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Revert "mesa/formats: refactor by collapsing cases in switch statement by type"
[mesa.git] / src / mesa / main / formats.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (c) 2008-2009 VMware, Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include "imports.h"
28 #include "formats.h"
29 #include "macros.h"
30 #include "glformats.h"
31 #include "c11/threads.h"
32 #include "util/hash_table.h"
33
34 /**
35 * Information about texture formats.
36 */
37 struct gl_format_info
38 {
39 mesa_format Name;
40
41 /** text name for debugging */
42 const char *StrName;
43
44 enum mesa_format_layout Layout;
45
46 /**
47 * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
48 * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
49 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
50 */
51 GLenum BaseFormat;
52
53 /**
54 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
55 * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
56 */
57 GLenum DataType;
58
59 GLubyte RedBits;
60 GLubyte GreenBits;
61 GLubyte BlueBits;
62 GLubyte AlphaBits;
63 GLubyte LuminanceBits;
64 GLubyte IntensityBits;
65 GLubyte DepthBits;
66 GLubyte StencilBits;
67
68 /**
69 * To describe compressed formats. If not compressed, Width=Height=1.
70 */
71 GLubyte BlockWidth, BlockHeight;
72 GLubyte BytesPerBlock;
73
74 uint8_t Swizzle[4];
75 mesa_array_format ArrayFormat;
76 };
77
78 #include "format_info.h"
79
80 static const struct gl_format_info *
81 _mesa_get_format_info(mesa_format format)
82 {
83 const struct gl_format_info *info = &format_info[format];
84 assert(info->Name == format);
85 return info;
86 }
87
88
89 /** Return string name of format (for debugging) */
90 const char *
91 _mesa_get_format_name(mesa_format format)
92 {
93 const struct gl_format_info *info = _mesa_get_format_info(format);
94 return info->StrName;
95 }
96
97
98
99 /**
100 * Return bytes needed to store a block of pixels in the given format.
101 * Normally, a block is 1x1 (a single pixel). But for compressed formats
102 * a block may be 4x4 or 8x4, etc.
103 *
104 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
105 */
106 GLint
107 _mesa_get_format_bytes(mesa_format format)
108 {
109 const struct gl_format_info *info = _mesa_get_format_info(format);
110 assert(info->BytesPerBlock);
111 assert(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
112 _mesa_is_format_compressed(format));
113 return info->BytesPerBlock;
114 }
115
116
117 /**
118 * Return bits per component for the given format.
119 * \param format one of MESA_FORMAT_x
120 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
121 */
122 GLint
123 _mesa_get_format_bits(mesa_format format, GLenum pname)
124 {
125 const struct gl_format_info *info = _mesa_get_format_info(format);
126
127 switch (pname) {
128 case GL_RED_BITS:
129 case GL_TEXTURE_RED_SIZE:
130 case GL_RENDERBUFFER_RED_SIZE_EXT:
131 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
132 return info->RedBits;
133 case GL_GREEN_BITS:
134 case GL_TEXTURE_GREEN_SIZE:
135 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
136 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
137 return info->GreenBits;
138 case GL_BLUE_BITS:
139 case GL_TEXTURE_BLUE_SIZE:
140 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
141 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
142 return info->BlueBits;
143 case GL_ALPHA_BITS:
144 case GL_TEXTURE_ALPHA_SIZE:
145 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
146 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
147 return info->AlphaBits;
148 case GL_TEXTURE_INTENSITY_SIZE:
149 return info->IntensityBits;
150 case GL_TEXTURE_LUMINANCE_SIZE:
151 return info->LuminanceBits;
152 case GL_INDEX_BITS:
153 return 0;
154 case GL_DEPTH_BITS:
155 case GL_TEXTURE_DEPTH_SIZE_ARB:
156 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
157 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
158 return info->DepthBits;
159 case GL_STENCIL_BITS:
160 case GL_TEXTURE_STENCIL_SIZE_EXT:
161 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
162 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
163 return info->StencilBits;
164 default:
165 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
166 return 0;
167 }
168 }
169
170
171 GLuint
172 _mesa_get_format_max_bits(mesa_format format)
173 {
174 const struct gl_format_info *info = _mesa_get_format_info(format);
175 GLuint max = MAX2(info->RedBits, info->GreenBits);
176 max = MAX2(max, info->BlueBits);
177 max = MAX2(max, info->AlphaBits);
178 max = MAX2(max, info->LuminanceBits);
179 max = MAX2(max, info->IntensityBits);
180 max = MAX2(max, info->DepthBits);
181 max = MAX2(max, info->StencilBits);
182 return max;
183 }
184
185
186 /**
187 * Return the layout type of the given format.
188 * The return value will be one of:
189 * MESA_FORMAT_LAYOUT_ARRAY
190 * MESA_FORMAT_LAYOUT_PACKED
191 * MESA_FORMAT_LAYOUT_S3TC
192 * MESA_FORMAT_LAYOUT_RGTC
193 * MESA_FORMAT_LAYOUT_FXT1
194 * MESA_FORMAT_LAYOUT_ETC1
195 * MESA_FORMAT_LAYOUT_ETC2
196 * MESA_FORMAT_LAYOUT_BPTC
197 * MESA_FORMAT_LAYOUT_OTHER
198 */
199 extern enum mesa_format_layout
200 _mesa_get_format_layout(mesa_format format)
201 {
202 const struct gl_format_info *info = _mesa_get_format_info(format);
203 return info->Layout;
204 }
205
206
207 /**
208 * Return the data type (or more specifically, the data representation)
209 * for the given format.
210 * The return value will be one of:
211 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
212 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
213 * GL_UNSIGNED_INT = an ordinary unsigned integer
214 * GL_INT = an ordinary signed integer
215 * GL_FLOAT = an ordinary float
216 */
217 GLenum
218 _mesa_get_format_datatype(mesa_format format)
219 {
220 const struct gl_format_info *info = _mesa_get_format_info(format);
221 return info->DataType;
222 }
223
224 static GLenum
225 get_base_format_for_array_format(mesa_array_format format)
226 {
227 uint8_t swizzle[4];
228 int num_channels;
229
230 _mesa_array_format_get_swizzle(format, swizzle);
231 num_channels = _mesa_array_format_get_num_channels(format);
232
233 switch (num_channels) {
234 case 4:
235 /* FIXME: RGBX formats have 4 channels, but their base format is GL_RGB.
236 * This is not really a problem for now because we only create array
237 * formats from GL format/type combinations, and these cannot specify
238 * RGBX formats.
239 */
240 return GL_RGBA;
241 case 3:
242 return GL_RGB;
243 case 2:
244 if (swizzle[0] == 0 &&
245 swizzle[1] == 0 &&
246 swizzle[2] == 0 &&
247 swizzle[3] == 1)
248 return GL_LUMINANCE_ALPHA;
249 if (swizzle[0] == 1 &&
250 swizzle[1] == 1 &&
251 swizzle[2] == 1 &&
252 swizzle[3] == 0)
253 return GL_LUMINANCE_ALPHA;
254 if (swizzle[0] == 0 &&
255 swizzle[1] == 1 &&
256 swizzle[2] == 4 &&
257 swizzle[3] == 5)
258 return GL_RG;
259 if (swizzle[0] == 1 &&
260 swizzle[1] == 0 &&
261 swizzle[2] == 4 &&
262 swizzle[3] == 5)
263 return GL_RG;
264 break;
265 case 1:
266 if (swizzle[0] == 0 &&
267 swizzle[1] == 0 &&
268 swizzle[2] == 0 &&
269 swizzle[3] == 5)
270 return GL_LUMINANCE;
271 if (swizzle[0] == 0 &&
272 swizzle[1] == 0 &&
273 swizzle[2] == 0 &&
274 swizzle[3] == 0)
275 return GL_INTENSITY;
276 if (swizzle[0] <= MESA_FORMAT_SWIZZLE_W)
277 return GL_RED;
278 if (swizzle[1] <= MESA_FORMAT_SWIZZLE_W)
279 return GL_GREEN;
280 if (swizzle[2] <= MESA_FORMAT_SWIZZLE_W)
281 return GL_BLUE;
282 if (swizzle[3] <= MESA_FORMAT_SWIZZLE_W)
283 return GL_ALPHA;
284 break;
285 }
286
287 unreachable("Unsupported format");
288 }
289
290 /**
291 * Return the basic format for the given type. The result will be one of
292 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
293 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
294 * This functions accepts a mesa_format or a mesa_array_format.
295 */
296 GLenum
297 _mesa_get_format_base_format(uint32_t format)
298 {
299 if (!_mesa_format_is_mesa_array_format(format)) {
300 const struct gl_format_info *info = _mesa_get_format_info(format);
301 return info->BaseFormat;
302 } else {
303 return get_base_format_for_array_format(format);
304 }
305 }
306
307
308 /**
309 * Return the block size (in pixels) for the given format. Normally
310 * the block size is 1x1. But compressed formats will have block sizes
311 * of 4x4 or 8x4 pixels, etc.
312 * \param bw returns block width in pixels
313 * \param bh returns block height in pixels
314 */
315 void
316 _mesa_get_format_block_size(mesa_format format, GLuint *bw, GLuint *bh)
317 {
318 const struct gl_format_info *info = _mesa_get_format_info(format);
319 *bw = info->BlockWidth;
320 *bh = info->BlockHeight;
321 }
322
323
324 /**
325 * Returns the an array of four numbers representing the transformation
326 * from the RGBA or SZ colorspace to the given format. For array formats,
327 * the i'th RGBA component is given by:
328 *
329 * if (swizzle[i] <= MESA_FORMAT_SWIZZLE_W)
330 * comp = data[swizzle[i]];
331 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ZERO)
332 * comp = 0;
333 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ONE)
334 * comp = 1;
335 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_NONE)
336 * // data does not contain a channel of this format
337 *
338 * For packed formats, the swizzle gives the number of components left of
339 * the least significant bit.
340 *
341 * Compressed formats have no swizzle.
342 */
343 void
344 _mesa_get_format_swizzle(mesa_format format, uint8_t swizzle_out[4])
345 {
346 const struct gl_format_info *info = _mesa_get_format_info(format);
347 memcpy(swizzle_out, info->Swizzle, sizeof(info->Swizzle));
348 }
349
350 mesa_array_format
351 _mesa_array_format_flip_channels(mesa_array_format format)
352 {
353 int num_channels;
354 uint8_t swizzle[4];
355
356 num_channels = _mesa_array_format_get_num_channels(format);
357 _mesa_array_format_get_swizzle(format, swizzle);
358
359 if (num_channels == 1)
360 return format;
361
362 if (num_channels == 2) {
363 /* Assert that the swizzle makes sense for 2 channels */
364 for (unsigned i = 0; i < 4; i++)
365 assert(swizzle[i] != 2 && swizzle[i] != 3);
366
367 static const uint8_t flip_xy[6] = { 1, 0, 2, 3, 4, 5 };
368 _mesa_array_format_set_swizzle(&format,
369 flip_xy[swizzle[0]], flip_xy[swizzle[1]],
370 flip_xy[swizzle[2]], flip_xy[swizzle[3]]);
371 return format;
372 }
373
374 if (num_channels == 4) {
375 static const uint8_t flip[6] = { 3, 2, 1, 0, 4, 5 };
376 _mesa_array_format_set_swizzle(&format,
377 flip[swizzle[0]], flip[swizzle[1]],
378 flip[swizzle[2]], flip[swizzle[3]]);
379 return format;
380 }
381
382 unreachable("Invalid array format");
383 }
384
385 uint32_t
386 _mesa_format_to_array_format(mesa_format format)
387 {
388 const struct gl_format_info *info = _mesa_get_format_info(format);
389 if (info->ArrayFormat && !_mesa_little_endian() &&
390 info->Layout == MESA_FORMAT_LAYOUT_PACKED)
391 return _mesa_array_format_flip_channels(info->ArrayFormat);
392 else
393 return info->ArrayFormat;
394 }
395
396 static struct hash_table *format_array_format_table;
397 static once_flag format_array_format_table_exists = ONCE_FLAG_INIT;
398
399 static bool
400 array_formats_equal(const void *a, const void *b)
401 {
402 return (intptr_t)a == (intptr_t)b;
403 }
404
405 static void
406 format_array_format_table_init(void)
407 {
408 const struct gl_format_info *info;
409 mesa_array_format array_format;
410 unsigned f;
411
412 format_array_format_table = _mesa_hash_table_create(NULL, NULL,
413 array_formats_equal);
414
415 if (!format_array_format_table) {
416 _mesa_error_no_memory(__func__);
417 return;
418 }
419
420 for (f = 1; f < MESA_FORMAT_COUNT; ++f) {
421 info = _mesa_get_format_info(f);
422 if (!info->ArrayFormat)
423 continue;
424
425 if (_mesa_little_endian()) {
426 array_format = info->ArrayFormat;
427 } else {
428 array_format = _mesa_array_format_flip_channels(info->ArrayFormat);
429 }
430
431 /* This can happen and does for some of the BGR formats. Let's take
432 * the first one in the list.
433 */
434 if (_mesa_hash_table_search_pre_hashed(format_array_format_table,
435 array_format,
436 (void *)(intptr_t)array_format))
437 continue;
438
439 _mesa_hash_table_insert_pre_hashed(format_array_format_table,
440 array_format,
441 (void *)(intptr_t)array_format,
442 (void *)(intptr_t)f);
443 }
444 }
445
446 mesa_format
447 _mesa_format_from_array_format(uint32_t array_format)
448 {
449 struct hash_entry *entry;
450
451 assert(_mesa_format_is_mesa_array_format(array_format));
452
453 call_once(&format_array_format_table_exists, format_array_format_table_init);
454
455 if (!format_array_format_table) {
456 static const once_flag once_flag_init = ONCE_FLAG_INIT;
457 format_array_format_table_exists = once_flag_init;
458 return MESA_FORMAT_NONE;
459 }
460
461 entry = _mesa_hash_table_search_pre_hashed(format_array_format_table,
462 array_format,
463 (void *)(intptr_t)array_format);
464 if (entry)
465 return (intptr_t)entry->data;
466 else
467 return MESA_FORMAT_NONE;
468 }
469
470 /** Is the given format a compressed format? */
471 GLboolean
472 _mesa_is_format_compressed(mesa_format format)
473 {
474 const struct gl_format_info *info = _mesa_get_format_info(format);
475 return info->BlockWidth > 1 || info->BlockHeight > 1;
476 }
477
478
479 /**
480 * Determine if the given format represents a packed depth/stencil buffer.
481 */
482 GLboolean
483 _mesa_is_format_packed_depth_stencil(mesa_format format)
484 {
485 const struct gl_format_info *info = _mesa_get_format_info(format);
486
487 return info->BaseFormat == GL_DEPTH_STENCIL;
488 }
489
490
491 /**
492 * Is the given format a signed/unsigned integer color format?
493 */
494 GLboolean
495 _mesa_is_format_integer_color(mesa_format format)
496 {
497 const struct gl_format_info *info = _mesa_get_format_info(format);
498 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
499 info->BaseFormat != GL_DEPTH_COMPONENT &&
500 info->BaseFormat != GL_DEPTH_STENCIL &&
501 info->BaseFormat != GL_STENCIL_INDEX;
502 }
503
504
505 /**
506 * Is the given format an unsigned integer format?
507 */
508 GLboolean
509 _mesa_is_format_unsigned(mesa_format format)
510 {
511 const struct gl_format_info *info = _mesa_get_format_info(format);
512 return _mesa_is_type_unsigned(info->DataType);
513 }
514
515
516 /**
517 * Does the given format store signed values?
518 */
519 GLboolean
520 _mesa_is_format_signed(mesa_format format)
521 {
522 if (format == MESA_FORMAT_R11G11B10_FLOAT ||
523 format == MESA_FORMAT_R9G9B9E5_FLOAT) {
524 /* these packed float formats only store unsigned values */
525 return GL_FALSE;
526 }
527 else {
528 const struct gl_format_info *info = _mesa_get_format_info(format);
529 return (info->DataType == GL_SIGNED_NORMALIZED ||
530 info->DataType == GL_INT ||
531 info->DataType == GL_FLOAT);
532 }
533 }
534
535 /**
536 * Is the given format an integer format?
537 */
538 GLboolean
539 _mesa_is_format_integer(mesa_format format)
540 {
541 const struct gl_format_info *info = _mesa_get_format_info(format);
542 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT);
543 }
544
545
546 /**
547 * Return true if the given format is a color format.
548 */
549 GLenum
550 _mesa_is_format_color_format(mesa_format format)
551 {
552 const struct gl_format_info *info = _mesa_get_format_info(format);
553 switch (info->BaseFormat) {
554 case GL_DEPTH_COMPONENT:
555 case GL_STENCIL_INDEX:
556 case GL_DEPTH_STENCIL:
557 return false;
558 default:
559 return true;
560 }
561 }
562
563
564 /**
565 * Return color encoding for given format.
566 * \return GL_LINEAR or GL_SRGB
567 */
568 GLenum
569 _mesa_get_format_color_encoding(mesa_format format)
570 {
571 /* XXX this info should be encoded in gl_format_info */
572 switch (format) {
573 case MESA_FORMAT_BGR_SRGB8:
574 case MESA_FORMAT_A8B8G8R8_SRGB:
575 case MESA_FORMAT_B8G8R8A8_SRGB:
576 case MESA_FORMAT_A8R8G8B8_SRGB:
577 case MESA_FORMAT_R8G8B8A8_SRGB:
578 case MESA_FORMAT_L_SRGB8:
579 case MESA_FORMAT_L8A8_SRGB:
580 case MESA_FORMAT_A8L8_SRGB:
581 case MESA_FORMAT_SRGB_DXT1:
582 case MESA_FORMAT_SRGBA_DXT1:
583 case MESA_FORMAT_SRGBA_DXT3:
584 case MESA_FORMAT_SRGBA_DXT5:
585 case MESA_FORMAT_R8G8B8X8_SRGB:
586 case MESA_FORMAT_ETC2_SRGB8:
587 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
588 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
589 case MESA_FORMAT_B8G8R8X8_SRGB:
590 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
591 return GL_SRGB;
592 default:
593 return GL_LINEAR;
594 }
595 }
596
597
598 /**
599 * Return TRUE if format is an ETC2 compressed format specified
600 * by GL_ARB_ES3_compatibility.
601 */
602 bool
603 _mesa_is_format_etc2(mesa_format format)
604 {
605 switch (format) {
606 case MESA_FORMAT_ETC2_RGB8:
607 case MESA_FORMAT_ETC2_SRGB8:
608 case MESA_FORMAT_ETC2_RGBA8_EAC:
609 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
610 case MESA_FORMAT_ETC2_R11_EAC:
611 case MESA_FORMAT_ETC2_RG11_EAC:
612 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
613 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
614 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
615 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
616 return GL_TRUE;
617 default:
618 return GL_FALSE;
619 }
620 }
621
622
623 /**
624 * For an sRGB format, return the corresponding linear color space format.
625 * For non-sRGB formats, return the format as-is.
626 */
627 mesa_format
628 _mesa_get_srgb_format_linear(mesa_format format)
629 {
630 switch (format) {
631 case MESA_FORMAT_BGR_SRGB8:
632 format = MESA_FORMAT_BGR_UNORM8;
633 break;
634 case MESA_FORMAT_A8B8G8R8_SRGB:
635 format = MESA_FORMAT_A8B8G8R8_UNORM;
636 break;
637 case MESA_FORMAT_B8G8R8A8_SRGB:
638 format = MESA_FORMAT_B8G8R8A8_UNORM;
639 break;
640 case MESA_FORMAT_A8R8G8B8_SRGB:
641 format = MESA_FORMAT_A8R8G8B8_UNORM;
642 break;
643 case MESA_FORMAT_R8G8B8A8_SRGB:
644 format = MESA_FORMAT_R8G8B8A8_UNORM;
645 break;
646 case MESA_FORMAT_L_SRGB8:
647 format = MESA_FORMAT_L_UNORM8;
648 break;
649 case MESA_FORMAT_L8A8_SRGB:
650 format = MESA_FORMAT_L8A8_UNORM;
651 break;
652 case MESA_FORMAT_A8L8_SRGB:
653 format = MESA_FORMAT_A8L8_UNORM;
654 break;
655 case MESA_FORMAT_SRGB_DXT1:
656 format = MESA_FORMAT_RGB_DXT1;
657 break;
658 case MESA_FORMAT_SRGBA_DXT1:
659 format = MESA_FORMAT_RGBA_DXT1;
660 break;
661 case MESA_FORMAT_SRGBA_DXT3:
662 format = MESA_FORMAT_RGBA_DXT3;
663 break;
664 case MESA_FORMAT_SRGBA_DXT5:
665 format = MESA_FORMAT_RGBA_DXT5;
666 break;
667 case MESA_FORMAT_R8G8B8X8_SRGB:
668 format = MESA_FORMAT_R8G8B8X8_UNORM;
669 break;
670 case MESA_FORMAT_X8B8G8R8_SRGB:
671 format = MESA_FORMAT_X8B8G8R8_UNORM;
672 break;
673 case MESA_FORMAT_ETC2_SRGB8:
674 format = MESA_FORMAT_ETC2_RGB8;
675 break;
676 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
677 format = MESA_FORMAT_ETC2_RGBA8_EAC;
678 break;
679 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
680 format = MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
681 break;
682 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
683 format = MESA_FORMAT_BPTC_RGBA_UNORM;
684 break;
685 case MESA_FORMAT_B8G8R8X8_SRGB:
686 format = MESA_FORMAT_B8G8R8X8_UNORM;
687 break;
688 case MESA_FORMAT_X8R8G8B8_SRGB:
689 format = MESA_FORMAT_X8R8G8B8_UNORM;
690 break;
691 default:
692 break;
693 }
694 return format;
695 }
696
697
698 /**
699 * If the given format is a compressed format, return a corresponding
700 * uncompressed format.
701 */
702 mesa_format
703 _mesa_get_uncompressed_format(mesa_format format)
704 {
705 switch (format) {
706 case MESA_FORMAT_RGB_FXT1:
707 return MESA_FORMAT_BGR_UNORM8;
708 case MESA_FORMAT_RGBA_FXT1:
709 return MESA_FORMAT_A8B8G8R8_UNORM;
710 case MESA_FORMAT_RGB_DXT1:
711 case MESA_FORMAT_SRGB_DXT1:
712 return MESA_FORMAT_BGR_UNORM8;
713 case MESA_FORMAT_RGBA_DXT1:
714 case MESA_FORMAT_SRGBA_DXT1:
715 return MESA_FORMAT_A8B8G8R8_UNORM;
716 case MESA_FORMAT_RGBA_DXT3:
717 case MESA_FORMAT_SRGBA_DXT3:
718 return MESA_FORMAT_A8B8G8R8_UNORM;
719 case MESA_FORMAT_RGBA_DXT5:
720 case MESA_FORMAT_SRGBA_DXT5:
721 return MESA_FORMAT_A8B8G8R8_UNORM;
722 case MESA_FORMAT_R_RGTC1_UNORM:
723 return MESA_FORMAT_R_UNORM8;
724 case MESA_FORMAT_R_RGTC1_SNORM:
725 return MESA_FORMAT_R_SNORM8;
726 case MESA_FORMAT_RG_RGTC2_UNORM:
727 return MESA_FORMAT_R8G8_UNORM;
728 case MESA_FORMAT_RG_RGTC2_SNORM:
729 return MESA_FORMAT_R8G8_SNORM;
730 case MESA_FORMAT_L_LATC1_UNORM:
731 return MESA_FORMAT_L_UNORM8;
732 case MESA_FORMAT_L_LATC1_SNORM:
733 return MESA_FORMAT_L_SNORM8;
734 case MESA_FORMAT_LA_LATC2_UNORM:
735 return MESA_FORMAT_L8A8_UNORM;
736 case MESA_FORMAT_LA_LATC2_SNORM:
737 return MESA_FORMAT_L8A8_SNORM;
738 case MESA_FORMAT_ETC1_RGB8:
739 case MESA_FORMAT_ETC2_RGB8:
740 case MESA_FORMAT_ETC2_SRGB8:
741 return MESA_FORMAT_BGR_UNORM8;
742 case MESA_FORMAT_ETC2_RGBA8_EAC:
743 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
744 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
745 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
746 return MESA_FORMAT_A8B8G8R8_UNORM;
747 case MESA_FORMAT_ETC2_R11_EAC:
748 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
749 return MESA_FORMAT_R_UNORM16;
750 case MESA_FORMAT_ETC2_RG11_EAC:
751 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
752 return MESA_FORMAT_R16G16_UNORM;
753 case MESA_FORMAT_BPTC_RGBA_UNORM:
754 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
755 return MESA_FORMAT_A8B8G8R8_UNORM;
756 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
757 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
758 return MESA_FORMAT_RGB_FLOAT32;
759 default:
760 #ifdef DEBUG
761 assert(!_mesa_is_format_compressed(format));
762 #endif
763 return format;
764 }
765 }
766
767
768 GLuint
769 _mesa_format_num_components(mesa_format format)
770 {
771 const struct gl_format_info *info = _mesa_get_format_info(format);
772 return ((info->RedBits > 0) +
773 (info->GreenBits > 0) +
774 (info->BlueBits > 0) +
775 (info->AlphaBits > 0) +
776 (info->LuminanceBits > 0) +
777 (info->IntensityBits > 0) +
778 (info->DepthBits > 0) +
779 (info->StencilBits > 0));
780 }
781
782
783 /**
784 * Returns true if a color format has data stored in the R/G/B/A channels,
785 * given an index from 0 to 3.
786 */
787 bool
788 _mesa_format_has_color_component(mesa_format format, int component)
789 {
790 const struct gl_format_info *info = _mesa_get_format_info(format);
791
792 assert(info->BaseFormat != GL_DEPTH_COMPONENT &&
793 info->BaseFormat != GL_DEPTH_STENCIL &&
794 info->BaseFormat != GL_STENCIL_INDEX);
795
796 switch (component) {
797 case 0:
798 return (info->RedBits + info->IntensityBits + info->LuminanceBits) > 0;
799 case 1:
800 return (info->GreenBits + info->IntensityBits + info->LuminanceBits) > 0;
801 case 2:
802 return (info->BlueBits + info->IntensityBits + info->LuminanceBits) > 0;
803 case 3:
804 return (info->AlphaBits + info->IntensityBits) > 0;
805 default:
806 assert(!"Invalid color component: must be 0..3");
807 return false;
808 }
809 }
810
811
812 /**
813 * Return number of bytes needed to store an image of the given size
814 * in the given format.
815 */
816 GLuint
817 _mesa_format_image_size(mesa_format format, GLsizei width,
818 GLsizei height, GLsizei depth)
819 {
820 const struct gl_format_info *info = _mesa_get_format_info(format);
821 /* Strictly speaking, a conditional isn't needed here */
822 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
823 /* compressed format (2D only for now) */
824 const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
825 const GLuint wblocks = (width + bw - 1) / bw;
826 const GLuint hblocks = (height + bh - 1) / bh;
827 const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
828 return sz * depth;
829 }
830 else {
831 /* non-compressed */
832 const GLuint sz = width * height * depth * info->BytesPerBlock;
833 return sz;
834 }
835 }
836
837
838 /**
839 * Same as _mesa_format_image_size() but returns a 64-bit value to
840 * accommodate very large textures.
841 */
842 uint64_t
843 _mesa_format_image_size64(mesa_format format, GLsizei width,
844 GLsizei height, GLsizei depth)
845 {
846 const struct gl_format_info *info = _mesa_get_format_info(format);
847 /* Strictly speaking, a conditional isn't needed here */
848 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
849 /* compressed format (2D only for now) */
850 const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
851 const uint64_t wblocks = (width + bw - 1) / bw;
852 const uint64_t hblocks = (height + bh - 1) / bh;
853 const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
854 return sz * depth;
855 }
856 else {
857 /* non-compressed */
858 const uint64_t sz = ((uint64_t) width *
859 (uint64_t) height *
860 (uint64_t) depth *
861 info->BytesPerBlock);
862 return sz;
863 }
864 }
865
866
867
868 GLint
869 _mesa_format_row_stride(mesa_format format, GLsizei width)
870 {
871 const struct gl_format_info *info = _mesa_get_format_info(format);
872 /* Strictly speaking, a conditional isn't needed here */
873 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
874 /* compressed format */
875 const GLuint bw = info->BlockWidth;
876 const GLuint wblocks = (width + bw - 1) / bw;
877 const GLint stride = wblocks * info->BytesPerBlock;
878 return stride;
879 }
880 else {
881 const GLint stride = width * info->BytesPerBlock;
882 return stride;
883 }
884 }
885
886
887 /**
888 * Debug/test: check that all formats are handled in the
889 * _mesa_format_to_type_and_comps() function. When new pixel formats
890 * are added to Mesa, that function needs to be updated.
891 * This is a no-op after the first call.
892 */
893 static void
894 check_format_to_type_and_comps(void)
895 {
896 mesa_format f;
897
898 for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
899 GLenum datatype = 0;
900 GLuint comps = 0;
901 /* This function will emit a problem/warning if the format is
902 * not handled.
903 */
904 _mesa_format_to_type_and_comps(f, &datatype, &comps);
905 }
906 }
907
908 /**
909 * Do sanity checking of the format info table.
910 */
911 void
912 _mesa_test_formats(void)
913 {
914 GLuint i;
915
916 STATIC_ASSERT(ARRAY_SIZE(format_info) == MESA_FORMAT_COUNT);
917
918 for (i = 0; i < MESA_FORMAT_COUNT; i++) {
919 const struct gl_format_info *info = _mesa_get_format_info(i);
920 assert(info);
921
922 assert(info->Name == i);
923
924 if (info->Name == MESA_FORMAT_NONE)
925 continue;
926
927 if (info->BlockWidth == 1 && info->BlockHeight == 1) {
928 if (info->RedBits > 0) {
929 GLuint t = info->RedBits + info->GreenBits
930 + info->BlueBits + info->AlphaBits;
931 assert(t / 8 <= info->BytesPerBlock);
932 (void) t;
933 }
934 }
935
936 assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
937 info->DataType == GL_SIGNED_NORMALIZED ||
938 info->DataType == GL_UNSIGNED_INT ||
939 info->DataType == GL_INT ||
940 info->DataType == GL_FLOAT ||
941 /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
942 info->DataType == GL_NONE);
943
944 if (info->BaseFormat == GL_RGB) {
945 assert(info->RedBits > 0);
946 assert(info->GreenBits > 0);
947 assert(info->BlueBits > 0);
948 assert(info->AlphaBits == 0);
949 assert(info->LuminanceBits == 0);
950 assert(info->IntensityBits == 0);
951 }
952 else if (info->BaseFormat == GL_RGBA) {
953 assert(info->RedBits > 0);
954 assert(info->GreenBits > 0);
955 assert(info->BlueBits > 0);
956 assert(info->AlphaBits > 0);
957 assert(info->LuminanceBits == 0);
958 assert(info->IntensityBits == 0);
959 }
960 else if (info->BaseFormat == GL_RG) {
961 assert(info->RedBits > 0);
962 assert(info->GreenBits > 0);
963 assert(info->BlueBits == 0);
964 assert(info->AlphaBits == 0);
965 assert(info->LuminanceBits == 0);
966 assert(info->IntensityBits == 0);
967 }
968 else if (info->BaseFormat == GL_RED) {
969 assert(info->RedBits > 0);
970 assert(info->GreenBits == 0);
971 assert(info->BlueBits == 0);
972 assert(info->AlphaBits == 0);
973 assert(info->LuminanceBits == 0);
974 assert(info->IntensityBits == 0);
975 }
976 else if (info->BaseFormat == GL_LUMINANCE) {
977 assert(info->RedBits == 0);
978 assert(info->GreenBits == 0);
979 assert(info->BlueBits == 0);
980 assert(info->AlphaBits == 0);
981 assert(info->LuminanceBits > 0);
982 assert(info->IntensityBits == 0);
983 }
984 else if (info->BaseFormat == GL_INTENSITY) {
985 assert(info->RedBits == 0);
986 assert(info->GreenBits == 0);
987 assert(info->BlueBits == 0);
988 assert(info->AlphaBits == 0);
989 assert(info->LuminanceBits == 0);
990 assert(info->IntensityBits > 0);
991 }
992 }
993
994 check_format_to_type_and_comps();
995 }
996
997
998
999 /**
1000 * Return datatype and number of components per texel for the given mesa_format.
1001 * Only used for mipmap generation code.
1002 */
1003 void
1004 _mesa_format_to_type_and_comps(mesa_format format,
1005 GLenum *datatype, GLuint *comps)
1006 {
1007 switch (format) {
1008 case MESA_FORMAT_A8B8G8R8_UNORM:
1009 case MESA_FORMAT_R8G8B8A8_UNORM:
1010 case MESA_FORMAT_B8G8R8A8_UNORM:
1011 case MESA_FORMAT_A8R8G8B8_UNORM:
1012 case MESA_FORMAT_X8B8G8R8_UNORM:
1013 case MESA_FORMAT_R8G8B8X8_UNORM:
1014 case MESA_FORMAT_B8G8R8X8_UNORM:
1015 case MESA_FORMAT_X8R8G8B8_UNORM:
1016 *datatype = GL_UNSIGNED_BYTE;
1017 *comps = 4;
1018 return;
1019 case MESA_FORMAT_BGR_UNORM8:
1020 case MESA_FORMAT_RGB_UNORM8:
1021 *datatype = GL_UNSIGNED_BYTE;
1022 *comps = 3;
1023 return;
1024 case MESA_FORMAT_B5G6R5_UNORM:
1025 case MESA_FORMAT_R5G6B5_UNORM:
1026 *datatype = GL_UNSIGNED_SHORT_5_6_5;
1027 *comps = 3;
1028 return;
1029
1030 case MESA_FORMAT_B4G4R4A4_UNORM:
1031 case MESA_FORMAT_A4R4G4B4_UNORM:
1032 case MESA_FORMAT_B4G4R4X4_UNORM:
1033 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1034 *comps = 4;
1035 return;
1036
1037 case MESA_FORMAT_B5G5R5A1_UNORM:
1038 case MESA_FORMAT_A1R5G5B5_UNORM:
1039 case MESA_FORMAT_B5G5R5X1_UNORM:
1040 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1041 *comps = 4;
1042 return;
1043
1044 case MESA_FORMAT_B10G10R10A2_UNORM:
1045 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1046 *comps = 4;
1047 return;
1048
1049 case MESA_FORMAT_A1B5G5R5_UNORM:
1050 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
1051 *comps = 4;
1052 return;
1053
1054 case MESA_FORMAT_L4A4_UNORM:
1055 *datatype = MESA_UNSIGNED_BYTE_4_4;
1056 *comps = 2;
1057 return;
1058
1059 case MESA_FORMAT_L8A8_UNORM:
1060 case MESA_FORMAT_A8L8_UNORM:
1061 case MESA_FORMAT_R8G8_UNORM:
1062 case MESA_FORMAT_G8R8_UNORM:
1063 *datatype = GL_UNSIGNED_BYTE;
1064 *comps = 2;
1065 return;
1066
1067 case MESA_FORMAT_L16A16_UNORM:
1068 case MESA_FORMAT_A16L16_UNORM:
1069 case MESA_FORMAT_R16G16_UNORM:
1070 case MESA_FORMAT_G16R16_UNORM:
1071 *datatype = GL_UNSIGNED_SHORT;
1072 *comps = 2;
1073 return;
1074
1075 case MESA_FORMAT_R_UNORM16:
1076 case MESA_FORMAT_A_UNORM16:
1077 case MESA_FORMAT_L_UNORM16:
1078 case MESA_FORMAT_I_UNORM16:
1079 *datatype = GL_UNSIGNED_SHORT;
1080 *comps = 1;
1081 return;
1082
1083 case MESA_FORMAT_R3G3B2_UNORM:
1084 *datatype = GL_UNSIGNED_BYTE_2_3_3_REV;
1085 *comps = 3;
1086 return;
1087 case MESA_FORMAT_A4B4G4R4_UNORM:
1088 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1089 *comps = 4;
1090 return;
1091
1092 case MESA_FORMAT_R4G4B4A4_UNORM:
1093 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1094 *comps = 4;
1095 return;
1096 case MESA_FORMAT_R5G5B5A1_UNORM:
1097 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1098 *comps = 4;
1099 return;
1100 case MESA_FORMAT_A2B10G10R10_UNORM:
1101 case MESA_FORMAT_A2B10G10R10_UINT:
1102 *datatype = GL_UNSIGNED_INT_10_10_10_2;
1103 *comps = 4;
1104 return;
1105 case MESA_FORMAT_A2R10G10B10_UNORM:
1106 case MESA_FORMAT_A2R10G10B10_UINT:
1107 *datatype = GL_UNSIGNED_INT_10_10_10_2;
1108 *comps = 4;
1109 return;
1110
1111 case MESA_FORMAT_B2G3R3_UNORM:
1112 *datatype = GL_UNSIGNED_BYTE_3_3_2;
1113 *comps = 3;
1114 return;
1115
1116 case MESA_FORMAT_A_UNORM8:
1117 case MESA_FORMAT_L_UNORM8:
1118 case MESA_FORMAT_I_UNORM8:
1119 case MESA_FORMAT_R_UNORM8:
1120 case MESA_FORMAT_S_UINT8:
1121 *datatype = GL_UNSIGNED_BYTE;
1122 *comps = 1;
1123 return;
1124
1125 case MESA_FORMAT_YCBCR:
1126 case MESA_FORMAT_YCBCR_REV:
1127 *datatype = GL_UNSIGNED_SHORT;
1128 *comps = 2;
1129 return;
1130
1131 case MESA_FORMAT_S8_UINT_Z24_UNORM:
1132 *datatype = GL_UNSIGNED_INT_24_8_MESA;
1133 *comps = 2;
1134 return;
1135
1136 case MESA_FORMAT_Z24_UNORM_S8_UINT:
1137 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
1138 *comps = 2;
1139 return;
1140
1141 case MESA_FORMAT_Z_UNORM16:
1142 *datatype = GL_UNSIGNED_SHORT;
1143 *comps = 1;
1144 return;
1145
1146 case MESA_FORMAT_Z24_UNORM_X8_UINT:
1147 *datatype = GL_UNSIGNED_INT;
1148 *comps = 1;
1149 return;
1150
1151 case MESA_FORMAT_X8_UINT_Z24_UNORM:
1152 *datatype = GL_UNSIGNED_INT;
1153 *comps = 1;
1154 return;
1155
1156 case MESA_FORMAT_Z_UNORM32:
1157 *datatype = GL_UNSIGNED_INT;
1158 *comps = 1;
1159 return;
1160
1161 case MESA_FORMAT_Z_FLOAT32:
1162 *datatype = GL_FLOAT;
1163 *comps = 1;
1164 return;
1165
1166 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
1167 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
1168 *comps = 1;
1169 return;
1170
1171 case MESA_FORMAT_R_SNORM8:
1172 case MESA_FORMAT_A_SNORM8:
1173 case MESA_FORMAT_L_SNORM8:
1174 case MESA_FORMAT_I_SNORM8:
1175 *datatype = GL_BYTE;
1176 *comps = 1;
1177 return;
1178 case MESA_FORMAT_R8G8_SNORM:
1179 case MESA_FORMAT_L8A8_SNORM:
1180 case MESA_FORMAT_A8L8_SNORM:
1181 *datatype = GL_BYTE;
1182 *comps = 2;
1183 return;
1184 case MESA_FORMAT_A8B8G8R8_SNORM:
1185 case MESA_FORMAT_R8G8B8A8_SNORM:
1186 case MESA_FORMAT_X8B8G8R8_SNORM:
1187 *datatype = GL_BYTE;
1188 *comps = 4;
1189 return;
1190
1191 case MESA_FORMAT_RGBA_UNORM16:
1192 *datatype = GL_UNSIGNED_SHORT;
1193 *comps = 4;
1194 return;
1195
1196 case MESA_FORMAT_R_SNORM16:
1197 case MESA_FORMAT_A_SNORM16:
1198 case MESA_FORMAT_L_SNORM16:
1199 case MESA_FORMAT_I_SNORM16:
1200 *datatype = GL_SHORT;
1201 *comps = 1;
1202 return;
1203 case MESA_FORMAT_R16G16_SNORM:
1204 case MESA_FORMAT_LA_SNORM16:
1205 *datatype = GL_SHORT;
1206 *comps = 2;
1207 return;
1208 case MESA_FORMAT_RGB_SNORM16:
1209 *datatype = GL_SHORT;
1210 *comps = 3;
1211 return;
1212 case MESA_FORMAT_RGBA_SNORM16:
1213 *datatype = GL_SHORT;
1214 *comps = 4;
1215 return;
1216
1217 case MESA_FORMAT_BGR_SRGB8:
1218 *datatype = GL_UNSIGNED_BYTE;
1219 *comps = 3;
1220 return;
1221 case MESA_FORMAT_A8B8G8R8_SRGB:
1222 case MESA_FORMAT_B8G8R8A8_SRGB:
1223 case MESA_FORMAT_A8R8G8B8_SRGB:
1224 case MESA_FORMAT_R8G8B8A8_SRGB:
1225 *datatype = GL_UNSIGNED_BYTE;
1226 *comps = 4;
1227 return;
1228 case MESA_FORMAT_L_SRGB8:
1229 *datatype = GL_UNSIGNED_BYTE;
1230 *comps = 1;
1231 return;
1232 case MESA_FORMAT_L8A8_SRGB:
1233 case MESA_FORMAT_A8L8_SRGB:
1234 *datatype = GL_UNSIGNED_BYTE;
1235 *comps = 2;
1236 return;
1237
1238 case MESA_FORMAT_RGB_FXT1:
1239 case MESA_FORMAT_RGBA_FXT1:
1240 case MESA_FORMAT_RGB_DXT1:
1241 case MESA_FORMAT_RGBA_DXT1:
1242 case MESA_FORMAT_RGBA_DXT3:
1243 case MESA_FORMAT_RGBA_DXT5:
1244 case MESA_FORMAT_SRGB_DXT1:
1245 case MESA_FORMAT_SRGBA_DXT1:
1246 case MESA_FORMAT_SRGBA_DXT3:
1247 case MESA_FORMAT_SRGBA_DXT5:
1248 case MESA_FORMAT_R_RGTC1_UNORM:
1249 case MESA_FORMAT_R_RGTC1_SNORM:
1250 case MESA_FORMAT_RG_RGTC2_UNORM:
1251 case MESA_FORMAT_RG_RGTC2_SNORM:
1252 case MESA_FORMAT_L_LATC1_UNORM:
1253 case MESA_FORMAT_L_LATC1_SNORM:
1254 case MESA_FORMAT_LA_LATC2_UNORM:
1255 case MESA_FORMAT_LA_LATC2_SNORM:
1256 case MESA_FORMAT_ETC1_RGB8:
1257 case MESA_FORMAT_ETC2_RGB8:
1258 case MESA_FORMAT_ETC2_SRGB8:
1259 case MESA_FORMAT_ETC2_RGBA8_EAC:
1260 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
1261 case MESA_FORMAT_ETC2_R11_EAC:
1262 case MESA_FORMAT_ETC2_RG11_EAC:
1263 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
1264 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
1265 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
1266 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
1267 case MESA_FORMAT_BPTC_RGBA_UNORM:
1268 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
1269 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
1270 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
1271 /* XXX generate error instead? */
1272 *datatype = GL_UNSIGNED_BYTE;
1273 *comps = 0;
1274 return;
1275
1276 case MESA_FORMAT_RGBA_FLOAT32:
1277 *datatype = GL_FLOAT;
1278 *comps = 4;
1279 return;
1280 case MESA_FORMAT_RGBA_FLOAT16:
1281 *datatype = GL_HALF_FLOAT_ARB;
1282 *comps = 4;
1283 return;
1284 case MESA_FORMAT_RGB_FLOAT32:
1285 *datatype = GL_FLOAT;
1286 *comps = 3;
1287 return;
1288 case MESA_FORMAT_RGB_FLOAT16:
1289 *datatype = GL_HALF_FLOAT_ARB;
1290 *comps = 3;
1291 return;
1292 case MESA_FORMAT_LA_FLOAT32:
1293 case MESA_FORMAT_RG_FLOAT32:
1294 *datatype = GL_FLOAT;
1295 *comps = 2;
1296 return;
1297 case MESA_FORMAT_LA_FLOAT16:
1298 case MESA_FORMAT_RG_FLOAT16:
1299 *datatype = GL_HALF_FLOAT_ARB;
1300 *comps = 2;
1301 return;
1302 case MESA_FORMAT_A_FLOAT32:
1303 case MESA_FORMAT_L_FLOAT32:
1304 case MESA_FORMAT_I_FLOAT32:
1305 case MESA_FORMAT_R_FLOAT32:
1306 *datatype = GL_FLOAT;
1307 *comps = 1;
1308 return;
1309 case MESA_FORMAT_A_FLOAT16:
1310 case MESA_FORMAT_L_FLOAT16:
1311 case MESA_FORMAT_I_FLOAT16:
1312 case MESA_FORMAT_R_FLOAT16:
1313 *datatype = GL_HALF_FLOAT_ARB;
1314 *comps = 1;
1315 return;
1316
1317 case MESA_FORMAT_A_UINT8:
1318 case MESA_FORMAT_L_UINT8:
1319 case MESA_FORMAT_I_UINT8:
1320 *datatype = GL_UNSIGNED_BYTE;
1321 *comps = 1;
1322 return;
1323 case MESA_FORMAT_LA_UINT8:
1324 *datatype = GL_UNSIGNED_BYTE;
1325 *comps = 2;
1326 return;
1327
1328 case MESA_FORMAT_A_UINT16:
1329 case MESA_FORMAT_L_UINT16:
1330 case MESA_FORMAT_I_UINT16:
1331 *datatype = GL_UNSIGNED_SHORT;
1332 *comps = 1;
1333 return;
1334 case MESA_FORMAT_LA_UINT16:
1335 *datatype = GL_UNSIGNED_SHORT;
1336 *comps = 2;
1337 return;
1338 case MESA_FORMAT_A_UINT32:
1339 case MESA_FORMAT_L_UINT32:
1340 case MESA_FORMAT_I_UINT32:
1341 *datatype = GL_UNSIGNED_INT;
1342 *comps = 1;
1343 return;
1344 case MESA_FORMAT_LA_UINT32:
1345 *datatype = GL_UNSIGNED_INT;
1346 *comps = 2;
1347 return;
1348 case MESA_FORMAT_A_SINT8:
1349 case MESA_FORMAT_L_SINT8:
1350 case MESA_FORMAT_I_SINT8:
1351 *datatype = GL_BYTE;
1352 *comps = 1;
1353 return;
1354 case MESA_FORMAT_LA_SINT8:
1355 *datatype = GL_BYTE;
1356 *comps = 2;
1357 return;
1358
1359 case MESA_FORMAT_A_SINT16:
1360 case MESA_FORMAT_L_SINT16:
1361 case MESA_FORMAT_I_SINT16:
1362 *datatype = GL_SHORT;
1363 *comps = 1;
1364 return;
1365 case MESA_FORMAT_LA_SINT16:
1366 *datatype = GL_SHORT;
1367 *comps = 2;
1368 return;
1369
1370 case MESA_FORMAT_A_SINT32:
1371 case MESA_FORMAT_L_SINT32:
1372 case MESA_FORMAT_I_SINT32:
1373 *datatype = GL_INT;
1374 *comps = 1;
1375 return;
1376 case MESA_FORMAT_LA_SINT32:
1377 *datatype = GL_INT;
1378 *comps = 2;
1379 return;
1380
1381 case MESA_FORMAT_R_SINT8:
1382 *datatype = GL_BYTE;
1383 *comps = 1;
1384 return;
1385 case MESA_FORMAT_RG_SINT8:
1386 *datatype = GL_BYTE;
1387 *comps = 2;
1388 return;
1389 case MESA_FORMAT_RGB_SINT8:
1390 *datatype = GL_BYTE;
1391 *comps = 3;
1392 return;
1393 case MESA_FORMAT_RGBA_SINT8:
1394 *datatype = GL_BYTE;
1395 *comps = 4;
1396 return;
1397 case MESA_FORMAT_R_SINT16:
1398 *datatype = GL_SHORT;
1399 *comps = 1;
1400 return;
1401 case MESA_FORMAT_RG_SINT16:
1402 *datatype = GL_SHORT;
1403 *comps = 2;
1404 return;
1405 case MESA_FORMAT_RGB_SINT16:
1406 *datatype = GL_SHORT;
1407 *comps = 3;
1408 return;
1409 case MESA_FORMAT_RGBA_SINT16:
1410 *datatype = GL_SHORT;
1411 *comps = 4;
1412 return;
1413 case MESA_FORMAT_R_SINT32:
1414 *datatype = GL_INT;
1415 *comps = 1;
1416 return;
1417 case MESA_FORMAT_RG_SINT32:
1418 *datatype = GL_INT;
1419 *comps = 2;
1420 return;
1421 case MESA_FORMAT_RGB_SINT32:
1422 *datatype = GL_INT;
1423 *comps = 3;
1424 return;
1425 case MESA_FORMAT_RGBA_SINT32:
1426 *datatype = GL_INT;
1427 *comps = 4;
1428 return;
1429
1430 /**
1431 * \name Non-normalized unsigned integer formats.
1432 */
1433 case MESA_FORMAT_R_UINT8:
1434 *datatype = GL_UNSIGNED_BYTE;
1435 *comps = 1;
1436 return;
1437 case MESA_FORMAT_RG_UINT8:
1438 *datatype = GL_UNSIGNED_BYTE;
1439 *comps = 2;
1440 return;
1441 case MESA_FORMAT_RGB_UINT8:
1442 *datatype = GL_UNSIGNED_BYTE;
1443 *comps = 3;
1444 return;
1445 case MESA_FORMAT_RGBA_UINT8:
1446 *datatype = GL_UNSIGNED_BYTE;
1447 *comps = 4;
1448 return;
1449 case MESA_FORMAT_R_UINT16:
1450 *datatype = GL_UNSIGNED_SHORT;
1451 *comps = 1;
1452 return;
1453 case MESA_FORMAT_RG_UINT16:
1454 *datatype = GL_UNSIGNED_SHORT;
1455 *comps = 2;
1456 return;
1457 case MESA_FORMAT_RGB_UINT16:
1458 *datatype = GL_UNSIGNED_SHORT;
1459 *comps = 3;
1460 return;
1461 case MESA_FORMAT_RGBA_UINT16:
1462 *datatype = GL_UNSIGNED_SHORT;
1463 *comps = 4;
1464 return;
1465 case MESA_FORMAT_R_UINT32:
1466 *datatype = GL_UNSIGNED_INT;
1467 *comps = 1;
1468 return;
1469 case MESA_FORMAT_RG_UINT32:
1470 *datatype = GL_UNSIGNED_INT;
1471 *comps = 2;
1472 return;
1473 case MESA_FORMAT_RGB_UINT32:
1474 *datatype = GL_UNSIGNED_INT;
1475 *comps = 3;
1476 return;
1477 case MESA_FORMAT_RGBA_UINT32:
1478 *datatype = GL_UNSIGNED_INT;
1479 *comps = 4;
1480 return;
1481
1482 case MESA_FORMAT_R9G9B9E5_FLOAT:
1483 *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
1484 *comps = 3;
1485 return;
1486
1487 case MESA_FORMAT_R11G11B10_FLOAT:
1488 *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
1489 *comps = 3;
1490 return;
1491
1492 case MESA_FORMAT_B10G10R10A2_UINT:
1493 case MESA_FORMAT_R10G10B10A2_UINT:
1494 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1495 *comps = 4;
1496 return;
1497
1498 case MESA_FORMAT_R8G8B8X8_SRGB:
1499 case MESA_FORMAT_X8B8G8R8_SRGB:
1500 case MESA_FORMAT_RGBX_UINT8:
1501 *datatype = GL_UNSIGNED_BYTE;
1502 *comps = 4;
1503 return;
1504
1505 case MESA_FORMAT_R8G8B8X8_SNORM:
1506 case MESA_FORMAT_RGBX_SINT8:
1507 *datatype = GL_BYTE;
1508 *comps = 4;
1509 return;
1510
1511 case MESA_FORMAT_B10G10R10X2_UNORM:
1512 case MESA_FORMAT_R10G10B10X2_UNORM:
1513 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1514 *comps = 4;
1515 return;
1516
1517 case MESA_FORMAT_RGBX_UNORM16:
1518 case MESA_FORMAT_RGBX_UINT16:
1519 *datatype = GL_UNSIGNED_SHORT;
1520 *comps = 4;
1521 return;
1522
1523 case MESA_FORMAT_RGBX_SNORM16:
1524 case MESA_FORMAT_RGBX_SINT16:
1525 *datatype = GL_SHORT;
1526 *comps = 4;
1527 return;
1528
1529 case MESA_FORMAT_RGBX_FLOAT16:
1530 *datatype = GL_HALF_FLOAT;
1531 *comps = 4;
1532 return;
1533
1534 case MESA_FORMAT_RGBX_FLOAT32:
1535 *datatype = GL_FLOAT;
1536 *comps = 4;
1537 return;
1538
1539 case MESA_FORMAT_RGBX_UINT32:
1540 *datatype = GL_UNSIGNED_INT;
1541 *comps = 4;
1542 return;
1543
1544 case MESA_FORMAT_RGBX_SINT32:
1545 *datatype = GL_INT;
1546 *comps = 4;
1547 return;
1548
1549 case MESA_FORMAT_R10G10B10A2_UNORM:
1550 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1551 *comps = 4;
1552 return;
1553
1554 case MESA_FORMAT_G8R8_SNORM:
1555 *datatype = GL_BYTE;
1556 *comps = 2;
1557 return;
1558
1559 case MESA_FORMAT_G16R16_SNORM:
1560 *datatype = GL_SHORT;
1561 *comps = 2;
1562 return;
1563
1564 case MESA_FORMAT_B8G8R8X8_SRGB:
1565 case MESA_FORMAT_X8R8G8B8_SRGB:
1566 *datatype = GL_UNSIGNED_BYTE;
1567 *comps = 4;
1568 return;
1569
1570 case MESA_FORMAT_COUNT:
1571 assert(0);
1572 return;
1573
1574 case MESA_FORMAT_NONE:
1575 /* For debug builds, warn if any formats are not handled */
1576 #ifdef DEBUG
1577 default:
1578 #endif
1579 _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
1580 _mesa_get_format_name(format));
1581 *datatype = 0;
1582 *comps = 1;
1583 }
1584 }
1585
1586 /**
1587 * Check if a mesa_format exactly matches a GL format/type combination
1588 * such that we can use memcpy() from one to the other.
1589 * \param mesa_format a MESA_FORMAT_x value
1590 * \param format the user-specified image format
1591 * \param type the user-specified image datatype
1592 * \param swapBytes typically the current pixel pack/unpack byteswap state
1593 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
1594 */
1595 GLboolean
1596 _mesa_format_matches_format_and_type(mesa_format mesa_format,
1597 GLenum format, GLenum type,
1598 GLboolean swapBytes)
1599 {
1600 const GLboolean littleEndian = _mesa_little_endian();
1601
1602 /* Note: When reading a GL format/type combination, the format lists channel
1603 * assignments from most significant channel in the type to least
1604 * significant. A type with _REV indicates that the assignments are
1605 * swapped, so they are listed from least significant to most significant.
1606 *
1607 * For sanity, please keep this switch statement ordered the same as the
1608 * enums in formats.h.
1609 */
1610
1611 switch (mesa_format) {
1612
1613 case MESA_FORMAT_NONE:
1614 case MESA_FORMAT_COUNT:
1615 return GL_FALSE;
1616
1617 case MESA_FORMAT_A8B8G8R8_UNORM:
1618 case MESA_FORMAT_A8B8G8R8_SRGB:
1619 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
1620 return GL_TRUE;
1621
1622 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
1623 return GL_TRUE;
1624
1625 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
1626 return GL_TRUE;
1627
1628 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV
1629 && !swapBytes)
1630 return GL_TRUE;
1631
1632 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8
1633 && swapBytes)
1634 return GL_TRUE;
1635
1636 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
1637 return GL_TRUE;
1638
1639 return GL_FALSE;
1640
1641 case MESA_FORMAT_R8G8B8A8_UNORM:
1642 case MESA_FORMAT_R8G8B8A8_SRGB:
1643 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1644 !swapBytes)
1645 return GL_TRUE;
1646
1647 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
1648 return GL_TRUE;
1649
1650 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && littleEndian)
1651 return GL_TRUE;
1652
1653 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8 &&
1654 !swapBytes)
1655 return GL_TRUE;
1656
1657 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1658 swapBytes)
1659 return GL_TRUE;
1660
1661 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && !littleEndian)
1662 return GL_TRUE;
1663
1664 return GL_FALSE;
1665
1666 case MESA_FORMAT_B8G8R8A8_UNORM:
1667 case MESA_FORMAT_B8G8R8A8_SRGB:
1668 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1669 !swapBytes)
1670 return GL_TRUE;
1671
1672 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
1673 return GL_TRUE;
1674
1675 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
1676 return GL_TRUE;
1677
1678 return GL_FALSE;
1679
1680 case MESA_FORMAT_A8R8G8B8_UNORM:
1681 case MESA_FORMAT_A8R8G8B8_SRGB:
1682 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
1683 return GL_TRUE;
1684
1685 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1686 swapBytes)
1687 return GL_TRUE;
1688
1689 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
1690 return GL_TRUE;
1691
1692 return GL_FALSE;
1693
1694 case MESA_FORMAT_X8B8G8R8_UNORM:
1695 case MESA_FORMAT_R8G8B8X8_UNORM:
1696 return GL_FALSE;
1697
1698 case MESA_FORMAT_B8G8R8X8_UNORM:
1699 case MESA_FORMAT_X8R8G8B8_UNORM:
1700 return GL_FALSE;
1701
1702 case MESA_FORMAT_BGR_UNORM8:
1703 case MESA_FORMAT_BGR_SRGB8:
1704 return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
1705
1706 case MESA_FORMAT_RGB_UNORM8:
1707 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
1708
1709 case MESA_FORMAT_B5G6R5_UNORM:
1710 return ((format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) ||
1711 (format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
1712 !swapBytes;
1713
1714 case MESA_FORMAT_R5G6B5_UNORM:
1715 return ((format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5) ||
1716 (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
1717 !swapBytes;
1718
1719 case MESA_FORMAT_B4G4R4A4_UNORM:
1720 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
1721 !swapBytes;
1722
1723 case MESA_FORMAT_A4R4G4B4_UNORM:
1724 return GL_FALSE;
1725
1726 case MESA_FORMAT_A1B5G5R5_UNORM:
1727 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
1728 !swapBytes;
1729
1730 case MESA_FORMAT_B5G5R5A1_UNORM:
1731 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
1732 !swapBytes;
1733
1734 case MESA_FORMAT_A1R5G5B5_UNORM:
1735 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
1736 !swapBytes;
1737
1738 case MESA_FORMAT_L4A4_UNORM:
1739 return GL_FALSE;
1740 case MESA_FORMAT_L8A8_UNORM:
1741 case MESA_FORMAT_L8A8_SRGB:
1742 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
1743 case MESA_FORMAT_A8L8_UNORM:
1744 case MESA_FORMAT_A8L8_SRGB:
1745 return GL_FALSE;
1746
1747 case MESA_FORMAT_L16A16_UNORM:
1748 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian && !swapBytes;
1749 case MESA_FORMAT_A16L16_UNORM:
1750 return GL_FALSE;
1751
1752 case MESA_FORMAT_B2G3R3_UNORM:
1753 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
1754
1755 case MESA_FORMAT_R3G3B2_UNORM:
1756 return format == GL_RGB && type == GL_UNSIGNED_BYTE_2_3_3_REV;
1757
1758 case MESA_FORMAT_A4B4G4R4_UNORM:
1759 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
1760 return GL_TRUE;
1761
1762 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
1763 return GL_TRUE;
1764
1765 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
1766 return GL_TRUE;
1767
1768 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
1769 return GL_TRUE;
1770
1771 return GL_FALSE;
1772
1773 case MESA_FORMAT_R4G4B4A4_UNORM:
1774 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
1775 return GL_TRUE;
1776
1777 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
1778 return GL_TRUE;
1779
1780 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
1781 return GL_TRUE;
1782
1783 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
1784 return GL_TRUE;
1785
1786 return GL_FALSE;
1787
1788 case MESA_FORMAT_R5G5B5A1_UNORM:
1789 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
1790
1791 case MESA_FORMAT_A2B10G10R10_UNORM:
1792 return format == GL_RGBA && type == GL_UNSIGNED_INT_10_10_10_2;
1793
1794 case MESA_FORMAT_A2B10G10R10_UINT:
1795 return format == GL_RGBA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
1796
1797 case MESA_FORMAT_A2R10G10B10_UNORM:
1798 return format == GL_BGRA && type == GL_UNSIGNED_INT_10_10_10_2;
1799
1800 case MESA_FORMAT_A2R10G10B10_UINT:
1801 return format == GL_BGRA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
1802
1803 case MESA_FORMAT_A_UNORM8:
1804 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
1805 case MESA_FORMAT_A_UNORM16:
1806 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && !swapBytes;
1807 case MESA_FORMAT_L_UNORM8:
1808 case MESA_FORMAT_L_SRGB8:
1809 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
1810 case MESA_FORMAT_L_UNORM16:
1811 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && !swapBytes;
1812 case MESA_FORMAT_I_UNORM8:
1813 return format == GL_RED && type == GL_UNSIGNED_BYTE;
1814 case MESA_FORMAT_I_UNORM16:
1815 return format == GL_RED && type == GL_UNSIGNED_SHORT && !swapBytes;
1816
1817 case MESA_FORMAT_YCBCR:
1818 return format == GL_YCBCR_MESA &&
1819 ((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian != swapBytes) ||
1820 (type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian == swapBytes));
1821 case MESA_FORMAT_YCBCR_REV:
1822 return format == GL_YCBCR_MESA &&
1823 ((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian == swapBytes) ||
1824 (type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian != swapBytes));
1825
1826 case MESA_FORMAT_R_UNORM8:
1827 return format == GL_RED && type == GL_UNSIGNED_BYTE;
1828 case MESA_FORMAT_R8G8_UNORM:
1829 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
1830 case MESA_FORMAT_G8R8_UNORM:
1831 return GL_FALSE;
1832
1833 case MESA_FORMAT_R_UNORM16:
1834 return format == GL_RED && type == GL_UNSIGNED_SHORT &&
1835 !swapBytes;
1836 case MESA_FORMAT_R16G16_UNORM:
1837 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian &&
1838 !swapBytes;
1839 case MESA_FORMAT_G16R16_UNORM:
1840 return GL_FALSE;
1841
1842 case MESA_FORMAT_B10G10R10A2_UNORM:
1843 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
1844 !swapBytes;
1845
1846 case MESA_FORMAT_S8_UINT_Z24_UNORM:
1847 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8 &&
1848 !swapBytes;
1849 case MESA_FORMAT_X8_UINT_Z24_UNORM:
1850 case MESA_FORMAT_Z24_UNORM_S8_UINT:
1851 return GL_FALSE;
1852
1853 case MESA_FORMAT_Z_UNORM16:
1854 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT &&
1855 !swapBytes;
1856
1857 case MESA_FORMAT_Z24_UNORM_X8_UINT:
1858 return GL_FALSE;
1859
1860 case MESA_FORMAT_Z_UNORM32:
1861 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT &&
1862 !swapBytes;
1863
1864 case MESA_FORMAT_S_UINT8:
1865 return format == GL_STENCIL_INDEX && type == GL_UNSIGNED_BYTE;
1866
1867 case MESA_FORMAT_SRGB_DXT1:
1868 case MESA_FORMAT_SRGBA_DXT1:
1869 case MESA_FORMAT_SRGBA_DXT3:
1870 case MESA_FORMAT_SRGBA_DXT5:
1871 return GL_FALSE;
1872
1873 case MESA_FORMAT_RGB_FXT1:
1874 case MESA_FORMAT_RGBA_FXT1:
1875 case MESA_FORMAT_RGB_DXT1:
1876 case MESA_FORMAT_RGBA_DXT1:
1877 case MESA_FORMAT_RGBA_DXT3:
1878 case MESA_FORMAT_RGBA_DXT5:
1879 return GL_FALSE;
1880
1881 case MESA_FORMAT_BPTC_RGBA_UNORM:
1882 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
1883 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
1884 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
1885 return GL_FALSE;
1886
1887 case MESA_FORMAT_RGBA_FLOAT32:
1888 return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
1889 case MESA_FORMAT_RGBA_FLOAT16:
1890 return format == GL_RGBA && type == GL_HALF_FLOAT && !swapBytes;
1891
1892 case MESA_FORMAT_RGB_FLOAT32:
1893 return format == GL_RGB && type == GL_FLOAT && !swapBytes;
1894 case MESA_FORMAT_RGB_FLOAT16:
1895 return format == GL_RGB && type == GL_HALF_FLOAT && !swapBytes;
1896
1897 case MESA_FORMAT_A_FLOAT32:
1898 return format == GL_ALPHA && type == GL_FLOAT && !swapBytes;
1899 case MESA_FORMAT_A_FLOAT16:
1900 return format == GL_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
1901
1902 case MESA_FORMAT_L_FLOAT32:
1903 return format == GL_LUMINANCE && type == GL_FLOAT && !swapBytes;
1904 case MESA_FORMAT_L_FLOAT16:
1905 return format == GL_LUMINANCE && type == GL_HALF_FLOAT && !swapBytes;
1906
1907 case MESA_FORMAT_LA_FLOAT32:
1908 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT && !swapBytes;
1909 case MESA_FORMAT_LA_FLOAT16:
1910 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
1911
1912 case MESA_FORMAT_I_FLOAT32:
1913 return format == GL_RED && type == GL_FLOAT && !swapBytes;
1914 case MESA_FORMAT_I_FLOAT16:
1915 return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
1916
1917 case MESA_FORMAT_R_FLOAT32:
1918 return format == GL_RED && type == GL_FLOAT && !swapBytes;
1919 case MESA_FORMAT_R_FLOAT16:
1920 return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
1921
1922 case MESA_FORMAT_RG_FLOAT32:
1923 return format == GL_RG && type == GL_FLOAT && !swapBytes;
1924 case MESA_FORMAT_RG_FLOAT16:
1925 return format == GL_RG && type == GL_HALF_FLOAT && !swapBytes;
1926
1927 case MESA_FORMAT_A_UINT8:
1928 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_BYTE;
1929 case MESA_FORMAT_A_UINT16:
1930 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_SHORT &&
1931 !swapBytes;
1932 case MESA_FORMAT_A_UINT32:
1933 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_INT &&
1934 !swapBytes;
1935 case MESA_FORMAT_A_SINT8:
1936 return format == GL_ALPHA_INTEGER && type == GL_BYTE;
1937 case MESA_FORMAT_A_SINT16:
1938 return format == GL_ALPHA_INTEGER && type == GL_SHORT && !swapBytes;
1939 case MESA_FORMAT_A_SINT32:
1940 return format == GL_ALPHA_INTEGER && type == GL_INT && !swapBytes;
1941
1942 case MESA_FORMAT_I_UINT8:
1943 return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
1944 case MESA_FORMAT_I_UINT16:
1945 return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
1946 case MESA_FORMAT_I_UINT32:
1947 return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1948 case MESA_FORMAT_I_SINT8:
1949 return format == GL_RED_INTEGER && type == GL_BYTE;
1950 case MESA_FORMAT_I_SINT16:
1951 return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
1952 case MESA_FORMAT_I_SINT32:
1953 return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
1954
1955 case MESA_FORMAT_L_UINT8:
1956 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_BYTE;
1957 case MESA_FORMAT_L_UINT16:
1958 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_SHORT &&
1959 !swapBytes;
1960 case MESA_FORMAT_L_UINT32:
1961 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_INT &&
1962 !swapBytes;
1963 case MESA_FORMAT_L_SINT8:
1964 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_BYTE;
1965 case MESA_FORMAT_L_SINT16:
1966 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_SHORT &&
1967 !swapBytes;
1968 case MESA_FORMAT_L_SINT32:
1969 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_INT && !swapBytes;
1970
1971 case MESA_FORMAT_LA_UINT8:
1972 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1973 type == GL_UNSIGNED_BYTE && !swapBytes;
1974 case MESA_FORMAT_LA_UINT16:
1975 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1976 type == GL_UNSIGNED_SHORT && !swapBytes;
1977 case MESA_FORMAT_LA_UINT32:
1978 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1979 type == GL_UNSIGNED_INT && !swapBytes;
1980 case MESA_FORMAT_LA_SINT8:
1981 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_BYTE &&
1982 !swapBytes;
1983 case MESA_FORMAT_LA_SINT16:
1984 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_SHORT &&
1985 !swapBytes;
1986 case MESA_FORMAT_LA_SINT32:
1987 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_INT &&
1988 !swapBytes;
1989
1990 case MESA_FORMAT_R_SINT8:
1991 return format == GL_RED_INTEGER && type == GL_BYTE;
1992 case MESA_FORMAT_RG_SINT8:
1993 return format == GL_RG_INTEGER && type == GL_BYTE && !swapBytes;
1994 case MESA_FORMAT_RGB_SINT8:
1995 return format == GL_RGB_INTEGER && type == GL_BYTE && !swapBytes;
1996 case MESA_FORMAT_RGBA_SINT8:
1997 return format == GL_RGBA_INTEGER && type == GL_BYTE && !swapBytes;
1998 case MESA_FORMAT_R_SINT16:
1999 return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
2000 case MESA_FORMAT_RG_SINT16:
2001 return format == GL_RG_INTEGER && type == GL_SHORT && !swapBytes;
2002 case MESA_FORMAT_RGB_SINT16:
2003 return format == GL_RGB_INTEGER && type == GL_SHORT && !swapBytes;
2004 case MESA_FORMAT_RGBA_SINT16:
2005 return format == GL_RGBA_INTEGER && type == GL_SHORT && !swapBytes;
2006 case MESA_FORMAT_R_SINT32:
2007 return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
2008 case MESA_FORMAT_RG_SINT32:
2009 return format == GL_RG_INTEGER && type == GL_INT && !swapBytes;
2010 case MESA_FORMAT_RGB_SINT32:
2011 return format == GL_RGB_INTEGER && type == GL_INT && !swapBytes;
2012 case MESA_FORMAT_RGBA_SINT32:
2013 return format == GL_RGBA_INTEGER && type == GL_INT && !swapBytes;
2014
2015 case MESA_FORMAT_R_UINT8:
2016 return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
2017 case MESA_FORMAT_RG_UINT8:
2018 return format == GL_RG_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
2019 case MESA_FORMAT_RGB_UINT8:
2020 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
2021 case MESA_FORMAT_RGBA_UINT8:
2022 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_BYTE &&
2023 !swapBytes;
2024 case MESA_FORMAT_R_UINT16:
2025 return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT &&
2026 !swapBytes;
2027 case MESA_FORMAT_RG_UINT16:
2028 return format == GL_RG_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
2029 case MESA_FORMAT_RGB_UINT16:
2030 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT &&
2031 !swapBytes;
2032 case MESA_FORMAT_RGBA_UINT16:
2033 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT &&
2034 !swapBytes;
2035 case MESA_FORMAT_R_UINT32:
2036 return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
2037 case MESA_FORMAT_RG_UINT32:
2038 return format == GL_RG_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
2039 case MESA_FORMAT_RGB_UINT32:
2040 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
2041 case MESA_FORMAT_RGBA_UINT32:
2042 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
2043
2044 case MESA_FORMAT_R_SNORM8:
2045 return format == GL_RED && type == GL_BYTE;
2046 case MESA_FORMAT_R8G8_SNORM:
2047 return format == GL_RG && type == GL_BYTE && littleEndian &&
2048 !swapBytes;
2049 case MESA_FORMAT_X8B8G8R8_SNORM:
2050 return GL_FALSE;
2051
2052 case MESA_FORMAT_A8B8G8R8_SNORM:
2053 if (format == GL_RGBA && type == GL_BYTE && !littleEndian)
2054 return GL_TRUE;
2055
2056 if (format == GL_ABGR_EXT && type == GL_BYTE && littleEndian)
2057 return GL_TRUE;
2058
2059 return GL_FALSE;
2060
2061 case MESA_FORMAT_R8G8B8A8_SNORM:
2062 if (format == GL_RGBA && type == GL_BYTE && littleEndian)
2063 return GL_TRUE;
2064
2065 if (format == GL_ABGR_EXT && type == GL_BYTE && !littleEndian)
2066 return GL_TRUE;
2067
2068 return GL_FALSE;
2069
2070 case MESA_FORMAT_R_SNORM16:
2071 return format == GL_RED && type == GL_SHORT &&
2072 !swapBytes;
2073 case MESA_FORMAT_R16G16_SNORM:
2074 return format == GL_RG && type == GL_SHORT && littleEndian && !swapBytes;
2075 case MESA_FORMAT_RGB_SNORM16:
2076 return format == GL_RGB && type == GL_SHORT && !swapBytes;
2077 case MESA_FORMAT_RGBA_SNORM16:
2078 return format == GL_RGBA && type == GL_SHORT && !swapBytes;
2079 case MESA_FORMAT_RGBA_UNORM16:
2080 return format == GL_RGBA && type == GL_UNSIGNED_SHORT &&
2081 !swapBytes;
2082
2083 case MESA_FORMAT_R_RGTC1_UNORM:
2084 case MESA_FORMAT_R_RGTC1_SNORM:
2085 case MESA_FORMAT_RG_RGTC2_UNORM:
2086 case MESA_FORMAT_RG_RGTC2_SNORM:
2087 return GL_FALSE;
2088
2089 case MESA_FORMAT_L_LATC1_UNORM:
2090 case MESA_FORMAT_L_LATC1_SNORM:
2091 case MESA_FORMAT_LA_LATC2_UNORM:
2092 case MESA_FORMAT_LA_LATC2_SNORM:
2093 return GL_FALSE;
2094
2095 case MESA_FORMAT_ETC1_RGB8:
2096 case MESA_FORMAT_ETC2_RGB8:
2097 case MESA_FORMAT_ETC2_SRGB8:
2098 case MESA_FORMAT_ETC2_RGBA8_EAC:
2099 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
2100 case MESA_FORMAT_ETC2_R11_EAC:
2101 case MESA_FORMAT_ETC2_RG11_EAC:
2102 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
2103 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
2104 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
2105 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
2106 return GL_FALSE;
2107
2108 case MESA_FORMAT_A_SNORM8:
2109 return format == GL_ALPHA && type == GL_BYTE;
2110 case MESA_FORMAT_L_SNORM8:
2111 return format == GL_LUMINANCE && type == GL_BYTE;
2112 case MESA_FORMAT_L8A8_SNORM:
2113 return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
2114 littleEndian && !swapBytes;
2115 case MESA_FORMAT_A8L8_SNORM:
2116 return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
2117 !littleEndian && !swapBytes;
2118 case MESA_FORMAT_I_SNORM8:
2119 return format == GL_RED && type == GL_BYTE;
2120 case MESA_FORMAT_A_SNORM16:
2121 return format == GL_ALPHA && type == GL_SHORT && !swapBytes;
2122 case MESA_FORMAT_L_SNORM16:
2123 return format == GL_LUMINANCE && type == GL_SHORT && !swapBytes;
2124 case MESA_FORMAT_LA_SNORM16:
2125 return format == GL_LUMINANCE_ALPHA && type == GL_SHORT &&
2126 littleEndian && !swapBytes;
2127 case MESA_FORMAT_I_SNORM16:
2128 return format == GL_RED && type == GL_SHORT && littleEndian &&
2129 !swapBytes;
2130
2131 case MESA_FORMAT_B10G10R10A2_UINT:
2132 return (format == GL_BGRA_INTEGER_EXT &&
2133 type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2134 !swapBytes);
2135
2136 case MESA_FORMAT_R10G10B10A2_UINT:
2137 return (format == GL_RGBA_INTEGER_EXT &&
2138 type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2139 !swapBytes);
2140
2141 case MESA_FORMAT_R9G9B9E5_FLOAT:
2142 return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV &&
2143 !swapBytes;
2144
2145 case MESA_FORMAT_R11G11B10_FLOAT:
2146 return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV &&
2147 !swapBytes;
2148
2149 case MESA_FORMAT_Z_FLOAT32:
2150 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT && !swapBytes;
2151
2152 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
2153 return format == GL_DEPTH_STENCIL &&
2154 type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV && !swapBytes;
2155
2156 case MESA_FORMAT_B4G4R4X4_UNORM:
2157 case MESA_FORMAT_B5G5R5X1_UNORM:
2158 case MESA_FORMAT_R8G8B8X8_SNORM:
2159 case MESA_FORMAT_R8G8B8X8_SRGB:
2160 case MESA_FORMAT_X8B8G8R8_SRGB:
2161 case MESA_FORMAT_RGBX_UINT8:
2162 case MESA_FORMAT_RGBX_SINT8:
2163 case MESA_FORMAT_B10G10R10X2_UNORM:
2164 case MESA_FORMAT_R10G10B10X2_UNORM:
2165 case MESA_FORMAT_RGBX_UNORM16:
2166 case MESA_FORMAT_RGBX_SNORM16:
2167 case MESA_FORMAT_RGBX_FLOAT16:
2168 case MESA_FORMAT_RGBX_UINT16:
2169 case MESA_FORMAT_RGBX_SINT16:
2170 case MESA_FORMAT_RGBX_FLOAT32:
2171 case MESA_FORMAT_RGBX_UINT32:
2172 case MESA_FORMAT_RGBX_SINT32:
2173 return GL_FALSE;
2174
2175 case MESA_FORMAT_R10G10B10A2_UNORM:
2176 return format == GL_RGBA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2177 !swapBytes;
2178
2179 case MESA_FORMAT_G8R8_SNORM:
2180 return format == GL_RG && type == GL_BYTE && !littleEndian &&
2181 !swapBytes;
2182
2183 case MESA_FORMAT_G16R16_SNORM:
2184 return format == GL_RG && type == GL_SHORT && !littleEndian &&
2185 !swapBytes;
2186
2187 case MESA_FORMAT_B8G8R8X8_SRGB:
2188 case MESA_FORMAT_X8R8G8B8_SRGB:
2189 return GL_FALSE;
2190 }
2191
2192 return GL_FALSE;
2193 }
2194