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[[MESA]
[reactos.git] / reactos / dll / opengl / mesa / src / mesa / main / formats.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.7
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008-2009 VMware, Inc.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include "imports.h"
28 #include "formats.h"
29 #include "mfeatures.h"
30 #include "macros.h"
31
32
33 /**
34 * Information about texture formats.
35 */
36 struct gl_format_info
37 {
38 gl_format Name;
39
40 /** text name for debugging */
41 const char *StrName;
42
43 /**
44 * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
45 * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
46 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL, GL_DUDV_ATI.
47 */
48 GLenum BaseFormat;
49
50 /**
51 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
52 * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
53 */
54 GLenum DataType;
55
56 GLubyte RedBits;
57 GLubyte GreenBits;
58 GLubyte BlueBits;
59 GLubyte AlphaBits;
60 GLubyte LuminanceBits;
61 GLubyte IntensityBits;
62 GLubyte IndexBits;
63 GLubyte DepthBits;
64 GLubyte StencilBits;
65
66 /**
67 * To describe compressed formats. If not compressed, Width=Height=1.
68 */
69 GLubyte BlockWidth, BlockHeight;
70 GLubyte BytesPerBlock;
71 };
72
73
74 /**
75 * Info about each format.
76 * These must be in the same order as the MESA_FORMAT_* enums so that
77 * we can do lookups without searching.
78 */
79 static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
80 {
81 {
82 MESA_FORMAT_NONE, /* Name */
83 "MESA_FORMAT_NONE", /* StrName */
84 GL_NONE, /* BaseFormat */
85 GL_NONE, /* DataType */
86 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
87 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
88 0, 0, 0 /* BlockWidth/Height,Bytes */
89 },
90 {
91 MESA_FORMAT_RGBA8888, /* Name */
92 "MESA_FORMAT_RGBA8888", /* StrName */
93 GL_RGBA, /* BaseFormat */
94 GL_UNSIGNED_NORMALIZED, /* DataType */
95 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
96 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
97 1, 1, 4 /* BlockWidth/Height,Bytes */
98 },
99 {
100 MESA_FORMAT_RGBA8888_REV, /* Name */
101 "MESA_FORMAT_RGBA8888_REV", /* StrName */
102 GL_RGBA, /* BaseFormat */
103 GL_UNSIGNED_NORMALIZED, /* DataType */
104 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
105 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
106 1, 1, 4 /* BlockWidth/Height,Bytes */
107 },
108 {
109 MESA_FORMAT_ARGB8888, /* Name */
110 "MESA_FORMAT_ARGB8888", /* StrName */
111 GL_RGBA, /* BaseFormat */
112 GL_UNSIGNED_NORMALIZED, /* DataType */
113 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
114 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
115 1, 1, 4 /* BlockWidth/Height,Bytes */
116 },
117 {
118 MESA_FORMAT_ARGB8888_REV, /* Name */
119 "MESA_FORMAT_ARGB8888_REV", /* StrName */
120 GL_RGBA, /* BaseFormat */
121 GL_UNSIGNED_NORMALIZED, /* DataType */
122 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
123 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
124 1, 1, 4 /* BlockWidth/Height,Bytes */
125 },
126 {
127 MESA_FORMAT_RGBX8888, /* Name */
128 "MESA_FORMAT_RGBX8888", /* StrName */
129 GL_RGB, /* BaseFormat */
130 GL_UNSIGNED_NORMALIZED, /* DataType */
131 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
132 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
133 1, 1, 4 /* BlockWidth/Height,Bytes */
134 },
135 {
136 MESA_FORMAT_RGBX8888_REV, /* Name */
137 "MESA_FORMAT_RGBX8888_REV", /* StrName */
138 GL_RGB, /* BaseFormat */
139 GL_UNSIGNED_NORMALIZED, /* DataType */
140 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
141 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
142 1, 1, 4 /* BlockWidth/Height,Bytes */
143 },
144 {
145 MESA_FORMAT_XRGB8888, /* Name */
146 "MESA_FORMAT_XRGB8888", /* StrName */
147 GL_RGB, /* BaseFormat */
148 GL_UNSIGNED_NORMALIZED, /* DataType */
149 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
150 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
151 1, 1, 4 /* BlockWidth/Height,Bytes */
152 },
153 {
154 MESA_FORMAT_XRGB8888_REV, /* Name */
155 "MESA_FORMAT_XRGB8888_REV", /* StrName */
156 GL_RGB, /* BaseFormat */
157 GL_UNSIGNED_NORMALIZED, /* DataType */
158 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
159 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
160 1, 1, 4 /* BlockWidth/Height,Bytes */
161 },
162 {
163 MESA_FORMAT_RGB888, /* Name */
164 "MESA_FORMAT_RGB888", /* StrName */
165 GL_RGB, /* BaseFormat */
166 GL_UNSIGNED_NORMALIZED, /* DataType */
167 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
168 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
169 1, 1, 3 /* BlockWidth/Height,Bytes */
170 },
171 {
172 MESA_FORMAT_BGR888, /* Name */
173 "MESA_FORMAT_BGR888", /* StrName */
174 GL_RGB, /* BaseFormat */
175 GL_UNSIGNED_NORMALIZED, /* DataType */
176 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
177 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
178 1, 1, 3 /* BlockWidth/Height,Bytes */
179 },
180 {
181 MESA_FORMAT_RGB565, /* Name */
182 "MESA_FORMAT_RGB565", /* StrName */
183 GL_RGB, /* BaseFormat */
184 GL_UNSIGNED_NORMALIZED, /* DataType */
185 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
186 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
187 1, 1, 2 /* BlockWidth/Height,Bytes */
188 },
189 {
190 MESA_FORMAT_RGB565_REV, /* Name */
191 "MESA_FORMAT_RGB565_REV", /* StrName */
192 GL_RGB, /* BaseFormat */
193 GL_UNSIGNED_NORMALIZED, /* DataType */
194 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
195 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
196 1, 1, 2 /* BlockWidth/Height,Bytes */
197 },
198 {
199 MESA_FORMAT_ARGB4444, /* Name */
200 "MESA_FORMAT_ARGB4444", /* StrName */
201 GL_RGBA, /* BaseFormat */
202 GL_UNSIGNED_NORMALIZED, /* DataType */
203 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
204 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
205 1, 1, 2 /* BlockWidth/Height,Bytes */
206 },
207 {
208 MESA_FORMAT_ARGB4444_REV, /* Name */
209 "MESA_FORMAT_ARGB4444_REV", /* StrName */
210 GL_RGBA, /* BaseFormat */
211 GL_UNSIGNED_NORMALIZED, /* DataType */
212 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
213 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
214 1, 1, 2 /* BlockWidth/Height,Bytes */
215 },
216 {
217 MESA_FORMAT_RGBA5551, /* Name */
218 "MESA_FORMAT_RGBA5551", /* StrName */
219 GL_RGBA, /* BaseFormat */
220 GL_UNSIGNED_NORMALIZED, /* DataType */
221 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
222 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
223 1, 1, 2 /* BlockWidth/Height,Bytes */
224 },
225 {
226 MESA_FORMAT_ARGB1555, /* Name */
227 "MESA_FORMAT_ARGB1555", /* StrName */
228 GL_RGBA, /* BaseFormat */
229 GL_UNSIGNED_NORMALIZED, /* DataType */
230 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
231 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
232 1, 1, 2 /* BlockWidth/Height,Bytes */
233 },
234 {
235 MESA_FORMAT_ARGB1555_REV, /* Name */
236 "MESA_FORMAT_ARGB1555_REV", /* StrName */
237 GL_RGBA, /* BaseFormat */
238 GL_UNSIGNED_NORMALIZED, /* DataType */
239 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
240 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
241 1, 1, 2 /* BlockWidth/Height,Bytes */
242 },
243 {
244 MESA_FORMAT_AL44, /* Name */
245 "MESA_FORMAT_AL44", /* StrName */
246 GL_LUMINANCE_ALPHA, /* BaseFormat */
247 GL_UNSIGNED_NORMALIZED, /* DataType */
248 0, 0, 0, 4, /* Red/Green/Blue/AlphaBits */
249 4, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
250 1, 1, 1 /* BlockWidth/Height,Bytes */
251 },
252 {
253 MESA_FORMAT_AL88, /* Name */
254 "MESA_FORMAT_AL88", /* StrName */
255 GL_LUMINANCE_ALPHA, /* BaseFormat */
256 GL_UNSIGNED_NORMALIZED, /* DataType */
257 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
258 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
259 1, 1, 2 /* BlockWidth/Height,Bytes */
260 },
261 {
262 MESA_FORMAT_AL88_REV, /* Name */
263 "MESA_FORMAT_AL88_REV", /* StrName */
264 GL_LUMINANCE_ALPHA, /* BaseFormat */
265 GL_UNSIGNED_NORMALIZED, /* DataType */
266 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
267 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
268 1, 1, 2 /* BlockWidth/Height,Bytes */
269 },
270 {
271 MESA_FORMAT_AL1616, /* Name */
272 "MESA_FORMAT_AL1616", /* StrName */
273 GL_LUMINANCE_ALPHA, /* BaseFormat */
274 GL_UNSIGNED_NORMALIZED, /* DataType */
275 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
276 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
277 1, 1, 4 /* BlockWidth/Height,Bytes */
278 },
279 {
280 MESA_FORMAT_AL1616_REV, /* Name */
281 "MESA_FORMAT_AL1616_REV", /* StrName */
282 GL_LUMINANCE_ALPHA, /* BaseFormat */
283 GL_UNSIGNED_NORMALIZED, /* DataType */
284 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
285 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
286 1, 1, 4 /* BlockWidth/Height,Bytes */
287 },
288 {
289 MESA_FORMAT_RGB332, /* Name */
290 "MESA_FORMAT_RGB332", /* StrName */
291 GL_RGB, /* BaseFormat */
292 GL_UNSIGNED_NORMALIZED, /* DataType */
293 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
294 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
295 1, 1, 1 /* BlockWidth/Height,Bytes */
296 },
297 {
298 MESA_FORMAT_A8, /* Name */
299 "MESA_FORMAT_A8", /* StrName */
300 GL_ALPHA, /* BaseFormat */
301 GL_UNSIGNED_NORMALIZED, /* DataType */
302 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
303 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
304 1, 1, 1 /* BlockWidth/Height,Bytes */
305 },
306 {
307 MESA_FORMAT_A16, /* Name */
308 "MESA_FORMAT_A16", /* StrName */
309 GL_ALPHA, /* BaseFormat */
310 GL_UNSIGNED_NORMALIZED, /* DataType */
311 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
312 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
313 1, 1, 2 /* BlockWidth/Height,Bytes */
314 },
315 {
316 MESA_FORMAT_L8, /* Name */
317 "MESA_FORMAT_L8", /* StrName */
318 GL_LUMINANCE, /* BaseFormat */
319 GL_UNSIGNED_NORMALIZED, /* DataType */
320 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
321 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
322 1, 1, 1 /* BlockWidth/Height,Bytes */
323 },
324 {
325 MESA_FORMAT_L16, /* Name */
326 "MESA_FORMAT_L16", /* StrName */
327 GL_LUMINANCE, /* BaseFormat */
328 GL_UNSIGNED_NORMALIZED, /* DataType */
329 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
330 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
331 1, 1, 2 /* BlockWidth/Height,Bytes */
332 },
333 {
334 MESA_FORMAT_I8, /* Name */
335 "MESA_FORMAT_I8", /* StrName */
336 GL_INTENSITY, /* BaseFormat */
337 GL_UNSIGNED_NORMALIZED, /* DataType */
338 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
339 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
340 1, 1, 1 /* BlockWidth/Height,Bytes */
341 },
342 {
343 MESA_FORMAT_I16, /* Name */
344 "MESA_FORMAT_I16", /* StrName */
345 GL_INTENSITY, /* BaseFormat */
346 GL_UNSIGNED_NORMALIZED, /* DataType */
347 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
348 0, 16, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
349 1, 1, 2 /* BlockWidth/Height,Bytes */
350 },
351 {
352 MESA_FORMAT_YCBCR, /* Name */
353 "MESA_FORMAT_YCBCR", /* StrName */
354 GL_YCBCR_MESA, /* BaseFormat */
355 GL_UNSIGNED_NORMALIZED, /* DataType */
356 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
357 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
358 1, 1, 2 /* BlockWidth/Height,Bytes */
359 },
360 {
361 MESA_FORMAT_YCBCR_REV, /* Name */
362 "MESA_FORMAT_YCBCR_REV", /* StrName */
363 GL_YCBCR_MESA, /* BaseFormat */
364 GL_UNSIGNED_NORMALIZED, /* DataType */
365 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
366 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
367 1, 1, 2 /* BlockWidth/Height,Bytes */
368 },
369 {
370 MESA_FORMAT_R8,
371 "MESA_FORMAT_R8",
372 GL_RED,
373 GL_UNSIGNED_NORMALIZED,
374 8, 0, 0, 0,
375 0, 0, 0, 0, 0,
376 1, 1, 1
377 },
378 {
379 MESA_FORMAT_GR88,
380 "MESA_FORMAT_GR88",
381 GL_RG,
382 GL_UNSIGNED_NORMALIZED,
383 8, 8, 0, 0,
384 0, 0, 0, 0, 0,
385 1, 1, 2
386 },
387 {
388 MESA_FORMAT_RG88,
389 "MESA_FORMAT_RG88",
390 GL_RG,
391 GL_UNSIGNED_NORMALIZED,
392 8, 8, 0, 0,
393 0, 0, 0, 0, 0,
394 1, 1, 2
395 },
396 {
397 MESA_FORMAT_R16,
398 "MESA_FORMAT_R16",
399 GL_RED,
400 GL_UNSIGNED_NORMALIZED,
401 16, 0, 0, 0,
402 0, 0, 0, 0, 0,
403 1, 1, 2
404 },
405 {
406 MESA_FORMAT_RG1616,
407 "MESA_FORMAT_RG1616",
408 GL_RG,
409 GL_UNSIGNED_NORMALIZED,
410 16, 16, 0, 0,
411 0, 0, 0, 0, 0,
412 1, 1, 4
413 },
414 {
415 MESA_FORMAT_RG1616_REV,
416 "MESA_FORMAT_RG1616_REV",
417 GL_RG,
418 GL_UNSIGNED_NORMALIZED,
419 16, 16, 0, 0,
420 0, 0, 0, 0, 0,
421 1, 1, 4
422 },
423 {
424 MESA_FORMAT_ARGB2101010,
425 "MESA_FORMAT_ARGB2101010",
426 GL_RGBA,
427 GL_UNSIGNED_NORMALIZED,
428 10, 10, 10, 2,
429 0, 0, 0, 0, 0,
430 1, 1, 4
431 },
432 {
433 MESA_FORMAT_Z24_S8, /* Name */
434 "MESA_FORMAT_Z24_S8", /* StrName */
435 GL_DEPTH_STENCIL, /* BaseFormat */
436 GL_UNSIGNED_NORMALIZED, /* DataType */
437 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
438 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
439 1, 1, 4 /* BlockWidth/Height,Bytes */
440 },
441 {
442 MESA_FORMAT_S8_Z24, /* Name */
443 "MESA_FORMAT_S8_Z24", /* StrName */
444 GL_DEPTH_STENCIL, /* BaseFormat */
445 GL_UNSIGNED_NORMALIZED, /* DataType */
446 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
447 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
448 1, 1, 4 /* BlockWidth/Height,Bytes */
449 },
450 {
451 MESA_FORMAT_Z16, /* Name */
452 "MESA_FORMAT_Z16", /* StrName */
453 GL_DEPTH_COMPONENT, /* BaseFormat */
454 GL_UNSIGNED_NORMALIZED, /* DataType */
455 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
456 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
457 1, 1, 2 /* BlockWidth/Height,Bytes */
458 },
459 {
460 MESA_FORMAT_X8_Z24, /* Name */
461 "MESA_FORMAT_X8_Z24", /* StrName */
462 GL_DEPTH_COMPONENT, /* BaseFormat */
463 GL_UNSIGNED_NORMALIZED, /* DataType */
464 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
465 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
466 1, 1, 4 /* BlockWidth/Height,Bytes */
467 },
468 {
469 MESA_FORMAT_Z24_X8, /* Name */
470 "MESA_FORMAT_Z24_X8", /* StrName */
471 GL_DEPTH_COMPONENT, /* BaseFormat */
472 GL_UNSIGNED_NORMALIZED, /* DataType */
473 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
474 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
475 1, 1, 4 /* BlockWidth/Height,Bytes */
476 },
477 {
478 MESA_FORMAT_Z32, /* Name */
479 "MESA_FORMAT_Z32", /* StrName */
480 GL_DEPTH_COMPONENT, /* BaseFormat */
481 GL_UNSIGNED_NORMALIZED, /* DataType */
482 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
483 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
484 1, 1, 4 /* BlockWidth/Height,Bytes */
485 },
486 {
487 MESA_FORMAT_S8, /* Name */
488 "MESA_FORMAT_S8", /* StrName */
489 GL_STENCIL_INDEX, /* BaseFormat */
490 GL_UNSIGNED_INT, /* DataType */
491 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
492 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
493 1, 1, 1 /* BlockWidth/Height,Bytes */
494 },
495 {
496 MESA_FORMAT_SRGB8,
497 "MESA_FORMAT_SRGB8",
498 GL_RGB,
499 GL_UNSIGNED_NORMALIZED,
500 8, 8, 8, 0,
501 0, 0, 0, 0, 0,
502 1, 1, 3
503 },
504 {
505 MESA_FORMAT_SRGBA8,
506 "MESA_FORMAT_SRGBA8",
507 GL_RGBA,
508 GL_UNSIGNED_NORMALIZED,
509 8, 8, 8, 8,
510 0, 0, 0, 0, 0,
511 1, 1, 4
512 },
513 {
514 MESA_FORMAT_SARGB8,
515 "MESA_FORMAT_SARGB8",
516 GL_RGBA,
517 GL_UNSIGNED_NORMALIZED,
518 8, 8, 8, 8,
519 0, 0, 0, 0, 0,
520 1, 1, 4
521 },
522 {
523 MESA_FORMAT_SL8,
524 "MESA_FORMAT_SL8",
525 GL_LUMINANCE,
526 GL_UNSIGNED_NORMALIZED,
527 0, 0, 0, 0,
528 8, 0, 0, 0, 0,
529 1, 1, 1
530 },
531 {
532 MESA_FORMAT_SLA8,
533 "MESA_FORMAT_SLA8",
534 GL_LUMINANCE_ALPHA,
535 GL_UNSIGNED_NORMALIZED,
536 0, 0, 0, 8,
537 8, 0, 0, 0, 0,
538 1, 1, 2
539 },
540 {
541 MESA_FORMAT_SRGB_DXT1, /* Name */
542 "MESA_FORMAT_SRGB_DXT1", /* StrName */
543 GL_RGB, /* BaseFormat */
544 GL_UNSIGNED_NORMALIZED, /* DataType */
545 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
546 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
547 4, 4, 8 /* 8 bytes per 4x4 block */
548 },
549 {
550 MESA_FORMAT_SRGBA_DXT1,
551 "MESA_FORMAT_SRGBA_DXT1",
552 GL_RGBA,
553 GL_UNSIGNED_NORMALIZED,
554 4, 4, 4, 4,
555 0, 0, 0, 0, 0,
556 4, 4, 8 /* 8 bytes per 4x4 block */
557 },
558 {
559 MESA_FORMAT_SRGBA_DXT3,
560 "MESA_FORMAT_SRGBA_DXT3",
561 GL_RGBA,
562 GL_UNSIGNED_NORMALIZED,
563 4, 4, 4, 4,
564 0, 0, 0, 0, 0,
565 4, 4, 16 /* 16 bytes per 4x4 block */
566 },
567 {
568 MESA_FORMAT_SRGBA_DXT5,
569 "MESA_FORMAT_SRGBA_DXT5",
570 GL_RGBA,
571 GL_UNSIGNED_NORMALIZED,
572 4, 4, 4, 4,
573 0, 0, 0, 0, 0,
574 4, 4, 16 /* 16 bytes per 4x4 block */
575 },
576
577 {
578 MESA_FORMAT_RGB_FXT1,
579 "MESA_FORMAT_RGB_FXT1",
580 GL_RGB,
581 GL_UNSIGNED_NORMALIZED,
582 4, 4, 4, 0, /* approx Red/Green/BlueBits */
583 0, 0, 0, 0, 0,
584 8, 4, 16 /* 16 bytes per 8x4 block */
585 },
586 {
587 MESA_FORMAT_RGBA_FXT1,
588 "MESA_FORMAT_RGBA_FXT1",
589 GL_RGBA,
590 GL_UNSIGNED_NORMALIZED,
591 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
592 0, 0, 0, 0, 0,
593 8, 4, 16 /* 16 bytes per 8x4 block */
594 },
595
596 {
597 MESA_FORMAT_RGB_DXT1, /* Name */
598 "MESA_FORMAT_RGB_DXT1", /* StrName */
599 GL_RGB, /* BaseFormat */
600 GL_UNSIGNED_NORMALIZED, /* DataType */
601 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
602 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
603 4, 4, 8 /* 8 bytes per 4x4 block */
604 },
605 {
606 MESA_FORMAT_RGBA_DXT1,
607 "MESA_FORMAT_RGBA_DXT1",
608 GL_RGBA,
609 GL_UNSIGNED_NORMALIZED,
610 4, 4, 4, 4,
611 0, 0, 0, 0, 0,
612 4, 4, 8 /* 8 bytes per 4x4 block */
613 },
614 {
615 MESA_FORMAT_RGBA_DXT3,
616 "MESA_FORMAT_RGBA_DXT3",
617 GL_RGBA,
618 GL_UNSIGNED_NORMALIZED,
619 4, 4, 4, 4,
620 0, 0, 0, 0, 0,
621 4, 4, 16 /* 16 bytes per 4x4 block */
622 },
623 {
624 MESA_FORMAT_RGBA_DXT5,
625 "MESA_FORMAT_RGBA_DXT5",
626 GL_RGBA,
627 GL_UNSIGNED_NORMALIZED,
628 4, 4, 4, 4,
629 0, 0, 0, 0, 0,
630 4, 4, 16 /* 16 bytes per 4x4 block */
631 },
632 {
633 MESA_FORMAT_RGBA_FLOAT32,
634 "MESA_FORMAT_RGBA_FLOAT32",
635 GL_RGBA,
636 GL_FLOAT,
637 32, 32, 32, 32,
638 0, 0, 0, 0, 0,
639 1, 1, 16
640 },
641 {
642 MESA_FORMAT_RGBA_FLOAT16,
643 "MESA_FORMAT_RGBA_FLOAT16",
644 GL_RGBA,
645 GL_FLOAT,
646 16, 16, 16, 16,
647 0, 0, 0, 0, 0,
648 1, 1, 8
649 },
650 {
651 MESA_FORMAT_RGB_FLOAT32,
652 "MESA_FORMAT_RGB_FLOAT32",
653 GL_RGB,
654 GL_FLOAT,
655 32, 32, 32, 0,
656 0, 0, 0, 0, 0,
657 1, 1, 12
658 },
659 {
660 MESA_FORMAT_RGB_FLOAT16,
661 "MESA_FORMAT_RGB_FLOAT16",
662 GL_RGB,
663 GL_FLOAT,
664 16, 16, 16, 0,
665 0, 0, 0, 0, 0,
666 1, 1, 6
667 },
668 {
669 MESA_FORMAT_ALPHA_FLOAT32,
670 "MESA_FORMAT_ALPHA_FLOAT32",
671 GL_ALPHA,
672 GL_FLOAT,
673 0, 0, 0, 32,
674 0, 0, 0, 0, 0,
675 1, 1, 4
676 },
677 {
678 MESA_FORMAT_ALPHA_FLOAT16,
679 "MESA_FORMAT_ALPHA_FLOAT16",
680 GL_ALPHA,
681 GL_FLOAT,
682 0, 0, 0, 16,
683 0, 0, 0, 0, 0,
684 1, 1, 2
685 },
686 {
687 MESA_FORMAT_LUMINANCE_FLOAT32,
688 "MESA_FORMAT_LUMINANCE_FLOAT32",
689 GL_LUMINANCE,
690 GL_FLOAT,
691 0, 0, 0, 0,
692 32, 0, 0, 0, 0,
693 1, 1, 4
694 },
695 {
696 MESA_FORMAT_LUMINANCE_FLOAT16,
697 "MESA_FORMAT_LUMINANCE_FLOAT16",
698 GL_LUMINANCE,
699 GL_FLOAT,
700 0, 0, 0, 0,
701 16, 0, 0, 0, 0,
702 1, 1, 2
703 },
704 {
705 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
706 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
707 GL_LUMINANCE_ALPHA,
708 GL_FLOAT,
709 0, 0, 0, 32,
710 32, 0, 0, 0, 0,
711 1, 1, 8
712 },
713 {
714 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
715 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
716 GL_LUMINANCE_ALPHA,
717 GL_FLOAT,
718 0, 0, 0, 16,
719 16, 0, 0, 0, 0,
720 1, 1, 4
721 },
722 {
723 MESA_FORMAT_INTENSITY_FLOAT32,
724 "MESA_FORMAT_INTENSITY_FLOAT32",
725 GL_INTENSITY,
726 GL_FLOAT,
727 0, 0, 0, 0,
728 0, 32, 0, 0, 0,
729 1, 1, 4
730 },
731 {
732 MESA_FORMAT_INTENSITY_FLOAT16,
733 "MESA_FORMAT_INTENSITY_FLOAT16",
734 GL_INTENSITY,
735 GL_FLOAT,
736 0, 0, 0, 0,
737 0, 16, 0, 0, 0,
738 1, 1, 2
739 },
740 {
741 MESA_FORMAT_R_FLOAT32,
742 "MESA_FORMAT_R_FLOAT32",
743 GL_RED,
744 GL_FLOAT,
745 32, 0, 0, 0,
746 0, 0, 0, 0, 0,
747 1, 1, 4
748 },
749 {
750 MESA_FORMAT_R_FLOAT16,
751 "MESA_FORMAT_R_FLOAT16",
752 GL_RED,
753 GL_FLOAT,
754 16, 0, 0, 0,
755 0, 0, 0, 0, 0,
756 1, 1, 2
757 },
758 {
759 MESA_FORMAT_RG_FLOAT32,
760 "MESA_FORMAT_RG_FLOAT32",
761 GL_RG,
762 GL_FLOAT,
763 32, 32, 0, 0,
764 0, 0, 0, 0, 0,
765 1, 1, 8
766 },
767 {
768 MESA_FORMAT_RG_FLOAT16,
769 "MESA_FORMAT_RG_FLOAT16",
770 GL_RG,
771 GL_FLOAT,
772 16, 16, 0, 0,
773 0, 0, 0, 0, 0,
774 1, 1, 4
775 },
776
777 /* unnormalized signed int formats */
778 /* unnormalized unsigned int formats */
779 {
780 MESA_FORMAT_ALPHA_UINT8,
781 "MESA_FORMAT_ALPHA_UINT8",
782 GL_ALPHA,
783 GL_UNSIGNED_INT,
784 0, 0, 0, 8,
785 0, 0, 0, 0, 0,
786 1, 1, 1
787 },
788 {
789 MESA_FORMAT_ALPHA_UINT16,
790 "MESA_FORMAT_ALPHA_UINT16",
791 GL_ALPHA,
792 GL_UNSIGNED_INT,
793 0, 0, 0, 16,
794 0, 0, 0, 0, 0,
795 1, 1, 2
796 },
797 {
798 MESA_FORMAT_ALPHA_UINT32,
799 "MESA_FORMAT_ALPHA_UINT32",
800 GL_ALPHA,
801 GL_UNSIGNED_INT,
802 0, 0, 0, 32,
803 0, 0, 0, 0, 0,
804 1, 1, 4
805 },
806 {
807 MESA_FORMAT_ALPHA_INT8,
808 "MESA_FORMAT_ALPHA_INT8",
809 GL_ALPHA,
810 GL_INT,
811 0, 0, 0, 8,
812 0, 0, 0, 0, 0,
813 1, 1, 1
814 },
815 {
816 MESA_FORMAT_ALPHA_INT16,
817 "MESA_FORMAT_ALPHA_INT16",
818 GL_ALPHA,
819 GL_INT,
820 0, 0, 0, 16,
821 0, 0, 0, 0, 0,
822 1, 1, 2
823 },
824 {
825 MESA_FORMAT_ALPHA_INT32,
826 "MESA_FORMAT_ALPHA_INT32",
827 GL_ALPHA,
828 GL_INT,
829 0, 0, 0, 32,
830 0, 0, 0, 0, 0,
831 1, 1, 4
832 },
833 {
834 MESA_FORMAT_INTENSITY_UINT8,
835 "MESA_FORMAT_INTENSITY_UINT8",
836 GL_INTENSITY,
837 GL_UNSIGNED_INT,
838 0, 0, 0, 0,
839 0, 8, 0, 0, 0,
840 1, 1, 1
841 },
842 {
843 MESA_FORMAT_INTENSITY_UINT16,
844 "MESA_FORMAT_INTENSITY_UINT16",
845 GL_INTENSITY,
846 GL_UNSIGNED_INT,
847 0, 0, 0, 0,
848 0, 16, 0, 0, 0,
849 1, 1, 2
850 },
851 {
852 MESA_FORMAT_INTENSITY_UINT32,
853 "MESA_FORMAT_INTENSITY_UINT32",
854 GL_INTENSITY,
855 GL_UNSIGNED_INT,
856 0, 0, 0, 0,
857 0, 32, 0, 0, 0,
858 1, 1, 4
859 },
860 {
861 MESA_FORMAT_INTENSITY_INT8,
862 "MESA_FORMAT_INTENSITY_INT8",
863 GL_INTENSITY,
864 GL_INT,
865 0, 0, 0, 0,
866 0, 8, 0, 0, 0,
867 1, 1, 1
868 },
869 {
870 MESA_FORMAT_INTENSITY_INT16,
871 "MESA_FORMAT_INTENSITY_INT16",
872 GL_INTENSITY,
873 GL_INT,
874 0, 0, 0, 0,
875 0, 16, 0, 0, 0,
876 1, 1, 2
877 },
878 {
879 MESA_FORMAT_INTENSITY_INT32,
880 "MESA_FORMAT_INTENSITY_INT32",
881 GL_INTENSITY,
882 GL_INT,
883 0, 0, 0, 0,
884 0, 32, 0, 0, 0,
885 1, 1, 4
886 },
887 {
888 MESA_FORMAT_LUMINANCE_UINT8,
889 "MESA_FORMAT_LUMINANCE_UINT8",
890 GL_LUMINANCE,
891 GL_UNSIGNED_INT,
892 0, 0, 0, 0,
893 8, 0, 0, 0, 0,
894 1, 1, 1
895 },
896 {
897 MESA_FORMAT_LUMINANCE_UINT16,
898 "MESA_FORMAT_LUMINANCE_UINT16",
899 GL_LUMINANCE,
900 GL_UNSIGNED_INT,
901 0, 0, 0, 0,
902 16, 0, 0, 0, 0,
903 1, 1, 2
904 },
905 {
906 MESA_FORMAT_LUMINANCE_UINT32,
907 "MESA_FORMAT_LUMINANCE_UINT32",
908 GL_LUMINANCE,
909 GL_UNSIGNED_INT,
910 0, 0, 0, 0,
911 32, 0, 0, 0, 0,
912 1, 1, 4
913 },
914 {
915 MESA_FORMAT_LUMINANCE_INT8,
916 "MESA_FORMAT_LUMINANCE_INT8",
917 GL_LUMINANCE,
918 GL_INT,
919 0, 0, 0, 0,
920 8, 0, 0, 0, 0,
921 1, 1, 1
922 },
923 {
924 MESA_FORMAT_LUMINANCE_INT16,
925 "MESA_FORMAT_LUMINANCE_INT16",
926 GL_LUMINANCE,
927 GL_INT,
928 0, 0, 0, 0,
929 16, 0, 0, 0, 0,
930 1, 1, 2
931 },
932 {
933 MESA_FORMAT_LUMINANCE_INT32,
934 "MESA_FORMAT_LUMINANCE_INT32",
935 GL_LUMINANCE,
936 GL_INT,
937 0, 0, 0, 0,
938 32, 0, 0, 0, 0,
939 1, 1, 4
940 },
941 {
942 MESA_FORMAT_LUMINANCE_ALPHA_UINT8,
943 "MESA_FORMAT_LUMINANCE_ALPHA_UINT8",
944 GL_LUMINANCE_ALPHA,
945 GL_UNSIGNED_INT,
946 0, 0, 0, 8,
947 8, 0, 0, 0, 0,
948 1, 1, 2
949 },
950 {
951 MESA_FORMAT_LUMINANCE_ALPHA_UINT16,
952 "MESA_FORMAT_LUMINANCE_ALPHA_UINT16",
953 GL_LUMINANCE_ALPHA,
954 GL_UNSIGNED_INT,
955 0, 0, 0, 16,
956 16, 0, 0, 0, 0,
957 1, 1, 4
958 },
959 {
960 MESA_FORMAT_LUMINANCE_ALPHA_UINT32,
961 "MESA_FORMAT_LUMINANCE_ALPHA_UINT32",
962 GL_LUMINANCE_ALPHA,
963 GL_UNSIGNED_INT,
964 0, 0, 0, 32,
965 32, 0, 0, 0, 0,
966 1, 1, 8
967 },
968 {
969 MESA_FORMAT_LUMINANCE_ALPHA_INT8,
970 "MESA_FORMAT_LUMINANCE_ALPHA_INT8",
971 GL_LUMINANCE_ALPHA,
972 GL_INT,
973 0, 0, 0, 8,
974 8, 0, 0, 0, 0,
975 1, 1, 2
976 },
977 {
978 MESA_FORMAT_LUMINANCE_ALPHA_INT16,
979 "MESA_FORMAT_LUMINANCE_ALPHA_INT16",
980 GL_LUMINANCE_ALPHA,
981 GL_INT,
982 0, 0, 0, 16,
983 16, 0, 0, 0, 0,
984 1, 1, 4
985 },
986 {
987 MESA_FORMAT_LUMINANCE_ALPHA_INT32,
988 "MESA_FORMAT_LUMINANCE_ALPHA_INT32",
989 GL_LUMINANCE_ALPHA,
990 GL_INT,
991 0, 0, 0, 32,
992 32, 0, 0, 0, 0,
993 1, 1, 8
994 },
995
996 {
997 MESA_FORMAT_R_INT8,
998 "MESA_FORMAT_R_INT8",
999 GL_RED,
1000 GL_INT,
1001 8, 0, 0, 0,
1002 0, 0, 0, 0, 0,
1003 1, 1, 1
1004 },
1005 {
1006 MESA_FORMAT_RG_INT8,
1007 "MESA_FORMAT_RG_INT8",
1008 GL_RG,
1009 GL_INT,
1010 8, 8, 0, 0,
1011 0, 0, 0, 0, 0,
1012 1, 1, 2
1013 },
1014 {
1015 MESA_FORMAT_RGB_INT8,
1016 "MESA_FORMAT_RGB_INT8",
1017 GL_RGB,
1018 GL_INT,
1019 8, 8, 8, 0,
1020 0, 0, 0, 0, 0,
1021 1, 1, 3
1022 },
1023 {
1024 MESA_FORMAT_RGBA_INT8,
1025 "MESA_FORMAT_RGBA_INT8",
1026 GL_RGBA,
1027 GL_INT,
1028 8, 8, 8, 8,
1029 0, 0, 0, 0, 0,
1030 1, 1, 4
1031 },
1032 {
1033 MESA_FORMAT_R_INT16,
1034 "MESA_FORMAT_R_INT16",
1035 GL_RED,
1036 GL_INT,
1037 16, 0, 0, 0,
1038 0, 0, 0, 0, 0,
1039 1, 1, 2
1040 },
1041 {
1042 MESA_FORMAT_RG_INT16,
1043 "MESA_FORMAT_RG_INT16",
1044 GL_RG,
1045 GL_INT,
1046 16, 16, 0, 0,
1047 0, 0, 0, 0, 0,
1048 1, 1, 4
1049 },
1050 {
1051 MESA_FORMAT_RGB_INT16,
1052 "MESA_FORMAT_RGB_INT16",
1053 GL_RGB,
1054 GL_INT,
1055 16, 16, 16, 0,
1056 0, 0, 0, 0, 0,
1057 1, 1, 6
1058 },
1059 {
1060 MESA_FORMAT_RGBA_INT16,
1061 "MESA_FORMAT_RGBA_INT16",
1062 GL_RGBA,
1063 GL_INT,
1064 16, 16, 16, 16,
1065 0, 0, 0, 0, 0,
1066 1, 1, 8
1067 },
1068 {
1069 MESA_FORMAT_R_INT32,
1070 "MESA_FORMAT_R_INT32",
1071 GL_RED,
1072 GL_INT,
1073 32, 0, 0, 0,
1074 0, 0, 0, 0, 0,
1075 1, 1, 4
1076 },
1077 {
1078 MESA_FORMAT_RG_INT32,
1079 "MESA_FORMAT_RG_INT32",
1080 GL_RG,
1081 GL_INT,
1082 32, 32, 0, 0,
1083 0, 0, 0, 0, 0,
1084 1, 1, 8
1085 },
1086 {
1087 MESA_FORMAT_RGB_INT32,
1088 "MESA_FORMAT_RGB_INT32",
1089 GL_RGB,
1090 GL_INT,
1091 32, 32, 32, 0,
1092 0, 0, 0, 0, 0,
1093 1, 1, 12
1094 },
1095 {
1096 MESA_FORMAT_RGBA_INT32,
1097 "MESA_FORMAT_RGBA_INT32",
1098 GL_RGBA,
1099 GL_INT,
1100 32, 32, 32, 32,
1101 0, 0, 0, 0, 0,
1102 1, 1, 16
1103 },
1104 {
1105 MESA_FORMAT_R_UINT8,
1106 "MESA_FORMAT_R_UINT8",
1107 GL_RED,
1108 GL_UNSIGNED_INT,
1109 8, 0, 0, 0,
1110 0, 0, 0, 0, 0,
1111 1, 1, 1
1112 },
1113 {
1114 MESA_FORMAT_RG_UINT8,
1115 "MESA_FORMAT_RG_UINT8",
1116 GL_RG,
1117 GL_UNSIGNED_INT,
1118 8, 8, 0, 0,
1119 0, 0, 0, 0, 0,
1120 1, 1, 2
1121 },
1122 {
1123 MESA_FORMAT_RGB_UINT8,
1124 "MESA_FORMAT_RGB_UINT8",
1125 GL_RGB,
1126 GL_UNSIGNED_INT,
1127 8, 8, 8, 0,
1128 0, 0, 0, 0, 0,
1129 1, 1, 3
1130 },
1131 {
1132 MESA_FORMAT_RGBA_UINT8,
1133 "MESA_FORMAT_RGBA_UINT8",
1134 GL_RGBA,
1135 GL_UNSIGNED_INT,
1136 8, 8, 8, 8,
1137 0, 0, 0, 0, 0,
1138 1, 1, 4
1139 },
1140 {
1141 MESA_FORMAT_R_UINT16,
1142 "MESA_FORMAT_R_UINT16",
1143 GL_RED,
1144 GL_UNSIGNED_INT,
1145 16, 0, 0, 0,
1146 0, 0, 0, 0, 0,
1147 1, 1, 2
1148 },
1149 {
1150 MESA_FORMAT_RG_UINT16,
1151 "MESA_FORMAT_RG_UINT16",
1152 GL_RG,
1153 GL_UNSIGNED_INT,
1154 16, 16, 0, 0,
1155 0, 0, 0, 0, 0,
1156 1, 1, 4
1157 },
1158 {
1159 MESA_FORMAT_RGB_UINT16,
1160 "MESA_FORMAT_RGB_UINT16",
1161 GL_RGB,
1162 GL_UNSIGNED_INT,
1163 16, 16, 16, 0,
1164 0, 0, 0, 0, 0,
1165 1, 1, 6
1166 },
1167 {
1168 MESA_FORMAT_RGBA_UINT16,
1169 "MESA_FORMAT_RGBA_UINT16",
1170 GL_RGBA,
1171 GL_UNSIGNED_INT,
1172 16, 16, 16, 16,
1173 0, 0, 0, 0, 0,
1174 1, 1, 8
1175 },
1176 {
1177 MESA_FORMAT_R_UINT32,
1178 "MESA_FORMAT_R_UINT32",
1179 GL_RED,
1180 GL_UNSIGNED_INT,
1181 32, 0, 0, 0,
1182 0, 0, 0, 0, 0,
1183 1, 1, 4
1184 },
1185 {
1186 MESA_FORMAT_RG_UINT32,
1187 "MESA_FORMAT_RG_UINT32",
1188 GL_RG,
1189 GL_UNSIGNED_INT,
1190 32, 32, 0, 0,
1191 0, 0, 0, 0, 0,
1192 1, 1, 8
1193 },
1194 {
1195 MESA_FORMAT_RGB_UINT32,
1196 "MESA_FORMAT_RGB_UINT32",
1197 GL_RGB,
1198 GL_UNSIGNED_INT,
1199 32, 32, 32, 0,
1200 0, 0, 0, 0, 0,
1201 1, 1, 12
1202 },
1203 {
1204 MESA_FORMAT_RGBA_UINT32,
1205 "MESA_FORMAT_RGBA_UINT32",
1206 GL_RGBA,
1207 GL_UNSIGNED_INT,
1208 32, 32, 32, 32,
1209 0, 0, 0, 0, 0,
1210 1, 1, 16
1211 },
1212
1213
1214 {
1215 MESA_FORMAT_DUDV8,
1216 "MESA_FORMAT_DUDV8",
1217 GL_DUDV_ATI,
1218 GL_SIGNED_NORMALIZED,
1219 0, 0, 0, 0,
1220 0, 0, 0, 0, 0,
1221 1, 1, 2
1222 },
1223
1224 /* Signed 8 bits / channel */
1225 {
1226 MESA_FORMAT_SIGNED_R8, /* Name */
1227 "MESA_FORMAT_SIGNED_R8", /* StrName */
1228 GL_RED, /* BaseFormat */
1229 GL_SIGNED_NORMALIZED, /* DataType */
1230 8, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1231 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
1232 1, 1, 1 /* BlockWidth/Height,Bytes */
1233 },
1234 {
1235 MESA_FORMAT_SIGNED_RG88_REV,
1236 "MESA_FORMAT_SIGNED_RG88_REV",
1237 GL_RG,
1238 GL_SIGNED_NORMALIZED,
1239 8, 8, 0, 0,
1240 0, 0, 0, 0, 0,
1241 1, 1, 2
1242 },
1243 {
1244 MESA_FORMAT_SIGNED_RGBX8888,
1245 "MESA_FORMAT_SIGNED_RGBX8888",
1246 GL_RGB,
1247 GL_SIGNED_NORMALIZED,
1248 8, 8, 8, 0,
1249 0, 0, 0, 0, 0,
1250 1, 1, 4 /* 4 bpp, but no alpha */
1251 },
1252 {
1253 MESA_FORMAT_SIGNED_RGBA8888,
1254 "MESA_FORMAT_SIGNED_RGBA8888",
1255 GL_RGBA,
1256 GL_SIGNED_NORMALIZED,
1257 8, 8, 8, 8,
1258 0, 0, 0, 0, 0,
1259 1, 1, 4
1260 },
1261 {
1262 MESA_FORMAT_SIGNED_RGBA8888_REV,
1263 "MESA_FORMAT_SIGNED_RGBA8888_REV",
1264 GL_RGBA,
1265 GL_SIGNED_NORMALIZED,
1266 8, 8, 8, 8,
1267 0, 0, 0, 0, 0,
1268 1, 1, 4
1269 },
1270
1271 /* Signed 16 bits / channel */
1272 {
1273 MESA_FORMAT_SIGNED_R16,
1274 "MESA_FORMAT_SIGNED_R16",
1275 GL_RED,
1276 GL_SIGNED_NORMALIZED,
1277 16, 0, 0, 0,
1278 0, 0, 0, 0, 0,
1279 1, 1, 2
1280 },
1281 {
1282 MESA_FORMAT_SIGNED_GR1616,
1283 "MESA_FORMAT_SIGNED_GR1616",
1284 GL_RG,
1285 GL_SIGNED_NORMALIZED,
1286 16, 16, 0, 0,
1287 0, 0, 0, 0, 0,
1288 1, 1, 4
1289 },
1290 {
1291 MESA_FORMAT_SIGNED_RGB_16,
1292 "MESA_FORMAT_SIGNED_RGB_16",
1293 GL_RGB,
1294 GL_SIGNED_NORMALIZED,
1295 16, 16, 16, 0,
1296 0, 0, 0, 0, 0,
1297 1, 1, 6
1298 },
1299 {
1300 MESA_FORMAT_SIGNED_RGBA_16,
1301 "MESA_FORMAT_SIGNED_RGBA_16",
1302 GL_RGBA,
1303 GL_SIGNED_NORMALIZED,
1304 16, 16, 16, 16,
1305 0, 0, 0, 0, 0,
1306 1, 1, 8
1307 },
1308 {
1309 MESA_FORMAT_RGBA_16,
1310 "MESA_FORMAT_RGBA_16",
1311 GL_RGBA,
1312 GL_UNSIGNED_NORMALIZED,
1313 16, 16, 16, 16,
1314 0, 0, 0, 0, 0,
1315 1, 1, 8
1316 },
1317 {
1318 MESA_FORMAT_RED_RGTC1,
1319 "MESA_FORMAT_RED_RGTC1",
1320 GL_RED,
1321 GL_UNSIGNED_NORMALIZED,
1322 4, 0, 0, 0,
1323 0, 0, 0, 0, 0,
1324 4, 4, 8 /* 8 bytes per 4x4 block */
1325 },
1326 {
1327 MESA_FORMAT_SIGNED_RED_RGTC1,
1328 "MESA_FORMAT_SIGNED_RED_RGTC1",
1329 GL_RED,
1330 GL_SIGNED_NORMALIZED,
1331 4, 0, 0, 0,
1332 0, 0, 0, 0, 0,
1333 4, 4, 8 /* 8 bytes per 4x4 block */
1334 },
1335 {
1336 MESA_FORMAT_RG_RGTC2,
1337 "MESA_FORMAT_RG_RGTC2",
1338 GL_RG,
1339 GL_UNSIGNED_NORMALIZED,
1340 4, 4, 0, 0,
1341 0, 0, 0, 0, 0,
1342 4, 4, 16 /* 16 bytes per 4x4 block */
1343 },
1344 {
1345 MESA_FORMAT_SIGNED_RG_RGTC2,
1346 "MESA_FORMAT_SIGNED_RG_RGTC2",
1347 GL_RG,
1348 GL_SIGNED_NORMALIZED,
1349 4, 4, 0, 0,
1350 0, 0, 0, 0, 0,
1351 4, 4, 16 /* 16 bytes per 4x4 block */
1352 },
1353 {
1354 MESA_FORMAT_L_LATC1,
1355 "MESA_FORMAT_L_LATC1",
1356 GL_LUMINANCE,
1357 GL_UNSIGNED_NORMALIZED,
1358 0, 0, 0, 0,
1359 4, 0, 0, 0, 0,
1360 4, 4, 8 /* 8 bytes per 4x4 block */
1361 },
1362 {
1363 MESA_FORMAT_SIGNED_L_LATC1,
1364 "MESA_FORMAT_SIGNED_L_LATC1",
1365 GL_LUMINANCE,
1366 GL_SIGNED_NORMALIZED,
1367 0, 0, 0, 0,
1368 4, 0, 0, 0, 0,
1369 4, 4, 8 /* 8 bytes per 4x4 block */
1370 },
1371 {
1372 MESA_FORMAT_LA_LATC2,
1373 "MESA_FORMAT_LA_LATC2",
1374 GL_LUMINANCE_ALPHA,
1375 GL_UNSIGNED_NORMALIZED,
1376 0, 0, 0, 4,
1377 4, 0, 0, 0, 0,
1378 4, 4, 16 /* 16 bytes per 4x4 block */
1379 },
1380 {
1381 MESA_FORMAT_SIGNED_LA_LATC2,
1382 "MESA_FORMAT_SIGNED_LA_LATC2",
1383 GL_LUMINANCE_ALPHA,
1384 GL_SIGNED_NORMALIZED,
1385 0, 0, 0, 4,
1386 4, 0, 0, 0, 0,
1387 4, 4, 16 /* 16 bytes per 4x4 block */
1388 },
1389
1390 /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
1391 {
1392 MESA_FORMAT_SIGNED_A8,
1393 "MESA_FORMAT_SIGNED_A8",
1394 GL_ALPHA,
1395 GL_SIGNED_NORMALIZED,
1396 0, 0, 0, 8,
1397 0, 0, 0, 0, 0,
1398 1, 1, 1
1399 },
1400 {
1401 MESA_FORMAT_SIGNED_L8,
1402 "MESA_FORMAT_SIGNED_L8",
1403 GL_LUMINANCE,
1404 GL_SIGNED_NORMALIZED,
1405 0, 0, 0, 0,
1406 8, 0, 0, 0, 0,
1407 1, 1, 1
1408 },
1409 {
1410 MESA_FORMAT_SIGNED_AL88,
1411 "MESA_FORMAT_SIGNED_AL88",
1412 GL_LUMINANCE_ALPHA,
1413 GL_SIGNED_NORMALIZED,
1414 0, 0, 0, 8,
1415 8, 0, 0, 0, 0,
1416 1, 1, 2
1417 },
1418 {
1419 MESA_FORMAT_SIGNED_I8,
1420 "MESA_FORMAT_SIGNED_I8",
1421 GL_INTENSITY,
1422 GL_SIGNED_NORMALIZED,
1423 0, 0, 0, 0,
1424 0, 8, 0, 0, 0,
1425 1, 1, 1
1426 },
1427 {
1428 MESA_FORMAT_SIGNED_A16,
1429 "MESA_FORMAT_SIGNED_A16",
1430 GL_ALPHA,
1431 GL_SIGNED_NORMALIZED,
1432 0, 0, 0, 16,
1433 0, 0, 0, 0, 0,
1434 1, 1, 2
1435 },
1436 {
1437 MESA_FORMAT_SIGNED_L16,
1438 "MESA_FORMAT_SIGNED_L16",
1439 GL_LUMINANCE,
1440 GL_SIGNED_NORMALIZED,
1441 0, 0, 0, 0,
1442 16, 0, 0, 0, 0,
1443 1, 1, 2
1444 },
1445 {
1446 MESA_FORMAT_SIGNED_AL1616,
1447 "MESA_FORMAT_SIGNED_AL1616",
1448 GL_LUMINANCE_ALPHA,
1449 GL_SIGNED_NORMALIZED,
1450 0, 0, 0, 16,
1451 16, 0, 0, 0, 0,
1452 1, 1, 4
1453 },
1454 {
1455 MESA_FORMAT_SIGNED_I16,
1456 "MESA_FORMAT_SIGNED_I16",
1457 GL_INTENSITY,
1458 GL_SIGNED_NORMALIZED,
1459 0, 0, 0, 0,
1460 0, 16, 0, 0, 0,
1461 1, 1, 2
1462 },
1463 /* ARB_depth_buffer_float */
1464 {
1465 MESA_FORMAT_Z32_FLOAT, /* Name */
1466 "MESA_FORMAT_Z32_FLOAT", /* StrName */
1467 GL_DEPTH_COMPONENT, /* BaseFormat */
1468 GL_FLOAT, /* DataType */
1469 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1470 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
1471 1, 1, 4 /* BlockWidth/Height,Bytes */
1472 },
1473 {
1474 MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
1475 "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
1476 GL_DEPTH_STENCIL, /* BaseFormat */
1477 /* DataType here is used to answer GL_TEXTURE_DEPTH_TYPE queries, and is
1478 * never used for stencil because stencil is always GL_UNSIGNED_INT.
1479 */
1480 GL_FLOAT, /* DataType */
1481 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1482 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
1483 1, 1, 8 /* BlockWidth/Height,Bytes */
1484 }
1485 };
1486
1487
1488
1489 static const struct gl_format_info *
1490 _mesa_get_format_info(gl_format format)
1491 {
1492 const struct gl_format_info *info = &format_info[format];
1493 assert(info->Name == format);
1494 return info;
1495 }
1496
1497
1498 /** Return string name of format (for debugging) */
1499 const char *
1500 _mesa_get_format_name(gl_format format)
1501 {
1502 const struct gl_format_info *info = _mesa_get_format_info(format);
1503 return info->StrName;
1504 }
1505
1506
1507
1508 /**
1509 * Return bytes needed to store a block of pixels in the given format.
1510 * Normally, a block is 1x1 (a single pixel). But for compressed formats
1511 * a block may be 4x4 or 8x4, etc.
1512 *
1513 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
1514 */
1515 GLint
1516 _mesa_get_format_bytes(gl_format format)
1517 {
1518 const struct gl_format_info *info = _mesa_get_format_info(format);
1519 ASSERT(info->BytesPerBlock);
1520 ASSERT(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
1521 _mesa_is_format_compressed(format));
1522 return info->BytesPerBlock;
1523 }
1524
1525
1526 /**
1527 * Return bits per component for the given format.
1528 * \param format one of MESA_FORMAT_x
1529 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
1530 */
1531 GLint
1532 _mesa_get_format_bits(gl_format format, GLenum pname)
1533 {
1534 const struct gl_format_info *info = _mesa_get_format_info(format);
1535
1536 switch (pname) {
1537 case GL_RED_BITS:
1538 case GL_TEXTURE_RED_SIZE:
1539 case GL_RENDERBUFFER_RED_SIZE_EXT:
1540 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1541 return info->RedBits;
1542 case GL_GREEN_BITS:
1543 case GL_TEXTURE_GREEN_SIZE:
1544 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1545 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1546 return info->GreenBits;
1547 case GL_BLUE_BITS:
1548 case GL_TEXTURE_BLUE_SIZE:
1549 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1550 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1551 return info->BlueBits;
1552 case GL_ALPHA_BITS:
1553 case GL_TEXTURE_ALPHA_SIZE:
1554 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1555 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1556 return info->AlphaBits;
1557 case GL_TEXTURE_INTENSITY_SIZE:
1558 return info->IntensityBits;
1559 case GL_TEXTURE_LUMINANCE_SIZE:
1560 return info->LuminanceBits;
1561 case GL_INDEX_BITS:
1562 return info->IndexBits;
1563 case GL_DEPTH_BITS:
1564 case GL_TEXTURE_DEPTH_SIZE_ARB:
1565 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1566 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1567 return info->DepthBits;
1568 case GL_STENCIL_BITS:
1569 case GL_TEXTURE_STENCIL_SIZE_EXT:
1570 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1571 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1572 return info->StencilBits;
1573 default:
1574 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
1575 return 0;
1576 }
1577 }
1578
1579
1580 GLuint
1581 _mesa_get_format_max_bits(gl_format format)
1582 {
1583 const struct gl_format_info *info = _mesa_get_format_info(format);
1584 GLuint max = MAX2(info->RedBits, info->GreenBits);
1585 max = MAX2(max, info->BlueBits);
1586 max = MAX2(max, info->AlphaBits);
1587 max = MAX2(max, info->LuminanceBits);
1588 max = MAX2(max, info->IntensityBits);
1589 max = MAX2(max, info->DepthBits);
1590 max = MAX2(max, info->StencilBits);
1591 return max;
1592 }
1593
1594
1595 /**
1596 * Return the data type (or more specifically, the data representation)
1597 * for the given format.
1598 * The return value will be one of:
1599 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
1600 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
1601 * GL_UNSIGNED_INT = an ordinary unsigned integer
1602 * GL_INT = an ordinary signed integer
1603 * GL_FLOAT = an ordinary float
1604 */
1605 GLenum
1606 _mesa_get_format_datatype(gl_format format)
1607 {
1608 const struct gl_format_info *info = _mesa_get_format_info(format);
1609 return info->DataType;
1610 }
1611
1612
1613 /**
1614 * Return the basic format for the given type. The result will be one of
1615 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
1616 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
1617 */
1618 GLenum
1619 _mesa_get_format_base_format(gl_format format)
1620 {
1621 const struct gl_format_info *info = _mesa_get_format_info(format);
1622 return info->BaseFormat;
1623 }
1624
1625
1626 /**
1627 * Return the block size (in pixels) for the given format. Normally
1628 * the block size is 1x1. But compressed formats will have block sizes
1629 * of 4x4 or 8x4 pixels, etc.
1630 * \param bw returns block width in pixels
1631 * \param bh returns block height in pixels
1632 */
1633 void
1634 _mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
1635 {
1636 const struct gl_format_info *info = _mesa_get_format_info(format);
1637 *bw = info->BlockWidth;
1638 *bh = info->BlockHeight;
1639 }
1640
1641
1642 /** Is the given format a compressed format? */
1643 GLboolean
1644 _mesa_is_format_compressed(gl_format format)
1645 {
1646 const struct gl_format_info *info = _mesa_get_format_info(format);
1647 return info->BlockWidth > 1 || info->BlockHeight > 1;
1648 }
1649
1650
1651 /**
1652 * Determine if the given format represents a packed depth/stencil buffer.
1653 */
1654 GLboolean
1655 _mesa_is_format_packed_depth_stencil(gl_format format)
1656 {
1657 const struct gl_format_info *info = _mesa_get_format_info(format);
1658
1659 return info->BaseFormat == GL_DEPTH_STENCIL;
1660 }
1661
1662
1663 /**
1664 * Is the given format a signed/unsigned integer color format?
1665 */
1666 GLboolean
1667 _mesa_is_format_integer_color(gl_format format)
1668 {
1669 const struct gl_format_info *info = _mesa_get_format_info(format);
1670 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
1671 info->BaseFormat != GL_DEPTH_COMPONENT &&
1672 info->BaseFormat != GL_DEPTH_STENCIL &&
1673 info->BaseFormat != GL_STENCIL_INDEX;
1674 }
1675
1676
1677 /**
1678 * Return color encoding for given format.
1679 * \return GL_LINEAR or GL_SRGB
1680 */
1681 GLenum
1682 _mesa_get_format_color_encoding(gl_format format)
1683 {
1684 /* XXX this info should be encoded in gl_format_info */
1685 switch (format) {
1686 case MESA_FORMAT_SRGB8:
1687 case MESA_FORMAT_SRGBA8:
1688 case MESA_FORMAT_SARGB8:
1689 case MESA_FORMAT_SL8:
1690 case MESA_FORMAT_SLA8:
1691 case MESA_FORMAT_SRGB_DXT1:
1692 case MESA_FORMAT_SRGBA_DXT1:
1693 case MESA_FORMAT_SRGBA_DXT3:
1694 case MESA_FORMAT_SRGBA_DXT5:
1695 return GL_SRGB;
1696 default:
1697 return GL_LINEAR;
1698 }
1699 }
1700
1701
1702 /**
1703 * For an sRGB format, return the corresponding linear color space format.
1704 * For non-sRGB formats, return the format as-is.
1705 */
1706 gl_format
1707 _mesa_get_srgb_format_linear(gl_format format)
1708 {
1709 switch (format) {
1710 case MESA_FORMAT_SRGB8:
1711 format = MESA_FORMAT_RGB888;
1712 break;
1713 case MESA_FORMAT_SRGBA8:
1714 format = MESA_FORMAT_RGBA8888;
1715 break;
1716 case MESA_FORMAT_SARGB8:
1717 format = MESA_FORMAT_ARGB8888;
1718 break;
1719 case MESA_FORMAT_SL8:
1720 format = MESA_FORMAT_L8;
1721 break;
1722 case MESA_FORMAT_SLA8:
1723 format = MESA_FORMAT_AL88;
1724 break;
1725 case MESA_FORMAT_SRGB_DXT1:
1726 format = MESA_FORMAT_RGB_DXT1;
1727 break;
1728 case MESA_FORMAT_SRGBA_DXT1:
1729 format = MESA_FORMAT_RGBA_DXT1;
1730 break;
1731 case MESA_FORMAT_SRGBA_DXT3:
1732 format = MESA_FORMAT_RGBA_DXT3;
1733 break;
1734 case MESA_FORMAT_SRGBA_DXT5:
1735 format = MESA_FORMAT_RGBA_DXT5;
1736 break;
1737 default:
1738 break;
1739 }
1740 return format;
1741 }
1742
1743
1744 /**
1745 * If the given format is a compressed format, return a corresponding
1746 * uncompressed format.
1747 */
1748 gl_format
1749 _mesa_get_uncompressed_format(gl_format format)
1750 {
1751 switch (format) {
1752 case MESA_FORMAT_RGB_FXT1:
1753 return MESA_FORMAT_RGB888;
1754 case MESA_FORMAT_RGBA_FXT1:
1755 return MESA_FORMAT_RGBA8888;
1756 case MESA_FORMAT_RGB_DXT1:
1757 case MESA_FORMAT_SRGB_DXT1:
1758 return MESA_FORMAT_RGB888;
1759 case MESA_FORMAT_RGBA_DXT1:
1760 case MESA_FORMAT_SRGBA_DXT1:
1761 return MESA_FORMAT_RGBA8888;
1762 case MESA_FORMAT_RGBA_DXT3:
1763 case MESA_FORMAT_SRGBA_DXT3:
1764 return MESA_FORMAT_RGBA8888;
1765 case MESA_FORMAT_RGBA_DXT5:
1766 case MESA_FORMAT_SRGBA_DXT5:
1767 return MESA_FORMAT_RGBA8888;
1768 case MESA_FORMAT_RED_RGTC1:
1769 return MESA_FORMAT_R8;
1770 case MESA_FORMAT_SIGNED_RED_RGTC1:
1771 return MESA_FORMAT_SIGNED_R8;
1772 case MESA_FORMAT_RG_RGTC2:
1773 return MESA_FORMAT_GR88;
1774 case MESA_FORMAT_SIGNED_RG_RGTC2:
1775 return MESA_FORMAT_SIGNED_RG88_REV;
1776 case MESA_FORMAT_L_LATC1:
1777 return MESA_FORMAT_L8;
1778 case MESA_FORMAT_SIGNED_L_LATC1:
1779 return MESA_FORMAT_SIGNED_L8;
1780 case MESA_FORMAT_LA_LATC2:
1781 return MESA_FORMAT_AL88;
1782 case MESA_FORMAT_SIGNED_LA_LATC2:
1783 return MESA_FORMAT_SIGNED_AL88;
1784 default:
1785 #ifdef DEBUG
1786 assert(!_mesa_is_format_compressed(format));
1787 #endif
1788 return format;
1789 }
1790 }
1791
1792
1793 GLuint
1794 _mesa_format_num_components(gl_format format)
1795 {
1796 const struct gl_format_info *info = _mesa_get_format_info(format);
1797 return ((info->RedBits > 0) +
1798 (info->GreenBits > 0) +
1799 (info->BlueBits > 0) +
1800 (info->AlphaBits > 0) +
1801 (info->LuminanceBits > 0) +
1802 (info->IntensityBits > 0) +
1803 (info->DepthBits > 0) +
1804 (info->StencilBits > 0));
1805 }
1806
1807
1808 /**
1809 * Return number of bytes needed to store an image of the given size
1810 * in the given format.
1811 */
1812 GLuint
1813 _mesa_format_image_size(gl_format format, GLsizei width,
1814 GLsizei height, GLsizei depth)
1815 {
1816 const struct gl_format_info *info = _mesa_get_format_info(format);
1817 /* Strictly speaking, a conditional isn't needed here */
1818 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1819 /* compressed format (2D only for now) */
1820 const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
1821 const GLuint wblocks = (width + bw - 1) / bw;
1822 const GLuint hblocks = (height + bh - 1) / bh;
1823 const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
1824 assert(depth == 1);
1825 return sz;
1826 }
1827 else {
1828 /* non-compressed */
1829 const GLuint sz = width * height * depth * info->BytesPerBlock;
1830 return sz;
1831 }
1832 }
1833
1834
1835 /**
1836 * Same as _mesa_format_image_size() but returns a 64-bit value to
1837 * accomodate very large textures.
1838 */
1839 uint64_t
1840 _mesa_format_image_size64(gl_format format, GLsizei width,
1841 GLsizei height, GLsizei depth)
1842 {
1843 const struct gl_format_info *info = _mesa_get_format_info(format);
1844 /* Strictly speaking, a conditional isn't needed here */
1845 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1846 /* compressed format (2D only for now) */
1847 const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
1848 const uint64_t wblocks = (width + bw - 1) / bw;
1849 const uint64_t hblocks = (height + bh - 1) / bh;
1850 const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
1851 assert(depth == 1);
1852 return sz;
1853 }
1854 else {
1855 /* non-compressed */
1856 const uint64_t sz = ((uint64_t) width *
1857 (uint64_t) height *
1858 (uint64_t) depth *
1859 info->BytesPerBlock);
1860 return sz;
1861 }
1862 }
1863
1864
1865
1866 GLint
1867 _mesa_format_row_stride(gl_format format, GLsizei width)
1868 {
1869 const struct gl_format_info *info = _mesa_get_format_info(format);
1870 /* Strictly speaking, a conditional isn't needed here */
1871 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1872 /* compressed format */
1873 const GLuint bw = info->BlockWidth;
1874 const GLuint wblocks = (width + bw - 1) / bw;
1875 const GLint stride = wblocks * info->BytesPerBlock;
1876 return stride;
1877 }
1878 else {
1879 const GLint stride = width * info->BytesPerBlock;
1880 return stride;
1881 }
1882 }
1883
1884
1885 /**
1886 * Debug/test: check that all formats are handled in the
1887 * _mesa_format_to_type_and_comps() function. When new pixel formats
1888 * are added to Mesa, that function needs to be updated.
1889 * This is a no-op after the first call.
1890 */
1891 static void
1892 check_format_to_type_and_comps(void)
1893 {
1894 gl_format f;
1895
1896 for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
1897 GLenum datatype = 0;
1898 GLuint comps = 0;
1899 /* This function will emit a problem/warning if the format is
1900 * not handled.
1901 */
1902 _mesa_format_to_type_and_comps(f, &datatype, &comps);
1903 }
1904 }
1905
1906
1907 /**
1908 * Do sanity checking of the format info table.
1909 */
1910 void
1911 _mesa_test_formats(void)
1912 {
1913 GLuint i;
1914
1915 STATIC_ASSERT(Elements(format_info) == MESA_FORMAT_COUNT);
1916
1917 for (i = 0; i < MESA_FORMAT_COUNT; i++) {
1918 const struct gl_format_info *info = _mesa_get_format_info(i);
1919 assert(info);
1920
1921 assert(info->Name == i);
1922
1923 if (info->Name == MESA_FORMAT_NONE)
1924 continue;
1925
1926 if (info->BlockWidth == 1 && info->BlockHeight == 1) {
1927 if (info->RedBits > 0) {
1928 GLuint t = info->RedBits + info->GreenBits
1929 + info->BlueBits + info->AlphaBits;
1930 assert(t / 8 <= info->BytesPerBlock);
1931 (void) t;
1932 }
1933 }
1934
1935 assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
1936 info->DataType == GL_SIGNED_NORMALIZED ||
1937 info->DataType == GL_UNSIGNED_INT ||
1938 info->DataType == GL_INT ||
1939 info->DataType == GL_FLOAT ||
1940 /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
1941 info->DataType == GL_NONE);
1942
1943 if (info->BaseFormat == GL_RGB) {
1944 assert(info->RedBits > 0);
1945 assert(info->GreenBits > 0);
1946 assert(info->BlueBits > 0);
1947 assert(info->AlphaBits == 0);
1948 assert(info->LuminanceBits == 0);
1949 assert(info->IntensityBits == 0);
1950 }
1951 else if (info->BaseFormat == GL_RGBA) {
1952 assert(info->RedBits > 0);
1953 assert(info->GreenBits > 0);
1954 assert(info->BlueBits > 0);
1955 assert(info->AlphaBits > 0);
1956 assert(info->LuminanceBits == 0);
1957 assert(info->IntensityBits == 0);
1958 }
1959 else if (info->BaseFormat == GL_RG) {
1960 assert(info->RedBits > 0);
1961 assert(info->GreenBits > 0);
1962 assert(info->BlueBits == 0);
1963 assert(info->AlphaBits == 0);
1964 assert(info->LuminanceBits == 0);
1965 assert(info->IntensityBits == 0);
1966 }
1967 else if (info->BaseFormat == GL_RED) {
1968 assert(info->RedBits > 0);
1969 assert(info->GreenBits == 0);
1970 assert(info->BlueBits == 0);
1971 assert(info->AlphaBits == 0);
1972 assert(info->LuminanceBits == 0);
1973 assert(info->IntensityBits == 0);
1974 }
1975 else if (info->BaseFormat == GL_LUMINANCE) {
1976 assert(info->RedBits == 0);
1977 assert(info->GreenBits == 0);
1978 assert(info->BlueBits == 0);
1979 assert(info->AlphaBits == 0);
1980 assert(info->LuminanceBits > 0);
1981 assert(info->IntensityBits == 0);
1982 }
1983 else if (info->BaseFormat == GL_INTENSITY) {
1984 assert(info->RedBits == 0);
1985 assert(info->GreenBits == 0);
1986 assert(info->BlueBits == 0);
1987 assert(info->AlphaBits == 0);
1988 assert(info->LuminanceBits == 0);
1989 assert(info->IntensityBits > 0);
1990 }
1991 }
1992
1993 check_format_to_type_and_comps();
1994 }
1995
1996
1997
1998 /**
1999 * Return datatype and number of components per texel for the given gl_format.
2000 * Only used for mipmap generation code.
2001 */
2002 void
2003 _mesa_format_to_type_and_comps(gl_format format,
2004 GLenum *datatype, GLuint *comps)
2005 {
2006 switch (format) {
2007 case MESA_FORMAT_RGBA8888:
2008 case MESA_FORMAT_RGBA8888_REV:
2009 case MESA_FORMAT_ARGB8888:
2010 case MESA_FORMAT_ARGB8888_REV:
2011 case MESA_FORMAT_RGBX8888:
2012 case MESA_FORMAT_RGBX8888_REV:
2013 case MESA_FORMAT_XRGB8888:
2014 case MESA_FORMAT_XRGB8888_REV:
2015 *datatype = GL_UNSIGNED_BYTE;
2016 *comps = 4;
2017 return;
2018 case MESA_FORMAT_RGB888:
2019 case MESA_FORMAT_BGR888:
2020 *datatype = GL_UNSIGNED_BYTE;
2021 *comps = 3;
2022 return;
2023 case MESA_FORMAT_RGB565:
2024 case MESA_FORMAT_RGB565_REV:
2025 *datatype = GL_UNSIGNED_SHORT_5_6_5;
2026 *comps = 3;
2027 return;
2028
2029 case MESA_FORMAT_ARGB4444:
2030 case MESA_FORMAT_ARGB4444_REV:
2031 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
2032 *comps = 4;
2033 return;
2034
2035 case MESA_FORMAT_ARGB1555:
2036 case MESA_FORMAT_ARGB1555_REV:
2037 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
2038 *comps = 4;
2039 return;
2040
2041 case MESA_FORMAT_ARGB2101010:
2042 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2043 *comps = 4;
2044 return;
2045
2046 case MESA_FORMAT_RGBA5551:
2047 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
2048 *comps = 4;
2049 return;
2050
2051 case MESA_FORMAT_AL44:
2052 *datatype = MESA_UNSIGNED_BYTE_4_4;
2053 *comps = 2;
2054 return;
2055
2056 case MESA_FORMAT_AL88:
2057 case MESA_FORMAT_AL88_REV:
2058 case MESA_FORMAT_GR88:
2059 case MESA_FORMAT_RG88:
2060 *datatype = GL_UNSIGNED_BYTE;
2061 *comps = 2;
2062 return;
2063
2064 case MESA_FORMAT_AL1616:
2065 case MESA_FORMAT_AL1616_REV:
2066 case MESA_FORMAT_RG1616:
2067 case MESA_FORMAT_RG1616_REV:
2068 *datatype = GL_UNSIGNED_SHORT;
2069 *comps = 2;
2070 return;
2071
2072 case MESA_FORMAT_R16:
2073 case MESA_FORMAT_A16:
2074 case MESA_FORMAT_L16:
2075 case MESA_FORMAT_I16:
2076 *datatype = GL_UNSIGNED_SHORT;
2077 *comps = 1;
2078 return;
2079
2080 case MESA_FORMAT_RGB332:
2081 *datatype = GL_UNSIGNED_BYTE_3_3_2;
2082 *comps = 3;
2083 return;
2084
2085 case MESA_FORMAT_A8:
2086 case MESA_FORMAT_L8:
2087 case MESA_FORMAT_I8:
2088 case MESA_FORMAT_R8:
2089 case MESA_FORMAT_S8:
2090 *datatype = GL_UNSIGNED_BYTE;
2091 *comps = 1;
2092 return;
2093
2094 case MESA_FORMAT_YCBCR:
2095 case MESA_FORMAT_YCBCR_REV:
2096 *datatype = GL_UNSIGNED_SHORT;
2097 *comps = 2;
2098 return;
2099
2100 case MESA_FORMAT_Z24_S8:
2101 *datatype = GL_UNSIGNED_INT_24_8_MESA;
2102 *comps = 2;
2103 return;
2104
2105 case MESA_FORMAT_S8_Z24:
2106 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
2107 *comps = 2;
2108 return;
2109
2110 case MESA_FORMAT_Z16:
2111 *datatype = GL_UNSIGNED_SHORT;
2112 *comps = 1;
2113 return;
2114
2115 case MESA_FORMAT_X8_Z24:
2116 *datatype = GL_UNSIGNED_INT;
2117 *comps = 1;
2118 return;
2119
2120 case MESA_FORMAT_Z24_X8:
2121 *datatype = GL_UNSIGNED_INT;
2122 *comps = 1;
2123 return;
2124
2125 case MESA_FORMAT_Z32:
2126 *datatype = GL_UNSIGNED_INT;
2127 *comps = 1;
2128 return;
2129
2130 case MESA_FORMAT_Z32_FLOAT:
2131 *datatype = GL_FLOAT;
2132 *comps = 1;
2133 return;
2134
2135 case MESA_FORMAT_Z32_FLOAT_X24S8:
2136 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
2137 *comps = 1;
2138 return;
2139
2140 case MESA_FORMAT_DUDV8:
2141 *datatype = GL_BYTE;
2142 *comps = 2;
2143 return;
2144
2145 case MESA_FORMAT_SIGNED_R8:
2146 case MESA_FORMAT_SIGNED_A8:
2147 case MESA_FORMAT_SIGNED_L8:
2148 case MESA_FORMAT_SIGNED_I8:
2149 *datatype = GL_BYTE;
2150 *comps = 1;
2151 return;
2152 case MESA_FORMAT_SIGNED_RG88_REV:
2153 case MESA_FORMAT_SIGNED_AL88:
2154 *datatype = GL_BYTE;
2155 *comps = 2;
2156 return;
2157 case MESA_FORMAT_SIGNED_RGBA8888:
2158 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2159 case MESA_FORMAT_SIGNED_RGBX8888:
2160 *datatype = GL_BYTE;
2161 *comps = 4;
2162 return;
2163
2164 case MESA_FORMAT_RGBA_16:
2165 *datatype = GL_UNSIGNED_SHORT;
2166 *comps = 4;
2167 return;
2168
2169 case MESA_FORMAT_SIGNED_R16:
2170 case MESA_FORMAT_SIGNED_A16:
2171 case MESA_FORMAT_SIGNED_L16:
2172 case MESA_FORMAT_SIGNED_I16:
2173 *datatype = GL_SHORT;
2174 *comps = 1;
2175 return;
2176 case MESA_FORMAT_SIGNED_GR1616:
2177 case MESA_FORMAT_SIGNED_AL1616:
2178 *datatype = GL_SHORT;
2179 *comps = 2;
2180 return;
2181 case MESA_FORMAT_SIGNED_RGB_16:
2182 *datatype = GL_SHORT;
2183 *comps = 3;
2184 return;
2185 case MESA_FORMAT_SIGNED_RGBA_16:
2186 *datatype = GL_SHORT;
2187 *comps = 4;
2188 return;
2189
2190 #if FEATURE_EXT_texture_sRGB
2191 case MESA_FORMAT_SRGB8:
2192 *datatype = GL_UNSIGNED_BYTE;
2193 *comps = 3;
2194 return;
2195 case MESA_FORMAT_SRGBA8:
2196 case MESA_FORMAT_SARGB8:
2197 *datatype = GL_UNSIGNED_BYTE;
2198 *comps = 4;
2199 return;
2200 case MESA_FORMAT_SL8:
2201 *datatype = GL_UNSIGNED_BYTE;
2202 *comps = 1;
2203 return;
2204 case MESA_FORMAT_SLA8:
2205 *datatype = GL_UNSIGNED_BYTE;
2206 *comps = 2;
2207 return;
2208 #endif
2209
2210 #if FEATURE_texture_fxt1
2211 case MESA_FORMAT_RGB_FXT1:
2212 case MESA_FORMAT_RGBA_FXT1:
2213 #endif
2214 #if FEATURE_texture_s3tc
2215 case MESA_FORMAT_RGB_DXT1:
2216 case MESA_FORMAT_RGBA_DXT1:
2217 case MESA_FORMAT_RGBA_DXT3:
2218 case MESA_FORMAT_RGBA_DXT5:
2219 #if FEATURE_EXT_texture_sRGB
2220 case MESA_FORMAT_SRGB_DXT1:
2221 case MESA_FORMAT_SRGBA_DXT1:
2222 case MESA_FORMAT_SRGBA_DXT3:
2223 case MESA_FORMAT_SRGBA_DXT5:
2224 #endif
2225 #endif
2226 case MESA_FORMAT_RED_RGTC1:
2227 case MESA_FORMAT_SIGNED_RED_RGTC1:
2228 case MESA_FORMAT_RG_RGTC2:
2229 case MESA_FORMAT_SIGNED_RG_RGTC2:
2230 case MESA_FORMAT_L_LATC1:
2231 case MESA_FORMAT_SIGNED_L_LATC1:
2232 case MESA_FORMAT_LA_LATC2:
2233 case MESA_FORMAT_SIGNED_LA_LATC2:
2234 /* XXX generate error instead? */
2235 *datatype = GL_UNSIGNED_BYTE;
2236 *comps = 0;
2237 return;
2238
2239 case MESA_FORMAT_RGBA_FLOAT32:
2240 *datatype = GL_FLOAT;
2241 *comps = 4;
2242 return;
2243 case MESA_FORMAT_RGBA_FLOAT16:
2244 *datatype = GL_HALF_FLOAT_ARB;
2245 *comps = 4;
2246 return;
2247 case MESA_FORMAT_RGB_FLOAT32:
2248 *datatype = GL_FLOAT;
2249 *comps = 3;
2250 return;
2251 case MESA_FORMAT_RGB_FLOAT16:
2252 *datatype = GL_HALF_FLOAT_ARB;
2253 *comps = 3;
2254 return;
2255 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2256 case MESA_FORMAT_RG_FLOAT32:
2257 *datatype = GL_FLOAT;
2258 *comps = 2;
2259 return;
2260 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2261 case MESA_FORMAT_RG_FLOAT16:
2262 *datatype = GL_HALF_FLOAT_ARB;
2263 *comps = 2;
2264 return;
2265 case MESA_FORMAT_ALPHA_FLOAT32:
2266 case MESA_FORMAT_LUMINANCE_FLOAT32:
2267 case MESA_FORMAT_INTENSITY_FLOAT32:
2268 case MESA_FORMAT_R_FLOAT32:
2269 *datatype = GL_FLOAT;
2270 *comps = 1;
2271 return;
2272 case MESA_FORMAT_ALPHA_FLOAT16:
2273 case MESA_FORMAT_LUMINANCE_FLOAT16:
2274 case MESA_FORMAT_INTENSITY_FLOAT16:
2275 case MESA_FORMAT_R_FLOAT16:
2276 *datatype = GL_HALF_FLOAT_ARB;
2277 *comps = 1;
2278 return;
2279
2280 case MESA_FORMAT_ALPHA_UINT8:
2281 case MESA_FORMAT_LUMINANCE_UINT8:
2282 case MESA_FORMAT_INTENSITY_UINT8:
2283 *datatype = GL_UNSIGNED_BYTE;
2284 *comps = 1;
2285 return;
2286 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2287 *datatype = GL_UNSIGNED_BYTE;
2288 *comps = 2;
2289 return;
2290
2291 case MESA_FORMAT_ALPHA_UINT16:
2292 case MESA_FORMAT_LUMINANCE_UINT16:
2293 case MESA_FORMAT_INTENSITY_UINT16:
2294 *datatype = GL_UNSIGNED_SHORT;
2295 *comps = 1;
2296 return;
2297 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2298 *datatype = GL_UNSIGNED_SHORT;
2299 *comps = 2;
2300 return;
2301 case MESA_FORMAT_ALPHA_UINT32:
2302 case MESA_FORMAT_LUMINANCE_UINT32:
2303 case MESA_FORMAT_INTENSITY_UINT32:
2304 *datatype = GL_UNSIGNED_INT;
2305 *comps = 1;
2306 return;
2307 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2308 *datatype = GL_UNSIGNED_INT;
2309 *comps = 2;
2310 return;
2311 case MESA_FORMAT_ALPHA_INT8:
2312 case MESA_FORMAT_LUMINANCE_INT8:
2313 case MESA_FORMAT_INTENSITY_INT8:
2314 *datatype = GL_BYTE;
2315 *comps = 1;
2316 return;
2317 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2318 *datatype = GL_BYTE;
2319 *comps = 2;
2320 return;
2321
2322 case MESA_FORMAT_ALPHA_INT16:
2323 case MESA_FORMAT_LUMINANCE_INT16:
2324 case MESA_FORMAT_INTENSITY_INT16:
2325 *datatype = GL_SHORT;
2326 *comps = 1;
2327 return;
2328 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2329 *datatype = GL_SHORT;
2330 *comps = 2;
2331 return;
2332
2333 case MESA_FORMAT_ALPHA_INT32:
2334 case MESA_FORMAT_LUMINANCE_INT32:
2335 case MESA_FORMAT_INTENSITY_INT32:
2336 *datatype = GL_INT;
2337 *comps = 1;
2338 return;
2339 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2340 *datatype = GL_INT;
2341 *comps = 2;
2342 return;
2343
2344 case MESA_FORMAT_R_INT8:
2345 *datatype = GL_BYTE;
2346 *comps = 1;
2347 return;
2348 case MESA_FORMAT_RG_INT8:
2349 *datatype = GL_BYTE;
2350 *comps = 2;
2351 return;
2352 case MESA_FORMAT_RGB_INT8:
2353 *datatype = GL_BYTE;
2354 *comps = 3;
2355 return;
2356 case MESA_FORMAT_RGBA_INT8:
2357 *datatype = GL_BYTE;
2358 *comps = 4;
2359 return;
2360 case MESA_FORMAT_R_INT16:
2361 *datatype = GL_SHORT;
2362 *comps = 1;
2363 return;
2364 case MESA_FORMAT_RG_INT16:
2365 *datatype = GL_SHORT;
2366 *comps = 2;
2367 return;
2368 case MESA_FORMAT_RGB_INT16:
2369 *datatype = GL_SHORT;
2370 *comps = 3;
2371 return;
2372 case MESA_FORMAT_RGBA_INT16:
2373 *datatype = GL_SHORT;
2374 *comps = 4;
2375 return;
2376 case MESA_FORMAT_R_INT32:
2377 *datatype = GL_INT;
2378 *comps = 1;
2379 return;
2380 case MESA_FORMAT_RG_INT32:
2381 *datatype = GL_INT;
2382 *comps = 2;
2383 return;
2384 case MESA_FORMAT_RGB_INT32:
2385 *datatype = GL_INT;
2386 *comps = 3;
2387 return;
2388 case MESA_FORMAT_RGBA_INT32:
2389 *datatype = GL_INT;
2390 *comps = 4;
2391 return;
2392
2393 /**
2394 * \name Non-normalized unsigned integer formats.
2395 */
2396 case MESA_FORMAT_R_UINT8:
2397 *datatype = GL_UNSIGNED_BYTE;
2398 *comps = 1;
2399 return;
2400 case MESA_FORMAT_RG_UINT8:
2401 *datatype = GL_UNSIGNED_BYTE;
2402 *comps = 2;
2403 return;
2404 case MESA_FORMAT_RGB_UINT8:
2405 *datatype = GL_UNSIGNED_BYTE;
2406 *comps = 3;
2407 return;
2408 case MESA_FORMAT_RGBA_UINT8:
2409 *datatype = GL_UNSIGNED_BYTE;
2410 *comps = 4;
2411 return;
2412 case MESA_FORMAT_R_UINT16:
2413 *datatype = GL_UNSIGNED_SHORT;
2414 *comps = 1;
2415 return;
2416 case MESA_FORMAT_RG_UINT16:
2417 *datatype = GL_UNSIGNED_SHORT;
2418 *comps = 2;
2419 return;
2420 case MESA_FORMAT_RGB_UINT16:
2421 *datatype = GL_UNSIGNED_SHORT;
2422 *comps = 3;
2423 return;
2424 case MESA_FORMAT_RGBA_UINT16:
2425 *datatype = GL_UNSIGNED_SHORT;
2426 *comps = 4;
2427 return;
2428 case MESA_FORMAT_R_UINT32:
2429 *datatype = GL_UNSIGNED_INT;
2430 *comps = 1;
2431 return;
2432 case MESA_FORMAT_RG_UINT32:
2433 *datatype = GL_UNSIGNED_INT;
2434 *comps = 2;
2435 return;
2436 case MESA_FORMAT_RGB_UINT32:
2437 *datatype = GL_UNSIGNED_INT;
2438 *comps = 3;
2439 return;
2440 case MESA_FORMAT_RGBA_UINT32:
2441 *datatype = GL_UNSIGNED_INT;
2442 *comps = 4;
2443 return;
2444
2445 case MESA_FORMAT_COUNT:
2446 assert(0);
2447 return;
2448
2449 case MESA_FORMAT_NONE:
2450 /* For debug builds, warn if any formats are not handled */
2451 #ifdef DEBUG
2452 default:
2453 #endif
2454 _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
2455 _mesa_get_format_name(format));
2456 *datatype = 0;
2457 *comps = 1;
2458 }
2459 }
2460
2461 /**
2462 * Check if a gl_format exactly matches a GL formaat/type combination
2463 * such that we can use memcpy() from one to the other.
2464 *
2465 * Note: this matching assumes that GL_PACK/UNPACK_SWAP_BYTES is unset.
2466 *
2467 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
2468 */
2469 GLboolean
2470 _mesa_format_matches_format_and_type(gl_format gl_format,
2471 GLenum format, GLenum type)
2472 {
2473 const GLboolean littleEndian = _mesa_little_endian();
2474
2475 /* Note: When reading a GL format/type combination, the format lists channel
2476 * assignments from most significant channel in the type to least
2477 * significant. A type with _REV indicates that the assignments are
2478 * swapped, so they are listed from least significant to most significant.
2479 *
2480 * For sanity, please keep this switch statement ordered the same as the
2481 * enums in formats.h.
2482 */
2483
2484 switch (gl_format) {
2485
2486 case MESA_FORMAT_NONE:
2487 case MESA_FORMAT_COUNT:
2488 return GL_FALSE;
2489
2490 case MESA_FORMAT_RGBA8888:
2491 return ((format == GL_RGBA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
2492 (type == GL_UNSIGNED_BYTE && !littleEndian))) ||
2493 (format == GL_ABGR_EXT && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
2494 (type == GL_UNSIGNED_BYTE && littleEndian))));
2495
2496 case MESA_FORMAT_RGBA8888_REV:
2497 return ((format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV));
2498
2499 case MESA_FORMAT_ARGB8888:
2500 return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
2501 (type == GL_UNSIGNED_BYTE && littleEndian))));
2502
2503 case MESA_FORMAT_ARGB8888_REV:
2504 return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
2505 (type == GL_UNSIGNED_BYTE && !littleEndian))));
2506
2507 case MESA_FORMAT_RGBX8888:
2508 case MESA_FORMAT_RGBX8888_REV:
2509 return GL_FALSE;
2510
2511 case MESA_FORMAT_XRGB8888:
2512 case MESA_FORMAT_XRGB8888_REV:
2513 return GL_FALSE;
2514
2515 case MESA_FORMAT_RGB888:
2516 return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
2517
2518 case MESA_FORMAT_BGR888:
2519 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
2520
2521 case MESA_FORMAT_RGB565:
2522 return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
2523 case MESA_FORMAT_RGB565_REV:
2524 /* Some of the 16-bit MESA_FORMATs that would seem to correspond to
2525 * GL_UNSIGNED_SHORT_* are byte-swapped instead of channel-reversed,
2526 * according to formats.h, so they can't be matched.
2527 */
2528 return GL_FALSE;
2529
2530 case MESA_FORMAT_ARGB4444:
2531 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV;
2532 case MESA_FORMAT_ARGB4444_REV:
2533 return GL_FALSE;
2534
2535 case MESA_FORMAT_RGBA5551:
2536 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1;
2537
2538 case MESA_FORMAT_ARGB1555:
2539 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
2540 case MESA_FORMAT_ARGB1555_REV:
2541 return GL_FALSE;
2542
2543 case MESA_FORMAT_AL44:
2544 return GL_FALSE;
2545 case MESA_FORMAT_AL88:
2546 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
2547 case MESA_FORMAT_AL88_REV:
2548 return GL_FALSE;
2549
2550 case MESA_FORMAT_AL1616:
2551 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2552 case MESA_FORMAT_AL1616_REV:
2553 return GL_FALSE;
2554
2555 case MESA_FORMAT_RGB332:
2556 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
2557
2558 case MESA_FORMAT_A8:
2559 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
2560 case MESA_FORMAT_A16:
2561 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2562 case MESA_FORMAT_L8:
2563 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
2564 case MESA_FORMAT_L16:
2565 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && littleEndian;
2566 case MESA_FORMAT_I8:
2567 return format == GL_INTENSITY && type == GL_UNSIGNED_BYTE;
2568 case MESA_FORMAT_I16:
2569 return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT && littleEndian;
2570
2571 case MESA_FORMAT_YCBCR:
2572 case MESA_FORMAT_YCBCR_REV:
2573 return GL_FALSE;
2574
2575 case MESA_FORMAT_R8:
2576 return format == GL_RED && type == GL_UNSIGNED_BYTE;
2577 case MESA_FORMAT_GR88:
2578 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
2579 case MESA_FORMAT_RG88:
2580 return GL_FALSE;
2581
2582 case MESA_FORMAT_R16:
2583 return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian;
2584 case MESA_FORMAT_RG1616:
2585 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian;
2586 case MESA_FORMAT_RG1616_REV:
2587 return GL_FALSE;
2588
2589 case MESA_FORMAT_ARGB2101010:
2590 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV;
2591
2592 case MESA_FORMAT_Z24_S8:
2593 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8;
2594 case MESA_FORMAT_Z24_X8:
2595 case MESA_FORMAT_S8_Z24:
2596 return GL_FALSE;
2597
2598 case MESA_FORMAT_Z16:
2599 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT;
2600
2601 case MESA_FORMAT_X8_Z24:
2602 return GL_FALSE;
2603
2604 case MESA_FORMAT_Z32:
2605 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT;
2606
2607 case MESA_FORMAT_S8:
2608 return GL_FALSE;
2609
2610 case MESA_FORMAT_SRGB8:
2611 case MESA_FORMAT_SRGBA8:
2612 case MESA_FORMAT_SARGB8:
2613 case MESA_FORMAT_SL8:
2614 case MESA_FORMAT_SLA8:
2615 case MESA_FORMAT_SRGB_DXT1:
2616 case MESA_FORMAT_SRGBA_DXT1:
2617 case MESA_FORMAT_SRGBA_DXT3:
2618 case MESA_FORMAT_SRGBA_DXT5:
2619 return GL_FALSE;
2620
2621 case MESA_FORMAT_RGB_FXT1:
2622 case MESA_FORMAT_RGBA_FXT1:
2623 case MESA_FORMAT_RGB_DXT1:
2624 case MESA_FORMAT_RGBA_DXT1:
2625 case MESA_FORMAT_RGBA_DXT3:
2626 case MESA_FORMAT_RGBA_DXT5:
2627 return GL_FALSE;
2628
2629 case MESA_FORMAT_RGBA_FLOAT32:
2630 return format == GL_RGBA && type == GL_FLOAT;
2631 case MESA_FORMAT_RGBA_FLOAT16:
2632 return format == GL_RGBA && type == GL_HALF_FLOAT;
2633
2634 case MESA_FORMAT_RGB_FLOAT32:
2635 return format == GL_RGB && type == GL_FLOAT;
2636 case MESA_FORMAT_RGB_FLOAT16:
2637 return format == GL_RGB && type == GL_HALF_FLOAT;
2638
2639 case MESA_FORMAT_ALPHA_FLOAT32:
2640 return format == GL_ALPHA && type == GL_FLOAT;
2641 case MESA_FORMAT_ALPHA_FLOAT16:
2642 return format == GL_ALPHA && type == GL_HALF_FLOAT;
2643
2644 case MESA_FORMAT_LUMINANCE_FLOAT32:
2645 return format == GL_LUMINANCE && type == GL_FLOAT;
2646 case MESA_FORMAT_LUMINANCE_FLOAT16:
2647 return format == GL_LUMINANCE && type == GL_HALF_FLOAT;
2648
2649 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2650 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT;
2651 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2652 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT;
2653
2654 case MESA_FORMAT_INTENSITY_FLOAT32:
2655 return format == GL_INTENSITY && type == GL_FLOAT;
2656 case MESA_FORMAT_INTENSITY_FLOAT16:
2657 return format == GL_INTENSITY && type == GL_HALF_FLOAT;
2658
2659 case MESA_FORMAT_R_FLOAT32:
2660 return format == GL_RED && type == GL_FLOAT;
2661 case MESA_FORMAT_R_FLOAT16:
2662 return format == GL_RED && type == GL_HALF_FLOAT;
2663
2664 case MESA_FORMAT_RG_FLOAT32:
2665 return format == GL_RG && type == GL_FLOAT;
2666 case MESA_FORMAT_RG_FLOAT16:
2667 return format == GL_RG && type == GL_HALF_FLOAT;
2668
2669 /* FINISHME: What do we want to do for GL_EXT_texture_integer? */
2670 case MESA_FORMAT_ALPHA_UINT8:
2671 case MESA_FORMAT_ALPHA_UINT16:
2672 case MESA_FORMAT_ALPHA_UINT32:
2673 case MESA_FORMAT_ALPHA_INT8:
2674 case MESA_FORMAT_ALPHA_INT16:
2675 case MESA_FORMAT_ALPHA_INT32:
2676 return GL_FALSE;
2677
2678 case MESA_FORMAT_INTENSITY_UINT8:
2679 case MESA_FORMAT_INTENSITY_UINT16:
2680 case MESA_FORMAT_INTENSITY_UINT32:
2681 case MESA_FORMAT_INTENSITY_INT8:
2682 case MESA_FORMAT_INTENSITY_INT16:
2683 case MESA_FORMAT_INTENSITY_INT32:
2684 return GL_FALSE;
2685
2686 case MESA_FORMAT_LUMINANCE_UINT8:
2687 case MESA_FORMAT_LUMINANCE_UINT16:
2688 case MESA_FORMAT_LUMINANCE_UINT32:
2689 case MESA_FORMAT_LUMINANCE_INT8:
2690 case MESA_FORMAT_LUMINANCE_INT16:
2691 case MESA_FORMAT_LUMINANCE_INT32:
2692 return GL_FALSE;
2693
2694 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2695 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2696 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2697 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2698 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2699 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2700 return GL_FALSE;
2701
2702 case MESA_FORMAT_R_INT8:
2703 case MESA_FORMAT_RG_INT8:
2704 case MESA_FORMAT_RGB_INT8:
2705 case MESA_FORMAT_RGBA_INT8:
2706 case MESA_FORMAT_R_INT16:
2707 case MESA_FORMAT_RG_INT16:
2708 case MESA_FORMAT_RGB_INT16:
2709 case MESA_FORMAT_RGBA_INT16:
2710 case MESA_FORMAT_R_INT32:
2711 case MESA_FORMAT_RG_INT32:
2712 case MESA_FORMAT_RGB_INT32:
2713 case MESA_FORMAT_RGBA_INT32:
2714 return GL_FALSE;
2715
2716 case MESA_FORMAT_R_UINT8:
2717 case MESA_FORMAT_RG_UINT8:
2718 case MESA_FORMAT_RGB_UINT8:
2719 case MESA_FORMAT_RGBA_UINT8:
2720 case MESA_FORMAT_R_UINT16:
2721 case MESA_FORMAT_RG_UINT16:
2722 case MESA_FORMAT_RGB_UINT16:
2723 case MESA_FORMAT_RGBA_UINT16:
2724 case MESA_FORMAT_R_UINT32:
2725 case MESA_FORMAT_RG_UINT32:
2726 case MESA_FORMAT_RGB_UINT32:
2727 case MESA_FORMAT_RGBA_UINT32:
2728 return GL_FALSE;
2729
2730 case MESA_FORMAT_DUDV8:
2731 case MESA_FORMAT_SIGNED_R8:
2732 case MESA_FORMAT_SIGNED_RG88_REV:
2733 case MESA_FORMAT_SIGNED_RGBX8888:
2734 case MESA_FORMAT_SIGNED_RGBA8888:
2735 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2736 case MESA_FORMAT_SIGNED_R16:
2737 case MESA_FORMAT_SIGNED_GR1616:
2738 case MESA_FORMAT_SIGNED_RGB_16:
2739 case MESA_FORMAT_SIGNED_RGBA_16:
2740 case MESA_FORMAT_RGBA_16:
2741 /* FINISHME: SNORM */
2742 return GL_FALSE;
2743
2744 case MESA_FORMAT_RED_RGTC1:
2745 case MESA_FORMAT_SIGNED_RED_RGTC1:
2746 case MESA_FORMAT_RG_RGTC2:
2747 case MESA_FORMAT_SIGNED_RG_RGTC2:
2748 return GL_FALSE;
2749
2750 case MESA_FORMAT_L_LATC1:
2751 case MESA_FORMAT_SIGNED_L_LATC1:
2752 case MESA_FORMAT_LA_LATC2:
2753 case MESA_FORMAT_SIGNED_LA_LATC2:
2754 return GL_FALSE;
2755
2756 case MESA_FORMAT_SIGNED_A8:
2757 case MESA_FORMAT_SIGNED_L8:
2758 case MESA_FORMAT_SIGNED_AL88:
2759 case MESA_FORMAT_SIGNED_I8:
2760 case MESA_FORMAT_SIGNED_A16:
2761 case MESA_FORMAT_SIGNED_L16:
2762 case MESA_FORMAT_SIGNED_AL1616:
2763 case MESA_FORMAT_SIGNED_I16:
2764 /* FINISHME: SNORM */
2765 return GL_FALSE;
2766
2767 case MESA_FORMAT_Z32_FLOAT:
2768 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT;
2769
2770 case MESA_FORMAT_Z32_FLOAT_X24S8:
2771 return GL_FALSE;
2772 }
2773
2774 return GL_FALSE;
2775 }
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