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mesa: add glformats integer type/format detection routines
[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 #include "glformats.h"
32
33
34 /**
35 * Information about texture formats.
36 */
37 struct gl_format_info
38 {
39 gl_format Name;
40
41 /** text name for debugging */
42 const char *StrName;
43
44 /**
45 * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
46 * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
47 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL, GL_DUDV_ATI.
48 */
49 GLenum BaseFormat;
50
51 /**
52 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
53 * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
54 */
55 GLenum DataType;
56
57 GLubyte RedBits;
58 GLubyte GreenBits;
59 GLubyte BlueBits;
60 GLubyte AlphaBits;
61 GLubyte LuminanceBits;
62 GLubyte IntensityBits;
63 GLubyte IndexBits;
64 GLubyte DepthBits;
65 GLubyte StencilBits;
66
67 /**
68 * To describe compressed formats. If not compressed, Width=Height=1.
69 */
70 GLubyte BlockWidth, BlockHeight;
71 GLubyte BytesPerBlock;
72 };
73
74
75 /**
76 * Info about each format.
77 * These must be in the same order as the MESA_FORMAT_* enums so that
78 * we can do lookups without searching.
79 */
80 static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
81 {
82 {
83 MESA_FORMAT_NONE, /* Name */
84 "MESA_FORMAT_NONE", /* StrName */
85 GL_NONE, /* BaseFormat */
86 GL_NONE, /* DataType */
87 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
88 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
89 0, 0, 0 /* BlockWidth/Height,Bytes */
90 },
91 {
92 MESA_FORMAT_RGBA8888, /* Name */
93 "MESA_FORMAT_RGBA8888", /* StrName */
94 GL_RGBA, /* BaseFormat */
95 GL_UNSIGNED_NORMALIZED, /* DataType */
96 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
97 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
98 1, 1, 4 /* BlockWidth/Height,Bytes */
99 },
100 {
101 MESA_FORMAT_RGBA8888_REV, /* Name */
102 "MESA_FORMAT_RGBA8888_REV", /* StrName */
103 GL_RGBA, /* BaseFormat */
104 GL_UNSIGNED_NORMALIZED, /* DataType */
105 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
106 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
107 1, 1, 4 /* BlockWidth/Height,Bytes */
108 },
109 {
110 MESA_FORMAT_ARGB8888, /* Name */
111 "MESA_FORMAT_ARGB8888", /* StrName */
112 GL_RGBA, /* BaseFormat */
113 GL_UNSIGNED_NORMALIZED, /* DataType */
114 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
115 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
116 1, 1, 4 /* BlockWidth/Height,Bytes */
117 },
118 {
119 MESA_FORMAT_ARGB8888_REV, /* Name */
120 "MESA_FORMAT_ARGB8888_REV", /* StrName */
121 GL_RGBA, /* BaseFormat */
122 GL_UNSIGNED_NORMALIZED, /* DataType */
123 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
124 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
125 1, 1, 4 /* BlockWidth/Height,Bytes */
126 },
127 {
128 MESA_FORMAT_RGBX8888, /* Name */
129 "MESA_FORMAT_RGBX8888", /* StrName */
130 GL_RGB, /* BaseFormat */
131 GL_UNSIGNED_NORMALIZED, /* DataType */
132 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
133 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
134 1, 1, 4 /* BlockWidth/Height,Bytes */
135 },
136 {
137 MESA_FORMAT_RGBX8888_REV, /* Name */
138 "MESA_FORMAT_RGBX8888_REV", /* StrName */
139 GL_RGB, /* BaseFormat */
140 GL_UNSIGNED_NORMALIZED, /* DataType */
141 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
142 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
143 1, 1, 4 /* BlockWidth/Height,Bytes */
144 },
145 {
146 MESA_FORMAT_XRGB8888, /* Name */
147 "MESA_FORMAT_XRGB8888", /* StrName */
148 GL_RGB, /* BaseFormat */
149 GL_UNSIGNED_NORMALIZED, /* DataType */
150 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
151 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
152 1, 1, 4 /* BlockWidth/Height,Bytes */
153 },
154 {
155 MESA_FORMAT_XRGB8888_REV, /* Name */
156 "MESA_FORMAT_XRGB8888_REV", /* StrName */
157 GL_RGB, /* BaseFormat */
158 GL_UNSIGNED_NORMALIZED, /* DataType */
159 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
160 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
161 1, 1, 4 /* BlockWidth/Height,Bytes */
162 },
163 {
164 MESA_FORMAT_RGB888, /* Name */
165 "MESA_FORMAT_RGB888", /* StrName */
166 GL_RGB, /* BaseFormat */
167 GL_UNSIGNED_NORMALIZED, /* DataType */
168 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
169 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
170 1, 1, 3 /* BlockWidth/Height,Bytes */
171 },
172 {
173 MESA_FORMAT_BGR888, /* Name */
174 "MESA_FORMAT_BGR888", /* StrName */
175 GL_RGB, /* BaseFormat */
176 GL_UNSIGNED_NORMALIZED, /* DataType */
177 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
178 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
179 1, 1, 3 /* BlockWidth/Height,Bytes */
180 },
181 {
182 MESA_FORMAT_RGB565, /* Name */
183 "MESA_FORMAT_RGB565", /* StrName */
184 GL_RGB, /* BaseFormat */
185 GL_UNSIGNED_NORMALIZED, /* DataType */
186 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
187 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
188 1, 1, 2 /* BlockWidth/Height,Bytes */
189 },
190 {
191 MESA_FORMAT_RGB565_REV, /* Name */
192 "MESA_FORMAT_RGB565_REV", /* StrName */
193 GL_RGB, /* BaseFormat */
194 GL_UNSIGNED_NORMALIZED, /* DataType */
195 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
196 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
197 1, 1, 2 /* BlockWidth/Height,Bytes */
198 },
199 {
200 MESA_FORMAT_ARGB4444, /* Name */
201 "MESA_FORMAT_ARGB4444", /* StrName */
202 GL_RGBA, /* BaseFormat */
203 GL_UNSIGNED_NORMALIZED, /* DataType */
204 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
205 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
206 1, 1, 2 /* BlockWidth/Height,Bytes */
207 },
208 {
209 MESA_FORMAT_ARGB4444_REV, /* Name */
210 "MESA_FORMAT_ARGB4444_REV", /* StrName */
211 GL_RGBA, /* BaseFormat */
212 GL_UNSIGNED_NORMALIZED, /* DataType */
213 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
214 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
215 1, 1, 2 /* BlockWidth/Height,Bytes */
216 },
217 {
218 MESA_FORMAT_RGBA5551, /* Name */
219 "MESA_FORMAT_RGBA5551", /* StrName */
220 GL_RGBA, /* BaseFormat */
221 GL_UNSIGNED_NORMALIZED, /* DataType */
222 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
223 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
224 1, 1, 2 /* BlockWidth/Height,Bytes */
225 },
226 {
227 MESA_FORMAT_ARGB1555, /* Name */
228 "MESA_FORMAT_ARGB1555", /* StrName */
229 GL_RGBA, /* BaseFormat */
230 GL_UNSIGNED_NORMALIZED, /* DataType */
231 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
232 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
233 1, 1, 2 /* BlockWidth/Height,Bytes */
234 },
235 {
236 MESA_FORMAT_ARGB1555_REV, /* Name */
237 "MESA_FORMAT_ARGB1555_REV", /* StrName */
238 GL_RGBA, /* BaseFormat */
239 GL_UNSIGNED_NORMALIZED, /* DataType */
240 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
241 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
242 1, 1, 2 /* BlockWidth/Height,Bytes */
243 },
244 {
245 MESA_FORMAT_AL44, /* Name */
246 "MESA_FORMAT_AL44", /* StrName */
247 GL_LUMINANCE_ALPHA, /* BaseFormat */
248 GL_UNSIGNED_NORMALIZED, /* DataType */
249 0, 0, 0, 4, /* Red/Green/Blue/AlphaBits */
250 4, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
251 1, 1, 1 /* BlockWidth/Height,Bytes */
252 },
253 {
254 MESA_FORMAT_AL88, /* Name */
255 "MESA_FORMAT_AL88", /* StrName */
256 GL_LUMINANCE_ALPHA, /* BaseFormat */
257 GL_UNSIGNED_NORMALIZED, /* DataType */
258 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
259 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
260 1, 1, 2 /* BlockWidth/Height,Bytes */
261 },
262 {
263 MESA_FORMAT_AL88_REV, /* Name */
264 "MESA_FORMAT_AL88_REV", /* StrName */
265 GL_LUMINANCE_ALPHA, /* BaseFormat */
266 GL_UNSIGNED_NORMALIZED, /* DataType */
267 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
268 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
269 1, 1, 2 /* BlockWidth/Height,Bytes */
270 },
271 {
272 MESA_FORMAT_AL1616, /* Name */
273 "MESA_FORMAT_AL1616", /* StrName */
274 GL_LUMINANCE_ALPHA, /* BaseFormat */
275 GL_UNSIGNED_NORMALIZED, /* DataType */
276 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
277 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
278 1, 1, 4 /* BlockWidth/Height,Bytes */
279 },
280 {
281 MESA_FORMAT_AL1616_REV, /* Name */
282 "MESA_FORMAT_AL1616_REV", /* StrName */
283 GL_LUMINANCE_ALPHA, /* BaseFormat */
284 GL_UNSIGNED_NORMALIZED, /* DataType */
285 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
286 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
287 1, 1, 4 /* BlockWidth/Height,Bytes */
288 },
289 {
290 MESA_FORMAT_RGB332, /* Name */
291 "MESA_FORMAT_RGB332", /* StrName */
292 GL_RGB, /* BaseFormat */
293 GL_UNSIGNED_NORMALIZED, /* DataType */
294 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
295 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
296 1, 1, 1 /* BlockWidth/Height,Bytes */
297 },
298 {
299 MESA_FORMAT_A8, /* Name */
300 "MESA_FORMAT_A8", /* StrName */
301 GL_ALPHA, /* BaseFormat */
302 GL_UNSIGNED_NORMALIZED, /* DataType */
303 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
304 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
305 1, 1, 1 /* BlockWidth/Height,Bytes */
306 },
307 {
308 MESA_FORMAT_A16, /* Name */
309 "MESA_FORMAT_A16", /* StrName */
310 GL_ALPHA, /* BaseFormat */
311 GL_UNSIGNED_NORMALIZED, /* DataType */
312 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
313 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
314 1, 1, 2 /* BlockWidth/Height,Bytes */
315 },
316 {
317 MESA_FORMAT_L8, /* Name */
318 "MESA_FORMAT_L8", /* StrName */
319 GL_LUMINANCE, /* BaseFormat */
320 GL_UNSIGNED_NORMALIZED, /* DataType */
321 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
322 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
323 1, 1, 1 /* BlockWidth/Height,Bytes */
324 },
325 {
326 MESA_FORMAT_L16, /* Name */
327 "MESA_FORMAT_L16", /* StrName */
328 GL_LUMINANCE, /* BaseFormat */
329 GL_UNSIGNED_NORMALIZED, /* DataType */
330 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
331 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
332 1, 1, 2 /* BlockWidth/Height,Bytes */
333 },
334 {
335 MESA_FORMAT_I8, /* Name */
336 "MESA_FORMAT_I8", /* StrName */
337 GL_INTENSITY, /* BaseFormat */
338 GL_UNSIGNED_NORMALIZED, /* DataType */
339 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
340 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
341 1, 1, 1 /* BlockWidth/Height,Bytes */
342 },
343 {
344 MESA_FORMAT_I16, /* Name */
345 "MESA_FORMAT_I16", /* StrName */
346 GL_INTENSITY, /* BaseFormat */
347 GL_UNSIGNED_NORMALIZED, /* DataType */
348 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
349 0, 16, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
350 1, 1, 2 /* BlockWidth/Height,Bytes */
351 },
352 {
353 MESA_FORMAT_YCBCR, /* Name */
354 "MESA_FORMAT_YCBCR", /* StrName */
355 GL_YCBCR_MESA, /* BaseFormat */
356 GL_UNSIGNED_NORMALIZED, /* DataType */
357 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
358 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
359 1, 1, 2 /* BlockWidth/Height,Bytes */
360 },
361 {
362 MESA_FORMAT_YCBCR_REV, /* Name */
363 "MESA_FORMAT_YCBCR_REV", /* StrName */
364 GL_YCBCR_MESA, /* BaseFormat */
365 GL_UNSIGNED_NORMALIZED, /* DataType */
366 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
367 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
368 1, 1, 2 /* BlockWidth/Height,Bytes */
369 },
370 {
371 MESA_FORMAT_R8,
372 "MESA_FORMAT_R8",
373 GL_RED,
374 GL_UNSIGNED_NORMALIZED,
375 8, 0, 0, 0,
376 0, 0, 0, 0, 0,
377 1, 1, 1
378 },
379 {
380 MESA_FORMAT_GR88,
381 "MESA_FORMAT_GR88",
382 GL_RG,
383 GL_UNSIGNED_NORMALIZED,
384 8, 8, 0, 0,
385 0, 0, 0, 0, 0,
386 1, 1, 2
387 },
388 {
389 MESA_FORMAT_RG88,
390 "MESA_FORMAT_RG88",
391 GL_RG,
392 GL_UNSIGNED_NORMALIZED,
393 8, 8, 0, 0,
394 0, 0, 0, 0, 0,
395 1, 1, 2
396 },
397 {
398 MESA_FORMAT_R16,
399 "MESA_FORMAT_R16",
400 GL_RED,
401 GL_UNSIGNED_NORMALIZED,
402 16, 0, 0, 0,
403 0, 0, 0, 0, 0,
404 1, 1, 2
405 },
406 {
407 MESA_FORMAT_RG1616,
408 "MESA_FORMAT_RG1616",
409 GL_RG,
410 GL_UNSIGNED_NORMALIZED,
411 16, 16, 0, 0,
412 0, 0, 0, 0, 0,
413 1, 1, 4
414 },
415 {
416 MESA_FORMAT_RG1616_REV,
417 "MESA_FORMAT_RG1616_REV",
418 GL_RG,
419 GL_UNSIGNED_NORMALIZED,
420 16, 16, 0, 0,
421 0, 0, 0, 0, 0,
422 1, 1, 4
423 },
424 {
425 MESA_FORMAT_ARGB2101010,
426 "MESA_FORMAT_ARGB2101010",
427 GL_RGBA,
428 GL_UNSIGNED_NORMALIZED,
429 10, 10, 10, 2,
430 0, 0, 0, 0, 0,
431 1, 1, 4
432 },
433 {
434 MESA_FORMAT_Z24_S8, /* Name */
435 "MESA_FORMAT_Z24_S8", /* StrName */
436 GL_DEPTH_STENCIL, /* BaseFormat */
437 GL_UNSIGNED_NORMALIZED, /* DataType */
438 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
439 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
440 1, 1, 4 /* BlockWidth/Height,Bytes */
441 },
442 {
443 MESA_FORMAT_S8_Z24, /* Name */
444 "MESA_FORMAT_S8_Z24", /* StrName */
445 GL_DEPTH_STENCIL, /* BaseFormat */
446 GL_UNSIGNED_NORMALIZED, /* DataType */
447 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
448 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
449 1, 1, 4 /* BlockWidth/Height,Bytes */
450 },
451 {
452 MESA_FORMAT_Z16, /* Name */
453 "MESA_FORMAT_Z16", /* StrName */
454 GL_DEPTH_COMPONENT, /* BaseFormat */
455 GL_UNSIGNED_NORMALIZED, /* DataType */
456 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
457 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
458 1, 1, 2 /* BlockWidth/Height,Bytes */
459 },
460 {
461 MESA_FORMAT_X8_Z24, /* Name */
462 "MESA_FORMAT_X8_Z24", /* StrName */
463 GL_DEPTH_COMPONENT, /* BaseFormat */
464 GL_UNSIGNED_NORMALIZED, /* DataType */
465 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
466 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
467 1, 1, 4 /* BlockWidth/Height,Bytes */
468 },
469 {
470 MESA_FORMAT_Z24_X8, /* Name */
471 "MESA_FORMAT_Z24_X8", /* StrName */
472 GL_DEPTH_COMPONENT, /* BaseFormat */
473 GL_UNSIGNED_NORMALIZED, /* DataType */
474 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
475 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
476 1, 1, 4 /* BlockWidth/Height,Bytes */
477 },
478 {
479 MESA_FORMAT_Z32, /* Name */
480 "MESA_FORMAT_Z32", /* StrName */
481 GL_DEPTH_COMPONENT, /* BaseFormat */
482 GL_UNSIGNED_NORMALIZED, /* DataType */
483 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
484 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
485 1, 1, 4 /* BlockWidth/Height,Bytes */
486 },
487 {
488 MESA_FORMAT_S8, /* Name */
489 "MESA_FORMAT_S8", /* StrName */
490 GL_STENCIL_INDEX, /* BaseFormat */
491 GL_UNSIGNED_INT, /* DataType */
492 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
493 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
494 1, 1, 1 /* BlockWidth/Height,Bytes */
495 },
496 {
497 MESA_FORMAT_SRGB8,
498 "MESA_FORMAT_SRGB8",
499 GL_RGB,
500 GL_UNSIGNED_NORMALIZED,
501 8, 8, 8, 0,
502 0, 0, 0, 0, 0,
503 1, 1, 3
504 },
505 {
506 MESA_FORMAT_SRGBA8,
507 "MESA_FORMAT_SRGBA8",
508 GL_RGBA,
509 GL_UNSIGNED_NORMALIZED,
510 8, 8, 8, 8,
511 0, 0, 0, 0, 0,
512 1, 1, 4
513 },
514 {
515 MESA_FORMAT_SARGB8,
516 "MESA_FORMAT_SARGB8",
517 GL_RGBA,
518 GL_UNSIGNED_NORMALIZED,
519 8, 8, 8, 8,
520 0, 0, 0, 0, 0,
521 1, 1, 4
522 },
523 {
524 MESA_FORMAT_SL8,
525 "MESA_FORMAT_SL8",
526 GL_LUMINANCE,
527 GL_UNSIGNED_NORMALIZED,
528 0, 0, 0, 0,
529 8, 0, 0, 0, 0,
530 1, 1, 1
531 },
532 {
533 MESA_FORMAT_SLA8,
534 "MESA_FORMAT_SLA8",
535 GL_LUMINANCE_ALPHA,
536 GL_UNSIGNED_NORMALIZED,
537 0, 0, 0, 8,
538 8, 0, 0, 0, 0,
539 1, 1, 2
540 },
541 {
542 MESA_FORMAT_SRGB_DXT1, /* Name */
543 "MESA_FORMAT_SRGB_DXT1", /* StrName */
544 GL_RGB, /* BaseFormat */
545 GL_UNSIGNED_NORMALIZED, /* DataType */
546 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
547 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
548 4, 4, 8 /* 8 bytes per 4x4 block */
549 },
550 {
551 MESA_FORMAT_SRGBA_DXT1,
552 "MESA_FORMAT_SRGBA_DXT1",
553 GL_RGBA,
554 GL_UNSIGNED_NORMALIZED,
555 4, 4, 4, 4,
556 0, 0, 0, 0, 0,
557 4, 4, 8 /* 8 bytes per 4x4 block */
558 },
559 {
560 MESA_FORMAT_SRGBA_DXT3,
561 "MESA_FORMAT_SRGBA_DXT3",
562 GL_RGBA,
563 GL_UNSIGNED_NORMALIZED,
564 4, 4, 4, 4,
565 0, 0, 0, 0, 0,
566 4, 4, 16 /* 16 bytes per 4x4 block */
567 },
568 {
569 MESA_FORMAT_SRGBA_DXT5,
570 "MESA_FORMAT_SRGBA_DXT5",
571 GL_RGBA,
572 GL_UNSIGNED_NORMALIZED,
573 4, 4, 4, 4,
574 0, 0, 0, 0, 0,
575 4, 4, 16 /* 16 bytes per 4x4 block */
576 },
577
578 {
579 MESA_FORMAT_RGB_FXT1,
580 "MESA_FORMAT_RGB_FXT1",
581 GL_RGB,
582 GL_UNSIGNED_NORMALIZED,
583 4, 4, 4, 0, /* approx Red/Green/BlueBits */
584 0, 0, 0, 0, 0,
585 8, 4, 16 /* 16 bytes per 8x4 block */
586 },
587 {
588 MESA_FORMAT_RGBA_FXT1,
589 "MESA_FORMAT_RGBA_FXT1",
590 GL_RGBA,
591 GL_UNSIGNED_NORMALIZED,
592 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
593 0, 0, 0, 0, 0,
594 8, 4, 16 /* 16 bytes per 8x4 block */
595 },
596
597 {
598 MESA_FORMAT_RGB_DXT1, /* Name */
599 "MESA_FORMAT_RGB_DXT1", /* StrName */
600 GL_RGB, /* BaseFormat */
601 GL_UNSIGNED_NORMALIZED, /* DataType */
602 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
603 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
604 4, 4, 8 /* 8 bytes per 4x4 block */
605 },
606 {
607 MESA_FORMAT_RGBA_DXT1,
608 "MESA_FORMAT_RGBA_DXT1",
609 GL_RGBA,
610 GL_UNSIGNED_NORMALIZED,
611 4, 4, 4, 4,
612 0, 0, 0, 0, 0,
613 4, 4, 8 /* 8 bytes per 4x4 block */
614 },
615 {
616 MESA_FORMAT_RGBA_DXT3,
617 "MESA_FORMAT_RGBA_DXT3",
618 GL_RGBA,
619 GL_UNSIGNED_NORMALIZED,
620 4, 4, 4, 4,
621 0, 0, 0, 0, 0,
622 4, 4, 16 /* 16 bytes per 4x4 block */
623 },
624 {
625 MESA_FORMAT_RGBA_DXT5,
626 "MESA_FORMAT_RGBA_DXT5",
627 GL_RGBA,
628 GL_UNSIGNED_NORMALIZED,
629 4, 4, 4, 4,
630 0, 0, 0, 0, 0,
631 4, 4, 16 /* 16 bytes per 4x4 block */
632 },
633 {
634 MESA_FORMAT_RGBA_FLOAT32,
635 "MESA_FORMAT_RGBA_FLOAT32",
636 GL_RGBA,
637 GL_FLOAT,
638 32, 32, 32, 32,
639 0, 0, 0, 0, 0,
640 1, 1, 16
641 },
642 {
643 MESA_FORMAT_RGBA_FLOAT16,
644 "MESA_FORMAT_RGBA_FLOAT16",
645 GL_RGBA,
646 GL_FLOAT,
647 16, 16, 16, 16,
648 0, 0, 0, 0, 0,
649 1, 1, 8
650 },
651 {
652 MESA_FORMAT_RGB_FLOAT32,
653 "MESA_FORMAT_RGB_FLOAT32",
654 GL_RGB,
655 GL_FLOAT,
656 32, 32, 32, 0,
657 0, 0, 0, 0, 0,
658 1, 1, 12
659 },
660 {
661 MESA_FORMAT_RGB_FLOAT16,
662 "MESA_FORMAT_RGB_FLOAT16",
663 GL_RGB,
664 GL_FLOAT,
665 16, 16, 16, 0,
666 0, 0, 0, 0, 0,
667 1, 1, 6
668 },
669 {
670 MESA_FORMAT_ALPHA_FLOAT32,
671 "MESA_FORMAT_ALPHA_FLOAT32",
672 GL_ALPHA,
673 GL_FLOAT,
674 0, 0, 0, 32,
675 0, 0, 0, 0, 0,
676 1, 1, 4
677 },
678 {
679 MESA_FORMAT_ALPHA_FLOAT16,
680 "MESA_FORMAT_ALPHA_FLOAT16",
681 GL_ALPHA,
682 GL_FLOAT,
683 0, 0, 0, 16,
684 0, 0, 0, 0, 0,
685 1, 1, 2
686 },
687 {
688 MESA_FORMAT_LUMINANCE_FLOAT32,
689 "MESA_FORMAT_LUMINANCE_FLOAT32",
690 GL_LUMINANCE,
691 GL_FLOAT,
692 0, 0, 0, 0,
693 32, 0, 0, 0, 0,
694 1, 1, 4
695 },
696 {
697 MESA_FORMAT_LUMINANCE_FLOAT16,
698 "MESA_FORMAT_LUMINANCE_FLOAT16",
699 GL_LUMINANCE,
700 GL_FLOAT,
701 0, 0, 0, 0,
702 16, 0, 0, 0, 0,
703 1, 1, 2
704 },
705 {
706 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
707 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
708 GL_LUMINANCE_ALPHA,
709 GL_FLOAT,
710 0, 0, 0, 32,
711 32, 0, 0, 0, 0,
712 1, 1, 8
713 },
714 {
715 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
716 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
717 GL_LUMINANCE_ALPHA,
718 GL_FLOAT,
719 0, 0, 0, 16,
720 16, 0, 0, 0, 0,
721 1, 1, 4
722 },
723 {
724 MESA_FORMAT_INTENSITY_FLOAT32,
725 "MESA_FORMAT_INTENSITY_FLOAT32",
726 GL_INTENSITY,
727 GL_FLOAT,
728 0, 0, 0, 0,
729 0, 32, 0, 0, 0,
730 1, 1, 4
731 },
732 {
733 MESA_FORMAT_INTENSITY_FLOAT16,
734 "MESA_FORMAT_INTENSITY_FLOAT16",
735 GL_INTENSITY,
736 GL_FLOAT,
737 0, 0, 0, 0,
738 0, 16, 0, 0, 0,
739 1, 1, 2
740 },
741 {
742 MESA_FORMAT_R_FLOAT32,
743 "MESA_FORMAT_R_FLOAT32",
744 GL_RED,
745 GL_FLOAT,
746 32, 0, 0, 0,
747 0, 0, 0, 0, 0,
748 1, 1, 4
749 },
750 {
751 MESA_FORMAT_R_FLOAT16,
752 "MESA_FORMAT_R_FLOAT16",
753 GL_RED,
754 GL_FLOAT,
755 16, 0, 0, 0,
756 0, 0, 0, 0, 0,
757 1, 1, 2
758 },
759 {
760 MESA_FORMAT_RG_FLOAT32,
761 "MESA_FORMAT_RG_FLOAT32",
762 GL_RG,
763 GL_FLOAT,
764 32, 32, 0, 0,
765 0, 0, 0, 0, 0,
766 1, 1, 8
767 },
768 {
769 MESA_FORMAT_RG_FLOAT16,
770 "MESA_FORMAT_RG_FLOAT16",
771 GL_RG,
772 GL_FLOAT,
773 16, 16, 0, 0,
774 0, 0, 0, 0, 0,
775 1, 1, 4
776 },
777
778 /* unnormalized signed int formats */
779 /* unnormalized unsigned int formats */
780 {
781 MESA_FORMAT_ALPHA_UINT8,
782 "MESA_FORMAT_ALPHA_UINT8",
783 GL_ALPHA,
784 GL_UNSIGNED_INT,
785 0, 0, 0, 8,
786 0, 0, 0, 0, 0,
787 1, 1, 1
788 },
789 {
790 MESA_FORMAT_ALPHA_UINT16,
791 "MESA_FORMAT_ALPHA_UINT16",
792 GL_ALPHA,
793 GL_UNSIGNED_INT,
794 0, 0, 0, 16,
795 0, 0, 0, 0, 0,
796 1, 1, 2
797 },
798 {
799 MESA_FORMAT_ALPHA_UINT32,
800 "MESA_FORMAT_ALPHA_UINT32",
801 GL_ALPHA,
802 GL_UNSIGNED_INT,
803 0, 0, 0, 32,
804 0, 0, 0, 0, 0,
805 1, 1, 4
806 },
807 {
808 MESA_FORMAT_ALPHA_INT8,
809 "MESA_FORMAT_ALPHA_INT8",
810 GL_ALPHA,
811 GL_INT,
812 0, 0, 0, 8,
813 0, 0, 0, 0, 0,
814 1, 1, 1
815 },
816 {
817 MESA_FORMAT_ALPHA_INT16,
818 "MESA_FORMAT_ALPHA_INT16",
819 GL_ALPHA,
820 GL_INT,
821 0, 0, 0, 16,
822 0, 0, 0, 0, 0,
823 1, 1, 2
824 },
825 {
826 MESA_FORMAT_ALPHA_INT32,
827 "MESA_FORMAT_ALPHA_INT32",
828 GL_ALPHA,
829 GL_INT,
830 0, 0, 0, 32,
831 0, 0, 0, 0, 0,
832 1, 1, 4
833 },
834 {
835 MESA_FORMAT_INTENSITY_UINT8,
836 "MESA_FORMAT_INTENSITY_UINT8",
837 GL_INTENSITY,
838 GL_UNSIGNED_INT,
839 0, 0, 0, 0,
840 0, 8, 0, 0, 0,
841 1, 1, 1
842 },
843 {
844 MESA_FORMAT_INTENSITY_UINT16,
845 "MESA_FORMAT_INTENSITY_UINT16",
846 GL_INTENSITY,
847 GL_UNSIGNED_INT,
848 0, 0, 0, 0,
849 0, 16, 0, 0, 0,
850 1, 1, 2
851 },
852 {
853 MESA_FORMAT_INTENSITY_UINT32,
854 "MESA_FORMAT_INTENSITY_UINT32",
855 GL_INTENSITY,
856 GL_UNSIGNED_INT,
857 0, 0, 0, 0,
858 0, 32, 0, 0, 0,
859 1, 1, 4
860 },
861 {
862 MESA_FORMAT_INTENSITY_INT8,
863 "MESA_FORMAT_INTENSITY_INT8",
864 GL_INTENSITY,
865 GL_INT,
866 0, 0, 0, 0,
867 0, 8, 0, 0, 0,
868 1, 1, 1
869 },
870 {
871 MESA_FORMAT_INTENSITY_INT16,
872 "MESA_FORMAT_INTENSITY_INT16",
873 GL_INTENSITY,
874 GL_INT,
875 0, 0, 0, 0,
876 0, 16, 0, 0, 0,
877 1, 1, 2
878 },
879 {
880 MESA_FORMAT_INTENSITY_INT32,
881 "MESA_FORMAT_INTENSITY_INT32",
882 GL_INTENSITY,
883 GL_INT,
884 0, 0, 0, 0,
885 0, 32, 0, 0, 0,
886 1, 1, 4
887 },
888 {
889 MESA_FORMAT_LUMINANCE_UINT8,
890 "MESA_FORMAT_LUMINANCE_UINT8",
891 GL_LUMINANCE,
892 GL_UNSIGNED_INT,
893 0, 0, 0, 0,
894 8, 0, 0, 0, 0,
895 1, 1, 1
896 },
897 {
898 MESA_FORMAT_LUMINANCE_UINT16,
899 "MESA_FORMAT_LUMINANCE_UINT16",
900 GL_LUMINANCE,
901 GL_UNSIGNED_INT,
902 0, 0, 0, 0,
903 16, 0, 0, 0, 0,
904 1, 1, 2
905 },
906 {
907 MESA_FORMAT_LUMINANCE_UINT32,
908 "MESA_FORMAT_LUMINANCE_UINT32",
909 GL_LUMINANCE,
910 GL_UNSIGNED_INT,
911 0, 0, 0, 0,
912 32, 0, 0, 0, 0,
913 1, 1, 4
914 },
915 {
916 MESA_FORMAT_LUMINANCE_INT8,
917 "MESA_FORMAT_LUMINANCE_INT8",
918 GL_LUMINANCE,
919 GL_INT,
920 0, 0, 0, 0,
921 8, 0, 0, 0, 0,
922 1, 1, 1
923 },
924 {
925 MESA_FORMAT_LUMINANCE_INT16,
926 "MESA_FORMAT_LUMINANCE_INT16",
927 GL_LUMINANCE,
928 GL_INT,
929 0, 0, 0, 0,
930 16, 0, 0, 0, 0,
931 1, 1, 2
932 },
933 {
934 MESA_FORMAT_LUMINANCE_INT32,
935 "MESA_FORMAT_LUMINANCE_INT32",
936 GL_LUMINANCE,
937 GL_INT,
938 0, 0, 0, 0,
939 32, 0, 0, 0, 0,
940 1, 1, 4
941 },
942 {
943 MESA_FORMAT_LUMINANCE_ALPHA_UINT8,
944 "MESA_FORMAT_LUMINANCE_ALPHA_UINT8",
945 GL_LUMINANCE_ALPHA,
946 GL_UNSIGNED_INT,
947 0, 0, 0, 8,
948 8, 0, 0, 0, 0,
949 1, 1, 2
950 },
951 {
952 MESA_FORMAT_LUMINANCE_ALPHA_UINT16,
953 "MESA_FORMAT_LUMINANCE_ALPHA_UINT16",
954 GL_LUMINANCE_ALPHA,
955 GL_UNSIGNED_INT,
956 0, 0, 0, 16,
957 16, 0, 0, 0, 0,
958 1, 1, 4
959 },
960 {
961 MESA_FORMAT_LUMINANCE_ALPHA_UINT32,
962 "MESA_FORMAT_LUMINANCE_ALPHA_UINT32",
963 GL_LUMINANCE_ALPHA,
964 GL_UNSIGNED_INT,
965 0, 0, 0, 32,
966 32, 0, 0, 0, 0,
967 1, 1, 8
968 },
969 {
970 MESA_FORMAT_LUMINANCE_ALPHA_INT8,
971 "MESA_FORMAT_LUMINANCE_ALPHA_INT8",
972 GL_LUMINANCE_ALPHA,
973 GL_INT,
974 0, 0, 0, 8,
975 8, 0, 0, 0, 0,
976 1, 1, 2
977 },
978 {
979 MESA_FORMAT_LUMINANCE_ALPHA_INT16,
980 "MESA_FORMAT_LUMINANCE_ALPHA_INT16",
981 GL_LUMINANCE_ALPHA,
982 GL_INT,
983 0, 0, 0, 16,
984 16, 0, 0, 0, 0,
985 1, 1, 4
986 },
987 {
988 MESA_FORMAT_LUMINANCE_ALPHA_INT32,
989 "MESA_FORMAT_LUMINANCE_ALPHA_INT32",
990 GL_LUMINANCE_ALPHA,
991 GL_INT,
992 0, 0, 0, 32,
993 32, 0, 0, 0, 0,
994 1, 1, 8
995 },
996
997 {
998 MESA_FORMAT_R_INT8,
999 "MESA_FORMAT_R_INT8",
1000 GL_RED,
1001 GL_INT,
1002 8, 0, 0, 0,
1003 0, 0, 0, 0, 0,
1004 1, 1, 1
1005 },
1006 {
1007 MESA_FORMAT_RG_INT8,
1008 "MESA_FORMAT_RG_INT8",
1009 GL_RG,
1010 GL_INT,
1011 8, 8, 0, 0,
1012 0, 0, 0, 0, 0,
1013 1, 1, 2
1014 },
1015 {
1016 MESA_FORMAT_RGB_INT8,
1017 "MESA_FORMAT_RGB_INT8",
1018 GL_RGB,
1019 GL_INT,
1020 8, 8, 8, 0,
1021 0, 0, 0, 0, 0,
1022 1, 1, 3
1023 },
1024 {
1025 MESA_FORMAT_RGBA_INT8,
1026 "MESA_FORMAT_RGBA_INT8",
1027 GL_RGBA,
1028 GL_INT,
1029 8, 8, 8, 8,
1030 0, 0, 0, 0, 0,
1031 1, 1, 4
1032 },
1033 {
1034 MESA_FORMAT_R_INT16,
1035 "MESA_FORMAT_R_INT16",
1036 GL_RED,
1037 GL_INT,
1038 16, 0, 0, 0,
1039 0, 0, 0, 0, 0,
1040 1, 1, 2
1041 },
1042 {
1043 MESA_FORMAT_RG_INT16,
1044 "MESA_FORMAT_RG_INT16",
1045 GL_RG,
1046 GL_INT,
1047 16, 16, 0, 0,
1048 0, 0, 0, 0, 0,
1049 1, 1, 4
1050 },
1051 {
1052 MESA_FORMAT_RGB_INT16,
1053 "MESA_FORMAT_RGB_INT16",
1054 GL_RGB,
1055 GL_INT,
1056 16, 16, 16, 0,
1057 0, 0, 0, 0, 0,
1058 1, 1, 6
1059 },
1060 {
1061 MESA_FORMAT_RGBA_INT16,
1062 "MESA_FORMAT_RGBA_INT16",
1063 GL_RGBA,
1064 GL_INT,
1065 16, 16, 16, 16,
1066 0, 0, 0, 0, 0,
1067 1, 1, 8
1068 },
1069 {
1070 MESA_FORMAT_R_INT32,
1071 "MESA_FORMAT_R_INT32",
1072 GL_RED,
1073 GL_INT,
1074 32, 0, 0, 0,
1075 0, 0, 0, 0, 0,
1076 1, 1, 4
1077 },
1078 {
1079 MESA_FORMAT_RG_INT32,
1080 "MESA_FORMAT_RG_INT32",
1081 GL_RG,
1082 GL_INT,
1083 32, 32, 0, 0,
1084 0, 0, 0, 0, 0,
1085 1, 1, 8
1086 },
1087 {
1088 MESA_FORMAT_RGB_INT32,
1089 "MESA_FORMAT_RGB_INT32",
1090 GL_RGB,
1091 GL_INT,
1092 32, 32, 32, 0,
1093 0, 0, 0, 0, 0,
1094 1, 1, 12
1095 },
1096 {
1097 MESA_FORMAT_RGBA_INT32,
1098 "MESA_FORMAT_RGBA_INT32",
1099 GL_RGBA,
1100 GL_INT,
1101 32, 32, 32, 32,
1102 0, 0, 0, 0, 0,
1103 1, 1, 16
1104 },
1105 {
1106 MESA_FORMAT_R_UINT8,
1107 "MESA_FORMAT_R_UINT8",
1108 GL_RED,
1109 GL_UNSIGNED_INT,
1110 8, 0, 0, 0,
1111 0, 0, 0, 0, 0,
1112 1, 1, 1
1113 },
1114 {
1115 MESA_FORMAT_RG_UINT8,
1116 "MESA_FORMAT_RG_UINT8",
1117 GL_RG,
1118 GL_UNSIGNED_INT,
1119 8, 8, 0, 0,
1120 0, 0, 0, 0, 0,
1121 1, 1, 2
1122 },
1123 {
1124 MESA_FORMAT_RGB_UINT8,
1125 "MESA_FORMAT_RGB_UINT8",
1126 GL_RGB,
1127 GL_UNSIGNED_INT,
1128 8, 8, 8, 0,
1129 0, 0, 0, 0, 0,
1130 1, 1, 3
1131 },
1132 {
1133 MESA_FORMAT_RGBA_UINT8,
1134 "MESA_FORMAT_RGBA_UINT8",
1135 GL_RGBA,
1136 GL_UNSIGNED_INT,
1137 8, 8, 8, 8,
1138 0, 0, 0, 0, 0,
1139 1, 1, 4
1140 },
1141 {
1142 MESA_FORMAT_R_UINT16,
1143 "MESA_FORMAT_R_UINT16",
1144 GL_RED,
1145 GL_UNSIGNED_INT,
1146 16, 0, 0, 0,
1147 0, 0, 0, 0, 0,
1148 1, 1, 2
1149 },
1150 {
1151 MESA_FORMAT_RG_UINT16,
1152 "MESA_FORMAT_RG_UINT16",
1153 GL_RG,
1154 GL_UNSIGNED_INT,
1155 16, 16, 0, 0,
1156 0, 0, 0, 0, 0,
1157 1, 1, 4
1158 },
1159 {
1160 MESA_FORMAT_RGB_UINT16,
1161 "MESA_FORMAT_RGB_UINT16",
1162 GL_RGB,
1163 GL_UNSIGNED_INT,
1164 16, 16, 16, 0,
1165 0, 0, 0, 0, 0,
1166 1, 1, 6
1167 },
1168 {
1169 MESA_FORMAT_RGBA_UINT16,
1170 "MESA_FORMAT_RGBA_UINT16",
1171 GL_RGBA,
1172 GL_UNSIGNED_INT,
1173 16, 16, 16, 16,
1174 0, 0, 0, 0, 0,
1175 1, 1, 8
1176 },
1177 {
1178 MESA_FORMAT_R_UINT32,
1179 "MESA_FORMAT_R_UINT32",
1180 GL_RED,
1181 GL_UNSIGNED_INT,
1182 32, 0, 0, 0,
1183 0, 0, 0, 0, 0,
1184 1, 1, 4
1185 },
1186 {
1187 MESA_FORMAT_RG_UINT32,
1188 "MESA_FORMAT_RG_UINT32",
1189 GL_RG,
1190 GL_UNSIGNED_INT,
1191 32, 32, 0, 0,
1192 0, 0, 0, 0, 0,
1193 1, 1, 8
1194 },
1195 {
1196 MESA_FORMAT_RGB_UINT32,
1197 "MESA_FORMAT_RGB_UINT32",
1198 GL_RGB,
1199 GL_UNSIGNED_INT,
1200 32, 32, 32, 0,
1201 0, 0, 0, 0, 0,
1202 1, 1, 12
1203 },
1204 {
1205 MESA_FORMAT_RGBA_UINT32,
1206 "MESA_FORMAT_RGBA_UINT32",
1207 GL_RGBA,
1208 GL_UNSIGNED_INT,
1209 32, 32, 32, 32,
1210 0, 0, 0, 0, 0,
1211 1, 1, 16
1212 },
1213
1214
1215 {
1216 MESA_FORMAT_DUDV8,
1217 "MESA_FORMAT_DUDV8",
1218 GL_DUDV_ATI,
1219 GL_SIGNED_NORMALIZED,
1220 0, 0, 0, 0,
1221 0, 0, 0, 0, 0,
1222 1, 1, 2
1223 },
1224
1225 /* Signed 8 bits / channel */
1226 {
1227 MESA_FORMAT_SIGNED_R8, /* Name */
1228 "MESA_FORMAT_SIGNED_R8", /* StrName */
1229 GL_RED, /* BaseFormat */
1230 GL_SIGNED_NORMALIZED, /* DataType */
1231 8, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1232 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
1233 1, 1, 1 /* BlockWidth/Height,Bytes */
1234 },
1235 {
1236 MESA_FORMAT_SIGNED_RG88_REV,
1237 "MESA_FORMAT_SIGNED_RG88_REV",
1238 GL_RG,
1239 GL_SIGNED_NORMALIZED,
1240 8, 8, 0, 0,
1241 0, 0, 0, 0, 0,
1242 1, 1, 2
1243 },
1244 {
1245 MESA_FORMAT_SIGNED_RGBX8888,
1246 "MESA_FORMAT_SIGNED_RGBX8888",
1247 GL_RGB,
1248 GL_SIGNED_NORMALIZED,
1249 8, 8, 8, 0,
1250 0, 0, 0, 0, 0,
1251 1, 1, 4 /* 4 bpp, but no alpha */
1252 },
1253 {
1254 MESA_FORMAT_SIGNED_RGBA8888,
1255 "MESA_FORMAT_SIGNED_RGBA8888",
1256 GL_RGBA,
1257 GL_SIGNED_NORMALIZED,
1258 8, 8, 8, 8,
1259 0, 0, 0, 0, 0,
1260 1, 1, 4
1261 },
1262 {
1263 MESA_FORMAT_SIGNED_RGBA8888_REV,
1264 "MESA_FORMAT_SIGNED_RGBA8888_REV",
1265 GL_RGBA,
1266 GL_SIGNED_NORMALIZED,
1267 8, 8, 8, 8,
1268 0, 0, 0, 0, 0,
1269 1, 1, 4
1270 },
1271
1272 /* Signed 16 bits / channel */
1273 {
1274 MESA_FORMAT_SIGNED_R16,
1275 "MESA_FORMAT_SIGNED_R16",
1276 GL_RED,
1277 GL_SIGNED_NORMALIZED,
1278 16, 0, 0, 0,
1279 0, 0, 0, 0, 0,
1280 1, 1, 2
1281 },
1282 {
1283 MESA_FORMAT_SIGNED_GR1616,
1284 "MESA_FORMAT_SIGNED_GR1616",
1285 GL_RG,
1286 GL_SIGNED_NORMALIZED,
1287 16, 16, 0, 0,
1288 0, 0, 0, 0, 0,
1289 1, 1, 4
1290 },
1291 {
1292 MESA_FORMAT_SIGNED_RGB_16,
1293 "MESA_FORMAT_SIGNED_RGB_16",
1294 GL_RGB,
1295 GL_SIGNED_NORMALIZED,
1296 16, 16, 16, 0,
1297 0, 0, 0, 0, 0,
1298 1, 1, 6
1299 },
1300 {
1301 MESA_FORMAT_SIGNED_RGBA_16,
1302 "MESA_FORMAT_SIGNED_RGBA_16",
1303 GL_RGBA,
1304 GL_SIGNED_NORMALIZED,
1305 16, 16, 16, 16,
1306 0, 0, 0, 0, 0,
1307 1, 1, 8
1308 },
1309 {
1310 MESA_FORMAT_RGBA_16,
1311 "MESA_FORMAT_RGBA_16",
1312 GL_RGBA,
1313 GL_UNSIGNED_NORMALIZED,
1314 16, 16, 16, 16,
1315 0, 0, 0, 0, 0,
1316 1, 1, 8
1317 },
1318 {
1319 MESA_FORMAT_RED_RGTC1,
1320 "MESA_FORMAT_RED_RGTC1",
1321 GL_RED,
1322 GL_UNSIGNED_NORMALIZED,
1323 8, 0, 0, 0,
1324 0, 0, 0, 0, 0,
1325 4, 4, 8 /* 8 bytes per 4x4 block */
1326 },
1327 {
1328 MESA_FORMAT_SIGNED_RED_RGTC1,
1329 "MESA_FORMAT_SIGNED_RED_RGTC1",
1330 GL_RED,
1331 GL_SIGNED_NORMALIZED,
1332 8, 0, 0, 0,
1333 0, 0, 0, 0, 0,
1334 4, 4, 8 /* 8 bytes per 4x4 block */
1335 },
1336 {
1337 MESA_FORMAT_RG_RGTC2,
1338 "MESA_FORMAT_RG_RGTC2",
1339 GL_RG,
1340 GL_UNSIGNED_NORMALIZED,
1341 8, 8, 0, 0,
1342 0, 0, 0, 0, 0,
1343 4, 4, 16 /* 16 bytes per 4x4 block */
1344 },
1345 {
1346 MESA_FORMAT_SIGNED_RG_RGTC2,
1347 "MESA_FORMAT_SIGNED_RG_RGTC2",
1348 GL_RG,
1349 GL_SIGNED_NORMALIZED,
1350 8, 8, 0, 0,
1351 0, 0, 0, 0, 0,
1352 4, 4, 16 /* 16 bytes per 4x4 block */
1353 },
1354 {
1355 MESA_FORMAT_L_LATC1,
1356 "MESA_FORMAT_L_LATC1",
1357 GL_LUMINANCE,
1358 GL_UNSIGNED_NORMALIZED,
1359 0, 0, 0, 0,
1360 4, 0, 0, 0, 0,
1361 4, 4, 8 /* 8 bytes per 4x4 block */
1362 },
1363 {
1364 MESA_FORMAT_SIGNED_L_LATC1,
1365 "MESA_FORMAT_SIGNED_L_LATC1",
1366 GL_LUMINANCE,
1367 GL_SIGNED_NORMALIZED,
1368 0, 0, 0, 0,
1369 4, 0, 0, 0, 0,
1370 4, 4, 8 /* 8 bytes per 4x4 block */
1371 },
1372 {
1373 MESA_FORMAT_LA_LATC2,
1374 "MESA_FORMAT_LA_LATC2",
1375 GL_LUMINANCE_ALPHA,
1376 GL_UNSIGNED_NORMALIZED,
1377 0, 0, 0, 4,
1378 4, 0, 0, 0, 0,
1379 4, 4, 16 /* 16 bytes per 4x4 block */
1380 },
1381 {
1382 MESA_FORMAT_SIGNED_LA_LATC2,
1383 "MESA_FORMAT_SIGNED_LA_LATC2",
1384 GL_LUMINANCE_ALPHA,
1385 GL_SIGNED_NORMALIZED,
1386 0, 0, 0, 4,
1387 4, 0, 0, 0, 0,
1388 4, 4, 16 /* 16 bytes per 4x4 block */
1389 },
1390
1391 {
1392 MESA_FORMAT_ETC1_RGB8,
1393 "MESA_FORMAT_ETC1_RGB8",
1394 GL_RGB,
1395 GL_UNSIGNED_NORMALIZED,
1396 8, 8, 8, 0,
1397 0, 0, 0, 0, 0,
1398 4, 4, 8 /* 8 bytes per 4x4 block */
1399 },
1400
1401 /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
1402 {
1403 MESA_FORMAT_SIGNED_A8,
1404 "MESA_FORMAT_SIGNED_A8",
1405 GL_ALPHA,
1406 GL_SIGNED_NORMALIZED,
1407 0, 0, 0, 8,
1408 0, 0, 0, 0, 0,
1409 1, 1, 1
1410 },
1411 {
1412 MESA_FORMAT_SIGNED_L8,
1413 "MESA_FORMAT_SIGNED_L8",
1414 GL_LUMINANCE,
1415 GL_SIGNED_NORMALIZED,
1416 0, 0, 0, 0,
1417 8, 0, 0, 0, 0,
1418 1, 1, 1
1419 },
1420 {
1421 MESA_FORMAT_SIGNED_AL88,
1422 "MESA_FORMAT_SIGNED_AL88",
1423 GL_LUMINANCE_ALPHA,
1424 GL_SIGNED_NORMALIZED,
1425 0, 0, 0, 8,
1426 8, 0, 0, 0, 0,
1427 1, 1, 2
1428 },
1429 {
1430 MESA_FORMAT_SIGNED_I8,
1431 "MESA_FORMAT_SIGNED_I8",
1432 GL_INTENSITY,
1433 GL_SIGNED_NORMALIZED,
1434 0, 0, 0, 0,
1435 0, 8, 0, 0, 0,
1436 1, 1, 1
1437 },
1438 {
1439 MESA_FORMAT_SIGNED_A16,
1440 "MESA_FORMAT_SIGNED_A16",
1441 GL_ALPHA,
1442 GL_SIGNED_NORMALIZED,
1443 0, 0, 0, 16,
1444 0, 0, 0, 0, 0,
1445 1, 1, 2
1446 },
1447 {
1448 MESA_FORMAT_SIGNED_L16,
1449 "MESA_FORMAT_SIGNED_L16",
1450 GL_LUMINANCE,
1451 GL_SIGNED_NORMALIZED,
1452 0, 0, 0, 0,
1453 16, 0, 0, 0, 0,
1454 1, 1, 2
1455 },
1456 {
1457 MESA_FORMAT_SIGNED_AL1616,
1458 "MESA_FORMAT_SIGNED_AL1616",
1459 GL_LUMINANCE_ALPHA,
1460 GL_SIGNED_NORMALIZED,
1461 0, 0, 0, 16,
1462 16, 0, 0, 0, 0,
1463 1, 1, 4
1464 },
1465 {
1466 MESA_FORMAT_SIGNED_I16,
1467 "MESA_FORMAT_SIGNED_I16",
1468 GL_INTENSITY,
1469 GL_SIGNED_NORMALIZED,
1470 0, 0, 0, 0,
1471 0, 16, 0, 0, 0,
1472 1, 1, 2
1473 },
1474 {
1475 MESA_FORMAT_RGB9_E5_FLOAT,
1476 "MESA_FORMAT_RGB9_E5",
1477 GL_RGB,
1478 GL_FLOAT,
1479 9, 9, 9, 0,
1480 0, 0, 0, 0, 0,
1481 1, 1, 4
1482 },
1483 {
1484 MESA_FORMAT_R11_G11_B10_FLOAT,
1485 "MESA_FORMAT_R11_G11_B10_FLOAT",
1486 GL_RGB,
1487 GL_FLOAT,
1488 11, 11, 10, 0,
1489 0, 0, 0, 0, 0,
1490 1, 1, 4
1491 },
1492 /* ARB_depth_buffer_float */
1493 {
1494 MESA_FORMAT_Z32_FLOAT, /* Name */
1495 "MESA_FORMAT_Z32_FLOAT", /* StrName */
1496 GL_DEPTH_COMPONENT, /* BaseFormat */
1497 GL_FLOAT, /* DataType */
1498 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1499 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
1500 1, 1, 4 /* BlockWidth/Height,Bytes */
1501 },
1502 {
1503 MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
1504 "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
1505 GL_DEPTH_STENCIL, /* BaseFormat */
1506 /* DataType here is used to answer GL_TEXTURE_DEPTH_TYPE queries, and is
1507 * never used for stencil because stencil is always GL_UNSIGNED_INT.
1508 */
1509 GL_FLOAT, /* DataType */
1510 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1511 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
1512 1, 1, 8 /* BlockWidth/Height,Bytes */
1513 },
1514 {
1515 MESA_FORMAT_ARGB2101010_UINT,
1516 "MESA_FORMAT_ARGB2101010_UINT",
1517 GL_RGBA,
1518 GL_UNSIGNED_INT,
1519 10, 10, 10, 2,
1520 0, 0, 0, 0, 0,
1521 1, 1, 4
1522 },
1523 };
1524
1525
1526
1527 static const struct gl_format_info *
1528 _mesa_get_format_info(gl_format format)
1529 {
1530 const struct gl_format_info *info = &format_info[format];
1531 assert(info->Name == format);
1532 return info;
1533 }
1534
1535
1536 /** Return string name of format (for debugging) */
1537 const char *
1538 _mesa_get_format_name(gl_format format)
1539 {
1540 const struct gl_format_info *info = _mesa_get_format_info(format);
1541 return info->StrName;
1542 }
1543
1544
1545
1546 /**
1547 * Return bytes needed to store a block of pixels in the given format.
1548 * Normally, a block is 1x1 (a single pixel). But for compressed formats
1549 * a block may be 4x4 or 8x4, etc.
1550 *
1551 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
1552 */
1553 GLint
1554 _mesa_get_format_bytes(gl_format format)
1555 {
1556 const struct gl_format_info *info = _mesa_get_format_info(format);
1557 ASSERT(info->BytesPerBlock);
1558 ASSERT(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
1559 _mesa_is_format_compressed(format));
1560 return info->BytesPerBlock;
1561 }
1562
1563
1564 /**
1565 * Return bits per component for the given format.
1566 * \param format one of MESA_FORMAT_x
1567 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
1568 */
1569 GLint
1570 _mesa_get_format_bits(gl_format format, GLenum pname)
1571 {
1572 const struct gl_format_info *info = _mesa_get_format_info(format);
1573
1574 switch (pname) {
1575 case GL_RED_BITS:
1576 case GL_TEXTURE_RED_SIZE:
1577 case GL_RENDERBUFFER_RED_SIZE_EXT:
1578 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1579 return info->RedBits;
1580 case GL_GREEN_BITS:
1581 case GL_TEXTURE_GREEN_SIZE:
1582 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1583 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1584 return info->GreenBits;
1585 case GL_BLUE_BITS:
1586 case GL_TEXTURE_BLUE_SIZE:
1587 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1588 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1589 return info->BlueBits;
1590 case GL_ALPHA_BITS:
1591 case GL_TEXTURE_ALPHA_SIZE:
1592 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1593 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1594 return info->AlphaBits;
1595 case GL_TEXTURE_INTENSITY_SIZE:
1596 return info->IntensityBits;
1597 case GL_TEXTURE_LUMINANCE_SIZE:
1598 return info->LuminanceBits;
1599 case GL_INDEX_BITS:
1600 return info->IndexBits;
1601 case GL_DEPTH_BITS:
1602 case GL_TEXTURE_DEPTH_SIZE_ARB:
1603 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1604 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1605 return info->DepthBits;
1606 case GL_STENCIL_BITS:
1607 case GL_TEXTURE_STENCIL_SIZE_EXT:
1608 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1609 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1610 return info->StencilBits;
1611 default:
1612 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
1613 return 0;
1614 }
1615 }
1616
1617
1618 GLuint
1619 _mesa_get_format_max_bits(gl_format format)
1620 {
1621 const struct gl_format_info *info = _mesa_get_format_info(format);
1622 GLuint max = MAX2(info->RedBits, info->GreenBits);
1623 max = MAX2(max, info->BlueBits);
1624 max = MAX2(max, info->AlphaBits);
1625 max = MAX2(max, info->LuminanceBits);
1626 max = MAX2(max, info->IntensityBits);
1627 max = MAX2(max, info->DepthBits);
1628 max = MAX2(max, info->StencilBits);
1629 return max;
1630 }
1631
1632
1633 /**
1634 * Return the data type (or more specifically, the data representation)
1635 * for the given format.
1636 * The return value will be one of:
1637 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
1638 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
1639 * GL_UNSIGNED_INT = an ordinary unsigned integer
1640 * GL_INT = an ordinary signed integer
1641 * GL_FLOAT = an ordinary float
1642 */
1643 GLenum
1644 _mesa_get_format_datatype(gl_format format)
1645 {
1646 const struct gl_format_info *info = _mesa_get_format_info(format);
1647 return info->DataType;
1648 }
1649
1650
1651 /**
1652 * Return the basic format for the given type. The result will be one of
1653 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
1654 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
1655 */
1656 GLenum
1657 _mesa_get_format_base_format(gl_format format)
1658 {
1659 const struct gl_format_info *info = _mesa_get_format_info(format);
1660 return info->BaseFormat;
1661 }
1662
1663
1664 /**
1665 * Return the block size (in pixels) for the given format. Normally
1666 * the block size is 1x1. But compressed formats will have block sizes
1667 * of 4x4 or 8x4 pixels, etc.
1668 * \param bw returns block width in pixels
1669 * \param bh returns block height in pixels
1670 */
1671 void
1672 _mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
1673 {
1674 const struct gl_format_info *info = _mesa_get_format_info(format);
1675 *bw = info->BlockWidth;
1676 *bh = info->BlockHeight;
1677 }
1678
1679
1680 /** Is the given format a compressed format? */
1681 GLboolean
1682 _mesa_is_format_compressed(gl_format format)
1683 {
1684 const struct gl_format_info *info = _mesa_get_format_info(format);
1685 return info->BlockWidth > 1 || info->BlockHeight > 1;
1686 }
1687
1688
1689 /**
1690 * Determine if the given format represents a packed depth/stencil buffer.
1691 */
1692 GLboolean
1693 _mesa_is_format_packed_depth_stencil(gl_format format)
1694 {
1695 const struct gl_format_info *info = _mesa_get_format_info(format);
1696
1697 return info->BaseFormat == GL_DEPTH_STENCIL;
1698 }
1699
1700
1701 /**
1702 * Is the given format a signed/unsigned integer color format?
1703 */
1704 GLboolean
1705 _mesa_is_format_integer_color(gl_format format)
1706 {
1707 const struct gl_format_info *info = _mesa_get_format_info(format);
1708 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
1709 info->BaseFormat != GL_DEPTH_COMPONENT &&
1710 info->BaseFormat != GL_DEPTH_STENCIL &&
1711 info->BaseFormat != GL_STENCIL_INDEX;
1712 }
1713
1714
1715 /**
1716 * Is the given format an unsigned integer format?
1717 */
1718 GLboolean
1719 _mesa_is_format_unsigned(gl_format format)
1720 {
1721 const struct gl_format_info *info = _mesa_get_format_info(format);
1722 return _mesa_is_type_unsigned(info->DataType);
1723 }
1724
1725
1726 /**
1727 * Return color encoding for given format.
1728 * \return GL_LINEAR or GL_SRGB
1729 */
1730 GLenum
1731 _mesa_get_format_color_encoding(gl_format format)
1732 {
1733 /* XXX this info should be encoded in gl_format_info */
1734 switch (format) {
1735 case MESA_FORMAT_SRGB8:
1736 case MESA_FORMAT_SRGBA8:
1737 case MESA_FORMAT_SARGB8:
1738 case MESA_FORMAT_SL8:
1739 case MESA_FORMAT_SLA8:
1740 case MESA_FORMAT_SRGB_DXT1:
1741 case MESA_FORMAT_SRGBA_DXT1:
1742 case MESA_FORMAT_SRGBA_DXT3:
1743 case MESA_FORMAT_SRGBA_DXT5:
1744 return GL_SRGB;
1745 default:
1746 return GL_LINEAR;
1747 }
1748 }
1749
1750
1751 /**
1752 * For an sRGB format, return the corresponding linear color space format.
1753 * For non-sRGB formats, return the format as-is.
1754 */
1755 gl_format
1756 _mesa_get_srgb_format_linear(gl_format format)
1757 {
1758 switch (format) {
1759 case MESA_FORMAT_SRGB8:
1760 format = MESA_FORMAT_RGB888;
1761 break;
1762 case MESA_FORMAT_SRGBA8:
1763 format = MESA_FORMAT_RGBA8888;
1764 break;
1765 case MESA_FORMAT_SARGB8:
1766 format = MESA_FORMAT_ARGB8888;
1767 break;
1768 case MESA_FORMAT_SL8:
1769 format = MESA_FORMAT_L8;
1770 break;
1771 case MESA_FORMAT_SLA8:
1772 format = MESA_FORMAT_AL88;
1773 break;
1774 case MESA_FORMAT_SRGB_DXT1:
1775 format = MESA_FORMAT_RGB_DXT1;
1776 break;
1777 case MESA_FORMAT_SRGBA_DXT1:
1778 format = MESA_FORMAT_RGBA_DXT1;
1779 break;
1780 case MESA_FORMAT_SRGBA_DXT3:
1781 format = MESA_FORMAT_RGBA_DXT3;
1782 break;
1783 case MESA_FORMAT_SRGBA_DXT5:
1784 format = MESA_FORMAT_RGBA_DXT5;
1785 break;
1786 default:
1787 break;
1788 }
1789 return format;
1790 }
1791
1792
1793 /**
1794 * If the given format is a compressed format, return a corresponding
1795 * uncompressed format.
1796 */
1797 gl_format
1798 _mesa_get_uncompressed_format(gl_format format)
1799 {
1800 switch (format) {
1801 case MESA_FORMAT_RGB_FXT1:
1802 return MESA_FORMAT_RGB888;
1803 case MESA_FORMAT_RGBA_FXT1:
1804 return MESA_FORMAT_RGBA8888;
1805 case MESA_FORMAT_RGB_DXT1:
1806 case MESA_FORMAT_SRGB_DXT1:
1807 return MESA_FORMAT_RGB888;
1808 case MESA_FORMAT_RGBA_DXT1:
1809 case MESA_FORMAT_SRGBA_DXT1:
1810 return MESA_FORMAT_RGBA8888;
1811 case MESA_FORMAT_RGBA_DXT3:
1812 case MESA_FORMAT_SRGBA_DXT3:
1813 return MESA_FORMAT_RGBA8888;
1814 case MESA_FORMAT_RGBA_DXT5:
1815 case MESA_FORMAT_SRGBA_DXT5:
1816 return MESA_FORMAT_RGBA8888;
1817 case MESA_FORMAT_RED_RGTC1:
1818 return MESA_FORMAT_R8;
1819 case MESA_FORMAT_SIGNED_RED_RGTC1:
1820 return MESA_FORMAT_SIGNED_R8;
1821 case MESA_FORMAT_RG_RGTC2:
1822 return MESA_FORMAT_GR88;
1823 case MESA_FORMAT_SIGNED_RG_RGTC2:
1824 return MESA_FORMAT_SIGNED_RG88_REV;
1825 case MESA_FORMAT_L_LATC1:
1826 return MESA_FORMAT_L8;
1827 case MESA_FORMAT_SIGNED_L_LATC1:
1828 return MESA_FORMAT_SIGNED_L8;
1829 case MESA_FORMAT_LA_LATC2:
1830 return MESA_FORMAT_AL88;
1831 case MESA_FORMAT_SIGNED_LA_LATC2:
1832 return MESA_FORMAT_SIGNED_AL88;
1833 case MESA_FORMAT_ETC1_RGB8:
1834 return MESA_FORMAT_RGB888;
1835 default:
1836 #ifdef DEBUG
1837 assert(!_mesa_is_format_compressed(format));
1838 #endif
1839 return format;
1840 }
1841 }
1842
1843
1844 GLuint
1845 _mesa_format_num_components(gl_format format)
1846 {
1847 const struct gl_format_info *info = _mesa_get_format_info(format);
1848 return ((info->RedBits > 0) +
1849 (info->GreenBits > 0) +
1850 (info->BlueBits > 0) +
1851 (info->AlphaBits > 0) +
1852 (info->LuminanceBits > 0) +
1853 (info->IntensityBits > 0) +
1854 (info->DepthBits > 0) +
1855 (info->StencilBits > 0));
1856 }
1857
1858
1859 /**
1860 * Return number of bytes needed to store an image of the given size
1861 * in the given format.
1862 */
1863 GLuint
1864 _mesa_format_image_size(gl_format format, GLsizei width,
1865 GLsizei height, GLsizei depth)
1866 {
1867 const struct gl_format_info *info = _mesa_get_format_info(format);
1868 /* Strictly speaking, a conditional isn't needed here */
1869 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1870 /* compressed format (2D only for now) */
1871 const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
1872 const GLuint wblocks = (width + bw - 1) / bw;
1873 const GLuint hblocks = (height + bh - 1) / bh;
1874 const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
1875 return sz * depth;
1876 }
1877 else {
1878 /* non-compressed */
1879 const GLuint sz = width * height * depth * info->BytesPerBlock;
1880 return sz;
1881 }
1882 }
1883
1884
1885 /**
1886 * Same as _mesa_format_image_size() but returns a 64-bit value to
1887 * accomodate very large textures.
1888 */
1889 uint64_t
1890 _mesa_format_image_size64(gl_format format, GLsizei width,
1891 GLsizei height, GLsizei depth)
1892 {
1893 const struct gl_format_info *info = _mesa_get_format_info(format);
1894 /* Strictly speaking, a conditional isn't needed here */
1895 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1896 /* compressed format (2D only for now) */
1897 const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
1898 const uint64_t wblocks = (width + bw - 1) / bw;
1899 const uint64_t hblocks = (height + bh - 1) / bh;
1900 const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
1901 return sz * depth;
1902 }
1903 else {
1904 /* non-compressed */
1905 const uint64_t sz = ((uint64_t) width *
1906 (uint64_t) height *
1907 (uint64_t) depth *
1908 info->BytesPerBlock);
1909 return sz;
1910 }
1911 }
1912
1913
1914
1915 GLint
1916 _mesa_format_row_stride(gl_format format, GLsizei width)
1917 {
1918 const struct gl_format_info *info = _mesa_get_format_info(format);
1919 /* Strictly speaking, a conditional isn't needed here */
1920 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1921 /* compressed format */
1922 const GLuint bw = info->BlockWidth;
1923 const GLuint wblocks = (width + bw - 1) / bw;
1924 const GLint stride = wblocks * info->BytesPerBlock;
1925 return stride;
1926 }
1927 else {
1928 const GLint stride = width * info->BytesPerBlock;
1929 return stride;
1930 }
1931 }
1932
1933
1934 /**
1935 * Debug/test: check that all formats are handled in the
1936 * _mesa_format_to_type_and_comps() function. When new pixel formats
1937 * are added to Mesa, that function needs to be updated.
1938 * This is a no-op after the first call.
1939 */
1940 static void
1941 check_format_to_type_and_comps(void)
1942 {
1943 gl_format f;
1944
1945 for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
1946 GLenum datatype = 0;
1947 GLuint comps = 0;
1948 /* This function will emit a problem/warning if the format is
1949 * not handled.
1950 */
1951 _mesa_format_to_type_and_comps(f, &datatype, &comps);
1952 }
1953 }
1954
1955
1956 /**
1957 * Do sanity checking of the format info table.
1958 */
1959 void
1960 _mesa_test_formats(void)
1961 {
1962 GLuint i;
1963
1964 STATIC_ASSERT(Elements(format_info) == MESA_FORMAT_COUNT);
1965
1966 for (i = 0; i < MESA_FORMAT_COUNT; i++) {
1967 const struct gl_format_info *info = _mesa_get_format_info(i);
1968 assert(info);
1969
1970 assert(info->Name == i);
1971
1972 if (info->Name == MESA_FORMAT_NONE)
1973 continue;
1974
1975 if (info->BlockWidth == 1 && info->BlockHeight == 1) {
1976 if (info->RedBits > 0) {
1977 GLuint t = info->RedBits + info->GreenBits
1978 + info->BlueBits + info->AlphaBits;
1979 assert(t / 8 <= info->BytesPerBlock);
1980 (void) t;
1981 }
1982 }
1983
1984 assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
1985 info->DataType == GL_SIGNED_NORMALIZED ||
1986 info->DataType == GL_UNSIGNED_INT ||
1987 info->DataType == GL_INT ||
1988 info->DataType == GL_FLOAT ||
1989 /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
1990 info->DataType == GL_NONE);
1991
1992 if (info->BaseFormat == GL_RGB) {
1993 assert(info->RedBits > 0);
1994 assert(info->GreenBits > 0);
1995 assert(info->BlueBits > 0);
1996 assert(info->AlphaBits == 0);
1997 assert(info->LuminanceBits == 0);
1998 assert(info->IntensityBits == 0);
1999 }
2000 else if (info->BaseFormat == GL_RGBA) {
2001 assert(info->RedBits > 0);
2002 assert(info->GreenBits > 0);
2003 assert(info->BlueBits > 0);
2004 assert(info->AlphaBits > 0);
2005 assert(info->LuminanceBits == 0);
2006 assert(info->IntensityBits == 0);
2007 }
2008 else if (info->BaseFormat == GL_RG) {
2009 assert(info->RedBits > 0);
2010 assert(info->GreenBits > 0);
2011 assert(info->BlueBits == 0);
2012 assert(info->AlphaBits == 0);
2013 assert(info->LuminanceBits == 0);
2014 assert(info->IntensityBits == 0);
2015 }
2016 else if (info->BaseFormat == GL_RED) {
2017 assert(info->RedBits > 0);
2018 assert(info->GreenBits == 0);
2019 assert(info->BlueBits == 0);
2020 assert(info->AlphaBits == 0);
2021 assert(info->LuminanceBits == 0);
2022 assert(info->IntensityBits == 0);
2023 }
2024 else if (info->BaseFormat == GL_LUMINANCE) {
2025 assert(info->RedBits == 0);
2026 assert(info->GreenBits == 0);
2027 assert(info->BlueBits == 0);
2028 assert(info->AlphaBits == 0);
2029 assert(info->LuminanceBits > 0);
2030 assert(info->IntensityBits == 0);
2031 }
2032 else if (info->BaseFormat == GL_INTENSITY) {
2033 assert(info->RedBits == 0);
2034 assert(info->GreenBits == 0);
2035 assert(info->BlueBits == 0);
2036 assert(info->AlphaBits == 0);
2037 assert(info->LuminanceBits == 0);
2038 assert(info->IntensityBits > 0);
2039 }
2040 }
2041
2042 check_format_to_type_and_comps();
2043 }
2044
2045
2046
2047 /**
2048 * Return datatype and number of components per texel for the given gl_format.
2049 * Only used for mipmap generation code.
2050 */
2051 void
2052 _mesa_format_to_type_and_comps(gl_format format,
2053 GLenum *datatype, GLuint *comps)
2054 {
2055 switch (format) {
2056 case MESA_FORMAT_RGBA8888:
2057 case MESA_FORMAT_RGBA8888_REV:
2058 case MESA_FORMAT_ARGB8888:
2059 case MESA_FORMAT_ARGB8888_REV:
2060 case MESA_FORMAT_RGBX8888:
2061 case MESA_FORMAT_RGBX8888_REV:
2062 case MESA_FORMAT_XRGB8888:
2063 case MESA_FORMAT_XRGB8888_REV:
2064 *datatype = GL_UNSIGNED_BYTE;
2065 *comps = 4;
2066 return;
2067 case MESA_FORMAT_RGB888:
2068 case MESA_FORMAT_BGR888:
2069 *datatype = GL_UNSIGNED_BYTE;
2070 *comps = 3;
2071 return;
2072 case MESA_FORMAT_RGB565:
2073 case MESA_FORMAT_RGB565_REV:
2074 *datatype = GL_UNSIGNED_SHORT_5_6_5;
2075 *comps = 3;
2076 return;
2077
2078 case MESA_FORMAT_ARGB4444:
2079 case MESA_FORMAT_ARGB4444_REV:
2080 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
2081 *comps = 4;
2082 return;
2083
2084 case MESA_FORMAT_ARGB1555:
2085 case MESA_FORMAT_ARGB1555_REV:
2086 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
2087 *comps = 4;
2088 return;
2089
2090 case MESA_FORMAT_ARGB2101010:
2091 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2092 *comps = 4;
2093 return;
2094
2095 case MESA_FORMAT_RGBA5551:
2096 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
2097 *comps = 4;
2098 return;
2099
2100 case MESA_FORMAT_AL44:
2101 *datatype = MESA_UNSIGNED_BYTE_4_4;
2102 *comps = 2;
2103 return;
2104
2105 case MESA_FORMAT_AL88:
2106 case MESA_FORMAT_AL88_REV:
2107 case MESA_FORMAT_GR88:
2108 case MESA_FORMAT_RG88:
2109 *datatype = GL_UNSIGNED_BYTE;
2110 *comps = 2;
2111 return;
2112
2113 case MESA_FORMAT_AL1616:
2114 case MESA_FORMAT_AL1616_REV:
2115 case MESA_FORMAT_RG1616:
2116 case MESA_FORMAT_RG1616_REV:
2117 *datatype = GL_UNSIGNED_SHORT;
2118 *comps = 2;
2119 return;
2120
2121 case MESA_FORMAT_R16:
2122 case MESA_FORMAT_A16:
2123 case MESA_FORMAT_L16:
2124 case MESA_FORMAT_I16:
2125 *datatype = GL_UNSIGNED_SHORT;
2126 *comps = 1;
2127 return;
2128
2129 case MESA_FORMAT_RGB332:
2130 *datatype = GL_UNSIGNED_BYTE_3_3_2;
2131 *comps = 3;
2132 return;
2133
2134 case MESA_FORMAT_A8:
2135 case MESA_FORMAT_L8:
2136 case MESA_FORMAT_I8:
2137 case MESA_FORMAT_R8:
2138 case MESA_FORMAT_S8:
2139 *datatype = GL_UNSIGNED_BYTE;
2140 *comps = 1;
2141 return;
2142
2143 case MESA_FORMAT_YCBCR:
2144 case MESA_FORMAT_YCBCR_REV:
2145 *datatype = GL_UNSIGNED_SHORT;
2146 *comps = 2;
2147 return;
2148
2149 case MESA_FORMAT_Z24_S8:
2150 *datatype = GL_UNSIGNED_INT_24_8_MESA;
2151 *comps = 2;
2152 return;
2153
2154 case MESA_FORMAT_S8_Z24:
2155 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
2156 *comps = 2;
2157 return;
2158
2159 case MESA_FORMAT_Z16:
2160 *datatype = GL_UNSIGNED_SHORT;
2161 *comps = 1;
2162 return;
2163
2164 case MESA_FORMAT_X8_Z24:
2165 *datatype = GL_UNSIGNED_INT;
2166 *comps = 1;
2167 return;
2168
2169 case MESA_FORMAT_Z24_X8:
2170 *datatype = GL_UNSIGNED_INT;
2171 *comps = 1;
2172 return;
2173
2174 case MESA_FORMAT_Z32:
2175 *datatype = GL_UNSIGNED_INT;
2176 *comps = 1;
2177 return;
2178
2179 case MESA_FORMAT_Z32_FLOAT:
2180 *datatype = GL_FLOAT;
2181 *comps = 1;
2182 return;
2183
2184 case MESA_FORMAT_Z32_FLOAT_X24S8:
2185 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
2186 *comps = 1;
2187 return;
2188
2189 case MESA_FORMAT_DUDV8:
2190 *datatype = GL_BYTE;
2191 *comps = 2;
2192 return;
2193
2194 case MESA_FORMAT_SIGNED_R8:
2195 case MESA_FORMAT_SIGNED_A8:
2196 case MESA_FORMAT_SIGNED_L8:
2197 case MESA_FORMAT_SIGNED_I8:
2198 *datatype = GL_BYTE;
2199 *comps = 1;
2200 return;
2201 case MESA_FORMAT_SIGNED_RG88_REV:
2202 case MESA_FORMAT_SIGNED_AL88:
2203 *datatype = GL_BYTE;
2204 *comps = 2;
2205 return;
2206 case MESA_FORMAT_SIGNED_RGBA8888:
2207 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2208 case MESA_FORMAT_SIGNED_RGBX8888:
2209 *datatype = GL_BYTE;
2210 *comps = 4;
2211 return;
2212
2213 case MESA_FORMAT_RGBA_16:
2214 *datatype = GL_UNSIGNED_SHORT;
2215 *comps = 4;
2216 return;
2217
2218 case MESA_FORMAT_SIGNED_R16:
2219 case MESA_FORMAT_SIGNED_A16:
2220 case MESA_FORMAT_SIGNED_L16:
2221 case MESA_FORMAT_SIGNED_I16:
2222 *datatype = GL_SHORT;
2223 *comps = 1;
2224 return;
2225 case MESA_FORMAT_SIGNED_GR1616:
2226 case MESA_FORMAT_SIGNED_AL1616:
2227 *datatype = GL_SHORT;
2228 *comps = 2;
2229 return;
2230 case MESA_FORMAT_SIGNED_RGB_16:
2231 *datatype = GL_SHORT;
2232 *comps = 3;
2233 return;
2234 case MESA_FORMAT_SIGNED_RGBA_16:
2235 *datatype = GL_SHORT;
2236 *comps = 4;
2237 return;
2238
2239 #if FEATURE_EXT_texture_sRGB
2240 case MESA_FORMAT_SRGB8:
2241 *datatype = GL_UNSIGNED_BYTE;
2242 *comps = 3;
2243 return;
2244 case MESA_FORMAT_SRGBA8:
2245 case MESA_FORMAT_SARGB8:
2246 *datatype = GL_UNSIGNED_BYTE;
2247 *comps = 4;
2248 return;
2249 case MESA_FORMAT_SL8:
2250 *datatype = GL_UNSIGNED_BYTE;
2251 *comps = 1;
2252 return;
2253 case MESA_FORMAT_SLA8:
2254 *datatype = GL_UNSIGNED_BYTE;
2255 *comps = 2;
2256 return;
2257 #endif
2258
2259 #if FEATURE_texture_fxt1
2260 case MESA_FORMAT_RGB_FXT1:
2261 case MESA_FORMAT_RGBA_FXT1:
2262 #endif
2263 #if FEATURE_texture_s3tc
2264 case MESA_FORMAT_RGB_DXT1:
2265 case MESA_FORMAT_RGBA_DXT1:
2266 case MESA_FORMAT_RGBA_DXT3:
2267 case MESA_FORMAT_RGBA_DXT5:
2268 #if FEATURE_EXT_texture_sRGB
2269 case MESA_FORMAT_SRGB_DXT1:
2270 case MESA_FORMAT_SRGBA_DXT1:
2271 case MESA_FORMAT_SRGBA_DXT3:
2272 case MESA_FORMAT_SRGBA_DXT5:
2273 #endif
2274 #endif
2275 case MESA_FORMAT_RED_RGTC1:
2276 case MESA_FORMAT_SIGNED_RED_RGTC1:
2277 case MESA_FORMAT_RG_RGTC2:
2278 case MESA_FORMAT_SIGNED_RG_RGTC2:
2279 case MESA_FORMAT_L_LATC1:
2280 case MESA_FORMAT_SIGNED_L_LATC1:
2281 case MESA_FORMAT_LA_LATC2:
2282 case MESA_FORMAT_SIGNED_LA_LATC2:
2283 case MESA_FORMAT_ETC1_RGB8:
2284 /* XXX generate error instead? */
2285 *datatype = GL_UNSIGNED_BYTE;
2286 *comps = 0;
2287 return;
2288
2289 case MESA_FORMAT_RGBA_FLOAT32:
2290 *datatype = GL_FLOAT;
2291 *comps = 4;
2292 return;
2293 case MESA_FORMAT_RGBA_FLOAT16:
2294 *datatype = GL_HALF_FLOAT_ARB;
2295 *comps = 4;
2296 return;
2297 case MESA_FORMAT_RGB_FLOAT32:
2298 *datatype = GL_FLOAT;
2299 *comps = 3;
2300 return;
2301 case MESA_FORMAT_RGB_FLOAT16:
2302 *datatype = GL_HALF_FLOAT_ARB;
2303 *comps = 3;
2304 return;
2305 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2306 case MESA_FORMAT_RG_FLOAT32:
2307 *datatype = GL_FLOAT;
2308 *comps = 2;
2309 return;
2310 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2311 case MESA_FORMAT_RG_FLOAT16:
2312 *datatype = GL_HALF_FLOAT_ARB;
2313 *comps = 2;
2314 return;
2315 case MESA_FORMAT_ALPHA_FLOAT32:
2316 case MESA_FORMAT_LUMINANCE_FLOAT32:
2317 case MESA_FORMAT_INTENSITY_FLOAT32:
2318 case MESA_FORMAT_R_FLOAT32:
2319 *datatype = GL_FLOAT;
2320 *comps = 1;
2321 return;
2322 case MESA_FORMAT_ALPHA_FLOAT16:
2323 case MESA_FORMAT_LUMINANCE_FLOAT16:
2324 case MESA_FORMAT_INTENSITY_FLOAT16:
2325 case MESA_FORMAT_R_FLOAT16:
2326 *datatype = GL_HALF_FLOAT_ARB;
2327 *comps = 1;
2328 return;
2329
2330 case MESA_FORMAT_ALPHA_UINT8:
2331 case MESA_FORMAT_LUMINANCE_UINT8:
2332 case MESA_FORMAT_INTENSITY_UINT8:
2333 *datatype = GL_UNSIGNED_BYTE;
2334 *comps = 1;
2335 return;
2336 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2337 *datatype = GL_UNSIGNED_BYTE;
2338 *comps = 2;
2339 return;
2340
2341 case MESA_FORMAT_ALPHA_UINT16:
2342 case MESA_FORMAT_LUMINANCE_UINT16:
2343 case MESA_FORMAT_INTENSITY_UINT16:
2344 *datatype = GL_UNSIGNED_SHORT;
2345 *comps = 1;
2346 return;
2347 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2348 *datatype = GL_UNSIGNED_SHORT;
2349 *comps = 2;
2350 return;
2351 case MESA_FORMAT_ALPHA_UINT32:
2352 case MESA_FORMAT_LUMINANCE_UINT32:
2353 case MESA_FORMAT_INTENSITY_UINT32:
2354 *datatype = GL_UNSIGNED_INT;
2355 *comps = 1;
2356 return;
2357 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2358 *datatype = GL_UNSIGNED_INT;
2359 *comps = 2;
2360 return;
2361 case MESA_FORMAT_ALPHA_INT8:
2362 case MESA_FORMAT_LUMINANCE_INT8:
2363 case MESA_FORMAT_INTENSITY_INT8:
2364 *datatype = GL_BYTE;
2365 *comps = 1;
2366 return;
2367 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2368 *datatype = GL_BYTE;
2369 *comps = 2;
2370 return;
2371
2372 case MESA_FORMAT_ALPHA_INT16:
2373 case MESA_FORMAT_LUMINANCE_INT16:
2374 case MESA_FORMAT_INTENSITY_INT16:
2375 *datatype = GL_SHORT;
2376 *comps = 1;
2377 return;
2378 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2379 *datatype = GL_SHORT;
2380 *comps = 2;
2381 return;
2382
2383 case MESA_FORMAT_ALPHA_INT32:
2384 case MESA_FORMAT_LUMINANCE_INT32:
2385 case MESA_FORMAT_INTENSITY_INT32:
2386 *datatype = GL_INT;
2387 *comps = 1;
2388 return;
2389 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2390 *datatype = GL_INT;
2391 *comps = 2;
2392 return;
2393
2394 case MESA_FORMAT_R_INT8:
2395 *datatype = GL_BYTE;
2396 *comps = 1;
2397 return;
2398 case MESA_FORMAT_RG_INT8:
2399 *datatype = GL_BYTE;
2400 *comps = 2;
2401 return;
2402 case MESA_FORMAT_RGB_INT8:
2403 *datatype = GL_BYTE;
2404 *comps = 3;
2405 return;
2406 case MESA_FORMAT_RGBA_INT8:
2407 *datatype = GL_BYTE;
2408 *comps = 4;
2409 return;
2410 case MESA_FORMAT_R_INT16:
2411 *datatype = GL_SHORT;
2412 *comps = 1;
2413 return;
2414 case MESA_FORMAT_RG_INT16:
2415 *datatype = GL_SHORT;
2416 *comps = 2;
2417 return;
2418 case MESA_FORMAT_RGB_INT16:
2419 *datatype = GL_SHORT;
2420 *comps = 3;
2421 return;
2422 case MESA_FORMAT_RGBA_INT16:
2423 *datatype = GL_SHORT;
2424 *comps = 4;
2425 return;
2426 case MESA_FORMAT_R_INT32:
2427 *datatype = GL_INT;
2428 *comps = 1;
2429 return;
2430 case MESA_FORMAT_RG_INT32:
2431 *datatype = GL_INT;
2432 *comps = 2;
2433 return;
2434 case MESA_FORMAT_RGB_INT32:
2435 *datatype = GL_INT;
2436 *comps = 3;
2437 return;
2438 case MESA_FORMAT_RGBA_INT32:
2439 *datatype = GL_INT;
2440 *comps = 4;
2441 return;
2442
2443 /**
2444 * \name Non-normalized unsigned integer formats.
2445 */
2446 case MESA_FORMAT_R_UINT8:
2447 *datatype = GL_UNSIGNED_BYTE;
2448 *comps = 1;
2449 return;
2450 case MESA_FORMAT_RG_UINT8:
2451 *datatype = GL_UNSIGNED_BYTE;
2452 *comps = 2;
2453 return;
2454 case MESA_FORMAT_RGB_UINT8:
2455 *datatype = GL_UNSIGNED_BYTE;
2456 *comps = 3;
2457 return;
2458 case MESA_FORMAT_RGBA_UINT8:
2459 *datatype = GL_UNSIGNED_BYTE;
2460 *comps = 4;
2461 return;
2462 case MESA_FORMAT_R_UINT16:
2463 *datatype = GL_UNSIGNED_SHORT;
2464 *comps = 1;
2465 return;
2466 case MESA_FORMAT_RG_UINT16:
2467 *datatype = GL_UNSIGNED_SHORT;
2468 *comps = 2;
2469 return;
2470 case MESA_FORMAT_RGB_UINT16:
2471 *datatype = GL_UNSIGNED_SHORT;
2472 *comps = 3;
2473 return;
2474 case MESA_FORMAT_RGBA_UINT16:
2475 *datatype = GL_UNSIGNED_SHORT;
2476 *comps = 4;
2477 return;
2478 case MESA_FORMAT_R_UINT32:
2479 *datatype = GL_UNSIGNED_INT;
2480 *comps = 1;
2481 return;
2482 case MESA_FORMAT_RG_UINT32:
2483 *datatype = GL_UNSIGNED_INT;
2484 *comps = 2;
2485 return;
2486 case MESA_FORMAT_RGB_UINT32:
2487 *datatype = GL_UNSIGNED_INT;
2488 *comps = 3;
2489 return;
2490 case MESA_FORMAT_RGBA_UINT32:
2491 *datatype = GL_UNSIGNED_INT;
2492 *comps = 4;
2493 return;
2494
2495 case MESA_FORMAT_RGB9_E5_FLOAT:
2496 *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
2497 *comps = 3;
2498 return;
2499
2500 case MESA_FORMAT_R11_G11_B10_FLOAT:
2501 *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
2502 *comps = 3;
2503 return;
2504
2505 case MESA_FORMAT_ARGB2101010_UINT:
2506 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2507 *comps = 4;
2508 return;
2509
2510 case MESA_FORMAT_COUNT:
2511 assert(0);
2512 return;
2513
2514 case MESA_FORMAT_NONE:
2515 /* For debug builds, warn if any formats are not handled */
2516 #ifdef DEBUG
2517 default:
2518 #endif
2519 _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
2520 _mesa_get_format_name(format));
2521 *datatype = 0;
2522 *comps = 1;
2523 }
2524 }
2525
2526 /**
2527 * Check if a gl_format exactly matches a GL formaat/type combination
2528 * such that we can use memcpy() from one to the other.
2529 * \param gl_format a MESA_FORMAT_x value
2530 * \param format the user-specified image format
2531 * \param type the user-specified image datatype
2532 * \param swapBytes typically the current pixel pack/unpack byteswap state
2533 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
2534 */
2535 GLboolean
2536 _mesa_format_matches_format_and_type(gl_format gl_format,
2537 GLenum format, GLenum type,
2538 GLboolean swapBytes)
2539 {
2540 const GLboolean littleEndian = _mesa_little_endian();
2541
2542 /* Note: When reading a GL format/type combination, the format lists channel
2543 * assignments from most significant channel in the type to least
2544 * significant. A type with _REV indicates that the assignments are
2545 * swapped, so they are listed from least significant to most significant.
2546 *
2547 * For sanity, please keep this switch statement ordered the same as the
2548 * enums in formats.h.
2549 */
2550
2551 switch (gl_format) {
2552
2553 case MESA_FORMAT_NONE:
2554 case MESA_FORMAT_COUNT:
2555 return GL_FALSE;
2556
2557 case MESA_FORMAT_RGBA8888:
2558 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
2559 return GL_TRUE;
2560
2561 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
2562 return GL_TRUE;
2563
2564 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
2565 return GL_TRUE;
2566
2567 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV
2568 && !swapBytes)
2569 return GL_TRUE;
2570
2571 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8
2572 && swapBytes)
2573 return GL_TRUE;
2574
2575 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
2576 return GL_TRUE;
2577
2578 return GL_FALSE;
2579
2580 case MESA_FORMAT_RGBA8888_REV:
2581 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2582 !swapBytes)
2583 return GL_TRUE;
2584
2585 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
2586 return GL_TRUE;
2587
2588 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && littleEndian)
2589 return GL_TRUE;
2590
2591 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8 &&
2592 !swapBytes)
2593 return GL_TRUE;
2594
2595 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2596 swapBytes)
2597 return GL_TRUE;
2598
2599 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && !littleEndian)
2600 return GL_TRUE;
2601
2602 return GL_FALSE;
2603
2604 case MESA_FORMAT_ARGB8888:
2605 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2606 !swapBytes)
2607 return GL_TRUE;
2608
2609 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
2610 return GL_TRUE;
2611
2612 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
2613 return GL_TRUE;
2614
2615 return GL_FALSE;
2616
2617 case MESA_FORMAT_ARGB8888_REV:
2618 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
2619 return GL_TRUE;
2620
2621 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2622 swapBytes)
2623 return GL_TRUE;
2624
2625 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
2626 return GL_TRUE;
2627
2628 return GL_FALSE;
2629
2630 case MESA_FORMAT_RGBX8888:
2631 case MESA_FORMAT_RGBX8888_REV:
2632 return GL_FALSE;
2633
2634 case MESA_FORMAT_XRGB8888:
2635 case MESA_FORMAT_XRGB8888_REV:
2636 return GL_FALSE;
2637
2638 case MESA_FORMAT_RGB888:
2639 return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
2640
2641 case MESA_FORMAT_BGR888:
2642 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
2643
2644 case MESA_FORMAT_RGB565:
2645 return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 && !swapBytes;
2646
2647 case MESA_FORMAT_RGB565_REV:
2648 /* Some of the 16-bit MESA_FORMATs that would seem to correspond to
2649 * GL_UNSIGNED_SHORT_* are byte-swapped instead of channel-reversed,
2650 * according to formats.h, so they can't be matched.
2651 */
2652 return GL_FALSE;
2653
2654 case MESA_FORMAT_ARGB4444:
2655 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
2656 !swapBytes;
2657
2658 case MESA_FORMAT_ARGB4444_REV:
2659 return GL_FALSE;
2660
2661 case MESA_FORMAT_RGBA5551:
2662 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
2663 !swapBytes;
2664
2665 case MESA_FORMAT_ARGB1555:
2666 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
2667 !swapBytes;
2668
2669 case MESA_FORMAT_ARGB1555_REV:
2670 return GL_FALSE;
2671
2672 case MESA_FORMAT_AL44:
2673 return GL_FALSE;
2674 case MESA_FORMAT_AL88:
2675 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
2676 case MESA_FORMAT_AL88_REV:
2677 return GL_FALSE;
2678
2679 case MESA_FORMAT_AL1616:
2680 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian && !swapBytes;
2681 case MESA_FORMAT_AL1616_REV:
2682 return GL_FALSE;
2683
2684 case MESA_FORMAT_RGB332:
2685 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
2686
2687 case MESA_FORMAT_A8:
2688 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
2689 case MESA_FORMAT_A16:
2690 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT &&
2691 littleEndian && !swapBytes;
2692 case MESA_FORMAT_L8:
2693 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
2694 case MESA_FORMAT_L16:
2695 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT &&
2696 littleEndian && !swapBytes;
2697 case MESA_FORMAT_I8:
2698 return format == GL_INTENSITY && type == GL_UNSIGNED_BYTE;
2699 case MESA_FORMAT_I16:
2700 return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT &&
2701 littleEndian && !swapBytes;
2702
2703 case MESA_FORMAT_YCBCR:
2704 case MESA_FORMAT_YCBCR_REV:
2705 return GL_FALSE;
2706
2707 case MESA_FORMAT_R8:
2708 return format == GL_RED && type == GL_UNSIGNED_BYTE;
2709 case MESA_FORMAT_GR88:
2710 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
2711 case MESA_FORMAT_RG88:
2712 return GL_FALSE;
2713
2714 case MESA_FORMAT_R16:
2715 return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian &&
2716 !swapBytes;
2717 case MESA_FORMAT_RG1616:
2718 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian &&
2719 !swapBytes;
2720 case MESA_FORMAT_RG1616_REV:
2721 return GL_FALSE;
2722
2723 case MESA_FORMAT_ARGB2101010:
2724 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2725 !swapBytes;
2726
2727 case MESA_FORMAT_Z24_S8:
2728 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8 &&
2729 !swapBytes;
2730 case MESA_FORMAT_Z24_X8:
2731 case MESA_FORMAT_S8_Z24:
2732 return GL_FALSE;
2733
2734 case MESA_FORMAT_Z16:
2735 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT &&
2736 !swapBytes;
2737
2738 case MESA_FORMAT_X8_Z24:
2739 return GL_FALSE;
2740
2741 case MESA_FORMAT_Z32:
2742 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT &&
2743 !swapBytes;
2744
2745 case MESA_FORMAT_S8:
2746 return format == GL_STENCIL_INDEX && type == GL_UNSIGNED_BYTE;
2747
2748 case MESA_FORMAT_SRGB8:
2749 case MESA_FORMAT_SRGBA8:
2750 case MESA_FORMAT_SARGB8:
2751 case MESA_FORMAT_SL8:
2752 case MESA_FORMAT_SLA8:
2753 case MESA_FORMAT_SRGB_DXT1:
2754 case MESA_FORMAT_SRGBA_DXT1:
2755 case MESA_FORMAT_SRGBA_DXT3:
2756 case MESA_FORMAT_SRGBA_DXT5:
2757 return GL_FALSE;
2758
2759 case MESA_FORMAT_RGB_FXT1:
2760 case MESA_FORMAT_RGBA_FXT1:
2761 case MESA_FORMAT_RGB_DXT1:
2762 case MESA_FORMAT_RGBA_DXT1:
2763 case MESA_FORMAT_RGBA_DXT3:
2764 case MESA_FORMAT_RGBA_DXT5:
2765 return GL_FALSE;
2766
2767 case MESA_FORMAT_RGBA_FLOAT32:
2768 return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
2769 case MESA_FORMAT_RGBA_FLOAT16:
2770 return format == GL_RGBA && type == GL_HALF_FLOAT && !swapBytes;
2771
2772 case MESA_FORMAT_RGB_FLOAT32:
2773 return format == GL_RGB && type == GL_FLOAT && !swapBytes;
2774 case MESA_FORMAT_RGB_FLOAT16:
2775 return format == GL_RGB && type == GL_HALF_FLOAT && !swapBytes;
2776
2777 case MESA_FORMAT_ALPHA_FLOAT32:
2778 return format == GL_ALPHA && type == GL_FLOAT && !swapBytes;
2779 case MESA_FORMAT_ALPHA_FLOAT16:
2780 return format == GL_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
2781
2782 case MESA_FORMAT_LUMINANCE_FLOAT32:
2783 return format == GL_LUMINANCE && type == GL_FLOAT && !swapBytes;
2784 case MESA_FORMAT_LUMINANCE_FLOAT16:
2785 return format == GL_LUMINANCE && type == GL_HALF_FLOAT && !swapBytes;
2786
2787 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2788 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT && !swapBytes;
2789 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2790 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
2791
2792 case MESA_FORMAT_INTENSITY_FLOAT32:
2793 return format == GL_INTENSITY && type == GL_FLOAT && !swapBytes;
2794 case MESA_FORMAT_INTENSITY_FLOAT16:
2795 return format == GL_INTENSITY && type == GL_HALF_FLOAT && !swapBytes;
2796
2797 case MESA_FORMAT_R_FLOAT32:
2798 return format == GL_RED && type == GL_FLOAT && !swapBytes;
2799 case MESA_FORMAT_R_FLOAT16:
2800 return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
2801
2802 case MESA_FORMAT_RG_FLOAT32:
2803 return format == GL_RG && type == GL_FLOAT && !swapBytes;
2804 case MESA_FORMAT_RG_FLOAT16:
2805 return format == GL_RG && type == GL_HALF_FLOAT && !swapBytes;
2806
2807 /* FINISHME: What do we want to do for GL_EXT_texture_integer? */
2808 case MESA_FORMAT_ALPHA_UINT8:
2809 case MESA_FORMAT_ALPHA_UINT16:
2810 case MESA_FORMAT_ALPHA_UINT32:
2811 case MESA_FORMAT_ALPHA_INT8:
2812 case MESA_FORMAT_ALPHA_INT16:
2813 case MESA_FORMAT_ALPHA_INT32:
2814 return GL_FALSE;
2815
2816 case MESA_FORMAT_INTENSITY_UINT8:
2817 case MESA_FORMAT_INTENSITY_UINT16:
2818 case MESA_FORMAT_INTENSITY_UINT32:
2819 case MESA_FORMAT_INTENSITY_INT8:
2820 case MESA_FORMAT_INTENSITY_INT16:
2821 case MESA_FORMAT_INTENSITY_INT32:
2822 return GL_FALSE;
2823
2824 case MESA_FORMAT_LUMINANCE_UINT8:
2825 case MESA_FORMAT_LUMINANCE_UINT16:
2826 case MESA_FORMAT_LUMINANCE_UINT32:
2827 case MESA_FORMAT_LUMINANCE_INT8:
2828 case MESA_FORMAT_LUMINANCE_INT16:
2829 case MESA_FORMAT_LUMINANCE_INT32:
2830 return GL_FALSE;
2831
2832 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2833 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2834 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2835 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2836 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2837 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2838 return GL_FALSE;
2839
2840 case MESA_FORMAT_R_INT8:
2841 case MESA_FORMAT_RG_INT8:
2842 case MESA_FORMAT_RGB_INT8:
2843 case MESA_FORMAT_RGBA_INT8:
2844 case MESA_FORMAT_R_INT16:
2845 case MESA_FORMAT_RG_INT16:
2846 case MESA_FORMAT_RGB_INT16:
2847 case MESA_FORMAT_RGBA_INT16:
2848 case MESA_FORMAT_R_INT32:
2849 case MESA_FORMAT_RG_INT32:
2850 case MESA_FORMAT_RGB_INT32:
2851 case MESA_FORMAT_RGBA_INT32:
2852 return GL_FALSE;
2853
2854 case MESA_FORMAT_R_UINT8:
2855 case MESA_FORMAT_RG_UINT8:
2856 case MESA_FORMAT_RGB_UINT8:
2857 case MESA_FORMAT_RGBA_UINT8:
2858 case MESA_FORMAT_R_UINT16:
2859 case MESA_FORMAT_RG_UINT16:
2860 case MESA_FORMAT_RGB_UINT16:
2861 case MESA_FORMAT_RGBA_UINT16:
2862 case MESA_FORMAT_R_UINT32:
2863 case MESA_FORMAT_RG_UINT32:
2864 case MESA_FORMAT_RGB_UINT32:
2865 case MESA_FORMAT_RGBA_UINT32:
2866 return GL_FALSE;
2867
2868 case MESA_FORMAT_DUDV8:
2869 case MESA_FORMAT_SIGNED_R8:
2870 case MESA_FORMAT_SIGNED_RG88_REV:
2871 case MESA_FORMAT_SIGNED_RGBX8888:
2872 return GL_FALSE;
2873
2874 case MESA_FORMAT_SIGNED_RGBA8888:
2875 if (format == GL_RGBA && type == GL_BYTE && !littleEndian)
2876 return GL_TRUE;
2877
2878 if (format == GL_ABGR_EXT && type == GL_BYTE && littleEndian)
2879 return GL_TRUE;
2880
2881 return GL_FALSE;
2882
2883 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2884 if (format == GL_RGBA && type == GL_BYTE && littleEndian)
2885 return GL_TRUE;
2886
2887 if (format == GL_ABGR_EXT && type == GL_BYTE && !littleEndian)
2888 return GL_TRUE;
2889
2890 return GL_FALSE;
2891
2892 case MESA_FORMAT_SIGNED_R16:
2893 case MESA_FORMAT_SIGNED_GR1616:
2894 case MESA_FORMAT_SIGNED_RGB_16:
2895 case MESA_FORMAT_SIGNED_RGBA_16:
2896 case MESA_FORMAT_RGBA_16:
2897 /* FINISHME: SNORM */
2898 return GL_FALSE;
2899
2900 case MESA_FORMAT_RED_RGTC1:
2901 case MESA_FORMAT_SIGNED_RED_RGTC1:
2902 case MESA_FORMAT_RG_RGTC2:
2903 case MESA_FORMAT_SIGNED_RG_RGTC2:
2904 return GL_FALSE;
2905
2906 case MESA_FORMAT_L_LATC1:
2907 case MESA_FORMAT_SIGNED_L_LATC1:
2908 case MESA_FORMAT_LA_LATC2:
2909 case MESA_FORMAT_SIGNED_LA_LATC2:
2910 return GL_FALSE;
2911
2912 case MESA_FORMAT_ETC1_RGB8:
2913 return GL_FALSE;
2914
2915 case MESA_FORMAT_SIGNED_A8:
2916 case MESA_FORMAT_SIGNED_L8:
2917 case MESA_FORMAT_SIGNED_AL88:
2918 case MESA_FORMAT_SIGNED_I8:
2919 case MESA_FORMAT_SIGNED_A16:
2920 case MESA_FORMAT_SIGNED_L16:
2921 case MESA_FORMAT_SIGNED_AL1616:
2922 case MESA_FORMAT_SIGNED_I16:
2923 /* FINISHME: SNORM */
2924 return GL_FALSE;
2925
2926 case MESA_FORMAT_ARGB2101010_UINT:
2927 return (format == GL_BGRA_INTEGER_EXT &&
2928 type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2929 !swapBytes);
2930
2931 case MESA_FORMAT_RGB9_E5_FLOAT:
2932 return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV &&
2933 !swapBytes;
2934
2935 case MESA_FORMAT_R11_G11_B10_FLOAT:
2936 return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV &&
2937 !swapBytes;
2938
2939 case MESA_FORMAT_Z32_FLOAT:
2940 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT && !swapBytes;
2941
2942 case MESA_FORMAT_Z32_FLOAT_X24S8:
2943 return GL_FALSE;
2944 }
2945
2946 return GL_FALSE;
2947 }
2948