2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (c) 2008-2009 VMware, Inc.
6 * Copyright (c) 2012 Intel Corporation
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:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
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.
29 #include "glformats.h"
55 #define MAP1(x) MAP4(x, ZERO, ZERO, ZERO)
56 #define MAP2(x,y) MAP4(x, y, ZERO, ZERO)
57 #define MAP3(x,y,z) MAP4(x, y, z, ZERO)
58 #define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE }
74 MAP4(ZERO
, ZERO
, ZERO
, 0),
104 MAP4(0, ZERO
, ZERO
, ONE
),
110 MAP4(ZERO
, 0, ZERO
, ONE
),
116 MAP4(ZERO
, ZERO
, 0, ONE
),
140 MAP4(0, 1, ZERO
, ONE
),
146 * Convert a GL image format enum to an IDX_* value (see above).
149 get_map_idx(GLenum value
)
153 case GL_LUMINANCE_INTEGER_EXT
:
154 return IDX_LUMINANCE
;
156 case GL_ALPHA_INTEGER
:
159 return IDX_INTENSITY
;
160 case GL_LUMINANCE_ALPHA
:
161 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
162 return IDX_LUMINANCE_ALPHA
;
167 case GL_RGBA_INTEGER
:
180 case GL_BGRA_INTEGER
:
188 _mesa_problem(NULL
, "Unexpected inFormat %s",
189 _mesa_enum_to_string(value
));
195 * When promoting texture formats (see below) we need to compute the
196 * mapping of dest components back to source components.
197 * This function does that.
198 * \param inFormat the incoming format of the texture
199 * \param outFormat the final texture format
200 * \return map[6] a full 6-component map
203 _mesa_compute_component_mapping(GLenum inFormat
, GLenum outFormat
, GLubyte
*map
)
205 const int inFmt
= get_map_idx(inFormat
);
206 const int outFmt
= get_map_idx(outFormat
);
207 const GLubyte
*in2rgba
= mappings
[inFmt
].to_rgba
;
208 const GLubyte
*rgba2out
= mappings
[outFmt
].from_rgba
;
211 for (i
= 0; i
< 4; i
++)
212 map
[i
] = in2rgba
[rgba2out
[i
]];
218 printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n",
219 inFormat
, _mesa_enum_to_string(inFormat
),
220 outFormat
, _mesa_enum_to_string(outFormat
),
231 * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
234 _mesa_type_is_packed(GLenum type
)
237 case GL_UNSIGNED_BYTE_3_3_2
:
238 case GL_UNSIGNED_BYTE_2_3_3_REV
:
239 case MESA_UNSIGNED_BYTE_4_4
:
240 case GL_UNSIGNED_SHORT_5_6_5
:
241 case GL_UNSIGNED_SHORT_5_6_5_REV
:
242 case GL_UNSIGNED_SHORT_4_4_4_4
:
243 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
244 case GL_UNSIGNED_SHORT_5_5_5_1
:
245 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
246 case GL_UNSIGNED_INT_8_8_8_8
:
247 case GL_UNSIGNED_INT_8_8_8_8_REV
:
248 case GL_UNSIGNED_INT_10_10_10_2
:
249 case GL_UNSIGNED_INT_2_10_10_10_REV
:
250 case GL_UNSIGNED_SHORT_8_8_MESA
:
251 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
252 case GL_UNSIGNED_INT_24_8_EXT
:
253 case GL_UNSIGNED_INT_5_9_9_9_REV
:
254 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
255 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
264 * Get the size of a GL data type.
266 * \param type GL data type.
268 * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
269 * if an invalid type enum.
272 _mesa_sizeof_type(GLenum type
)
277 case GL_UNSIGNED_BYTE
:
278 return sizeof(GLubyte
);
280 return sizeof(GLbyte
);
281 case GL_UNSIGNED_SHORT
:
282 return sizeof(GLushort
);
284 return sizeof(GLshort
);
285 case GL_UNSIGNED_INT
:
286 return sizeof(GLuint
);
288 return sizeof(GLint
);
290 return sizeof(GLfloat
);
292 return sizeof(GLdouble
);
293 case GL_HALF_FLOAT_ARB
:
294 case GL_HALF_FLOAT_OES
:
295 return sizeof(GLhalfARB
);
297 return sizeof(GLfixed
);
305 * Same as _mesa_sizeof_type() but also accepting the packed pixel
309 _mesa_sizeof_packed_type(GLenum type
)
314 case GL_UNSIGNED_BYTE
:
315 return sizeof(GLubyte
);
317 return sizeof(GLbyte
);
318 case GL_UNSIGNED_SHORT
:
319 return sizeof(GLushort
);
321 return sizeof(GLshort
);
322 case GL_UNSIGNED_INT
:
323 return sizeof(GLuint
);
325 return sizeof(GLint
);
326 case GL_HALF_FLOAT_ARB
:
327 case GL_HALF_FLOAT_OES
:
328 return sizeof(GLhalfARB
);
330 return sizeof(GLfloat
);
331 case GL_UNSIGNED_BYTE_3_3_2
:
332 case GL_UNSIGNED_BYTE_2_3_3_REV
:
333 case MESA_UNSIGNED_BYTE_4_4
:
334 return sizeof(GLubyte
);
335 case GL_UNSIGNED_SHORT_5_6_5
:
336 case GL_UNSIGNED_SHORT_5_6_5_REV
:
337 case GL_UNSIGNED_SHORT_4_4_4_4
:
338 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
339 case GL_UNSIGNED_SHORT_5_5_5_1
:
340 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
341 case GL_UNSIGNED_SHORT_8_8_MESA
:
342 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
343 return sizeof(GLushort
);
344 case GL_UNSIGNED_INT_8_8_8_8
:
345 case GL_UNSIGNED_INT_8_8_8_8_REV
:
346 case GL_UNSIGNED_INT_10_10_10_2
:
347 case GL_UNSIGNED_INT_2_10_10_10_REV
:
348 case GL_UNSIGNED_INT_24_8_EXT
:
349 case GL_UNSIGNED_INT_5_9_9_9_REV
:
350 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
351 return sizeof(GLuint
);
352 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
361 * Get the number of components in a pixel format.
363 * \param format pixel format.
365 * \return the number of components in the given format, or -1 if a bad format.
368 _mesa_components_in_format(GLenum format
)
372 case GL_STENCIL_INDEX
:
373 case GL_DEPTH_COMPONENT
:
375 case GL_RED_INTEGER_EXT
:
377 case GL_GREEN_INTEGER_EXT
:
379 case GL_BLUE_INTEGER_EXT
:
381 case GL_ALPHA_INTEGER_EXT
:
383 case GL_LUMINANCE_INTEGER_EXT
:
387 case GL_LUMINANCE_ALPHA
:
388 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
391 case GL_DEPTH_STENCIL_EXT
:
397 case GL_RGB_INTEGER_EXT
:
398 case GL_BGR_INTEGER_EXT
:
404 case GL_RGBA_INTEGER_EXT
:
405 case GL_BGRA_INTEGER_EXT
:
415 * Get the bytes per pixel of pixel format type pair.
417 * \param format pixel format.
418 * \param type pixel type.
420 * \return bytes per pixel, or -1 if a bad format or type was given.
423 _mesa_bytes_per_pixel(GLenum format
, GLenum type
)
425 GLint comps
= _mesa_components_in_format(format
);
431 return 0; /* special case */
433 case GL_UNSIGNED_BYTE
:
434 return comps
* sizeof(GLubyte
);
436 case GL_UNSIGNED_SHORT
:
437 return comps
* sizeof(GLshort
);
439 case GL_UNSIGNED_INT
:
440 return comps
* sizeof(GLint
);
442 return comps
* sizeof(GLfloat
);
443 case GL_HALF_FLOAT_ARB
:
444 case GL_HALF_FLOAT_OES
:
445 return comps
* sizeof(GLhalfARB
);
446 case GL_UNSIGNED_BYTE_3_3_2
:
447 case GL_UNSIGNED_BYTE_2_3_3_REV
:
448 if (format
== GL_RGB
|| format
== GL_BGR
||
449 format
== GL_RGB_INTEGER_EXT
|| format
== GL_BGR_INTEGER_EXT
)
450 return sizeof(GLubyte
);
452 return -1; /* error */
453 case GL_UNSIGNED_SHORT_5_6_5
:
454 case GL_UNSIGNED_SHORT_5_6_5_REV
:
455 if (format
== GL_RGB
|| format
== GL_BGR
||
456 format
== GL_RGB_INTEGER_EXT
|| format
== GL_BGR_INTEGER_EXT
)
457 return sizeof(GLushort
);
459 return -1; /* error */
460 case GL_UNSIGNED_SHORT_4_4_4_4
:
461 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
462 if (format
== GL_RGBA
|| format
== GL_BGRA
|| format
== GL_ABGR_EXT
||
463 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
464 return sizeof(GLushort
);
467 case GL_UNSIGNED_SHORT_5_5_5_1
:
468 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
469 if (format
== GL_RGBA
|| format
== GL_BGRA
||
470 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
471 return sizeof(GLushort
);
474 case GL_UNSIGNED_INT_8_8_8_8
:
475 case GL_UNSIGNED_INT_8_8_8_8_REV
:
476 if (format
== GL_RGBA
|| format
== GL_BGRA
|| format
== GL_ABGR_EXT
||
477 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
||
479 return sizeof(GLuint
);
482 case GL_UNSIGNED_INT_10_10_10_2
:
483 case GL_UNSIGNED_INT_2_10_10_10_REV
:
484 if (format
== GL_RGBA
|| format
== GL_BGRA
||
485 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
||
487 return sizeof(GLuint
);
490 case GL_UNSIGNED_SHORT_8_8_MESA
:
491 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
492 if (format
== GL_YCBCR_MESA
)
493 return sizeof(GLushort
);
496 case GL_UNSIGNED_INT_24_8_EXT
:
497 if (format
== GL_DEPTH_STENCIL_EXT
)
498 return sizeof(GLuint
);
501 case GL_UNSIGNED_INT_5_9_9_9_REV
:
502 if (format
== GL_RGB
)
503 return sizeof(GLuint
);
506 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
507 if (format
== GL_RGB
)
508 return sizeof(GLuint
);
511 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
512 if (format
== GL_DEPTH_STENCIL
)
523 * Get the number of bytes for a vertex attrib with the given number of
524 * components and type.
526 * \param comps number of components.
527 * \param type data type.
529 * \return bytes per attribute, or -1 if a bad comps/type combination was given.
532 _mesa_bytes_per_vertex_attrib(GLint comps
, GLenum type
)
536 case GL_UNSIGNED_BYTE
:
537 return comps
* sizeof(GLubyte
);
539 case GL_UNSIGNED_SHORT
:
540 return comps
* sizeof(GLshort
);
542 case GL_UNSIGNED_INT
:
543 return comps
* sizeof(GLint
);
545 return comps
* sizeof(GLfloat
);
546 case GL_HALF_FLOAT_ARB
:
547 return comps
* sizeof(GLhalfARB
);
549 return comps
* sizeof(GLdouble
);
551 return comps
* sizeof(GLfixed
);
552 case GL_INT_2_10_10_10_REV
:
553 case GL_UNSIGNED_INT_2_10_10_10_REV
:
555 return sizeof(GLuint
);
558 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
560 return sizeof(GLuint
);
569 * Test if the given format is unsized.
572 _mesa_is_enum_format_unsized(GLenum format
)
587 case GL_LUMINANCE_ALPHA
:
592 case GL_SLUMINANCE_ALPHA
:
599 case GL_INTENSITY_SNORM
:
600 case GL_LUMINANCE_SNORM
:
601 case GL_LUMINANCE_ALPHA_SNORM
:
604 case GL_GREEN_INTEGER
:
605 case GL_BLUE_INTEGER
:
606 case GL_ALPHA_INTEGER
:
608 case GL_RGBA_INTEGER
:
610 case GL_BGRA_INTEGER
:
612 case GL_LUMINANCE_INTEGER_EXT
:
613 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
615 case GL_DEPTH_COMPONENT
:
616 case GL_DEPTH_STENCIL
:
617 case GL_STENCIL_INDEX
:
625 * Test if the given format is a UNORM (unsigned-normalized) format.
628 _mesa_is_enum_format_unorm(GLenum format
)
647 case GL_LUMINANCE_ALPHA
:
648 case GL_SLUMINANCE_ALPHA
:
649 case GL_LUMINANCE4_ALPHA4
:
650 case GL_LUMINANCE6_ALPHA2
:
651 case GL_LUMINANCE8_ALPHA8
:
652 case GL_LUMINANCE12_ALPHA4
:
653 case GL_LUMINANCE12_ALPHA12
:
654 case GL_LUMINANCE16_ALPHA16
:
696 * Test if the given format is a SNORM (signed-normalized) format.
699 _mesa_is_enum_format_snorm(GLenum format
)
702 /* signed, normalized texture formats */
714 case GL_RGBA16_SNORM
:
716 case GL_ALPHA8_SNORM
:
717 case GL_ALPHA16_SNORM
:
718 case GL_LUMINANCE_SNORM
:
719 case GL_LUMINANCE8_SNORM
:
720 case GL_LUMINANCE16_SNORM
:
721 case GL_LUMINANCE_ALPHA_SNORM
:
722 case GL_LUMINANCE8_ALPHA8_SNORM
:
723 case GL_LUMINANCE16_ALPHA16_SNORM
:
724 case GL_INTENSITY_SNORM
:
725 case GL_INTENSITY8_SNORM
:
726 case GL_INTENSITY16_SNORM
:
734 * Test if the given format is an integer (non-normalized) format.
737 _mesa_is_enum_format_unsigned_int(GLenum format
)
740 /* specific integer formats */
741 case GL_RGBA32UI_EXT
:
745 case GL_ALPHA32UI_EXT
:
746 case GL_INTENSITY32UI_EXT
:
747 case GL_LUMINANCE32UI_EXT
:
748 case GL_LUMINANCE_ALPHA32UI_EXT
:
749 case GL_RGBA16UI_EXT
:
753 case GL_ALPHA16UI_EXT
:
754 case GL_INTENSITY16UI_EXT
:
755 case GL_LUMINANCE16UI_EXT
:
756 case GL_LUMINANCE_ALPHA16UI_EXT
:
761 case GL_ALPHA8UI_EXT
:
762 case GL_INTENSITY8UI_EXT
:
763 case GL_LUMINANCE8UI_EXT
:
764 case GL_LUMINANCE_ALPHA8UI_EXT
:
774 * Test if the given format is an integer (non-normalized) format.
777 _mesa_is_enum_format_signed_int(GLenum format
)
780 /* generic integer formats */
781 case GL_RED_INTEGER_EXT
:
782 case GL_GREEN_INTEGER_EXT
:
783 case GL_BLUE_INTEGER_EXT
:
784 case GL_ALPHA_INTEGER_EXT
:
785 case GL_RGB_INTEGER_EXT
:
786 case GL_RGBA_INTEGER_EXT
:
787 case GL_BGR_INTEGER_EXT
:
788 case GL_BGRA_INTEGER_EXT
:
789 case GL_LUMINANCE_INTEGER_EXT
:
790 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
792 /* specific integer formats */
797 case GL_ALPHA32I_EXT
:
798 case GL_INTENSITY32I_EXT
:
799 case GL_LUMINANCE32I_EXT
:
800 case GL_LUMINANCE_ALPHA32I_EXT
:
805 case GL_ALPHA16I_EXT
:
806 case GL_INTENSITY16I_EXT
:
807 case GL_LUMINANCE16I_EXT
:
808 case GL_LUMINANCE_ALPHA16I_EXT
:
814 case GL_INTENSITY8I_EXT
:
815 case GL_LUMINANCE8I_EXT
:
816 case GL_LUMINANCE_ALPHA8I_EXT
:
824 * Test if the given format is an ASTC format.
827 _mesa_is_astc_format(GLenum internalFormat
)
829 switch (internalFormat
) {
830 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
831 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
832 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
833 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
834 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
835 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
836 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
837 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
838 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
839 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
840 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
841 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
842 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
843 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
844 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
845 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
846 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
847 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
848 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
849 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
850 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
851 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
852 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
853 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
854 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
855 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
856 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
857 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
866 * Test if the given format is an integer (non-normalized) format.
869 _mesa_is_enum_format_integer(GLenum format
)
871 return _mesa_is_enum_format_unsigned_int(format
) ||
872 _mesa_is_enum_format_signed_int(format
);
877 _mesa_is_type_unsigned(GLenum type
)
880 case GL_UNSIGNED_INT
:
881 case GL_UNSIGNED_INT_8_8_8_8
:
882 case GL_UNSIGNED_INT_8_8_8_8_REV
:
883 case GL_UNSIGNED_INT_10_10_10_2
:
884 case GL_UNSIGNED_INT_2_10_10_10_REV
:
886 case GL_UNSIGNED_SHORT
:
887 case GL_UNSIGNED_SHORT_4_4_4_4
:
888 case GL_UNSIGNED_SHORT_5_5_5_1
:
889 case GL_UNSIGNED_SHORT_5_6_5
:
890 case GL_UNSIGNED_SHORT_5_6_5_REV
:
891 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
892 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
893 case GL_UNSIGNED_SHORT_8_8_MESA
:
894 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
896 case GL_UNSIGNED_BYTE
:
897 case GL_UNSIGNED_BYTE_3_3_2
:
898 case GL_UNSIGNED_BYTE_2_3_3_REV
:
908 * Test if the given image format is a color/RGBA format (i.e., not color
909 * index, depth, stencil, etc).
910 * \param format the image format value (may by an internal texture format)
911 * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
914 _mesa_is_color_format(GLenum format
)
932 case GL_LUMINANCE_ALPHA
:
933 case GL_LUMINANCE4_ALPHA4
:
934 case GL_LUMINANCE6_ALPHA2
:
935 case GL_LUMINANCE8_ALPHA8
:
936 case GL_LUMINANCE12_ALPHA4
:
937 case GL_LUMINANCE12_ALPHA12
:
938 case GL_LUMINANCE16_ALPHA16
:
971 /* float texture formats */
972 case GL_ALPHA16F_ARB
:
973 case GL_ALPHA32F_ARB
:
974 case GL_LUMINANCE16F_ARB
:
975 case GL_LUMINANCE32F_ARB
:
976 case GL_LUMINANCE_ALPHA16F_ARB
:
977 case GL_LUMINANCE_ALPHA32F_ARB
:
978 case GL_INTENSITY16F_ARB
:
979 case GL_INTENSITY32F_ARB
:
988 /* compressed formats */
989 case GL_COMPRESSED_ALPHA
:
990 case GL_COMPRESSED_LUMINANCE
:
991 case GL_COMPRESSED_LUMINANCE_ALPHA
:
992 case GL_COMPRESSED_INTENSITY
:
993 case GL_COMPRESSED_RED
:
994 case GL_COMPRESSED_RG
:
995 case GL_COMPRESSED_RGB
:
996 case GL_COMPRESSED_RGBA
:
1001 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
1002 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
1003 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
1004 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
1005 case GL_COMPRESSED_RGB_FXT1_3DFX
:
1006 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
1009 case GL_SRGB_ALPHA_EXT
:
1010 case GL_SRGB8_ALPHA8_EXT
:
1011 case GL_SLUMINANCE_ALPHA_EXT
:
1012 case GL_SLUMINANCE8_ALPHA8_EXT
:
1013 case GL_SLUMINANCE_EXT
:
1014 case GL_SLUMINANCE8_EXT
:
1015 case GL_COMPRESSED_SRGB_EXT
:
1016 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1017 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
1018 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1019 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1020 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1021 case GL_COMPRESSED_SLUMINANCE_EXT
:
1022 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
1023 case GL_COMPRESSED_RED_RGTC1
:
1024 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
1025 case GL_COMPRESSED_RG_RGTC2
:
1026 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
1027 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
1028 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
1029 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
1030 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
1031 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1032 case GL_ETC1_RGB8_OES
:
1033 case GL_COMPRESSED_RGB8_ETC2
:
1034 case GL_COMPRESSED_SRGB8_ETC2
:
1035 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
1036 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1037 case GL_COMPRESSED_R11_EAC
:
1038 case GL_COMPRESSED_RG11_EAC
:
1039 case GL_COMPRESSED_SIGNED_R11_EAC
:
1040 case GL_COMPRESSED_SIGNED_RG11_EAC
:
1041 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1042 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1043 case GL_COMPRESSED_RGBA_BPTC_UNORM
:
1044 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1045 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT
:
1046 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT
:
1047 /* generic integer formats */
1048 case GL_RED_INTEGER_EXT
:
1049 case GL_GREEN_INTEGER_EXT
:
1050 case GL_BLUE_INTEGER_EXT
:
1051 case GL_ALPHA_INTEGER_EXT
:
1052 case GL_RGB_INTEGER_EXT
:
1053 case GL_RGBA_INTEGER_EXT
:
1054 case GL_BGR_INTEGER_EXT
:
1055 case GL_BGRA_INTEGER_EXT
:
1057 case GL_LUMINANCE_INTEGER_EXT
:
1058 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1059 /* sized integer formats */
1060 case GL_RGBA32UI_EXT
:
1061 case GL_RGB32UI_EXT
:
1064 case GL_ALPHA32UI_EXT
:
1065 case GL_INTENSITY32UI_EXT
:
1066 case GL_LUMINANCE32UI_EXT
:
1067 case GL_LUMINANCE_ALPHA32UI_EXT
:
1068 case GL_RGBA16UI_EXT
:
1069 case GL_RGB16UI_EXT
:
1072 case GL_ALPHA16UI_EXT
:
1073 case GL_INTENSITY16UI_EXT
:
1074 case GL_LUMINANCE16UI_EXT
:
1075 case GL_LUMINANCE_ALPHA16UI_EXT
:
1076 case GL_RGBA8UI_EXT
:
1080 case GL_ALPHA8UI_EXT
:
1081 case GL_INTENSITY8UI_EXT
:
1082 case GL_LUMINANCE8UI_EXT
:
1083 case GL_LUMINANCE_ALPHA8UI_EXT
:
1084 case GL_RGBA32I_EXT
:
1088 case GL_ALPHA32I_EXT
:
1089 case GL_INTENSITY32I_EXT
:
1090 case GL_LUMINANCE32I_EXT
:
1091 case GL_LUMINANCE_ALPHA32I_EXT
:
1092 case GL_RGBA16I_EXT
:
1096 case GL_ALPHA16I_EXT
:
1097 case GL_INTENSITY16I_EXT
:
1098 case GL_LUMINANCE16I_EXT
:
1099 case GL_LUMINANCE_ALPHA16I_EXT
:
1104 case GL_ALPHA8I_EXT
:
1105 case GL_INTENSITY8I_EXT
:
1106 case GL_LUMINANCE8I_EXT
:
1107 case GL_LUMINANCE_ALPHA8I_EXT
:
1108 /* signed, normalized texture formats */
1117 case GL_RGB16_SNORM
:
1119 case GL_RGBA8_SNORM
:
1120 case GL_RGBA16_SNORM
:
1121 case GL_ALPHA_SNORM
:
1122 case GL_ALPHA8_SNORM
:
1123 case GL_ALPHA16_SNORM
:
1124 case GL_LUMINANCE_SNORM
:
1125 case GL_LUMINANCE8_SNORM
:
1126 case GL_LUMINANCE16_SNORM
:
1127 case GL_LUMINANCE_ALPHA_SNORM
:
1128 case GL_LUMINANCE8_ALPHA8_SNORM
:
1129 case GL_LUMINANCE16_ALPHA16_SNORM
:
1130 case GL_INTENSITY_SNORM
:
1131 case GL_INTENSITY8_SNORM
:
1132 case GL_INTENSITY16_SNORM
:
1134 case GL_R11F_G11F_B10F
:
1137 case GL_YCBCR_MESA
: /* not considered to be RGB */
1146 * Test if the given image format is a depth component format.
1149 _mesa_is_depth_format(GLenum format
)
1152 case GL_DEPTH_COMPONENT
:
1153 case GL_DEPTH_COMPONENT16
:
1154 case GL_DEPTH_COMPONENT24
:
1155 case GL_DEPTH_COMPONENT32
:
1156 case GL_DEPTH_COMPONENT32F
:
1165 * Test if the given image format is a stencil format.
1168 _mesa_is_stencil_format(GLenum format
)
1171 case GL_STENCIL_INDEX
:
1180 * Test if the given image format is a YCbCr format.
1183 _mesa_is_ycbcr_format(GLenum format
)
1195 * Test if the given image format is a depth+stencil format.
1198 _mesa_is_depthstencil_format(GLenum format
)
1201 case GL_DEPTH24_STENCIL8_EXT
:
1202 case GL_DEPTH_STENCIL_EXT
:
1203 case GL_DEPTH32F_STENCIL8
:
1212 * Test if the given image format is a depth or stencil format.
1215 _mesa_is_depth_or_stencil_format(GLenum format
)
1218 case GL_DEPTH_COMPONENT
:
1219 case GL_DEPTH_COMPONENT16
:
1220 case GL_DEPTH_COMPONENT24
:
1221 case GL_DEPTH_COMPONENT32
:
1222 case GL_STENCIL_INDEX
:
1223 case GL_STENCIL_INDEX1_EXT
:
1224 case GL_STENCIL_INDEX4_EXT
:
1225 case GL_STENCIL_INDEX8_EXT
:
1226 case GL_STENCIL_INDEX16_EXT
:
1227 case GL_DEPTH_STENCIL_EXT
:
1228 case GL_DEPTH24_STENCIL8_EXT
:
1229 case GL_DEPTH_COMPONENT32F
:
1230 case GL_DEPTH32F_STENCIL8
:
1239 * Test if an image format is a supported compressed format.
1240 * \param format the internal format token provided by the user.
1241 * \return GL_TRUE if compressed, GL_FALSE if uncompressed
1244 _mesa_is_compressed_format(const struct gl_context
*ctx
, GLenum format
)
1247 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
1248 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
1249 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
1250 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
1251 /* Assume that the ANGLE flag will always be set if the EXT flag is set.
1253 return ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1258 return _mesa_is_desktop_gl(ctx
) &&
1259 ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1260 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1261 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1262 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1263 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1264 return _mesa_is_desktop_gl(ctx
)
1265 && ctx
->Extensions
.EXT_texture_sRGB
1266 && ctx
->Extensions
.EXT_texture_compression_s3tc
;
1267 case GL_COMPRESSED_RGB_FXT1_3DFX
:
1268 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
1269 return _mesa_is_desktop_gl(ctx
)
1270 && ctx
->Extensions
.TDFX_texture_compression_FXT1
;
1271 case GL_COMPRESSED_RED_RGTC1
:
1272 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
1273 case GL_COMPRESSED_RG_RGTC2
:
1274 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
1275 return _mesa_is_desktop_gl(ctx
)
1276 && ctx
->Extensions
.ARB_texture_compression_rgtc
;
1277 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
1278 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
1279 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
1280 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
1281 return ctx
->API
== API_OPENGL_COMPAT
1282 && ctx
->Extensions
.EXT_texture_compression_latc
;
1283 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1284 return ctx
->API
== API_OPENGL_COMPAT
1285 && ctx
->Extensions
.ATI_texture_compression_3dc
;
1286 case GL_ETC1_RGB8_OES
:
1287 return _mesa_is_gles(ctx
)
1288 && ctx
->Extensions
.OES_compressed_ETC1_RGB8_texture
;
1289 case GL_COMPRESSED_RGB8_ETC2
:
1290 case GL_COMPRESSED_SRGB8_ETC2
:
1291 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
1292 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1293 case GL_COMPRESSED_R11_EAC
:
1294 case GL_COMPRESSED_RG11_EAC
:
1295 case GL_COMPRESSED_SIGNED_R11_EAC
:
1296 case GL_COMPRESSED_SIGNED_RG11_EAC
:
1297 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1298 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1299 return _mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
;
1300 case GL_COMPRESSED_RGBA_BPTC_UNORM
:
1301 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1302 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT
:
1303 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT
:
1304 return _mesa_is_desktop_gl(ctx
) &&
1305 ctx
->Extensions
.ARB_texture_compression_bptc
;
1306 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
1307 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
1308 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
1309 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
1310 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
1311 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
1312 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
1313 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
1314 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
1315 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
1316 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
1317 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
1318 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
1319 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
1320 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
1321 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
1322 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
1323 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
1324 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
1325 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
1326 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
1327 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
1328 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
1329 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
1330 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
1331 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
1332 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
1333 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
1334 return ctx
->Extensions
.KHR_texture_compression_astc_ldr
;
1335 case GL_PALETTE4_RGB8_OES
:
1336 case GL_PALETTE4_RGBA8_OES
:
1337 case GL_PALETTE4_R5_G6_B5_OES
:
1338 case GL_PALETTE4_RGBA4_OES
:
1339 case GL_PALETTE4_RGB5_A1_OES
:
1340 case GL_PALETTE8_RGB8_OES
:
1341 case GL_PALETTE8_RGBA8_OES
:
1342 case GL_PALETTE8_R5_G6_B5_OES
:
1343 case GL_PALETTE8_RGBA4_OES
:
1344 case GL_PALETTE8_RGB5_A1_OES
:
1345 return ctx
->API
== API_OPENGLES
;
1352 * Convert various unpack formats to the corresponding base format.
1355 _mesa_unpack_format_to_base_format(GLenum format
)
1358 case GL_RED_INTEGER
:
1360 case GL_GREEN_INTEGER
:
1362 case GL_BLUE_INTEGER
:
1364 case GL_ALPHA_INTEGER
:
1368 case GL_RGB_INTEGER
:
1370 case GL_RGBA_INTEGER
:
1372 case GL_BGR_INTEGER
:
1374 case GL_BGRA_INTEGER
:
1376 case GL_LUMINANCE_INTEGER_EXT
:
1377 return GL_LUMINANCE
;
1378 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1379 return GL_LUMINANCE_ALPHA
;
1390 case GL_LUMINANCE_ALPHA
:
1397 * Convert various base formats to the corresponding integer format.
1400 _mesa_base_format_to_integer_format(GLenum format
)
1404 return GL_RED_INTEGER
;
1406 return GL_GREEN_INTEGER
;
1408 return GL_BLUE_INTEGER
;
1410 return GL_RG_INTEGER
;
1412 return GL_RGB_INTEGER
;
1414 return GL_RGBA_INTEGER
;
1416 return GL_BGR_INTEGER
;
1418 return GL_BGRA_INTEGER
;
1420 return GL_ALPHA_INTEGER
;
1422 return GL_LUMINANCE_INTEGER_EXT
;
1423 case GL_LUMINANCE_ALPHA
:
1424 return GL_LUMINANCE_ALPHA_INTEGER_EXT
;
1432 * Does the given base texture/renderbuffer format have the channel
1436 _mesa_base_format_has_channel(GLenum base_format
, GLenum pname
)
1439 case GL_TEXTURE_RED_SIZE
:
1440 case GL_TEXTURE_RED_TYPE
:
1441 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1442 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1443 if (base_format
== GL_RED
||
1444 base_format
== GL_RG
||
1445 base_format
== GL_RGB
||
1446 base_format
== GL_RGBA
) {
1450 case GL_TEXTURE_GREEN_SIZE
:
1451 case GL_TEXTURE_GREEN_TYPE
:
1452 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1453 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1454 if (base_format
== GL_RG
||
1455 base_format
== GL_RGB
||
1456 base_format
== GL_RGBA
) {
1460 case GL_TEXTURE_BLUE_SIZE
:
1461 case GL_TEXTURE_BLUE_TYPE
:
1462 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1463 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1464 if (base_format
== GL_RGB
||
1465 base_format
== GL_RGBA
) {
1469 case GL_TEXTURE_ALPHA_SIZE
:
1470 case GL_TEXTURE_ALPHA_TYPE
:
1471 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1472 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1473 if (base_format
== GL_RGBA
||
1474 base_format
== GL_ALPHA
||
1475 base_format
== GL_LUMINANCE_ALPHA
) {
1479 case GL_TEXTURE_LUMINANCE_SIZE
:
1480 case GL_TEXTURE_LUMINANCE_TYPE
:
1481 if (base_format
== GL_LUMINANCE
||
1482 base_format
== GL_LUMINANCE_ALPHA
) {
1486 case GL_TEXTURE_INTENSITY_SIZE
:
1487 case GL_TEXTURE_INTENSITY_TYPE
:
1488 if (base_format
== GL_INTENSITY
) {
1492 case GL_TEXTURE_DEPTH_SIZE
:
1493 case GL_TEXTURE_DEPTH_TYPE
:
1494 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1495 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1496 if (base_format
== GL_DEPTH_STENCIL
||
1497 base_format
== GL_DEPTH_COMPONENT
) {
1501 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1502 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1503 if (base_format
== GL_DEPTH_STENCIL
||
1504 base_format
== GL_STENCIL_INDEX
) {
1509 _mesa_warning(NULL
, "%s: Unexpected channel token 0x%x\n",
1519 * Returns the number of channels/components for a base format.
1522 _mesa_base_format_component_count(GLenum base_format
)
1524 switch (base_format
) {
1528 case GL_DEPTH_COMPONENT
:
1531 case GL_LUMINANCE_ALPHA
:
1532 case GL_DEPTH_STENCIL
:
1545 * If format is a generic compressed format, return the corresponding
1546 * non-compressed format. For other formats, return the format as-is.
1549 _mesa_generic_compressed_format_to_uncompressed_format(GLenum format
)
1552 case GL_COMPRESSED_RED
:
1554 case GL_COMPRESSED_RG
:
1556 case GL_COMPRESSED_RGB
:
1558 case GL_COMPRESSED_RGBA
:
1560 case GL_COMPRESSED_ALPHA
:
1562 case GL_COMPRESSED_LUMINANCE
:
1563 return GL_LUMINANCE
;
1564 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1565 return GL_LUMINANCE_ALPHA
;
1566 case GL_COMPRESSED_INTENSITY
:
1567 return GL_INTENSITY
;
1569 case GL_COMPRESSED_SRGB
:
1571 case GL_COMPRESSED_SRGB_ALPHA
:
1572 return GL_SRGB_ALPHA
;
1573 case GL_COMPRESSED_SLUMINANCE
:
1574 return GL_SLUMINANCE
;
1575 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
1576 return GL_SLUMINANCE_ALPHA
;
1584 * Return the equivalent non-generic internal format.
1585 * This is useful for comparing whether two internal formats are equivalent.
1588 _mesa_get_nongeneric_internalformat(GLenum format
)
1591 /* GL 1.1 formats. */
1599 case GL_LUMINANCE_ALPHA
:
1600 return GL_LUMINANCE8_ALPHA8
;
1603 return GL_LUMINANCE8
;
1607 return GL_INTENSITY8
;
1609 /* GL_ARB_texture_rg */
1615 /* GL_EXT_texture_sRGB */
1619 return GL_SRGB8_ALPHA8
;
1621 return GL_SLUMINANCE8
;
1622 case GL_SLUMINANCE_ALPHA
:
1623 return GL_SLUMINANCE8_ALPHA8
;
1625 /* GL_EXT_texture_snorm */
1627 return GL_RGBA8_SNORM
;
1629 return GL_RGB8_SNORM
;
1631 return GL_RG8_SNORM
;
1634 case GL_LUMINANCE_ALPHA_SNORM
:
1635 return GL_LUMINANCE8_ALPHA8_SNORM
;
1636 case GL_LUMINANCE_SNORM
:
1637 return GL_LUMINANCE8_SNORM
;
1638 case GL_ALPHA_SNORM
:
1639 return GL_ALPHA8_SNORM
;
1640 case GL_INTENSITY_SNORM
:
1641 return GL_INTENSITY8_SNORM
;
1650 * Convert an sRGB internal format to linear.
1653 _mesa_get_linear_internalformat(GLenum format
)
1662 case GL_SRGB8_ALPHA8
:
1664 case GL_SLUMINANCE8
:
1665 return GL_LUMINANCE8
;
1667 return GL_LUMINANCE
;
1668 case GL_SLUMINANCE_ALPHA
:
1669 return GL_LUMINANCE_ALPHA
;
1670 case GL_SLUMINANCE8_ALPHA8
:
1671 return GL_LUMINANCE8_ALPHA8
;
1679 * Do error checking of format/type combinations for glReadPixels,
1680 * glDrawPixels and glTex[Sub]Image. Note that depending on the format
1681 * and type values, we may either generate GL_INVALID_OPERATION or
1684 * \param format pixel format.
1685 * \param type pixel type.
1687 * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
1690 _mesa_error_check_format_and_type(const struct gl_context
*ctx
,
1691 GLenum format
, GLenum type
)
1693 /* From OpenGL 3.3 spec, page 220:
1694 * "If the format is DEPTH_STENCIL, then values are taken from
1695 * both the depth buffer and the stencil buffer. If there is no
1696 * depth buffer or if there is no stencil buffer, then the error
1697 * INVALID_OPERATION occurs. If the type parameter is not
1698 * UNSIGNED_INT_24_8 or FLOAT_32_UNSIGNED_INT_24_8_REV, then the
1699 * error INVALID_ENUM occurs."
1701 * OpenGL ES still generates GL_INVALID_OPERATION because glReadPixels
1702 * cannot be used to read depth or stencil in that API.
1704 if (_mesa_is_desktop_gl(ctx
) && format
== GL_DEPTH_STENCIL
1705 && type
!= GL_UNSIGNED_INT_24_8
1706 && type
!= GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
1707 return GL_INVALID_ENUM
;
1709 /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
1712 if (format
!= GL_COLOR_INDEX
&& format
!= GL_STENCIL_INDEX
) {
1713 return GL_INVALID_ENUM
;
1717 case GL_UNSIGNED_BYTE_3_3_2
:
1718 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1719 case GL_UNSIGNED_SHORT_5_6_5
:
1720 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1721 if (format
== GL_RGB
) {
1724 if (format
== GL_RGB_INTEGER_EXT
&&
1725 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1728 return GL_INVALID_OPERATION
;
1730 case GL_UNSIGNED_SHORT_4_4_4_4
:
1731 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1732 case GL_UNSIGNED_INT_8_8_8_8
:
1733 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1734 if (format
== GL_RGBA
||
1735 format
== GL_BGRA
||
1736 format
== GL_ABGR_EXT
) {
1739 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1740 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1743 return GL_INVALID_OPERATION
;
1745 case GL_UNSIGNED_SHORT_5_5_5_1
:
1746 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1747 case GL_UNSIGNED_INT_10_10_10_2
:
1748 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1749 if (format
== GL_RGBA
||
1750 format
== GL_BGRA
) {
1753 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1754 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1757 if (type
== GL_UNSIGNED_INT_2_10_10_10_REV
&& format
== GL_RGB
&&
1758 ctx
->API
== API_OPENGLES2
) {
1759 break; /* OK by GL_EXT_texture_type_2_10_10_10_REV */
1761 return GL_INVALID_OPERATION
;
1763 case GL_UNSIGNED_INT_24_8
:
1764 if (format
!= GL_DEPTH_STENCIL
) {
1765 return GL_INVALID_OPERATION
;
1769 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
1770 if (!ctx
->Extensions
.ARB_depth_buffer_float
) {
1771 return GL_INVALID_ENUM
;
1773 if (format
!= GL_DEPTH_STENCIL
) {
1774 return GL_INVALID_OPERATION
;
1778 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1779 if (!ctx
->Extensions
.EXT_packed_float
) {
1780 return GL_INVALID_ENUM
;
1782 if (format
!= GL_RGB
) {
1783 return GL_INVALID_OPERATION
;
1787 case GL_HALF_FLOAT_OES
:
1791 case GL_LUMINANCE_ALPHA
:
1797 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_texture_rg
)
1800 return GL_INVALID_OPERATION
;
1804 ; /* fall-through */
1807 /* now, for each format, check the type for compatibility */
1809 case GL_COLOR_INDEX
:
1810 case GL_STENCIL_INDEX
:
1814 case GL_UNSIGNED_BYTE
:
1816 case GL_UNSIGNED_SHORT
:
1818 case GL_UNSIGNED_INT
:
1823 return GL_INVALID_ENUM
;
1830 #if 0 /* not legal! see table 3.6 of the 1.5 spec */
1834 case GL_LUMINANCE_ALPHA
:
1835 case GL_DEPTH_COMPONENT
:
1838 case GL_UNSIGNED_BYTE
:
1840 case GL_UNSIGNED_SHORT
:
1842 case GL_UNSIGNED_INT
:
1847 return GL_INVALID_ENUM
;
1851 if (!ctx
->Extensions
.ARB_texture_rg
)
1852 return GL_INVALID_ENUM
;
1855 case GL_UNSIGNED_BYTE
:
1857 case GL_UNSIGNED_SHORT
:
1859 case GL_UNSIGNED_INT
:
1864 return GL_INVALID_ENUM
;
1870 case GL_UNSIGNED_BYTE
:
1872 case GL_UNSIGNED_SHORT
:
1874 case GL_UNSIGNED_INT
:
1876 case GL_UNSIGNED_BYTE_3_3_2
:
1877 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1878 case GL_UNSIGNED_SHORT_5_6_5
:
1879 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1882 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1883 /* OK by GL_EXT_texture_type_2_10_10_10_REV */
1884 return (ctx
->API
== API_OPENGLES2
)
1885 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1886 case GL_UNSIGNED_INT_5_9_9_9_REV
:
1887 return ctx
->Extensions
.EXT_texture_shared_exponent
1888 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1889 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1890 return ctx
->Extensions
.EXT_packed_float
1891 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1893 return GL_INVALID_ENUM
;
1898 /* NOTE: no packed types are supported with BGR. That's
1899 * intentional, according to the GL spec.
1902 case GL_UNSIGNED_BYTE
:
1904 case GL_UNSIGNED_SHORT
:
1906 case GL_UNSIGNED_INT
:
1911 return GL_INVALID_ENUM
;
1918 case GL_UNSIGNED_BYTE
:
1920 case GL_UNSIGNED_SHORT
:
1922 case GL_UNSIGNED_INT
:
1924 case GL_UNSIGNED_SHORT_4_4_4_4
:
1925 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1926 case GL_UNSIGNED_SHORT_5_5_5_1
:
1927 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1928 case GL_UNSIGNED_INT_8_8_8_8
:
1929 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1930 case GL_UNSIGNED_INT_10_10_10_2
:
1931 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1935 return GL_INVALID_ENUM
;
1941 case GL_UNSIGNED_BYTE
:
1943 case GL_UNSIGNED_SHORT
:
1945 case GL_UNSIGNED_INT
:
1947 case GL_UNSIGNED_SHORT_4_4_4_4
:
1948 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1949 case GL_UNSIGNED_INT_8_8_8_8
:
1950 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1954 return GL_INVALID_ENUM
;
1958 if (!ctx
->Extensions
.MESA_ycbcr_texture
)
1959 return GL_INVALID_ENUM
;
1960 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
||
1961 type
== GL_UNSIGNED_SHORT_8_8_REV_MESA
)
1964 return GL_INVALID_OPERATION
;
1966 case GL_DEPTH_STENCIL
:
1967 if (type
== GL_UNSIGNED_INT_24_8
)
1969 else if (ctx
->Extensions
.ARB_depth_buffer_float
&&
1970 type
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
1973 return GL_INVALID_ENUM
;
1975 /* integer-valued formats */
1976 case GL_RED_INTEGER_EXT
:
1977 case GL_GREEN_INTEGER_EXT
:
1978 case GL_BLUE_INTEGER_EXT
:
1979 case GL_ALPHA_INTEGER_EXT
:
1983 case GL_UNSIGNED_BYTE
:
1985 case GL_UNSIGNED_SHORT
:
1987 case GL_UNSIGNED_INT
:
1988 return (ctx
->Version
>= 30 ||
1989 ctx
->Extensions
.EXT_texture_integer
)
1990 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1992 return GL_INVALID_ENUM
;
1995 case GL_RGB_INTEGER_EXT
:
1998 case GL_UNSIGNED_BYTE
:
2000 case GL_UNSIGNED_SHORT
:
2002 case GL_UNSIGNED_INT
:
2003 return (ctx
->Version
>= 30 ||
2004 ctx
->Extensions
.EXT_texture_integer
)
2005 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2006 case GL_UNSIGNED_BYTE_3_3_2
:
2007 case GL_UNSIGNED_BYTE_2_3_3_REV
:
2008 case GL_UNSIGNED_SHORT_5_6_5
:
2009 case GL_UNSIGNED_SHORT_5_6_5_REV
:
2010 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2011 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2013 return GL_INVALID_ENUM
;
2016 case GL_BGR_INTEGER_EXT
:
2019 case GL_UNSIGNED_BYTE
:
2021 case GL_UNSIGNED_SHORT
:
2023 case GL_UNSIGNED_INT
:
2024 /* NOTE: no packed formats w/ BGR format */
2025 return (ctx
->Version
>= 30 ||
2026 ctx
->Extensions
.EXT_texture_integer
)
2027 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2029 return GL_INVALID_ENUM
;
2032 case GL_RGBA_INTEGER_EXT
:
2033 case GL_BGRA_INTEGER_EXT
:
2036 case GL_UNSIGNED_BYTE
:
2038 case GL_UNSIGNED_SHORT
:
2040 case GL_UNSIGNED_INT
:
2041 return (ctx
->Version
>= 30 ||
2042 ctx
->Extensions
.EXT_texture_integer
)
2043 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2044 case GL_UNSIGNED_SHORT_4_4_4_4
:
2045 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2046 case GL_UNSIGNED_SHORT_5_5_5_1
:
2047 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2048 case GL_UNSIGNED_INT_8_8_8_8
:
2049 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2050 case GL_UNSIGNED_INT_10_10_10_2
:
2051 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2052 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2053 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2055 return GL_INVALID_ENUM
;
2058 case GL_LUMINANCE_INTEGER_EXT
:
2059 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
2062 case GL_UNSIGNED_BYTE
:
2064 case GL_UNSIGNED_SHORT
:
2066 case GL_UNSIGNED_INT
:
2067 return ctx
->Extensions
.EXT_texture_integer
2068 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2070 return GL_INVALID_ENUM
;
2074 return GL_INVALID_ENUM
;
2081 * Do error checking of format/type combinations for OpenGL ES glReadPixels
2082 * and glTex[Sub]Image.
2083 * \return error code, or GL_NO_ERROR.
2086 _mesa_es_error_check_format_and_type(GLenum format
, GLenum type
,
2087 unsigned dimensions
)
2089 GLboolean type_valid
= GL_TRUE
;
2094 case GL_LUMINANCE_ALPHA
:
2095 type_valid
= (type
== GL_UNSIGNED_BYTE
2097 || type
== GL_HALF_FLOAT_OES
);
2101 type_valid
= (type
== GL_UNSIGNED_BYTE
2102 || type
== GL_UNSIGNED_SHORT_5_6_5
2104 || type
== GL_HALF_FLOAT_OES
);
2108 type_valid
= (type
== GL_UNSIGNED_BYTE
2109 || type
== GL_UNSIGNED_SHORT_4_4_4_4
2110 || type
== GL_UNSIGNED_SHORT_5_5_5_1
2112 || type
== GL_HALF_FLOAT_OES
2113 || type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
2116 case GL_DEPTH_COMPONENT
:
2117 /* This format is filtered against invalid dimensionalities elsewhere.
2119 type_valid
= (type
== GL_UNSIGNED_SHORT
2120 || type
== GL_UNSIGNED_INT
);
2123 case GL_DEPTH_STENCIL
:
2124 /* This format is filtered against invalid dimensionalities elsewhere.
2126 type_valid
= (type
== GL_UNSIGNED_INT_24_8
);
2130 type_valid
= (type
== GL_UNSIGNED_BYTE
);
2132 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
2133 * the format does not appear to be allowed for 3D textures in OpenGL
2136 if (dimensions
!= 2)
2137 return GL_INVALID_VALUE
;
2142 return GL_INVALID_VALUE
;
2145 return type_valid
? GL_NO_ERROR
: GL_INVALID_OPERATION
;
2150 * Do error checking of format/type combinations for OpenGL ES 3
2152 * \return error code, or GL_NO_ERROR.
2155 _mesa_es3_error_check_format_and_type(const struct gl_context
*ctx
,
2156 GLenum format
, GLenum type
,
2157 GLenum internalFormat
)
2162 case GL_UNSIGNED_BYTE
:
2163 switch (internalFormat
) {
2168 case GL_SRGB8_ALPHA8_EXT
:
2171 return GL_INVALID_OPERATION
;
2176 if (internalFormat
!= GL_RGBA8_SNORM
)
2177 return GL_INVALID_OPERATION
;
2180 case GL_UNSIGNED_SHORT_4_4_4_4
:
2181 switch (internalFormat
) {
2186 return GL_INVALID_OPERATION
;
2190 case GL_UNSIGNED_SHORT_5_5_5_1
:
2191 switch (internalFormat
) {
2196 return GL_INVALID_OPERATION
;
2200 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2201 switch (internalFormat
) {
2202 case GL_RGBA
: /* GL_EXT_texture_type_2_10_10_10_REV */
2207 return GL_INVALID_OPERATION
;
2212 if (internalFormat
!= GL_RGBA16F
)
2213 return GL_INVALID_OPERATION
;
2217 switch (internalFormat
) {
2222 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
2225 return GL_INVALID_OPERATION
;
2229 case GL_HALF_FLOAT_OES
:
2230 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
2233 return GL_INVALID_OPERATION
;
2237 case GL_RGBA_INTEGER
:
2239 case GL_UNSIGNED_BYTE
:
2240 if (internalFormat
!= GL_RGBA8UI
)
2241 return GL_INVALID_OPERATION
;
2245 if (internalFormat
!= GL_RGBA8I
)
2246 return GL_INVALID_OPERATION
;
2249 case GL_UNSIGNED_SHORT
:
2250 if (internalFormat
!= GL_RGBA16UI
)
2251 return GL_INVALID_OPERATION
;
2255 if (internalFormat
!= GL_RGBA16I
)
2256 return GL_INVALID_OPERATION
;
2259 case GL_UNSIGNED_INT
:
2260 if (internalFormat
!= GL_RGBA32UI
)
2261 return GL_INVALID_OPERATION
;
2265 if (internalFormat
!= GL_RGBA32I
)
2266 return GL_INVALID_OPERATION
;
2269 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2270 if (internalFormat
!= GL_RGB10_A2UI
)
2271 return GL_INVALID_OPERATION
;
2275 return GL_INVALID_OPERATION
;
2281 case GL_UNSIGNED_BYTE
:
2282 switch (internalFormat
) {
2289 return GL_INVALID_OPERATION
;
2294 if (internalFormat
!= GL_RGB8_SNORM
)
2295 return GL_INVALID_OPERATION
;
2298 case GL_UNSIGNED_SHORT_5_6_5
:
2299 switch (internalFormat
) {
2304 return GL_INVALID_OPERATION
;
2308 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2309 if (internalFormat
!= GL_R11F_G11F_B10F
)
2310 return GL_INVALID_OPERATION
;
2313 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2314 if (internalFormat
!= GL_RGB9_E5
)
2315 return GL_INVALID_OPERATION
;
2319 switch (internalFormat
) {
2321 case GL_R11F_G11F_B10F
:
2325 return GL_INVALID_OPERATION
;
2330 switch (internalFormat
) {
2333 case GL_R11F_G11F_B10F
:
2337 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
2340 return GL_INVALID_OPERATION
;
2344 case GL_HALF_FLOAT_OES
:
2345 if (!ctx
->Extensions
.OES_texture_half_float
|| internalFormat
!= format
)
2346 return GL_INVALID_OPERATION
;
2349 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2350 switch (internalFormat
) {
2351 case GL_RGB
: /* GL_EXT_texture_type_2_10_10_10_REV */
2354 return GL_INVALID_OPERATION
;
2359 return GL_INVALID_OPERATION
;
2363 case GL_RGB_INTEGER
:
2365 case GL_UNSIGNED_BYTE
:
2366 if (internalFormat
!= GL_RGB8UI
)
2367 return GL_INVALID_OPERATION
;
2371 if (internalFormat
!= GL_RGB8I
)
2372 return GL_INVALID_OPERATION
;
2375 case GL_UNSIGNED_SHORT
:
2376 if (internalFormat
!= GL_RGB16UI
)
2377 return GL_INVALID_OPERATION
;
2381 if (internalFormat
!= GL_RGB16I
)
2382 return GL_INVALID_OPERATION
;
2385 case GL_UNSIGNED_INT
:
2386 if (internalFormat
!= GL_RGB32UI
)
2387 return GL_INVALID_OPERATION
;
2391 if (internalFormat
!= GL_RGB32I
)
2392 return GL_INVALID_OPERATION
;
2396 return GL_INVALID_OPERATION
;
2402 case GL_UNSIGNED_BYTE
:
2403 if (internalFormat
!= GL_RG8
)
2404 return GL_INVALID_OPERATION
;
2408 if (internalFormat
!= GL_RG8_SNORM
)
2409 return GL_INVALID_OPERATION
;
2413 case GL_HALF_FLOAT_OES
:
2414 switch (internalFormat
) {
2418 if (ctx
->Extensions
.ARB_texture_rg
&&
2419 ctx
->Extensions
.OES_texture_half_float
)
2423 return GL_INVALID_OPERATION
;
2428 switch (internalFormat
) {
2433 if (ctx
->Extensions
.ARB_texture_rg
&&
2434 ctx
->Extensions
.OES_texture_float
)
2438 return GL_INVALID_OPERATION
;
2443 return GL_INVALID_OPERATION
;
2449 case GL_UNSIGNED_BYTE
:
2450 if (internalFormat
!= GL_RG8UI
)
2451 return GL_INVALID_OPERATION
;
2455 if (internalFormat
!= GL_RG8I
)
2456 return GL_INVALID_OPERATION
;
2459 case GL_UNSIGNED_SHORT
:
2460 if (internalFormat
!= GL_RG16UI
)
2461 return GL_INVALID_OPERATION
;
2465 if (internalFormat
!= GL_RG16I
)
2466 return GL_INVALID_OPERATION
;
2469 case GL_UNSIGNED_INT
:
2470 if (internalFormat
!= GL_RG32UI
)
2471 return GL_INVALID_OPERATION
;
2475 if (internalFormat
!= GL_RG32I
)
2476 return GL_INVALID_OPERATION
;
2480 return GL_INVALID_OPERATION
;
2486 case GL_UNSIGNED_BYTE
:
2487 if (internalFormat
!= GL_R8
)
2488 return GL_INVALID_OPERATION
;
2492 if (internalFormat
!= GL_R8_SNORM
)
2493 return GL_INVALID_OPERATION
;
2497 case GL_HALF_FLOAT_OES
:
2498 switch (internalFormat
) {
2503 if (ctx
->Extensions
.ARB_texture_rg
&&
2504 ctx
->Extensions
.OES_texture_half_float
)
2508 return GL_INVALID_OPERATION
;
2513 switch (internalFormat
) {
2518 if (ctx
->Extensions
.ARB_texture_rg
&&
2519 ctx
->Extensions
.OES_texture_float
)
2523 return GL_INVALID_OPERATION
;
2528 return GL_INVALID_OPERATION
;
2532 case GL_RED_INTEGER
:
2534 case GL_UNSIGNED_BYTE
:
2535 if (internalFormat
!= GL_R8UI
)
2536 return GL_INVALID_OPERATION
;
2540 if (internalFormat
!= GL_R8I
)
2541 return GL_INVALID_OPERATION
;
2544 case GL_UNSIGNED_SHORT
:
2545 if (internalFormat
!= GL_R16UI
)
2546 return GL_INVALID_OPERATION
;
2550 if (internalFormat
!= GL_R16I
)
2551 return GL_INVALID_OPERATION
;
2554 case GL_UNSIGNED_INT
:
2555 if (internalFormat
!= GL_R32UI
)
2556 return GL_INVALID_OPERATION
;
2560 if (internalFormat
!= GL_R32I
)
2561 return GL_INVALID_OPERATION
;
2565 return GL_INVALID_OPERATION
;
2569 case GL_DEPTH_COMPONENT
:
2571 case GL_UNSIGNED_SHORT
:
2572 if (internalFormat
!= GL_DEPTH_COMPONENT
2573 && internalFormat
!= GL_DEPTH_COMPONENT16
)
2574 return GL_INVALID_OPERATION
;
2577 case GL_UNSIGNED_INT
:
2578 switch (internalFormat
) {
2579 case GL_DEPTH_COMPONENT
:
2580 case GL_DEPTH_COMPONENT16
:
2581 case GL_DEPTH_COMPONENT24
:
2584 return GL_INVALID_OPERATION
;
2589 if (internalFormat
!= GL_DEPTH_COMPONENT32F
)
2590 return GL_INVALID_OPERATION
;
2594 return GL_INVALID_OPERATION
;
2598 case GL_DEPTH_STENCIL
:
2600 case GL_UNSIGNED_INT_24_8
:
2601 if (internalFormat
!= GL_DEPTH_STENCIL
2602 && internalFormat
!= GL_DEPTH24_STENCIL8
)
2603 return GL_INVALID_OPERATION
;
2606 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
2607 if (internalFormat
!= GL_DEPTH32F_STENCIL8
)
2608 return GL_INVALID_OPERATION
;
2612 return GL_INVALID_OPERATION
;
2618 case GL_LUMINANCE_ALPHA
:
2621 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
2623 case GL_HALF_FLOAT_OES
:
2624 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
2627 if (type
!= GL_UNSIGNED_BYTE
|| format
!= internalFormat
)
2628 return GL_INVALID_OPERATION
;
2636 set_swizzle(uint8_t *swizzle
, int x
, int y
, int z
, int w
)
2638 swizzle
[MESA_FORMAT_SWIZZLE_X
] = x
;
2639 swizzle
[MESA_FORMAT_SWIZZLE_Y
] = y
;
2640 swizzle
[MESA_FORMAT_SWIZZLE_Z
] = z
;
2641 swizzle
[MESA_FORMAT_SWIZZLE_W
] = w
;
2645 get_swizzle_from_gl_format(GLenum format
, uint8_t *swizzle
)
2649 case GL_RGBA_INTEGER_EXT
:
2650 set_swizzle(swizzle
, 0, 1, 2, 3);
2653 case GL_BGRA_INTEGER_EXT
:
2654 set_swizzle(swizzle
, 2, 1, 0, 3);
2657 set_swizzle(swizzle
, 3, 2, 1, 0);
2660 case GL_RGB_INTEGER_EXT
:
2661 set_swizzle(swizzle
, 0, 1, 2, 5);
2664 case GL_BGR_INTEGER_EXT
:
2665 set_swizzle(swizzle
, 2, 1, 0, 5);
2667 case GL_LUMINANCE_ALPHA
:
2668 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
2669 set_swizzle(swizzle
, 0, 0, 0, 1);
2673 set_swizzle(swizzle
, 0, 1, 4, 5);
2676 case GL_RED_INTEGER_EXT
:
2677 set_swizzle(swizzle
, 0, 4, 4, 5);
2680 case GL_GREEN_INTEGER_EXT
:
2681 set_swizzle(swizzle
, 4, 0, 4, 5);
2684 case GL_BLUE_INTEGER_EXT
:
2685 set_swizzle(swizzle
, 4, 4, 0, 5);
2688 case GL_ALPHA_INTEGER_EXT
:
2689 set_swizzle(swizzle
, 4, 4, 4, 0);
2692 case GL_LUMINANCE_INTEGER_EXT
:
2693 set_swizzle(swizzle
, 0, 0, 0, 5);
2696 set_swizzle(swizzle
, 0, 0, 0, 0);
2704 * Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
2705 * GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
2706 * otherwise (for non-array formats).
2708 * This function will typically be used to compute a mesa format from a GL type
2709 * so we can then call _mesa_format_convert. This function does
2710 * not consider byte swapping, so it returns types assuming that no byte
2711 * swapping is involved. If byte swapping is involved then clients are supposed
2712 * to handle that on their side before calling _mesa_format_convert.
2714 * This function returns an uint32_t that can pack a mesa_format or a
2715 * mesa_array_format. Clients must check the mesa array format bit
2716 * (MESA_ARRAY_FORMAT_BIT) on the return value to know if the returned
2717 * format is a mesa_array_format or a mesa_format.
2720 _mesa_format_from_format_and_type(GLenum format
, GLenum type
)
2722 bool is_array_format
= true;
2724 bool normalized
= false, is_float
= false, is_signed
= false;
2725 int num_channels
= 0, type_size
= 0;
2727 /* Extract array format type information from the OpenGL data type */
2729 case GL_UNSIGNED_BYTE
:
2736 case GL_UNSIGNED_SHORT
:
2743 case GL_UNSIGNED_INT
:
2751 case GL_HALF_FLOAT_OES
:
2762 is_array_format
= false;
2766 /* Extract array format swizzle information from the OpenGL format */
2767 if (is_array_format
)
2768 is_array_format
= get_swizzle_from_gl_format(format
, swizzle
);
2770 /* If this is an array format type after checking data type and format,
2771 * create the array format
2773 if (is_array_format
) {
2774 normalized
= !_mesa_is_enum_format_integer(format
);
2775 num_channels
= _mesa_components_in_format(format
);
2777 return MESA_ARRAY_FORMAT(type_size
, is_signed
, is_float
,
2778 normalized
, num_channels
,
2779 swizzle
[0], swizzle
[1], swizzle
[2], swizzle
[3]);
2782 /* Otherwise this is not an array format, so return the mesa_format
2783 * matching the OpenGL format and data type
2786 case GL_UNSIGNED_SHORT_5_6_5
:
2787 if (format
== GL_RGB
)
2788 return MESA_FORMAT_B5G6R5_UNORM
;
2789 else if (format
== GL_BGR
)
2790 return MESA_FORMAT_R5G6B5_UNORM
;
2792 case GL_UNSIGNED_SHORT_5_6_5_REV
:
2793 if (format
== GL_RGB
)
2794 return MESA_FORMAT_R5G6B5_UNORM
;
2795 else if (format
== GL_BGR
)
2796 return MESA_FORMAT_B5G6R5_UNORM
;
2798 case GL_UNSIGNED_SHORT_4_4_4_4
:
2799 if (format
== GL_RGBA
)
2800 return MESA_FORMAT_A4B4G4R4_UNORM
;
2801 else if (format
== GL_BGRA
)
2802 return MESA_FORMAT_A4R4G4B4_UNORM
;
2803 else if (format
== GL_ABGR_EXT
)
2804 return MESA_FORMAT_R4G4B4A4_UNORM
;
2806 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2807 if (format
== GL_RGBA
)
2808 return MESA_FORMAT_R4G4B4A4_UNORM
;
2809 else if (format
== GL_BGRA
)
2810 return MESA_FORMAT_B4G4R4A4_UNORM
;
2811 else if (format
== GL_ABGR_EXT
)
2812 return MESA_FORMAT_A4B4G4R4_UNORM
;
2814 case GL_UNSIGNED_SHORT_5_5_5_1
:
2815 if (format
== GL_RGBA
)
2816 return MESA_FORMAT_A1B5G5R5_UNORM
;
2817 else if (format
== GL_BGRA
)
2818 return MESA_FORMAT_A1R5G5B5_UNORM
;
2820 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2821 if (format
== GL_RGBA
)
2822 return MESA_FORMAT_R5G5B5A1_UNORM
;
2823 else if (format
== GL_BGRA
)
2824 return MESA_FORMAT_B5G5R5A1_UNORM
;
2826 case GL_UNSIGNED_BYTE_3_3_2
:
2827 if (format
== GL_RGB
)
2828 return MESA_FORMAT_B2G3R3_UNORM
;
2830 case GL_UNSIGNED_BYTE_2_3_3_REV
:
2831 if (format
== GL_RGB
)
2832 return MESA_FORMAT_R3G3B2_UNORM
;
2834 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2835 if (format
== GL_RGB
)
2836 return MESA_FORMAT_R9G9B9E5_FLOAT
;
2838 case GL_UNSIGNED_INT_10_10_10_2
:
2839 if (format
== GL_RGBA
)
2840 return MESA_FORMAT_A2B10G10R10_UNORM
;
2841 else if (format
== GL_RGBA_INTEGER
)
2842 return MESA_FORMAT_A2B10G10R10_UINT
;
2843 else if (format
== GL_BGRA
)
2844 return MESA_FORMAT_A2R10G10B10_UNORM
;
2845 else if (format
== GL_BGRA_INTEGER
)
2846 return MESA_FORMAT_A2R10G10B10_UINT
;
2848 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2849 if (format
== GL_RGB
)
2850 return MESA_FORMAT_R10G10B10X2_UNORM
;
2851 if (format
== GL_RGBA
)
2852 return MESA_FORMAT_R10G10B10A2_UNORM
;
2853 else if (format
== GL_RGBA_INTEGER
)
2854 return MESA_FORMAT_R10G10B10A2_UINT
;
2855 else if (format
== GL_BGRA
)
2856 return MESA_FORMAT_B10G10R10A2_UNORM
;
2857 else if (format
== GL_BGRA_INTEGER
)
2858 return MESA_FORMAT_B10G10R10A2_UINT
;
2860 case GL_UNSIGNED_INT_8_8_8_8
:
2861 if (format
== GL_RGBA
)
2862 return MESA_FORMAT_A8B8G8R8_UNORM
;
2863 else if (format
== GL_BGRA
)
2864 return MESA_FORMAT_A8R8G8B8_UNORM
;
2865 else if (format
== GL_ABGR_EXT
)
2866 return MESA_FORMAT_R8G8B8A8_UNORM
;
2868 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2869 if (format
== GL_RGBA
)
2870 return MESA_FORMAT_R8G8B8A8_UNORM
;
2871 else if (format
== GL_BGRA
)
2872 return MESA_FORMAT_B8G8R8A8_UNORM
;
2873 else if (format
== GL_ABGR_EXT
)
2874 return MESA_FORMAT_A8B8G8R8_UNORM
;
2876 case GL_UNSIGNED_SHORT_8_8_MESA
:
2877 if (format
== GL_YCBCR_MESA
)
2878 return MESA_FORMAT_YCBCR
;
2880 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
2881 if (format
== GL_YCBCR_MESA
)
2882 return MESA_FORMAT_YCBCR_REV
;
2884 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2885 if (format
== GL_RGB
)
2886 return MESA_FORMAT_R11G11B10_FLOAT
;
2891 /* If we got here it means that we could not find a Mesa format that
2892 * matches the GL format/type provided. We may need to add a new Mesa
2893 * format in that case.
2895 unreachable("Unsupported format");