = PACK_COLOR_8888(r, g, b, src[ACOMP]);
1031 }
1032
1033 static void
1034 pack_float_SRGBA8(const GLfloat src[4], void *dst)
1035 {
1036 GLuint *d = ((GLuint *) dst);
1037 GLubyte r, g, b, a;
1038 r = linear_float_to_srgb_ubyte(src[RCOMP]);
1039 g = linear_float_to_srgb_ubyte(src[GCOMP]);
1040 b = linear_float_to_srgb_ubyte(src[BCOMP]);
1041 UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
1042 *d = PACK_COLOR_8888(r, g, b, a);
1043 }
1044
1045
1046 /* MESA_FORMAT_SARGB8 */
1047
1048 static void
1049 pack_ubyte_SARGB8(const GLubyte src[4], void *dst)
1050 {
1051 GLuint *d = ((GLuint *) dst);
1052 GLubyte r = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1053 GLubyte g = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1054 GLubyte b = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1055 *d = PACK_COLOR_8888(src[ACOMP], r, g, b);
1056 }
1057
1058 static void
1059 pack_float_SARGB8(const GLfloat src[4], void *dst)
1060 {
1061 GLuint *d = ((GLuint *) dst);
1062 GLubyte r, g, b, a;
1063 r = linear_float_to_srgb_ubyte(src[RCOMP]);
1064 g = linear_float_to_srgb_ubyte(src[GCOMP]);
1065 b = linear_float_to_srgb_ubyte(src[BCOMP]);
1066 UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
1067 *d = PACK_COLOR_8888(a, r, g, b);
1068 }
1069
1070
1071 /* MESA_FORMAT_SL8 */
1072
1073 static void
1074 pack_ubyte_SL8(const GLubyte src[4], void *dst)
1075 {
1076 GLubyte *d = ((GLubyte *) dst);
1077 *d = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1078 }
1079
1080 static void
1081 pack_float_SL8(const GLfloat src[4], void *dst)
1082 {
1083 GLubyte *d = ((GLubyte *) dst);
1084 GLubyte l = linear_float_to_srgb_ubyte(src[RCOMP]);
1085 *d = l;
1086 }
1087
1088
1089 /* MESA_FORMAT_SLA8 */
1090
1091 static void
1092 pack_ubyte_SLA8(const GLubyte src[4], void *dst)
1093 {
1094 GLushort *d = ((GLushort *) dst);
1095 GLubyte l = linear_ubyte_to_srgb_ubyte(src[RCOMP]);
1096 *d = PACK_COLOR_88(src[ACOMP], l);
1097 }
1098
1099 static void
1100 pack_float_SLA8(const GLfloat src[4], void *dst)
1101 {
1102 GLushort *d = ((GLushort *) dst);
1103 GLubyte a, l = linear_float_to_srgb_ubyte(src[RCOMP]);
1104 CLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
1105 *d = PACK_COLOR_88(a, l);
1106 }
1107
1108
1109 /* MESA_FORMAT_RGBA_FLOAT32 */
1110
1111 static void
1112 pack_ubyte_RGBA_FLOAT32(const GLubyte src[4], void *dst)
1113 {
1114 GLfloat *d = ((GLfloat *) dst);
1115 d[0] = UBYTE_TO_FLOAT(src[0]);
1116 d[1] = UBYTE_TO_FLOAT(src[1]);
1117 d[2] = UBYTE_TO_FLOAT(src[2]);
1118 d[3] = UBYTE_TO_FLOAT(src[3]);
1119 }
1120
1121 static void
1122 pack_float_RGBA_FLOAT32(const GLfloat src[4], void *dst)
1123 {
1124 GLfloat *d = ((GLfloat *) dst);
1125 d[0] = src[0];
1126 d[1] = src[1];
1127 d[2] = src[2];
1128 d[3] = src[3];
1129 }
1130
1131
1132 /* MESA_FORMAT_RGBA_FLOAT16 */
1133
1134 static void
1135 pack_ubyte_RGBA_FLOAT16(const GLubyte src[4], void *dst)
1136 {
1137 GLhalfARB *d = ((GLhalfARB *) dst);
1138 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[0]));
1139 d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[1]));
1140 d[2] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[2]));
1141 d[3] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[3]));
1142 }
1143
1144 static void
1145 pack_float_RGBA_FLOAT16(const GLfloat src[4], void *dst)
1146 {
1147 GLhalfARB *d = ((GLhalfARB *) dst);
1148 d[0] = _mesa_float_to_half(src[0]);
1149 d[1] = _mesa_float_to_half(src[1]);
1150 d[2] = _mesa_float_to_half(src[2]);
1151 d[3] = _mesa_float_to_half(src[3]);
1152 }
1153
1154
1155 /* MESA_FORMAT_RGB_FLOAT32 */
1156
1157 static void
1158 pack_ubyte_RGB_FLOAT32(const GLubyte src[4], void *dst)
1159 {
1160 GLfloat *d = ((GLfloat *) dst);
1161 d[0] = UBYTE_TO_FLOAT(src[0]);
1162 d[1] = UBYTE_TO_FLOAT(src[1]);
1163 d[2] = UBYTE_TO_FLOAT(src[2]);
1164 }
1165
1166 static void
1167 pack_float_RGB_FLOAT32(const GLfloat src[4], void *dst)
1168 {
1169 GLfloat *d = ((GLfloat *) dst);
1170 d[0] = src[0];
1171 d[1] = src[1];
1172 d[2] = src[2];
1173 }
1174
1175
1176 /* MESA_FORMAT_RGB_FLOAT16 */
1177
1178 static void
1179 pack_ubyte_RGB_FLOAT16(const GLubyte src[4], void *dst)
1180 {
1181 GLhalfARB *d = ((GLhalfARB *) dst);
1182 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[0]));
1183 d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[1]));
1184 d[2] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[2]));
1185 }
1186
1187 static void
1188 pack_float_RGB_FLOAT16(const GLfloat src[4], void *dst)
1189 {
1190 GLhalfARB *d = ((GLhalfARB *) dst);
1191 d[0] = _mesa_float_to_half(src[0]);
1192 d[1] = _mesa_float_to_half(src[1]);
1193 d[2] = _mesa_float_to_half(src[2]);
1194 }
1195
1196
1197 /* MESA_FORMAT_ALPHA_FLOAT32 */
1198
1199 static void
1200 pack_ubyte_ALPHA_FLOAT32(const GLubyte src[4], void *dst)
1201 {
1202 GLfloat *d = ((GLfloat *) dst);
1203 d[0] = UBYTE_TO_FLOAT(src[ACOMP]);
1204 }
1205
1206 static void
1207 pack_float_ALPHA_FLOAT32(const GLfloat src[4], void *dst)
1208 {
1209 GLfloat *d = ((GLfloat *) dst);
1210 d[0] = src[ACOMP];
1211 }
1212
1213
1214 /* MESA_FORMAT_ALPHA_FLOAT16 */
1215
1216 static void
1217 pack_ubyte_ALPHA_FLOAT16(const GLubyte src[4], void *dst)
1218 {
1219 GLhalfARB *d = ((GLhalfARB *) dst);
1220 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[ACOMP]));
1221 }
1222
1223 static void
1224 pack_float_ALPHA_FLOAT16(const GLfloat src[4], void *dst)
1225 {
1226 GLhalfARB *d = ((GLhalfARB *) dst);
1227 d[0] = _mesa_float_to_half(src[ACOMP]);
1228 }
1229
1230
1231 /* MESA_FORMAT_LUMINANCE_FLOAT32 (and INTENSITY_FLOAT32, R_FLOAT32) */
1232
1233 static void
1234 pack_ubyte_LUMINANCE_FLOAT32(const GLubyte src[4], void *dst)
1235 {
1236 GLfloat *d = ((GLfloat *) dst);
1237 d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
1238 }
1239
1240 static void
1241 pack_float_LUMINANCE_FLOAT32(const GLfloat src[4], void *dst)
1242 {
1243 GLfloat *d = ((GLfloat *) dst);
1244 d[0] = src[RCOMP];
1245 }
1246
1247
1248 /* MESA_FORMAT_LUMINANCE_FLOAT16 (and INTENSITY_FLOAT16, R_FLOAT32) */
1249
1250 static void
1251 pack_ubyte_LUMINANCE_FLOAT16(const GLubyte src[4], void *dst)
1252 {
1253 GLhalfARB *d = ((GLhalfARB *) dst);
1254 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
1255 }
1256
1257 static void
1258 pack_float_LUMINANCE_FLOAT16(const GLfloat src[4], void *dst)
1259 {
1260 GLhalfARB *d = ((GLhalfARB *) dst);
1261 d[0] = _mesa_float_to_half(src[RCOMP]);
1262 }
1263
1264
1265 /* MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32 */
1266
1267 static void
1268 pack_ubyte_LUMINANCE_ALPHA_FLOAT32(const GLubyte src[4], void *dst)
1269 {
1270 GLfloat *d = ((GLfloat *) dst);
1271 d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
1272 d[1] = UBYTE_TO_FLOAT(src[ACOMP]);
1273 }
1274
1275 static void
1276 pack_float_LUMINANCE_ALPHA_FLOAT32(const GLfloat src[4], void *dst)
1277 {
1278 GLfloat *d = ((GLfloat *) dst);
1279 d[0] = src[RCOMP];
1280 d[1] = src[ACOMP];
1281 }
1282
1283
1284 /* MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16 */
1285
1286 static void
1287 pack_ubyte_LUMINANCE_ALPHA_FLOAT16(const GLubyte src[4], void *dst)
1288 {
1289 GLhalfARB *d = ((GLhalfARB *) dst);
1290 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
1291 d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[ACOMP]));
1292 }
1293
1294 static void
1295 pack_float_LUMINANCE_ALPHA_FLOAT16(const GLfloat src[4], void *dst)
1296 {
1297 GLhalfARB *d = ((GLhalfARB *) dst);
1298 d[0] = _mesa_float_to_half(src[RCOMP]);
1299 d[1] = _mesa_float_to_half(src[ACOMP]);
1300 }
1301
1302
1303 /* MESA_FORMAT_RG_FLOAT32 */
1304
1305 static void
1306 pack_ubyte_RG_FLOAT32(const GLubyte src[4], void *dst)
1307 {
1308 GLfloat *d = ((GLfloat *) dst);
1309 d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
1310 d[1] = UBYTE_TO_FLOAT(src[GCOMP]);
1311 }
1312
1313 static void
1314 pack_float_RG_FLOAT32(const GLfloat src[4], void *dst)
1315 {
1316 GLfloat *d = ((GLfloat *) dst);
1317 d[0] = src[RCOMP];
1318 d[1] = src[GCOMP];
1319 }
1320
1321
1322 /* MESA_FORMAT_RG_FLOAT16 */
1323
1324 static void
1325 pack_ubyte_RG_FLOAT16(const GLubyte src[4], void *dst)
1326 {
1327 GLhalfARB *d = ((GLhalfARB *) dst);
1328 d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
1329 d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[GCOMP]));
1330 }
1331
1332 static void
1333 pack_float_RG_FLOAT16(const GLfloat src[4], void *dst)
1334 {
1335 GLhalfARB *d = ((GLhalfARB *) dst);
1336 d[0] = _mesa_float_to_half(src[RCOMP]);
1337 d[1] = _mesa_float_to_half(src[GCOMP]);
1338 }
1339
1340
1341 /* MESA_FORMAT_DUDV8 */
1342
1343 static void
1344 pack_ubyte_DUDV8(const GLubyte src[4], void *dst)
1345 {
1346 /* XXX is this ever used? */
1347 GLushort *d = ((GLushort *) dst);
1348 *d = PACK_COLOR_88(src[0], src[1]);
1349 }
1350
1351 static void
1352 pack_float_DUDV8(const GLfloat src[4], void *dst)
1353 {
1354 GLushort *d = ((GLushort *) dst);
1355 GLbyte du, dv;
1356 du = FLOAT_TO_BYTE(CLAMP(src[0], 0.0F, 1.0F));
1357 dv = FLOAT_TO_BYTE(CLAMP(src[1], 0.0F, 1.0F));
1358 *d = PACK_COLOR_88(du, dv);
1359 }
1360
1361
1362 /* MESA_FORMAT_RGBA_16 */
1363
1364 static void
1365 pack_ubyte_RGBA_16(const GLubyte src[4], void *dst)
1366 {
1367 GLushort *d = ((GLushort *) dst);
1368 d[0] = UBYTE_TO_USHORT(src[RCOMP]);
1369 d[1] = UBYTE_TO_USHORT(src[GCOMP]);
1370 d[2] = UBYTE_TO_USHORT(src[BCOMP]);
1371 d[3] = UBYTE_TO_USHORT(src[ACOMP]);
1372 }
1373
1374 static void
1375 pack_float_RGBA_16(const GLfloat src[4], void *dst)
1376 {
1377 GLushort *d = ((GLushort *) dst);
1378 UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
1379 UNCLAMPED_FLOAT_TO_USHORT(d[1], src[GCOMP]);
1380 UNCLAMPED_FLOAT_TO_USHORT(d[2], src[BCOMP]);
1381 UNCLAMPED_FLOAT_TO_USHORT(d[3], src[ACOMP]);
1382 }
1383
1384
1385
1386 /*
1387 * MESA_FORMAT_SIGNED_R8
1388 */
1389
1390 static void
1391 pack_float_SIGNED_R8(const GLfloat src[4], void *dst)
1392 {
1393 GLbyte *d = (GLbyte *) dst;
1394 *d = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1395 }
1396
1397
1398 /*
1399 * MESA_FORMAT_SIGNED_RG88_REV
1400 */
1401
1402 static void
1403 pack_float_SIGNED_RG88_REV(const GLfloat src[4], void *dst)
1404 {
1405 GLushort *d = (GLushort *) dst;
1406 GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1407 GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
1408 *d = (g << 8) | r;
1409 }
1410
1411
1412 /*
1413 * MESA_FORMAT_SIGNED_RGBX8888
1414 */
1415
1416 static void
1417 pack_float_SIGNED_RGBX8888(const GLfloat src[4], void *dst)
1418 {
1419 GLuint *d = (GLuint *) dst;
1420 GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1421 GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
1422 GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
1423 GLbyte a = 127;
1424 *d = PACK_COLOR_8888(r, g, b, a);
1425 }
1426
1427
1428 /*
1429 * MESA_FORMAT_SIGNED_RGBA8888
1430 */
1431
1432 static void
1433 pack_float_SIGNED_RGBA8888(const GLfloat src[4], void *dst)
1434 {
1435 GLuint *d = (GLuint *) dst;
1436 GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1437 GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
1438 GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
1439 GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
1440 *d = PACK_COLOR_8888(r, g, b, a);
1441 }
1442
1443
1444 /*
1445 * MESA_FORMAT_SIGNED_RGBA8888_REV
1446 */
1447
1448 static void
1449 pack_float_SIGNED_RGBA8888_REV(const GLfloat src[4], void *dst)
1450 {
1451 GLuint *d = (GLuint *) dst;
1452 GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1453 GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
1454 GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
1455 GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
1456 *d = PACK_COLOR_8888(a, b, g, r);
1457 }
1458
1459
1460 /*
1461 * MESA_FORMAT_SIGNED_R16
1462 */
1463
1464 static void
1465 pack_float_SIGNED_R16(const GLfloat src[4], void *dst)
1466 {
1467 GLshort *d = (GLshort *) dst;
1468 *d = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1469 }
1470
1471
1472 /*
1473 * MESA_FORMAT_SIGNED_GR1616
1474 */
1475
1476 static void
1477 pack_float_SIGNED_GR1616(const GLfloat src[4], void *dst)
1478 {
1479 GLuint *d = (GLuint *) dst;
1480 GLshort r = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1481 GLshort g = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
1482 *d = (g << 16) | (r & 0xffff);
1483 }
1484
1485
1486 /*
1487 * MESA_FORMAT_SIGNED_RGB_16
1488 */
1489
1490 static void
1491 pack_float_SIGNED_RGB_16(const GLfloat src[4], void *dst)
1492 {
1493 GLshort *d = (GLshort *) dst;
1494 d[0] = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1495 d[1] = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
1496 d[2] = FLOAT_TO_SHORT(CLAMP(src[BCOMP], -1.0f, 1.0f));
1497 }
1498
1499
1500 /*
1501 * MESA_FORMAT_SIGNED_RGBA_16
1502 */
1503
1504 static void
1505 pack_float_SIGNED_RGBA_16(const GLfloat src[4], void *dst)
1506 {
1507 GLshort *d = (GLshort *) dst;
1508 d[0] = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1509 d[1] = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
1510 d[2] = FLOAT_TO_SHORT(CLAMP(src[BCOMP], -1.0f, 1.0f));
1511 d[3] = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
1512 }
1513
1514
1515 /*
1516 * MESA_FORMAT_SIGNED_A8
1517 */
1518
1519 static void
1520 pack_float_SIGNED_A8(const GLfloat src[4], void *dst)
1521 {
1522 GLbyte *d = (GLbyte *) dst;
1523 *d = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
1524 }
1525
1526
1527 /*
1528 * MESA_FORMAT_SIGNED_L8
1529 */
1530
1531 static void
1532 pack_float_SIGNED_L8(const GLfloat src[4], void *dst)
1533 {
1534 GLbyte *d = (GLbyte *) dst;
1535 *d = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1536 }
1537
1538
1539 /*
1540 * MESA_FORMAT_SIGNED_AL88
1541 */
1542
1543 static void
1544 pack_float_SIGNED_AL88(const GLfloat src[4], void *dst)
1545 {
1546 GLushort *d = (GLushort *) dst;
1547 GLbyte l = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
1548 GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
1549 *d = (a << 8) | l;
1550 }
1551
1552
1553 /*
1554 * MESA_FORMAT_SIGNED_A16
1555 */
1556
1557 static void
1558 pack_float_SIGNED_A16(const GLfloat src[4], void *dst)
1559 {
1560 GLshort *d = (GLshort *) dst;
1561 *d = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
1562 }
1563
1564
1565 /*
1566 * MESA_FORMAT_SIGNED_L16
1567 */
1568
1569 static void
1570 pack_float_SIGNED_L16(const GLfloat src[4], void *dst)
1571 {
1572 GLshort *d = (GLshort *) dst;
1573 *d = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1574 }
1575
1576
1577 /*
1578 * MESA_FORMAT_SIGNED_AL1616
1579 */
1580
1581 static void
1582 pack_float_SIGNED_AL1616(const GLfloat src[4], void *dst)
1583 {
1584 GLuint *d = (GLuint *) dst;
1585 GLshort l = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
1586 GLshort a = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
1587 *d = PACK_COLOR_1616(a, l);
1588 }
1589
1590
1591 /*
1592 * MESA_FORMAT_RGB9_E5_FLOAT;
1593 */
1594
1595 static void
1596 pack_float_RGB9_E5_FLOAT(const GLfloat src[4], void *dst)
1597 {
1598 GLuint *d = (GLuint *) dst;
1599 *d = float3_to_rgb9e5(src);
1600 }
1601
1602 static void
1603 pack_ubyte_RGB9_E5_FLOAT(const GLubyte src[4], void *dst)
1604 {
1605 GLuint *d = (GLuint *) dst;
1606 GLfloat rgb[3];
1607 rgb[0] = UBYTE_TO_FLOAT(src[RCOMP]);
1608 rgb[1] = UBYTE_TO_FLOAT(src[GCOMP]);
1609 rgb[2] = UBYTE_TO_FLOAT(src[BCOMP]);
1610 *d = float3_to_rgb9e5(rgb);
1611 }
1612
1613
1614
1615 /*
1616 * MESA_FORMAT_R11_G11_B10_FLOAT;
1617 */
1618
1619 static void
1620 pack_ubyte_R11_G11_B10_FLOAT(const GLubyte src[4], void *dst)
1621 {
1622 GLuint *d = (GLuint *) dst;
1623 GLfloat rgb[3];
1624 rgb[0] = UBYTE_TO_FLOAT(src[RCOMP]);
1625 rgb[1] = UBYTE_TO_FLOAT(src[GCOMP]);
1626 rgb[2] = UBYTE_TO_FLOAT(src[BCOMP]);
1627 *d = float3_to_r11g11b10f(rgb);
1628 }
1629
1630 static void
1631 pack_float_R11_G11_B10_FLOAT(const GLfloat src[4], void *dst)
1632 {
1633 GLuint *d = (GLuint *) dst;
1634 *d = float3_to_r11g11b10f(src);
1635 }
1636
1637
1638
1639 /**
1640 * Return a function that can pack a GLubyte rgba[4] color.
1641 */
1642 gl_pack_ubyte_rgba_func
1643 _mesa_get_pack_ubyte_rgba_function(gl_format format)
1644 {
1645 static gl_pack_ubyte_rgba_func table[MESA_FORMAT_COUNT];
1646 static GLboolean initialized = GL_FALSE;
1647
1648 if (!initialized) {
1649 memset(table, 0, sizeof(table));
1650
1651 table[MESA_FORMAT_NONE] = NULL;
1652
1653 table[MESA_FORMAT_RGBA8888] = pack_ubyte_RGBA8888;
1654 table[MESA_FORMAT_RGBA8888_REV] = pack_ubyte_RGBA8888_REV;
1655 table[MESA_FORMAT_ARGB8888] = pack_ubyte_ARGB8888;
1656 table[MESA_FORMAT_ARGB8888_REV] = pack_ubyte_ARGB8888_REV;
1657 table[MESA_FORMAT_RGBX8888] = pack_ubyte_RGBA8888; /* reused */
1658 table[MESA_FORMAT_RGBX8888_REV] = pack_ubyte_RGBA8888_REV; /* reused */
1659 table[MESA_FORMAT_XRGB8888] = pack_ubyte_XRGB8888;
1660 table[MESA_FORMAT_XRGB8888_REV] = pack_ubyte_XRGB8888_REV;
1661 table[MESA_FORMAT_RGB888] = pack_ubyte_RGB888;
1662 table[MESA_FORMAT_BGR888] = pack_ubyte_BGR888;
1663 table[MESA_FORMAT_RGB565] = pack_ubyte_RGB565;
1664 table[MESA_FORMAT_RGB565_REV] = pack_ubyte_RGB565_REV;
1665 table[MESA_FORMAT_ARGB4444] = pack_ubyte_ARGB4444;
1666 table[MESA_FORMAT_ARGB4444_REV] = pack_ubyte_ARGB4444_REV;
1667 table[MESA_FORMAT_RGBA5551] = pack_ubyte_RGBA5551;
1668 table[MESA_FORMAT_ARGB1555] = pack_ubyte_ARGB1555;
1669 table[MESA_FORMAT_ARGB1555_REV] = pack_ubyte_ARGB1555_REV;
1670 table[MESA_FORMAT_AL44] = pack_ubyte_AL44;
1671 table[MESA_FORMAT_AL88] = pack_ubyte_AL88;
1672 table[MESA_FORMAT_AL88_REV] = pack_ubyte_AL88_REV;
1673 table[MESA_FORMAT_AL1616] = pack_ubyte_AL1616;
1674 table[MESA_FORMAT_AL1616_REV] = pack_ubyte_AL1616_REV;
1675 table[MESA_FORMAT_RGB332] = pack_ubyte_RGB332;
1676 table[MESA_FORMAT_A8] = pack_ubyte_A8;
1677 table[MESA_FORMAT_A16] = pack_ubyte_A16;
1678 table[MESA_FORMAT_L8] = pack_ubyte_L8;
1679 table[MESA_FORMAT_L16] = pack_ubyte_L16;
1680 table[MESA_FORMAT_I8] = pack_ubyte_L8; /* reuse pack_ubyte_L8 */
1681 table[MESA_FORMAT_I16] = pack_ubyte_L16; /* reuse pack_ubyte_L16 */
1682 table[MESA_FORMAT_YCBCR] = pack_ubyte_YCBCR;
1683 table[MESA_FORMAT_YCBCR_REV] = pack_ubyte_YCBCR_REV;
1684 table[MESA_FORMAT_R8] = pack_ubyte_R8;
1685 table[MESA_FORMAT_GR88] = pack_ubyte_GR88;
1686 table[MESA_FORMAT_RG88] = pack_ubyte_RG88;
1687 table[MESA_FORMAT_R16] = pack_ubyte_R16;
1688 table[MESA_FORMAT_RG1616] = pack_ubyte_RG1616;
1689 table[MESA_FORMAT_RG1616_REV] = pack_ubyte_RG1616_REV;
1690 table[MESA_FORMAT_ARGB2101010] = pack_ubyte_ARGB2101010;
1691
1692 /* should never convert RGBA to these formats */
1693 table[MESA_FORMAT_Z24_S8] = NULL;
1694 table[MESA_FORMAT_S8_Z24] = NULL;
1695 table[MESA_FORMAT_Z16] = NULL;
1696 table[MESA_FORMAT_X8_Z24] = NULL;
1697 table[MESA_FORMAT_Z24_X8] = NULL;
1698 table[MESA_FORMAT_Z32] = NULL;
1699 table[MESA_FORMAT_S8] = NULL;
1700
1701 /* sRGB */
1702 table[MESA_FORMAT_SRGB8] = pack_ubyte_SRGB8;
1703 table[MESA_FORMAT_SRGBA8] = pack_ubyte_SRGBA8;
1704 table[MESA_FORMAT_SARGB8] = pack_ubyte_SARGB8;
1705 table[MESA_FORMAT_SL8] = pack_ubyte_SL8;
1706 table[MESA_FORMAT_SLA8] = pack_ubyte_SLA8;
1707
1708 /* n/a */
1709 table[MESA_FORMAT_SRGB_DXT1] = NULL; /* pack_ubyte_SRGB_DXT1; */
1710 table[MESA_FORMAT_SRGBA_DXT1] = NULL; /* pack_ubyte_SRGBA_DXT1; */
1711 table[MESA_FORMAT_SRGBA_DXT3] = NULL; /* pack_ubyte_SRGBA_DXT3; */
1712 table[MESA_FORMAT_SRGBA_DXT5] = NULL; /* pack_ubyte_SRGBA_DXT5; */
1713
1714 table[MESA_FORMAT_RGB_FXT1] = NULL; /* pack_ubyte_RGB_FXT1; */
1715 table[MESA_FORMAT_RGBA_FXT1] = NULL; /* pack_ubyte_RGBA_FXT1; */
1716 table[MESA_FORMAT_RGB_DXT1] = NULL; /* pack_ubyte_RGB_DXT1; */
1717 table[MESA_FORMAT_RGBA_DXT1] = NULL; /* pack_ubyte_RGBA_DXT1; */
1718 table[MESA_FORMAT_RGBA_DXT3] = NULL; /* pack_ubyte_RGBA_DXT3; */
1719 table[MESA_FORMAT_RGBA_DXT5] = NULL; /* pack_ubyte_RGBA_DXT5; */
1720
1721 table[MESA_FORMAT_RGBA_FLOAT32] = pack_ubyte_RGBA_FLOAT32;
1722 table[MESA_FORMAT_RGBA_FLOAT16] = pack_ubyte_RGBA_FLOAT16;
1723 table[MESA_FORMAT_RGB_FLOAT32] = pack_ubyte_RGB_FLOAT32;
1724 table[MESA_FORMAT_RGB_FLOAT16] = pack_ubyte_RGB_FLOAT16;
1725 table[MESA_FORMAT_ALPHA_FLOAT32] = pack_ubyte_ALPHA_FLOAT32;
1726 table[MESA_FORMAT_ALPHA_FLOAT16] = pack_ubyte_ALPHA_FLOAT16;
1727 table[MESA_FORMAT_LUMINANCE_FLOAT32] = pack_ubyte_LUMINANCE_FLOAT32;
1728 table[MESA_FORMAT_LUMINANCE_FLOAT16] = pack_ubyte_LUMINANCE_FLOAT16;
1729 table[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32] = pack_ubyte_LUMINANCE_ALPHA_FLOAT32;
1730 table[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16] = pack_ubyte_LUMINANCE_ALPHA_FLOAT16;
1731 table[MESA_FORMAT_INTENSITY_FLOAT32] = pack_ubyte_LUMINANCE_FLOAT32;
1732 table[MESA_FORMAT_INTENSITY_FLOAT16] = pack_ubyte_LUMINANCE_FLOAT16;
1733 table[MESA_FORMAT_R_FLOAT32] = pack_ubyte_LUMINANCE_FLOAT32;
1734 table[MESA_FORMAT_R_FLOAT16] = pack_ubyte_LUMINANCE_FLOAT16;
1735 table[MESA_FORMAT_RG_FLOAT32] = pack_ubyte_RG_FLOAT32;
1736 table[MESA_FORMAT_RG_FLOAT16] = pack_ubyte_RG_FLOAT16;
1737
1738 /* n/a */
1739 table[MESA_FORMAT_RGBA_INT8] = NULL; /* pack_ubyte_RGBA_INT8 */
1740 table[MESA_FORMAT_RGBA_INT16] = NULL; /* pack_ubyte_RGBA_INT16 */
1741 table[MESA_FORMAT_RGBA_INT32] = NULL; /* pack_ubyte_RGBA_INT32 */
1742 table[MESA_FORMAT_RGBA_UINT8] = NULL; /* pack_ubyte_RGBA_UINT8 */
1743 table[MESA_FORMAT_RGBA_UINT16] = NULL; /* pack_ubyte_RGBA_UINT16 */
1744 table[MESA_FORMAT_RGBA_UINT32] = NULL; /* pack_ubyte_RGBA_UINT32 */
1745
1746 table[MESA_FORMAT_DUDV8] = pack_ubyte_DUDV8;
1747
1748 table[MESA_FORMAT_RGBA_16] = pack_ubyte_RGBA_16;
1749
1750 /* n/a */
1751 table[MESA_FORMAT_SIGNED_R8] = NULL;
1752 table[MESA_FORMAT_SIGNED_RG88_REV] = NULL;
1753 table[MESA_FORMAT_SIGNED_RGBX8888] = NULL;
1754 table[MESA_FORMAT_SIGNED_RGBA8888] = NULL;
1755 table[MESA_FORMAT_SIGNED_RGBA8888_REV] = NULL;
1756 table[MESA_FORMAT_SIGNED_R16] = NULL;
1757 table[MESA_FORMAT_SIGNED_GR1616] = NULL;
1758 table[MESA_FORMAT_SIGNED_RGB_16] = NULL;
1759 table[MESA_FORMAT_SIGNED_RGBA_16] = NULL;
1760 table[MESA_FORMAT_SIGNED_A8] = NULL;
1761 table[MESA_FORMAT_SIGNED_L8] = NULL;
1762 table[MESA_FORMAT_SIGNED_AL88] = NULL;
1763 table[MESA_FORMAT_SIGNED_I8] = NULL;
1764 table[MESA_FORMAT_SIGNED_A16] = NULL;
1765 table[MESA_FORMAT_SIGNED_L16] = NULL;
1766 table[MESA_FORMAT_SIGNED_AL1616] = NULL;
1767 table[MESA_FORMAT_SIGNED_I16] = NULL;
1768
1769
1770 table[MESA_FORMAT_RGBA_16] = pack_ubyte_RGBA_16;
1771
1772 table[MESA_FORMAT_RGB9_E5_FLOAT] = pack_ubyte_RGB9_E5_FLOAT;
1773 table[MESA_FORMAT_R11_G11_B10_FLOAT] = pack_ubyte_R11_G11_B10_FLOAT;
1774
1775 initialized = GL_TRUE;
1776 }
1777
1778 return table[format];
1779 }
1780
1781
1782
1783 /**
1784 * Return a function that can pack a GLfloat rgba[4] color.
1785 */
1786 gl_pack_float_rgba_func
1787 _mesa_get_pack_float_rgba_function(gl_format format)
1788 {
1789 static gl_pack_float_rgba_func table[MESA_FORMAT_COUNT];
1790 static GLboolean initialized = GL_FALSE;
1791
1792 if (!initialized) {
1793 memset(table, 0, sizeof(table));
1794
1795 table[MESA_FORMAT_NONE] = NULL;
1796
1797 table[MESA_FORMAT_RGBA8888] = pack_float_RGBA8888;
1798 table[MESA_FORMAT_RGBA8888_REV] = pack_float_RGBA8888_REV;
1799 table[MESA_FORMAT_ARGB8888] = pack_float_ARGB8888;
1800 table[MESA_FORMAT_ARGB8888_REV] = pack_float_ARGB8888_REV;
1801 table[MESA_FORMAT_RGBX8888] = pack_float_RGBA8888; /* reused */
1802 table[MESA_FORMAT_RGBX8888_REV] = pack_float_RGBA8888_REV; /* reused */
1803 table[MESA_FORMAT_XRGB8888] = pack_float_XRGB8888;
1804 table[MESA_FORMAT_XRGB8888_REV] = pack_float_XRGB8888_REV;
1805 table[MESA_FORMAT_RGB888] = pack_float_RGB888;
1806 table[MESA_FORMAT_BGR888] = pack_float_BGR888;
1807 table[MESA_FORMAT_RGB565] = pack_float_RGB565;
1808 table[MESA_FORMAT_RGB565_REV] = pack_float_RGB565_REV;
1809 table[MESA_FORMAT_ARGB4444] = pack_float_ARGB4444;
1810 table[MESA_FORMAT_ARGB4444_REV] = pack_float_ARGB4444_REV;
1811 table[MESA_FORMAT_RGBA5551] = pack_float_RGBA5551;
1812 table[MESA_FORMAT_ARGB1555] = pack_float_ARGB1555;
1813 table[MESA_FORMAT_ARGB1555_REV] = pack_float_ARGB1555_REV;
1814
1815 table[MESA_FORMAT_AL44] = pack_float_AL44;
1816 table[MESA_FORMAT_AL88] = pack_float_AL88;
1817 table[MESA_FORMAT_AL88_REV] = pack_float_AL88_REV;
1818 table[MESA_FORMAT_AL1616] = pack_float_AL1616;
1819 table[MESA_FORMAT_AL1616_REV] = pack_float_AL1616_REV;
1820 table[MESA_FORMAT_RGB332] = pack_float_RGB332;
1821 table[MESA_FORMAT_A8] = pack_float_A8;
1822 table[MESA_FORMAT_A16] = pack_float_A16;
1823 table[MESA_FORMAT_L8] = pack_float_L8;
1824 table[MESA_FORMAT_L16] = pack_float_L16;
1825 table[MESA_FORMAT_I8] = pack_float_L8; /* reuse pack_float_L8 */
1826 table[MESA_FORMAT_I16] = pack_float_L16; /* reuse pack_float_L16 */
1827 table[MESA_FORMAT_YCBCR] = pack_float_YCBCR;
1828 table[MESA_FORMAT_YCBCR_REV] = pack_float_YCBCR_REV;
1829 table[MESA_FORMAT_R8] = pack_float_R8;
1830 table[MESA_FORMAT_GR88] = pack_float_GR88;
1831 table[MESA_FORMAT_RG88] = pack_float_RG88;
1832 table[MESA_FORMAT_R16] = pack_float_R16;
1833 table[MESA_FORMAT_RG1616] = pack_float_RG1616;
1834 table[MESA_FORMAT_RG1616_REV] = pack_float_RG1616_REV;
1835 table[MESA_FORMAT_ARGB2101010] = pack_float_ARGB2101010;
1836
1837 /* should never convert RGBA to these formats */
1838 table[MESA_FORMAT_Z24_S8] = NULL;
1839 table[MESA_FORMAT_S8_Z24] = NULL;
1840 table[MESA_FORMAT_Z16] = NULL;
1841 table[MESA_FORMAT_X8_Z24] = NULL;
1842 table[MESA_FORMAT_Z24_X8] = NULL;
1843 table[MESA_FORMAT_Z32] = NULL;
1844 table[MESA_FORMAT_S8] = NULL;
1845
1846 table[MESA_FORMAT_SRGB8] = pack_float_SRGB8;
1847 table[MESA_FORMAT_SRGBA8] = pack_float_SRGBA8;
1848 table[MESA_FORMAT_SARGB8] = pack_float_SARGB8;
1849 table[MESA_FORMAT_SL8] = pack_float_SL8;
1850 table[MESA_FORMAT_SLA8] = pack_float_SLA8;
1851
1852 /* n/a */
1853 table[MESA_FORMAT_SRGB_DXT1] = NULL;
1854 table[MESA_FORMAT_SRGBA_DXT1] = NULL;
1855 table[MESA_FORMAT_SRGBA_DXT3] = NULL;
1856 table[MESA_FORMAT_SRGBA_DXT5] = NULL;
1857
1858 table[MESA_FORMAT_RGB_FXT1] = NULL;
1859 table[MESA_FORMAT_RGBA_FXT1] = NULL;
1860 table[MESA_FORMAT_RGB_DXT1] = NULL;
1861 table[MESA_FORMAT_RGBA_DXT1] = NULL;
1862 table[MESA_FORMAT_RGBA_DXT3] = NULL;
1863 table[MESA_FORMAT_RGBA_DXT5] = NULL;
1864
1865 table[MESA_FORMAT_RGBA_FLOAT32] = pack_float_RGBA_FLOAT32;
1866 table[MESA_FORMAT_RGBA_FLOAT16] = pack_float_RGBA_FLOAT16;
1867 table[MESA_FORMAT_RGB_FLOAT32] = pack_float_RGB_FLOAT32;
1868 table[MESA_FORMAT_RGB_FLOAT16] = pack_float_RGB_FLOAT16;
1869 table[MESA_FORMAT_ALPHA_FLOAT32] = pack_float_ALPHA_FLOAT32;
1870 table[MESA_FORMAT_ALPHA_FLOAT16] = pack_float_ALPHA_FLOAT16;
1871 table[MESA_FORMAT_LUMINANCE_FLOAT32] = pack_float_LUMINANCE_FLOAT32;
1872 table[MESA_FORMAT_LUMINANCE_FLOAT16] = pack_float_LUMINANCE_FLOAT16;
1873 table[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32] = pack_float_LUMINANCE_ALPHA_FLOAT32;
1874 table[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16] = pack_float_LUMINANCE_ALPHA_FLOAT16;
1875
1876 table[MESA_FORMAT_INTENSITY_FLOAT32] = pack_float_LUMINANCE_FLOAT32;
1877 table[MESA_FORMAT_INTENSITY_FLOAT16] = pack_float_LUMINANCE_FLOAT16;
1878 table[MESA_FORMAT_R_FLOAT32] = pack_float_LUMINANCE_FLOAT32;
1879 table[MESA_FORMAT_R_FLOAT16] = pack_float_LUMINANCE_FLOAT16;
1880 table[MESA_FORMAT_RG_FLOAT32] = pack_float_RG_FLOAT32;
1881 table[MESA_FORMAT_RG_FLOAT16] = pack_float_RG_FLOAT16;
1882
1883 /* n/a */
1884 table[MESA_FORMAT_RGBA_INT8] = NULL;
1885 table[MESA_FORMAT_RGBA_INT16] = NULL;
1886 table[MESA_FORMAT_RGBA_INT32] = NULL;
1887 table[MESA_FORMAT_RGBA_UINT8] = NULL;
1888 table[MESA_FORMAT_RGBA_UINT16] = NULL;
1889 table[MESA_FORMAT_RGBA_UINT32] = NULL;
1890
1891 table[MESA_FORMAT_DUDV8] = pack_float_DUDV8;
1892
1893 table[MESA_FORMAT_RGBA_16] = pack_float_RGBA_16;
1894
1895 table[MESA_FORMAT_SIGNED_R8] = pack_float_SIGNED_R8;
1896 table[MESA_FORMAT_SIGNED_RG88_REV] = pack_float_SIGNED_RG88_REV;
1897 table[MESA_FORMAT_SIGNED_RGBX8888] = pack_float_SIGNED_RGBX8888;
1898 table[MESA_FORMAT_SIGNED_RGBA8888] = pack_float_SIGNED_RGBA8888;
1899 table[MESA_FORMAT_SIGNED_RGBA8888_REV] = pack_float_SIGNED_RGBA8888_REV;
1900 table[MESA_FORMAT_SIGNED_R16] = pack_float_SIGNED_R16;
1901 table[MESA_FORMAT_SIGNED_GR1616] = pack_float_SIGNED_GR1616;
1902 table[MESA_FORMAT_SIGNED_RGB_16] = pack_float_SIGNED_RGB_16;
1903 table[MESA_FORMAT_SIGNED_RGBA_16] = pack_float_SIGNED_RGBA_16;
1904 table[MESA_FORMAT_SIGNED_A8] = pack_float_SIGNED_A8;
1905 table[MESA_FORMAT_SIGNED_L8] = pack_float_SIGNED_L8;
1906 table[MESA_FORMAT_SIGNED_AL88] = pack_float_SIGNED_AL88;
1907 table[MESA_FORMAT_SIGNED_I8] = pack_float_SIGNED_L8; /* reused */
1908 table[MESA_FORMAT_SIGNED_A16] = pack_float_SIGNED_A16;
1909 table[MESA_FORMAT_SIGNED_L16] = pack_float_SIGNED_L16;
1910 table[MESA_FORMAT_SIGNED_AL1616] = pack_float_SIGNED_AL1616;
1911 table[MESA_FORMAT_SIGNED_I16] = pack_float_SIGNED_L16; /* reused */
1912
1913 table[MESA_FORMAT_RGB9_E5_FLOAT] = pack_float_RGB9_E5_FLOAT;
1914 table[MESA_FORMAT_R11_G11_B10_FLOAT] = pack_float_R11_G11_B10_FLOAT;
1915
1916 initialized = GL_TRUE;
1917 }
1918
1919 return table[format];
1920 }
1921
1922
1923
1924 static pack_float_rgba_row_func
1925 get_pack_float_rgba_row_function(gl_format format)
1926 {
1927 static pack_float_rgba_row_func table[MESA_FORMAT_COUNT];
1928 static GLboolean initialized = GL_FALSE;
1929
1930 if (!initialized) {
1931 /* We don't need a special row packing function for each format.
1932 * There's a generic fallback which uses a per-pixel packing function.
1933 */
1934 memset(table, 0, sizeof(table));
1935
1936 table[MESA_FORMAT_RGBA8888] = pack_row_float_RGBA8888;
1937 table[MESA_FORMAT_RGBA8888_REV] = pack_row_float_RGBA8888_REV;
1938 table[MESA_FORMAT_ARGB8888] = pack_row_float_ARGB8888;
1939 table[MESA_FORMAT_ARGB8888_REV] = pack_row_float_ARGB8888_REV;
1940 table[MESA_FORMAT_RGBX8888] = pack_row_float_RGBA8888; /* reused */
1941 table[MESA_FORMAT_RGBX8888_REV] = pack_row_float_RGBA8888_REV; /* reused */
1942 table[MESA_FORMAT_XRGB8888] = pack_row_float_XRGB8888;
1943 table[MESA_FORMAT_XRGB8888_REV] = pack_row_float_XRGB8888_REV;
1944 table[MESA_FORMAT_RGB888] = pack_row_float_RGB888;
1945 table[MESA_FORMAT_BGR888] = pack_row_float_BGR888;
1946 table[MESA_FORMAT_RGB565] = pack_row_float_RGB565;
1947 table[MESA_FORMAT_RGB565_REV] = pack_row_float_RGB565_REV;
1948
1949 initialized = GL_TRUE;
1950 }
1951
1952 return table[format];
1953 }
1954
1955
1956
1957 static pack_ubyte_rgba_row_func
1958 get_pack_ubyte_rgba_row_function(gl_format format)
1959 {
1960 static pack_ubyte_rgba_row_func table[MESA_FORMAT_COUNT];
1961 static GLboolean initialized = GL_FALSE;
1962
1963 if (!initialized) {
1964 /* We don't need a special row packing function for each format.
1965 * There's a generic fallback which uses a per-pixel packing function.
1966 */
1967 memset(table, 0, sizeof(table));
1968
1969 table[MESA_FORMAT_RGBA8888] = pack_row_ubyte_RGBA8888;
1970 table[MESA_FORMAT_RGBA8888_REV] = pack_row_ubyte_RGBA8888_REV;
1971 table[MESA_FORMAT_ARGB8888] = pack_row_ubyte_ARGB8888;
1972 table[MESA_FORMAT_ARGB8888_REV] = pack_row_ubyte_ARGB8888_REV;
1973 table[MESA_FORMAT_RGBX8888] = pack_row_ubyte_RGBA8888; /* reused */
1974 table[MESA_FORMAT_RGBX8888_REV] = pack_row_ubyte_RGBA8888_REV; /* reused */
1975 table[MESA_FORMAT_XRGB8888] = pack_row_ubyte_XRGB8888;
1976 table[MESA_FORMAT_XRGB8888_REV] = pack_row_ubyte_XRGB8888_REV;
1977 table[MESA_FORMAT_RGB888] = pack_row_ubyte_RGB888;
1978 table[MESA_FORMAT_BGR888] = pack_row_ubyte_BGR888;
1979 table[MESA_FORMAT_RGB565] = pack_row_ubyte_RGB565;
1980 table[MESA_FORMAT_RGB565_REV] = pack_row_ubyte_RGB565_REV;
1981
1982 initialized = GL_TRUE;
1983 }
1984
1985 return table[format];
1986 }
1987
1988
1989
1990 /**
1991 * Pack a row of GLfloat rgba[4] values to the destination.
1992 */
1993 void
1994 _mesa_pack_float_rgba_row(gl_format format, GLuint n,
1995 const GLfloat src[][4], void *dst)
1996 {
1997 pack_float_rgba_row_func packrow = get_pack_float_rgba_row_function(format);
1998 if (packrow) {
1999 /* use "fast" function */
2000 packrow(n, src, dst);
2001 }
2002 else {
2003 /* slower fallback */
2004 gl_pack_float_rgba_func pack = _mesa_get_pack_float_rgba_function(format);
2005 GLuint dstStride = _mesa_get_format_bytes(format);
2006 GLubyte *dstPtr = (GLubyte *) dst;
2007 GLuint i;
2008
2009 assert(pack);
2010 if (!pack)
2011 return;
2012
2013 for (i = 0; i < n; i++) {
2014 pack(src[i], dstPtr);
2015 dstPtr += dstStride;
2016 }
2017 }
2018 }
2019
2020
2021 /**
2022 * Pack a row of GLubyte rgba[4] values to the destination.
2023 */
2024 void
2025 _mesa_pack_ubyte_rgba_row(gl_format format, GLuint n,
2026 const GLubyte src[][4], void *dst)
2027 {
2028 pack_ubyte_rgba_row_func packrow = get_pack_ubyte_rgba_row_function(format);
2029 if (packrow) {
2030 /* use "fast" function */
2031 packrow(n, src, dst);
2032 }
2033 else {
2034 /* slower fallback */
2035 gl_pack_ubyte_rgba_func pack = _mesa_get_pack_ubyte_rgba_function(format);
2036 const GLuint stride = _mesa_get_format_bytes(format);
2037 GLubyte *d = ((GLubyte *) dst);
2038 GLuint i;
2039
2040 assert(pack);
2041 if (!pack)
2042 return;
2043
2044 for (i = 0; i < n; i++) {
2045 pack(src[i], d);
2046 d += stride;
2047 }
2048 }
2049 }
2050
2051
2052 /**
2053 ** Pack float Z pixels
2054 **/
2055
2056 static void
2057 pack_float_z_Z24_S8(const GLfloat *src, void *dst)
2058 {
2059 /* don't disturb the stencil values */
2060 GLuint *d = ((GLuint *) dst);
2061 const GLdouble scale = (GLdouble) 0xffffff;
2062 GLuint s = *d & 0xff;
2063 GLuint z = (GLuint) (*src * scale);
2064 assert(z <= 0xffffff);
2065 *d = (z << 8) | s;
2066 }
2067
2068 static void
2069 pack_float_z_S8_Z24(const GLfloat *src, void *dst)
2070 {
2071 /* don't disturb the stencil values */
2072 GLuint *d = ((GLuint *) dst);
2073 const GLdouble scale = (GLdouble) 0xffffff;
2074 GLuint s = *d & 0xff000000;
2075 GLuint z = (GLuint) (*src * scale);
2076 assert(z <= 0xffffff);
2077 *d = s | z;
2078 }
2079
2080 static void
2081 pack_float_z_Z16(const GLfloat *src, void *dst)
2082 {
2083 GLushort *d = ((GLushort *) dst);
2084 const GLfloat scale = (GLfloat) 0xffff;
2085 *d = (GLushort) (*src * scale);
2086 }
2087
2088 static void
2089 pack_float_z_Z32(const GLfloat *src, void *dst)
2090 {
2091 GLuint *d = ((GLuint *) dst);
2092 const GLdouble scale = (GLdouble) 0xffffffff;
2093 *d = (GLuint) (*src * scale);
2094 }
2095
2096 static void
2097 pack_float_z_Z32_FLOAT(const GLfloat *src, void *dst)
2098 {
2099 GLfloat *d = (GLfloat *) dst;
2100 *d = *src;
2101 }
2102
2103 gl_pack_float_z_func
2104 _mesa_get_pack_float_z_func(gl_format format)
2105 {
2106 switch (format) {
2107 case MESA_FORMAT_Z24_S8:
2108 case MESA_FORMAT_Z24_X8:
2109 return pack_float_z_Z24_S8;
2110 case MESA_FORMAT_S8_Z24:
2111 case MESA_FORMAT_X8_Z24:
2112 return pack_float_z_S8_Z24;
2113 case MESA_FORMAT_Z16:
2114 return pack_float_z_Z16;
2115 case MESA_FORMAT_Z32:
2116 return pack_float_z_Z32;
2117 case MESA_FORMAT_Z32_FLOAT:
2118 case MESA_FORMAT_Z32_FLOAT_X24S8:
2119 return pack_float_z_Z32_FLOAT;
2120 default:
2121 _mesa_problem(NULL,
2122 "unexpected format in _mesa_get_pack_float_z_func()");
2123 return NULL;
2124 }
2125 }
2126
2127
2128
2129 /**
2130 ** Pack uint Z pixels. The incoming src value is always in
2131 ** the range [0, 2^32-1].
2132 **/
2133
2134 static void
2135 pack_uint_z_Z24_S8(const GLuint *src, void *dst)
2136 {
2137 /* don't disturb the stencil values */
2138 GLuint *d = ((GLuint *) dst);
2139 GLuint s = *d & 0xff;
2140 GLuint z = *src & 0xffffff00;
2141 *d = z | s;
2142 }
2143
2144 static void
2145 pack_uint_z_S8_Z24(const GLuint *src, void *dst)
2146 {
2147 /* don't disturb the stencil values */
2148 GLuint *d = ((GLuint *) dst);
2149 GLuint s = *d & 0xff000000;
2150 GLuint z = *src >> 8;
2151 *d = s | z;
2152 }
2153
2154 static void
2155 pack_uint_z_Z16(const GLuint *src, void *dst)
2156 {
2157 GLushort *d = ((GLushort *) dst);
2158 *d = *src >> 16;
2159 }
2160
2161 static void
2162 pack_uint_z_Z32(const GLuint *src, void *dst)
2163 {
2164 GLuint *d = ((GLuint *) dst);
2165 *d = *src;
2166 }
2167
2168 static void
2169 pack_uint_z_Z32_FLOAT(const GLuint *src, void *dst)
2170 {
2171 GLuint *d = ((GLuint *) dst);
2172 const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
2173 *d = *src * scale;
2174 assert(*d >= 0.0f);
2175 assert(*d <= 1.0f);
2176 }
2177
2178 static void
2179 pack_uint_z_Z32_FLOAT_X24S8(const GLuint *src, void *dst)
2180 {
2181 GLfloat *d = ((GLfloat *) dst);
2182 const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
2183 *d = *src * scale;
2184 assert(*d >= 0.0f);
2185 assert(*d <= 1.0f);
2186 }
2187
2188 gl_pack_uint_z_func
2189 _mesa_get_pack_uint_z_func(gl_format format)
2190 {
2191 switch (format) {
2192 case MESA_FORMAT_Z24_S8:
2193 case MESA_FORMAT_Z24_X8:
2194 return pack_uint_z_Z24_S8;
2195 case MESA_FORMAT_S8_Z24:
2196 case MESA_FORMAT_X8_Z24:
2197 return pack_uint_z_S8_Z24;
2198 case MESA_FORMAT_Z16:
2199 return pack_uint_z_Z16;
2200 case MESA_FORMAT_Z32:
2201 return pack_uint_z_Z32;
2202 case MESA_FORMAT_Z32_FLOAT:
2203 return pack_uint_z_Z32_FLOAT;
2204 case MESA_FORMAT_Z32_FLOAT_X24S8:
2205 return pack_uint_z_Z32_FLOAT_X24S8;
2206 default:
2207 _mesa_problem(NULL, "unexpected format in _mesa_get_pack_uint_z_func()");
2208 return NULL;
2209 }
2210 }
2211
2212
2213 /**
2214 ** Pack ubyte stencil pixels
2215 **/
2216
2217 static void
2218 pack_ubyte_stencil_Z24_S8(const GLubyte *src, void *dst)
2219 {
2220 /* don't disturb the Z values */
2221 GLuint *d = ((GLuint *) dst);
2222 GLuint s = *src;
2223 GLuint z = *d & 0xffffff00;
2224 *d = z | s;
2225 }
2226
2227 static void
2228 pack_ubyte_stencil_S8_Z24(const GLubyte *src, void *dst)
2229 {
2230 /* don't disturb the Z values */
2231 GLuint *d = ((GLuint *) dst);
2232 GLuint s = *src << 24;
2233 GLuint z = *d & 0xffffff;
2234 *d = s | z;
2235 }
2236
2237 static void
2238 pack_ubyte_stencil_S8(const GLubyte *src, void *dst)
2239 {
2240 GLubyte *d = (GLubyte *) dst;
2241 *d = *src;
2242 }
2243
2244 static void
2245 pack_ubyte_stencil_Z32_FLOAT_X24S8(const GLubyte *src, void *dst)
2246 {
2247 GLfloat *d = ((GLfloat *) dst);
2248 d[1] = *src;
2249 }
2250
2251
2252 gl_pack_ubyte_stencil_func
2253 _mesa_get_pack_ubyte_stencil_func(gl_format format)
2254 {
2255 switch (format) {
2256 case MESA_FORMAT_Z24_S8:
2257 return pack_ubyte_stencil_Z24_S8;
2258 case MESA_FORMAT_S8_Z24:
2259 return pack_ubyte_stencil_S8_Z24;
2260 case MESA_FORMAT_S8:
2261 return pack_ubyte_stencil_S8;
2262 case MESA_FORMAT_Z32_FLOAT_X24S8:
2263 return pack_ubyte_stencil_Z32_FLOAT_X24S8;
2264 default:
2265 _mesa_problem(NULL,
2266 "unexpected format in _mesa_pack_ubyte_stencil_func()");
2267 return NULL;
2268 }
2269 }
2270
2271
2272
2273 void
2274 _mesa_pack_float_z_row(gl_format format, GLuint n,
2275 const GLfloat *src, void *dst)
2276 {
2277 switch (format) {
2278 case MESA_FORMAT_Z24_S8:
2279 case MESA_FORMAT_Z24_X8:
2280 {
2281 /* don't disturb the stencil values */
2282 GLuint *d = ((GLuint *) dst);
2283 const GLdouble scale = (GLdouble) 0xffffff;
2284 GLuint i;
2285 for (i = 0; i < n; i++) {
2286 GLuint s = d[i] & 0xff;
2287 GLuint z = (GLuint) (src[i] * scale);
2288 assert(z <= 0xffffff);
2289 d[i] = (z << 8) | s;
2290 }
2291 }
2292 break;
2293 case MESA_FORMAT_S8_Z24:
2294 case MESA_FORMAT_X8_Z24:
2295 {
2296 /* don't disturb the stencil values */
2297 GLuint *d = ((GLuint *) dst);
2298 const GLdouble scale = (GLdouble) 0xffffff;
2299 GLuint i;
2300 for (i = 0; i < n; i++) {
2301 GLuint s = d[i] & 0xff000000;
2302 GLuint z = (GLuint) (src[i] * scale);
2303 assert(z <= 0xffffff);
2304 d[i] = s | z;
2305 }
2306 }
2307 break;
2308 case MESA_FORMAT_Z16:
2309 {
2310 GLushort *d = ((GLushort *) dst);
2311 const GLfloat scale = (GLfloat) 0xffff;
2312 GLuint i;
2313 for (i = 0; i < n; i++) {
2314 d[i] = (GLushort) (src[i] * scale);
2315 }
2316 }
2317 break;
2318 case MESA_FORMAT_Z32:
2319 {
2320 GLuint *d = ((GLuint *) dst);
2321 const GLdouble scale = (GLdouble) 0xffffffff;
2322 GLuint i;
2323 for (i = 0; i < n; i++) {
2324 d[i] = (GLuint) (src[i] * scale);
2325 }
2326 }
2327 break;
2328 case MESA_FORMAT_Z32_FLOAT:
2329 memcpy(dst, src, n * sizeof(GLfloat));
2330 break;
2331 case MESA_FORMAT_Z32_FLOAT_X24S8:
2332 {
2333 GLfloat *d = ((GLfloat *) dst);
2334 GLuint i;
2335 for (i = 0; i < n; i++) {
2336 d[i * 2] = src[i];
2337 }
2338 }
2339 break;
2340 default:
2341 _mesa_problem(NULL, "unexpected format in _mesa_pack_float_z_row()");
2342 }
2343 }
2344
2345
2346 /**
2347 * The incoming Z values are always in the range [0, 0xffffffff].
2348 */
2349 void
2350 _mesa_pack_uint_z_row(gl_format format, GLuint n,
2351 const GLuint *src, void *dst)
2352 {
2353 switch (format) {
2354 case MESA_FORMAT_Z24_S8:
2355 case MESA_FORMAT_Z24_X8:
2356 {
2357 /* don't disturb the stencil values */
2358 GLuint *d = ((GLuint *) dst);
2359 GLuint i;
2360 for (i = 0; i < n; i++) {
2361 GLuint s = d[i] & 0xff;
2362 GLuint z = src[i] & 0xffffff00;
2363 d[i] = z | s;
2364 }
2365 }
2366 break;
2367 case MESA_FORMAT_S8_Z24:
2368 case MESA_FORMAT_X8_Z24:
2369 {
2370 /* don't disturb the stencil values */
2371 GLuint *d = ((GLuint *) dst);
2372 GLuint i;
2373 for (i = 0; i < n; i++) {
2374 GLuint s = d[i] & 0xff000000;
2375 GLuint z = src[i] >> 8;
2376 d[i] = s | z;
2377 }
2378 }
2379 break;
2380 case MESA_FORMAT_Z16:
2381 {
2382 GLushort *d = ((GLushort *) dst);
2383 GLuint i;
2384 for (i = 0; i < n; i++) {
2385 d[i] = src[i] >> 16;
2386 }
2387 }
2388 break;
2389 case MESA_FORMAT_Z32:
2390 memcpy(dst, src, n * sizeof(GLfloat));
2391 break;
2392 case MESA_FORMAT_Z32_FLOAT:
2393 {
2394 GLuint *d = ((GLuint *) dst);
2395 const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
2396 GLuint i;
2397 for (i = 0; i < n; i++) {
2398 d[i] = src[i] * scale;
2399 assert(d[i] >= 0.0f);
2400 assert(d[i] <= 1.0f);
2401 }
2402 }
2403 break;
2404 case MESA_FORMAT_Z32_FLOAT_X24S8:
2405 {
2406 GLfloat *d = ((GLfloat *) dst);
2407 const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
2408 GLuint i;
2409 for (i = 0; i < n; i++) {
2410 d[i * 2] = src[i] * scale;
2411 assert(d[i * 2] >= 0.0f);
2412 assert(d[i * 2] <= 1.0f);
2413 }
2414 }
2415 break;
2416 default:
2417 _mesa_problem(NULL, "unexpected format in _mesa_pack_uint_z_row()");
2418 }
2419 }
2420
2421
2422 void
2423 _mesa_pack_ubyte_stencil_row(gl_format format, GLuint n,
2424 const GLubyte *src, void *dst)
2425 {
2426 switch (format) {
2427 case MESA_FORMAT_Z24_S8:
2428 {
2429 /* don't disturb the Z values */
2430 GLuint *d = ((GLuint *) dst);
2431 GLuint i;
2432 for (i = 0; i < n; i++) {
2433 GLuint s = src[i];
2434 GLuint z = d[i] & 0xffffff00;
2435 d[i] = z | s;
2436 }
2437 }
2438 break;
2439 case MESA_FORMAT_S8_Z24:
2440 {
2441 /* don't disturb the Z values */
2442 GLuint *d = ((GLuint *) dst);
2443 GLuint i;
2444 for (i = 0; i < n; i++) {
2445 GLuint s = src[i] << 24;
2446 GLuint z = d[i] & 0xffffff;
2447 d[i] = s | z;
2448 }
2449 }
2450 break;
2451 case MESA_FORMAT_S8:
2452 memcpy(dst, src, n * sizeof(GLubyte));
2453 break;
2454 case MESA_FORMAT_Z32_FLOAT_X24S8:
2455 {
2456 GLuint *d = dst;
2457 GLuint i;
2458 for (i = 0; i < n; i++) {
2459 d[i * 2 + 1] = src[i];
2460 }
2461 }
2462 break;
2463 default:
2464 _mesa_problem(NULL, "unexpected format in _mesa_pack_ubyte_stencil_row()");
2465 }
2466 }
2467
2468
2469 /**
2470 * Incoming Z/stencil values are always in uint_24_8 format.
2471 */
2472 void
2473 _mesa_pack_uint_24_8_depth_stencil_row(gl_format format, GLuint n,
2474 const GLuint *src, void *dst)
2475 {
2476 switch (format) {
2477 case MESA_FORMAT_Z24_S8:
2478 memcpy(dst, src, n * sizeof(GLuint));
2479 break;
2480 case MESA_FORMAT_S8_Z24:
2481 {
2482 GLuint *d = ((GLuint *) dst);
2483 GLuint i;
2484 for (i = 0; i < n; i++) {
2485 GLuint s = src[i] << 24;
2486 GLuint z = src[i] >> 8;
2487 d[i] = s | z;
2488 }
2489 }
2490 break;
2491 default:
2492 _mesa_problem(NULL, "bad format %s in _mesa_pack_ubyte_s_row",
2493 _mesa_get_format_name(format));
2494 return;
2495 }
2496 }
2497
2498
2499
2500 /**
2501 * Convert a boolean color mask to a packed color where each channel of
2502 * the packed value at dst will be 0 or ~0 depending on the colorMask.
2503 */
2504 void
2505 _mesa_pack_colormask(gl_format format, const GLubyte colorMask[4], void *dst)
2506 {
2507 GLfloat maskColor[4];
2508
2509 switch (_mesa_get_format_datatype(format)) {
2510 case GL_UNSIGNED_NORMALIZED:
2511 /* simple: 1.0 will convert to ~0 in the right bit positions */
2512 maskColor[0] = colorMask[0] ? 1.0 : 0.0;
2513 maskColor[1] = colorMask[1] ? 1.0 : 0.0;
2514 maskColor[2] = colorMask[2] ? 1.0 : 0.0;
2515 maskColor[3] = colorMask[3] ? 1.0 : 0.0;
2516 _mesa_pack_float_rgba_row(format, 1,
2517 (const GLfloat (*)[4]) maskColor, dst);
2518 break;
2519 case GL_SIGNED_NORMALIZED:
2520 case GL_FLOAT:
2521 /* These formats are harder because it's hard to know the floating
2522 * point values that will convert to ~0 for each color channel's bits.
2523 * This solution just generates a non-zero value for each color channel
2524 * then fixes up the non-zero values to be ~0.
2525 * Note: we'll need to add special case code if we ever have to deal
2526 * with formats with unequal color channel sizes, like R11_G11_B10.
2527 * We issue a warning below for channel sizes other than 8,16,32.
2528 */
2529 {
2530 GLuint bits = _mesa_get_format_max_bits(format); /* bits per chan */
2531 GLuint bytes = _mesa_get_format_bytes(format);
2532 GLuint i;
2533
2534 /* this should put non-zero values into the channels of dst */
2535 maskColor[0] = colorMask[0] ? -1.0f : 0.0f;
2536 maskColor[1] = colorMask[1] ? -1.0f : 0.0f;
2537 maskColor[2] = colorMask[2] ? -1.0f : 0.0f;
2538 maskColor[3] = colorMask[3] ? -1.0f : 0.0f;
2539 _mesa_pack_float_rgba_row(format, 1,
2540 (const GLfloat (*)[4]) maskColor, dst);
2541
2542 /* fix-up the dst channels by converting non-zero values to ~0 */
2543 if (bits == 8) {
2544 GLubyte *d = (GLubyte *) dst;
2545 for (i = 0; i < bytes; i++) {
2546 d[i] = d[i] ? 0xffff : 0x0;
2547 }
2548 }
2549 else if (bits == 16) {
2550 GLushort *d = (GLushort *) dst;
2551 for (i = 0; i < bytes / 2; i++) {
2552 d[i] = d[i] ? 0xffff : 0x0;
2553 }
2554 }
2555 else if (bits == 32) {
2556 GLuint *d = (GLuint *) dst;
2557 for (i = 0; i < bytes / 4; i++) {
2558 d[i] = d[i] ? 0xffffffffU : 0x0;
2559 }
2560 }
2561 else {
2562 _mesa_problem(NULL, "unexpected size in _mesa_pack_colormask()");
2563 return;
2564 }
2565 }
2566 break;
2567 default:
2568 _mesa_problem(NULL, "unexpected format data type in gen_color_mask()");
2569 return;
2570 }
2571 }