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mesa: added swapBytes parameter to _mesa_format_matches_format_and_type()
[mesa.git] / 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 {
1391 MESA_FORMAT_ETC1_RGB8,
1392 "MESA_FORMAT_ETC1_RGB8",
1393 GL_RGB,
1394 GL_UNSIGNED_NORMALIZED,
1395 8, 8, 8, 0,
1396 0, 0, 0, 0, 0,
1397 4, 4, 8 /* 8 bytes per 4x4 block */
1398 },
1399
1400 /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
1401 {
1402 MESA_FORMAT_SIGNED_A8,
1403 "MESA_FORMAT_SIGNED_A8",
1404 GL_ALPHA,
1405 GL_SIGNED_NORMALIZED,
1406 0, 0, 0, 8,
1407 0, 0, 0, 0, 0,
1408 1, 1, 1
1409 },
1410 {
1411 MESA_FORMAT_SIGNED_L8,
1412 "MESA_FORMAT_SIGNED_L8",
1413 GL_LUMINANCE,
1414 GL_SIGNED_NORMALIZED,
1415 0, 0, 0, 0,
1416 8, 0, 0, 0, 0,
1417 1, 1, 1
1418 },
1419 {
1420 MESA_FORMAT_SIGNED_AL88,
1421 "MESA_FORMAT_SIGNED_AL88",
1422 GL_LUMINANCE_ALPHA,
1423 GL_SIGNED_NORMALIZED,
1424 0, 0, 0, 8,
1425 8, 0, 0, 0, 0,
1426 1, 1, 2
1427 },
1428 {
1429 MESA_FORMAT_SIGNED_I8,
1430 "MESA_FORMAT_SIGNED_I8",
1431 GL_INTENSITY,
1432 GL_SIGNED_NORMALIZED,
1433 0, 0, 0, 0,
1434 0, 8, 0, 0, 0,
1435 1, 1, 1
1436 },
1437 {
1438 MESA_FORMAT_SIGNED_A16,
1439 "MESA_FORMAT_SIGNED_A16",
1440 GL_ALPHA,
1441 GL_SIGNED_NORMALIZED,
1442 0, 0, 0, 16,
1443 0, 0, 0, 0, 0,
1444 1, 1, 2
1445 },
1446 {
1447 MESA_FORMAT_SIGNED_L16,
1448 "MESA_FORMAT_SIGNED_L16",
1449 GL_LUMINANCE,
1450 GL_SIGNED_NORMALIZED,
1451 0, 0, 0, 0,
1452 16, 0, 0, 0, 0,
1453 1, 1, 2
1454 },
1455 {
1456 MESA_FORMAT_SIGNED_AL1616,
1457 "MESA_FORMAT_SIGNED_AL1616",
1458 GL_LUMINANCE_ALPHA,
1459 GL_SIGNED_NORMALIZED,
1460 0, 0, 0, 16,
1461 16, 0, 0, 0, 0,
1462 1, 1, 4
1463 },
1464 {
1465 MESA_FORMAT_SIGNED_I16,
1466 "MESA_FORMAT_SIGNED_I16",
1467 GL_INTENSITY,
1468 GL_SIGNED_NORMALIZED,
1469 0, 0, 0, 0,
1470 0, 16, 0, 0, 0,
1471 1, 1, 2
1472 },
1473 {
1474 MESA_FORMAT_RGB9_E5_FLOAT,
1475 "MESA_FORMAT_RGB9_E5",
1476 GL_RGB,
1477 GL_FLOAT,
1478 9, 9, 9, 0,
1479 0, 0, 0, 0, 0,
1480 1, 1, 4
1481 },
1482 {
1483 MESA_FORMAT_R11_G11_B10_FLOAT,
1484 "MESA_FORMAT_R11_G11_B10_FLOAT",
1485 GL_RGB,
1486 GL_FLOAT,
1487 11, 11, 10, 0,
1488 0, 0, 0, 0, 0,
1489 1, 1, 4
1490 },
1491 /* ARB_depth_buffer_float */
1492 {
1493 MESA_FORMAT_Z32_FLOAT, /* Name */
1494 "MESA_FORMAT_Z32_FLOAT", /* StrName */
1495 GL_DEPTH_COMPONENT, /* BaseFormat */
1496 GL_FLOAT, /* DataType */
1497 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1498 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
1499 1, 1, 4 /* BlockWidth/Height,Bytes */
1500 },
1501 {
1502 MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
1503 "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
1504 GL_DEPTH_STENCIL, /* BaseFormat */
1505 /* DataType here is used to answer GL_TEXTURE_DEPTH_TYPE queries, and is
1506 * never used for stencil because stencil is always GL_UNSIGNED_INT.
1507 */
1508 GL_FLOAT, /* DataType */
1509 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1510 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
1511 1, 1, 8 /* BlockWidth/Height,Bytes */
1512 },
1513 {
1514 MESA_FORMAT_ARGB2101010_UINT,
1515 "MESA_FORMAT_ARGB2101010_UINT",
1516 GL_RGBA,
1517 GL_UNSIGNED_INT,
1518 10, 10, 10, 2,
1519 0, 0, 0, 0, 0,
1520 1, 1, 4
1521 },
1522 };
1523
1524
1525
1526 static const struct gl_format_info *
1527 _mesa_get_format_info(gl_format format)
1528 {
1529 const struct gl_format_info *info = &format_info[format];
1530 assert(info->Name == format);
1531 return info;
1532 }
1533
1534
1535 /** Return string name of format (for debugging) */
1536 const char *
1537 _mesa_get_format_name(gl_format format)
1538 {
1539 const struct gl_format_info *info = _mesa_get_format_info(format);
1540 return info->StrName;
1541 }
1542
1543
1544
1545 /**
1546 * Return bytes needed to store a block of pixels in the given format.
1547 * Normally, a block is 1x1 (a single pixel). But for compressed formats
1548 * a block may be 4x4 or 8x4, etc.
1549 *
1550 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
1551 */
1552 GLint
1553 _mesa_get_format_bytes(gl_format format)
1554 {
1555 const struct gl_format_info *info = _mesa_get_format_info(format);
1556 ASSERT(info->BytesPerBlock);
1557 ASSERT(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
1558 _mesa_is_format_compressed(format));
1559 return info->BytesPerBlock;
1560 }
1561
1562
1563 /**
1564 * Return bits per component for the given format.
1565 * \param format one of MESA_FORMAT_x
1566 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
1567 */
1568 GLint
1569 _mesa_get_format_bits(gl_format format, GLenum pname)
1570 {
1571 const struct gl_format_info *info = _mesa_get_format_info(format);
1572
1573 switch (pname) {
1574 case GL_RED_BITS:
1575 case GL_TEXTURE_RED_SIZE:
1576 case GL_RENDERBUFFER_RED_SIZE_EXT:
1577 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1578 return info->RedBits;
1579 case GL_GREEN_BITS:
1580 case GL_TEXTURE_GREEN_SIZE:
1581 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1582 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1583 return info->GreenBits;
1584 case GL_BLUE_BITS:
1585 case GL_TEXTURE_BLUE_SIZE:
1586 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1587 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1588 return info->BlueBits;
1589 case GL_ALPHA_BITS:
1590 case GL_TEXTURE_ALPHA_SIZE:
1591 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1592 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1593 return info->AlphaBits;
1594 case GL_TEXTURE_INTENSITY_SIZE:
1595 return info->IntensityBits;
1596 case GL_TEXTURE_LUMINANCE_SIZE:
1597 return info->LuminanceBits;
1598 case GL_INDEX_BITS:
1599 return info->IndexBits;
1600 case GL_DEPTH_BITS:
1601 case GL_TEXTURE_DEPTH_SIZE_ARB:
1602 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1603 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1604 return info->DepthBits;
1605 case GL_STENCIL_BITS:
1606 case GL_TEXTURE_STENCIL_SIZE_EXT:
1607 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1608 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1609 return info->StencilBits;
1610 default:
1611 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
1612 return 0;
1613 }
1614 }
1615
1616
1617 GLuint
1618 _mesa_get_format_max_bits(gl_format format)
1619 {
1620 const struct gl_format_info *info = _mesa_get_format_info(format);
1621 GLuint max = MAX2(info->RedBits, info->GreenBits);
1622 max = MAX2(max, info->BlueBits);
1623 max = MAX2(max, info->AlphaBits);
1624 max = MAX2(max, info->LuminanceBits);
1625 max = MAX2(max, info->IntensityBits);
1626 max = MAX2(max, info->DepthBits);
1627 max = MAX2(max, info->StencilBits);
1628 return max;
1629 }
1630
1631
1632 /**
1633 * Return the data type (or more specifically, the data representation)
1634 * for the given format.
1635 * The return value will be one of:
1636 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
1637 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
1638 * GL_UNSIGNED_INT = an ordinary unsigned integer
1639 * GL_INT = an ordinary signed integer
1640 * GL_FLOAT = an ordinary float
1641 */
1642 GLenum
1643 _mesa_get_format_datatype(gl_format format)
1644 {
1645 const struct gl_format_info *info = _mesa_get_format_info(format);
1646 return info->DataType;
1647 }
1648
1649
1650 /**
1651 * Return the basic format for the given type. The result will be one of
1652 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
1653 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
1654 */
1655 GLenum
1656 _mesa_get_format_base_format(gl_format format)
1657 {
1658 const struct gl_format_info *info = _mesa_get_format_info(format);
1659 return info->BaseFormat;
1660 }
1661
1662
1663 /**
1664 * Return the block size (in pixels) for the given format. Normally
1665 * the block size is 1x1. But compressed formats will have block sizes
1666 * of 4x4 or 8x4 pixels, etc.
1667 * \param bw returns block width in pixels
1668 * \param bh returns block height in pixels
1669 */
1670 void
1671 _mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
1672 {
1673 const struct gl_format_info *info = _mesa_get_format_info(format);
1674 *bw = info->BlockWidth;
1675 *bh = info->BlockHeight;
1676 }
1677
1678
1679 /** Is the given format a compressed format? */
1680 GLboolean
1681 _mesa_is_format_compressed(gl_format format)
1682 {
1683 const struct gl_format_info *info = _mesa_get_format_info(format);
1684 return info->BlockWidth > 1 || info->BlockHeight > 1;
1685 }
1686
1687
1688 /**
1689 * Determine if the given format represents a packed depth/stencil buffer.
1690 */
1691 GLboolean
1692 _mesa_is_format_packed_depth_stencil(gl_format format)
1693 {
1694 const struct gl_format_info *info = _mesa_get_format_info(format);
1695
1696 return info->BaseFormat == GL_DEPTH_STENCIL;
1697 }
1698
1699
1700 /**
1701 * Is the given format a signed/unsigned integer color format?
1702 */
1703 GLboolean
1704 _mesa_is_format_integer_color(gl_format format)
1705 {
1706 const struct gl_format_info *info = _mesa_get_format_info(format);
1707 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
1708 info->BaseFormat != GL_DEPTH_COMPONENT &&
1709 info->BaseFormat != GL_DEPTH_STENCIL &&
1710 info->BaseFormat != GL_STENCIL_INDEX;
1711 }
1712
1713
1714 /**
1715 * Return color encoding for given format.
1716 * \return GL_LINEAR or GL_SRGB
1717 */
1718 GLenum
1719 _mesa_get_format_color_encoding(gl_format format)
1720 {
1721 /* XXX this info should be encoded in gl_format_info */
1722 switch (format) {
1723 case MESA_FORMAT_SRGB8:
1724 case MESA_FORMAT_SRGBA8:
1725 case MESA_FORMAT_SARGB8:
1726 case MESA_FORMAT_SL8:
1727 case MESA_FORMAT_SLA8:
1728 case MESA_FORMAT_SRGB_DXT1:
1729 case MESA_FORMAT_SRGBA_DXT1:
1730 case MESA_FORMAT_SRGBA_DXT3:
1731 case MESA_FORMAT_SRGBA_DXT5:
1732 return GL_SRGB;
1733 default:
1734 return GL_LINEAR;
1735 }
1736 }
1737
1738
1739 /**
1740 * For an sRGB format, return the corresponding linear color space format.
1741 * For non-sRGB formats, return the format as-is.
1742 */
1743 gl_format
1744 _mesa_get_srgb_format_linear(gl_format format)
1745 {
1746 switch (format) {
1747 case MESA_FORMAT_SRGB8:
1748 format = MESA_FORMAT_RGB888;
1749 break;
1750 case MESA_FORMAT_SRGBA8:
1751 format = MESA_FORMAT_RGBA8888;
1752 break;
1753 case MESA_FORMAT_SARGB8:
1754 format = MESA_FORMAT_ARGB8888;
1755 break;
1756 case MESA_FORMAT_SL8:
1757 format = MESA_FORMAT_L8;
1758 break;
1759 case MESA_FORMAT_SLA8:
1760 format = MESA_FORMAT_AL88;
1761 break;
1762 case MESA_FORMAT_SRGB_DXT1:
1763 format = MESA_FORMAT_RGB_DXT1;
1764 break;
1765 case MESA_FORMAT_SRGBA_DXT1:
1766 format = MESA_FORMAT_RGBA_DXT1;
1767 break;
1768 case MESA_FORMAT_SRGBA_DXT3:
1769 format = MESA_FORMAT_RGBA_DXT3;
1770 break;
1771 case MESA_FORMAT_SRGBA_DXT5:
1772 format = MESA_FORMAT_RGBA_DXT5;
1773 break;
1774 default:
1775 break;
1776 }
1777 return format;
1778 }
1779
1780
1781 /**
1782 * If the given format is a compressed format, return a corresponding
1783 * uncompressed format.
1784 */
1785 gl_format
1786 _mesa_get_uncompressed_format(gl_format format)
1787 {
1788 switch (format) {
1789 case MESA_FORMAT_RGB_FXT1:
1790 return MESA_FORMAT_RGB888;
1791 case MESA_FORMAT_RGBA_FXT1:
1792 return MESA_FORMAT_RGBA8888;
1793 case MESA_FORMAT_RGB_DXT1:
1794 case MESA_FORMAT_SRGB_DXT1:
1795 return MESA_FORMAT_RGB888;
1796 case MESA_FORMAT_RGBA_DXT1:
1797 case MESA_FORMAT_SRGBA_DXT1:
1798 return MESA_FORMAT_RGBA8888;
1799 case MESA_FORMAT_RGBA_DXT3:
1800 case MESA_FORMAT_SRGBA_DXT3:
1801 return MESA_FORMAT_RGBA8888;
1802 case MESA_FORMAT_RGBA_DXT5:
1803 case MESA_FORMAT_SRGBA_DXT5:
1804 return MESA_FORMAT_RGBA8888;
1805 case MESA_FORMAT_RED_RGTC1:
1806 return MESA_FORMAT_R8;
1807 case MESA_FORMAT_SIGNED_RED_RGTC1:
1808 return MESA_FORMAT_SIGNED_R8;
1809 case MESA_FORMAT_RG_RGTC2:
1810 return MESA_FORMAT_GR88;
1811 case MESA_FORMAT_SIGNED_RG_RGTC2:
1812 return MESA_FORMAT_SIGNED_RG88_REV;
1813 case MESA_FORMAT_L_LATC1:
1814 return MESA_FORMAT_L8;
1815 case MESA_FORMAT_SIGNED_L_LATC1:
1816 return MESA_FORMAT_SIGNED_L8;
1817 case MESA_FORMAT_LA_LATC2:
1818 return MESA_FORMAT_AL88;
1819 case MESA_FORMAT_SIGNED_LA_LATC2:
1820 return MESA_FORMAT_SIGNED_AL88;
1821 case MESA_FORMAT_ETC1_RGB8:
1822 return MESA_FORMAT_RGB888;
1823 default:
1824 #ifdef DEBUG
1825 assert(!_mesa_is_format_compressed(format));
1826 #endif
1827 return format;
1828 }
1829 }
1830
1831
1832 GLuint
1833 _mesa_format_num_components(gl_format format)
1834 {
1835 const struct gl_format_info *info = _mesa_get_format_info(format);
1836 return ((info->RedBits > 0) +
1837 (info->GreenBits > 0) +
1838 (info->BlueBits > 0) +
1839 (info->AlphaBits > 0) +
1840 (info->LuminanceBits > 0) +
1841 (info->IntensityBits > 0) +
1842 (info->DepthBits > 0) +
1843 (info->StencilBits > 0));
1844 }
1845
1846
1847 /**
1848 * Return number of bytes needed to store an image of the given size
1849 * in the given format.
1850 */
1851 GLuint
1852 _mesa_format_image_size(gl_format format, GLsizei width,
1853 GLsizei height, GLsizei depth)
1854 {
1855 const struct gl_format_info *info = _mesa_get_format_info(format);
1856 /* Strictly speaking, a conditional isn't needed here */
1857 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1858 /* compressed format (2D only for now) */
1859 const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
1860 const GLuint wblocks = (width + bw - 1) / bw;
1861 const GLuint hblocks = (height + bh - 1) / bh;
1862 const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
1863 assert(depth == 1);
1864 return sz;
1865 }
1866 else {
1867 /* non-compressed */
1868 const GLuint sz = width * height * depth * info->BytesPerBlock;
1869 return sz;
1870 }
1871 }
1872
1873
1874 /**
1875 * Same as _mesa_format_image_size() but returns a 64-bit value to
1876 * accomodate very large textures.
1877 */
1878 uint64_t
1879 _mesa_format_image_size64(gl_format format, GLsizei width,
1880 GLsizei height, GLsizei depth)
1881 {
1882 const struct gl_format_info *info = _mesa_get_format_info(format);
1883 /* Strictly speaking, a conditional isn't needed here */
1884 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1885 /* compressed format (2D only for now) */
1886 const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
1887 const uint64_t wblocks = (width + bw - 1) / bw;
1888 const uint64_t hblocks = (height + bh - 1) / bh;
1889 const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
1890 assert(depth == 1);
1891 return sz;
1892 }
1893 else {
1894 /* non-compressed */
1895 const uint64_t sz = ((uint64_t) width *
1896 (uint64_t) height *
1897 (uint64_t) depth *
1898 info->BytesPerBlock);
1899 return sz;
1900 }
1901 }
1902
1903
1904
1905 GLint
1906 _mesa_format_row_stride(gl_format format, GLsizei width)
1907 {
1908 const struct gl_format_info *info = _mesa_get_format_info(format);
1909 /* Strictly speaking, a conditional isn't needed here */
1910 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1911 /* compressed format */
1912 const GLuint bw = info->BlockWidth;
1913 const GLuint wblocks = (width + bw - 1) / bw;
1914 const GLint stride = wblocks * info->BytesPerBlock;
1915 return stride;
1916 }
1917 else {
1918 const GLint stride = width * info->BytesPerBlock;
1919 return stride;
1920 }
1921 }
1922
1923
1924 /**
1925 * Debug/test: check that all formats are handled in the
1926 * _mesa_format_to_type_and_comps() function. When new pixel formats
1927 * are added to Mesa, that function needs to be updated.
1928 * This is a no-op after the first call.
1929 */
1930 static void
1931 check_format_to_type_and_comps(void)
1932 {
1933 gl_format f;
1934
1935 for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
1936 GLenum datatype = 0;
1937 GLuint comps = 0;
1938 /* This function will emit a problem/warning if the format is
1939 * not handled.
1940 */
1941 _mesa_format_to_type_and_comps(f, &datatype, &comps);
1942 }
1943 }
1944
1945
1946 /**
1947 * Do sanity checking of the format info table.
1948 */
1949 void
1950 _mesa_test_formats(void)
1951 {
1952 GLuint i;
1953
1954 STATIC_ASSERT(Elements(format_info) == MESA_FORMAT_COUNT);
1955
1956 for (i = 0; i < MESA_FORMAT_COUNT; i++) {
1957 const struct gl_format_info *info = _mesa_get_format_info(i);
1958 assert(info);
1959
1960 assert(info->Name == i);
1961
1962 if (info->Name == MESA_FORMAT_NONE)
1963 continue;
1964
1965 if (info->BlockWidth == 1 && info->BlockHeight == 1) {
1966 if (info->RedBits > 0) {
1967 GLuint t = info->RedBits + info->GreenBits
1968 + info->BlueBits + info->AlphaBits;
1969 assert(t / 8 <= info->BytesPerBlock);
1970 (void) t;
1971 }
1972 }
1973
1974 assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
1975 info->DataType == GL_SIGNED_NORMALIZED ||
1976 info->DataType == GL_UNSIGNED_INT ||
1977 info->DataType == GL_INT ||
1978 info->DataType == GL_FLOAT ||
1979 /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
1980 info->DataType == GL_NONE);
1981
1982 if (info->BaseFormat == GL_RGB) {
1983 assert(info->RedBits > 0);
1984 assert(info->GreenBits > 0);
1985 assert(info->BlueBits > 0);
1986 assert(info->AlphaBits == 0);
1987 assert(info->LuminanceBits == 0);
1988 assert(info->IntensityBits == 0);
1989 }
1990 else if (info->BaseFormat == GL_RGBA) {
1991 assert(info->RedBits > 0);
1992 assert(info->GreenBits > 0);
1993 assert(info->BlueBits > 0);
1994 assert(info->AlphaBits > 0);
1995 assert(info->LuminanceBits == 0);
1996 assert(info->IntensityBits == 0);
1997 }
1998 else if (info->BaseFormat == GL_RG) {
1999 assert(info->RedBits > 0);
2000 assert(info->GreenBits > 0);
2001 assert(info->BlueBits == 0);
2002 assert(info->AlphaBits == 0);
2003 assert(info->LuminanceBits == 0);
2004 assert(info->IntensityBits == 0);
2005 }
2006 else if (info->BaseFormat == GL_RED) {
2007 assert(info->RedBits > 0);
2008 assert(info->GreenBits == 0);
2009 assert(info->BlueBits == 0);
2010 assert(info->AlphaBits == 0);
2011 assert(info->LuminanceBits == 0);
2012 assert(info->IntensityBits == 0);
2013 }
2014 else if (info->BaseFormat == GL_LUMINANCE) {
2015 assert(info->RedBits == 0);
2016 assert(info->GreenBits == 0);
2017 assert(info->BlueBits == 0);
2018 assert(info->AlphaBits == 0);
2019 assert(info->LuminanceBits > 0);
2020 assert(info->IntensityBits == 0);
2021 }
2022 else if (info->BaseFormat == GL_INTENSITY) {
2023 assert(info->RedBits == 0);
2024 assert(info->GreenBits == 0);
2025 assert(info->BlueBits == 0);
2026 assert(info->AlphaBits == 0);
2027 assert(info->LuminanceBits == 0);
2028 assert(info->IntensityBits > 0);
2029 }
2030 }
2031
2032 check_format_to_type_and_comps();
2033 }
2034
2035
2036
2037 /**
2038 * Return datatype and number of components per texel for the given gl_format.
2039 * Only used for mipmap generation code.
2040 */
2041 void
2042 _mesa_format_to_type_and_comps(gl_format format,
2043 GLenum *datatype, GLuint *comps)
2044 {
2045 switch (format) {
2046 case MESA_FORMAT_RGBA8888:
2047 case MESA_FORMAT_RGBA8888_REV:
2048 case MESA_FORMAT_ARGB8888:
2049 case MESA_FORMAT_ARGB8888_REV:
2050 case MESA_FORMAT_RGBX8888:
2051 case MESA_FORMAT_RGBX8888_REV:
2052 case MESA_FORMAT_XRGB8888:
2053 case MESA_FORMAT_XRGB8888_REV:
2054 *datatype = GL_UNSIGNED_BYTE;
2055 *comps = 4;
2056 return;
2057 case MESA_FORMAT_RGB888:
2058 case MESA_FORMAT_BGR888:
2059 *datatype = GL_UNSIGNED_BYTE;
2060 *comps = 3;
2061 return;
2062 case MESA_FORMAT_RGB565:
2063 case MESA_FORMAT_RGB565_REV:
2064 *datatype = GL_UNSIGNED_SHORT_5_6_5;
2065 *comps = 3;
2066 return;
2067
2068 case MESA_FORMAT_ARGB4444:
2069 case MESA_FORMAT_ARGB4444_REV:
2070 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
2071 *comps = 4;
2072 return;
2073
2074 case MESA_FORMAT_ARGB1555:
2075 case MESA_FORMAT_ARGB1555_REV:
2076 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
2077 *comps = 4;
2078 return;
2079
2080 case MESA_FORMAT_ARGB2101010:
2081 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2082 *comps = 4;
2083 return;
2084
2085 case MESA_FORMAT_RGBA5551:
2086 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
2087 *comps = 4;
2088 return;
2089
2090 case MESA_FORMAT_AL44:
2091 *datatype = MESA_UNSIGNED_BYTE_4_4;
2092 *comps = 2;
2093 return;
2094
2095 case MESA_FORMAT_AL88:
2096 case MESA_FORMAT_AL88_REV:
2097 case MESA_FORMAT_GR88:
2098 case MESA_FORMAT_RG88:
2099 *datatype = GL_UNSIGNED_BYTE;
2100 *comps = 2;
2101 return;
2102
2103 case MESA_FORMAT_AL1616:
2104 case MESA_FORMAT_AL1616_REV:
2105 case MESA_FORMAT_RG1616:
2106 case MESA_FORMAT_RG1616_REV:
2107 *datatype = GL_UNSIGNED_SHORT;
2108 *comps = 2;
2109 return;
2110
2111 case MESA_FORMAT_R16:
2112 case MESA_FORMAT_A16:
2113 case MESA_FORMAT_L16:
2114 case MESA_FORMAT_I16:
2115 *datatype = GL_UNSIGNED_SHORT;
2116 *comps = 1;
2117 return;
2118
2119 case MESA_FORMAT_RGB332:
2120 *datatype = GL_UNSIGNED_BYTE_3_3_2;
2121 *comps = 3;
2122 return;
2123
2124 case MESA_FORMAT_A8:
2125 case MESA_FORMAT_L8:
2126 case MESA_FORMAT_I8:
2127 case MESA_FORMAT_R8:
2128 case MESA_FORMAT_S8:
2129 *datatype = GL_UNSIGNED_BYTE;
2130 *comps = 1;
2131 return;
2132
2133 case MESA_FORMAT_YCBCR:
2134 case MESA_FORMAT_YCBCR_REV:
2135 *datatype = GL_UNSIGNED_SHORT;
2136 *comps = 2;
2137 return;
2138
2139 case MESA_FORMAT_Z24_S8:
2140 *datatype = GL_UNSIGNED_INT_24_8_MESA;
2141 *comps = 2;
2142 return;
2143
2144 case MESA_FORMAT_S8_Z24:
2145 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
2146 *comps = 2;
2147 return;
2148
2149 case MESA_FORMAT_Z16:
2150 *datatype = GL_UNSIGNED_SHORT;
2151 *comps = 1;
2152 return;
2153
2154 case MESA_FORMAT_X8_Z24:
2155 *datatype = GL_UNSIGNED_INT;
2156 *comps = 1;
2157 return;
2158
2159 case MESA_FORMAT_Z24_X8:
2160 *datatype = GL_UNSIGNED_INT;
2161 *comps = 1;
2162 return;
2163
2164 case MESA_FORMAT_Z32:
2165 *datatype = GL_UNSIGNED_INT;
2166 *comps = 1;
2167 return;
2168
2169 case MESA_FORMAT_Z32_FLOAT:
2170 *datatype = GL_FLOAT;
2171 *comps = 1;
2172 return;
2173
2174 case MESA_FORMAT_Z32_FLOAT_X24S8:
2175 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
2176 *comps = 1;
2177 return;
2178
2179 case MESA_FORMAT_DUDV8:
2180 *datatype = GL_BYTE;
2181 *comps = 2;
2182 return;
2183
2184 case MESA_FORMAT_SIGNED_R8:
2185 case MESA_FORMAT_SIGNED_A8:
2186 case MESA_FORMAT_SIGNED_L8:
2187 case MESA_FORMAT_SIGNED_I8:
2188 *datatype = GL_BYTE;
2189 *comps = 1;
2190 return;
2191 case MESA_FORMAT_SIGNED_RG88_REV:
2192 case MESA_FORMAT_SIGNED_AL88:
2193 *datatype = GL_BYTE;
2194 *comps = 2;
2195 return;
2196 case MESA_FORMAT_SIGNED_RGBA8888:
2197 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2198 case MESA_FORMAT_SIGNED_RGBX8888:
2199 *datatype = GL_BYTE;
2200 *comps = 4;
2201 return;
2202
2203 case MESA_FORMAT_RGBA_16:
2204 *datatype = GL_UNSIGNED_SHORT;
2205 *comps = 4;
2206 return;
2207
2208 case MESA_FORMAT_SIGNED_R16:
2209 case MESA_FORMAT_SIGNED_A16:
2210 case MESA_FORMAT_SIGNED_L16:
2211 case MESA_FORMAT_SIGNED_I16:
2212 *datatype = GL_SHORT;
2213 *comps = 1;
2214 return;
2215 case MESA_FORMAT_SIGNED_GR1616:
2216 case MESA_FORMAT_SIGNED_AL1616:
2217 *datatype = GL_SHORT;
2218 *comps = 2;
2219 return;
2220 case MESA_FORMAT_SIGNED_RGB_16:
2221 *datatype = GL_SHORT;
2222 *comps = 3;
2223 return;
2224 case MESA_FORMAT_SIGNED_RGBA_16:
2225 *datatype = GL_SHORT;
2226 *comps = 4;
2227 return;
2228
2229 #if FEATURE_EXT_texture_sRGB
2230 case MESA_FORMAT_SRGB8:
2231 *datatype = GL_UNSIGNED_BYTE;
2232 *comps = 3;
2233 return;
2234 case MESA_FORMAT_SRGBA8:
2235 case MESA_FORMAT_SARGB8:
2236 *datatype = GL_UNSIGNED_BYTE;
2237 *comps = 4;
2238 return;
2239 case MESA_FORMAT_SL8:
2240 *datatype = GL_UNSIGNED_BYTE;
2241 *comps = 1;
2242 return;
2243 case MESA_FORMAT_SLA8:
2244 *datatype = GL_UNSIGNED_BYTE;
2245 *comps = 2;
2246 return;
2247 #endif
2248
2249 #if FEATURE_texture_fxt1
2250 case MESA_FORMAT_RGB_FXT1:
2251 case MESA_FORMAT_RGBA_FXT1:
2252 #endif
2253 #if FEATURE_texture_s3tc
2254 case MESA_FORMAT_RGB_DXT1:
2255 case MESA_FORMAT_RGBA_DXT1:
2256 case MESA_FORMAT_RGBA_DXT3:
2257 case MESA_FORMAT_RGBA_DXT5:
2258 #if FEATURE_EXT_texture_sRGB
2259 case MESA_FORMAT_SRGB_DXT1:
2260 case MESA_FORMAT_SRGBA_DXT1:
2261 case MESA_FORMAT_SRGBA_DXT3:
2262 case MESA_FORMAT_SRGBA_DXT5:
2263 #endif
2264 #endif
2265 case MESA_FORMAT_RED_RGTC1:
2266 case MESA_FORMAT_SIGNED_RED_RGTC1:
2267 case MESA_FORMAT_RG_RGTC2:
2268 case MESA_FORMAT_SIGNED_RG_RGTC2:
2269 case MESA_FORMAT_L_LATC1:
2270 case MESA_FORMAT_SIGNED_L_LATC1:
2271 case MESA_FORMAT_LA_LATC2:
2272 case MESA_FORMAT_SIGNED_LA_LATC2:
2273 case MESA_FORMAT_ETC1_RGB8:
2274 /* XXX generate error instead? */
2275 *datatype = GL_UNSIGNED_BYTE;
2276 *comps = 0;
2277 return;
2278
2279 case MESA_FORMAT_RGBA_FLOAT32:
2280 *datatype = GL_FLOAT;
2281 *comps = 4;
2282 return;
2283 case MESA_FORMAT_RGBA_FLOAT16:
2284 *datatype = GL_HALF_FLOAT_ARB;
2285 *comps = 4;
2286 return;
2287 case MESA_FORMAT_RGB_FLOAT32:
2288 *datatype = GL_FLOAT;
2289 *comps = 3;
2290 return;
2291 case MESA_FORMAT_RGB_FLOAT16:
2292 *datatype = GL_HALF_FLOAT_ARB;
2293 *comps = 3;
2294 return;
2295 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2296 case MESA_FORMAT_RG_FLOAT32:
2297 *datatype = GL_FLOAT;
2298 *comps = 2;
2299 return;
2300 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2301 case MESA_FORMAT_RG_FLOAT16:
2302 *datatype = GL_HALF_FLOAT_ARB;
2303 *comps = 2;
2304 return;
2305 case MESA_FORMAT_ALPHA_FLOAT32:
2306 case MESA_FORMAT_LUMINANCE_FLOAT32:
2307 case MESA_FORMAT_INTENSITY_FLOAT32:
2308 case MESA_FORMAT_R_FLOAT32:
2309 *datatype = GL_FLOAT;
2310 *comps = 1;
2311 return;
2312 case MESA_FORMAT_ALPHA_FLOAT16:
2313 case MESA_FORMAT_LUMINANCE_FLOAT16:
2314 case MESA_FORMAT_INTENSITY_FLOAT16:
2315 case MESA_FORMAT_R_FLOAT16:
2316 *datatype = GL_HALF_FLOAT_ARB;
2317 *comps = 1;
2318 return;
2319
2320 case MESA_FORMAT_ALPHA_UINT8:
2321 case MESA_FORMAT_LUMINANCE_UINT8:
2322 case MESA_FORMAT_INTENSITY_UINT8:
2323 *datatype = GL_UNSIGNED_BYTE;
2324 *comps = 1;
2325 return;
2326 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2327 *datatype = GL_UNSIGNED_BYTE;
2328 *comps = 2;
2329 return;
2330
2331 case MESA_FORMAT_ALPHA_UINT16:
2332 case MESA_FORMAT_LUMINANCE_UINT16:
2333 case MESA_FORMAT_INTENSITY_UINT16:
2334 *datatype = GL_UNSIGNED_SHORT;
2335 *comps = 1;
2336 return;
2337 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2338 *datatype = GL_UNSIGNED_SHORT;
2339 *comps = 2;
2340 return;
2341 case MESA_FORMAT_ALPHA_UINT32:
2342 case MESA_FORMAT_LUMINANCE_UINT32:
2343 case MESA_FORMAT_INTENSITY_UINT32:
2344 *datatype = GL_UNSIGNED_INT;
2345 *comps = 1;
2346 return;
2347 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2348 *datatype = GL_UNSIGNED_INT;
2349 *comps = 2;
2350 return;
2351 case MESA_FORMAT_ALPHA_INT8:
2352 case MESA_FORMAT_LUMINANCE_INT8:
2353 case MESA_FORMAT_INTENSITY_INT8:
2354 *datatype = GL_BYTE;
2355 *comps = 1;
2356 return;
2357 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2358 *datatype = GL_BYTE;
2359 *comps = 2;
2360 return;
2361
2362 case MESA_FORMAT_ALPHA_INT16:
2363 case MESA_FORMAT_LUMINANCE_INT16:
2364 case MESA_FORMAT_INTENSITY_INT16:
2365 *datatype = GL_SHORT;
2366 *comps = 1;
2367 return;
2368 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2369 *datatype = GL_SHORT;
2370 *comps = 2;
2371 return;
2372
2373 case MESA_FORMAT_ALPHA_INT32:
2374 case MESA_FORMAT_LUMINANCE_INT32:
2375 case MESA_FORMAT_INTENSITY_INT32:
2376 *datatype = GL_INT;
2377 *comps = 1;
2378 return;
2379 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2380 *datatype = GL_INT;
2381 *comps = 2;
2382 return;
2383
2384 case MESA_FORMAT_R_INT8:
2385 *datatype = GL_BYTE;
2386 *comps = 1;
2387 return;
2388 case MESA_FORMAT_RG_INT8:
2389 *datatype = GL_BYTE;
2390 *comps = 2;
2391 return;
2392 case MESA_FORMAT_RGB_INT8:
2393 *datatype = GL_BYTE;
2394 *comps = 3;
2395 return;
2396 case MESA_FORMAT_RGBA_INT8:
2397 *datatype = GL_BYTE;
2398 *comps = 4;
2399 return;
2400 case MESA_FORMAT_R_INT16:
2401 *datatype = GL_SHORT;
2402 *comps = 1;
2403 return;
2404 case MESA_FORMAT_RG_INT16:
2405 *datatype = GL_SHORT;
2406 *comps = 2;
2407 return;
2408 case MESA_FORMAT_RGB_INT16:
2409 *datatype = GL_SHORT;
2410 *comps = 3;
2411 return;
2412 case MESA_FORMAT_RGBA_INT16:
2413 *datatype = GL_SHORT;
2414 *comps = 4;
2415 return;
2416 case MESA_FORMAT_R_INT32:
2417 *datatype = GL_INT;
2418 *comps = 1;
2419 return;
2420 case MESA_FORMAT_RG_INT32:
2421 *datatype = GL_INT;
2422 *comps = 2;
2423 return;
2424 case MESA_FORMAT_RGB_INT32:
2425 *datatype = GL_INT;
2426 *comps = 3;
2427 return;
2428 case MESA_FORMAT_RGBA_INT32:
2429 *datatype = GL_INT;
2430 *comps = 4;
2431 return;
2432
2433 /**
2434 * \name Non-normalized unsigned integer formats.
2435 */
2436 case MESA_FORMAT_R_UINT8:
2437 *datatype = GL_UNSIGNED_BYTE;
2438 *comps = 1;
2439 return;
2440 case MESA_FORMAT_RG_UINT8:
2441 *datatype = GL_UNSIGNED_BYTE;
2442 *comps = 2;
2443 return;
2444 case MESA_FORMAT_RGB_UINT8:
2445 *datatype = GL_UNSIGNED_BYTE;
2446 *comps = 3;
2447 return;
2448 case MESA_FORMAT_RGBA_UINT8:
2449 *datatype = GL_UNSIGNED_BYTE;
2450 *comps = 4;
2451 return;
2452 case MESA_FORMAT_R_UINT16:
2453 *datatype = GL_UNSIGNED_SHORT;
2454 *comps = 1;
2455 return;
2456 case MESA_FORMAT_RG_UINT16:
2457 *datatype = GL_UNSIGNED_SHORT;
2458 *comps = 2;
2459 return;
2460 case MESA_FORMAT_RGB_UINT16:
2461 *datatype = GL_UNSIGNED_SHORT;
2462 *comps = 3;
2463 return;
2464 case MESA_FORMAT_RGBA_UINT16:
2465 *datatype = GL_UNSIGNED_SHORT;
2466 *comps = 4;
2467 return;
2468 case MESA_FORMAT_R_UINT32:
2469 *datatype = GL_UNSIGNED_INT;
2470 *comps = 1;
2471 return;
2472 case MESA_FORMAT_RG_UINT32:
2473 *datatype = GL_UNSIGNED_INT;
2474 *comps = 2;
2475 return;
2476 case MESA_FORMAT_RGB_UINT32:
2477 *datatype = GL_UNSIGNED_INT;
2478 *comps = 3;
2479 return;
2480 case MESA_FORMAT_RGBA_UINT32:
2481 *datatype = GL_UNSIGNED_INT;
2482 *comps = 4;
2483 return;
2484
2485 case MESA_FORMAT_RGB9_E5_FLOAT:
2486 *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
2487 *comps = 3;
2488 return;
2489
2490 case MESA_FORMAT_R11_G11_B10_FLOAT:
2491 *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
2492 *comps = 3;
2493 return;
2494
2495 case MESA_FORMAT_ARGB2101010_UINT:
2496 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2497 *comps = 4;
2498 return;
2499
2500 case MESA_FORMAT_COUNT:
2501 assert(0);
2502 return;
2503
2504 case MESA_FORMAT_NONE:
2505 /* For debug builds, warn if any formats are not handled */
2506 #ifdef DEBUG
2507 default:
2508 #endif
2509 _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
2510 _mesa_get_format_name(format));
2511 *datatype = 0;
2512 *comps = 1;
2513 }
2514 }
2515
2516 /**
2517 * Check if a gl_format exactly matches a GL formaat/type combination
2518 * such that we can use memcpy() from one to the other.
2519 * \param gl_format a MESA_FORMAT_x value
2520 * \param format the user-specified image format
2521 * \param type the user-specified image datatype
2522 * \param swapBytes typically the current pixel pack/unpack byteswap state
2523 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
2524 */
2525 GLboolean
2526 _mesa_format_matches_format_and_type(gl_format gl_format,
2527 GLenum format, GLenum type,
2528 GLboolean swapBytes)
2529 {
2530 const GLboolean littleEndian = _mesa_little_endian();
2531
2532 /* Note: When reading a GL format/type combination, the format lists channel
2533 * assignments from most significant channel in the type to least
2534 * significant. A type with _REV indicates that the assignments are
2535 * swapped, so they are listed from least significant to most significant.
2536 *
2537 * For sanity, please keep this switch statement ordered the same as the
2538 * enums in formats.h.
2539 */
2540
2541 switch (gl_format) {
2542
2543 case MESA_FORMAT_NONE:
2544 case MESA_FORMAT_COUNT:
2545 return GL_FALSE;
2546
2547 case MESA_FORMAT_RGBA8888:
2548 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8)
2549 return GL_TRUE;
2550
2551 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
2552 return GL_TRUE;
2553
2554 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV)
2555 return GL_TRUE;
2556
2557 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
2558 return GL_TRUE;
2559
2560 return GL_FALSE;
2561
2562 case MESA_FORMAT_RGBA8888_REV:
2563 return format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV;
2564
2565 case MESA_FORMAT_ARGB8888:
2566 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV)
2567 return GL_TRUE;
2568
2569 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
2570 return GL_TRUE;
2571
2572 return GL_FALSE;
2573
2574 case MESA_FORMAT_ARGB8888_REV:
2575 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8)
2576 return GL_TRUE;
2577
2578 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
2579 return GL_TRUE;
2580
2581 return GL_FALSE;
2582
2583 case MESA_FORMAT_RGBX8888:
2584 case MESA_FORMAT_RGBX8888_REV:
2585 return GL_FALSE;
2586
2587 case MESA_FORMAT_XRGB8888:
2588 case MESA_FORMAT_XRGB8888_REV:
2589 return GL_FALSE;
2590
2591 case MESA_FORMAT_RGB888:
2592 return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
2593
2594 case MESA_FORMAT_BGR888:
2595 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
2596
2597 case MESA_FORMAT_RGB565:
2598 return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
2599 case MESA_FORMAT_RGB565_REV:
2600 /* Some of the 16-bit MESA_FORMATs that would seem to correspond to
2601 * GL_UNSIGNED_SHORT_* are byte-swapped instead of channel-reversed,
2602 * according to formats.h, so they can't be matched.
2603 */
2604 return GL_FALSE;
2605
2606 case MESA_FORMAT_ARGB4444:
2607 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV;
2608 case MESA_FORMAT_ARGB4444_REV:
2609 return GL_FALSE;
2610
2611 case MESA_FORMAT_RGBA5551:
2612 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1;
2613
2614 case MESA_FORMAT_ARGB1555:
2615 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
2616 case MESA_FORMAT_ARGB1555_REV:
2617 return GL_FALSE;
2618
2619 case MESA_FORMAT_AL44:
2620 return GL_FALSE;
2621 case MESA_FORMAT_AL88:
2622 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
2623 case MESA_FORMAT_AL88_REV:
2624 return GL_FALSE;
2625
2626 case MESA_FORMAT_AL1616:
2627 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2628 case MESA_FORMAT_AL1616_REV:
2629 return GL_FALSE;
2630
2631 case MESA_FORMAT_RGB332:
2632 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
2633
2634 case MESA_FORMAT_A8:
2635 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
2636 case MESA_FORMAT_A16:
2637 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2638 case MESA_FORMAT_L8:
2639 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
2640 case MESA_FORMAT_L16:
2641 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && littleEndian;
2642 case MESA_FORMAT_I8:
2643 return format == GL_INTENSITY && type == GL_UNSIGNED_BYTE;
2644 case MESA_FORMAT_I16:
2645 return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT && littleEndian;
2646
2647 case MESA_FORMAT_YCBCR:
2648 case MESA_FORMAT_YCBCR_REV:
2649 return GL_FALSE;
2650
2651 case MESA_FORMAT_R8:
2652 return format == GL_RED && type == GL_UNSIGNED_BYTE;
2653 case MESA_FORMAT_GR88:
2654 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
2655 case MESA_FORMAT_RG88:
2656 return GL_FALSE;
2657
2658 case MESA_FORMAT_R16:
2659 return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian;
2660 case MESA_FORMAT_RG1616:
2661 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian;
2662 case MESA_FORMAT_RG1616_REV:
2663 return GL_FALSE;
2664
2665 case MESA_FORMAT_ARGB2101010:
2666 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV;
2667
2668 case MESA_FORMAT_Z24_S8:
2669 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8;
2670 case MESA_FORMAT_Z24_X8:
2671 case MESA_FORMAT_S8_Z24:
2672 return GL_FALSE;
2673
2674 case MESA_FORMAT_Z16:
2675 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT;
2676
2677 case MESA_FORMAT_X8_Z24:
2678 return GL_FALSE;
2679
2680 case MESA_FORMAT_Z32:
2681 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT;
2682
2683 case MESA_FORMAT_S8:
2684 return GL_FALSE;
2685
2686 case MESA_FORMAT_SRGB8:
2687 case MESA_FORMAT_SRGBA8:
2688 case MESA_FORMAT_SARGB8:
2689 case MESA_FORMAT_SL8:
2690 case MESA_FORMAT_SLA8:
2691 case MESA_FORMAT_SRGB_DXT1:
2692 case MESA_FORMAT_SRGBA_DXT1:
2693 case MESA_FORMAT_SRGBA_DXT3:
2694 case MESA_FORMAT_SRGBA_DXT5:
2695 return GL_FALSE;
2696
2697 case MESA_FORMAT_RGB_FXT1:
2698 case MESA_FORMAT_RGBA_FXT1:
2699 case MESA_FORMAT_RGB_DXT1:
2700 case MESA_FORMAT_RGBA_DXT1:
2701 case MESA_FORMAT_RGBA_DXT3:
2702 case MESA_FORMAT_RGBA_DXT5:
2703 return GL_FALSE;
2704
2705 case MESA_FORMAT_RGBA_FLOAT32:
2706 return format == GL_RGBA && type == GL_FLOAT;
2707 case MESA_FORMAT_RGBA_FLOAT16:
2708 return format == GL_RGBA && type == GL_HALF_FLOAT;
2709
2710 case MESA_FORMAT_RGB_FLOAT32:
2711 return format == GL_RGB && type == GL_FLOAT;
2712 case MESA_FORMAT_RGB_FLOAT16:
2713 return format == GL_RGB && type == GL_HALF_FLOAT;
2714
2715 case MESA_FORMAT_ALPHA_FLOAT32:
2716 return format == GL_ALPHA && type == GL_FLOAT;
2717 case MESA_FORMAT_ALPHA_FLOAT16:
2718 return format == GL_ALPHA && type == GL_HALF_FLOAT;
2719
2720 case MESA_FORMAT_LUMINANCE_FLOAT32:
2721 return format == GL_LUMINANCE && type == GL_FLOAT;
2722 case MESA_FORMAT_LUMINANCE_FLOAT16:
2723 return format == GL_LUMINANCE && type == GL_HALF_FLOAT;
2724
2725 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2726 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT;
2727 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2728 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT;
2729
2730 case MESA_FORMAT_INTENSITY_FLOAT32:
2731 return format == GL_INTENSITY && type == GL_FLOAT;
2732 case MESA_FORMAT_INTENSITY_FLOAT16:
2733 return format == GL_INTENSITY && type == GL_HALF_FLOAT;
2734
2735 case MESA_FORMAT_R_FLOAT32:
2736 return format == GL_RED && type == GL_FLOAT;
2737 case MESA_FORMAT_R_FLOAT16:
2738 return format == GL_RED && type == GL_HALF_FLOAT;
2739
2740 case MESA_FORMAT_RG_FLOAT32:
2741 return format == GL_RG && type == GL_FLOAT;
2742 case MESA_FORMAT_RG_FLOAT16:
2743 return format == GL_RG && type == GL_HALF_FLOAT;
2744
2745 /* FINISHME: What do we want to do for GL_EXT_texture_integer? */
2746 case MESA_FORMAT_ALPHA_UINT8:
2747 case MESA_FORMAT_ALPHA_UINT16:
2748 case MESA_FORMAT_ALPHA_UINT32:
2749 case MESA_FORMAT_ALPHA_INT8:
2750 case MESA_FORMAT_ALPHA_INT16:
2751 case MESA_FORMAT_ALPHA_INT32:
2752 return GL_FALSE;
2753
2754 case MESA_FORMAT_INTENSITY_UINT8:
2755 case MESA_FORMAT_INTENSITY_UINT16:
2756 case MESA_FORMAT_INTENSITY_UINT32:
2757 case MESA_FORMAT_INTENSITY_INT8:
2758 case MESA_FORMAT_INTENSITY_INT16:
2759 case MESA_FORMAT_INTENSITY_INT32:
2760 return GL_FALSE;
2761
2762 case MESA_FORMAT_LUMINANCE_UINT8:
2763 case MESA_FORMAT_LUMINANCE_UINT16:
2764 case MESA_FORMAT_LUMINANCE_UINT32:
2765 case MESA_FORMAT_LUMINANCE_INT8:
2766 case MESA_FORMAT_LUMINANCE_INT16:
2767 case MESA_FORMAT_LUMINANCE_INT32:
2768 return GL_FALSE;
2769
2770 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2771 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2772 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2773 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2774 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2775 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2776 return GL_FALSE;
2777
2778 case MESA_FORMAT_R_INT8:
2779 case MESA_FORMAT_RG_INT8:
2780 case MESA_FORMAT_RGB_INT8:
2781 case MESA_FORMAT_RGBA_INT8:
2782 case MESA_FORMAT_R_INT16:
2783 case MESA_FORMAT_RG_INT16:
2784 case MESA_FORMAT_RGB_INT16:
2785 case MESA_FORMAT_RGBA_INT16:
2786 case MESA_FORMAT_R_INT32:
2787 case MESA_FORMAT_RG_INT32:
2788 case MESA_FORMAT_RGB_INT32:
2789 case MESA_FORMAT_RGBA_INT32:
2790 return GL_FALSE;
2791
2792 case MESA_FORMAT_R_UINT8:
2793 case MESA_FORMAT_RG_UINT8:
2794 case MESA_FORMAT_RGB_UINT8:
2795 case MESA_FORMAT_RGBA_UINT8:
2796 case MESA_FORMAT_R_UINT16:
2797 case MESA_FORMAT_RG_UINT16:
2798 case MESA_FORMAT_RGB_UINT16:
2799 case MESA_FORMAT_RGBA_UINT16:
2800 case MESA_FORMAT_R_UINT32:
2801 case MESA_FORMAT_RG_UINT32:
2802 case MESA_FORMAT_RGB_UINT32:
2803 case MESA_FORMAT_RGBA_UINT32:
2804 return GL_FALSE;
2805
2806 case MESA_FORMAT_DUDV8:
2807 case MESA_FORMAT_SIGNED_R8:
2808 case MESA_FORMAT_SIGNED_RG88_REV:
2809 case MESA_FORMAT_SIGNED_RGBX8888:
2810 case MESA_FORMAT_SIGNED_RGBA8888:
2811 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2812 case MESA_FORMAT_SIGNED_R16:
2813 case MESA_FORMAT_SIGNED_GR1616:
2814 case MESA_FORMAT_SIGNED_RGB_16:
2815 case MESA_FORMAT_SIGNED_RGBA_16:
2816 case MESA_FORMAT_RGBA_16:
2817 /* FINISHME: SNORM */
2818 return GL_FALSE;
2819
2820 case MESA_FORMAT_RED_RGTC1:
2821 case MESA_FORMAT_SIGNED_RED_RGTC1:
2822 case MESA_FORMAT_RG_RGTC2:
2823 case MESA_FORMAT_SIGNED_RG_RGTC2:
2824 return GL_FALSE;
2825
2826 case MESA_FORMAT_L_LATC1:
2827 case MESA_FORMAT_SIGNED_L_LATC1:
2828 case MESA_FORMAT_LA_LATC2:
2829 case MESA_FORMAT_SIGNED_LA_LATC2:
2830 return GL_FALSE;
2831
2832 case MESA_FORMAT_ETC1_RGB8:
2833 return GL_FALSE;
2834
2835 case MESA_FORMAT_SIGNED_A8:
2836 case MESA_FORMAT_SIGNED_L8:
2837 case MESA_FORMAT_SIGNED_AL88:
2838 case MESA_FORMAT_SIGNED_I8:
2839 case MESA_FORMAT_SIGNED_A16:
2840 case MESA_FORMAT_SIGNED_L16:
2841 case MESA_FORMAT_SIGNED_AL1616:
2842 case MESA_FORMAT_SIGNED_I16:
2843 /* FINISHME: SNORM */
2844 return GL_FALSE;
2845
2846 case MESA_FORMAT_ARGB2101010_UINT:
2847 return GL_FALSE;
2848
2849 case MESA_FORMAT_RGB9_E5_FLOAT:
2850 return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV;
2851 case MESA_FORMAT_R11_G11_B10_FLOAT:
2852 return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV;
2853
2854 case MESA_FORMAT_Z32_FLOAT:
2855 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT;
2856
2857 case MESA_FORMAT_Z32_FLOAT_X24S8:
2858 return GL_FALSE;
2859 }
2860
2861 return GL_FALSE;
2862 }