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 * Copyright (c) 2012 Intel Corporation
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 * OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28 #include "context.h"
29 #include "glformats.h"
30 #include "formats.h"
31 #include "texcompress.h"
32 #include "enums.h"
33
34 enum {
35 ZERO = 4,
36 ONE = 5
37 };
38
39 enum {
40 IDX_LUMINANCE = 0,
41 IDX_ALPHA,
42 IDX_INTENSITY,
43 IDX_LUMINANCE_ALPHA,
44 IDX_RGB,
45 IDX_RGBA,
46 IDX_RED,
47 IDX_GREEN,
48 IDX_BLUE,
49 IDX_BGR,
50 IDX_BGRA,
51 IDX_ABGR,
52 IDX_RG,
53 MAX_IDX
54 };
55
56 #define MAP1(x) MAP4(x, ZERO, ZERO, ZERO)
57 #define MAP2(x,y) MAP4(x, y, ZERO, ZERO)
58 #define MAP3(x,y,z) MAP4(x, y, z, ZERO)
59 #define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE }
60
61 static const struct {
62 GLubyte format_idx;
63 GLubyte to_rgba[6];
64 GLubyte from_rgba[6];
65 } mappings[MAX_IDX] =
66 {
67 {
68 IDX_LUMINANCE,
69 MAP4(0,0,0,ONE),
70 MAP1(0)
71 },
72
73 {
74 IDX_ALPHA,
75 MAP4(ZERO, ZERO, ZERO, 0),
76 MAP1(3)
77 },
78
79 {
80 IDX_INTENSITY,
81 MAP4(0, 0, 0, 0),
82 MAP1(0),
83 },
84
85 {
86 IDX_LUMINANCE_ALPHA,
87 MAP4(0,0,0,1),
88 MAP2(0,3)
89 },
90
91 {
92 IDX_RGB,
93 MAP4(0,1,2,ONE),
94 MAP3(0,1,2)
95 },
96
97 {
98 IDX_RGBA,
99 MAP4(0,1,2,3),
100 MAP4(0,1,2,3),
101 },
102
103 {
104 IDX_RED,
105 MAP4(0, ZERO, ZERO, ONE),
106 MAP1(0),
107 },
108
109 {
110 IDX_GREEN,
111 MAP4(ZERO, 0, ZERO, ONE),
112 MAP1(1),
113 },
114
115 {
116 IDX_BLUE,
117 MAP4(ZERO, ZERO, 0, ONE),
118 MAP1(2),
119 },
120
121 {
122 IDX_BGR,
123 MAP4(2,1,0,ONE),
124 MAP3(2,1,0)
125 },
126
127 {
128 IDX_BGRA,
129 MAP4(2,1,0,3),
130 MAP4(2,1,0,3)
131 },
132
133 {
134 IDX_ABGR,
135 MAP4(3,2,1,0),
136 MAP4(3,2,1,0)
137 },
138
139 {
140 IDX_RG,
141 MAP4(0, 1, ZERO, ONE),
142 MAP2(0, 1)
143 },
144 };
145
146 /**
147 * Convert a GL image format enum to an IDX_* value (see above).
148 */
149 static int
get_map_idx(GLenum value)150 get_map_idx(GLenum value)
151 {
152 switch (value) {
153 case GL_LUMINANCE:
154 case GL_LUMINANCE_INTEGER_EXT:
155 return IDX_LUMINANCE;
156 case GL_ALPHA:
157 case GL_ALPHA_INTEGER:
158 return IDX_ALPHA;
159 case GL_INTENSITY:
160 return IDX_INTENSITY;
161 case GL_LUMINANCE_ALPHA:
162 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
163 return IDX_LUMINANCE_ALPHA;
164 case GL_RGB:
165 case GL_RGB_INTEGER:
166 return IDX_RGB;
167 case GL_RGBA:
168 case GL_RGBA_INTEGER:
169 return IDX_RGBA;
170 case GL_RED:
171 case GL_RED_INTEGER:
172 return IDX_RED;
173 case GL_GREEN:
174 return IDX_GREEN;
175 case GL_BLUE:
176 return IDX_BLUE;
177 case GL_BGR:
178 case GL_BGR_INTEGER:
179 return IDX_BGR;
180 case GL_BGRA:
181 case GL_BGRA_INTEGER:
182 return IDX_BGRA;
183 case GL_ABGR_EXT:
184 return IDX_ABGR;
185 case GL_RG:
186 case GL_RG_INTEGER:
187 return IDX_RG;
188 default:
189 _mesa_problem(NULL, "Unexpected inFormat %s",
190 _mesa_enum_to_string(value));
191 return 0;
192 }
193 }
194
195 /**
196 * When promoting texture formats (see below) we need to compute the
197 * mapping of dest components back to source components.
198 * This function does that.
199 * \param inFormat the incoming format of the texture
200 * \param outFormat the final texture format
201 * \return map[6] a full 6-component map
202 */
203 void
_mesa_compute_component_mapping(GLenum inFormat,GLenum outFormat,GLubyte * map)204 _mesa_compute_component_mapping(GLenum inFormat, GLenum outFormat, GLubyte *map)
205 {
206 const int inFmt = get_map_idx(inFormat);
207 const int outFmt = get_map_idx(outFormat);
208 const GLubyte *in2rgba = mappings[inFmt].to_rgba;
209 const GLubyte *rgba2out = mappings[outFmt].from_rgba;
210 int i;
211
212 for (i = 0; i < 4; i++)
213 map[i] = in2rgba[rgba2out[i]];
214
215 map[ZERO] = ZERO;
216 map[ONE] = ONE;
217
218 #if 0
219 printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n",
220 inFormat, _mesa_enum_to_string(inFormat),
221 outFormat, _mesa_enum_to_string(outFormat),
222 map[0],
223 map[1],
224 map[2],
225 map[3],
226 map[4],
227 map[5]);
228 #endif
229 }
230
231 /**
232 * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
233 */
234 GLboolean
_mesa_type_is_packed(GLenum type)235 _mesa_type_is_packed(GLenum type)
236 {
237 switch (type) {
238 case GL_UNSIGNED_BYTE_3_3_2:
239 case GL_UNSIGNED_BYTE_2_3_3_REV:
240 case MESA_UNSIGNED_BYTE_4_4:
241 case GL_UNSIGNED_SHORT_5_6_5:
242 case GL_UNSIGNED_SHORT_5_6_5_REV:
243 case GL_UNSIGNED_SHORT_4_4_4_4:
244 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
245 case GL_UNSIGNED_SHORT_5_5_5_1:
246 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
247 case GL_UNSIGNED_INT_8_8_8_8:
248 case GL_UNSIGNED_INT_8_8_8_8_REV:
249 case GL_UNSIGNED_INT_10_10_10_2:
250 case GL_UNSIGNED_INT_2_10_10_10_REV:
251 case GL_UNSIGNED_SHORT_8_8_MESA:
252 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
253 case GL_UNSIGNED_INT_24_8:
254 case GL_UNSIGNED_INT_5_9_9_9_REV:
255 case GL_UNSIGNED_INT_10F_11F_11F_REV:
256 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
257 return GL_TRUE;
258 }
259
260 return GL_FALSE;
261 }
262
263
264 /**
265 * Get the size of a GL data type.
266 *
267 * \param type GL data type.
268 *
269 * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
270 * if an invalid type enum.
271 */
272 GLint
_mesa_sizeof_type(GLenum type)273 _mesa_sizeof_type(GLenum type)
274 {
275 switch (type) {
276 case GL_BITMAP:
277 return 0;
278 case GL_UNSIGNED_BYTE:
279 return sizeof(GLubyte);
280 case GL_BYTE:
281 return sizeof(GLbyte);
282 case GL_UNSIGNED_SHORT:
283 return sizeof(GLushort);
284 case GL_SHORT:
285 return sizeof(GLshort);
286 case GL_UNSIGNED_INT:
287 return sizeof(GLuint);
288 case GL_INT:
289 return sizeof(GLint);
290 case GL_FLOAT:
291 return sizeof(GLfloat);
292 case GL_DOUBLE:
293 return sizeof(GLdouble);
294 case GL_HALF_FLOAT:
295 case GL_HALF_FLOAT_OES:
296 return sizeof(GLhalfARB);
297 case GL_FIXED:
298 return sizeof(GLfixed);
299 default:
300 return -1;
301 }
302 }
303
304
305 /**
306 * Same as _mesa_sizeof_type() but also accepting the packed pixel
307 * format data types.
308 */
309 GLint
_mesa_sizeof_packed_type(GLenum type)310 _mesa_sizeof_packed_type(GLenum type)
311 {
312 switch (type) {
313 case GL_BITMAP:
314 return 0;
315 case GL_UNSIGNED_BYTE:
316 return sizeof(GLubyte);
317 case GL_BYTE:
318 return sizeof(GLbyte);
319 case GL_UNSIGNED_SHORT:
320 return sizeof(GLushort);
321 case GL_SHORT:
322 return sizeof(GLshort);
323 case GL_UNSIGNED_INT:
324 return sizeof(GLuint);
325 case GL_INT:
326 return sizeof(GLint);
327 case GL_HALF_FLOAT:
328 case GL_HALF_FLOAT_OES:
329 return sizeof(GLhalfARB);
330 case GL_FLOAT:
331 return sizeof(GLfloat);
332 case GL_UNSIGNED_BYTE_3_3_2:
333 case GL_UNSIGNED_BYTE_2_3_3_REV:
334 case MESA_UNSIGNED_BYTE_4_4:
335 return sizeof(GLubyte);
336 case GL_UNSIGNED_SHORT_5_6_5:
337 case GL_UNSIGNED_SHORT_5_6_5_REV:
338 case GL_UNSIGNED_SHORT_4_4_4_4:
339 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
340 case GL_UNSIGNED_SHORT_5_5_5_1:
341 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
342 case GL_UNSIGNED_SHORT_8_8_MESA:
343 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
344 return sizeof(GLushort);
345 case GL_UNSIGNED_INT_8_8_8_8:
346 case GL_UNSIGNED_INT_8_8_8_8_REV:
347 case GL_UNSIGNED_INT_10_10_10_2:
348 case GL_UNSIGNED_INT_2_10_10_10_REV:
349 case GL_UNSIGNED_INT_24_8:
350 case GL_UNSIGNED_INT_5_9_9_9_REV:
351 case GL_UNSIGNED_INT_10F_11F_11F_REV:
352 return sizeof(GLuint);
353 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
354 return 8;
355 default:
356 return -1;
357 }
358 }
359
360
361 /**
362 * Get the number of components in a pixel format.
363 *
364 * \param format pixel format.
365 *
366 * \return the number of components in the given format, or -1 if a bad format.
367 */
368 GLint
_mesa_components_in_format(GLenum format)369 _mesa_components_in_format(GLenum format)
370 {
371 switch (format) {
372 case GL_COLOR_INDEX:
373 case GL_STENCIL_INDEX:
374 case GL_DEPTH_COMPONENT:
375 case GL_RED:
376 case GL_RED_INTEGER:
377 case GL_GREEN:
378 case GL_GREEN_INTEGER:
379 case GL_BLUE:
380 case GL_BLUE_INTEGER:
381 case GL_ALPHA:
382 case GL_ALPHA_INTEGER:
383 case GL_LUMINANCE:
384 case GL_LUMINANCE_INTEGER_EXT:
385 case GL_INTENSITY:
386 return 1;
387
388 case GL_LUMINANCE_ALPHA:
389 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
390 case GL_RG:
391 case GL_YCBCR_MESA:
392 case GL_DEPTH_STENCIL:
393 case GL_RG_INTEGER:
394 return 2;
395
396 case GL_RGB:
397 case GL_BGR:
398 case GL_RGB_INTEGER:
399 case GL_BGR_INTEGER:
400 return 3;
401
402 case GL_RGBA:
403 case GL_BGRA:
404 case GL_ABGR_EXT:
405 case GL_RGBA_INTEGER:
406 case GL_BGRA_INTEGER:
407 return 4;
408
409 default:
410 return -1;
411 }
412 }
413
414
415 /**
416 * Get the bytes per pixel of pixel format type pair.
417 *
418 * \param format pixel format.
419 * \param type pixel type.
420 *
421 * \return bytes per pixel, or -1 if a bad format or type was given.
422 */
423 GLint
_mesa_bytes_per_pixel(GLenum format,GLenum type)424 _mesa_bytes_per_pixel(GLenum format, GLenum type)
425 {
426 GLint comps = _mesa_components_in_format(format);
427 if (comps < 0)
428 return -1;
429
430 switch (type) {
431 case GL_BITMAP:
432 return 0; /* special case */
433 case GL_BYTE:
434 case GL_UNSIGNED_BYTE:
435 return comps * sizeof(GLubyte);
436 case GL_SHORT:
437 case GL_UNSIGNED_SHORT:
438 return comps * sizeof(GLshort);
439 case GL_INT:
440 case GL_UNSIGNED_INT:
441 return comps * sizeof(GLint);
442 case GL_FLOAT:
443 return comps * sizeof(GLfloat);
444 case GL_HALF_FLOAT:
445 case GL_HALF_FLOAT_OES:
446 return comps * sizeof(GLhalfARB);
447 case GL_UNSIGNED_BYTE_3_3_2:
448 case GL_UNSIGNED_BYTE_2_3_3_REV:
449 if (format == GL_RGB || format == GL_BGR ||
450 format == GL_RGB_INTEGER || format == GL_BGR_INTEGER)
451 return sizeof(GLubyte);
452 else
453 return -1; /* error */
454 case GL_UNSIGNED_SHORT_5_6_5:
455 case GL_UNSIGNED_SHORT_5_6_5_REV:
456 if (format == GL_RGB || format == GL_BGR ||
457 format == GL_RGB_INTEGER || format == GL_BGR_INTEGER)
458 return sizeof(GLushort);
459 else
460 return -1; /* error */
461 case GL_UNSIGNED_SHORT_4_4_4_4:
462 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
463 if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
464 format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER)
465 return sizeof(GLushort);
466 else
467 return -1;
468 case GL_UNSIGNED_SHORT_5_5_5_1:
469 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
470 if (format == GL_RGBA || format == GL_BGRA ||
471 format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER)
472 return sizeof(GLushort);
473 else
474 return -1;
475 case GL_UNSIGNED_INT_8_8_8_8:
476 case GL_UNSIGNED_INT_8_8_8_8_REV:
477 if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
478 format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER ||
479 format == GL_RGB)
480 return sizeof(GLuint);
481 else
482 return -1;
483 case GL_UNSIGNED_INT_10_10_10_2:
484 case GL_UNSIGNED_INT_2_10_10_10_REV:
485 if (format == GL_RGBA || format == GL_BGRA ||
486 format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER ||
487 format == GL_RGB)
488 return sizeof(GLuint);
489 else
490 return -1;
491 case GL_UNSIGNED_SHORT_8_8_MESA:
492 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
493 if (format == GL_YCBCR_MESA)
494 return sizeof(GLushort);
495 else
496 return -1;
497 case GL_UNSIGNED_INT_24_8:
498 if (format == GL_DEPTH_COMPONENT ||
499 format == GL_DEPTH_STENCIL)
500 return sizeof(GLuint);
501 else
502 return -1;
503 case GL_UNSIGNED_INT_5_9_9_9_REV:
504 if (format == GL_RGB)
505 return sizeof(GLuint);
506 else
507 return -1;
508 case GL_UNSIGNED_INT_10F_11F_11F_REV:
509 if (format == GL_RGB)
510 return sizeof(GLuint);
511 else
512 return -1;
513 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
514 if (format == GL_DEPTH_STENCIL)
515 return 8;
516 else
517 return -1;
518 default:
519 return -1;
520 }
521 }
522
523
524 /**
525 * Test if the given format is unsized.
526 */
527 GLboolean
_mesa_is_enum_format_unsized(GLenum format)528 _mesa_is_enum_format_unsized(GLenum format)
529 {
530 switch (format) {
531 case GL_RGBA:
532 case GL_BGRA:
533 case GL_ABGR_EXT:
534 case GL_RGB:
535 case GL_BGR:
536 case GL_RG:
537 case GL_RED:
538 case GL_GREEN:
539 case GL_BLUE:
540 case GL_ALPHA:
541 case GL_INTENSITY:
542 case GL_LUMINANCE:
543 case GL_LUMINANCE_ALPHA:
544
545 case GL_SRGB:
546 case GL_SRGB_ALPHA:
547 case GL_SLUMINANCE:
548 case GL_SLUMINANCE_ALPHA:
549
550 case GL_RGBA_SNORM:
551 case GL_RGB_SNORM:
552 case GL_RG_SNORM:
553 case GL_RED_SNORM:
554 case GL_ALPHA_SNORM:
555 case GL_INTENSITY_SNORM:
556 case GL_LUMINANCE_SNORM:
557 case GL_LUMINANCE_ALPHA_SNORM:
558
559 case GL_RED_INTEGER:
560 case GL_GREEN_INTEGER:
561 case GL_BLUE_INTEGER:
562 case GL_ALPHA_INTEGER:
563 case GL_RGB_INTEGER:
564 case GL_RGBA_INTEGER:
565 case GL_BGR_INTEGER:
566 case GL_BGRA_INTEGER:
567 case GL_RG_INTEGER:
568 case GL_LUMINANCE_INTEGER_EXT:
569 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
570
571 case GL_DEPTH_COMPONENT:
572 case GL_DEPTH_STENCIL:
573 case GL_STENCIL_INDEX:
574 return GL_TRUE;
575 default:
576 return GL_FALSE;
577 }
578 }
579
580 /**
581 * Test if the given format is a UNORM (unsigned-normalized) format.
582 */
583 GLboolean
_mesa_is_enum_format_unorm(GLenum format)584 _mesa_is_enum_format_unorm(GLenum format)
585 {
586 switch(format) {
587 case GL_RED:
588 case GL_GREEN:
589 case GL_BLUE:
590 case GL_ALPHA:
591 case GL_ALPHA4:
592 case GL_ALPHA8:
593 case GL_ALPHA12:
594 case GL_ALPHA16:
595 case 1:
596 case GL_LUMINANCE:
597 case GL_SLUMINANCE:
598 case GL_LUMINANCE4:
599 case GL_LUMINANCE8:
600 case GL_LUMINANCE12:
601 case GL_LUMINANCE16:
602 case 2:
603 case GL_LUMINANCE_ALPHA:
604 case GL_SLUMINANCE_ALPHA:
605 case GL_LUMINANCE4_ALPHA4:
606 case GL_LUMINANCE6_ALPHA2:
607 case GL_LUMINANCE8_ALPHA8:
608 case GL_LUMINANCE12_ALPHA4:
609 case GL_LUMINANCE12_ALPHA12:
610 case GL_LUMINANCE16_ALPHA16:
611 case GL_INTENSITY:
612 case GL_INTENSITY4:
613 case GL_INTENSITY8:
614 case GL_INTENSITY12:
615 case GL_INTENSITY16:
616 case GL_R8:
617 case GL_R16:
618 case GL_RG:
619 case GL_RG8:
620 case GL_RG16:
621 case 3:
622 case GL_RGB:
623 case GL_BGR:
624 case GL_SRGB:
625 case GL_R3_G3_B2:
626 case GL_RGB4:
627 case GL_RGB5:
628 case GL_RGB565:
629 case GL_RGB8:
630 case GL_RGB10:
631 case GL_RGB12:
632 case GL_RGB16:
633 case 4:
634 case GL_ABGR_EXT:
635 case GL_RGBA:
636 case GL_BGRA:
637 case GL_SRGB_ALPHA:
638 case GL_RGBA2:
639 case GL_RGBA4:
640 case GL_RGB5_A1:
641 case GL_RGBA8:
642 case GL_RGB10_A2:
643 case GL_RGBA12:
644 case GL_RGBA16:
645 return GL_TRUE;
646 default:
647 return GL_FALSE;
648 }
649 }
650
651 /**
652 * Test if the given format is a SNORM (signed-normalized) format.
653 */
654 GLboolean
_mesa_is_enum_format_snorm(GLenum format)655 _mesa_is_enum_format_snorm(GLenum format)
656 {
657 switch (format) {
658 /* signed, normalized texture formats */
659 case GL_RED_SNORM:
660 case GL_R8_SNORM:
661 case GL_R16_SNORM:
662 case GL_RG_SNORM:
663 case GL_RG8_SNORM:
664 case GL_RG16_SNORM:
665 case GL_RGB_SNORM:
666 case GL_RGB8_SNORM:
667 case GL_RGB16_SNORM:
668 case GL_RGBA_SNORM:
669 case GL_RGBA8_SNORM:
670 case GL_RGBA16_SNORM:
671 case GL_ALPHA_SNORM:
672 case GL_ALPHA8_SNORM:
673 case GL_ALPHA16_SNORM:
674 case GL_LUMINANCE_SNORM:
675 case GL_LUMINANCE8_SNORM:
676 case GL_LUMINANCE16_SNORM:
677 case GL_LUMINANCE_ALPHA_SNORM:
678 case GL_LUMINANCE8_ALPHA8_SNORM:
679 case GL_LUMINANCE16_ALPHA16_SNORM:
680 case GL_INTENSITY_SNORM:
681 case GL_INTENSITY8_SNORM:
682 case GL_INTENSITY16_SNORM:
683 return GL_TRUE;
684 default:
685 return GL_FALSE;
686 }
687 }
688
689 /**
690 * Test if the given format is an integer (non-normalized) format.
691 */
692 GLboolean
_mesa_is_enum_format_unsigned_int(GLenum format)693 _mesa_is_enum_format_unsigned_int(GLenum format)
694 {
695 switch (format) {
696 /* specific integer formats */
697 case GL_RGBA32UI:
698 case GL_RGB32UI:
699 case GL_RG32UI:
700 case GL_R32UI:
701 case GL_ALPHA32UI_EXT:
702 case GL_INTENSITY32UI_EXT:
703 case GL_LUMINANCE32UI_EXT:
704 case GL_LUMINANCE_ALPHA32UI_EXT:
705 case GL_RGBA16UI:
706 case GL_RGB16UI:
707 case GL_RG16UI:
708 case GL_R16UI:
709 case GL_ALPHA16UI_EXT:
710 case GL_INTENSITY16UI_EXT:
711 case GL_LUMINANCE16UI_EXT:
712 case GL_LUMINANCE_ALPHA16UI_EXT:
713 case GL_RGBA8UI:
714 case GL_RGB8UI:
715 case GL_RG8UI:
716 case GL_R8UI:
717 case GL_ALPHA8UI_EXT:
718 case GL_INTENSITY8UI_EXT:
719 case GL_LUMINANCE8UI_EXT:
720 case GL_LUMINANCE_ALPHA8UI_EXT:
721 case GL_RGB10_A2UI:
722 return GL_TRUE;
723 default:
724 return GL_FALSE;
725 }
726 }
727
728
729 /**
730 * Test if the given format is an integer (non-normalized) format.
731 */
732 GLboolean
_mesa_is_enum_format_signed_int(GLenum format)733 _mesa_is_enum_format_signed_int(GLenum format)
734 {
735 switch (format) {
736 /* generic integer formats */
737 case GL_RED_INTEGER:
738 case GL_GREEN_INTEGER:
739 case GL_BLUE_INTEGER:
740 case GL_ALPHA_INTEGER:
741 case GL_RGB_INTEGER:
742 case GL_RGBA_INTEGER:
743 case GL_BGR_INTEGER:
744 case GL_BGRA_INTEGER:
745 case GL_LUMINANCE_INTEGER_EXT:
746 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
747 case GL_RG_INTEGER:
748 /* specific integer formats */
749 case GL_RGBA32I:
750 case GL_RGB32I:
751 case GL_RG32I:
752 case GL_R32I:
753 case GL_ALPHA32I_EXT:
754 case GL_INTENSITY32I_EXT:
755 case GL_LUMINANCE32I_EXT:
756 case GL_LUMINANCE_ALPHA32I_EXT:
757 case GL_RGBA16I:
758 case GL_RGB16I:
759 case GL_RG16I:
760 case GL_R16I:
761 case GL_ALPHA16I_EXT:
762 case GL_INTENSITY16I_EXT:
763 case GL_LUMINANCE16I_EXT:
764 case GL_LUMINANCE_ALPHA16I_EXT:
765 case GL_RGBA8I:
766 case GL_RGB8I:
767 case GL_RG8I:
768 case GL_R8I:
769 case GL_ALPHA8I_EXT:
770 case GL_INTENSITY8I_EXT:
771 case GL_LUMINANCE8I_EXT:
772 case GL_LUMINANCE_ALPHA8I_EXT:
773 return GL_TRUE;
774 default:
775 return GL_FALSE;
776 }
777 }
778
779 /**
780 * Test if the given format is an ASTC 2D format.
781 */
782 static bool
is_astc_2d_format(GLenum internalFormat)783 is_astc_2d_format(GLenum internalFormat)
784 {
785 switch (internalFormat) {
786 case GL_COMPRESSED_RGBA_ASTC_4x4:
787 case GL_COMPRESSED_RGBA_ASTC_5x4:
788 case GL_COMPRESSED_RGBA_ASTC_5x5:
789 case GL_COMPRESSED_RGBA_ASTC_6x5:
790 case GL_COMPRESSED_RGBA_ASTC_6x6:
791 case GL_COMPRESSED_RGBA_ASTC_8x5:
792 case GL_COMPRESSED_RGBA_ASTC_8x6:
793 case GL_COMPRESSED_RGBA_ASTC_8x8:
794 case GL_COMPRESSED_RGBA_ASTC_10x5:
795 case GL_COMPRESSED_RGBA_ASTC_10x6:
796 case GL_COMPRESSED_RGBA_ASTC_10x8:
797 case GL_COMPRESSED_RGBA_ASTC_10x10:
798 case GL_COMPRESSED_RGBA_ASTC_12x10:
799 case GL_COMPRESSED_RGBA_ASTC_12x12:
800 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4:
801 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4:
802 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5:
803 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5:
804 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6:
805 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5:
806 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6:
807 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8:
808 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5:
809 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6:
810 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8:
811 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10:
812 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10:
813 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12:
814 return true;
815 default:
816 return false;
817 }
818 }
819
820 /**
821 * Test if the given format is an ASTC 3D format.
822 */
823 static bool
is_astc_3d_format(GLenum internalFormat)824 is_astc_3d_format(GLenum internalFormat)
825 {
826 switch (internalFormat) {
827 case GL_COMPRESSED_RGBA_ASTC_3x3x3_OES:
828 case GL_COMPRESSED_RGBA_ASTC_4x3x3_OES:
829 case GL_COMPRESSED_RGBA_ASTC_4x4x3_OES:
830 case GL_COMPRESSED_RGBA_ASTC_4x4x4_OES:
831 case GL_COMPRESSED_RGBA_ASTC_5x4x4_OES:
832 case GL_COMPRESSED_RGBA_ASTC_5x5x4_OES:
833 case GL_COMPRESSED_RGBA_ASTC_5x5x5_OES:
834 case GL_COMPRESSED_RGBA_ASTC_6x5x5_OES:
835 case GL_COMPRESSED_RGBA_ASTC_6x6x5_OES:
836 case GL_COMPRESSED_RGBA_ASTC_6x6x6_OES:
837 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES:
838 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES:
839 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES:
840 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES:
841 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES:
842 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES:
843 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES:
844 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES:
845 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES:
846 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES:
847 return true;
848 default:
849 return false;
850 }
851 }
852
853 /**
854 * Test if the given format is an ASTC format.
855 */
856 GLboolean
_mesa_is_astc_format(GLenum internalFormat)857 _mesa_is_astc_format(GLenum internalFormat)
858 {
859 return is_astc_2d_format(internalFormat) ||
860 is_astc_3d_format(internalFormat);
861 }
862
863 /**
864 * Test if the given format is an ETC2 format.
865 */
866 GLboolean
_mesa_is_etc2_format(GLenum internalFormat)867 _mesa_is_etc2_format(GLenum internalFormat)
868 {
869 switch (internalFormat) {
870 case GL_COMPRESSED_RGB8_ETC2:
871 case GL_COMPRESSED_SRGB8_ETC2:
872 case GL_COMPRESSED_RGBA8_ETC2_EAC:
873 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
874 case GL_COMPRESSED_R11_EAC:
875 case GL_COMPRESSED_RG11_EAC:
876 case GL_COMPRESSED_SIGNED_R11_EAC:
877 case GL_COMPRESSED_SIGNED_RG11_EAC:
878 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
879 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
880 return true;
881 default:
882 return false;
883 }
884 }
885
886 /**
887 * Test if the given format is an integer (non-normalized) format.
888 */
889 GLboolean
_mesa_is_enum_format_integer(GLenum format)890 _mesa_is_enum_format_integer(GLenum format)
891 {
892 return _mesa_is_enum_format_unsigned_int(format) ||
893 _mesa_is_enum_format_signed_int(format);
894 }
895
896
897 GLboolean
_mesa_is_type_unsigned(GLenum type)898 _mesa_is_type_unsigned(GLenum type)
899 {
900 switch (type) {
901 case GL_UNSIGNED_INT:
902 case GL_UNSIGNED_INT_8_8_8_8:
903 case GL_UNSIGNED_INT_8_8_8_8_REV:
904 case GL_UNSIGNED_INT_10_10_10_2:
905 case GL_UNSIGNED_INT_2_10_10_10_REV:
906
907 case GL_UNSIGNED_SHORT:
908 case GL_UNSIGNED_SHORT_4_4_4_4:
909 case GL_UNSIGNED_SHORT_5_5_5_1:
910 case GL_UNSIGNED_SHORT_5_6_5:
911 case GL_UNSIGNED_SHORT_5_6_5_REV:
912 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
913 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
914 case GL_UNSIGNED_SHORT_8_8_MESA:
915 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
916
917 case GL_UNSIGNED_BYTE:
918 case GL_UNSIGNED_BYTE_3_3_2:
919 case GL_UNSIGNED_BYTE_2_3_3_REV:
920 return GL_TRUE;
921
922 default:
923 return GL_FALSE;
924 }
925 }
926
927
928 /**
929 * Test if the given image format is a color/RGBA format (i.e., not color
930 * index, depth, stencil, etc).
931 * \param format the image format value (may by an internal texture format)
932 * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
933 */
934 GLboolean
_mesa_is_color_format(GLenum format)935 _mesa_is_color_format(GLenum format)
936 {
937 switch (format) {
938 case GL_RED:
939 case GL_GREEN:
940 case GL_BLUE:
941 case GL_ALPHA:
942 case GL_ALPHA4:
943 case GL_ALPHA8:
944 case GL_ALPHA12:
945 case GL_ALPHA16:
946 case 1:
947 case GL_LUMINANCE:
948 case GL_LUMINANCE4:
949 case GL_LUMINANCE8:
950 case GL_LUMINANCE12:
951 case GL_LUMINANCE16:
952 case 2:
953 case GL_LUMINANCE_ALPHA:
954 case GL_LUMINANCE4_ALPHA4:
955 case GL_LUMINANCE6_ALPHA2:
956 case GL_LUMINANCE8_ALPHA8:
957 case GL_LUMINANCE12_ALPHA4:
958 case GL_LUMINANCE12_ALPHA12:
959 case GL_LUMINANCE16_ALPHA16:
960 case GL_INTENSITY:
961 case GL_INTENSITY4:
962 case GL_INTENSITY8:
963 case GL_INTENSITY12:
964 case GL_INTENSITY16:
965 case GL_R8:
966 case GL_R16:
967 case GL_RG:
968 case GL_RG8:
969 case GL_RG16:
970 case 3:
971 case GL_RGB:
972 case GL_BGR:
973 case GL_R3_G3_B2:
974 case GL_RGB4:
975 case GL_RGB5:
976 case GL_RGB565:
977 case GL_RGB8:
978 case GL_RGB10:
979 case GL_RGB12:
980 case GL_RGB16:
981 case 4:
982 case GL_ABGR_EXT:
983 case GL_RGBA:
984 case GL_BGRA:
985 case GL_RGBA2:
986 case GL_RGBA4:
987 case GL_RGB5_A1:
988 case GL_RGBA8:
989 case GL_RGB10_A2:
990 case GL_RGBA12:
991 case GL_RGBA16:
992 /* float texture formats */
993 case GL_ALPHA16F_ARB:
994 case GL_ALPHA32F_ARB:
995 case GL_LUMINANCE16F_ARB:
996 case GL_LUMINANCE32F_ARB:
997 case GL_LUMINANCE_ALPHA16F_ARB:
998 case GL_LUMINANCE_ALPHA32F_ARB:
999 case GL_INTENSITY16F_ARB:
1000 case GL_INTENSITY32F_ARB:
1001 case GL_R16F:
1002 case GL_R32F:
1003 case GL_RG16F:
1004 case GL_RG32F:
1005 case GL_RGB16F_ARB:
1006 case GL_RGB32F_ARB:
1007 case GL_RGBA16F_ARB:
1008 case GL_RGBA32F_ARB:
1009 /* compressed formats */
1010 case GL_COMPRESSED_ALPHA:
1011 case GL_COMPRESSED_LUMINANCE:
1012 case GL_COMPRESSED_LUMINANCE_ALPHA:
1013 case GL_COMPRESSED_INTENSITY:
1014 case GL_COMPRESSED_RED:
1015 case GL_COMPRESSED_RG:
1016 case GL_COMPRESSED_RGB:
1017 case GL_COMPRESSED_RGBA:
1018 case GL_RGB_S3TC:
1019 case GL_RGB4_S3TC:
1020 case GL_RGBA_S3TC:
1021 case GL_RGBA4_S3TC:
1022 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
1023 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
1024 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
1025 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
1026 case GL_COMPRESSED_RGB_FXT1_3DFX:
1027 case GL_COMPRESSED_RGBA_FXT1_3DFX:
1028 case GL_SR8_EXT:
1029 case GL_SRG8_EXT:
1030 case GL_SRGB:
1031 case GL_SRGB8:
1032 case GL_SRGB_ALPHA:
1033 case GL_SRGB8_ALPHA8:
1034 case GL_SLUMINANCE_ALPHA:
1035 case GL_SLUMINANCE8_ALPHA8:
1036 case GL_SLUMINANCE:
1037 case GL_SLUMINANCE8:
1038 case GL_COMPRESSED_SRGB:
1039 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
1040 case GL_COMPRESSED_SRGB_ALPHA:
1041 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
1042 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
1043 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
1044 case GL_COMPRESSED_SLUMINANCE:
1045 case GL_COMPRESSED_SLUMINANCE_ALPHA:
1046 case GL_COMPRESSED_RED_RGTC1:
1047 case GL_COMPRESSED_SIGNED_RED_RGTC1:
1048 case GL_COMPRESSED_RG_RGTC2:
1049 case GL_COMPRESSED_SIGNED_RG_RGTC2:
1050 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
1051 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
1052 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
1053 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
1054 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
1055 case GL_ETC1_RGB8_OES:
1056 case GL_COMPRESSED_RGB8_ETC2:
1057 case GL_COMPRESSED_SRGB8_ETC2:
1058 case GL_COMPRESSED_RGBA8_ETC2_EAC:
1059 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
1060 case GL_COMPRESSED_R11_EAC:
1061 case GL_COMPRESSED_RG11_EAC:
1062 case GL_COMPRESSED_SIGNED_R11_EAC:
1063 case GL_COMPRESSED_SIGNED_RG11_EAC:
1064 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
1065 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
1066 case GL_COMPRESSED_RGBA_BPTC_UNORM:
1067 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
1068 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
1069 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
1070 case GL_COMPRESSED_RGBA_ASTC_4x4:
1071 case GL_COMPRESSED_RGBA_ASTC_5x4:
1072 case GL_COMPRESSED_RGBA_ASTC_5x5:
1073 case GL_COMPRESSED_RGBA_ASTC_6x5:
1074 case GL_COMPRESSED_RGBA_ASTC_6x6:
1075 case GL_COMPRESSED_RGBA_ASTC_8x5:
1076 case GL_COMPRESSED_RGBA_ASTC_8x6:
1077 case GL_COMPRESSED_RGBA_ASTC_8x8:
1078 case GL_COMPRESSED_RGBA_ASTC_10x5:
1079 case GL_COMPRESSED_RGBA_ASTC_10x6:
1080 case GL_COMPRESSED_RGBA_ASTC_10x8:
1081 case GL_COMPRESSED_RGBA_ASTC_10x10:
1082 case GL_COMPRESSED_RGBA_ASTC_12x10:
1083 case GL_COMPRESSED_RGBA_ASTC_12x12:
1084 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4:
1085 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4:
1086 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5:
1087 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5:
1088 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6:
1089 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5:
1090 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6:
1091 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8:
1092 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5:
1093 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6:
1094 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8:
1095 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10:
1096 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10:
1097 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12:
1098 case GL_ATC_RGB_AMD:
1099 case GL_ATC_RGBA_EXPLICIT_ALPHA_AMD:
1100 case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
1101 /* generic integer formats */
1102 case GL_RED_INTEGER:
1103 case GL_GREEN_INTEGER:
1104 case GL_BLUE_INTEGER:
1105 case GL_ALPHA_INTEGER:
1106 case GL_RGB_INTEGER:
1107 case GL_RGBA_INTEGER:
1108 case GL_BGR_INTEGER:
1109 case GL_BGRA_INTEGER:
1110 case GL_RG_INTEGER:
1111 case GL_LUMINANCE_INTEGER_EXT:
1112 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1113 /* sized integer formats */
1114 case GL_RGBA32UI:
1115 case GL_RGB32UI:
1116 case GL_RG32UI:
1117 case GL_R32UI:
1118 case GL_ALPHA32UI_EXT:
1119 case GL_INTENSITY32UI_EXT:
1120 case GL_LUMINANCE32UI_EXT:
1121 case GL_LUMINANCE_ALPHA32UI_EXT:
1122 case GL_RGBA16UI:
1123 case GL_RGB16UI:
1124 case GL_RG16UI:
1125 case GL_R16UI:
1126 case GL_ALPHA16UI_EXT:
1127 case GL_INTENSITY16UI_EXT:
1128 case GL_LUMINANCE16UI_EXT:
1129 case GL_LUMINANCE_ALPHA16UI_EXT:
1130 case GL_RGBA8UI:
1131 case GL_RGB8UI:
1132 case GL_RG8UI:
1133 case GL_R8UI:
1134 case GL_ALPHA8UI_EXT:
1135 case GL_INTENSITY8UI_EXT:
1136 case GL_LUMINANCE8UI_EXT:
1137 case GL_LUMINANCE_ALPHA8UI_EXT:
1138 case GL_RGBA32I:
1139 case GL_RGB32I:
1140 case GL_RG32I:
1141 case GL_R32I:
1142 case GL_ALPHA32I_EXT:
1143 case GL_INTENSITY32I_EXT:
1144 case GL_LUMINANCE32I_EXT:
1145 case GL_LUMINANCE_ALPHA32I_EXT:
1146 case GL_RGBA16I:
1147 case GL_RGB16I:
1148 case GL_RG16I:
1149 case GL_R16I:
1150 case GL_ALPHA16I_EXT:
1151 case GL_INTENSITY16I_EXT:
1152 case GL_LUMINANCE16I_EXT:
1153 case GL_LUMINANCE_ALPHA16I_EXT:
1154 case GL_RGBA8I:
1155 case GL_RGB8I:
1156 case GL_RG8I:
1157 case GL_R8I:
1158 case GL_ALPHA8I_EXT:
1159 case GL_INTENSITY8I_EXT:
1160 case GL_LUMINANCE8I_EXT:
1161 case GL_LUMINANCE_ALPHA8I_EXT:
1162 /* signed, normalized texture formats */
1163 case GL_RED_SNORM:
1164 case GL_R8_SNORM:
1165 case GL_R16_SNORM:
1166 case GL_RG_SNORM:
1167 case GL_RG8_SNORM:
1168 case GL_RG16_SNORM:
1169 case GL_RGB_SNORM:
1170 case GL_RGB8_SNORM:
1171 case GL_RGB16_SNORM:
1172 case GL_RGBA_SNORM:
1173 case GL_RGBA8_SNORM:
1174 case GL_RGBA16_SNORM:
1175 case GL_ALPHA_SNORM:
1176 case GL_ALPHA8_SNORM:
1177 case GL_ALPHA16_SNORM:
1178 case GL_LUMINANCE_SNORM:
1179 case GL_LUMINANCE8_SNORM:
1180 case GL_LUMINANCE16_SNORM:
1181 case GL_LUMINANCE_ALPHA_SNORM:
1182 case GL_LUMINANCE8_ALPHA8_SNORM:
1183 case GL_LUMINANCE16_ALPHA16_SNORM:
1184 case GL_INTENSITY_SNORM:
1185 case GL_INTENSITY8_SNORM:
1186 case GL_INTENSITY16_SNORM:
1187 case GL_RGB9_E5:
1188 case GL_R11F_G11F_B10F:
1189 case GL_RGB10_A2UI:
1190 return GL_TRUE;
1191 case GL_YCBCR_MESA: /* not considered to be RGB */
1192 FALLTHROUGH;
1193 default:
1194 return GL_FALSE;
1195 }
1196 }
1197
1198
1199 /**
1200 * Test if the given image format is a depth component format.
1201 */
1202 GLboolean
_mesa_is_depth_format(GLenum format)1203 _mesa_is_depth_format(GLenum format)
1204 {
1205 switch (format) {
1206 case GL_DEPTH_COMPONENT:
1207 case GL_DEPTH_COMPONENT16:
1208 case GL_DEPTH_COMPONENT24:
1209 case GL_DEPTH_COMPONENT32:
1210 case GL_DEPTH_COMPONENT32F:
1211 return GL_TRUE;
1212 default:
1213 return GL_FALSE;
1214 }
1215 }
1216
1217
1218 /**
1219 * Test if the given image format is a stencil format.
1220 */
1221 GLboolean
_mesa_is_stencil_format(GLenum format)1222 _mesa_is_stencil_format(GLenum format)
1223 {
1224 switch (format) {
1225 case GL_STENCIL_INDEX:
1226 return GL_TRUE;
1227 default:
1228 return GL_FALSE;
1229 }
1230 }
1231
1232
1233 /**
1234 * Test if the given image format is a YCbCr format.
1235 */
1236 GLboolean
_mesa_is_ycbcr_format(GLenum format)1237 _mesa_is_ycbcr_format(GLenum format)
1238 {
1239 switch (format) {
1240 case GL_YCBCR_MESA:
1241 return GL_TRUE;
1242 default:
1243 return GL_FALSE;
1244 }
1245 }
1246
1247
1248 /**
1249 * Test if the given image format is a depth+stencil format.
1250 */
1251 GLboolean
_mesa_is_depthstencil_format(GLenum format)1252 _mesa_is_depthstencil_format(GLenum format)
1253 {
1254 switch (format) {
1255 case GL_DEPTH24_STENCIL8:
1256 case GL_DEPTH_STENCIL:
1257 case GL_DEPTH32F_STENCIL8:
1258 return GL_TRUE;
1259 default:
1260 return GL_FALSE;
1261 }
1262 }
1263
1264
1265 /**
1266 * Test if the given image format is a depth or stencil format.
1267 */
1268 GLboolean
_mesa_is_depth_or_stencil_format(GLenum format)1269 _mesa_is_depth_or_stencil_format(GLenum format)
1270 {
1271 switch (format) {
1272 case GL_DEPTH_COMPONENT:
1273 case GL_DEPTH_COMPONENT16:
1274 case GL_DEPTH_COMPONENT24:
1275 case GL_DEPTH_COMPONENT32:
1276 case GL_STENCIL_INDEX:
1277 case GL_STENCIL_INDEX1:
1278 case GL_STENCIL_INDEX4:
1279 case GL_STENCIL_INDEX8:
1280 case GL_STENCIL_INDEX16:
1281 case GL_DEPTH_STENCIL:
1282 case GL_DEPTH24_STENCIL8:
1283 case GL_DEPTH_COMPONENT32F:
1284 case GL_DEPTH32F_STENCIL8:
1285 return GL_TRUE;
1286 default:
1287 return GL_FALSE;
1288 }
1289 }
1290
1291 /**
1292 * Test if the given image format has a floating-point depth component.
1293 */
1294 GLboolean
_mesa_has_depth_float_channel(GLenum internalFormat)1295 _mesa_has_depth_float_channel(GLenum internalFormat)
1296 {
1297 return internalFormat == GL_DEPTH32F_STENCIL8 ||
1298 internalFormat == GL_DEPTH_COMPONENT32F;
1299 }
1300
1301 /**
1302 * Test if an image format is a supported compressed format.
1303 * \param format the internal format token provided by the user.
1304 * \return GL_TRUE if compressed, GL_FALSE if uncompressed
1305 */
1306 GLboolean
_mesa_is_compressed_format(const struct gl_context * ctx,GLenum format)1307 _mesa_is_compressed_format(const struct gl_context *ctx, GLenum format)
1308 {
1309 mesa_format m_format = _mesa_glenum_to_compressed_format(format);
1310
1311 /* Some formats in this switch have an equivalent mesa_format_layout
1312 * to the compressed formats in the layout switch below and thus
1313 * must be handled first.
1314 */
1315 switch (format) {
1316 case GL_RGB_S3TC:
1317 case GL_RGB4_S3TC:
1318 case GL_RGBA_S3TC:
1319 case GL_RGBA4_S3TC:
1320 return _mesa_has_S3_s3tc(ctx);
1321 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
1322 return _mesa_has_ATI_texture_compression_3dc(ctx);
1323 case GL_PALETTE4_RGB8_OES:
1324 case GL_PALETTE4_RGBA8_OES:
1325 case GL_PALETTE4_R5_G6_B5_OES:
1326 case GL_PALETTE4_RGBA4_OES:
1327 case GL_PALETTE4_RGB5_A1_OES:
1328 case GL_PALETTE8_RGB8_OES:
1329 case GL_PALETTE8_RGBA8_OES:
1330 case GL_PALETTE8_R5_G6_B5_OES:
1331 case GL_PALETTE8_RGBA4_OES:
1332 case GL_PALETTE8_RGB5_A1_OES:
1333 return _mesa_is_gles1(ctx);
1334 }
1335
1336 switch (_mesa_get_format_layout(m_format)) {
1337 case MESA_FORMAT_LAYOUT_S3TC:
1338 if (!_mesa_is_format_srgb(m_format)) {
1339 return _mesa_has_EXT_texture_compression_s3tc(ctx) ||
1340 (_mesa_has_EXT_texture_compression_dxt1(ctx) &&
1341 (m_format == PIPE_FORMAT_DXT1_RGB ||
1342 m_format == PIPE_FORMAT_DXT1_RGBA));
1343 } else {
1344 return (_mesa_has_EXT_texture_sRGB(ctx) ||
1345 _mesa_has_EXT_texture_compression_s3tc_srgb(ctx)) &&
1346 _mesa_has_EXT_texture_compression_s3tc(ctx);
1347 }
1348 case MESA_FORMAT_LAYOUT_FXT1:
1349 return _mesa_has_3DFX_texture_compression_FXT1(ctx);
1350 case MESA_FORMAT_LAYOUT_RGTC:
1351 return _mesa_has_ARB_texture_compression_rgtc(ctx) ||
1352 _mesa_has_EXT_texture_compression_rgtc(ctx);
1353 case MESA_FORMAT_LAYOUT_LATC:
1354 return _mesa_has_EXT_texture_compression_latc(ctx);
1355 case MESA_FORMAT_LAYOUT_ETC1:
1356 return _mesa_has_OES_compressed_ETC1_RGB8_texture(ctx);
1357 case MESA_FORMAT_LAYOUT_ETC2:
1358 return _mesa_is_gles3_compatible(ctx);
1359 case MESA_FORMAT_LAYOUT_BPTC:
1360 return _mesa_has_ARB_texture_compression_bptc(ctx) ||
1361 _mesa_has_EXT_texture_compression_bptc(ctx);
1362 case MESA_FORMAT_LAYOUT_ASTC:
1363 return _mesa_has_KHR_texture_compression_astc_ldr(ctx);
1364 case MESA_FORMAT_LAYOUT_ATC:
1365 return _mesa_has_AMD_compressed_ATC_texture(ctx);
1366 default:
1367 return GL_FALSE;
1368 }
1369 }
1370
1371 /**
1372 * Test if the given format represents an sRGB format.
1373 * \param format the GL format (can be an internal format)
1374 * \return GL_TRUE if format is sRGB, GL_FALSE otherwise
1375 */
1376 GLboolean
_mesa_is_srgb_format(GLenum format)1377 _mesa_is_srgb_format(GLenum format)
1378 {
1379 switch (format) {
1380 case GL_SR8_EXT:
1381 case GL_SRG8_EXT:
1382 case GL_SRGB:
1383 case GL_SRGB8:
1384 case GL_SRGB_ALPHA:
1385 case GL_SRGB8_ALPHA8:
1386 case GL_COMPRESSED_SRGB:
1387 case GL_COMPRESSED_SRGB_ALPHA:
1388 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
1389 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
1390 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
1391 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
1392 case GL_COMPRESSED_SRGB8_ETC2:
1393 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
1394 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
1395 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
1396 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
1397 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
1398 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
1399 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
1400 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
1401 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
1402 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
1403 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
1404 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
1405 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
1406 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
1407 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
1408 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
1409 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
1410 return GL_TRUE;
1411 default:
1412 break;
1413 }
1414
1415 return GL_FALSE;
1416 }
1417
1418 /**
1419 * Convert various unpack formats to the corresponding base format.
1420 */
1421 GLenum
_mesa_unpack_format_to_base_format(GLenum format)1422 _mesa_unpack_format_to_base_format(GLenum format)
1423 {
1424 switch(format) {
1425 case GL_RED_INTEGER:
1426 return GL_RED;
1427 case GL_GREEN_INTEGER:
1428 return GL_GREEN;
1429 case GL_BLUE_INTEGER:
1430 return GL_BLUE;
1431 case GL_ALPHA_INTEGER:
1432 return GL_ALPHA;
1433 case GL_RG_INTEGER:
1434 return GL_RG;
1435 case GL_RGB_INTEGER:
1436 return GL_RGB;
1437 case GL_RGBA_INTEGER:
1438 return GL_RGBA;
1439 case GL_BGR_INTEGER:
1440 return GL_BGR;
1441 case GL_BGRA_INTEGER:
1442 return GL_BGRA;
1443 case GL_LUMINANCE_INTEGER_EXT:
1444 return GL_LUMINANCE;
1445 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1446 return GL_LUMINANCE_ALPHA;
1447 case GL_RED:
1448 case GL_GREEN:
1449 case GL_BLUE:
1450 case GL_RG:
1451 case GL_RGB:
1452 case GL_RGBA:
1453 case GL_BGR:
1454 case GL_BGRA:
1455 case GL_ALPHA:
1456 case GL_LUMINANCE:
1457 case GL_LUMINANCE_ALPHA:
1458 default:
1459 return format;
1460 }
1461 }
1462
1463 /**
1464 * Convert various base formats to the corresponding integer format.
1465 */
1466 GLenum
_mesa_base_format_to_integer_format(GLenum format)1467 _mesa_base_format_to_integer_format(GLenum format)
1468 {
1469 switch(format) {
1470 case GL_RED:
1471 return GL_RED_INTEGER;
1472 case GL_GREEN:
1473 return GL_GREEN_INTEGER;
1474 case GL_BLUE:
1475 return GL_BLUE_INTEGER;
1476 case GL_RG:
1477 return GL_RG_INTEGER;
1478 case GL_RGB:
1479 return GL_RGB_INTEGER;
1480 case GL_RGBA:
1481 return GL_RGBA_INTEGER;
1482 case GL_BGR:
1483 return GL_BGR_INTEGER;
1484 case GL_BGRA:
1485 return GL_BGRA_INTEGER;
1486 case GL_ALPHA:
1487 return GL_ALPHA_INTEGER;
1488 case GL_LUMINANCE:
1489 return GL_LUMINANCE_INTEGER_EXT;
1490 case GL_LUMINANCE_ALPHA:
1491 return GL_LUMINANCE_ALPHA_INTEGER_EXT;
1492 }
1493
1494 return format;
1495 }
1496
1497
1498 /**
1499 * Does the given base texture/renderbuffer format have the channel
1500 * named by 'pname'?
1501 */
1502 GLboolean
_mesa_base_format_has_channel(GLenum base_format,GLenum pname)1503 _mesa_base_format_has_channel(GLenum base_format, GLenum pname)
1504 {
1505 switch (pname) {
1506 case GL_TEXTURE_RED_SIZE:
1507 case GL_TEXTURE_RED_TYPE:
1508 case GL_RENDERBUFFER_RED_SIZE:
1509 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1510 case GL_INTERNALFORMAT_RED_SIZE:
1511 case GL_INTERNALFORMAT_RED_TYPE:
1512 if (base_format == GL_RED ||
1513 base_format == GL_RG ||
1514 base_format == GL_RGB ||
1515 base_format == GL_RGBA) {
1516 return GL_TRUE;
1517 }
1518 return GL_FALSE;
1519 case GL_TEXTURE_GREEN_SIZE:
1520 case GL_TEXTURE_GREEN_TYPE:
1521 case GL_RENDERBUFFER_GREEN_SIZE:
1522 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1523 case GL_INTERNALFORMAT_GREEN_SIZE:
1524 case GL_INTERNALFORMAT_GREEN_TYPE:
1525 if (base_format == GL_RG ||
1526 base_format == GL_RGB ||
1527 base_format == GL_RGBA) {
1528 return GL_TRUE;
1529 }
1530 return GL_FALSE;
1531 case GL_TEXTURE_BLUE_SIZE:
1532 case GL_TEXTURE_BLUE_TYPE:
1533 case GL_RENDERBUFFER_BLUE_SIZE:
1534 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1535 case GL_INTERNALFORMAT_BLUE_SIZE:
1536 case GL_INTERNALFORMAT_BLUE_TYPE:
1537 if (base_format == GL_RGB ||
1538 base_format == GL_RGBA) {
1539 return GL_TRUE;
1540 }
1541 return GL_FALSE;
1542 case GL_TEXTURE_ALPHA_SIZE:
1543 case GL_TEXTURE_ALPHA_TYPE:
1544 case GL_RENDERBUFFER_ALPHA_SIZE:
1545 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1546 case GL_INTERNALFORMAT_ALPHA_SIZE:
1547 case GL_INTERNALFORMAT_ALPHA_TYPE:
1548 if (base_format == GL_RGBA ||
1549 base_format == GL_ALPHA ||
1550 base_format == GL_LUMINANCE_ALPHA) {
1551 return GL_TRUE;
1552 }
1553 return GL_FALSE;
1554 case GL_TEXTURE_LUMINANCE_SIZE:
1555 case GL_TEXTURE_LUMINANCE_TYPE:
1556 if (base_format == GL_LUMINANCE ||
1557 base_format == GL_LUMINANCE_ALPHA) {
1558 return GL_TRUE;
1559 }
1560 return GL_FALSE;
1561 case GL_TEXTURE_INTENSITY_SIZE:
1562 case GL_TEXTURE_INTENSITY_TYPE:
1563 if (base_format == GL_INTENSITY) {
1564 return GL_TRUE;
1565 }
1566 return GL_FALSE;
1567 case GL_TEXTURE_DEPTH_SIZE:
1568 case GL_TEXTURE_DEPTH_TYPE:
1569 case GL_RENDERBUFFER_DEPTH_SIZE:
1570 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1571 case GL_INTERNALFORMAT_DEPTH_SIZE:
1572 case GL_INTERNALFORMAT_DEPTH_TYPE:
1573 if (base_format == GL_DEPTH_STENCIL ||
1574 base_format == GL_DEPTH_COMPONENT) {
1575 return GL_TRUE;
1576 }
1577 return GL_FALSE;
1578 case GL_RENDERBUFFER_STENCIL_SIZE:
1579 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1580 case GL_INTERNALFORMAT_STENCIL_SIZE:
1581 case GL_INTERNALFORMAT_STENCIL_TYPE:
1582 if (base_format == GL_DEPTH_STENCIL ||
1583 base_format == GL_STENCIL_INDEX) {
1584 return GL_TRUE;
1585 }
1586 return GL_FALSE;
1587 default:
1588 _mesa_warning(NULL, "%s: Unexpected channel token 0x%x\n",
1589 __func__, pname);
1590 return GL_FALSE;
1591 }
1592
1593 return GL_FALSE;
1594 }
1595
1596
1597 /**
1598 * If format is a generic compressed format, return the corresponding
1599 * non-compressed format. For other formats, return the format as-is.
1600 */
1601 GLenum
_mesa_generic_compressed_format_to_uncompressed_format(GLenum format)1602 _mesa_generic_compressed_format_to_uncompressed_format(GLenum format)
1603 {
1604 switch (format) {
1605 case GL_COMPRESSED_RED:
1606 return GL_RED;
1607 case GL_COMPRESSED_RG:
1608 return GL_RG;
1609 case GL_COMPRESSED_RGB:
1610 return GL_RGB;
1611 case GL_COMPRESSED_RGBA:
1612 return GL_RGBA;
1613 case GL_COMPRESSED_ALPHA:
1614 return GL_ALPHA;
1615 case GL_COMPRESSED_LUMINANCE:
1616 return GL_LUMINANCE;
1617 case GL_COMPRESSED_LUMINANCE_ALPHA:
1618 return GL_LUMINANCE_ALPHA;
1619 case GL_COMPRESSED_INTENSITY:
1620 return GL_INTENSITY;
1621 /* sRGB formats */
1622 case GL_COMPRESSED_SRGB:
1623 return GL_SRGB;
1624 case GL_COMPRESSED_SRGB_ALPHA:
1625 return GL_SRGB_ALPHA;
1626 case GL_COMPRESSED_SLUMINANCE:
1627 return GL_SLUMINANCE;
1628 case GL_COMPRESSED_SLUMINANCE_ALPHA:
1629 return GL_SLUMINANCE_ALPHA;
1630 default:
1631 return format;
1632 }
1633 }
1634
1635
1636 /**
1637 * Return the equivalent non-generic internal format.
1638 * This is useful for comparing whether two internal formats are equivalent.
1639 */
1640 GLenum
_mesa_get_nongeneric_internalformat(GLenum format)1641 _mesa_get_nongeneric_internalformat(GLenum format)
1642 {
1643 switch (format) {
1644 /* GL 1.1 formats. */
1645 case 4:
1646 case GL_RGBA:
1647 return GL_RGBA8;
1648 case 3:
1649 case GL_RGB:
1650 return GL_RGB8;
1651 case 2:
1652 case GL_LUMINANCE_ALPHA:
1653 return GL_LUMINANCE8_ALPHA8;
1654 case 1:
1655 case GL_LUMINANCE:
1656 return GL_LUMINANCE8;
1657 case GL_ALPHA:
1658 return GL_ALPHA8;
1659 case GL_INTENSITY:
1660 return GL_INTENSITY8;
1661
1662 /* GL_ARB_texture_rg */
1663 case GL_RED:
1664 return GL_R8;
1665 case GL_RG:
1666 return GL_RG8;
1667
1668 /* GL_EXT_texture_sRGB */
1669 case GL_SRGB:
1670 return GL_SRGB8;
1671 case GL_SRGB_ALPHA:
1672 return GL_SRGB8_ALPHA8;
1673 case GL_SLUMINANCE:
1674 return GL_SLUMINANCE8;
1675 case GL_SLUMINANCE_ALPHA:
1676 return GL_SLUMINANCE8_ALPHA8;
1677
1678 /* GL_EXT_texture_snorm */
1679 case GL_RGBA_SNORM:
1680 return GL_RGBA8_SNORM;
1681 case GL_RGB_SNORM:
1682 return GL_RGB8_SNORM;
1683 case GL_RG_SNORM:
1684 return GL_RG8_SNORM;
1685 case GL_RED_SNORM:
1686 return GL_R8_SNORM;
1687 case GL_LUMINANCE_ALPHA_SNORM:
1688 return GL_LUMINANCE8_ALPHA8_SNORM;
1689 case GL_LUMINANCE_SNORM:
1690 return GL_LUMINANCE8_SNORM;
1691 case GL_ALPHA_SNORM:
1692 return GL_ALPHA8_SNORM;
1693 case GL_INTENSITY_SNORM:
1694 return GL_INTENSITY8_SNORM;
1695
1696 default:
1697 return format;
1698 }
1699 }
1700
1701
1702 /**
1703 * Convert an sRGB internal format to linear.
1704 */
1705 GLenum
_mesa_get_linear_internalformat(GLenum format)1706 _mesa_get_linear_internalformat(GLenum format)
1707 {
1708 switch (format) {
1709 case GL_SRGB:
1710 return GL_RGB;
1711 case GL_SRGB_ALPHA:
1712 return GL_RGBA;
1713 case GL_SRGB8:
1714 return GL_RGB8;
1715 case GL_SRGB8_ALPHA8:
1716 return GL_RGBA8;
1717 case GL_SLUMINANCE8:
1718 return GL_LUMINANCE8;
1719 case GL_SLUMINANCE:
1720 return GL_LUMINANCE;
1721 case GL_SLUMINANCE_ALPHA:
1722 return GL_LUMINANCE_ALPHA;
1723 case GL_SLUMINANCE8_ALPHA8:
1724 return GL_LUMINANCE8_ALPHA8;
1725 default:
1726 return format;
1727 }
1728 }
1729
1730
1731 static bool
valid_texture_format_enum(const struct gl_context * ctx,GLenum format)1732 valid_texture_format_enum(const struct gl_context *ctx, GLenum format)
1733 {
1734 switch (format) {
1735 case GL_RGBA:
1736 case GL_RGB:
1737 case GL_RED:
1738 /* These are always supported */
1739 return true;
1740
1741 case GL_STENCIL_INDEX:
1742 return _mesa_is_desktop_gl(ctx) || _mesa_is_gles31(ctx);
1743
1744 case GL_COLOR_INDEX:
1745 return _mesa_is_desktop_gl_compat(ctx);
1746
1747 case GL_RG:
1748 return _mesa_has_rg_textures(ctx);
1749
1750 case GL_GREEN:
1751 case GL_BLUE:
1752 return _mesa_is_desktop_gl(ctx);
1753
1754 case GL_BGR:
1755 case GL_BGRA:
1756 assert(_mesa_is_desktop_gl(ctx) ||
1757 _mesa_has_EXT_texture_format_BGRA8888(ctx));
1758 return true;
1759
1760 case GL_RED_INTEGER:
1761 case GL_GREEN_INTEGER:
1762 case GL_BLUE_INTEGER:
1763 case GL_RGB_INTEGER:
1764 case GL_RGBA_INTEGER:
1765 return _mesa_has_integer_textures(ctx);
1766
1767 case GL_RG_INTEGER:
1768 return (_mesa_has_EXT_texture_integer(ctx) &&
1769 _mesa_has_ARB_texture_rg(ctx)) ||
1770 _mesa_is_gles3(ctx);
1771
1772 case GL_BGR_INTEGER:
1773 case GL_BGRA_INTEGER:
1774 case GL_ALPHA_INTEGER:
1775 return _mesa_has_EXT_texture_integer(ctx);
1776
1777 case GL_LUMINANCE_INTEGER_EXT:
1778 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1779 return _mesa_is_desktop_gl_compat(ctx) &&
1780 _mesa_has_EXT_texture_integer(ctx);
1781
1782 case GL_DEPTH_COMPONENT:
1783 return _mesa_is_desktop_gl(ctx) ||
1784 _mesa_has_OES_depth_texture(ctx);
1785
1786 case GL_DEPTH_STENCIL:
1787 return _mesa_has_EXT_packed_depth_stencil(ctx) ||
1788 (_mesa_has_OES_packed_depth_stencil(ctx) &&
1789 _mesa_has_OES_depth_texture(ctx));
1790
1791 case GL_LUMINANCE_ALPHA:
1792 case GL_LUMINANCE:
1793 case GL_ALPHA:
1794 return _mesa_is_desktop_gl_compat(ctx) ||
1795 _mesa_has_ARB_ES3_compatibility(ctx) ||
1796 _mesa_is_gles(ctx);
1797
1798 case GL_ABGR_EXT:
1799 return _mesa_has_EXT_abgr(ctx);
1800
1801 case GL_YCBCR_MESA:
1802 return _mesa_has_MESA_ycbcr_texture(ctx);
1803
1804 default:
1805 return false;
1806 }
1807 }
1808
1809 static bool
valid_texture_type_enum(const struct gl_context * ctx,GLenum type)1810 valid_texture_type_enum(const struct gl_context *ctx, GLenum type)
1811 {
1812 switch (type) {
1813 case GL_UNSIGNED_BYTE:
1814 case GL_BYTE:
1815 case GL_UNSIGNED_SHORT:
1816 case GL_SHORT:
1817 case GL_UNSIGNED_INT:
1818 case GL_INT:
1819 case GL_UNSIGNED_SHORT_5_6_5:
1820 case GL_UNSIGNED_SHORT_4_4_4_4:
1821 case GL_UNSIGNED_SHORT_5_5_5_1:
1822 /* These are always supported */
1823 return true;
1824
1825 case GL_FLOAT:
1826 return _mesa_is_desktop_gl(ctx) || _mesa_has_OES_texture_float(ctx);
1827
1828 case GL_HALF_FLOAT:
1829 return _mesa_has_ARB_half_float_pixel(ctx) || _mesa_is_gles3(ctx);
1830
1831 case GL_HALF_FLOAT_OES:
1832 /* This is a different enum than the above, that only applies to this
1833 * extension
1834 */
1835 return _mesa_has_OES_texture_half_float(ctx);
1836
1837 case GL_BITMAP:
1838 return _mesa_is_desktop_gl_compat(ctx);
1839
1840 case GL_UNSIGNED_BYTE_3_3_2:
1841 case GL_UNSIGNED_BYTE_2_3_3_REV:
1842 case GL_UNSIGNED_SHORT_5_6_5_REV:
1843 case GL_UNSIGNED_INT_8_8_8_8:
1844 case GL_UNSIGNED_INT_8_8_8_8_REV:
1845 return _mesa_is_desktop_gl(ctx);
1846
1847 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
1848 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
1849 assert(_mesa_is_desktop_gl(ctx) || _mesa_has_EXT_read_format_bgra(ctx));
1850 return true;
1851
1852 case GL_UNSIGNED_INT_10_10_10_2:
1853 /* not supported in GLESv3, unlike GL_UNSIGNED_INT_2_10_10_10_REV */
1854 return _mesa_is_desktop_gl(ctx);
1855
1856 case GL_UNSIGNED_INT_2_10_10_10_REV:
1857 return _mesa_has_texture_type_2_10_10_10_REV(ctx);
1858
1859 case GL_UNSIGNED_INT_10F_11F_11F_REV:
1860 return _mesa_has_packed_float(ctx);
1861
1862 case GL_UNSIGNED_INT_5_9_9_9_REV:
1863 return _mesa_has_texture_shared_exponent(ctx);
1864
1865 case GL_UNSIGNED_INT_24_8:
1866 assert(_mesa_has_EXT_packed_depth_stencil(ctx) ||
1867 _mesa_has_OES_packed_depth_stencil(ctx));
1868 return true;
1869
1870 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
1871 return _mesa_has_float_depth_buffer(ctx);
1872
1873 default:
1874 return false;
1875 }
1876 }
1877
1878
1879 /**
1880 * Do error checking of format/type combinations for glReadPixels,
1881 * glDrawPixels and glTex[Sub]Image. Note that depending on the format
1882 * and type values, we may either generate GL_INVALID_OPERATION or
1883 * GL_INVALID_ENUM.
1884 *
1885 * \param format pixel format.
1886 * \param type pixel type.
1887 *
1888 * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
1889 */
1890 GLenum
_mesa_error_check_format_and_type(const struct gl_context * ctx,GLenum format,GLenum type)1891 _mesa_error_check_format_and_type(const struct gl_context *ctx,
1892 GLenum format, GLenum type)
1893 {
1894
1895 if (!valid_texture_format_enum(ctx, format) ||
1896 !valid_texture_type_enum(ctx, type))
1897 return GL_INVALID_ENUM;
1898
1899 /* From OpenGL 3.3 spec, page 220:
1900 * "If the format is DEPTH_STENCIL, then values are taken from
1901 * both the depth buffer and the stencil buffer. If there is no
1902 * depth buffer or if there is no stencil buffer, then the error
1903 * INVALID_OPERATION occurs. If the type parameter is not
1904 * UNSIGNED_INT_24_8 or FLOAT_32_UNSIGNED_INT_24_8_REV, then the
1905 * error INVALID_ENUM occurs."
1906 *
1907 * OpenGL ES still generates GL_INVALID_OPERATION because glReadPixels
1908 * cannot be used to read depth or stencil in that API.
1909 */
1910 if (_mesa_is_desktop_gl(ctx) && format == GL_DEPTH_STENCIL
1911 && type != GL_UNSIGNED_INT_24_8
1912 && type != GL_FLOAT_32_UNSIGNED_INT_24_8_REV)
1913 return GL_INVALID_ENUM;
1914
1915 /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
1916 switch (type) {
1917 case GL_BITMAP:
1918 if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) {
1919 return GL_INVALID_ENUM;
1920 }
1921 break;
1922
1923 case GL_UNSIGNED_BYTE_3_3_2:
1924 case GL_UNSIGNED_BYTE_2_3_3_REV:
1925 case GL_UNSIGNED_SHORT_5_6_5:
1926 case GL_UNSIGNED_SHORT_5_6_5_REV:
1927 if (format == GL_RGB) {
1928 break; /* OK */
1929 }
1930 if (format == GL_RGB_INTEGER &&
1931 _mesa_has_ARB_texture_rgb10_a2ui(ctx)) {
1932 break; /* OK */
1933 }
1934 return GL_INVALID_OPERATION;
1935
1936 case GL_UNSIGNED_SHORT_4_4_4_4:
1937 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
1938 case GL_UNSIGNED_INT_8_8_8_8:
1939 case GL_UNSIGNED_INT_8_8_8_8_REV:
1940 if (format == GL_RGBA ||
1941 format == GL_BGRA ||
1942 format == GL_ABGR_EXT) {
1943 break; /* OK */
1944 }
1945 if ((format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER) &&
1946 _mesa_has_ARB_texture_rgb10_a2ui(ctx)) {
1947 break; /* OK */
1948 }
1949 return GL_INVALID_OPERATION;
1950
1951 case GL_UNSIGNED_SHORT_5_5_5_1:
1952 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
1953 case GL_UNSIGNED_INT_10_10_10_2:
1954 case GL_UNSIGNED_INT_2_10_10_10_REV:
1955 if (format == GL_RGBA ||
1956 format == GL_BGRA) {
1957 break; /* OK */
1958 }
1959 if ((format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER) &&
1960 _mesa_has_ARB_texture_rgb10_a2ui(ctx)) {
1961 break; /* OK */
1962 }
1963 if ((format == GL_RGBA_INTEGER || format == GL_BGRA_INTEGER) &&
1964 type == GL_UNSIGNED_INT_2_10_10_10_REV && _mesa_is_gles3(ctx)) {
1965 break; /* OK */
1966 }
1967 if (type == GL_UNSIGNED_INT_2_10_10_10_REV && format == GL_RGB &&
1968 _mesa_has_EXT_texture_type_2_10_10_10_REV(ctx)) {
1969 break; /* OK */
1970 }
1971 return GL_INVALID_OPERATION;
1972
1973 case GL_UNSIGNED_INT_24_8:
1974 /* Depth buffer OK to read in OpenGL ES (NV_read_depth). */
1975 if (_mesa_is_gles2(ctx) && format == GL_DEPTH_COMPONENT)
1976 return GL_NO_ERROR;
1977
1978 if (format != GL_DEPTH_STENCIL) {
1979 return GL_INVALID_OPERATION;
1980 }
1981 return GL_NO_ERROR;
1982
1983 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
1984 if (format != GL_DEPTH_STENCIL) {
1985 return GL_INVALID_OPERATION;
1986 }
1987 return GL_NO_ERROR;
1988
1989 case GL_UNSIGNED_INT_10F_11F_11F_REV:
1990 if (format != GL_RGB) {
1991 return GL_INVALID_OPERATION;
1992 }
1993 return GL_NO_ERROR;
1994
1995 case GL_HALF_FLOAT_OES:
1996 switch (format) {
1997 case GL_RGBA:
1998 case GL_RGB:
1999 case GL_LUMINANCE_ALPHA:
2000 case GL_LUMINANCE:
2001 case GL_ALPHA:
2002 return GL_NO_ERROR;
2003 case GL_RG:
2004 case GL_RED:
2005 if (_mesa_has_EXT_texture_rg(ctx))
2006 return GL_NO_ERROR;
2007 FALLTHROUGH;
2008 default:
2009 return GL_INVALID_OPERATION;
2010 }
2011
2012 default:
2013 ; /* fall-through */
2014 }
2015
2016 /* now, for each format, check the type for compatibility */
2017 switch (format) {
2018 case GL_COLOR_INDEX:
2019 case GL_STENCIL_INDEX:
2020 switch (type) {
2021 case GL_BITMAP:
2022 case GL_BYTE:
2023 case GL_UNSIGNED_BYTE:
2024 case GL_SHORT:
2025 case GL_UNSIGNED_SHORT:
2026 case GL_INT:
2027 case GL_UNSIGNED_INT:
2028 case GL_FLOAT:
2029 case GL_HALF_FLOAT:
2030 return GL_NO_ERROR;
2031 default:
2032 return GL_INVALID_ENUM;
2033 }
2034
2035 case GL_RED:
2036 case GL_GREEN:
2037 case GL_BLUE:
2038 case GL_ALPHA:
2039 #if 0 /* not legal! see table 3.6 of the 1.5 spec */
2040 case GL_INTENSITY:
2041 #endif
2042 case GL_LUMINANCE:
2043 case GL_LUMINANCE_ALPHA:
2044 case GL_DEPTH_COMPONENT:
2045 switch (type) {
2046 case GL_BYTE:
2047 case GL_UNSIGNED_BYTE:
2048 case GL_SHORT:
2049 case GL_UNSIGNED_SHORT:
2050 case GL_INT:
2051 case GL_UNSIGNED_INT:
2052 case GL_FLOAT:
2053 case GL_HALF_FLOAT:
2054 return GL_NO_ERROR;
2055 default:
2056 return GL_INVALID_ENUM;
2057 }
2058
2059 case GL_RG:
2060 switch (type) {
2061 case GL_BYTE:
2062 case GL_UNSIGNED_BYTE:
2063 case GL_SHORT:
2064 case GL_UNSIGNED_SHORT:
2065 case GL_INT:
2066 case GL_UNSIGNED_INT:
2067 case GL_FLOAT:
2068 case GL_HALF_FLOAT:
2069 return GL_NO_ERROR;
2070 default:
2071 return GL_INVALID_ENUM;
2072 }
2073
2074 case GL_RGB:
2075 switch (type) {
2076 case GL_BYTE:
2077 case GL_UNSIGNED_BYTE:
2078 case GL_SHORT:
2079 case GL_UNSIGNED_SHORT:
2080 case GL_INT:
2081 case GL_UNSIGNED_INT:
2082 case GL_FLOAT:
2083 case GL_UNSIGNED_BYTE_3_3_2:
2084 case GL_UNSIGNED_BYTE_2_3_3_REV:
2085 case GL_UNSIGNED_SHORT_5_6_5:
2086 case GL_UNSIGNED_SHORT_5_6_5_REV:
2087 case GL_HALF_FLOAT:
2088 return GL_NO_ERROR;
2089 case GL_UNSIGNED_INT_2_10_10_10_REV:
2090 /* OK by GL_EXT_texture_type_2_10_10_10_REV */
2091 return _mesa_has_EXT_texture_type_2_10_10_10_REV(ctx)
2092 ? GL_NO_ERROR : GL_INVALID_ENUM;
2093 case GL_UNSIGNED_INT_5_9_9_9_REV:
2094 case GL_UNSIGNED_INT_10F_11F_11F_REV:
2095 return GL_NO_ERROR;
2096 default:
2097 return GL_INVALID_ENUM;
2098 }
2099
2100 case GL_BGR:
2101 switch (type) {
2102 /* NOTE: no packed types are supported with BGR. That's
2103 * intentional, according to the GL spec.
2104 */
2105 case GL_BYTE:
2106 case GL_UNSIGNED_BYTE:
2107 case GL_SHORT:
2108 case GL_UNSIGNED_SHORT:
2109 case GL_INT:
2110 case GL_UNSIGNED_INT:
2111 case GL_FLOAT:
2112 case GL_HALF_FLOAT:
2113 return GL_NO_ERROR;
2114 default:
2115 return GL_INVALID_ENUM;
2116 }
2117
2118 case GL_RGBA:
2119 case GL_BGRA:
2120 switch (type) {
2121 case GL_BYTE:
2122 case GL_UNSIGNED_BYTE:
2123 case GL_SHORT:
2124 case GL_UNSIGNED_SHORT:
2125 case GL_INT:
2126 case GL_UNSIGNED_INT:
2127 case GL_FLOAT:
2128 case GL_UNSIGNED_SHORT_4_4_4_4:
2129 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
2130 case GL_UNSIGNED_SHORT_5_5_5_1:
2131 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
2132 case GL_UNSIGNED_INT_8_8_8_8:
2133 case GL_UNSIGNED_INT_8_8_8_8_REV:
2134 case GL_UNSIGNED_INT_10_10_10_2:
2135 case GL_UNSIGNED_INT_2_10_10_10_REV:
2136 case GL_HALF_FLOAT:
2137 return GL_NO_ERROR;
2138 default:
2139 return GL_INVALID_ENUM;
2140 }
2141
2142 case GL_ABGR_EXT:
2143 switch (type) {
2144 case GL_BYTE:
2145 case GL_UNSIGNED_BYTE:
2146 case GL_SHORT:
2147 case GL_UNSIGNED_SHORT:
2148 case GL_INT:
2149 case GL_UNSIGNED_INT:
2150 case GL_FLOAT:
2151 case GL_UNSIGNED_SHORT_4_4_4_4:
2152 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
2153 case GL_UNSIGNED_INT_8_8_8_8:
2154 case GL_UNSIGNED_INT_8_8_8_8_REV:
2155 case GL_HALF_FLOAT:
2156 return GL_NO_ERROR;
2157 default:
2158 return GL_INVALID_ENUM;
2159 }
2160
2161 case GL_YCBCR_MESA:
2162 if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
2163 type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
2164 return GL_NO_ERROR;
2165 else
2166 return GL_INVALID_OPERATION;
2167
2168 case GL_DEPTH_STENCIL:
2169 if (type == GL_UNSIGNED_INT_24_8 ||
2170 type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV)
2171 return GL_NO_ERROR;
2172 else
2173 return GL_INVALID_ENUM;
2174
2175 /* integer-valued formats */
2176 case GL_RED_INTEGER:
2177 case GL_GREEN_INTEGER:
2178 case GL_BLUE_INTEGER:
2179 case GL_ALPHA_INTEGER:
2180 case GL_RG_INTEGER:
2181 switch (type) {
2182 case GL_BYTE:
2183 case GL_UNSIGNED_BYTE:
2184 case GL_SHORT:
2185 case GL_UNSIGNED_SHORT:
2186 case GL_INT:
2187 case GL_UNSIGNED_INT:
2188 return _mesa_has_integer_textures(ctx)
2189 ? GL_NO_ERROR : GL_INVALID_ENUM;
2190 default:
2191 return GL_INVALID_ENUM;
2192 }
2193
2194 case GL_RGB_INTEGER:
2195 switch (type) {
2196 case GL_BYTE:
2197 case GL_UNSIGNED_BYTE:
2198 case GL_SHORT:
2199 case GL_UNSIGNED_SHORT:
2200 case GL_INT:
2201 case GL_UNSIGNED_INT:
2202 return _mesa_has_integer_textures(ctx)
2203 ? GL_NO_ERROR : GL_INVALID_ENUM;
2204 case GL_UNSIGNED_BYTE_3_3_2:
2205 case GL_UNSIGNED_BYTE_2_3_3_REV:
2206 case GL_UNSIGNED_SHORT_5_6_5:
2207 case GL_UNSIGNED_SHORT_5_6_5_REV:
2208 return _mesa_has_ARB_texture_rgb10_a2ui(ctx)
2209 ? GL_NO_ERROR : GL_INVALID_ENUM;
2210 default:
2211 return GL_INVALID_ENUM;
2212 }
2213
2214 case GL_BGR_INTEGER:
2215 switch (type) {
2216 case GL_BYTE:
2217 case GL_UNSIGNED_BYTE:
2218 case GL_SHORT:
2219 case GL_UNSIGNED_SHORT:
2220 case GL_INT:
2221 case GL_UNSIGNED_INT:
2222 /* NOTE: no packed formats w/ BGR format */
2223 return _mesa_has_integer_textures(ctx)
2224 ? GL_NO_ERROR : GL_INVALID_ENUM;
2225 default:
2226 return GL_INVALID_ENUM;
2227 }
2228
2229 case GL_RGBA_INTEGER:
2230 case GL_BGRA_INTEGER:
2231 switch (type) {
2232 case GL_BYTE:
2233 case GL_UNSIGNED_BYTE:
2234 case GL_SHORT:
2235 case GL_UNSIGNED_SHORT:
2236 case GL_INT:
2237 case GL_UNSIGNED_INT:
2238 return _mesa_has_integer_textures(ctx)
2239 ? GL_NO_ERROR : GL_INVALID_ENUM;
2240 case GL_UNSIGNED_SHORT_4_4_4_4:
2241 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
2242 case GL_UNSIGNED_SHORT_5_5_5_1:
2243 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
2244 case GL_UNSIGNED_INT_8_8_8_8:
2245 case GL_UNSIGNED_INT_8_8_8_8_REV:
2246 case GL_UNSIGNED_INT_10_10_10_2:
2247 case GL_UNSIGNED_INT_2_10_10_10_REV:
2248 return _mesa_has_texture_rgb10_a2ui(ctx)
2249 ? GL_NO_ERROR : GL_INVALID_ENUM;
2250 default:
2251 return GL_INVALID_ENUM;
2252 }
2253
2254 case GL_LUMINANCE_INTEGER_EXT:
2255 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
2256 switch (type) {
2257 case GL_BYTE:
2258 case GL_UNSIGNED_BYTE:
2259 case GL_SHORT:
2260 case GL_UNSIGNED_SHORT:
2261 case GL_INT:
2262 case GL_UNSIGNED_INT:
2263 return _mesa_has_integer_textures(ctx)
2264 ? GL_NO_ERROR : GL_INVALID_ENUM;
2265 default:
2266 return GL_INVALID_ENUM;
2267 }
2268
2269 default:
2270 return GL_INVALID_ENUM;
2271 }
2272 return GL_NO_ERROR;
2273 }
2274
2275
2276 /**
2277 * Do error checking of format/type combinations for OpenGL ES glReadPixels
2278 * and glTex[Sub]Image.
2279 * \return error code, or GL_NO_ERROR.
2280 */
2281 GLenum
_mesa_es_error_check_format_and_type(const struct gl_context * ctx,GLenum format,GLenum type,unsigned dimensions)2282 _mesa_es_error_check_format_and_type(const struct gl_context *ctx,
2283 GLenum format, GLenum type,
2284 unsigned dimensions)
2285 {
2286 GLboolean type_valid = GL_TRUE;
2287
2288 switch (format) {
2289 case GL_RED:
2290 case GL_RG:
2291 if (!_mesa_has_rg_textures(ctx))
2292 return GL_INVALID_VALUE;
2293 FALLTHROUGH;
2294 case GL_ALPHA:
2295 case GL_LUMINANCE:
2296 case GL_LUMINANCE_ALPHA:
2297 type_valid = (type == GL_UNSIGNED_BYTE
2298 || type == GL_FLOAT
2299 || type == GL_HALF_FLOAT_OES);
2300 break;
2301
2302 case GL_RGB:
2303 type_valid = (type == GL_UNSIGNED_BYTE
2304 || type == GL_UNSIGNED_SHORT_5_6_5
2305 || type == GL_FLOAT
2306 || type == GL_HALF_FLOAT_OES);
2307 break;
2308
2309 case GL_RGBA:
2310 type_valid = (type == GL_UNSIGNED_BYTE
2311 || type == GL_UNSIGNED_SHORT_4_4_4_4
2312 || type == GL_UNSIGNED_SHORT_5_5_5_1
2313 || type == GL_FLOAT
2314 || type == GL_HALF_FLOAT_OES
2315 || (_mesa_has_texture_type_2_10_10_10_REV(ctx) &&
2316 type == GL_UNSIGNED_INT_2_10_10_10_REV));
2317 break;
2318
2319 case GL_DEPTH_COMPONENT:
2320 /* This format is filtered against invalid dimensionalities elsewhere.
2321 */
2322 type_valid = (type == GL_UNSIGNED_SHORT
2323 || type == GL_UNSIGNED_INT);
2324 break;
2325
2326 case GL_DEPTH_STENCIL:
2327 /* This format is filtered against invalid dimensionalities elsewhere.
2328 */
2329 type_valid = (type == GL_UNSIGNED_INT_24_8);
2330 break;
2331
2332 case GL_BGRA:
2333 type_valid = (type == GL_UNSIGNED_BYTE);
2334
2335 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
2336 * the format does not appear to be allowed for 3D textures in OpenGL
2337 * ES.
2338 */
2339 if (dimensions != 2)
2340 return GL_INVALID_VALUE;
2341
2342 break;
2343
2344 default:
2345 return GL_INVALID_VALUE;
2346 }
2347
2348 return type_valid ? GL_NO_ERROR : GL_INVALID_OPERATION;
2349 }
2350
2351 /**
2352 * Return the simple base format for a given internal texture format.
2353 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
2354 *
2355 * \param ctx GL context.
2356 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
2357 *
2358 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
2359 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
2360 *
2361 * This is the format which is used during texture application (i.e. the
2362 * texture format and env mode determine the arithmetic used.
2363 */
2364 GLint
_mesa_base_tex_format(const struct gl_context * ctx,GLint internalFormat)2365 _mesa_base_tex_format(const struct gl_context *ctx, GLint internalFormat)
2366 {
2367 switch (internalFormat) {
2368 case GL_ALPHA:
2369 case GL_ALPHA4:
2370 case GL_ALPHA8:
2371 case GL_ALPHA12:
2372 case GL_ALPHA16:
2373 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2374 case 1:
2375 case GL_LUMINANCE:
2376 case GL_LUMINANCE4:
2377 case GL_LUMINANCE8:
2378 case GL_LUMINANCE12:
2379 case GL_LUMINANCE16:
2380 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2381 case 2:
2382 case GL_LUMINANCE_ALPHA:
2383 case GL_LUMINANCE4_ALPHA4:
2384 case GL_LUMINANCE6_ALPHA2:
2385 case GL_LUMINANCE8_ALPHA8:
2386 case GL_LUMINANCE12_ALPHA4:
2387 case GL_LUMINANCE12_ALPHA12:
2388 case GL_LUMINANCE16_ALPHA16:
2389 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2390 case GL_INTENSITY:
2391 case GL_INTENSITY4:
2392 case GL_INTENSITY8:
2393 case GL_INTENSITY12:
2394 case GL_INTENSITY16:
2395 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2396 case 3:
2397 return (ctx->API != API_OPENGL_CORE) ? GL_RGB : -1;
2398 case GL_RGB:
2399 case GL_R3_G3_B2:
2400 case GL_RGB4:
2401 case GL_RGB5:
2402 case GL_RGB8:
2403 case GL_RGB10:
2404 case GL_RGB12:
2405 case GL_RGB16:
2406 return GL_RGB;
2407 case 4:
2408 return (ctx->API != API_OPENGL_CORE) ? GL_RGBA : -1;
2409 case GL_RGBA:
2410 case GL_RGBA2:
2411 case GL_RGBA4:
2412 case GL_RGB5_A1:
2413 case GL_RGBA8:
2414 case GL_RGB10_A2:
2415 case GL_RGBA12:
2416 case GL_RGBA16:
2417 return GL_RGBA;
2418 case GL_BGRA:
2419 case GL_BGRA8_EXT:
2420 return GL_RGBA;
2421 default:
2422 ; /* fallthrough */
2423 }
2424
2425 if (_mesa_has_OES_framebuffer_object(ctx) ||
2426 _mesa_is_gles2_compatible(ctx)) {
2427 switch (internalFormat) {
2428 case GL_RGB565:
2429 return GL_RGB;
2430 default:
2431 ; /* fallthrough */
2432 }
2433 }
2434
2435 if (ctx->API != API_OPENGLES) {
2436 switch (internalFormat) {
2437 case GL_DEPTH_COMPONENT:
2438 case GL_DEPTH_COMPONENT16:
2439 case GL_DEPTH_COMPONENT24:
2440 case GL_DEPTH_COMPONENT32:
2441 return GL_DEPTH_COMPONENT;
2442 case GL_DEPTH_STENCIL:
2443 case GL_DEPTH24_STENCIL8:
2444 return GL_DEPTH_STENCIL;
2445 default:
2446 ; /* fallthrough */
2447 }
2448 }
2449
2450 if (_mesa_has_ARB_texture_stencil8(ctx) ||
2451 _mesa_has_OES_texture_stencil8(ctx)) {
2452 switch (internalFormat) {
2453 case GL_STENCIL_INDEX:
2454 case GL_STENCIL_INDEX1:
2455 case GL_STENCIL_INDEX4:
2456 case GL_STENCIL_INDEX8:
2457 case GL_STENCIL_INDEX16:
2458 return GL_STENCIL_INDEX;
2459 default:
2460 ; /* fallthrough */
2461 }
2462 }
2463
2464 switch (internalFormat) {
2465 case GL_COMPRESSED_ALPHA:
2466 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2467 case GL_COMPRESSED_LUMINANCE:
2468 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2469 case GL_COMPRESSED_LUMINANCE_ALPHA:
2470 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2471 case GL_COMPRESSED_INTENSITY:
2472 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2473 case GL_COMPRESSED_RGB:
2474 return GL_RGB;
2475 case GL_COMPRESSED_RGBA:
2476 return GL_RGBA;
2477 default:
2478 ; /* fallthrough */
2479 }
2480
2481 if (_mesa_is_compressed_format(ctx, internalFormat)) {
2482 GLenum base_compressed =
2483 _mesa_gl_compressed_format_base_format(internalFormat);
2484 if (base_compressed)
2485 return base_compressed;
2486 }
2487
2488 if ((_mesa_has_KHR_texture_compression_astc_ldr(ctx) &&
2489 is_astc_2d_format(internalFormat)) ||
2490 (_mesa_has_OES_texture_compression_astc(ctx) &&
2491 is_astc_3d_format(internalFormat)))
2492 return GL_RGBA;
2493
2494 if (_mesa_has_MESA_ycbcr_texture(ctx)) {
2495 if (internalFormat == GL_YCBCR_MESA)
2496 return GL_YCBCR_MESA;
2497 }
2498
2499 if (_mesa_has_half_float_textures(ctx)) {
2500 switch (internalFormat) {
2501 case GL_ALPHA16F_ARB:
2502 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2503 case GL_RGBA16F_ARB:
2504 return GL_RGBA;
2505 case GL_RGB16F_ARB:
2506 return GL_RGB;
2507 case GL_INTENSITY16F_ARB:
2508 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2509 case GL_LUMINANCE16F_ARB:
2510 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2511 case GL_LUMINANCE_ALPHA16F_ARB:
2512 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2513 }
2514 }
2515
2516 if (_mesa_has_float_textures(ctx)) {
2517 switch (internalFormat) {
2518 case GL_ALPHA32F_ARB:
2519 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2520 case GL_RGBA32F_ARB:
2521 return GL_RGBA;
2522 case GL_RGB32F_ARB:
2523 return GL_RGB;
2524 case GL_INTENSITY32F_ARB:
2525 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2526 case GL_LUMINANCE32F_ARB:
2527 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2528 case GL_LUMINANCE_ALPHA32F_ARB:
2529 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2530 }
2531 }
2532
2533 if (_mesa_has_EXT_texture_snorm(ctx) || _mesa_is_gles3(ctx)) {
2534 switch (internalFormat) {
2535 case GL_RED_SNORM:
2536 case GL_R8_SNORM:
2537 case GL_R16_SNORM:
2538 return GL_RED;
2539 case GL_RG_SNORM:
2540 case GL_RG8_SNORM:
2541 case GL_RG16_SNORM:
2542 return GL_RG;
2543 case GL_RGB_SNORM:
2544 case GL_RGB8_SNORM:
2545 case GL_RGB16_SNORM:
2546 return GL_RGB;
2547 case GL_RGBA_SNORM:
2548 case GL_RGBA8_SNORM:
2549 case GL_RGBA16_SNORM:
2550 return GL_RGBA;
2551 case GL_ALPHA_SNORM:
2552 case GL_ALPHA8_SNORM:
2553 case GL_ALPHA16_SNORM:
2554 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2555 case GL_LUMINANCE_SNORM:
2556 case GL_LUMINANCE8_SNORM:
2557 case GL_LUMINANCE16_SNORM:
2558 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2559 case GL_LUMINANCE_ALPHA_SNORM:
2560 case GL_LUMINANCE8_ALPHA8_SNORM:
2561 case GL_LUMINANCE16_ALPHA16_SNORM:
2562 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2563 case GL_INTENSITY_SNORM:
2564 case GL_INTENSITY8_SNORM:
2565 case GL_INTENSITY16_SNORM:
2566 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2567 default:
2568 ; /* fallthrough */
2569 }
2570 }
2571
2572 if (_mesa_has_EXT_texture_sRGB(ctx) || _mesa_is_gles3(ctx)) {
2573 switch (internalFormat) {
2574 case GL_SRGB:
2575 case GL_SRGB8:
2576 case GL_COMPRESSED_SRGB:
2577 return GL_RGB;
2578 case GL_SRGB_ALPHA:
2579 case GL_SRGB8_ALPHA8:
2580 case GL_COMPRESSED_SRGB_ALPHA:
2581 return GL_RGBA;
2582 case GL_SLUMINANCE_ALPHA:
2583 case GL_SLUMINANCE8_ALPHA8:
2584 case GL_COMPRESSED_SLUMINANCE_ALPHA:
2585 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2586 case GL_SLUMINANCE:
2587 case GL_SLUMINANCE8:
2588 case GL_COMPRESSED_SLUMINANCE:
2589 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2590 default:
2591 ; /* fallthrough */
2592 }
2593 }
2594
2595 if (_mesa_has_EXT_texture_sRGB_R8(ctx)) {
2596 switch (internalFormat) {
2597 case GL_SR8_EXT:
2598 return GL_RED;
2599 default:
2600 ; /* fallthrough */
2601 }
2602 }
2603
2604 if (_mesa_has_EXT_texture_sRGB_RG8(ctx)) {
2605 switch (internalFormat) {
2606 case GL_SRG8_EXT:
2607 return GL_RG;
2608 default:
2609 ; /* fallthrough */
2610 }
2611 }
2612
2613 if (_mesa_has_integer_textures(ctx)) {
2614 switch (internalFormat) {
2615 case GL_RGBA8UI:
2616 case GL_RGBA16UI:
2617 case GL_RGBA32UI:
2618 case GL_RGBA8I:
2619 case GL_RGBA16I:
2620 case GL_RGBA32I:
2621 return GL_RGBA;
2622 case GL_RGB8UI:
2623 case GL_RGB16UI:
2624 case GL_RGB32UI:
2625 case GL_RGB8I:
2626 case GL_RGB16I:
2627 case GL_RGB32I:
2628 return GL_RGB;
2629 }
2630 }
2631
2632 if (_mesa_has_texture_rgb10_a2ui(ctx)) {
2633 switch (internalFormat) {
2634 case GL_RGB10_A2UI:
2635 return GL_RGBA;
2636 }
2637 }
2638
2639 if (_mesa_has_integer_textures(ctx)) {
2640 switch (internalFormat) {
2641 case GL_ALPHA8UI_EXT:
2642 case GL_ALPHA16UI_EXT:
2643 case GL_ALPHA32UI_EXT:
2644 case GL_ALPHA8I_EXT:
2645 case GL_ALPHA16I_EXT:
2646 case GL_ALPHA32I_EXT:
2647 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
2648 case GL_INTENSITY8UI_EXT:
2649 case GL_INTENSITY16UI_EXT:
2650 case GL_INTENSITY32UI_EXT:
2651 case GL_INTENSITY8I_EXT:
2652 case GL_INTENSITY16I_EXT:
2653 case GL_INTENSITY32I_EXT:
2654 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
2655 case GL_LUMINANCE8UI_EXT:
2656 case GL_LUMINANCE16UI_EXT:
2657 case GL_LUMINANCE32UI_EXT:
2658 case GL_LUMINANCE8I_EXT:
2659 case GL_LUMINANCE16I_EXT:
2660 case GL_LUMINANCE32I_EXT:
2661 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
2662 case GL_LUMINANCE_ALPHA8UI_EXT:
2663 case GL_LUMINANCE_ALPHA16UI_EXT:
2664 case GL_LUMINANCE_ALPHA32UI_EXT:
2665 case GL_LUMINANCE_ALPHA8I_EXT:
2666 case GL_LUMINANCE_ALPHA16I_EXT:
2667 case GL_LUMINANCE_ALPHA32I_EXT:
2668 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
2669 default:
2670 ; /* fallthrough */
2671 }
2672 }
2673
2674 if (_mesa_has_rg_textures(ctx)) {
2675 switch (internalFormat) {
2676 case GL_R16F:
2677 if (!_mesa_has_half_float_textures(ctx))
2678 break;
2679 return GL_RED;
2680 case GL_R32F:
2681 if (!_mesa_has_float_textures(ctx))
2682 break;
2683 return GL_RED;
2684 case GL_R8I:
2685 case GL_R8UI:
2686 case GL_R16I:
2687 case GL_R16UI:
2688 case GL_R32I:
2689 case GL_R32UI:
2690 if (!_mesa_has_integer_textures(ctx))
2691 break;
2692 FALLTHROUGH;
2693 case GL_R8:
2694 case GL_R16:
2695 case GL_RED:
2696 case GL_COMPRESSED_RED:
2697 return GL_RED;
2698
2699 case GL_RG16F:
2700 if (!_mesa_has_half_float_textures(ctx))
2701 break;
2702 return GL_RG;
2703 case GL_RG32F:
2704 if (!_mesa_has_float_textures(ctx))
2705 break;
2706 return GL_RG;
2707 case GL_RG8I:
2708 case GL_RG8UI:
2709 case GL_RG16I:
2710 case GL_RG16UI:
2711 case GL_RG32I:
2712 case GL_RG32UI:
2713 if (!_mesa_has_integer_textures(ctx))
2714 break;
2715 FALLTHROUGH;
2716 case GL_RG:
2717 case GL_RG8:
2718 case GL_RG16:
2719 case GL_COMPRESSED_RG:
2720 return GL_RG;
2721 default:
2722 ; /* fallthrough */
2723 }
2724 }
2725
2726 if (_mesa_has_texture_shared_exponent(ctx)) {
2727 switch (internalFormat) {
2728 case GL_RGB9_E5:
2729 return GL_RGB;
2730 default:
2731 ; /* fallthrough */
2732 }
2733 }
2734
2735 if (_mesa_has_packed_float(ctx)) {
2736 switch (internalFormat) {
2737 case GL_R11F_G11F_B10F:
2738 return GL_RGB;
2739 default:
2740 ; /* fallthrough */
2741 }
2742 }
2743
2744 if (_mesa_has_float_depth_buffer(ctx)) {
2745 switch (internalFormat) {
2746 case GL_DEPTH_COMPONENT32F:
2747 return GL_DEPTH_COMPONENT;
2748 case GL_DEPTH32F_STENCIL8:
2749 return GL_DEPTH_STENCIL;
2750 default:
2751 ; /* fallthrough */
2752 }
2753 }
2754
2755 return -1; /* error */
2756 }
2757
2758 /**
2759 * Returns the effective internal format from a texture format and type.
2760 * This is used by texture image operations internally for validation, when
2761 * the specified internal format is a base (unsized) format.
2762 *
2763 * This method will only return a valid effective internal format if the
2764 * combination of format, type and internal format in base form, is acceptable.
2765 *
2766 * If a single sized internal format is defined in the spec (OpenGL-ES 3.0.4) or
2767 * in extensions, to unambiguously correspond to the given base format, then
2768 * that internal format is returned as the effective. Otherwise, if the
2769 * combination is accepted but a single effective format is not defined, the
2770 * passed base format will be returned instead.
2771 *
2772 * \param format the texture format
2773 * \param type the texture type
2774 */
2775 static GLenum
gles_effective_internal_format_for_format_and_type(GLenum format,GLenum type)2776 gles_effective_internal_format_for_format_and_type(GLenum format,
2777 GLenum type)
2778 {
2779 switch (type) {
2780 case GL_UNSIGNED_BYTE:
2781 switch (format) {
2782 case GL_RGBA:
2783 return GL_RGBA8;
2784 case GL_RGB:
2785 return GL_RGB8;
2786 case GL_RG:
2787 return GL_RG8;
2788 case GL_RED:
2789 return GL_R8;
2790 /* Although LUMINANCE_ALPHA, LUMINANCE and ALPHA appear in table 3.12,
2791 * (section 3.8 Texturing, page 128 of the OpenGL-ES 3.0.4) as effective
2792 * internal formats, they do not correspond to GL constants, so the base
2793 * format is returned instead.
2794 */
2795 case GL_BGRA:
2796 case GL_LUMINANCE_ALPHA:
2797 case GL_LUMINANCE:
2798 case GL_ALPHA:
2799 return format;
2800 }
2801 break;
2802
2803 case GL_UNSIGNED_SHORT_4_4_4_4:
2804 if (format == GL_RGBA)
2805 return GL_RGBA4;
2806 break;
2807
2808 case GL_UNSIGNED_SHORT_5_5_5_1:
2809 if (format == GL_RGBA)
2810 return GL_RGB5_A1;
2811 break;
2812
2813 case GL_UNSIGNED_SHORT_5_6_5:
2814 if (format == GL_RGB)
2815 return GL_RGB565;
2816 break;
2817
2818 /* OES_packed_depth_stencil */
2819 case GL_UNSIGNED_INT_24_8:
2820 if (format == GL_DEPTH_STENCIL)
2821 return GL_DEPTH24_STENCIL8;
2822 break;
2823
2824 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
2825 if (format == GL_DEPTH_STENCIL)
2826 return GL_DEPTH32F_STENCIL8;
2827 break;
2828
2829 case GL_UNSIGNED_SHORT:
2830 if (format == GL_DEPTH_COMPONENT)
2831 return GL_DEPTH_COMPONENT16;
2832 break;
2833
2834 case GL_UNSIGNED_INT:
2835 /* It can be DEPTH_COMPONENT16 or DEPTH_COMPONENT24, so just return
2836 * the format.
2837 */
2838 if (format == GL_DEPTH_COMPONENT)
2839 return format;
2840 break;
2841
2842 /* OES_texture_float and OES_texture_half_float */
2843 case GL_FLOAT:
2844 if (format == GL_DEPTH_COMPONENT)
2845 return GL_DEPTH_COMPONENT32F;
2846 FALLTHROUGH;
2847 case GL_HALF_FLOAT_OES:
2848 switch (format) {
2849 case GL_RGBA:
2850 case GL_RGB:
2851 case GL_LUMINANCE_ALPHA:
2852 case GL_LUMINANCE:
2853 case GL_ALPHA:
2854 case GL_RED:
2855 case GL_RG:
2856 return format;
2857 }
2858 break;
2859 case GL_HALF_FLOAT:
2860 switch (format) {
2861 case GL_RG:
2862 case GL_RED:
2863 return format;
2864 }
2865 break;
2866
2867 /* GL_EXT_texture_type_2_10_10_10_REV */
2868 case GL_UNSIGNED_INT_2_10_10_10_REV:
2869 switch (format) {
2870 case GL_RGBA:
2871 case GL_RGB:
2872 return format;
2873 }
2874 break;
2875
2876 default:
2877 /* fall through and return NONE */
2878 break;
2879 }
2880
2881 return GL_NONE;
2882 }
2883
2884 /**
2885 * Error checking if internalformat for glTex[Sub]Image is valid
2886 * within OpenGL ES 3.2 (or introduced by an ES extension).
2887 *
2888 * Note, further checks in _mesa_gles_error_check_format_and_type
2889 * are required for complete checking between format and type.
2890 */
2891 static GLenum
_mesa_gles_check_internalformat(struct gl_context * ctx,GLenum internalFormat)2892 _mesa_gles_check_internalformat(struct gl_context *ctx,
2893 GLenum internalFormat)
2894 {
2895 switch (internalFormat) {
2896 /* OpenGL ES 2.0 */
2897 case GL_ALPHA:
2898 case GL_LUMINANCE:
2899 case GL_LUMINANCE_ALPHA:
2900 case GL_RGB:
2901 case GL_RGBA:
2902
2903 /* GL_OES_depth_texture */
2904 case GL_DEPTH_COMPONENT:
2905
2906 /* GL_EXT_texture_format_BGRA8888 */
2907 case GL_BGRA:
2908 case GL_BGRA8_EXT:
2909
2910 /* GL_OES_required_internalformat */
2911 case GL_RGB565:
2912 case GL_RGB8:
2913 case GL_RGBA4:
2914 case GL_RGB5_A1:
2915 case GL_RGBA8:
2916 case GL_DEPTH_COMPONENT16:
2917 case GL_DEPTH_COMPONENT24:
2918 case GL_DEPTH_COMPONENT32:
2919 case GL_DEPTH24_STENCIL8:
2920 case GL_RGB10:
2921 case GL_RGB10_A2:
2922 case GL_ALPHA8:
2923 case GL_LUMINANCE8:
2924 case GL_LUMINANCE8_ALPHA8:
2925 case GL_LUMINANCE4_ALPHA4:
2926 return GL_NO_ERROR;
2927
2928 case GL_R8:
2929 case GL_RG8:
2930 case GL_RED:
2931 case GL_RG:
2932 if (!_mesa_has_rg_textures(ctx))
2933 return GL_INVALID_VALUE;
2934 return GL_NO_ERROR;
2935
2936 /* GL_OES_texture_stencil8 */
2937 case GL_STENCIL_INDEX8:
2938 if (!_mesa_has_OES_texture_stencil8(ctx))
2939 return GL_INVALID_VALUE;
2940 return GL_NO_ERROR;
2941
2942 case GL_COMPRESSED_RGBA_BPTC_UNORM:
2943 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
2944 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
2945 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
2946 if (!_mesa_has_EXT_texture_compression_bptc(ctx))
2947 return GL_INVALID_VALUE;
2948 return GL_NO_ERROR;
2949
2950 case GL_COMPRESSED_RED_RGTC1:
2951 case GL_COMPRESSED_SIGNED_RED_RGTC1:
2952 case GL_COMPRESSED_RED_GREEN_RGTC2_EXT:
2953 case GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT:
2954 if (!_mesa_has_EXT_texture_compression_rgtc(ctx))
2955 return GL_INVALID_VALUE;
2956 return GL_NO_ERROR;
2957
2958 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
2959 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
2960 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
2961 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
2962 if (!_mesa_has_EXT_texture_compression_s3tc(ctx))
2963 return GL_INVALID_VALUE;
2964 return GL_NO_ERROR;
2965
2966 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
2967 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
2968 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
2969 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
2970 if (!_mesa_has_EXT_texture_compression_s3tc_srgb(ctx))
2971 return GL_INVALID_VALUE;
2972 return GL_NO_ERROR;
2973
2974 case GL_R16:
2975 case GL_RG16:
2976 case GL_RGB16:
2977 case GL_RGBA16:
2978 if (!_mesa_has_EXT_texture_norm16(ctx))
2979 return GL_INVALID_VALUE;
2980 return GL_NO_ERROR;
2981
2982 case GL_R16_SNORM:
2983 case GL_RG16_SNORM:
2984 case GL_RGB16_SNORM:
2985 case GL_RGBA16_SNORM:
2986 if (!_mesa_has_EXT_texture_norm16(ctx) &&
2987 !_mesa_has_EXT_texture_snorm(ctx))
2988 return GL_INVALID_VALUE;
2989 return GL_NO_ERROR;
2990
2991 case GL_SR8_EXT:
2992 if (!_mesa_has_EXT_texture_sRGB_R8(ctx))
2993 return GL_INVALID_VALUE;
2994 return GL_NO_ERROR;
2995
2996 case GL_SRG8_EXT:
2997 if (!_mesa_has_EXT_texture_sRGB_RG8(ctx))
2998 return GL_INVALID_VALUE;
2999 return GL_NO_ERROR;
3000
3001 /* OpenGL ES 3.0 */
3002 case GL_SRGB8_ALPHA8:
3003 case GL_RGBA8_SNORM:
3004 case GL_RGBA16F:
3005 case GL_RGBA32F:
3006 case GL_RGBA8UI:
3007 case GL_RGBA8I:
3008 case GL_RGBA16UI:
3009 case GL_RGBA16I:
3010 case GL_RGBA32UI:
3011 case GL_RGBA32I:
3012 case GL_RGB10_A2UI:
3013 case GL_SRGB8:
3014 case GL_RGB8_SNORM:
3015 case GL_R11F_G11F_B10F:
3016 case GL_RGB9_E5:
3017 case GL_RGB16F:
3018 case GL_RGB32F:
3019 case GL_RGB8UI:
3020 case GL_RGB8I:
3021 case GL_RGB16UI:
3022 case GL_RGB16I:
3023 case GL_RGB32UI:
3024 case GL_RGB32I:
3025 case GL_RG8_SNORM:
3026 case GL_RG16F:
3027 case GL_RG32F:
3028 case GL_RG8UI:
3029 case GL_RG8I:
3030 case GL_RG16UI:
3031 case GL_RG16I:
3032 case GL_RG32UI:
3033 case GL_RG32I:
3034 case GL_R8_SNORM:
3035 case GL_R16F:
3036 case GL_R32F:
3037 case GL_R8UI:
3038 case GL_R8I:
3039 case GL_R16UI:
3040 case GL_R16I:
3041 case GL_R32UI:
3042 case GL_R32I:
3043 case GL_DEPTH_COMPONENT32F:
3044 case GL_DEPTH32F_STENCIL8:
3045 if (!_mesa_is_gles3(ctx))
3046 return GL_INVALID_VALUE;
3047 return GL_NO_ERROR;
3048
3049 default:
3050 return GL_INVALID_VALUE;
3051 }
3052 }
3053
3054 /**
3055 * Do error checking of format/type combinations for OpenGL ES 3
3056 * glTex[Sub]Image, or ES1/ES2 with GL_OES_required_internalformat.
3057 * \return error code, or GL_NO_ERROR.
3058 */
3059 GLenum
_mesa_gles_error_check_format_and_type(struct gl_context * ctx,GLenum format,GLenum type,GLenum internalFormat)3060 _mesa_gles_error_check_format_and_type(struct gl_context *ctx,
3061 GLenum format, GLenum type,
3062 GLenum internalFormat)
3063 {
3064 /* If internalFormat is an unsized format, then the effective internal
3065 * format derived from format and type should be used instead. Page 127,
3066 * section "3.8 Texturing" of the GLES 3.0.4 spec states:
3067 *
3068 * "if internalformat is a base internal format, the effective
3069 * internal format is a sized internal format that is derived
3070 * from the format and type for internal use by the GL.
3071 * Table 3.12 specifies the mapping of format and type to effective
3072 * internal formats. The effective internal format is used by the GL
3073 * for purposes such as texture completeness or type checks for
3074 * CopyTex* commands. In these cases, the GL is required to operate
3075 * as if the effective internal format was used as the internalformat
3076 * when specifying the texture data."
3077 */
3078 if (_mesa_is_enum_format_unsized(internalFormat)) {
3079 GLenum effectiveInternalFormat =
3080 gles_effective_internal_format_for_format_and_type(format, type);
3081
3082 if (effectiveInternalFormat == GL_NONE)
3083 return GL_INVALID_OPERATION;
3084
3085 GLenum baseInternalFormat;
3086 if (internalFormat == GL_BGRA) {
3087 /* Unfortunately, _mesa_base_tex_format returns a base format of
3088 * GL_RGBA for GL_BGRA. This makes perfect sense if you're
3089 * asking the question, "what channels does this format have?"
3090 * However, if we're trying to determine if two internal formats
3091 * match in the ES3 sense, we actually want GL_BGRA.
3092 */
3093 baseInternalFormat = GL_BGRA;
3094 } else {
3095 baseInternalFormat =
3096 _mesa_base_tex_format(ctx, effectiveInternalFormat);
3097 }
3098
3099 if (internalFormat != baseInternalFormat)
3100 return GL_INVALID_OPERATION;
3101
3102 internalFormat = effectiveInternalFormat;
3103 }
3104
3105 /* The GLES variant of EXT_texture_compression_s3tc is very vague and
3106 * doesn't list valid types. Just do exactly what the spec says.
3107 */
3108 if (internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT ||
3109 internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT ||
3110 internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT ||
3111 internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3112 return format == GL_RGB || format == GL_RGBA ? GL_NO_ERROR :
3113 GL_INVALID_OPERATION;
3114
3115 /* Before checking for the combination, verify that
3116 * given internalformat is legal for OpenGL ES.
3117 */
3118 GLenum internal_format_error =
3119 _mesa_gles_check_internalformat(ctx, internalFormat);
3120
3121 if (internal_format_error != GL_NO_ERROR)
3122 return internal_format_error;
3123
3124 switch (format) {
3125 case GL_BGRA:
3126 if (type != GL_UNSIGNED_BYTE ||
3127 (internalFormat != GL_BGRA &&
3128 internalFormat != GL_RGBA8 &&
3129 internalFormat != GL_BGRA8_EXT &&
3130 internalFormat != GL_SRGB8_ALPHA8))
3131 return GL_INVALID_OPERATION;
3132 break;
3133
3134 case GL_BGR:
3135 if (type != GL_UNSIGNED_BYTE ||
3136 (internalFormat != GL_RGB8 &&
3137 internalFormat != GL_SRGB8))
3138 return GL_INVALID_OPERATION;
3139 break;
3140
3141 case GL_RGBA:
3142 switch (type) {
3143 case GL_UNSIGNED_BYTE:
3144 switch (internalFormat) {
3145 case GL_RGBA:
3146 case GL_RGBA8:
3147 case GL_RGB5_A1:
3148 case GL_RGBA4:
3149 break;
3150 case GL_SRGB8_ALPHA8:
3151 if (ctx->Version <= 20)
3152 return GL_INVALID_OPERATION;
3153 break;
3154 case GL_COMPRESSED_RGBA_BPTC_UNORM:
3155 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
3156 break;
3157 default:
3158 return GL_INVALID_OPERATION;
3159 }
3160 break;
3161
3162 case GL_BYTE:
3163 if (ctx->Version <= 20 || internalFormat != GL_RGBA8_SNORM)
3164 return GL_INVALID_OPERATION;
3165 break;
3166
3167 case GL_UNSIGNED_SHORT:
3168 if (internalFormat != GL_RGBA16)
3169 return GL_INVALID_OPERATION;
3170 break;
3171
3172 case GL_SHORT:
3173 if (internalFormat != GL_RGBA16_SNORM)
3174 return GL_INVALID_OPERATION;
3175 break;
3176
3177 case GL_UNSIGNED_SHORT_4_4_4_4:
3178 switch (internalFormat) {
3179 case GL_RGBA:
3180 case GL_RGBA4:
3181 break;
3182 default:
3183 return GL_INVALID_OPERATION;
3184 }
3185 break;
3186
3187 case GL_UNSIGNED_SHORT_5_5_5_1:
3188 switch (internalFormat) {
3189 case GL_RGBA:
3190 case GL_RGB5_A1:
3191 break;
3192 default:
3193 return GL_INVALID_OPERATION;
3194 }
3195 break;
3196
3197 case GL_UNSIGNED_INT_2_10_10_10_REV:
3198 switch (internalFormat) {
3199 case GL_RGBA:
3200 case GL_RGB10_A2:
3201 case GL_RGB5_A1:
3202 if (!_mesa_has_texture_type_2_10_10_10_REV(ctx))
3203 return GL_INVALID_OPERATION;
3204 break;
3205 default:
3206 return GL_INVALID_OPERATION;
3207 }
3208 break;
3209
3210 case GL_HALF_FLOAT:
3211 if (ctx->Version <= 20 || internalFormat != GL_RGBA16F)
3212 return GL_INVALID_OPERATION;
3213 break;
3214
3215 case GL_FLOAT:
3216 switch (internalFormat) {
3217 case GL_RGBA16F:
3218 case GL_RGBA32F:
3219 if (ctx->Version <= 20)
3220 return GL_INVALID_OPERATION;
3221 break;
3222 case GL_RGBA:
3223 if (!_mesa_has_OES_texture_float(ctx) || internalFormat != format)
3224 return GL_INVALID_OPERATION;
3225 break;
3226 default:
3227 return GL_INVALID_OPERATION;
3228 }
3229 break;
3230
3231 case GL_HALF_FLOAT_OES:
3232 if (!_mesa_has_OES_texture_half_float(ctx) || internalFormat != format)
3233 return GL_INVALID_OPERATION;
3234 break;
3235 default:
3236 return GL_INVALID_OPERATION;
3237 }
3238 break;
3239
3240 case GL_RGBA_INTEGER:
3241 if (ctx->Version <= 20)
3242 return GL_INVALID_OPERATION;
3243 switch (type) {
3244 case GL_UNSIGNED_BYTE:
3245 if (internalFormat != GL_RGBA8UI)
3246 return GL_INVALID_OPERATION;
3247 break;
3248
3249 case GL_BYTE:
3250 if (internalFormat != GL_RGBA8I)
3251 return GL_INVALID_OPERATION;
3252 break;
3253
3254 case GL_UNSIGNED_SHORT:
3255 if (internalFormat != GL_RGBA16UI)
3256 return GL_INVALID_OPERATION;
3257 break;
3258
3259 case GL_SHORT:
3260 if (internalFormat != GL_RGBA16I)
3261 return GL_INVALID_OPERATION;
3262 break;
3263
3264 case GL_UNSIGNED_INT:
3265 if (internalFormat != GL_RGBA32UI)
3266 return GL_INVALID_OPERATION;
3267 break;
3268
3269 case GL_INT:
3270 if (internalFormat != GL_RGBA32I)
3271 return GL_INVALID_OPERATION;
3272 break;
3273
3274 case GL_UNSIGNED_INT_2_10_10_10_REV:
3275 if (internalFormat != GL_RGB10_A2UI)
3276 return GL_INVALID_OPERATION;
3277 break;
3278
3279 default:
3280 return GL_INVALID_OPERATION;
3281 }
3282 break;
3283
3284 case GL_RGB:
3285 switch (type) {
3286 case GL_UNSIGNED_BYTE:
3287 switch (internalFormat) {
3288 case GL_RGB:
3289 case GL_RGB8:
3290 case GL_RGB565:
3291 break;
3292 case GL_SRGB8:
3293 if (ctx->Version <= 20)
3294 return GL_INVALID_OPERATION;
3295 break;
3296 default:
3297 return GL_INVALID_OPERATION;
3298 }
3299 break;
3300
3301 case GL_BYTE:
3302 if (ctx->Version <= 20 || internalFormat != GL_RGB8_SNORM)
3303 return GL_INVALID_OPERATION;
3304 break;
3305
3306 case GL_UNSIGNED_SHORT:
3307 if (internalFormat != GL_RGB16)
3308 return GL_INVALID_OPERATION;
3309 break;
3310
3311 case GL_SHORT:
3312 if (internalFormat != GL_RGB16_SNORM)
3313 return GL_INVALID_OPERATION;
3314 break;
3315
3316 case GL_UNSIGNED_SHORT_5_6_5:
3317 switch (internalFormat) {
3318 case GL_RGB:
3319 case GL_RGB565:
3320 break;
3321 default:
3322 return GL_INVALID_OPERATION;
3323 }
3324 break;
3325
3326 case GL_UNSIGNED_INT_10F_11F_11F_REV:
3327 if (ctx->Version <= 20 || internalFormat != GL_R11F_G11F_B10F)
3328 return GL_INVALID_OPERATION;
3329 break;
3330
3331 case GL_UNSIGNED_INT_5_9_9_9_REV:
3332 if (internalFormat != GL_RGB9_E5)
3333 return GL_INVALID_OPERATION;
3334 break;
3335
3336 case GL_HALF_FLOAT:
3337 if (ctx->Version <= 20)
3338 return GL_INVALID_OPERATION;
3339 switch (internalFormat) {
3340 case GL_RGB16F:
3341 case GL_R11F_G11F_B10F:
3342 case GL_RGB9_E5:
3343 break;
3344 default:
3345 return GL_INVALID_OPERATION;
3346 }
3347 break;
3348
3349 case GL_FLOAT:
3350 switch (internalFormat) {
3351 case GL_RGB16F:
3352 case GL_RGB32F:
3353 case GL_R11F_G11F_B10F:
3354 case GL_RGB9_E5:
3355 if (ctx->Version <= 20)
3356 return GL_INVALID_OPERATION;
3357 break;
3358 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
3359 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
3360 break;
3361 case GL_RGB:
3362 if (!_mesa_has_OES_texture_float(ctx) || internalFormat != format)
3363 return GL_INVALID_OPERATION;
3364 break;
3365 default:
3366 return GL_INVALID_OPERATION;
3367 }
3368 break;
3369
3370 case GL_HALF_FLOAT_OES:
3371 if (!_mesa_has_OES_texture_half_float(ctx) || internalFormat != format)
3372 return GL_INVALID_OPERATION;
3373 break;
3374
3375 case GL_UNSIGNED_INT_2_10_10_10_REV:
3376 switch (internalFormat) {
3377 case GL_RGB:
3378 case GL_RGB10:
3379 case GL_RGB8:
3380 case GL_RGB565:
3381 /* GL_EXT_texture_type_2_10_10_10_REV allows GL_RGB even though
3382 * GLES3 doesn't, and GL_OES_required_internalformat extends that
3383 * to allow the sized RGB internalformats as well.
3384 */
3385 if (!_mesa_has_texture_type_2_10_10_10_REV(ctx))
3386 return GL_INVALID_OPERATION;
3387 break;
3388 default:
3389 return GL_INVALID_OPERATION;
3390 }
3391 break;
3392
3393 default:
3394 return GL_INVALID_OPERATION;
3395 }
3396 break;
3397
3398 case GL_RGB_INTEGER:
3399 if (ctx->Version <= 20)
3400 return GL_INVALID_OPERATION;
3401 switch (type) {
3402 case GL_UNSIGNED_BYTE:
3403 if (internalFormat != GL_RGB8UI)
3404 return GL_INVALID_OPERATION;
3405 break;
3406
3407 case GL_BYTE:
3408 if (internalFormat != GL_RGB8I)
3409 return GL_INVALID_OPERATION;
3410 break;
3411
3412 case GL_UNSIGNED_SHORT:
3413 if (internalFormat != GL_RGB16UI)
3414 return GL_INVALID_OPERATION;
3415 break;
3416
3417 case GL_SHORT:
3418 if (internalFormat != GL_RGB16I)
3419 return GL_INVALID_OPERATION;
3420 break;
3421
3422 case GL_UNSIGNED_INT:
3423 if (internalFormat != GL_RGB32UI)
3424 return GL_INVALID_OPERATION;
3425 break;
3426
3427 case GL_INT:
3428 if (internalFormat != GL_RGB32I)
3429 return GL_INVALID_OPERATION;
3430 break;
3431
3432 default:
3433 return GL_INVALID_OPERATION;
3434 }
3435 break;
3436
3437 case GL_RG:
3438 if (!_mesa_has_rg_textures(ctx))
3439 return GL_INVALID_OPERATION;
3440 switch (type) {
3441 case GL_UNSIGNED_BYTE:
3442 if (internalFormat != GL_RG8 &&
3443 internalFormat != GL_COMPRESSED_RED_GREEN_RGTC2_EXT &&
3444 internalFormat != GL_SRG8_EXT)
3445 return GL_INVALID_OPERATION;
3446 break;
3447
3448 case GL_BYTE:
3449 if (internalFormat != GL_RG8_SNORM &&
3450 internalFormat != GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT)
3451 return GL_INVALID_OPERATION;
3452 break;
3453
3454 case GL_UNSIGNED_SHORT:
3455 if (internalFormat != GL_RG16)
3456 return GL_INVALID_OPERATION;
3457 break;
3458
3459 case GL_SHORT:
3460 if (internalFormat != GL_RG16_SNORM)
3461 return GL_INVALID_OPERATION;
3462 break;
3463
3464 case GL_HALF_FLOAT:
3465 case GL_HALF_FLOAT_OES:
3466 switch (internalFormat) {
3467 case GL_RG16F:
3468 if (ctx->Version <= 20)
3469 return GL_INVALID_OPERATION;
3470 break;
3471 case GL_RG:
3472 if (!_mesa_has_OES_texture_half_float(ctx))
3473 return GL_INVALID_OPERATION;
3474 break;
3475 default:
3476 return GL_INVALID_OPERATION;
3477 }
3478 break;
3479
3480 case GL_FLOAT:
3481 switch (internalFormat) {
3482 case GL_RG16F:
3483 case GL_RG32F:
3484 break;
3485 case GL_RG:
3486 if (!_mesa_has_OES_texture_float(ctx))
3487 return GL_INVALID_OPERATION;
3488 break;
3489 default:
3490 return GL_INVALID_OPERATION;
3491 }
3492 break;
3493
3494 default:
3495 return GL_INVALID_OPERATION;
3496 }
3497 break;
3498
3499 case GL_RG_INTEGER:
3500 if (ctx->Version <= 20)
3501 return GL_INVALID_OPERATION;
3502 switch (type) {
3503 case GL_UNSIGNED_BYTE:
3504 if (internalFormat != GL_RG8UI)
3505 return GL_INVALID_OPERATION;
3506 break;
3507
3508 case GL_BYTE:
3509 if (internalFormat != GL_RG8I)
3510 return GL_INVALID_OPERATION;
3511 break;
3512
3513 case GL_UNSIGNED_SHORT:
3514 if (internalFormat != GL_RG16UI)
3515 return GL_INVALID_OPERATION;
3516 break;
3517
3518 case GL_SHORT:
3519 if (internalFormat != GL_RG16I)
3520 return GL_INVALID_OPERATION;
3521 break;
3522
3523 case GL_UNSIGNED_INT:
3524 if (internalFormat != GL_RG32UI)
3525 return GL_INVALID_OPERATION;
3526 break;
3527
3528 case GL_INT:
3529 if (internalFormat != GL_RG32I)
3530 return GL_INVALID_OPERATION;
3531 break;
3532
3533 default:
3534 return GL_INVALID_OPERATION;
3535 }
3536 break;
3537
3538 case GL_RED:
3539 if (!_mesa_has_rg_textures(ctx))
3540 return GL_INVALID_OPERATION;
3541 switch (type) {
3542 case GL_UNSIGNED_BYTE:
3543 if (internalFormat != GL_R8 &&
3544 internalFormat != GL_SR8_EXT &&
3545 internalFormat != GL_COMPRESSED_RED_RGTC1_EXT) {
3546 return GL_INVALID_OPERATION;
3547 }
3548 break;
3549
3550 case GL_BYTE:
3551 if (internalFormat != GL_R8_SNORM &&
3552 internalFormat != GL_COMPRESSED_SIGNED_RED_RGTC1_EXT)
3553 return GL_INVALID_OPERATION;
3554 break;
3555
3556 case GL_UNSIGNED_SHORT:
3557 if (internalFormat != GL_R16)
3558 return GL_INVALID_OPERATION;
3559 break;
3560
3561 case GL_SHORT:
3562 if (internalFormat != GL_R16_SNORM)
3563 return GL_INVALID_OPERATION;
3564 break;
3565
3566 case GL_HALF_FLOAT:
3567 case GL_HALF_FLOAT_OES:
3568 switch (internalFormat) {
3569 case GL_R16F:
3570 if (ctx->Version <= 20)
3571 return GL_INVALID_OPERATION;
3572 break;
3573 case GL_RG:
3574 case GL_RED:
3575 if (!_mesa_has_OES_texture_half_float(ctx))
3576 return GL_INVALID_OPERATION;
3577 break;
3578 default:
3579 return GL_INVALID_OPERATION;
3580 }
3581 break;
3582
3583 case GL_FLOAT:
3584 switch (internalFormat) {
3585 case GL_R16F:
3586 case GL_R32F:
3587 break;
3588 case GL_RED:
3589 if (!_mesa_has_OES_texture_float(ctx))
3590 return GL_INVALID_OPERATION;
3591 break;
3592 default:
3593 return GL_INVALID_OPERATION;
3594 }
3595 break;
3596
3597 default:
3598 return GL_INVALID_OPERATION;
3599 }
3600 break;
3601
3602 case GL_RED_INTEGER:
3603 if (ctx->Version <= 20)
3604 return GL_INVALID_OPERATION;
3605 switch (type) {
3606 case GL_UNSIGNED_BYTE:
3607 if (internalFormat != GL_R8UI)
3608 return GL_INVALID_OPERATION;
3609 break;
3610
3611 case GL_BYTE:
3612 if (internalFormat != GL_R8I)
3613 return GL_INVALID_OPERATION;
3614 break;
3615
3616 case GL_UNSIGNED_SHORT:
3617 if (internalFormat != GL_R16UI)
3618 return GL_INVALID_OPERATION;
3619 break;
3620
3621 case GL_SHORT:
3622 if (internalFormat != GL_R16I)
3623 return GL_INVALID_OPERATION;
3624 break;
3625
3626 case GL_UNSIGNED_INT:
3627 if (internalFormat != GL_R32UI)
3628 return GL_INVALID_OPERATION;
3629 break;
3630
3631 case GL_INT:
3632 if (internalFormat != GL_R32I)
3633 return GL_INVALID_OPERATION;
3634 break;
3635
3636 default:
3637 return GL_INVALID_OPERATION;
3638 }
3639 break;
3640
3641 case GL_DEPTH_COMPONENT:
3642 switch (type) {
3643 case GL_UNSIGNED_SHORT:
3644 if (internalFormat != GL_DEPTH_COMPONENT &&
3645 internalFormat != GL_DEPTH_COMPONENT16)
3646 return GL_INVALID_OPERATION;
3647 break;
3648
3649 case GL_UNSIGNED_INT:
3650 switch (internalFormat) {
3651 case GL_DEPTH_COMPONENT:
3652 case GL_DEPTH_COMPONENT16:
3653 case GL_DEPTH_COMPONENT24:
3654 break;
3655 default:
3656 return GL_INVALID_OPERATION;
3657 }
3658 break;
3659
3660 case GL_FLOAT:
3661 if (ctx->Version <= 20 || internalFormat != GL_DEPTH_COMPONENT32F)
3662 return GL_INVALID_OPERATION;
3663 break;
3664
3665 default:
3666 return GL_INVALID_OPERATION;
3667 }
3668 break;
3669
3670 case GL_DEPTH_STENCIL:
3671 switch (type) {
3672 case GL_UNSIGNED_INT_24_8:
3673 if (internalFormat != GL_DEPTH_STENCIL &&
3674 internalFormat != GL_DEPTH24_STENCIL8)
3675 return GL_INVALID_OPERATION;
3676 break;
3677
3678 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
3679 if (ctx->Version <= 20 || internalFormat != GL_DEPTH32F_STENCIL8)
3680 return GL_INVALID_OPERATION;
3681 break;
3682
3683 default:
3684 return GL_INVALID_OPERATION;
3685 }
3686 break;
3687
3688 case GL_STENCIL_INDEX:
3689 if (type != GL_UNSIGNED_BYTE ||
3690 internalFormat != GL_STENCIL_INDEX8) {
3691 return GL_INVALID_OPERATION;
3692 }
3693 break;
3694
3695 case GL_ALPHA:
3696 case GL_LUMINANCE:
3697 case GL_LUMINANCE_ALPHA:
3698 switch (type) {
3699 case GL_FLOAT:
3700 if (!_mesa_has_OES_texture_float(ctx) || internalFormat != format)
3701 return GL_INVALID_OPERATION;
3702 break;
3703 case GL_HALF_FLOAT_OES:
3704 if (!_mesa_has_OES_texture_half_float(ctx) || internalFormat != format)
3705 return GL_INVALID_OPERATION;
3706 break;
3707 case GL_UNSIGNED_BYTE:
3708 if (!(format == internalFormat ||
3709 (format == GL_ALPHA && internalFormat == GL_ALPHA8) ||
3710 (format == GL_LUMINANCE && internalFormat == GL_LUMINANCE8) ||
3711 (format == GL_LUMINANCE_ALPHA &&
3712 ((internalFormat == GL_LUMINANCE8_ALPHA8) ||
3713 (internalFormat == GL_LUMINANCE4_ALPHA4))))) {
3714 return GL_INVALID_OPERATION;
3715 }
3716 break;
3717 default:
3718 return GL_INVALID_OPERATION;
3719 }
3720 break;
3721 }
3722
3723 return GL_NO_ERROR;
3724 }
3725
3726 static void
set_swizzle(uint8_t * swizzle,int x,int y,int z,int w)3727 set_swizzle(uint8_t *swizzle, int x, int y, int z, int w)
3728 {
3729 swizzle[MESA_FORMAT_SWIZZLE_X] = x;
3730 swizzle[MESA_FORMAT_SWIZZLE_Y] = y;
3731 swizzle[MESA_FORMAT_SWIZZLE_Z] = z;
3732 swizzle[MESA_FORMAT_SWIZZLE_W] = w;
3733 }
3734
3735 static bool
get_swizzle_from_gl_format(GLenum format,uint8_t * swizzle)3736 get_swizzle_from_gl_format(GLenum format, uint8_t *swizzle)
3737 {
3738 switch (format) {
3739 case GL_RGBA:
3740 case GL_RGBA_INTEGER:
3741 set_swizzle(swizzle, 0, 1, 2, 3);
3742 return true;
3743 case GL_BGRA:
3744 case GL_BGRA_INTEGER:
3745 set_swizzle(swizzle, 2, 1, 0, 3);
3746 return true;
3747 case GL_ABGR_EXT:
3748 set_swizzle(swizzle, 3, 2, 1, 0);
3749 return true;
3750 case GL_RGB:
3751 case GL_RGB_INTEGER:
3752 set_swizzle(swizzle, 0, 1, 2, 5);
3753 return true;
3754 case GL_BGR:
3755 case GL_BGR_INTEGER:
3756 set_swizzle(swizzle, 2, 1, 0, 5);
3757 return true;
3758 case GL_LUMINANCE_ALPHA:
3759 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
3760 set_swizzle(swizzle, 0, 0, 0, 1);
3761 return true;
3762 case GL_RG:
3763 case GL_RG_INTEGER:
3764 set_swizzle(swizzle, 0, 1, 4, 5);
3765 return true;
3766 case GL_RED:
3767 case GL_RED_INTEGER:
3768 set_swizzle(swizzle, 0, 4, 4, 5);
3769 return true;
3770 case GL_GREEN:
3771 case GL_GREEN_INTEGER:
3772 set_swizzle(swizzle, 4, 0, 4, 5);
3773 return true;
3774 case GL_BLUE:
3775 case GL_BLUE_INTEGER:
3776 set_swizzle(swizzle, 4, 4, 0, 5);
3777 return true;
3778 case GL_ALPHA:
3779 case GL_ALPHA_INTEGER:
3780 set_swizzle(swizzle, 4, 4, 4, 0);
3781 return true;
3782 case GL_LUMINANCE:
3783 case GL_LUMINANCE_INTEGER_EXT:
3784 set_swizzle(swizzle, 0, 0, 0, 5);
3785 return true;
3786 case GL_INTENSITY:
3787 set_swizzle(swizzle, 0, 0, 0, 0);
3788 return true;
3789 case GL_DEPTH_COMPONENT:
3790 set_swizzle(swizzle, 0, 6, 6, 6);
3791 return true;
3792 case GL_STENCIL_INDEX:
3793 set_swizzle(swizzle, 6, 0, 6, 6);
3794 return true;
3795 default:
3796 return false;
3797 }
3798 }
3799
3800 bool
_mesa_swap_bytes_in_type_enum(GLenum * type)3801 _mesa_swap_bytes_in_type_enum(GLenum *type)
3802 {
3803 switch (*type) {
3804 case GL_UNSIGNED_INT_8_8_8_8:
3805 *type = GL_UNSIGNED_INT_8_8_8_8_REV;
3806 return true;
3807 case GL_UNSIGNED_INT_8_8_8_8_REV:
3808 *type = GL_UNSIGNED_INT_8_8_8_8;
3809 return true;
3810 case GL_UNSIGNED_SHORT_8_8_MESA:
3811 *type = GL_UNSIGNED_SHORT_8_8_REV_MESA;
3812 return true;
3813 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
3814 *type = GL_UNSIGNED_SHORT_8_8_MESA;
3815 return true;
3816 case GL_BYTE:
3817 case GL_UNSIGNED_BYTE:
3818 /* format/types that are arrays of 8-bit values are unaffected by
3819 * swapBytes.
3820 */
3821 return true;
3822 default:
3823 /* swapping bytes on 4444, 1555, or >8 bit per channel types etc. will
3824 * never match a Mesa format.
3825 */
3826 return false;
3827 }
3828 }
3829
3830 /**
3831 * Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
3832 * GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
3833 * otherwise (for non-array formats).
3834 *
3835 * This function will typically be used to compute a mesa format from a GL type
3836 * so we can then call _mesa_format_convert. This function does
3837 * not consider byte swapping, so it returns types assuming that no byte
3838 * swapping is involved. If byte swapping is involved then clients are supposed
3839 * to handle that on their side before calling _mesa_format_convert.
3840 *
3841 * This function returns an uint32_t that can pack a mesa_format or a
3842 * mesa_array_format. Clients must check the mesa array format bit
3843 * (MESA_ARRAY_FORMAT_BIT) on the return value to know if the returned
3844 * format is a mesa_array_format or a mesa_format.
3845 */
3846 uint32_t
_mesa_format_from_format_and_type(GLenum format,GLenum type)3847 _mesa_format_from_format_and_type(GLenum format, GLenum type)
3848 {
3849 bool is_array_format = true;
3850 uint8_t swizzle[4];
3851 bool normalized = false, is_float = false, is_signed = false;
3852 int num_channels = 0, type_size = 0;
3853
3854 if (format == GL_COLOR_INDEX)
3855 return MESA_FORMAT_NONE;
3856
3857 /* Extract array format type information from the OpenGL data type */
3858 switch (type) {
3859 case GL_UNSIGNED_BYTE:
3860 type_size = 1;
3861 break;
3862 case GL_BYTE:
3863 type_size = 1;
3864 is_signed = true;
3865 break;
3866 case GL_UNSIGNED_SHORT:
3867 type_size = 2;
3868 break;
3869 case GL_SHORT:
3870 type_size = 2;
3871 is_signed = true;
3872 break;
3873 case GL_UNSIGNED_INT:
3874 type_size = 4;
3875 break;
3876 case GL_INT:
3877 type_size = 4;
3878 is_signed = true;
3879 break;
3880 case GL_HALF_FLOAT:
3881 case GL_HALF_FLOAT_OES:
3882 type_size = 2;
3883 is_signed = true;
3884 is_float = true;
3885 break;
3886 case GL_FLOAT:
3887 type_size = 4;
3888 is_signed = true;
3889 is_float = true;
3890 break;
3891 default:
3892 is_array_format = false;
3893 break;
3894 }
3895
3896 /* Extract array format swizzle information from the OpenGL format */
3897 if (is_array_format)
3898 is_array_format = get_swizzle_from_gl_format(format, swizzle);
3899
3900 /* If this is an array format type after checking data type and format,
3901 * create the array format
3902 */
3903 if (is_array_format) {
3904 enum mesa_array_format_base_format bf;
3905 switch (format) {
3906 case GL_DEPTH_COMPONENT:
3907 bf = MESA_ARRAY_FORMAT_BASE_FORMAT_DEPTH;
3908 break;
3909 case GL_STENCIL_INDEX:
3910 bf = MESA_ARRAY_FORMAT_BASE_FORMAT_STENCIL;
3911 break;
3912 default:
3913 bf = MESA_ARRAY_FORMAT_BASE_FORMAT_RGBA_VARIANTS;
3914 break;
3915 }
3916
3917 normalized = !(_mesa_is_enum_format_integer(format) ||
3918 format == GL_STENCIL_INDEX);
3919 num_channels = _mesa_components_in_format(format);
3920
3921 return MESA_ARRAY_FORMAT(bf, type_size, is_signed, is_float,
3922 normalized, num_channels,
3923 swizzle[0], swizzle[1], swizzle[2], swizzle[3]);
3924 }
3925
3926 /* Otherwise this is not an array format, so return the mesa_format
3927 * matching the OpenGL format and data type
3928 */
3929 switch (type) {
3930 case GL_UNSIGNED_SHORT_5_6_5:
3931 if (format == GL_RGB)
3932 return MESA_FORMAT_B5G6R5_UNORM;
3933 else if (format == GL_BGR)
3934 return MESA_FORMAT_R5G6B5_UNORM;
3935 else if (format == GL_RGB_INTEGER)
3936 return MESA_FORMAT_B5G6R5_UINT;
3937 break;
3938 case GL_UNSIGNED_SHORT_5_6_5_REV:
3939 if (format == GL_RGB)
3940 return MESA_FORMAT_R5G6B5_UNORM;
3941 else if (format == GL_BGR)
3942 return MESA_FORMAT_B5G6R5_UNORM;
3943 else if (format == GL_RGB_INTEGER)
3944 return MESA_FORMAT_R5G6B5_UINT;
3945 break;
3946 case GL_UNSIGNED_SHORT_4_4_4_4:
3947 if (format == GL_RGBA)
3948 return MESA_FORMAT_A4B4G4R4_UNORM;
3949 else if (format == GL_BGRA)
3950 return MESA_FORMAT_A4R4G4B4_UNORM;
3951 else if (format == GL_ABGR_EXT)
3952 return MESA_FORMAT_R4G4B4A4_UNORM;
3953 else if (format == GL_RGBA_INTEGER)
3954 return MESA_FORMAT_A4B4G4R4_UINT;
3955 else if (format == GL_BGRA_INTEGER)
3956 return MESA_FORMAT_A4R4G4B4_UINT;
3957 break;
3958 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
3959 if (format == GL_RGBA)
3960 return MESA_FORMAT_R4G4B4A4_UNORM;
3961 else if (format == GL_BGRA)
3962 return MESA_FORMAT_B4G4R4A4_UNORM;
3963 else if (format == GL_ABGR_EXT)
3964 return MESA_FORMAT_A4B4G4R4_UNORM;
3965 else if (format == GL_RGBA_INTEGER)
3966 return MESA_FORMAT_R4G4B4A4_UINT;
3967 else if (format == GL_BGRA_INTEGER)
3968 return MESA_FORMAT_B4G4R4A4_UINT;
3969 break;
3970 case GL_UNSIGNED_SHORT_5_5_5_1:
3971 if (format == GL_RGBA)
3972 return MESA_FORMAT_A1B5G5R5_UNORM;
3973 else if (format == GL_BGRA)
3974 return MESA_FORMAT_A1R5G5B5_UNORM;
3975 else if (format == GL_RGBA_INTEGER)
3976 return MESA_FORMAT_A1B5G5R5_UINT;
3977 else if (format == GL_BGRA_INTEGER)
3978 return MESA_FORMAT_A1R5G5B5_UINT;
3979 break;
3980 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
3981 if (format == GL_RGBA)
3982 return MESA_FORMAT_R5G5B5A1_UNORM;
3983 else if (format == GL_BGRA)
3984 return MESA_FORMAT_B5G5R5A1_UNORM;
3985 else if (format == GL_RGBA_INTEGER)
3986 return MESA_FORMAT_R5G5B5A1_UINT;
3987 else if (format == GL_BGRA_INTEGER)
3988 return MESA_FORMAT_B5G5R5A1_UINT;
3989 break;
3990 case GL_UNSIGNED_BYTE_3_3_2:
3991 if (format == GL_RGB)
3992 return MESA_FORMAT_B2G3R3_UNORM;
3993 else if (format == GL_RGB_INTEGER)
3994 return MESA_FORMAT_B2G3R3_UINT;
3995 break;
3996 case GL_UNSIGNED_BYTE_2_3_3_REV:
3997 if (format == GL_RGB)
3998 return MESA_FORMAT_R3G3B2_UNORM;
3999 else if (format == GL_RGB_INTEGER)
4000 return MESA_FORMAT_R3G3B2_UINT;
4001 break;
4002 case GL_UNSIGNED_INT_5_9_9_9_REV:
4003 if (format == GL_RGB)
4004 return MESA_FORMAT_R9G9B9E5_FLOAT;
4005 break;
4006 case GL_UNSIGNED_INT_10_10_10_2:
4007 if (format == GL_RGBA)
4008 return MESA_FORMAT_A2B10G10R10_UNORM;
4009 else if (format == GL_RGBA_INTEGER)
4010 return MESA_FORMAT_A2B10G10R10_UINT;
4011 else if (format == GL_BGRA)
4012 return MESA_FORMAT_A2R10G10B10_UNORM;
4013 else if (format == GL_BGRA_INTEGER)
4014 return MESA_FORMAT_A2R10G10B10_UINT;
4015 break;
4016 case GL_UNSIGNED_INT_2_10_10_10_REV:
4017 if (format == GL_RGB)
4018 return MESA_FORMAT_R10G10B10X2_UNORM;
4019 if (format == GL_RGBA)
4020 return MESA_FORMAT_R10G10B10A2_UNORM;
4021 else if (format == GL_RGBA_INTEGER)
4022 return MESA_FORMAT_R10G10B10A2_UINT;
4023 else if (format == GL_BGRA)
4024 return MESA_FORMAT_B10G10R10A2_UNORM;
4025 else if (format == GL_BGRA_INTEGER)
4026 return MESA_FORMAT_B10G10R10A2_UINT;
4027 break;
4028 case GL_UNSIGNED_INT_8_8_8_8:
4029 if (format == GL_RGBA)
4030 return MESA_FORMAT_A8B8G8R8_UNORM;
4031 else if (format == GL_BGRA)
4032 return MESA_FORMAT_A8R8G8B8_UNORM;
4033 else if (format == GL_ABGR_EXT)
4034 return MESA_FORMAT_R8G8B8A8_UNORM;
4035 else if (format == GL_RGBA_INTEGER)
4036 return MESA_FORMAT_A8B8G8R8_UINT;
4037 else if (format == GL_BGRA_INTEGER)
4038 return MESA_FORMAT_A8R8G8B8_UINT;
4039 break;
4040 case GL_UNSIGNED_INT_8_8_8_8_REV:
4041 if (format == GL_RGBA)
4042 return MESA_FORMAT_R8G8B8A8_UNORM;
4043 else if (format == GL_BGRA)
4044 return MESA_FORMAT_B8G8R8A8_UNORM;
4045 else if (format == GL_ABGR_EXT)
4046 return MESA_FORMAT_A8B8G8R8_UNORM;
4047 else if (format == GL_RGBA_INTEGER)
4048 return MESA_FORMAT_R8G8B8A8_UINT;
4049 else if (format == GL_BGRA_INTEGER)
4050 return MESA_FORMAT_B8G8R8A8_UINT;
4051 break;
4052 case GL_UNSIGNED_SHORT_8_8_MESA:
4053 if (format == GL_YCBCR_MESA)
4054 return MESA_FORMAT_YCBCR;
4055 break;
4056 case GL_UNSIGNED_SHORT_8_8_REV_MESA:
4057 if (format == GL_YCBCR_MESA)
4058 return MESA_FORMAT_YCBCR_REV;
4059 break;
4060 case GL_UNSIGNED_INT_10F_11F_11F_REV:
4061 if (format == GL_RGB)
4062 return MESA_FORMAT_R11G11B10_FLOAT;
4063 break;
4064 case GL_FLOAT:
4065 if (format == GL_DEPTH_COMPONENT)
4066 return MESA_FORMAT_Z_FLOAT32;
4067 break;
4068 case GL_UNSIGNED_INT:
4069 if (format == GL_DEPTH_COMPONENT)
4070 return MESA_FORMAT_Z_UNORM32;
4071 break;
4072 case GL_UNSIGNED_SHORT:
4073 if (format == GL_DEPTH_COMPONENT)
4074 return MESA_FORMAT_Z_UNORM16;
4075 break;
4076 case GL_UNSIGNED_INT_24_8:
4077 if (format == GL_DEPTH_STENCIL)
4078 return MESA_FORMAT_S8_UINT_Z24_UNORM;
4079 else if (format == GL_DEPTH_COMPONENT)
4080 return MESA_FORMAT_X8_UINT_Z24_UNORM;
4081 break;
4082 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
4083 if (format == GL_DEPTH_STENCIL)
4084 return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
4085 break;
4086 default:
4087 break;
4088 }
4089
4090 fprintf(stderr, "Unsupported format/type: %s/%s\n",
4091 _mesa_enum_to_string(format),
4092 _mesa_enum_to_string(type));
4093
4094 /* If we got here it means that we could not find a Mesa format that
4095 * matches the GL format/type provided. We may need to add a new Mesa
4096 * format in that case.
4097 */
4098 unreachable("Unsupported format");
4099 }
4100
4101 uint32_t
_mesa_tex_format_from_format_and_type(const struct gl_context * ctx,GLenum gl_format,GLenum type)4102 _mesa_tex_format_from_format_and_type(const struct gl_context *ctx,
4103 GLenum gl_format, GLenum type)
4104 {
4105 mesa_format format = _mesa_format_from_format_and_type(gl_format, type);
4106
4107 if (_mesa_format_is_mesa_array_format(format))
4108 format = _mesa_format_from_array_format(format);
4109
4110 if (format == MESA_FORMAT_NONE || !ctx->TextureFormatSupported[format])
4111 return MESA_FORMAT_NONE;
4112
4113 return format;
4114 }
4115
4116 /**
4117 * Returns true if \p internal_format is a sized internal format that
4118 * is marked "Color Renderable" in Table 8.10 of the ES 3.2 specification.
4119 */
4120 bool
_mesa_is_es3_color_renderable(const struct gl_context * ctx,GLenum internal_format)4121 _mesa_is_es3_color_renderable(const struct gl_context *ctx,
4122 GLenum internal_format)
4123 {
4124 switch (internal_format) {
4125 case GL_R8:
4126 case GL_RG8:
4127 case GL_RGB8:
4128 case GL_RGB565:
4129 case GL_RGBA4:
4130 case GL_RGB5_A1:
4131 case GL_RGBA8:
4132 case GL_RGB10_A2:
4133 case GL_RGB10_A2UI:
4134 case GL_SRGB8_ALPHA8:
4135 case GL_R11F_G11F_B10F:
4136 case GL_R8I:
4137 case GL_R8UI:
4138 case GL_R16I:
4139 case GL_R16UI:
4140 case GL_R32I:
4141 case GL_R32UI:
4142 case GL_RG8I:
4143 case GL_RG8UI:
4144 case GL_RG16I:
4145 case GL_RG16UI:
4146 case GL_RG32I:
4147 case GL_RG32UI:
4148 case GL_RGBA8I:
4149 case GL_RGBA8UI:
4150 case GL_RGBA16I:
4151 case GL_RGBA16UI:
4152 case GL_RGBA32I:
4153 case GL_RGBA32UI:
4154 return true;
4155 case GL_R16F:
4156 case GL_RG16F:
4157 case GL_RGB16F:
4158 case GL_RGBA16F:
4159 return _mesa_has_EXT_color_buffer_half_float(ctx);
4160 case GL_R32F:
4161 case GL_RG32F:
4162 case GL_RGBA32F:
4163 return _mesa_has_EXT_color_buffer_float(ctx);
4164 case GL_R16:
4165 case GL_RG16:
4166 case GL_RGBA16:
4167 return _mesa_has_EXT_texture_norm16(ctx);
4168 case GL_R8_SNORM:
4169 case GL_RG8_SNORM:
4170 case GL_RGBA8_SNORM:
4171 return _mesa_has_EXT_render_snorm(ctx);
4172 case GL_R16_SNORM:
4173 case GL_RG16_SNORM:
4174 case GL_RGBA16_SNORM:
4175 return _mesa_has_EXT_texture_norm16(ctx) &&
4176 _mesa_has_EXT_render_snorm(ctx);
4177 case GL_BGRA:
4178 assert(_mesa_has_EXT_texture_format_BGRA8888(ctx));
4179 return true;
4180 case GL_BGRA8_EXT:
4181 assert(_mesa_has_EXT_texture_format_BGRA8888(ctx) &&
4182 _mesa_has_EXT_texture_storage(ctx));
4183 return true;
4184 default:
4185 return false;
4186 }
4187 }
4188
4189 /**
4190 * Returns true if \p internal_format is a sized internal format that
4191 * is marked "Texture Filterable" in Table 8.10 of the ES 3.2 specification.
4192 */
4193 bool
_mesa_is_es3_texture_filterable(const struct gl_context * ctx,GLenum internal_format)4194 _mesa_is_es3_texture_filterable(const struct gl_context *ctx,
4195 GLenum internal_format)
4196 {
4197 switch (internal_format) {
4198 case GL_R8:
4199 case GL_R8_SNORM:
4200 case GL_RG8:
4201 case GL_RG8_SNORM:
4202 case GL_RGB8:
4203 case GL_RGB8_SNORM:
4204 case GL_RGB565:
4205 case GL_RGBA4:
4206 case GL_RGB5_A1:
4207 case GL_RGBA8:
4208 case GL_RGBA8_SNORM:
4209 case GL_RGB10_A2:
4210 case GL_SRGB8:
4211 case GL_SRGB8_ALPHA8:
4212 case GL_R16F:
4213 case GL_RG16F:
4214 case GL_RGB16F:
4215 case GL_RGBA16F:
4216 case GL_R11F_G11F_B10F:
4217 case GL_RGB9_E5:
4218 return true;
4219 case GL_R16:
4220 case GL_R16_SNORM:
4221 case GL_RG16:
4222 case GL_RG16_SNORM:
4223 case GL_RGB16:
4224 case GL_RGB16_SNORM:
4225 case GL_RGBA16:
4226 case GL_RGBA16_SNORM:
4227 return _mesa_has_EXT_texture_norm16(ctx);
4228 case GL_R32F:
4229 case GL_RG32F:
4230 case GL_RGB32F:
4231 case GL_RGBA32F:
4232 /* The OES_texture_float_linear spec says:
4233 *
4234 * "When implemented against OpenGL ES 3.0 or later versions, sized
4235 * 32-bit floating-point formats become texture-filterable. This
4236 * should be noted by, for example, checking the ``TF'' column of
4237 * table 8.13 in the ES 3.1 Specification (``Correspondence of sized
4238 * internal formats to base internal formats ... and use cases ...'')
4239 * for the R32F, RG32F, RGB32F, and RGBA32F formats."
4240 */
4241 return _mesa_has_OES_texture_float_linear(ctx);
4242 case GL_BGRA:
4243 assert(_mesa_has_EXT_texture_format_BGRA8888(ctx));
4244 return true;
4245 case GL_BGRA8_EXT:
4246 assert(_mesa_has_EXT_texture_format_BGRA8888(ctx) &&
4247 _mesa_has_EXT_texture_storage(ctx));
4248 return true;
4249 default:
4250 return false;
4251 }
4252 }
4253