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 bool IsSRGBFormat;
69
70 /**
71 * To describe compressed formats. If not compressed, Width=Height=Depth=1.
72 */
73 GLubyte BlockWidth, BlockHeight, BlockDepth;
74 GLubyte BytesPerBlock;
75
76 uint8_t Swizzle[4];
77 mesa_array_format ArrayFormat;
78 };
79
80 #include "format_info.h"
81
82 static const struct gl_format_info *
_mesa_get_format_info(mesa_format format)83 _mesa_get_format_info(mesa_format format)
84 {
85 const struct gl_format_info *info = &format_info[format];
86 STATIC_ASSERT(ARRAY_SIZE(format_info) == MESA_FORMAT_COUNT);
87 assert(info->Name == format);
88 return info;
89 }
90
91
92 /** Return string name of format (for debugging) */
93 const char *
_mesa_get_format_name(mesa_format format)94 _mesa_get_format_name(mesa_format format)
95 {
96 const struct gl_format_info *info = _mesa_get_format_info(format);
97 return info->StrName;
98 }
99
100
101
102 /**
103 * Return bytes needed to store a block of pixels in the given format.
104 * Normally, a block is 1x1 (a single pixel). But for compressed formats
105 * a block may be 4x4 or 8x4, etc.
106 *
107 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
108 */
109 GLint
_mesa_get_format_bytes(mesa_format format)110 _mesa_get_format_bytes(mesa_format format)
111 {
112 const struct gl_format_info *info = _mesa_get_format_info(format);
113 assert(info->BytesPerBlock);
114 assert(info->BytesPerBlock <= MAX_PIXEL_BYTES ||
115 _mesa_is_format_compressed(format));
116 return info->BytesPerBlock;
117 }
118
119
120 /**
121 * Return bits per component for the given format.
122 * \param format one of MESA_FORMAT_x
123 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
124 */
125 GLint
_mesa_get_format_bits(mesa_format format,GLenum pname)126 _mesa_get_format_bits(mesa_format format, GLenum pname)
127 {
128 const struct gl_format_info *info = _mesa_get_format_info(format);
129
130 switch (pname) {
131 case GL_RED_BITS:
132 case GL_TEXTURE_RED_SIZE:
133 case GL_RENDERBUFFER_RED_SIZE_EXT:
134 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
135 case GL_INTERNALFORMAT_RED_SIZE:
136 return info->RedBits;
137 case GL_GREEN_BITS:
138 case GL_TEXTURE_GREEN_SIZE:
139 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
140 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
141 case GL_INTERNALFORMAT_GREEN_SIZE:
142 return info->GreenBits;
143 case GL_BLUE_BITS:
144 case GL_TEXTURE_BLUE_SIZE:
145 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
146 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
147 case GL_INTERNALFORMAT_BLUE_SIZE:
148 return info->BlueBits;
149 case GL_ALPHA_BITS:
150 case GL_TEXTURE_ALPHA_SIZE:
151 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
152 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
153 case GL_INTERNALFORMAT_ALPHA_SIZE:
154 return info->AlphaBits;
155 case GL_TEXTURE_INTENSITY_SIZE:
156 return info->IntensityBits;
157 case GL_TEXTURE_LUMINANCE_SIZE:
158 return info->LuminanceBits;
159 case GL_INDEX_BITS:
160 return 0;
161 case GL_DEPTH_BITS:
162 case GL_TEXTURE_DEPTH_SIZE_ARB:
163 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
164 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
165 case GL_INTERNALFORMAT_DEPTH_SIZE:
166 return info->DepthBits;
167 case GL_STENCIL_BITS:
168 case GL_TEXTURE_STENCIL_SIZE_EXT:
169 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
170 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
171 case GL_INTERNALFORMAT_STENCIL_SIZE:
172 return info->StencilBits;
173 default:
174 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
175 return 0;
176 }
177 }
178
179
180 GLuint
_mesa_get_format_max_bits(mesa_format format)181 _mesa_get_format_max_bits(mesa_format format)
182 {
183 const struct gl_format_info *info = _mesa_get_format_info(format);
184 GLuint max = MAX2(info->RedBits, info->GreenBits);
185 max = MAX2(max, info->BlueBits);
186 max = MAX2(max, info->AlphaBits);
187 max = MAX2(max, info->LuminanceBits);
188 max = MAX2(max, info->IntensityBits);
189 max = MAX2(max, info->DepthBits);
190 max = MAX2(max, info->StencilBits);
191 return max;
192 }
193
194
195 /**
196 * Return the layout type of the given format.
197 */
198 extern enum mesa_format_layout
_mesa_get_format_layout(mesa_format format)199 _mesa_get_format_layout(mesa_format format)
200 {
201 const struct gl_format_info *info = _mesa_get_format_info(format);
202 return info->Layout;
203 }
204
205
206 /**
207 * Return the data type (or more specifically, the data representation)
208 * for the given format.
209 * The return value will be one of:
210 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
211 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
212 * GL_UNSIGNED_INT = an ordinary unsigned integer
213 * GL_INT = an ordinary signed integer
214 * GL_FLOAT = an ordinary float
215 */
216 GLenum
_mesa_get_format_datatype(mesa_format format)217 _mesa_get_format_datatype(mesa_format format)
218 {
219 const struct gl_format_info *info = _mesa_get_format_info(format);
220 return info->DataType;
221 }
222
223 static GLenum
get_base_format_for_array_format(mesa_array_format format)224 get_base_format_for_array_format(mesa_array_format format)
225 {
226 uint8_t swizzle[4];
227 int num_channels;
228
229 _mesa_array_format_get_swizzle(format, swizzle);
230 num_channels = _mesa_array_format_get_num_channels(format);
231
232 switch (num_channels) {
233 case 4:
234 /* FIXME: RGBX formats have 4 channels, but their base format is GL_RGB.
235 * This is not really a problem for now because we only create array
236 * formats from GL format/type combinations, and these cannot specify
237 * RGBX formats.
238 */
239 return GL_RGBA;
240 case 3:
241 return GL_RGB;
242 case 2:
243 if (swizzle[0] == 0 &&
244 swizzle[1] == 0 &&
245 swizzle[2] == 0 &&
246 swizzle[3] == 1)
247 return GL_LUMINANCE_ALPHA;
248 if (swizzle[0] == 1 &&
249 swizzle[1] == 1 &&
250 swizzle[2] == 1 &&
251 swizzle[3] == 0)
252 return GL_LUMINANCE_ALPHA;
253 if (swizzle[0] == 0 &&
254 swizzle[1] == 1 &&
255 swizzle[2] == 4 &&
256 swizzle[3] == 5)
257 return GL_RG;
258 if (swizzle[0] == 1 &&
259 swizzle[1] == 0 &&
260 swizzle[2] == 4 &&
261 swizzle[3] == 5)
262 return GL_RG;
263 break;
264 case 1:
265 if (swizzle[0] == 0 &&
266 swizzle[1] == 0 &&
267 swizzle[2] == 0 &&
268 swizzle[3] == 5)
269 return GL_LUMINANCE;
270 if (swizzle[0] == 0 &&
271 swizzle[1] == 0 &&
272 swizzle[2] == 0 &&
273 swizzle[3] == 0)
274 return GL_INTENSITY;
275 if (swizzle[0] <= MESA_FORMAT_SWIZZLE_W)
276 return GL_RED;
277 if (swizzle[1] <= MESA_FORMAT_SWIZZLE_W)
278 return GL_GREEN;
279 if (swizzle[2] <= MESA_FORMAT_SWIZZLE_W)
280 return GL_BLUE;
281 if (swizzle[3] <= MESA_FORMAT_SWIZZLE_W)
282 return GL_ALPHA;
283 break;
284 }
285
286 unreachable("Unsupported format");
287 }
288
289 /**
290 * Return the basic format for the given type. The result will be one of
291 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
292 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
293 * This functions accepts a mesa_format or a mesa_array_format.
294 */
295 GLenum
_mesa_get_format_base_format(uint32_t format)296 _mesa_get_format_base_format(uint32_t format)
297 {
298 if (!_mesa_format_is_mesa_array_format(format)) {
299 const struct gl_format_info *info = _mesa_get_format_info(format);
300 return info->BaseFormat;
301 } else {
302 return get_base_format_for_array_format(format);
303 }
304 }
305
306
307 /**
308 * Return the block size (in pixels) for the given format. Normally
309 * the block size is 1x1. But compressed formats will have block sizes
310 * of 4x4 or 8x4 pixels, etc.
311 * \param bw returns block width in pixels
312 * \param bh returns block height in pixels
313 */
314 void
_mesa_get_format_block_size(mesa_format format,GLuint * bw,GLuint * bh)315 _mesa_get_format_block_size(mesa_format format, GLuint *bw, GLuint *bh)
316 {
317 const struct gl_format_info *info = _mesa_get_format_info(format);
318 /* Use _mesa_get_format_block_size_3d() for 3D blocks. */
319 assert(info->BlockDepth == 1);
320
321 *bw = info->BlockWidth;
322 *bh = info->BlockHeight;
323 }
324
325
326 /**
327 * Return the block size (in pixels) for the given format. Normally
328 * the block size is 1x1x1. But compressed formats will have block
329 * sizes of 4x4x4, 3x3x3 pixels, etc.
330 * \param bw returns block width in pixels
331 * \param bh returns block height in pixels
332 * \param bd returns block depth in pixels
333 */
334 void
_mesa_get_format_block_size_3d(mesa_format format,GLuint * bw,GLuint * bh,GLuint * bd)335 _mesa_get_format_block_size_3d(mesa_format format,
336 GLuint *bw,
337 GLuint *bh,
338 GLuint *bd)
339 {
340 const struct gl_format_info *info = _mesa_get_format_info(format);
341 *bw = info->BlockWidth;
342 *bh = info->BlockHeight;
343 *bd = info->BlockDepth;
344 }
345
346
347 /**
348 * Returns the an array of four numbers representing the transformation
349 * from the RGBA or SZ colorspace to the given format. For array formats,
350 * the i'th RGBA component is given by:
351 *
352 * if (swizzle[i] <= MESA_FORMAT_SWIZZLE_W)
353 * comp = data[swizzle[i]];
354 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ZERO)
355 * comp = 0;
356 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ONE)
357 * comp = 1;
358 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_NONE)
359 * // data does not contain a channel of this format
360 *
361 * For packed formats, the swizzle gives the number of components left of
362 * the least significant bit.
363 *
364 * Compressed formats have no swizzle.
365 */
366 void
_mesa_get_format_swizzle(mesa_format format,uint8_t swizzle_out[4])367 _mesa_get_format_swizzle(mesa_format format, uint8_t swizzle_out[4])
368 {
369 const struct gl_format_info *info = _mesa_get_format_info(format);
370 memcpy(swizzle_out, info->Swizzle, sizeof(info->Swizzle));
371 }
372
373 mesa_array_format
_mesa_array_format_flip_channels(mesa_array_format format)374 _mesa_array_format_flip_channels(mesa_array_format format)
375 {
376 int num_channels;
377 uint8_t swizzle[4];
378
379 num_channels = _mesa_array_format_get_num_channels(format);
380 _mesa_array_format_get_swizzle(format, swizzle);
381
382 if (num_channels == 1)
383 return format;
384
385 if (num_channels == 2) {
386 /* Assert that the swizzle makes sense for 2 channels */
387 for (unsigned i = 0; i < 4; i++)
388 assert(swizzle[i] != 2 && swizzle[i] != 3);
389
390 static const uint8_t flip_xy[6] = { 1, 0, 2, 3, 4, 5 };
391 _mesa_array_format_set_swizzle(&format,
392 flip_xy[swizzle[0]], flip_xy[swizzle[1]],
393 flip_xy[swizzle[2]], flip_xy[swizzle[3]]);
394 return format;
395 }
396
397 if (num_channels == 4) {
398 static const uint8_t flip[6] = { 3, 2, 1, 0, 4, 5 };
399 _mesa_array_format_set_swizzle(&format,
400 flip[swizzle[0]], flip[swizzle[1]],
401 flip[swizzle[2]], flip[swizzle[3]]);
402 return format;
403 }
404
405 unreachable("Invalid array format");
406 }
407
408 uint32_t
_mesa_format_to_array_format(mesa_format format)409 _mesa_format_to_array_format(mesa_format format)
410 {
411 const struct gl_format_info *info = _mesa_get_format_info(format);
412 if (info->ArrayFormat && !_mesa_little_endian() &&
413 info->Layout == MESA_FORMAT_LAYOUT_PACKED)
414 return _mesa_array_format_flip_channels(info->ArrayFormat);
415 else
416 return info->ArrayFormat;
417 }
418
419 static struct hash_table *format_array_format_table;
420 static once_flag format_array_format_table_exists = ONCE_FLAG_INIT;
421
422 static bool
array_formats_equal(const void * a,const void * b)423 array_formats_equal(const void *a, const void *b)
424 {
425 return (intptr_t)a == (intptr_t)b;
426 }
427
428 static void
format_array_format_table_init(void)429 format_array_format_table_init(void)
430 {
431 const struct gl_format_info *info;
432 mesa_array_format array_format;
433 unsigned f;
434
435 format_array_format_table = _mesa_hash_table_create(NULL, NULL,
436 array_formats_equal);
437
438 if (!format_array_format_table) {
439 _mesa_error_no_memory(__func__);
440 return;
441 }
442
443 for (f = 1; f < MESA_FORMAT_COUNT; ++f) {
444 info = _mesa_get_format_info(f);
445 if (!info->ArrayFormat)
446 continue;
447
448 if (_mesa_little_endian()) {
449 array_format = info->ArrayFormat;
450 } else {
451 array_format = _mesa_array_format_flip_channels(info->ArrayFormat);
452 }
453
454 /* This can happen and does for some of the BGR formats. Let's take
455 * the first one in the list.
456 */
457 if (_mesa_hash_table_search_pre_hashed(format_array_format_table,
458 array_format,
459 (void *)(intptr_t)array_format))
460 continue;
461
462 _mesa_hash_table_insert_pre_hashed(format_array_format_table,
463 array_format,
464 (void *)(intptr_t)array_format,
465 (void *)(intptr_t)f);
466 }
467 }
468
469 mesa_format
_mesa_format_from_array_format(uint32_t array_format)470 _mesa_format_from_array_format(uint32_t array_format)
471 {
472 struct hash_entry *entry;
473
474 assert(_mesa_format_is_mesa_array_format(array_format));
475
476 call_once(&format_array_format_table_exists, format_array_format_table_init);
477
478 if (!format_array_format_table) {
479 static const once_flag once_flag_init = ONCE_FLAG_INIT;
480 format_array_format_table_exists = once_flag_init;
481 return MESA_FORMAT_NONE;
482 }
483
484 entry = _mesa_hash_table_search_pre_hashed(format_array_format_table,
485 array_format,
486 (void *)(intptr_t)array_format);
487 if (entry)
488 return (intptr_t)entry->data;
489 else
490 return MESA_FORMAT_NONE;
491 }
492
493 /** Is the given format a compressed format? */
494 GLboolean
_mesa_is_format_compressed(mesa_format format)495 _mesa_is_format_compressed(mesa_format format)
496 {
497 const struct gl_format_info *info = _mesa_get_format_info(format);
498 return info->BlockWidth > 1 || info->BlockHeight > 1;
499 }
500
501
502 /**
503 * Determine if the given format represents a packed depth/stencil buffer.
504 */
505 GLboolean
_mesa_is_format_packed_depth_stencil(mesa_format format)506 _mesa_is_format_packed_depth_stencil(mesa_format format)
507 {
508 const struct gl_format_info *info = _mesa_get_format_info(format);
509
510 return info->BaseFormat == GL_DEPTH_STENCIL;
511 }
512
513
514 /**
515 * Is the given format a signed/unsigned integer color format?
516 */
517 GLboolean
_mesa_is_format_integer_color(mesa_format format)518 _mesa_is_format_integer_color(mesa_format format)
519 {
520 const struct gl_format_info *info = _mesa_get_format_info(format);
521 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
522 info->BaseFormat != GL_DEPTH_COMPONENT &&
523 info->BaseFormat != GL_DEPTH_STENCIL &&
524 info->BaseFormat != GL_STENCIL_INDEX;
525 }
526
527
528 /**
529 * Is the given format an unsigned integer format?
530 */
531 GLboolean
_mesa_is_format_unsigned(mesa_format format)532 _mesa_is_format_unsigned(mesa_format format)
533 {
534 const struct gl_format_info *info = _mesa_get_format_info(format);
535 return _mesa_is_type_unsigned(info->DataType);
536 }
537
538
539 /**
540 * Does the given format store signed values?
541 */
542 GLboolean
_mesa_is_format_signed(mesa_format format)543 _mesa_is_format_signed(mesa_format format)
544 {
545 if (format == MESA_FORMAT_R11G11B10_FLOAT ||
546 format == MESA_FORMAT_R9G9B9E5_FLOAT) {
547 /* these packed float formats only store unsigned values */
548 return GL_FALSE;
549 }
550 else {
551 const struct gl_format_info *info = _mesa_get_format_info(format);
552 return (info->DataType == GL_SIGNED_NORMALIZED ||
553 info->DataType == GL_INT ||
554 info->DataType == GL_FLOAT);
555 }
556 }
557
558 /**
559 * Is the given format an integer format?
560 */
561 GLboolean
_mesa_is_format_integer(mesa_format format)562 _mesa_is_format_integer(mesa_format format)
563 {
564 const struct gl_format_info *info = _mesa_get_format_info(format);
565 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT);
566 }
567
568
569 /**
570 * Return true if the given format is a color format.
571 */
572 GLenum
_mesa_is_format_color_format(mesa_format format)573 _mesa_is_format_color_format(mesa_format format)
574 {
575 const struct gl_format_info *info = _mesa_get_format_info(format);
576 switch (info->BaseFormat) {
577 case GL_DEPTH_COMPONENT:
578 case GL_STENCIL_INDEX:
579 case GL_DEPTH_STENCIL:
580 return false;
581 default:
582 return true;
583 }
584 }
585
586
587 /**
588 * Return color encoding for given format.
589 * \return GL_LINEAR or GL_SRGB
590 */
591 GLenum
_mesa_get_format_color_encoding(mesa_format format)592 _mesa_get_format_color_encoding(mesa_format format)
593 {
594 const struct gl_format_info *info = _mesa_get_format_info(format);
595 return info->IsSRGBFormat ? GL_SRGB : GL_LINEAR;
596 }
597
598
599 /**
600 * Return TRUE if format is an ETC2 compressed format specified
601 * by GL_ARB_ES3_compatibility.
602 */
603 bool
_mesa_is_format_etc2(mesa_format format)604 _mesa_is_format_etc2(mesa_format format)
605 {
606 switch (format) {
607 case MESA_FORMAT_ETC2_RGB8:
608 case MESA_FORMAT_ETC2_SRGB8:
609 case MESA_FORMAT_ETC2_RGBA8_EAC:
610 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
611 case MESA_FORMAT_ETC2_R11_EAC:
612 case MESA_FORMAT_ETC2_RG11_EAC:
613 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
614 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
615 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
616 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
617 return GL_TRUE;
618 default:
619 return GL_FALSE;
620 }
621 }
622
623
624 /**
625 * For an sRGB format, return the corresponding linear color space format.
626 * For non-sRGB formats, return the format as-is.
627 */
628 mesa_format
_mesa_get_srgb_format_linear(mesa_format format)629 _mesa_get_srgb_format_linear(mesa_format format)
630 {
631 switch (format) {
632 case MESA_FORMAT_BGR_SRGB8:
633 format = MESA_FORMAT_BGR_UNORM8;
634 break;
635 case MESA_FORMAT_A8B8G8R8_SRGB:
636 format = MESA_FORMAT_A8B8G8R8_UNORM;
637 break;
638 case MESA_FORMAT_B8G8R8A8_SRGB:
639 format = MESA_FORMAT_B8G8R8A8_UNORM;
640 break;
641 case MESA_FORMAT_A8R8G8B8_SRGB:
642 format = MESA_FORMAT_A8R8G8B8_UNORM;
643 break;
644 case MESA_FORMAT_R8G8B8A8_SRGB:
645 format = MESA_FORMAT_R8G8B8A8_UNORM;
646 break;
647 case MESA_FORMAT_L_SRGB8:
648 format = MESA_FORMAT_L_UNORM8;
649 break;
650 case MESA_FORMAT_L8A8_SRGB:
651 format = MESA_FORMAT_L8A8_UNORM;
652 break;
653 case MESA_FORMAT_A8L8_SRGB:
654 format = MESA_FORMAT_A8L8_UNORM;
655 break;
656 case MESA_FORMAT_SRGB_DXT1:
657 format = MESA_FORMAT_RGB_DXT1;
658 break;
659 case MESA_FORMAT_SRGBA_DXT1:
660 format = MESA_FORMAT_RGBA_DXT1;
661 break;
662 case MESA_FORMAT_SRGBA_DXT3:
663 format = MESA_FORMAT_RGBA_DXT3;
664 break;
665 case MESA_FORMAT_SRGBA_DXT5:
666 format = MESA_FORMAT_RGBA_DXT5;
667 break;
668 case MESA_FORMAT_R8G8B8X8_SRGB:
669 format = MESA_FORMAT_R8G8B8X8_UNORM;
670 break;
671 case MESA_FORMAT_X8B8G8R8_SRGB:
672 format = MESA_FORMAT_X8B8G8R8_UNORM;
673 break;
674 case MESA_FORMAT_ETC2_SRGB8:
675 format = MESA_FORMAT_ETC2_RGB8;
676 break;
677 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
678 format = MESA_FORMAT_ETC2_RGBA8_EAC;
679 break;
680 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
681 format = MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
682 break;
683 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
684 format = MESA_FORMAT_BPTC_RGBA_UNORM;
685 break;
686 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4:
687 format = MESA_FORMAT_RGBA_ASTC_4x4;
688 break;
689 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4:
690 format = MESA_FORMAT_RGBA_ASTC_5x4;
691 break;
692 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5:
693 format = MESA_FORMAT_RGBA_ASTC_5x5;
694 break;
695 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5:
696 format = MESA_FORMAT_RGBA_ASTC_6x5;
697 break;
698 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6:
699 format = MESA_FORMAT_RGBA_ASTC_6x6;
700 break;
701 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5:
702 format = MESA_FORMAT_RGBA_ASTC_8x5;
703 break;
704 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6:
705 format = MESA_FORMAT_RGBA_ASTC_8x6;
706 break;
707 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8:
708 format = MESA_FORMAT_RGBA_ASTC_8x8;
709 break;
710 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5:
711 format = MESA_FORMAT_RGBA_ASTC_10x5;
712 break;
713 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6:
714 format = MESA_FORMAT_RGBA_ASTC_10x6;
715 break;
716 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8:
717 format = MESA_FORMAT_RGBA_ASTC_10x8;
718 break;
719 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10:
720 format = MESA_FORMAT_RGBA_ASTC_10x10;
721 break;
722 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10:
723 format = MESA_FORMAT_RGBA_ASTC_12x10;
724 break;
725 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12:
726 format = MESA_FORMAT_RGBA_ASTC_12x12;
727 break;
728 case MESA_FORMAT_B8G8R8X8_SRGB:
729 format = MESA_FORMAT_B8G8R8X8_UNORM;
730 break;
731 case MESA_FORMAT_X8R8G8B8_SRGB:
732 format = MESA_FORMAT_X8R8G8B8_UNORM;
733 break;
734 default:
735 break;
736 }
737 return format;
738 }
739
740
741 /**
742 * If the given format is a compressed format, return a corresponding
743 * uncompressed format.
744 */
745 mesa_format
_mesa_get_uncompressed_format(mesa_format format)746 _mesa_get_uncompressed_format(mesa_format format)
747 {
748 switch (format) {
749 case MESA_FORMAT_RGB_FXT1:
750 return MESA_FORMAT_BGR_UNORM8;
751 case MESA_FORMAT_RGBA_FXT1:
752 return MESA_FORMAT_A8B8G8R8_UNORM;
753 case MESA_FORMAT_RGB_DXT1:
754 case MESA_FORMAT_SRGB_DXT1:
755 return MESA_FORMAT_BGR_UNORM8;
756 case MESA_FORMAT_RGBA_DXT1:
757 case MESA_FORMAT_SRGBA_DXT1:
758 return MESA_FORMAT_A8B8G8R8_UNORM;
759 case MESA_FORMAT_RGBA_DXT3:
760 case MESA_FORMAT_SRGBA_DXT3:
761 return MESA_FORMAT_A8B8G8R8_UNORM;
762 case MESA_FORMAT_RGBA_DXT5:
763 case MESA_FORMAT_SRGBA_DXT5:
764 return MESA_FORMAT_A8B8G8R8_UNORM;
765 case MESA_FORMAT_R_RGTC1_UNORM:
766 return MESA_FORMAT_R_UNORM8;
767 case MESA_FORMAT_R_RGTC1_SNORM:
768 return MESA_FORMAT_R_SNORM8;
769 case MESA_FORMAT_RG_RGTC2_UNORM:
770 return MESA_FORMAT_R8G8_UNORM;
771 case MESA_FORMAT_RG_RGTC2_SNORM:
772 return MESA_FORMAT_R8G8_SNORM;
773 case MESA_FORMAT_L_LATC1_UNORM:
774 return MESA_FORMAT_L_UNORM8;
775 case MESA_FORMAT_L_LATC1_SNORM:
776 return MESA_FORMAT_L_SNORM8;
777 case MESA_FORMAT_LA_LATC2_UNORM:
778 return MESA_FORMAT_L8A8_UNORM;
779 case MESA_FORMAT_LA_LATC2_SNORM:
780 return MESA_FORMAT_L8A8_SNORM;
781 case MESA_FORMAT_ETC1_RGB8:
782 case MESA_FORMAT_ETC2_RGB8:
783 case MESA_FORMAT_ETC2_SRGB8:
784 return MESA_FORMAT_BGR_UNORM8;
785 case MESA_FORMAT_ETC2_RGBA8_EAC:
786 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
787 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
788 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
789 return MESA_FORMAT_A8B8G8R8_UNORM;
790 case MESA_FORMAT_ETC2_R11_EAC:
791 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
792 return MESA_FORMAT_R_UNORM16;
793 case MESA_FORMAT_ETC2_RG11_EAC:
794 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
795 return MESA_FORMAT_R16G16_UNORM;
796 case MESA_FORMAT_BPTC_RGBA_UNORM:
797 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
798 return MESA_FORMAT_A8B8G8R8_UNORM;
799 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
800 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
801 return MESA_FORMAT_RGB_FLOAT32;
802 default:
803 #ifdef DEBUG
804 assert(!_mesa_is_format_compressed(format));
805 #endif
806 return format;
807 }
808 }
809
810
811 GLuint
_mesa_format_num_components(mesa_format format)812 _mesa_format_num_components(mesa_format format)
813 {
814 const struct gl_format_info *info = _mesa_get_format_info(format);
815 return ((info->RedBits > 0) +
816 (info->GreenBits > 0) +
817 (info->BlueBits > 0) +
818 (info->AlphaBits > 0) +
819 (info->LuminanceBits > 0) +
820 (info->IntensityBits > 0) +
821 (info->DepthBits > 0) +
822 (info->StencilBits > 0));
823 }
824
825
826 /**
827 * Returns true if a color format has data stored in the R/G/B/A channels,
828 * given an index from 0 to 3.
829 */
830 bool
_mesa_format_has_color_component(mesa_format format,int component)831 _mesa_format_has_color_component(mesa_format format, int component)
832 {
833 const struct gl_format_info *info = _mesa_get_format_info(format);
834
835 assert(info->BaseFormat != GL_DEPTH_COMPONENT &&
836 info->BaseFormat != GL_DEPTH_STENCIL &&
837 info->BaseFormat != GL_STENCIL_INDEX);
838
839 switch (component) {
840 case 0:
841 return (info->RedBits + info->IntensityBits + info->LuminanceBits) > 0;
842 case 1:
843 return (info->GreenBits + info->IntensityBits + info->LuminanceBits) > 0;
844 case 2:
845 return (info->BlueBits + info->IntensityBits + info->LuminanceBits) > 0;
846 case 3:
847 return (info->AlphaBits + info->IntensityBits) > 0;
848 default:
849 assert(!"Invalid color component: must be 0..3");
850 return false;
851 }
852 }
853
854
855 /**
856 * Return number of bytes needed to store an image of the given size
857 * in the given format.
858 */
859 GLuint
_mesa_format_image_size(mesa_format format,GLsizei width,GLsizei height,GLsizei depth)860 _mesa_format_image_size(mesa_format format, GLsizei width,
861 GLsizei height, GLsizei depth)
862 {
863 const struct gl_format_info *info = _mesa_get_format_info(format);
864 GLuint sz;
865 /* Strictly speaking, a conditional isn't needed here */
866 if (info->BlockWidth > 1 || info->BlockHeight > 1 || info->BlockDepth > 1) {
867 /* compressed format (2D only for now) */
868 const GLuint bw = info->BlockWidth;
869 const GLuint bh = info->BlockHeight;
870 const GLuint bd = info->BlockDepth;
871 const GLuint wblocks = (width + bw - 1) / bw;
872 const GLuint hblocks = (height + bh - 1) / bh;
873 const GLuint dblocks = (depth + bd - 1) / bd;
874 sz = wblocks * hblocks * dblocks * info->BytesPerBlock;
875 } else
876 /* non-compressed */
877 sz = width * height * depth * info->BytesPerBlock;
878
879 return sz;
880 }
881
882
883 /**
884 * Same as _mesa_format_image_size() but returns a 64-bit value to
885 * accommodate very large textures.
886 */
887 uint64_t
_mesa_format_image_size64(mesa_format format,GLsizei width,GLsizei height,GLsizei depth)888 _mesa_format_image_size64(mesa_format format, GLsizei width,
889 GLsizei height, GLsizei depth)
890 {
891 const struct gl_format_info *info = _mesa_get_format_info(format);
892 uint64_t sz;
893 /* Strictly speaking, a conditional isn't needed here */
894 if (info->BlockWidth > 1 || info->BlockHeight > 1 || info->BlockDepth > 1) {
895 /* compressed format (2D only for now) */
896 const uint64_t bw = info->BlockWidth;
897 const uint64_t bh = info->BlockHeight;
898 const uint64_t bd = info->BlockDepth;
899 const uint64_t wblocks = (width + bw - 1) / bw;
900 const uint64_t hblocks = (height + bh - 1) / bh;
901 const uint64_t dblocks = (depth + bd - 1) / bd;
902 sz = wblocks * hblocks * dblocks * info->BytesPerBlock;
903 } else
904 /* non-compressed */
905 sz = ((uint64_t) width * (uint64_t) height *
906 (uint64_t) depth * info->BytesPerBlock);
907
908 return sz;
909 }
910
911
912
913 GLint
_mesa_format_row_stride(mesa_format format,GLsizei width)914 _mesa_format_row_stride(mesa_format format, GLsizei width)
915 {
916 const struct gl_format_info *info = _mesa_get_format_info(format);
917 /* Strictly speaking, a conditional isn't needed here */
918 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
919 /* compressed format */
920 const GLuint bw = info->BlockWidth;
921 const GLuint wblocks = (width + bw - 1) / bw;
922 const GLint stride = wblocks * info->BytesPerBlock;
923 return stride;
924 }
925 else {
926 const GLint stride = width * info->BytesPerBlock;
927 return stride;
928 }
929 }
930
931
932
933 /**
934 * Return datatype and number of components per texel for the given
935 * uncompressed mesa_format. Only used for mipmap generation code.
936 */
937 void
_mesa_uncompressed_format_to_type_and_comps(mesa_format format,GLenum * datatype,GLuint * comps)938 _mesa_uncompressed_format_to_type_and_comps(mesa_format format,
939 GLenum *datatype, GLuint *comps)
940 {
941 switch (format) {
942 case MESA_FORMAT_A8B8G8R8_UNORM:
943 case MESA_FORMAT_R8G8B8A8_UNORM:
944 case MESA_FORMAT_B8G8R8A8_UNORM:
945 case MESA_FORMAT_A8R8G8B8_UNORM:
946 case MESA_FORMAT_X8B8G8R8_UNORM:
947 case MESA_FORMAT_R8G8B8X8_UNORM:
948 case MESA_FORMAT_B8G8R8X8_UNORM:
949 case MESA_FORMAT_X8R8G8B8_UNORM:
950 case MESA_FORMAT_A8B8G8R8_UINT:
951 case MESA_FORMAT_R8G8B8A8_UINT:
952 case MESA_FORMAT_B8G8R8A8_UINT:
953 case MESA_FORMAT_A8R8G8B8_UINT:
954 *datatype = GL_UNSIGNED_BYTE;
955 *comps = 4;
956 return;
957 case MESA_FORMAT_BGR_UNORM8:
958 case MESA_FORMAT_RGB_UNORM8:
959 *datatype = GL_UNSIGNED_BYTE;
960 *comps = 3;
961 return;
962 case MESA_FORMAT_B5G6R5_UNORM:
963 case MESA_FORMAT_R5G6B5_UNORM:
964 case MESA_FORMAT_B5G6R5_UINT:
965 case MESA_FORMAT_R5G6B5_UINT:
966 *datatype = GL_UNSIGNED_SHORT_5_6_5;
967 *comps = 3;
968 return;
969
970 case MESA_FORMAT_B4G4R4A4_UNORM:
971 case MESA_FORMAT_A4R4G4B4_UNORM:
972 case MESA_FORMAT_B4G4R4X4_UNORM:
973 case MESA_FORMAT_B4G4R4A4_UINT:
974 case MESA_FORMAT_A4R4G4B4_UINT:
975 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
976 *comps = 4;
977 return;
978
979 case MESA_FORMAT_B5G5R5A1_UNORM:
980 case MESA_FORMAT_A1R5G5B5_UNORM:
981 case MESA_FORMAT_B5G5R5X1_UNORM:
982 case MESA_FORMAT_B5G5R5A1_UINT:
983 case MESA_FORMAT_A1R5G5B5_UINT:
984 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
985 *comps = 4;
986 return;
987
988 case MESA_FORMAT_B10G10R10A2_UNORM:
989 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
990 *comps = 4;
991 return;
992
993 case MESA_FORMAT_A1B5G5R5_UNORM:
994 case MESA_FORMAT_A1B5G5R5_UINT:
995 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
996 *comps = 4;
997 return;
998
999 case MESA_FORMAT_L4A4_UNORM:
1000 *datatype = MESA_UNSIGNED_BYTE_4_4;
1001 *comps = 2;
1002 return;
1003
1004 case MESA_FORMAT_L8A8_UNORM:
1005 case MESA_FORMAT_A8L8_UNORM:
1006 case MESA_FORMAT_R8G8_UNORM:
1007 case MESA_FORMAT_G8R8_UNORM:
1008 *datatype = GL_UNSIGNED_BYTE;
1009 *comps = 2;
1010 return;
1011
1012 case MESA_FORMAT_L16A16_UNORM:
1013 case MESA_FORMAT_A16L16_UNORM:
1014 case MESA_FORMAT_R16G16_UNORM:
1015 case MESA_FORMAT_G16R16_UNORM:
1016 *datatype = GL_UNSIGNED_SHORT;
1017 *comps = 2;
1018 return;
1019
1020 case MESA_FORMAT_R_UNORM16:
1021 case MESA_FORMAT_A_UNORM16:
1022 case MESA_FORMAT_L_UNORM16:
1023 case MESA_FORMAT_I_UNORM16:
1024 *datatype = GL_UNSIGNED_SHORT;
1025 *comps = 1;
1026 return;
1027
1028 case MESA_FORMAT_R3G3B2_UNORM:
1029 case MESA_FORMAT_R3G3B2_UINT:
1030 *datatype = GL_UNSIGNED_BYTE_2_3_3_REV;
1031 *comps = 3;
1032 return;
1033 case MESA_FORMAT_A4B4G4R4_UNORM:
1034 case MESA_FORMAT_A4B4G4R4_UINT:
1035 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1036 *comps = 4;
1037 return;
1038
1039 case MESA_FORMAT_R4G4B4A4_UNORM:
1040 case MESA_FORMAT_R4G4B4A4_UINT:
1041 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1042 *comps = 4;
1043 return;
1044 case MESA_FORMAT_R5G5B5A1_UNORM:
1045 case MESA_FORMAT_R5G5B5A1_UINT:
1046 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1047 *comps = 4;
1048 return;
1049 case MESA_FORMAT_A2B10G10R10_UNORM:
1050 case MESA_FORMAT_A2B10G10R10_UINT:
1051 *datatype = GL_UNSIGNED_INT_10_10_10_2;
1052 *comps = 4;
1053 return;
1054 case MESA_FORMAT_A2R10G10B10_UNORM:
1055 case MESA_FORMAT_A2R10G10B10_UINT:
1056 *datatype = GL_UNSIGNED_INT_10_10_10_2;
1057 *comps = 4;
1058 return;
1059
1060 case MESA_FORMAT_B2G3R3_UNORM:
1061 case MESA_FORMAT_B2G3R3_UINT:
1062 *datatype = GL_UNSIGNED_BYTE_3_3_2;
1063 *comps = 3;
1064 return;
1065
1066 case MESA_FORMAT_A_UNORM8:
1067 case MESA_FORMAT_L_UNORM8:
1068 case MESA_FORMAT_I_UNORM8:
1069 case MESA_FORMAT_R_UNORM8:
1070 case MESA_FORMAT_S_UINT8:
1071 *datatype = GL_UNSIGNED_BYTE;
1072 *comps = 1;
1073 return;
1074
1075 case MESA_FORMAT_YCBCR:
1076 case MESA_FORMAT_YCBCR_REV:
1077 *datatype = GL_UNSIGNED_SHORT;
1078 *comps = 2;
1079 return;
1080
1081 case MESA_FORMAT_S8_UINT_Z24_UNORM:
1082 *datatype = GL_UNSIGNED_INT_24_8_MESA;
1083 *comps = 2;
1084 return;
1085
1086 case MESA_FORMAT_Z24_UNORM_S8_UINT:
1087 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
1088 *comps = 2;
1089 return;
1090
1091 case MESA_FORMAT_Z_UNORM16:
1092 *datatype = GL_UNSIGNED_SHORT;
1093 *comps = 1;
1094 return;
1095
1096 case MESA_FORMAT_Z24_UNORM_X8_UINT:
1097 *datatype = GL_UNSIGNED_INT;
1098 *comps = 1;
1099 return;
1100
1101 case MESA_FORMAT_X8_UINT_Z24_UNORM:
1102 *datatype = GL_UNSIGNED_INT;
1103 *comps = 1;
1104 return;
1105
1106 case MESA_FORMAT_Z_UNORM32:
1107 *datatype = GL_UNSIGNED_INT;
1108 *comps = 1;
1109 return;
1110
1111 case MESA_FORMAT_Z_FLOAT32:
1112 *datatype = GL_FLOAT;
1113 *comps = 1;
1114 return;
1115
1116 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
1117 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
1118 *comps = 1;
1119 return;
1120
1121 case MESA_FORMAT_R_SNORM8:
1122 case MESA_FORMAT_A_SNORM8:
1123 case MESA_FORMAT_L_SNORM8:
1124 case MESA_FORMAT_I_SNORM8:
1125 *datatype = GL_BYTE;
1126 *comps = 1;
1127 return;
1128 case MESA_FORMAT_R8G8_SNORM:
1129 case MESA_FORMAT_L8A8_SNORM:
1130 case MESA_FORMAT_A8L8_SNORM:
1131 *datatype = GL_BYTE;
1132 *comps = 2;
1133 return;
1134 case MESA_FORMAT_A8B8G8R8_SNORM:
1135 case MESA_FORMAT_R8G8B8A8_SNORM:
1136 case MESA_FORMAT_X8B8G8R8_SNORM:
1137 *datatype = GL_BYTE;
1138 *comps = 4;
1139 return;
1140
1141 case MESA_FORMAT_RGBA_UNORM16:
1142 *datatype = GL_UNSIGNED_SHORT;
1143 *comps = 4;
1144 return;
1145
1146 case MESA_FORMAT_R_SNORM16:
1147 case MESA_FORMAT_A_SNORM16:
1148 case MESA_FORMAT_L_SNORM16:
1149 case MESA_FORMAT_I_SNORM16:
1150 *datatype = GL_SHORT;
1151 *comps = 1;
1152 return;
1153 case MESA_FORMAT_R16G16_SNORM:
1154 case MESA_FORMAT_LA_SNORM16:
1155 *datatype = GL_SHORT;
1156 *comps = 2;
1157 return;
1158 case MESA_FORMAT_RGB_SNORM16:
1159 *datatype = GL_SHORT;
1160 *comps = 3;
1161 return;
1162 case MESA_FORMAT_RGBA_SNORM16:
1163 *datatype = GL_SHORT;
1164 *comps = 4;
1165 return;
1166
1167 case MESA_FORMAT_BGR_SRGB8:
1168 *datatype = GL_UNSIGNED_BYTE;
1169 *comps = 3;
1170 return;
1171 case MESA_FORMAT_A8B8G8R8_SRGB:
1172 case MESA_FORMAT_B8G8R8A8_SRGB:
1173 case MESA_FORMAT_A8R8G8B8_SRGB:
1174 case MESA_FORMAT_R8G8B8A8_SRGB:
1175 *datatype = GL_UNSIGNED_BYTE;
1176 *comps = 4;
1177 return;
1178 case MESA_FORMAT_L_SRGB8:
1179 *datatype = GL_UNSIGNED_BYTE;
1180 *comps = 1;
1181 return;
1182 case MESA_FORMAT_L8A8_SRGB:
1183 case MESA_FORMAT_A8L8_SRGB:
1184 *datatype = GL_UNSIGNED_BYTE;
1185 *comps = 2;
1186 return;
1187
1188 case MESA_FORMAT_RGBA_FLOAT32:
1189 *datatype = GL_FLOAT;
1190 *comps = 4;
1191 return;
1192 case MESA_FORMAT_RGBA_FLOAT16:
1193 *datatype = GL_HALF_FLOAT_ARB;
1194 *comps = 4;
1195 return;
1196 case MESA_FORMAT_RGB_FLOAT32:
1197 *datatype = GL_FLOAT;
1198 *comps = 3;
1199 return;
1200 case MESA_FORMAT_RGB_FLOAT16:
1201 *datatype = GL_HALF_FLOAT_ARB;
1202 *comps = 3;
1203 return;
1204 case MESA_FORMAT_LA_FLOAT32:
1205 case MESA_FORMAT_RG_FLOAT32:
1206 *datatype = GL_FLOAT;
1207 *comps = 2;
1208 return;
1209 case MESA_FORMAT_LA_FLOAT16:
1210 case MESA_FORMAT_RG_FLOAT16:
1211 *datatype = GL_HALF_FLOAT_ARB;
1212 *comps = 2;
1213 return;
1214 case MESA_FORMAT_A_FLOAT32:
1215 case MESA_FORMAT_L_FLOAT32:
1216 case MESA_FORMAT_I_FLOAT32:
1217 case MESA_FORMAT_R_FLOAT32:
1218 *datatype = GL_FLOAT;
1219 *comps = 1;
1220 return;
1221 case MESA_FORMAT_A_FLOAT16:
1222 case MESA_FORMAT_L_FLOAT16:
1223 case MESA_FORMAT_I_FLOAT16:
1224 case MESA_FORMAT_R_FLOAT16:
1225 *datatype = GL_HALF_FLOAT_ARB;
1226 *comps = 1;
1227 return;
1228
1229 case MESA_FORMAT_A_UINT8:
1230 case MESA_FORMAT_L_UINT8:
1231 case MESA_FORMAT_I_UINT8:
1232 *datatype = GL_UNSIGNED_BYTE;
1233 *comps = 1;
1234 return;
1235 case MESA_FORMAT_LA_UINT8:
1236 *datatype = GL_UNSIGNED_BYTE;
1237 *comps = 2;
1238 return;
1239
1240 case MESA_FORMAT_A_UINT16:
1241 case MESA_FORMAT_L_UINT16:
1242 case MESA_FORMAT_I_UINT16:
1243 *datatype = GL_UNSIGNED_SHORT;
1244 *comps = 1;
1245 return;
1246 case MESA_FORMAT_LA_UINT16:
1247 *datatype = GL_UNSIGNED_SHORT;
1248 *comps = 2;
1249 return;
1250 case MESA_FORMAT_A_UINT32:
1251 case MESA_FORMAT_L_UINT32:
1252 case MESA_FORMAT_I_UINT32:
1253 *datatype = GL_UNSIGNED_INT;
1254 *comps = 1;
1255 return;
1256 case MESA_FORMAT_LA_UINT32:
1257 *datatype = GL_UNSIGNED_INT;
1258 *comps = 2;
1259 return;
1260 case MESA_FORMAT_A_SINT8:
1261 case MESA_FORMAT_L_SINT8:
1262 case MESA_FORMAT_I_SINT8:
1263 *datatype = GL_BYTE;
1264 *comps = 1;
1265 return;
1266 case MESA_FORMAT_LA_SINT8:
1267 *datatype = GL_BYTE;
1268 *comps = 2;
1269 return;
1270
1271 case MESA_FORMAT_A_SINT16:
1272 case MESA_FORMAT_L_SINT16:
1273 case MESA_FORMAT_I_SINT16:
1274 *datatype = GL_SHORT;
1275 *comps = 1;
1276 return;
1277 case MESA_FORMAT_LA_SINT16:
1278 *datatype = GL_SHORT;
1279 *comps = 2;
1280 return;
1281
1282 case MESA_FORMAT_A_SINT32:
1283 case MESA_FORMAT_L_SINT32:
1284 case MESA_FORMAT_I_SINT32:
1285 *datatype = GL_INT;
1286 *comps = 1;
1287 return;
1288 case MESA_FORMAT_LA_SINT32:
1289 *datatype = GL_INT;
1290 *comps = 2;
1291 return;
1292
1293 case MESA_FORMAT_R_SINT8:
1294 *datatype = GL_BYTE;
1295 *comps = 1;
1296 return;
1297 case MESA_FORMAT_RG_SINT8:
1298 *datatype = GL_BYTE;
1299 *comps = 2;
1300 return;
1301 case MESA_FORMAT_RGB_SINT8:
1302 *datatype = GL_BYTE;
1303 *comps = 3;
1304 return;
1305 case MESA_FORMAT_RGBA_SINT8:
1306 *datatype = GL_BYTE;
1307 *comps = 4;
1308 return;
1309 case MESA_FORMAT_R_SINT16:
1310 *datatype = GL_SHORT;
1311 *comps = 1;
1312 return;
1313 case MESA_FORMAT_RG_SINT16:
1314 *datatype = GL_SHORT;
1315 *comps = 2;
1316 return;
1317 case MESA_FORMAT_RGB_SINT16:
1318 *datatype = GL_SHORT;
1319 *comps = 3;
1320 return;
1321 case MESA_FORMAT_RGBA_SINT16:
1322 *datatype = GL_SHORT;
1323 *comps = 4;
1324 return;
1325 case MESA_FORMAT_R_SINT32:
1326 *datatype = GL_INT;
1327 *comps = 1;
1328 return;
1329 case MESA_FORMAT_RG_SINT32:
1330 *datatype = GL_INT;
1331 *comps = 2;
1332 return;
1333 case MESA_FORMAT_RGB_SINT32:
1334 *datatype = GL_INT;
1335 *comps = 3;
1336 return;
1337 case MESA_FORMAT_RGBA_SINT32:
1338 *datatype = GL_INT;
1339 *comps = 4;
1340 return;
1341
1342 /**
1343 * \name Non-normalized unsigned integer formats.
1344 */
1345 case MESA_FORMAT_R_UINT8:
1346 *datatype = GL_UNSIGNED_BYTE;
1347 *comps = 1;
1348 return;
1349 case MESA_FORMAT_RG_UINT8:
1350 *datatype = GL_UNSIGNED_BYTE;
1351 *comps = 2;
1352 return;
1353 case MESA_FORMAT_RGB_UINT8:
1354 *datatype = GL_UNSIGNED_BYTE;
1355 *comps = 3;
1356 return;
1357 case MESA_FORMAT_RGBA_UINT8:
1358 *datatype = GL_UNSIGNED_BYTE;
1359 *comps = 4;
1360 return;
1361 case MESA_FORMAT_R_UINT16:
1362 *datatype = GL_UNSIGNED_SHORT;
1363 *comps = 1;
1364 return;
1365 case MESA_FORMAT_RG_UINT16:
1366 *datatype = GL_UNSIGNED_SHORT;
1367 *comps = 2;
1368 return;
1369 case MESA_FORMAT_RGB_UINT16:
1370 *datatype = GL_UNSIGNED_SHORT;
1371 *comps = 3;
1372 return;
1373 case MESA_FORMAT_RGBA_UINT16:
1374 *datatype = GL_UNSIGNED_SHORT;
1375 *comps = 4;
1376 return;
1377 case MESA_FORMAT_R_UINT32:
1378 *datatype = GL_UNSIGNED_INT;
1379 *comps = 1;
1380 return;
1381 case MESA_FORMAT_RG_UINT32:
1382 *datatype = GL_UNSIGNED_INT;
1383 *comps = 2;
1384 return;
1385 case MESA_FORMAT_RGB_UINT32:
1386 *datatype = GL_UNSIGNED_INT;
1387 *comps = 3;
1388 return;
1389 case MESA_FORMAT_RGBA_UINT32:
1390 *datatype = GL_UNSIGNED_INT;
1391 *comps = 4;
1392 return;
1393
1394 case MESA_FORMAT_R9G9B9E5_FLOAT:
1395 *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
1396 *comps = 3;
1397 return;
1398
1399 case MESA_FORMAT_R11G11B10_FLOAT:
1400 *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
1401 *comps = 3;
1402 return;
1403
1404 case MESA_FORMAT_B10G10R10A2_UINT:
1405 case MESA_FORMAT_R10G10B10A2_UINT:
1406 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1407 *comps = 4;
1408 return;
1409
1410 case MESA_FORMAT_R8G8B8X8_SRGB:
1411 case MESA_FORMAT_X8B8G8R8_SRGB:
1412 case MESA_FORMAT_RGBX_UINT8:
1413 *datatype = GL_UNSIGNED_BYTE;
1414 *comps = 4;
1415 return;
1416
1417 case MESA_FORMAT_R8G8B8X8_SNORM:
1418 case MESA_FORMAT_RGBX_SINT8:
1419 *datatype = GL_BYTE;
1420 *comps = 4;
1421 return;
1422
1423 case MESA_FORMAT_B10G10R10X2_UNORM:
1424 case MESA_FORMAT_R10G10B10X2_UNORM:
1425 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1426 *comps = 4;
1427 return;
1428
1429 case MESA_FORMAT_RGBX_UNORM16:
1430 case MESA_FORMAT_RGBX_UINT16:
1431 *datatype = GL_UNSIGNED_SHORT;
1432 *comps = 4;
1433 return;
1434
1435 case MESA_FORMAT_RGBX_SNORM16:
1436 case MESA_FORMAT_RGBX_SINT16:
1437 *datatype = GL_SHORT;
1438 *comps = 4;
1439 return;
1440
1441 case MESA_FORMAT_RGBX_FLOAT16:
1442 *datatype = GL_HALF_FLOAT;
1443 *comps = 4;
1444 return;
1445
1446 case MESA_FORMAT_RGBX_FLOAT32:
1447 *datatype = GL_FLOAT;
1448 *comps = 4;
1449 return;
1450
1451 case MESA_FORMAT_RGBX_UINT32:
1452 *datatype = GL_UNSIGNED_INT;
1453 *comps = 4;
1454 return;
1455
1456 case MESA_FORMAT_RGBX_SINT32:
1457 *datatype = GL_INT;
1458 *comps = 4;
1459 return;
1460
1461 case MESA_FORMAT_R10G10B10A2_UNORM:
1462 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
1463 *comps = 4;
1464 return;
1465
1466 case MESA_FORMAT_G8R8_SNORM:
1467 *datatype = GL_BYTE;
1468 *comps = 2;
1469 return;
1470
1471 case MESA_FORMAT_G16R16_SNORM:
1472 *datatype = GL_SHORT;
1473 *comps = 2;
1474 return;
1475
1476 case MESA_FORMAT_B8G8R8X8_SRGB:
1477 case MESA_FORMAT_X8R8G8B8_SRGB:
1478 *datatype = GL_UNSIGNED_BYTE;
1479 *comps = 4;
1480 return;
1481
1482 case MESA_FORMAT_COUNT:
1483 assert(0);
1484 return;
1485 default:
1486 /* Warn if any formats are not handled */
1487 _mesa_problem(NULL, "bad format %s in _mesa_uncompressed_format_to_type_and_comps",
1488 _mesa_get_format_name(format));
1489 assert(format == MESA_FORMAT_NONE ||
1490 _mesa_is_format_compressed(format));
1491 *datatype = 0;
1492 *comps = 1;
1493 }
1494 }
1495
1496 /**
1497 * Check if a mesa_format exactly matches a GL format/type combination
1498 * such that we can use memcpy() from one to the other.
1499 * \param mesa_format a MESA_FORMAT_x value
1500 * \param format the user-specified image format
1501 * \param type the user-specified image datatype
1502 * \param swapBytes typically the current pixel pack/unpack byteswap state
1503 * \param[out] error GL_NO_ERROR if format is an expected input.
1504 * GL_INVALID_ENUM if format is an unexpected input.
1505 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
1506 */
1507 GLboolean
_mesa_format_matches_format_and_type(mesa_format mesa_format,GLenum format,GLenum type,GLboolean swapBytes,GLenum * error)1508 _mesa_format_matches_format_and_type(mesa_format mesa_format,
1509 GLenum format, GLenum type,
1510 GLboolean swapBytes, GLenum *error)
1511 {
1512 const GLboolean littleEndian = _mesa_little_endian();
1513 if (error)
1514 *error = GL_NO_ERROR;
1515
1516 /* Note: When reading a GL format/type combination, the format lists channel
1517 * assignments from most significant channel in the type to least
1518 * significant. A type with _REV indicates that the assignments are
1519 * swapped, so they are listed from least significant to most significant.
1520 *
1521 * Compressed formats will fall through and return GL_FALSE.
1522 *
1523 * For sanity, please keep this switch statement ordered the same as the
1524 * enums in formats.h.
1525 */
1526
1527 switch (mesa_format) {
1528
1529 case MESA_FORMAT_NONE:
1530 case MESA_FORMAT_COUNT:
1531 return GL_FALSE;
1532
1533 case MESA_FORMAT_A8B8G8R8_UNORM:
1534 case MESA_FORMAT_A8B8G8R8_SRGB:
1535 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
1536 return GL_TRUE;
1537
1538 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
1539 return GL_TRUE;
1540
1541 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
1542 return GL_TRUE;
1543
1544 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV
1545 && !swapBytes)
1546 return GL_TRUE;
1547
1548 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8
1549 && swapBytes)
1550 return GL_TRUE;
1551
1552 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
1553 return GL_TRUE;
1554
1555 return GL_FALSE;
1556
1557 case MESA_FORMAT_R8G8B8A8_UNORM:
1558 case MESA_FORMAT_R8G8B8A8_SRGB:
1559 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1560 !swapBytes)
1561 return GL_TRUE;
1562
1563 if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
1564 return GL_TRUE;
1565
1566 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && littleEndian)
1567 return GL_TRUE;
1568
1569 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8 &&
1570 !swapBytes)
1571 return GL_TRUE;
1572
1573 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1574 swapBytes)
1575 return GL_TRUE;
1576
1577 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && !littleEndian)
1578 return GL_TRUE;
1579
1580 return GL_FALSE;
1581
1582 case MESA_FORMAT_B8G8R8A8_UNORM:
1583 case MESA_FORMAT_B8G8R8A8_SRGB:
1584 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1585 !swapBytes)
1586 return GL_TRUE;
1587
1588 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
1589 return GL_TRUE;
1590
1591 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
1592 return GL_TRUE;
1593
1594 return GL_FALSE;
1595
1596 case MESA_FORMAT_A8R8G8B8_UNORM:
1597 case MESA_FORMAT_A8R8G8B8_SRGB:
1598 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
1599 return GL_TRUE;
1600
1601 if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
1602 swapBytes)
1603 return GL_TRUE;
1604
1605 if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
1606 return GL_TRUE;
1607
1608 return GL_FALSE;
1609
1610 case MESA_FORMAT_X8B8G8R8_UNORM:
1611 case MESA_FORMAT_R8G8B8X8_UNORM:
1612 return GL_FALSE;
1613
1614 case MESA_FORMAT_B8G8R8X8_UNORM:
1615 case MESA_FORMAT_X8R8G8B8_UNORM:
1616 return GL_FALSE;
1617
1618 case MESA_FORMAT_BGR_UNORM8:
1619 case MESA_FORMAT_BGR_SRGB8:
1620 return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
1621
1622 case MESA_FORMAT_RGB_UNORM8:
1623 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
1624
1625 case MESA_FORMAT_B5G6R5_UNORM:
1626 return ((format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) ||
1627 (format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
1628 !swapBytes;
1629
1630 case MESA_FORMAT_R5G6B5_UNORM:
1631 return ((format == GL_BGR && type == GL_UNSIGNED_SHORT_5_6_5) ||
1632 (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5_REV)) &&
1633 !swapBytes;
1634
1635 case MESA_FORMAT_B4G4R4A4_UNORM:
1636 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
1637 !swapBytes;
1638
1639 case MESA_FORMAT_A4R4G4B4_UNORM:
1640 return GL_FALSE;
1641
1642 case MESA_FORMAT_A1B5G5R5_UNORM:
1643 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
1644 !swapBytes;
1645
1646 case MESA_FORMAT_B5G5R5A1_UNORM:
1647 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
1648 !swapBytes;
1649
1650 case MESA_FORMAT_A1R5G5B5_UNORM:
1651 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
1652 !swapBytes;
1653
1654 case MESA_FORMAT_L4A4_UNORM:
1655 return GL_FALSE;
1656 case MESA_FORMAT_L8A8_UNORM:
1657 case MESA_FORMAT_L8A8_SRGB:
1658 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
1659 case MESA_FORMAT_A8L8_UNORM:
1660 case MESA_FORMAT_A8L8_SRGB:
1661 return GL_FALSE;
1662
1663 case MESA_FORMAT_L16A16_UNORM:
1664 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian && !swapBytes;
1665 case MESA_FORMAT_A16L16_UNORM:
1666 return GL_FALSE;
1667
1668 case MESA_FORMAT_B2G3R3_UNORM:
1669 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
1670
1671 case MESA_FORMAT_R3G3B2_UNORM:
1672 return format == GL_RGB && type == GL_UNSIGNED_BYTE_2_3_3_REV;
1673
1674 case MESA_FORMAT_A4B4G4R4_UNORM:
1675 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
1676 return GL_TRUE;
1677
1678 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
1679 return GL_TRUE;
1680
1681 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
1682 return GL_TRUE;
1683
1684 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
1685 return GL_TRUE;
1686
1687 return GL_FALSE;
1688
1689 case MESA_FORMAT_R4G4B4A4_UNORM:
1690 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
1691 return GL_TRUE;
1692
1693 if (format == GL_ABGR_EXT && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
1694 return GL_TRUE;
1695
1696 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
1697 return GL_TRUE;
1698
1699 if (format == GL_RGBA && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
1700 return GL_TRUE;
1701
1702 return GL_FALSE;
1703
1704 case MESA_FORMAT_R5G5B5A1_UNORM:
1705 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
1706
1707 case MESA_FORMAT_A2B10G10R10_UNORM:
1708 return format == GL_RGBA && type == GL_UNSIGNED_INT_10_10_10_2;
1709
1710 case MESA_FORMAT_A2B10G10R10_UINT:
1711 return format == GL_RGBA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
1712
1713 case MESA_FORMAT_A2R10G10B10_UNORM:
1714 return format == GL_BGRA && type == GL_UNSIGNED_INT_10_10_10_2;
1715
1716 case MESA_FORMAT_A2R10G10B10_UINT:
1717 return format == GL_BGRA_INTEGER_EXT && type == GL_UNSIGNED_INT_10_10_10_2;
1718
1719 case MESA_FORMAT_A_UNORM8:
1720 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
1721 case MESA_FORMAT_A_UNORM16:
1722 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && !swapBytes;
1723 case MESA_FORMAT_L_UNORM8:
1724 case MESA_FORMAT_L_SRGB8:
1725 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
1726 case MESA_FORMAT_L_UNORM16:
1727 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && !swapBytes;
1728 case MESA_FORMAT_I_UNORM8:
1729 return format == GL_RED && type == GL_UNSIGNED_BYTE;
1730 case MESA_FORMAT_I_UNORM16:
1731 return format == GL_RED && type == GL_UNSIGNED_SHORT && !swapBytes;
1732
1733 case MESA_FORMAT_YCBCR:
1734 return format == GL_YCBCR_MESA &&
1735 ((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian != swapBytes) ||
1736 (type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian == swapBytes));
1737 case MESA_FORMAT_YCBCR_REV:
1738 return format == GL_YCBCR_MESA &&
1739 ((type == GL_UNSIGNED_SHORT_8_8_MESA && littleEndian == swapBytes) ||
1740 (type == GL_UNSIGNED_SHORT_8_8_REV_MESA && littleEndian != swapBytes));
1741
1742 case MESA_FORMAT_R_UNORM8:
1743 return format == GL_RED && type == GL_UNSIGNED_BYTE;
1744 case MESA_FORMAT_R8G8_UNORM:
1745 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
1746 case MESA_FORMAT_G8R8_UNORM:
1747 return GL_FALSE;
1748
1749 case MESA_FORMAT_R_UNORM16:
1750 return format == GL_RED && type == GL_UNSIGNED_SHORT &&
1751 !swapBytes;
1752 case MESA_FORMAT_R16G16_UNORM:
1753 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian &&
1754 !swapBytes;
1755 case MESA_FORMAT_G16R16_UNORM:
1756 return GL_FALSE;
1757
1758 case MESA_FORMAT_B10G10R10A2_UNORM:
1759 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
1760 !swapBytes;
1761
1762 case MESA_FORMAT_S8_UINT_Z24_UNORM:
1763 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8 &&
1764 !swapBytes;
1765 case MESA_FORMAT_X8_UINT_Z24_UNORM:
1766 case MESA_FORMAT_Z24_UNORM_S8_UINT:
1767 return GL_FALSE;
1768
1769 case MESA_FORMAT_Z_UNORM16:
1770 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT &&
1771 !swapBytes;
1772
1773 case MESA_FORMAT_Z24_UNORM_X8_UINT:
1774 return GL_FALSE;
1775
1776 case MESA_FORMAT_Z_UNORM32:
1777 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT &&
1778 !swapBytes;
1779
1780 case MESA_FORMAT_S_UINT8:
1781 return format == GL_STENCIL_INDEX && type == GL_UNSIGNED_BYTE;
1782
1783 case MESA_FORMAT_RGBA_FLOAT32:
1784 return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
1785 case MESA_FORMAT_RGBA_FLOAT16:
1786 return format == GL_RGBA && type == GL_HALF_FLOAT && !swapBytes;
1787
1788 case MESA_FORMAT_RGB_FLOAT32:
1789 return format == GL_RGB && type == GL_FLOAT && !swapBytes;
1790 case MESA_FORMAT_RGB_FLOAT16:
1791 return format == GL_RGB && type == GL_HALF_FLOAT && !swapBytes;
1792
1793 case MESA_FORMAT_A_FLOAT32:
1794 return format == GL_ALPHA && type == GL_FLOAT && !swapBytes;
1795 case MESA_FORMAT_A_FLOAT16:
1796 return format == GL_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
1797
1798 case MESA_FORMAT_L_FLOAT32:
1799 return format == GL_LUMINANCE && type == GL_FLOAT && !swapBytes;
1800 case MESA_FORMAT_L_FLOAT16:
1801 return format == GL_LUMINANCE && type == GL_HALF_FLOAT && !swapBytes;
1802
1803 case MESA_FORMAT_LA_FLOAT32:
1804 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT && !swapBytes;
1805 case MESA_FORMAT_LA_FLOAT16:
1806 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
1807
1808 case MESA_FORMAT_I_FLOAT32:
1809 return format == GL_RED && type == GL_FLOAT && !swapBytes;
1810 case MESA_FORMAT_I_FLOAT16:
1811 return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
1812
1813 case MESA_FORMAT_R_FLOAT32:
1814 return format == GL_RED && type == GL_FLOAT && !swapBytes;
1815 case MESA_FORMAT_R_FLOAT16:
1816 return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
1817
1818 case MESA_FORMAT_RG_FLOAT32:
1819 return format == GL_RG && type == GL_FLOAT && !swapBytes;
1820 case MESA_FORMAT_RG_FLOAT16:
1821 return format == GL_RG && type == GL_HALF_FLOAT && !swapBytes;
1822
1823 case MESA_FORMAT_A_UINT8:
1824 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_BYTE;
1825 case MESA_FORMAT_A_UINT16:
1826 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_SHORT &&
1827 !swapBytes;
1828 case MESA_FORMAT_A_UINT32:
1829 return format == GL_ALPHA_INTEGER && type == GL_UNSIGNED_INT &&
1830 !swapBytes;
1831 case MESA_FORMAT_A_SINT8:
1832 return format == GL_ALPHA_INTEGER && type == GL_BYTE;
1833 case MESA_FORMAT_A_SINT16:
1834 return format == GL_ALPHA_INTEGER && type == GL_SHORT && !swapBytes;
1835 case MESA_FORMAT_A_SINT32:
1836 return format == GL_ALPHA_INTEGER && type == GL_INT && !swapBytes;
1837
1838 case MESA_FORMAT_I_UINT8:
1839 return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
1840 case MESA_FORMAT_I_UINT16:
1841 return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
1842 case MESA_FORMAT_I_UINT32:
1843 return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1844 case MESA_FORMAT_I_SINT8:
1845 return format == GL_RED_INTEGER && type == GL_BYTE;
1846 case MESA_FORMAT_I_SINT16:
1847 return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
1848 case MESA_FORMAT_I_SINT32:
1849 return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
1850
1851 case MESA_FORMAT_L_UINT8:
1852 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_BYTE;
1853 case MESA_FORMAT_L_UINT16:
1854 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_SHORT &&
1855 !swapBytes;
1856 case MESA_FORMAT_L_UINT32:
1857 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_UNSIGNED_INT &&
1858 !swapBytes;
1859 case MESA_FORMAT_L_SINT8:
1860 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_BYTE;
1861 case MESA_FORMAT_L_SINT16:
1862 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_SHORT &&
1863 !swapBytes;
1864 case MESA_FORMAT_L_SINT32:
1865 return format == GL_LUMINANCE_INTEGER_EXT && type == GL_INT && !swapBytes;
1866
1867 case MESA_FORMAT_LA_UINT8:
1868 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1869 type == GL_UNSIGNED_BYTE && !swapBytes;
1870 case MESA_FORMAT_LA_UINT16:
1871 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1872 type == GL_UNSIGNED_SHORT && !swapBytes;
1873 case MESA_FORMAT_LA_UINT32:
1874 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT &&
1875 type == GL_UNSIGNED_INT && !swapBytes;
1876 case MESA_FORMAT_LA_SINT8:
1877 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_BYTE &&
1878 !swapBytes;
1879 case MESA_FORMAT_LA_SINT16:
1880 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_SHORT &&
1881 !swapBytes;
1882 case MESA_FORMAT_LA_SINT32:
1883 return format == GL_LUMINANCE_ALPHA_INTEGER_EXT && type == GL_INT &&
1884 !swapBytes;
1885
1886 case MESA_FORMAT_R_SINT8:
1887 return format == GL_RED_INTEGER && type == GL_BYTE;
1888 case MESA_FORMAT_RG_SINT8:
1889 return format == GL_RG_INTEGER && type == GL_BYTE && !swapBytes;
1890 case MESA_FORMAT_RGB_SINT8:
1891 return format == GL_RGB_INTEGER && type == GL_BYTE && !swapBytes;
1892 case MESA_FORMAT_RGBA_SINT8:
1893 return format == GL_RGBA_INTEGER && type == GL_BYTE && !swapBytes;
1894 case MESA_FORMAT_R_SINT16:
1895 return format == GL_RED_INTEGER && type == GL_SHORT && !swapBytes;
1896 case MESA_FORMAT_RG_SINT16:
1897 return format == GL_RG_INTEGER && type == GL_SHORT && !swapBytes;
1898 case MESA_FORMAT_RGB_SINT16:
1899 return format == GL_RGB_INTEGER && type == GL_SHORT && !swapBytes;
1900 case MESA_FORMAT_RGBA_SINT16:
1901 return format == GL_RGBA_INTEGER && type == GL_SHORT && !swapBytes;
1902 case MESA_FORMAT_R_SINT32:
1903 return format == GL_RED_INTEGER && type == GL_INT && !swapBytes;
1904 case MESA_FORMAT_RG_SINT32:
1905 return format == GL_RG_INTEGER && type == GL_INT && !swapBytes;
1906 case MESA_FORMAT_RGB_SINT32:
1907 return format == GL_RGB_INTEGER && type == GL_INT && !swapBytes;
1908 case MESA_FORMAT_RGBA_SINT32:
1909 return format == GL_RGBA_INTEGER && type == GL_INT && !swapBytes;
1910
1911 case MESA_FORMAT_R_UINT8:
1912 return format == GL_RED_INTEGER && type == GL_UNSIGNED_BYTE;
1913 case MESA_FORMAT_RG_UINT8:
1914 return format == GL_RG_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
1915 case MESA_FORMAT_RGB_UINT8:
1916 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE && !swapBytes;
1917 case MESA_FORMAT_RGBA_UINT8:
1918 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_BYTE &&
1919 !swapBytes;
1920 case MESA_FORMAT_R_UINT16:
1921 return format == GL_RED_INTEGER && type == GL_UNSIGNED_SHORT &&
1922 !swapBytes;
1923 case MESA_FORMAT_RG_UINT16:
1924 return format == GL_RG_INTEGER && type == GL_UNSIGNED_SHORT && !swapBytes;
1925 case MESA_FORMAT_RGB_UINT16:
1926 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT &&
1927 !swapBytes;
1928 case MESA_FORMAT_RGBA_UINT16:
1929 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT &&
1930 !swapBytes;
1931 case MESA_FORMAT_R_UINT32:
1932 return format == GL_RED_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1933 case MESA_FORMAT_RG_UINT32:
1934 return format == GL_RG_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1935 case MESA_FORMAT_RGB_UINT32:
1936 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1937 case MESA_FORMAT_RGBA_UINT32:
1938 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT && !swapBytes;
1939
1940 case MESA_FORMAT_R_SNORM8:
1941 return format == GL_RED && type == GL_BYTE;
1942 case MESA_FORMAT_R8G8_SNORM:
1943 return format == GL_RG && type == GL_BYTE && littleEndian &&
1944 !swapBytes;
1945 case MESA_FORMAT_X8B8G8R8_SNORM:
1946 return GL_FALSE;
1947
1948 case MESA_FORMAT_A8B8G8R8_SNORM:
1949 if (format == GL_RGBA && type == GL_BYTE && !littleEndian)
1950 return GL_TRUE;
1951
1952 if (format == GL_ABGR_EXT && type == GL_BYTE && littleEndian)
1953 return GL_TRUE;
1954
1955 return GL_FALSE;
1956
1957 case MESA_FORMAT_R8G8B8A8_SNORM:
1958 if (format == GL_RGBA && type == GL_BYTE && littleEndian)
1959 return GL_TRUE;
1960
1961 if (format == GL_ABGR_EXT && type == GL_BYTE && !littleEndian)
1962 return GL_TRUE;
1963
1964 return GL_FALSE;
1965
1966 case MESA_FORMAT_R_SNORM16:
1967 return format == GL_RED && type == GL_SHORT &&
1968 !swapBytes;
1969 case MESA_FORMAT_R16G16_SNORM:
1970 return format == GL_RG && type == GL_SHORT && littleEndian && !swapBytes;
1971 case MESA_FORMAT_RGB_SNORM16:
1972 return format == GL_RGB && type == GL_SHORT && !swapBytes;
1973 case MESA_FORMAT_RGBA_SNORM16:
1974 return format == GL_RGBA && type == GL_SHORT && !swapBytes;
1975 case MESA_FORMAT_RGBA_UNORM16:
1976 return format == GL_RGBA && type == GL_UNSIGNED_SHORT &&
1977 !swapBytes;
1978
1979 case MESA_FORMAT_A_SNORM8:
1980 return format == GL_ALPHA && type == GL_BYTE;
1981 case MESA_FORMAT_L_SNORM8:
1982 return format == GL_LUMINANCE && type == GL_BYTE;
1983 case MESA_FORMAT_L8A8_SNORM:
1984 return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
1985 littleEndian && !swapBytes;
1986 case MESA_FORMAT_A8L8_SNORM:
1987 return format == GL_LUMINANCE_ALPHA && type == GL_BYTE &&
1988 !littleEndian && !swapBytes;
1989 case MESA_FORMAT_I_SNORM8:
1990 return format == GL_RED && type == GL_BYTE;
1991 case MESA_FORMAT_A_SNORM16:
1992 return format == GL_ALPHA && type == GL_SHORT && !swapBytes;
1993 case MESA_FORMAT_L_SNORM16:
1994 return format == GL_LUMINANCE && type == GL_SHORT && !swapBytes;
1995 case MESA_FORMAT_LA_SNORM16:
1996 return format == GL_LUMINANCE_ALPHA && type == GL_SHORT &&
1997 littleEndian && !swapBytes;
1998 case MESA_FORMAT_I_SNORM16:
1999 return format == GL_RED && type == GL_SHORT && littleEndian &&
2000 !swapBytes;
2001
2002 case MESA_FORMAT_B10G10R10A2_UINT:
2003 return (format == GL_BGRA_INTEGER_EXT &&
2004 type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2005 !swapBytes);
2006
2007 case MESA_FORMAT_R10G10B10A2_UINT:
2008 return (format == GL_RGBA_INTEGER_EXT &&
2009 type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2010 !swapBytes);
2011
2012 case MESA_FORMAT_B5G6R5_UINT:
2013 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT_5_6_5;
2014
2015 case MESA_FORMAT_R5G6B5_UINT:
2016 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_SHORT_5_6_5_REV;
2017
2018 case MESA_FORMAT_B2G3R3_UINT:
2019 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE_3_3_2;
2020
2021 case MESA_FORMAT_R3G3B2_UINT:
2022 return format == GL_RGB_INTEGER && type == GL_UNSIGNED_BYTE_2_3_3_REV;
2023
2024 case MESA_FORMAT_A4B4G4R4_UINT:
2025 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4 && !swapBytes)
2026 return GL_TRUE;
2027
2028 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && swapBytes)
2029 return GL_TRUE;
2030 return GL_FALSE;
2031
2032 case MESA_FORMAT_R4G4B4A4_UINT:
2033 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV && !swapBytes)
2034 return GL_TRUE;
2035
2036 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4 && swapBytes)
2037 return GL_TRUE;
2038
2039 return GL_FALSE;
2040
2041 case MESA_FORMAT_B4G4R4A4_UINT:
2042 return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
2043 !swapBytes;
2044
2045 case MESA_FORMAT_A4R4G4B4_UINT:
2046 return GL_FALSE;
2047
2048 case MESA_FORMAT_A1B5G5R5_UINT:
2049 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
2050 !swapBytes;
2051
2052 case MESA_FORMAT_B5G5R5A1_UINT:
2053 return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
2054 !swapBytes;
2055
2056 case MESA_FORMAT_A1R5G5B5_UINT:
2057 return format == GL_BGRA_INTEGER && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
2058 !swapBytes;
2059
2060 case MESA_FORMAT_R5G5B5A1_UINT:
2061 return format == GL_RGBA_INTEGER && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
2062
2063 case MESA_FORMAT_A8B8G8R8_UINT:
2064 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
2065 return GL_TRUE;
2066
2067 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
2068 return GL_TRUE;
2069 return GL_FALSE;
2070
2071 case MESA_FORMAT_A8R8G8B8_UINT:
2072 if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 &&
2073 !swapBytes)
2074 return GL_TRUE;
2075
2076 if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2077 swapBytes)
2078 return GL_TRUE;
2079
2080 return GL_FALSE;
2081
2082 case MESA_FORMAT_R8G8B8A8_UINT:
2083 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2084 !swapBytes)
2085 return GL_TRUE;
2086
2087 if (format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
2088 return GL_TRUE;
2089
2090 return GL_FALSE;
2091
2092 case MESA_FORMAT_B8G8R8A8_UINT:
2093 if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
2094 !swapBytes)
2095 return GL_TRUE;
2096
2097 if (format == GL_BGRA_INTEGER && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
2098 return GL_TRUE;
2099
2100 return GL_FALSE;
2101
2102 case MESA_FORMAT_R9G9B9E5_FLOAT:
2103 return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV &&
2104 !swapBytes;
2105
2106 case MESA_FORMAT_R11G11B10_FLOAT:
2107 return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV &&
2108 !swapBytes;
2109
2110 case MESA_FORMAT_Z_FLOAT32:
2111 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT && !swapBytes;
2112
2113 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
2114 return format == GL_DEPTH_STENCIL &&
2115 type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV && !swapBytes;
2116
2117 case MESA_FORMAT_B4G4R4X4_UNORM:
2118 case MESA_FORMAT_B5G5R5X1_UNORM:
2119 case MESA_FORMAT_R8G8B8X8_SNORM:
2120 case MESA_FORMAT_R8G8B8X8_SRGB:
2121 case MESA_FORMAT_X8B8G8R8_SRGB:
2122 case MESA_FORMAT_RGBX_UINT8:
2123 case MESA_FORMAT_RGBX_SINT8:
2124 case MESA_FORMAT_B10G10R10X2_UNORM:
2125 case MESA_FORMAT_R10G10B10X2_UNORM:
2126 case MESA_FORMAT_RGBX_UNORM16:
2127 case MESA_FORMAT_RGBX_SNORM16:
2128 case MESA_FORMAT_RGBX_FLOAT16:
2129 case MESA_FORMAT_RGBX_UINT16:
2130 case MESA_FORMAT_RGBX_SINT16:
2131 case MESA_FORMAT_RGBX_FLOAT32:
2132 case MESA_FORMAT_RGBX_UINT32:
2133 case MESA_FORMAT_RGBX_SINT32:
2134 return GL_FALSE;
2135
2136 case MESA_FORMAT_R10G10B10A2_UNORM:
2137 return format == GL_RGBA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
2138 !swapBytes;
2139
2140 case MESA_FORMAT_G8R8_SNORM:
2141 return format == GL_RG && type == GL_BYTE && !littleEndian &&
2142 !swapBytes;
2143
2144 case MESA_FORMAT_G16R16_SNORM:
2145 return format == GL_RG && type == GL_SHORT && !littleEndian &&
2146 !swapBytes;
2147
2148 case MESA_FORMAT_B8G8R8X8_SRGB:
2149 case MESA_FORMAT_X8R8G8B8_SRGB:
2150 return GL_FALSE;
2151 default:
2152 assert(_mesa_is_format_compressed(mesa_format));
2153 if (error)
2154 *error = GL_INVALID_ENUM;
2155 }
2156 return GL_FALSE;
2157 }
2158
2159