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"
31 #include "texcompress.h"
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 }
75 MAP4(ZERO
, ZERO
, ZERO
, 0),
105 MAP4(0, ZERO
, ZERO
, ONE
),
111 MAP4(ZERO
, 0, ZERO
, ONE
),
117 MAP4(ZERO
, ZERO
, 0, ONE
),
141 MAP4(0, 1, ZERO
, ONE
),
147 * Convert a GL image format enum to an IDX_* value (see above).
150 get_map_idx(GLenum value
)
154 case GL_LUMINANCE_INTEGER_EXT
:
155 return IDX_LUMINANCE
;
157 case GL_ALPHA_INTEGER
:
160 return IDX_INTENSITY
;
161 case GL_LUMINANCE_ALPHA
:
162 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
163 return IDX_LUMINANCE_ALPHA
;
168 case GL_RGBA_INTEGER
:
181 case GL_BGRA_INTEGER
:
189 _mesa_problem(NULL
, "Unexpected inFormat %s",
190 _mesa_enum_to_string(value
));
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
204 _mesa_compute_component_mapping(GLenum inFormat
, GLenum outFormat
, GLubyte
*map
)
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
;
212 for (i
= 0; i
< 4; i
++)
213 map
[i
] = in2rgba
[rgba2out
[i
]];
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
),
232 * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
235 _mesa_type_is_packed(GLenum 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_EXT
:
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
:
265 * Get the size of a GL data type.
267 * \param type GL data type.
269 * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
270 * if an invalid type enum.
273 _mesa_sizeof_type(GLenum type
)
278 case GL_UNSIGNED_BYTE
:
279 return sizeof(GLubyte
);
281 return sizeof(GLbyte
);
282 case GL_UNSIGNED_SHORT
:
283 return sizeof(GLushort
);
285 return sizeof(GLshort
);
286 case GL_UNSIGNED_INT
:
287 return sizeof(GLuint
);
289 return sizeof(GLint
);
291 return sizeof(GLfloat
);
293 return sizeof(GLdouble
);
294 case GL_HALF_FLOAT_ARB
:
295 case GL_HALF_FLOAT_OES
:
296 return sizeof(GLhalfARB
);
298 return sizeof(GLfixed
);
306 * Same as _mesa_sizeof_type() but also accepting the packed pixel
310 _mesa_sizeof_packed_type(GLenum type
)
315 case GL_UNSIGNED_BYTE
:
316 return sizeof(GLubyte
);
318 return sizeof(GLbyte
);
319 case GL_UNSIGNED_SHORT
:
320 return sizeof(GLushort
);
322 return sizeof(GLshort
);
323 case GL_UNSIGNED_INT
:
324 return sizeof(GLuint
);
326 return sizeof(GLint
);
327 case GL_HALF_FLOAT_ARB
:
328 case GL_HALF_FLOAT_OES
:
329 return sizeof(GLhalfARB
);
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_EXT
:
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
:
362 * Get the number of components in a pixel format.
364 * \param format pixel format.
366 * \return the number of components in the given format, or -1 if a bad format.
369 _mesa_components_in_format(GLenum format
)
373 case GL_STENCIL_INDEX
:
374 case GL_DEPTH_COMPONENT
:
376 case GL_RED_INTEGER_EXT
:
378 case GL_GREEN_INTEGER_EXT
:
380 case GL_BLUE_INTEGER_EXT
:
382 case GL_ALPHA_INTEGER_EXT
:
384 case GL_LUMINANCE_INTEGER_EXT
:
388 case GL_LUMINANCE_ALPHA
:
389 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
392 case GL_DEPTH_STENCIL_EXT
:
398 case GL_RGB_INTEGER_EXT
:
399 case GL_BGR_INTEGER_EXT
:
405 case GL_RGBA_INTEGER_EXT
:
406 case GL_BGRA_INTEGER_EXT
:
416 * Get the bytes per pixel of pixel format type pair.
418 * \param format pixel format.
419 * \param type pixel type.
421 * \return bytes per pixel, or -1 if a bad format or type was given.
424 _mesa_bytes_per_pixel(GLenum format
, GLenum type
)
426 GLint comps
= _mesa_components_in_format(format
);
432 return 0; /* special case */
434 case GL_UNSIGNED_BYTE
:
435 return comps
* sizeof(GLubyte
);
437 case GL_UNSIGNED_SHORT
:
438 return comps
* sizeof(GLshort
);
440 case GL_UNSIGNED_INT
:
441 return comps
* sizeof(GLint
);
443 return comps
* sizeof(GLfloat
);
444 case GL_HALF_FLOAT_ARB
:
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_EXT
|| format
== GL_BGR_INTEGER_EXT
)
451 return sizeof(GLubyte
);
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_EXT
|| format
== GL_BGR_INTEGER_EXT
)
458 return sizeof(GLushort
);
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_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
465 return sizeof(GLushort
);
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_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
472 return sizeof(GLushort
);
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_EXT
|| format
== GL_BGRA_INTEGER_EXT
||
480 return sizeof(GLuint
);
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_EXT
|| format
== GL_BGRA_INTEGER_EXT
||
488 return sizeof(GLuint
);
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
);
497 case GL_UNSIGNED_INT_24_8_EXT
:
498 if (format
== GL_DEPTH_COMPONENT
||
499 format
== GL_DEPTH_STENCIL_EXT
)
500 return sizeof(GLuint
);
503 case GL_UNSIGNED_INT_5_9_9_9_REV
:
504 if (format
== GL_RGB
)
505 return sizeof(GLuint
);
508 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
509 if (format
== GL_RGB
)
510 return sizeof(GLuint
);
513 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
514 if (format
== GL_DEPTH_STENCIL
)
525 * Get the number of bytes for a vertex attrib with the given number of
526 * components and type.
528 * \param comps number of components.
529 * \param type data type.
531 * \return bytes per attribute, or -1 if a bad comps/type combination was given.
534 _mesa_bytes_per_vertex_attrib(GLint comps
, GLenum type
)
538 case GL_UNSIGNED_BYTE
:
539 return comps
* sizeof(GLubyte
);
541 case GL_UNSIGNED_SHORT
:
542 return comps
* sizeof(GLshort
);
544 case GL_UNSIGNED_INT
:
545 return comps
* sizeof(GLint
);
547 return comps
* sizeof(GLfloat
);
548 case GL_HALF_FLOAT_ARB
:
549 case GL_HALF_FLOAT_OES
:
550 return comps
* sizeof(GLhalfARB
);
552 return comps
* sizeof(GLdouble
);
554 return comps
* sizeof(GLfixed
);
555 case GL_INT_2_10_10_10_REV
:
556 case GL_UNSIGNED_INT_2_10_10_10_REV
:
558 return sizeof(GLuint
);
561 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
563 return sizeof(GLuint
);
572 * Test if the given format is unsized.
575 _mesa_is_enum_format_unsized(GLenum format
)
590 case GL_LUMINANCE_ALPHA
:
595 case GL_SLUMINANCE_ALPHA
:
602 case GL_INTENSITY_SNORM
:
603 case GL_LUMINANCE_SNORM
:
604 case GL_LUMINANCE_ALPHA_SNORM
:
607 case GL_GREEN_INTEGER
:
608 case GL_BLUE_INTEGER
:
609 case GL_ALPHA_INTEGER
:
611 case GL_RGBA_INTEGER
:
613 case GL_BGRA_INTEGER
:
615 case GL_LUMINANCE_INTEGER_EXT
:
616 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
618 case GL_DEPTH_COMPONENT
:
619 case GL_DEPTH_STENCIL
:
620 case GL_STENCIL_INDEX
:
628 * Test if the given format is a UNORM (unsigned-normalized) format.
631 _mesa_is_enum_format_unorm(GLenum format
)
650 case GL_LUMINANCE_ALPHA
:
651 case GL_SLUMINANCE_ALPHA
:
652 case GL_LUMINANCE4_ALPHA4
:
653 case GL_LUMINANCE6_ALPHA2
:
654 case GL_LUMINANCE8_ALPHA8
:
655 case GL_LUMINANCE12_ALPHA4
:
656 case GL_LUMINANCE12_ALPHA12
:
657 case GL_LUMINANCE16_ALPHA16
:
699 * Test if the given format is a SNORM (signed-normalized) format.
702 _mesa_is_enum_format_snorm(GLenum format
)
705 /* signed, normalized texture formats */
717 case GL_RGBA16_SNORM
:
719 case GL_ALPHA8_SNORM
:
720 case GL_ALPHA16_SNORM
:
721 case GL_LUMINANCE_SNORM
:
722 case GL_LUMINANCE8_SNORM
:
723 case GL_LUMINANCE16_SNORM
:
724 case GL_LUMINANCE_ALPHA_SNORM
:
725 case GL_LUMINANCE8_ALPHA8_SNORM
:
726 case GL_LUMINANCE16_ALPHA16_SNORM
:
727 case GL_INTENSITY_SNORM
:
728 case GL_INTENSITY8_SNORM
:
729 case GL_INTENSITY16_SNORM
:
737 * Test if the given format is an integer (non-normalized) format.
740 _mesa_is_enum_format_unsigned_int(GLenum format
)
743 /* specific integer formats */
744 case GL_RGBA32UI_EXT
:
748 case GL_ALPHA32UI_EXT
:
749 case GL_INTENSITY32UI_EXT
:
750 case GL_LUMINANCE32UI_EXT
:
751 case GL_LUMINANCE_ALPHA32UI_EXT
:
752 case GL_RGBA16UI_EXT
:
756 case GL_ALPHA16UI_EXT
:
757 case GL_INTENSITY16UI_EXT
:
758 case GL_LUMINANCE16UI_EXT
:
759 case GL_LUMINANCE_ALPHA16UI_EXT
:
764 case GL_ALPHA8UI_EXT
:
765 case GL_INTENSITY8UI_EXT
:
766 case GL_LUMINANCE8UI_EXT
:
767 case GL_LUMINANCE_ALPHA8UI_EXT
:
777 * Test if the given format is an integer (non-normalized) format.
780 _mesa_is_enum_format_signed_int(GLenum format
)
783 /* generic integer formats */
784 case GL_RED_INTEGER_EXT
:
785 case GL_GREEN_INTEGER_EXT
:
786 case GL_BLUE_INTEGER_EXT
:
787 case GL_ALPHA_INTEGER_EXT
:
788 case GL_RGB_INTEGER_EXT
:
789 case GL_RGBA_INTEGER_EXT
:
790 case GL_BGR_INTEGER_EXT
:
791 case GL_BGRA_INTEGER_EXT
:
792 case GL_LUMINANCE_INTEGER_EXT
:
793 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
795 /* specific integer formats */
800 case GL_ALPHA32I_EXT
:
801 case GL_INTENSITY32I_EXT
:
802 case GL_LUMINANCE32I_EXT
:
803 case GL_LUMINANCE_ALPHA32I_EXT
:
808 case GL_ALPHA16I_EXT
:
809 case GL_INTENSITY16I_EXT
:
810 case GL_LUMINANCE16I_EXT
:
811 case GL_LUMINANCE_ALPHA16I_EXT
:
817 case GL_INTENSITY8I_EXT
:
818 case GL_LUMINANCE8I_EXT
:
819 case GL_LUMINANCE_ALPHA8I_EXT
:
827 * Test if the given format is an ASTC 2D format.
830 is_astc_2d_format(GLenum internalFormat
)
832 switch (internalFormat
) {
833 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
834 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
835 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
836 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
837 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
838 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
839 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
840 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
841 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
842 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
843 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
844 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
845 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
846 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
847 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
848 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
849 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
850 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
851 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
852 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
853 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
854 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
855 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
856 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
857 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
858 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
859 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
860 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
868 * Test if the given format is an ASTC 3D format.
871 is_astc_3d_format(GLenum internalFormat
)
873 switch (internalFormat
) {
874 case GL_COMPRESSED_RGBA_ASTC_3x3x3_OES
:
875 case GL_COMPRESSED_RGBA_ASTC_4x3x3_OES
:
876 case GL_COMPRESSED_RGBA_ASTC_4x4x3_OES
:
877 case GL_COMPRESSED_RGBA_ASTC_4x4x4_OES
:
878 case GL_COMPRESSED_RGBA_ASTC_5x4x4_OES
:
879 case GL_COMPRESSED_RGBA_ASTC_5x5x4_OES
:
880 case GL_COMPRESSED_RGBA_ASTC_5x5x5_OES
:
881 case GL_COMPRESSED_RGBA_ASTC_6x5x5_OES
:
882 case GL_COMPRESSED_RGBA_ASTC_6x6x5_OES
:
883 case GL_COMPRESSED_RGBA_ASTC_6x6x6_OES
:
884 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES
:
885 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES
:
886 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES
:
887 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES
:
888 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES
:
889 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES
:
890 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES
:
891 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES
:
892 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES
:
893 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES
:
901 * Test if the given format is an ASTC format.
904 _mesa_is_astc_format(GLenum internalFormat
)
906 return is_astc_2d_format(internalFormat
) ||
907 is_astc_3d_format(internalFormat
);
911 * Test if the given format is an ETC2 format.
914 _mesa_is_etc2_format(GLenum internalFormat
)
916 switch (internalFormat
) {
917 case GL_COMPRESSED_RGB8_ETC2
:
918 case GL_COMPRESSED_SRGB8_ETC2
:
919 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
920 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
921 case GL_COMPRESSED_R11_EAC
:
922 case GL_COMPRESSED_RG11_EAC
:
923 case GL_COMPRESSED_SIGNED_R11_EAC
:
924 case GL_COMPRESSED_SIGNED_RG11_EAC
:
925 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
926 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
934 * Test if the given format is an integer (non-normalized) format.
937 _mesa_is_enum_format_integer(GLenum format
)
939 return _mesa_is_enum_format_unsigned_int(format
) ||
940 _mesa_is_enum_format_signed_int(format
);
945 _mesa_is_type_unsigned(GLenum type
)
948 case GL_UNSIGNED_INT
:
949 case GL_UNSIGNED_INT_8_8_8_8
:
950 case GL_UNSIGNED_INT_8_8_8_8_REV
:
951 case GL_UNSIGNED_INT_10_10_10_2
:
952 case GL_UNSIGNED_INT_2_10_10_10_REV
:
954 case GL_UNSIGNED_SHORT
:
955 case GL_UNSIGNED_SHORT_4_4_4_4
:
956 case GL_UNSIGNED_SHORT_5_5_5_1
:
957 case GL_UNSIGNED_SHORT_5_6_5
:
958 case GL_UNSIGNED_SHORT_5_6_5_REV
:
959 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
960 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
961 case GL_UNSIGNED_SHORT_8_8_MESA
:
962 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
964 case GL_UNSIGNED_BYTE
:
965 case GL_UNSIGNED_BYTE_3_3_2
:
966 case GL_UNSIGNED_BYTE_2_3_3_REV
:
976 * Test if the given image format is a color/RGBA format (i.e., not color
977 * index, depth, stencil, etc).
978 * \param format the image format value (may by an internal texture format)
979 * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
982 _mesa_is_color_format(GLenum format
)
1000 case GL_LUMINANCE_ALPHA
:
1001 case GL_LUMINANCE4_ALPHA4
:
1002 case GL_LUMINANCE6_ALPHA2
:
1003 case GL_LUMINANCE8_ALPHA8
:
1004 case GL_LUMINANCE12_ALPHA4
:
1005 case GL_LUMINANCE12_ALPHA12
:
1006 case GL_LUMINANCE16_ALPHA16
:
1010 case GL_INTENSITY12
:
1011 case GL_INTENSITY16
:
1039 /* float texture formats */
1040 case GL_ALPHA16F_ARB
:
1041 case GL_ALPHA32F_ARB
:
1042 case GL_LUMINANCE16F_ARB
:
1043 case GL_LUMINANCE32F_ARB
:
1044 case GL_LUMINANCE_ALPHA16F_ARB
:
1045 case GL_LUMINANCE_ALPHA32F_ARB
:
1046 case GL_INTENSITY16F_ARB
:
1047 case GL_INTENSITY32F_ARB
:
1054 case GL_RGBA16F_ARB
:
1055 case GL_RGBA32F_ARB
:
1056 /* compressed formats */
1057 case GL_COMPRESSED_ALPHA
:
1058 case GL_COMPRESSED_LUMINANCE
:
1059 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1060 case GL_COMPRESSED_INTENSITY
:
1061 case GL_COMPRESSED_RED
:
1062 case GL_COMPRESSED_RG
:
1063 case GL_COMPRESSED_RGB
:
1064 case GL_COMPRESSED_RGBA
:
1069 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
1070 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
1071 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
1072 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
1073 case GL_COMPRESSED_RGB_FXT1_3DFX
:
1074 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
1077 case GL_SRGB_ALPHA_EXT
:
1078 case GL_SRGB8_ALPHA8_EXT
:
1079 case GL_SLUMINANCE_ALPHA_EXT
:
1080 case GL_SLUMINANCE8_ALPHA8_EXT
:
1081 case GL_SLUMINANCE_EXT
:
1082 case GL_SLUMINANCE8_EXT
:
1083 case GL_COMPRESSED_SRGB_EXT
:
1084 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1085 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
1086 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1087 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1088 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1089 case GL_COMPRESSED_SLUMINANCE_EXT
:
1090 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
1091 case GL_COMPRESSED_RED_RGTC1
:
1092 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
1093 case GL_COMPRESSED_RG_RGTC2
:
1094 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
1095 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
1096 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
1097 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
1098 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
1099 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1100 case GL_ETC1_RGB8_OES
:
1101 case GL_COMPRESSED_RGB8_ETC2
:
1102 case GL_COMPRESSED_SRGB8_ETC2
:
1103 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
1104 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1105 case GL_COMPRESSED_R11_EAC
:
1106 case GL_COMPRESSED_RG11_EAC
:
1107 case GL_COMPRESSED_SIGNED_R11_EAC
:
1108 case GL_COMPRESSED_SIGNED_RG11_EAC
:
1109 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1110 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1111 case GL_COMPRESSED_RGBA_BPTC_UNORM
:
1112 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1113 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT
:
1114 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT
:
1115 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
1116 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
1117 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
1118 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
1119 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
1120 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
1121 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
1122 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
1123 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
1124 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
1125 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
1126 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
1127 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
1128 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
1129 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
1130 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
1131 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
1132 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
1133 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
1134 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
1135 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
1136 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
1137 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
1138 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
1139 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
1140 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
1141 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
1142 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
1143 /* generic integer formats */
1144 case GL_RED_INTEGER_EXT
:
1145 case GL_GREEN_INTEGER_EXT
:
1146 case GL_BLUE_INTEGER_EXT
:
1147 case GL_ALPHA_INTEGER_EXT
:
1148 case GL_RGB_INTEGER_EXT
:
1149 case GL_RGBA_INTEGER_EXT
:
1150 case GL_BGR_INTEGER_EXT
:
1151 case GL_BGRA_INTEGER_EXT
:
1153 case GL_LUMINANCE_INTEGER_EXT
:
1154 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1155 /* sized integer formats */
1156 case GL_RGBA32UI_EXT
:
1157 case GL_RGB32UI_EXT
:
1160 case GL_ALPHA32UI_EXT
:
1161 case GL_INTENSITY32UI_EXT
:
1162 case GL_LUMINANCE32UI_EXT
:
1163 case GL_LUMINANCE_ALPHA32UI_EXT
:
1164 case GL_RGBA16UI_EXT
:
1165 case GL_RGB16UI_EXT
:
1168 case GL_ALPHA16UI_EXT
:
1169 case GL_INTENSITY16UI_EXT
:
1170 case GL_LUMINANCE16UI_EXT
:
1171 case GL_LUMINANCE_ALPHA16UI_EXT
:
1172 case GL_RGBA8UI_EXT
:
1176 case GL_ALPHA8UI_EXT
:
1177 case GL_INTENSITY8UI_EXT
:
1178 case GL_LUMINANCE8UI_EXT
:
1179 case GL_LUMINANCE_ALPHA8UI_EXT
:
1180 case GL_RGBA32I_EXT
:
1184 case GL_ALPHA32I_EXT
:
1185 case GL_INTENSITY32I_EXT
:
1186 case GL_LUMINANCE32I_EXT
:
1187 case GL_LUMINANCE_ALPHA32I_EXT
:
1188 case GL_RGBA16I_EXT
:
1192 case GL_ALPHA16I_EXT
:
1193 case GL_INTENSITY16I_EXT
:
1194 case GL_LUMINANCE16I_EXT
:
1195 case GL_LUMINANCE_ALPHA16I_EXT
:
1200 case GL_ALPHA8I_EXT
:
1201 case GL_INTENSITY8I_EXT
:
1202 case GL_LUMINANCE8I_EXT
:
1203 case GL_LUMINANCE_ALPHA8I_EXT
:
1204 /* signed, normalized texture formats */
1213 case GL_RGB16_SNORM
:
1215 case GL_RGBA8_SNORM
:
1216 case GL_RGBA16_SNORM
:
1217 case GL_ALPHA_SNORM
:
1218 case GL_ALPHA8_SNORM
:
1219 case GL_ALPHA16_SNORM
:
1220 case GL_LUMINANCE_SNORM
:
1221 case GL_LUMINANCE8_SNORM
:
1222 case GL_LUMINANCE16_SNORM
:
1223 case GL_LUMINANCE_ALPHA_SNORM
:
1224 case GL_LUMINANCE8_ALPHA8_SNORM
:
1225 case GL_LUMINANCE16_ALPHA16_SNORM
:
1226 case GL_INTENSITY_SNORM
:
1227 case GL_INTENSITY8_SNORM
:
1228 case GL_INTENSITY16_SNORM
:
1230 case GL_R11F_G11F_B10F
:
1233 case GL_YCBCR_MESA
: /* not considered to be RGB */
1242 * Test if the given image format is a depth component format.
1245 _mesa_is_depth_format(GLenum format
)
1248 case GL_DEPTH_COMPONENT
:
1249 case GL_DEPTH_COMPONENT16
:
1250 case GL_DEPTH_COMPONENT24
:
1251 case GL_DEPTH_COMPONENT32
:
1252 case GL_DEPTH_COMPONENT32F
:
1261 * Test if the given image format is a stencil format.
1264 _mesa_is_stencil_format(GLenum format
)
1267 case GL_STENCIL_INDEX
:
1276 * Test if the given image format is a YCbCr format.
1279 _mesa_is_ycbcr_format(GLenum format
)
1291 * Test if the given image format is a depth+stencil format.
1294 _mesa_is_depthstencil_format(GLenum format
)
1297 case GL_DEPTH24_STENCIL8_EXT
:
1298 case GL_DEPTH_STENCIL_EXT
:
1299 case GL_DEPTH32F_STENCIL8
:
1308 * Test if the given image format is a depth or stencil format.
1311 _mesa_is_depth_or_stencil_format(GLenum format
)
1314 case GL_DEPTH_COMPONENT
:
1315 case GL_DEPTH_COMPONENT16
:
1316 case GL_DEPTH_COMPONENT24
:
1317 case GL_DEPTH_COMPONENT32
:
1318 case GL_STENCIL_INDEX
:
1319 case GL_STENCIL_INDEX1_EXT
:
1320 case GL_STENCIL_INDEX4_EXT
:
1321 case GL_STENCIL_INDEX8_EXT
:
1322 case GL_STENCIL_INDEX16_EXT
:
1323 case GL_DEPTH_STENCIL_EXT
:
1324 case GL_DEPTH24_STENCIL8_EXT
:
1325 case GL_DEPTH_COMPONENT32F
:
1326 case GL_DEPTH32F_STENCIL8
:
1335 * Test if an image format is a supported compressed format.
1336 * \param format the internal format token provided by the user.
1337 * \return GL_TRUE if compressed, GL_FALSE if uncompressed
1340 _mesa_is_compressed_format(const struct gl_context
*ctx
, GLenum format
)
1342 mesa_format m_format
= _mesa_glenum_to_compressed_format(format
);
1344 /* Some formats in this switch have an equivalent mesa_format_layout
1345 * to the compressed formats in the layout switch below and thus
1346 * must be handled first.
1353 return _mesa_is_desktop_gl(ctx
) &&
1354 ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1355 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1356 return ctx
->API
== API_OPENGL_COMPAT
1357 && ctx
->Extensions
.ATI_texture_compression_3dc
;
1358 case GL_PALETTE4_RGB8_OES
:
1359 case GL_PALETTE4_RGBA8_OES
:
1360 case GL_PALETTE4_R5_G6_B5_OES
:
1361 case GL_PALETTE4_RGBA4_OES
:
1362 case GL_PALETTE4_RGB5_A1_OES
:
1363 case GL_PALETTE8_RGB8_OES
:
1364 case GL_PALETTE8_RGBA8_OES
:
1365 case GL_PALETTE8_R5_G6_B5_OES
:
1366 case GL_PALETTE8_RGBA4_OES
:
1367 case GL_PALETTE8_RGB5_A1_OES
:
1368 return ctx
->API
== API_OPENGLES
;
1371 switch (_mesa_get_format_layout(m_format
)) {
1372 case MESA_FORMAT_LAYOUT_S3TC
:
1373 if (_mesa_get_format_color_encoding(m_format
) == GL_LINEAR
) {
1374 /* Assume that the ANGLE flag will always be set if the
1377 return ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1379 return _mesa_is_desktop_gl(ctx
)
1380 && ctx
->Extensions
.EXT_texture_sRGB
1381 && ctx
->Extensions
.EXT_texture_compression_s3tc
;
1383 case MESA_FORMAT_LAYOUT_FXT1
:
1384 return _mesa_is_desktop_gl(ctx
)
1385 && ctx
->Extensions
.TDFX_texture_compression_FXT1
;
1386 case MESA_FORMAT_LAYOUT_RGTC
:
1387 return _mesa_is_desktop_gl(ctx
)
1388 && ctx
->Extensions
.ARB_texture_compression_rgtc
;
1389 case MESA_FORMAT_LAYOUT_LATC
:
1390 return ctx
->API
== API_OPENGL_COMPAT
1391 && ctx
->Extensions
.EXT_texture_compression_latc
;
1392 case MESA_FORMAT_LAYOUT_ETC1
:
1393 return _mesa_is_gles(ctx
)
1394 && ctx
->Extensions
.OES_compressed_ETC1_RGB8_texture
;
1395 case MESA_FORMAT_LAYOUT_ETC2
:
1396 return _mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
;
1397 case MESA_FORMAT_LAYOUT_BPTC
:
1398 return _mesa_is_desktop_gl(ctx
) &&
1399 ctx
->Extensions
.ARB_texture_compression_bptc
;
1400 case MESA_FORMAT_LAYOUT_ASTC
:
1401 return ctx
->Extensions
.KHR_texture_compression_astc_ldr
;
1408 * Test if the given format represents an sRGB format.
1409 * \param format the GL format (can be an internal format)
1410 * \return GL_TRUE if format is sRGB, GL_FALSE otherwise
1413 _mesa_is_srgb_format(GLenum format
)
1419 case GL_SRGB8_ALPHA8
:
1420 case GL_COMPRESSED_SRGB
:
1421 case GL_COMPRESSED_SRGB_ALPHA
:
1422 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1423 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1424 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1425 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1426 case GL_COMPRESSED_SRGB8_ETC2
:
1427 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1428 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1429 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1430 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
1431 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
1432 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
1433 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
1434 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
1435 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
1436 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
1437 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
1438 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
1439 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
1440 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
1441 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
1442 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
1443 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
1453 * Convert various unpack formats to the corresponding base format.
1456 _mesa_unpack_format_to_base_format(GLenum format
)
1459 case GL_RED_INTEGER
:
1461 case GL_GREEN_INTEGER
:
1463 case GL_BLUE_INTEGER
:
1465 case GL_ALPHA_INTEGER
:
1469 case GL_RGB_INTEGER
:
1471 case GL_RGBA_INTEGER
:
1473 case GL_BGR_INTEGER
:
1475 case GL_BGRA_INTEGER
:
1477 case GL_LUMINANCE_INTEGER_EXT
:
1478 return GL_LUMINANCE
;
1479 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1480 return GL_LUMINANCE_ALPHA
;
1491 case GL_LUMINANCE_ALPHA
:
1498 * Convert various base formats to the corresponding integer format.
1501 _mesa_base_format_to_integer_format(GLenum format
)
1505 return GL_RED_INTEGER
;
1507 return GL_GREEN_INTEGER
;
1509 return GL_BLUE_INTEGER
;
1511 return GL_RG_INTEGER
;
1513 return GL_RGB_INTEGER
;
1515 return GL_RGBA_INTEGER
;
1517 return GL_BGR_INTEGER
;
1519 return GL_BGRA_INTEGER
;
1521 return GL_ALPHA_INTEGER
;
1523 return GL_LUMINANCE_INTEGER_EXT
;
1524 case GL_LUMINANCE_ALPHA
:
1525 return GL_LUMINANCE_ALPHA_INTEGER_EXT
;
1533 * Does the given base texture/renderbuffer format have the channel
1537 _mesa_base_format_has_channel(GLenum base_format
, GLenum pname
)
1540 case GL_TEXTURE_RED_SIZE
:
1541 case GL_TEXTURE_RED_TYPE
:
1542 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1543 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1544 case GL_INTERNALFORMAT_RED_SIZE
:
1545 case GL_INTERNALFORMAT_RED_TYPE
:
1546 if (base_format
== GL_RED
||
1547 base_format
== GL_RG
||
1548 base_format
== GL_RGB
||
1549 base_format
== GL_RGBA
) {
1553 case GL_TEXTURE_GREEN_SIZE
:
1554 case GL_TEXTURE_GREEN_TYPE
:
1555 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1556 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1557 case GL_INTERNALFORMAT_GREEN_SIZE
:
1558 case GL_INTERNALFORMAT_GREEN_TYPE
:
1559 if (base_format
== GL_RG
||
1560 base_format
== GL_RGB
||
1561 base_format
== GL_RGBA
) {
1565 case GL_TEXTURE_BLUE_SIZE
:
1566 case GL_TEXTURE_BLUE_TYPE
:
1567 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1568 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1569 case GL_INTERNALFORMAT_BLUE_SIZE
:
1570 case GL_INTERNALFORMAT_BLUE_TYPE
:
1571 if (base_format
== GL_RGB
||
1572 base_format
== GL_RGBA
) {
1576 case GL_TEXTURE_ALPHA_SIZE
:
1577 case GL_TEXTURE_ALPHA_TYPE
:
1578 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1579 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1580 case GL_INTERNALFORMAT_ALPHA_SIZE
:
1581 case GL_INTERNALFORMAT_ALPHA_TYPE
:
1582 if (base_format
== GL_RGBA
||
1583 base_format
== GL_ALPHA
||
1584 base_format
== GL_LUMINANCE_ALPHA
) {
1588 case GL_TEXTURE_LUMINANCE_SIZE
:
1589 case GL_TEXTURE_LUMINANCE_TYPE
:
1590 if (base_format
== GL_LUMINANCE
||
1591 base_format
== GL_LUMINANCE_ALPHA
) {
1595 case GL_TEXTURE_INTENSITY_SIZE
:
1596 case GL_TEXTURE_INTENSITY_TYPE
:
1597 if (base_format
== GL_INTENSITY
) {
1601 case GL_TEXTURE_DEPTH_SIZE
:
1602 case GL_TEXTURE_DEPTH_TYPE
:
1603 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1604 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1605 case GL_INTERNALFORMAT_DEPTH_SIZE
:
1606 case GL_INTERNALFORMAT_DEPTH_TYPE
:
1607 if (base_format
== GL_DEPTH_STENCIL
||
1608 base_format
== GL_DEPTH_COMPONENT
) {
1612 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1613 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1614 case GL_INTERNALFORMAT_STENCIL_SIZE
:
1615 case GL_INTERNALFORMAT_STENCIL_TYPE
:
1616 if (base_format
== GL_DEPTH_STENCIL
||
1617 base_format
== GL_STENCIL_INDEX
) {
1622 _mesa_warning(NULL
, "%s: Unexpected channel token 0x%x\n",
1632 * Returns the number of channels/components for a base format.
1635 _mesa_base_format_component_count(GLenum base_format
)
1637 switch (base_format
) {
1642 case GL_DEPTH_COMPONENT
:
1645 case GL_LUMINANCE_ALPHA
:
1646 case GL_DEPTH_STENCIL
:
1659 * If format is a generic compressed format, return the corresponding
1660 * non-compressed format. For other formats, return the format as-is.
1663 _mesa_generic_compressed_format_to_uncompressed_format(GLenum format
)
1666 case GL_COMPRESSED_RED
:
1668 case GL_COMPRESSED_RG
:
1670 case GL_COMPRESSED_RGB
:
1672 case GL_COMPRESSED_RGBA
:
1674 case GL_COMPRESSED_ALPHA
:
1676 case GL_COMPRESSED_LUMINANCE
:
1677 return GL_LUMINANCE
;
1678 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1679 return GL_LUMINANCE_ALPHA
;
1680 case GL_COMPRESSED_INTENSITY
:
1681 return GL_INTENSITY
;
1683 case GL_COMPRESSED_SRGB
:
1685 case GL_COMPRESSED_SRGB_ALPHA
:
1686 return GL_SRGB_ALPHA
;
1687 case GL_COMPRESSED_SLUMINANCE
:
1688 return GL_SLUMINANCE
;
1689 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
1690 return GL_SLUMINANCE_ALPHA
;
1698 * Return the equivalent non-generic internal format.
1699 * This is useful for comparing whether two internal formats are equivalent.
1702 _mesa_get_nongeneric_internalformat(GLenum format
)
1705 /* GL 1.1 formats. */
1713 case GL_LUMINANCE_ALPHA
:
1714 return GL_LUMINANCE8_ALPHA8
;
1717 return GL_LUMINANCE8
;
1721 return GL_INTENSITY8
;
1723 /* GL_ARB_texture_rg */
1729 /* GL_EXT_texture_sRGB */
1733 return GL_SRGB8_ALPHA8
;
1735 return GL_SLUMINANCE8
;
1736 case GL_SLUMINANCE_ALPHA
:
1737 return GL_SLUMINANCE8_ALPHA8
;
1739 /* GL_EXT_texture_snorm */
1741 return GL_RGBA8_SNORM
;
1743 return GL_RGB8_SNORM
;
1745 return GL_RG8_SNORM
;
1748 case GL_LUMINANCE_ALPHA_SNORM
:
1749 return GL_LUMINANCE8_ALPHA8_SNORM
;
1750 case GL_LUMINANCE_SNORM
:
1751 return GL_LUMINANCE8_SNORM
;
1752 case GL_ALPHA_SNORM
:
1753 return GL_ALPHA8_SNORM
;
1754 case GL_INTENSITY_SNORM
:
1755 return GL_INTENSITY8_SNORM
;
1764 * Convert an sRGB internal format to linear.
1767 _mesa_get_linear_internalformat(GLenum format
)
1776 case GL_SRGB8_ALPHA8
:
1778 case GL_SLUMINANCE8
:
1779 return GL_LUMINANCE8
;
1781 return GL_LUMINANCE
;
1782 case GL_SLUMINANCE_ALPHA
:
1783 return GL_LUMINANCE_ALPHA
;
1784 case GL_SLUMINANCE8_ALPHA8
:
1785 return GL_LUMINANCE8_ALPHA8
;
1793 * Do error checking of format/type combinations for glReadPixels,
1794 * glDrawPixels and glTex[Sub]Image. Note that depending on the format
1795 * and type values, we may either generate GL_INVALID_OPERATION or
1798 * \param format pixel format.
1799 * \param type pixel type.
1801 * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
1804 _mesa_error_check_format_and_type(const struct gl_context
*ctx
,
1805 GLenum format
, GLenum type
)
1807 /* From OpenGL 3.3 spec, page 220:
1808 * "If the format is DEPTH_STENCIL, then values are taken from
1809 * both the depth buffer and the stencil buffer. If there is no
1810 * depth buffer or if there is no stencil buffer, then the error
1811 * INVALID_OPERATION occurs. If the type parameter is not
1812 * UNSIGNED_INT_24_8 or FLOAT_32_UNSIGNED_INT_24_8_REV, then the
1813 * error INVALID_ENUM occurs."
1815 * OpenGL ES still generates GL_INVALID_OPERATION because glReadPixels
1816 * cannot be used to read depth or stencil in that API.
1818 if (_mesa_is_desktop_gl(ctx
) && format
== GL_DEPTH_STENCIL
1819 && type
!= GL_UNSIGNED_INT_24_8
1820 && type
!= GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
1821 return GL_INVALID_ENUM
;
1823 /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
1826 if (format
!= GL_COLOR_INDEX
&& format
!= GL_STENCIL_INDEX
) {
1827 return GL_INVALID_ENUM
;
1831 case GL_UNSIGNED_BYTE_3_3_2
:
1832 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1833 case GL_UNSIGNED_SHORT_5_6_5
:
1834 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1835 if (format
== GL_RGB
) {
1838 if (format
== GL_RGB_INTEGER_EXT
&&
1839 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1842 return GL_INVALID_OPERATION
;
1844 case GL_UNSIGNED_SHORT_4_4_4_4
:
1845 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1846 case GL_UNSIGNED_INT_8_8_8_8
:
1847 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1848 if (format
== GL_RGBA
||
1849 format
== GL_BGRA
||
1850 format
== GL_ABGR_EXT
) {
1853 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1854 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1857 return GL_INVALID_OPERATION
;
1859 case GL_UNSIGNED_SHORT_5_5_5_1
:
1860 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1861 case GL_UNSIGNED_INT_10_10_10_2
:
1862 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1863 if (format
== GL_RGBA
||
1864 format
== GL_BGRA
) {
1867 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1868 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1871 if (type
== GL_UNSIGNED_INT_2_10_10_10_REV
&& format
== GL_RGB
&&
1872 ctx
->API
== API_OPENGLES2
) {
1873 break; /* OK by GL_EXT_texture_type_2_10_10_10_REV */
1875 return GL_INVALID_OPERATION
;
1877 case GL_UNSIGNED_INT_24_8
:
1878 /* Depth buffer OK to read in OpenGL ES (NV_read_depth). */
1879 if (ctx
->API
== API_OPENGLES2
&& format
== GL_DEPTH_COMPONENT
)
1882 if (format
!= GL_DEPTH_STENCIL
) {
1883 return GL_INVALID_OPERATION
;
1887 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
1888 if (!ctx
->Extensions
.ARB_depth_buffer_float
) {
1889 return GL_INVALID_ENUM
;
1891 if (format
!= GL_DEPTH_STENCIL
) {
1892 return GL_INVALID_OPERATION
;
1896 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1897 if (!ctx
->Extensions
.EXT_packed_float
) {
1898 return GL_INVALID_ENUM
;
1900 if (format
!= GL_RGB
) {
1901 return GL_INVALID_OPERATION
;
1905 case GL_HALF_FLOAT_OES
:
1909 case GL_LUMINANCE_ALPHA
:
1915 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_texture_rg
)
1918 return GL_INVALID_OPERATION
;
1922 ; /* fall-through */
1925 /* now, for each format, check the type for compatibility */
1927 case GL_COLOR_INDEX
:
1928 case GL_STENCIL_INDEX
:
1932 case GL_UNSIGNED_BYTE
:
1934 case GL_UNSIGNED_SHORT
:
1936 case GL_UNSIGNED_INT
:
1941 return GL_INVALID_ENUM
;
1948 #if 0 /* not legal! see table 3.6 of the 1.5 spec */
1952 case GL_LUMINANCE_ALPHA
:
1953 case GL_DEPTH_COMPONENT
:
1956 case GL_UNSIGNED_BYTE
:
1958 case GL_UNSIGNED_SHORT
:
1960 case GL_UNSIGNED_INT
:
1965 return GL_INVALID_ENUM
;
1969 if (!ctx
->Extensions
.ARB_texture_rg
)
1970 return GL_INVALID_ENUM
;
1973 case GL_UNSIGNED_BYTE
:
1975 case GL_UNSIGNED_SHORT
:
1977 case GL_UNSIGNED_INT
:
1982 return GL_INVALID_ENUM
;
1988 case GL_UNSIGNED_BYTE
:
1990 case GL_UNSIGNED_SHORT
:
1992 case GL_UNSIGNED_INT
:
1994 case GL_UNSIGNED_BYTE_3_3_2
:
1995 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1996 case GL_UNSIGNED_SHORT_5_6_5
:
1997 case GL_UNSIGNED_SHORT_5_6_5_REV
:
2000 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2001 /* OK by GL_EXT_texture_type_2_10_10_10_REV */
2002 return (ctx
->API
== API_OPENGLES2
)
2003 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2004 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2005 return ctx
->Extensions
.EXT_texture_shared_exponent
2006 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2007 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2008 return ctx
->Extensions
.EXT_packed_float
2009 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2011 return GL_INVALID_ENUM
;
2016 /* NOTE: no packed types are supported with BGR. That's
2017 * intentional, according to the GL spec.
2020 case GL_UNSIGNED_BYTE
:
2022 case GL_UNSIGNED_SHORT
:
2024 case GL_UNSIGNED_INT
:
2029 return GL_INVALID_ENUM
;
2036 case GL_UNSIGNED_BYTE
:
2038 case GL_UNSIGNED_SHORT
:
2040 case GL_UNSIGNED_INT
:
2042 case GL_UNSIGNED_SHORT_4_4_4_4
:
2043 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2044 case GL_UNSIGNED_SHORT_5_5_5_1
:
2045 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2046 case GL_UNSIGNED_INT_8_8_8_8
:
2047 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2048 case GL_UNSIGNED_INT_10_10_10_2
:
2049 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2053 return GL_INVALID_ENUM
;
2059 case GL_UNSIGNED_BYTE
:
2061 case GL_UNSIGNED_SHORT
:
2063 case GL_UNSIGNED_INT
:
2065 case GL_UNSIGNED_SHORT_4_4_4_4
:
2066 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2067 case GL_UNSIGNED_INT_8_8_8_8
:
2068 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2072 return GL_INVALID_ENUM
;
2076 if (!ctx
->Extensions
.MESA_ycbcr_texture
)
2077 return GL_INVALID_ENUM
;
2078 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
||
2079 type
== GL_UNSIGNED_SHORT_8_8_REV_MESA
)
2082 return GL_INVALID_OPERATION
;
2084 case GL_DEPTH_STENCIL
:
2085 if (type
== GL_UNSIGNED_INT_24_8
)
2087 else if (ctx
->Extensions
.ARB_depth_buffer_float
&&
2088 type
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
2091 return GL_INVALID_ENUM
;
2093 /* integer-valued formats */
2094 case GL_RED_INTEGER_EXT
:
2095 case GL_GREEN_INTEGER_EXT
:
2096 case GL_BLUE_INTEGER_EXT
:
2097 case GL_ALPHA_INTEGER_EXT
:
2101 case GL_UNSIGNED_BYTE
:
2103 case GL_UNSIGNED_SHORT
:
2105 case GL_UNSIGNED_INT
:
2106 return (ctx
->Version
>= 30 ||
2107 ctx
->Extensions
.EXT_texture_integer
)
2108 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2110 return GL_INVALID_ENUM
;
2113 case GL_RGB_INTEGER_EXT
:
2116 case GL_UNSIGNED_BYTE
:
2118 case GL_UNSIGNED_SHORT
:
2120 case GL_UNSIGNED_INT
:
2121 return (ctx
->Version
>= 30 ||
2122 ctx
->Extensions
.EXT_texture_integer
)
2123 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2124 case GL_UNSIGNED_BYTE_3_3_2
:
2125 case GL_UNSIGNED_BYTE_2_3_3_REV
:
2126 case GL_UNSIGNED_SHORT_5_6_5
:
2127 case GL_UNSIGNED_SHORT_5_6_5_REV
:
2128 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2129 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2131 return GL_INVALID_ENUM
;
2134 case GL_BGR_INTEGER_EXT
:
2137 case GL_UNSIGNED_BYTE
:
2139 case GL_UNSIGNED_SHORT
:
2141 case GL_UNSIGNED_INT
:
2142 /* NOTE: no packed formats w/ BGR format */
2143 return (ctx
->Version
>= 30 ||
2144 ctx
->Extensions
.EXT_texture_integer
)
2145 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2147 return GL_INVALID_ENUM
;
2150 case GL_RGBA_INTEGER_EXT
:
2151 case GL_BGRA_INTEGER_EXT
:
2154 case GL_UNSIGNED_BYTE
:
2156 case GL_UNSIGNED_SHORT
:
2158 case GL_UNSIGNED_INT
:
2159 return (ctx
->Version
>= 30 ||
2160 ctx
->Extensions
.EXT_texture_integer
)
2161 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2162 case GL_UNSIGNED_SHORT_4_4_4_4
:
2163 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2164 case GL_UNSIGNED_SHORT_5_5_5_1
:
2165 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2166 case GL_UNSIGNED_INT_8_8_8_8
:
2167 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2168 case GL_UNSIGNED_INT_10_10_10_2
:
2169 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2170 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2171 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2173 return GL_INVALID_ENUM
;
2176 case GL_LUMINANCE_INTEGER_EXT
:
2177 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
2180 case GL_UNSIGNED_BYTE
:
2182 case GL_UNSIGNED_SHORT
:
2184 case GL_UNSIGNED_INT
:
2185 return ctx
->Extensions
.EXT_texture_integer
2186 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2188 return GL_INVALID_ENUM
;
2192 return GL_INVALID_ENUM
;
2199 * Do error checking of format/type combinations for OpenGL ES glReadPixels
2200 * and glTex[Sub]Image.
2201 * \return error code, or GL_NO_ERROR.
2204 _mesa_es_error_check_format_and_type(const struct gl_context
*ctx
,
2205 GLenum format
, GLenum type
,
2206 unsigned dimensions
)
2208 GLboolean type_valid
= GL_TRUE
;
2213 if (ctx
->API
== API_OPENGLES
|| !ctx
->Extensions
.ARB_texture_rg
)
2214 return GL_INVALID_VALUE
;
2218 case GL_LUMINANCE_ALPHA
:
2219 type_valid
= (type
== GL_UNSIGNED_BYTE
2221 || type
== GL_HALF_FLOAT_OES
);
2225 type_valid
= (type
== GL_UNSIGNED_BYTE
2226 || type
== GL_UNSIGNED_SHORT_5_6_5
2228 || type
== GL_HALF_FLOAT_OES
);
2232 type_valid
= (type
== GL_UNSIGNED_BYTE
2233 || type
== GL_UNSIGNED_SHORT_4_4_4_4
2234 || type
== GL_UNSIGNED_SHORT_5_5_5_1
2236 || type
== GL_HALF_FLOAT_OES
2237 || type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
2240 case GL_DEPTH_COMPONENT
:
2241 /* This format is filtered against invalid dimensionalities elsewhere.
2243 type_valid
= (type
== GL_UNSIGNED_SHORT
2244 || type
== GL_UNSIGNED_INT
);
2247 case GL_DEPTH_STENCIL
:
2248 /* This format is filtered against invalid dimensionalities elsewhere.
2250 type_valid
= (type
== GL_UNSIGNED_INT_24_8
);
2254 type_valid
= (type
== GL_UNSIGNED_BYTE
);
2256 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
2257 * the format does not appear to be allowed for 3D textures in OpenGL
2260 if (dimensions
!= 2)
2261 return GL_INVALID_VALUE
;
2266 return GL_INVALID_VALUE
;
2269 return type_valid
? GL_NO_ERROR
: GL_INVALID_OPERATION
;
2273 * Return the simple base format for a given internal texture format.
2274 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
2276 * \param ctx GL context.
2277 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
2279 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
2280 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
2282 * This is the format which is used during texture application (i.e. the
2283 * texture format and env mode determine the arithmetic used.
2286 _mesa_base_tex_format(const struct gl_context
*ctx
, GLint internalFormat
)
2288 switch (internalFormat
) {
2294 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_ALPHA
: -1;
2299 case GL_LUMINANCE12
:
2300 case GL_LUMINANCE16
:
2301 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_LUMINANCE
: -1;
2303 case GL_LUMINANCE_ALPHA
:
2304 case GL_LUMINANCE4_ALPHA4
:
2305 case GL_LUMINANCE6_ALPHA2
:
2306 case GL_LUMINANCE8_ALPHA8
:
2307 case GL_LUMINANCE12_ALPHA4
:
2308 case GL_LUMINANCE12_ALPHA12
:
2309 case GL_LUMINANCE16_ALPHA16
:
2310 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_LUMINANCE_ALPHA
: -1;
2314 case GL_INTENSITY12
:
2315 case GL_INTENSITY16
:
2316 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_INTENSITY
: -1;
2318 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_RGB
: -1;
2329 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_RGBA
: -1;
2343 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
2345 if (_mesa_is_gles(ctx
)) {
2346 switch (internalFormat
) {
2354 if (ctx
->Extensions
.ARB_ES2_compatibility
) {
2355 switch (internalFormat
) {
2363 if (ctx
->Extensions
.ARB_depth_texture
) {
2364 switch (internalFormat
) {
2365 case GL_DEPTH_COMPONENT
:
2366 case GL_DEPTH_COMPONENT16
:
2367 case GL_DEPTH_COMPONENT24
:
2368 case GL_DEPTH_COMPONENT32
:
2369 return GL_DEPTH_COMPONENT
;
2370 case GL_DEPTH_STENCIL
:
2371 case GL_DEPTH24_STENCIL8
:
2372 return GL_DEPTH_STENCIL
;
2378 if (ctx
->Extensions
.ARB_texture_stencil8
) {
2379 switch (internalFormat
) {
2380 case GL_STENCIL_INDEX
:
2381 case GL_STENCIL_INDEX1
:
2382 case GL_STENCIL_INDEX4
:
2383 case GL_STENCIL_INDEX8
:
2384 case GL_STENCIL_INDEX16
:
2385 return GL_STENCIL_INDEX
;
2391 switch (internalFormat
) {
2392 case GL_COMPRESSED_ALPHA
:
2394 case GL_COMPRESSED_LUMINANCE
:
2395 return GL_LUMINANCE
;
2396 case GL_COMPRESSED_LUMINANCE_ALPHA
:
2397 return GL_LUMINANCE_ALPHA
;
2398 case GL_COMPRESSED_INTENSITY
:
2399 return GL_INTENSITY
;
2400 case GL_COMPRESSED_RGB
:
2402 case GL_COMPRESSED_RGBA
:
2408 if (_mesa_is_compressed_format(ctx
, internalFormat
)) {
2409 GLenum base_compressed
=
2410 _mesa_gl_compressed_format_base_format(internalFormat
);
2411 if (base_compressed
)
2412 return base_compressed
;
2415 if ((ctx
->Extensions
.KHR_texture_compression_astc_ldr
&&
2416 is_astc_2d_format(internalFormat
)) ||
2417 (ctx
->Extensions
.OES_texture_compression_astc
&&
2418 is_astc_3d_format(internalFormat
)))
2421 if (ctx
->Extensions
.MESA_ycbcr_texture
) {
2422 if (internalFormat
== GL_YCBCR_MESA
)
2423 return GL_YCBCR_MESA
;
2426 if (ctx
->Extensions
.ARB_texture_float
) {
2427 switch (internalFormat
) {
2428 case GL_ALPHA16F_ARB
:
2429 case GL_ALPHA32F_ARB
:
2431 case GL_RGBA16F_ARB
:
2432 case GL_RGBA32F_ARB
:
2437 case GL_INTENSITY16F_ARB
:
2438 case GL_INTENSITY32F_ARB
:
2439 return GL_INTENSITY
;
2440 case GL_LUMINANCE16F_ARB
:
2441 case GL_LUMINANCE32F_ARB
:
2442 return GL_LUMINANCE
;
2443 case GL_LUMINANCE_ALPHA16F_ARB
:
2444 case GL_LUMINANCE_ALPHA32F_ARB
:
2445 return GL_LUMINANCE_ALPHA
;
2451 if (ctx
->Extensions
.EXT_texture_snorm
) {
2452 switch (internalFormat
) {
2463 case GL_RGB16_SNORM
:
2466 case GL_RGBA8_SNORM
:
2467 case GL_RGBA16_SNORM
:
2469 case GL_ALPHA_SNORM
:
2470 case GL_ALPHA8_SNORM
:
2471 case GL_ALPHA16_SNORM
:
2473 case GL_LUMINANCE_SNORM
:
2474 case GL_LUMINANCE8_SNORM
:
2475 case GL_LUMINANCE16_SNORM
:
2476 return GL_LUMINANCE
;
2477 case GL_LUMINANCE_ALPHA_SNORM
:
2478 case GL_LUMINANCE8_ALPHA8_SNORM
:
2479 case GL_LUMINANCE16_ALPHA16_SNORM
:
2480 return GL_LUMINANCE_ALPHA
;
2481 case GL_INTENSITY_SNORM
:
2482 case GL_INTENSITY8_SNORM
:
2483 case GL_INTENSITY16_SNORM
:
2484 return GL_INTENSITY
;
2490 if (ctx
->Extensions
.EXT_texture_sRGB
) {
2491 switch (internalFormat
) {
2494 case GL_COMPRESSED_SRGB_EXT
:
2496 case GL_SRGB_ALPHA_EXT
:
2497 case GL_SRGB8_ALPHA8_EXT
:
2498 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
2500 case GL_SLUMINANCE_ALPHA_EXT
:
2501 case GL_SLUMINANCE8_ALPHA8_EXT
:
2502 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
2503 return GL_LUMINANCE_ALPHA
;
2504 case GL_SLUMINANCE_EXT
:
2505 case GL_SLUMINANCE8_EXT
:
2506 case GL_COMPRESSED_SLUMINANCE_EXT
:
2507 return GL_LUMINANCE
;
2513 if (ctx
->Version
>= 30 ||
2514 ctx
->Extensions
.EXT_texture_integer
) {
2515 switch (internalFormat
) {
2516 case GL_RGBA8UI_EXT
:
2517 case GL_RGBA16UI_EXT
:
2518 case GL_RGBA32UI_EXT
:
2520 case GL_RGBA16I_EXT
:
2521 case GL_RGBA32I_EXT
:
2524 case GL_RGB16UI_EXT
:
2525 case GL_RGB32UI_EXT
:
2533 if (ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
2534 switch (internalFormat
) {
2540 if (ctx
->Extensions
.EXT_texture_integer
) {
2541 switch (internalFormat
) {
2542 case GL_ALPHA8UI_EXT
:
2543 case GL_ALPHA16UI_EXT
:
2544 case GL_ALPHA32UI_EXT
:
2545 case GL_ALPHA8I_EXT
:
2546 case GL_ALPHA16I_EXT
:
2547 case GL_ALPHA32I_EXT
:
2549 case GL_INTENSITY8UI_EXT
:
2550 case GL_INTENSITY16UI_EXT
:
2551 case GL_INTENSITY32UI_EXT
:
2552 case GL_INTENSITY8I_EXT
:
2553 case GL_INTENSITY16I_EXT
:
2554 case GL_INTENSITY32I_EXT
:
2555 return GL_INTENSITY
;
2556 case GL_LUMINANCE8UI_EXT
:
2557 case GL_LUMINANCE16UI_EXT
:
2558 case GL_LUMINANCE32UI_EXT
:
2559 case GL_LUMINANCE8I_EXT
:
2560 case GL_LUMINANCE16I_EXT
:
2561 case GL_LUMINANCE32I_EXT
:
2562 return GL_LUMINANCE
;
2563 case GL_LUMINANCE_ALPHA8UI_EXT
:
2564 case GL_LUMINANCE_ALPHA16UI_EXT
:
2565 case GL_LUMINANCE_ALPHA32UI_EXT
:
2566 case GL_LUMINANCE_ALPHA8I_EXT
:
2567 case GL_LUMINANCE_ALPHA16I_EXT
:
2568 case GL_LUMINANCE_ALPHA32I_EXT
:
2569 return GL_LUMINANCE_ALPHA
;
2575 if (ctx
->Extensions
.ARB_texture_rg
) {
2576 switch (internalFormat
) {
2579 if (!ctx
->Extensions
.ARB_texture_float
)
2588 if (ctx
->Version
< 30 && !ctx
->Extensions
.EXT_texture_integer
)
2594 case GL_COMPRESSED_RED
:
2599 if (!ctx
->Extensions
.ARB_texture_float
)
2608 if (ctx
->Version
< 30 && !ctx
->Extensions
.EXT_texture_integer
)
2614 case GL_COMPRESSED_RG
:
2621 if (ctx
->Extensions
.EXT_texture_shared_exponent
) {
2622 switch (internalFormat
) {
2623 case GL_RGB9_E5_EXT
:
2630 if (ctx
->Extensions
.EXT_packed_float
) {
2631 switch (internalFormat
) {
2632 case GL_R11F_G11F_B10F_EXT
:
2639 if (ctx
->Extensions
.ARB_depth_buffer_float
) {
2640 switch (internalFormat
) {
2641 case GL_DEPTH_COMPONENT32F
:
2642 return GL_DEPTH_COMPONENT
;
2643 case GL_DEPTH32F_STENCIL8
:
2644 return GL_DEPTH_STENCIL
;
2650 return -1; /* error */
2654 * Returns the effective internal format from a texture format and type.
2655 * This is used by texture image operations internally for validation, when
2656 * the specified internal format is a base (unsized) format.
2658 * This method will only return a valid effective internal format if the
2659 * combination of format, type and internal format in base form, is acceptable.
2661 * If a single sized internal format is defined in the spec (OpenGL-ES 3.0.4) or
2662 * in extensions, to unambiguously correspond to the given base format, then
2663 * that internal format is returned as the effective. Otherwise, if the
2664 * combination is accepted but a single effective format is not defined, the
2665 * passed base format will be returned instead.
2667 * \param format the texture format
2668 * \param type the texture type
2671 _mesa_es3_effective_internal_format_for_format_and_type(GLenum format
,
2675 case GL_UNSIGNED_BYTE
:
2685 /* Although LUMINANCE_ALPHA, LUMINANCE and ALPHA appear in table 3.12,
2686 * (section 3.8 Texturing, page 128 of the OpenGL-ES 3.0.4) as effective
2687 * internal formats, they do not correspond to GL constants, so the base
2688 * format is returned instead.
2691 case GL_LUMINANCE_ALPHA
:
2698 case GL_UNSIGNED_SHORT_4_4_4_4
:
2699 if (format
== GL_RGBA
)
2703 case GL_UNSIGNED_SHORT_5_5_5_1
:
2704 if (format
== GL_RGBA
)
2708 case GL_UNSIGNED_SHORT_5_6_5
:
2709 if (format
== GL_RGB
)
2713 /* OES_packed_depth_stencil */
2714 case GL_UNSIGNED_INT_24_8
:
2715 if (format
== GL_DEPTH_STENCIL
)
2716 return GL_DEPTH24_STENCIL8
;
2719 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
2720 if (format
== GL_DEPTH_STENCIL
)
2721 return GL_DEPTH32F_STENCIL8
;
2724 case GL_UNSIGNED_SHORT
:
2725 if (format
== GL_DEPTH_COMPONENT
)
2726 return GL_DEPTH_COMPONENT16
;
2729 case GL_UNSIGNED_INT
:
2730 /* It can be DEPTH_COMPONENT16 or DEPTH_COMPONENT24, so just return
2733 if (format
== GL_DEPTH_COMPONENT
)
2737 /* OES_texture_float and OES_texture_half_float */
2739 if (format
== GL_DEPTH_COMPONENT
)
2740 return GL_DEPTH_COMPONENT32F
;
2742 case GL_HALF_FLOAT_OES
:
2746 case GL_LUMINANCE_ALPHA
:
2762 /* GL_EXT_texture_type_2_10_10_10_REV */
2763 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2772 /* fall through and return NONE */
2780 * Do error checking of format/type combinations for OpenGL ES 3
2782 * \return error code, or GL_NO_ERROR.
2785 _mesa_es3_error_check_format_and_type(const struct gl_context
*ctx
,
2786 GLenum format
, GLenum type
,
2787 GLenum internalFormat
)
2789 /* If internalFormat is an unsized format, then the effective internal
2790 * format derived from format and type should be used instead. Page 127,
2791 * section "3.8 Texturing" of the GLES 3.0.4 spec states:
2793 * "if internalformat is a base internal format, the effective
2794 * internal format is a sized internal format that is derived
2795 * from the format and type for internal use by the GL.
2796 * Table 3.12 specifies the mapping of format and type to effective
2797 * internal formats. The effective internal format is used by the GL
2798 * for purposes such as texture completeness or type checks for
2799 * CopyTex* commands. In these cases, the GL is required to operate
2800 * as if the effective internal format was used as the internalformat
2801 * when specifying the texture data."
2803 if (_mesa_is_enum_format_unsized(internalFormat
)) {
2804 GLenum effectiveInternalFormat
=
2805 _mesa_es3_effective_internal_format_for_format_and_type(format
, type
);
2807 if (effectiveInternalFormat
== GL_NONE
)
2808 return GL_INVALID_OPERATION
;
2810 GLenum baseInternalFormat
;
2811 if (internalFormat
== GL_BGRA_EXT
) {
2812 /* Unfortunately, _mesa_base_tex_format returns a base format of
2813 * GL_RGBA for GL_BGRA_EXT. This makes perfect sense if you're
2814 * asking the question, "what channels does this format have?"
2815 * However, if we're trying to determine if two internal formats
2816 * match in the ES3 sense, we actually want GL_BGRA.
2818 baseInternalFormat
= GL_BGRA_EXT
;
2820 baseInternalFormat
=
2821 _mesa_base_tex_format(ctx
, effectiveInternalFormat
);
2824 if (internalFormat
!= baseInternalFormat
)
2825 return GL_INVALID_OPERATION
;
2827 internalFormat
= effectiveInternalFormat
;
2832 if (type
!= GL_UNSIGNED_BYTE
|| internalFormat
!= GL_BGRA
)
2833 return GL_INVALID_OPERATION
;
2838 case GL_UNSIGNED_BYTE
:
2839 switch (internalFormat
) {
2844 case GL_SRGB8_ALPHA8_EXT
:
2847 return GL_INVALID_OPERATION
;
2852 if (internalFormat
!= GL_RGBA8_SNORM
)
2853 return GL_INVALID_OPERATION
;
2856 case GL_UNSIGNED_SHORT_4_4_4_4
:
2857 switch (internalFormat
) {
2862 return GL_INVALID_OPERATION
;
2866 case GL_UNSIGNED_SHORT_5_5_5_1
:
2867 switch (internalFormat
) {
2872 return GL_INVALID_OPERATION
;
2876 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2877 switch (internalFormat
) {
2878 case GL_RGBA
: /* GL_EXT_texture_type_2_10_10_10_REV */
2883 return GL_INVALID_OPERATION
;
2888 if (internalFormat
!= GL_RGBA16F
)
2889 return GL_INVALID_OPERATION
;
2893 switch (internalFormat
) {
2898 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
2901 return GL_INVALID_OPERATION
;
2905 case GL_HALF_FLOAT_OES
:
2906 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
2909 return GL_INVALID_OPERATION
;
2913 case GL_RGBA_INTEGER
:
2915 case GL_UNSIGNED_BYTE
:
2916 if (internalFormat
!= GL_RGBA8UI
)
2917 return GL_INVALID_OPERATION
;
2921 if (internalFormat
!= GL_RGBA8I
)
2922 return GL_INVALID_OPERATION
;
2925 case GL_UNSIGNED_SHORT
:
2926 if (internalFormat
!= GL_RGBA16UI
)
2927 return GL_INVALID_OPERATION
;
2931 if (internalFormat
!= GL_RGBA16I
)
2932 return GL_INVALID_OPERATION
;
2935 case GL_UNSIGNED_INT
:
2936 if (internalFormat
!= GL_RGBA32UI
)
2937 return GL_INVALID_OPERATION
;
2941 if (internalFormat
!= GL_RGBA32I
)
2942 return GL_INVALID_OPERATION
;
2945 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2946 if (internalFormat
!= GL_RGB10_A2UI
)
2947 return GL_INVALID_OPERATION
;
2951 return GL_INVALID_OPERATION
;
2957 case GL_UNSIGNED_BYTE
:
2958 switch (internalFormat
) {
2965 return GL_INVALID_OPERATION
;
2970 if (internalFormat
!= GL_RGB8_SNORM
)
2971 return GL_INVALID_OPERATION
;
2974 case GL_UNSIGNED_SHORT_5_6_5
:
2975 switch (internalFormat
) {
2980 return GL_INVALID_OPERATION
;
2984 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2985 if (internalFormat
!= GL_R11F_G11F_B10F
)
2986 return GL_INVALID_OPERATION
;
2989 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2990 if (internalFormat
!= GL_RGB9_E5
)
2991 return GL_INVALID_OPERATION
;
2995 switch (internalFormat
) {
2997 case GL_R11F_G11F_B10F
:
3001 return GL_INVALID_OPERATION
;
3006 switch (internalFormat
) {
3009 case GL_R11F_G11F_B10F
:
3013 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
3016 return GL_INVALID_OPERATION
;
3020 case GL_HALF_FLOAT_OES
:
3021 if (!ctx
->Extensions
.OES_texture_half_float
|| internalFormat
!= format
)
3022 return GL_INVALID_OPERATION
;
3025 case GL_UNSIGNED_INT_2_10_10_10_REV
:
3026 switch (internalFormat
) {
3027 case GL_RGB
: /* GL_EXT_texture_type_2_10_10_10_REV */
3030 return GL_INVALID_OPERATION
;
3035 return GL_INVALID_OPERATION
;
3039 case GL_RGB_INTEGER
:
3041 case GL_UNSIGNED_BYTE
:
3042 if (internalFormat
!= GL_RGB8UI
)
3043 return GL_INVALID_OPERATION
;
3047 if (internalFormat
!= GL_RGB8I
)
3048 return GL_INVALID_OPERATION
;
3051 case GL_UNSIGNED_SHORT
:
3052 if (internalFormat
!= GL_RGB16UI
)
3053 return GL_INVALID_OPERATION
;
3057 if (internalFormat
!= GL_RGB16I
)
3058 return GL_INVALID_OPERATION
;
3061 case GL_UNSIGNED_INT
:
3062 if (internalFormat
!= GL_RGB32UI
)
3063 return GL_INVALID_OPERATION
;
3067 if (internalFormat
!= GL_RGB32I
)
3068 return GL_INVALID_OPERATION
;
3072 return GL_INVALID_OPERATION
;
3078 case GL_UNSIGNED_BYTE
:
3079 if (internalFormat
!= GL_RG8
)
3080 return GL_INVALID_OPERATION
;
3084 if (internalFormat
!= GL_RG8_SNORM
)
3085 return GL_INVALID_OPERATION
;
3089 case GL_HALF_FLOAT_OES
:
3090 switch (internalFormat
) {
3094 if (ctx
->Extensions
.ARB_texture_rg
&&
3095 ctx
->Extensions
.OES_texture_half_float
)
3099 return GL_INVALID_OPERATION
;
3104 switch (internalFormat
) {
3109 if (ctx
->Extensions
.ARB_texture_rg
&&
3110 ctx
->Extensions
.OES_texture_float
)
3114 return GL_INVALID_OPERATION
;
3119 return GL_INVALID_OPERATION
;
3125 case GL_UNSIGNED_BYTE
:
3126 if (internalFormat
!= GL_RG8UI
)
3127 return GL_INVALID_OPERATION
;
3131 if (internalFormat
!= GL_RG8I
)
3132 return GL_INVALID_OPERATION
;
3135 case GL_UNSIGNED_SHORT
:
3136 if (internalFormat
!= GL_RG16UI
)
3137 return GL_INVALID_OPERATION
;
3141 if (internalFormat
!= GL_RG16I
)
3142 return GL_INVALID_OPERATION
;
3145 case GL_UNSIGNED_INT
:
3146 if (internalFormat
!= GL_RG32UI
)
3147 return GL_INVALID_OPERATION
;
3151 if (internalFormat
!= GL_RG32I
)
3152 return GL_INVALID_OPERATION
;
3156 return GL_INVALID_OPERATION
;
3162 case GL_UNSIGNED_BYTE
:
3163 if (internalFormat
!= GL_R8
)
3164 return GL_INVALID_OPERATION
;
3168 if (internalFormat
!= GL_R8_SNORM
)
3169 return GL_INVALID_OPERATION
;
3173 case GL_HALF_FLOAT_OES
:
3174 switch (internalFormat
) {
3179 if (ctx
->Extensions
.ARB_texture_rg
&&
3180 ctx
->Extensions
.OES_texture_half_float
)
3184 return GL_INVALID_OPERATION
;
3189 switch (internalFormat
) {
3194 if (ctx
->Extensions
.ARB_texture_rg
&&
3195 ctx
->Extensions
.OES_texture_float
)
3199 return GL_INVALID_OPERATION
;
3204 return GL_INVALID_OPERATION
;
3208 case GL_RED_INTEGER
:
3210 case GL_UNSIGNED_BYTE
:
3211 if (internalFormat
!= GL_R8UI
)
3212 return GL_INVALID_OPERATION
;
3216 if (internalFormat
!= GL_R8I
)
3217 return GL_INVALID_OPERATION
;
3220 case GL_UNSIGNED_SHORT
:
3221 if (internalFormat
!= GL_R16UI
)
3222 return GL_INVALID_OPERATION
;
3226 if (internalFormat
!= GL_R16I
)
3227 return GL_INVALID_OPERATION
;
3230 case GL_UNSIGNED_INT
:
3231 if (internalFormat
!= GL_R32UI
)
3232 return GL_INVALID_OPERATION
;
3236 if (internalFormat
!= GL_R32I
)
3237 return GL_INVALID_OPERATION
;
3241 return GL_INVALID_OPERATION
;
3245 case GL_DEPTH_COMPONENT
:
3247 case GL_UNSIGNED_SHORT
:
3248 if (internalFormat
!= GL_DEPTH_COMPONENT
3249 && internalFormat
!= GL_DEPTH_COMPONENT16
)
3250 return GL_INVALID_OPERATION
;
3253 case GL_UNSIGNED_INT
:
3254 switch (internalFormat
) {
3255 case GL_DEPTH_COMPONENT
:
3256 case GL_DEPTH_COMPONENT16
:
3257 case GL_DEPTH_COMPONENT24
:
3260 return GL_INVALID_OPERATION
;
3265 if (internalFormat
!= GL_DEPTH_COMPONENT32F
)
3266 return GL_INVALID_OPERATION
;
3270 return GL_INVALID_OPERATION
;
3274 case GL_DEPTH_STENCIL
:
3276 case GL_UNSIGNED_INT_24_8
:
3277 if (internalFormat
!= GL_DEPTH_STENCIL
3278 && internalFormat
!= GL_DEPTH24_STENCIL8
)
3279 return GL_INVALID_OPERATION
;
3282 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
3283 if (internalFormat
!= GL_DEPTH32F_STENCIL8
)
3284 return GL_INVALID_OPERATION
;
3288 return GL_INVALID_OPERATION
;
3292 case GL_STENCIL_INDEX
:
3293 if (!_mesa_has_OES_texture_stencil8(ctx
) ||
3294 type
!= GL_UNSIGNED_BYTE
||
3295 internalFormat
!= GL_STENCIL_INDEX8
) {
3296 return GL_INVALID_OPERATION
;
3302 case GL_LUMINANCE_ALPHA
:
3305 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
3307 case GL_HALF_FLOAT_OES
:
3308 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
3311 if (type
!= GL_UNSIGNED_BYTE
|| format
!= internalFormat
)
3312 return GL_INVALID_OPERATION
;
3320 set_swizzle(uint8_t *swizzle
, int x
, int y
, int z
, int w
)
3322 swizzle
[MESA_FORMAT_SWIZZLE_X
] = x
;
3323 swizzle
[MESA_FORMAT_SWIZZLE_Y
] = y
;
3324 swizzle
[MESA_FORMAT_SWIZZLE_Z
] = z
;
3325 swizzle
[MESA_FORMAT_SWIZZLE_W
] = w
;
3329 get_swizzle_from_gl_format(GLenum format
, uint8_t *swizzle
)
3333 case GL_RGBA_INTEGER_EXT
:
3334 set_swizzle(swizzle
, 0, 1, 2, 3);
3337 case GL_BGRA_INTEGER_EXT
:
3338 set_swizzle(swizzle
, 2, 1, 0, 3);
3341 set_swizzle(swizzle
, 3, 2, 1, 0);
3344 case GL_RGB_INTEGER_EXT
:
3345 set_swizzle(swizzle
, 0, 1, 2, 5);
3348 case GL_BGR_INTEGER_EXT
:
3349 set_swizzle(swizzle
, 2, 1, 0, 5);
3351 case GL_LUMINANCE_ALPHA
:
3352 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
3353 set_swizzle(swizzle
, 0, 0, 0, 1);
3357 set_swizzle(swizzle
, 0, 1, 4, 5);
3360 case GL_RED_INTEGER_EXT
:
3361 set_swizzle(swizzle
, 0, 4, 4, 5);
3364 case GL_GREEN_INTEGER_EXT
:
3365 set_swizzle(swizzle
, 4, 0, 4, 5);
3368 case GL_BLUE_INTEGER_EXT
:
3369 set_swizzle(swizzle
, 4, 4, 0, 5);
3372 case GL_ALPHA_INTEGER_EXT
:
3373 set_swizzle(swizzle
, 4, 4, 4, 0);
3376 case GL_LUMINANCE_INTEGER_EXT
:
3377 set_swizzle(swizzle
, 0, 0, 0, 5);
3380 set_swizzle(swizzle
, 0, 0, 0, 0);
3388 * Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
3389 * GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
3390 * otherwise (for non-array formats).
3392 * This function will typically be used to compute a mesa format from a GL type
3393 * so we can then call _mesa_format_convert. This function does
3394 * not consider byte swapping, so it returns types assuming that no byte
3395 * swapping is involved. If byte swapping is involved then clients are supposed
3396 * to handle that on their side before calling _mesa_format_convert.
3398 * This function returns an uint32_t that can pack a mesa_format or a
3399 * mesa_array_format. Clients must check the mesa array format bit
3400 * (MESA_ARRAY_FORMAT_BIT) on the return value to know if the returned
3401 * format is a mesa_array_format or a mesa_format.
3404 _mesa_format_from_format_and_type(GLenum format
, GLenum type
)
3406 bool is_array_format
= true;
3408 bool normalized
= false, is_float
= false, is_signed
= false;
3409 int num_channels
= 0, type_size
= 0;
3411 /* Extract array format type information from the OpenGL data type */
3413 case GL_UNSIGNED_BYTE
:
3420 case GL_UNSIGNED_SHORT
:
3427 case GL_UNSIGNED_INT
:
3435 case GL_HALF_FLOAT_OES
:
3446 is_array_format
= false;
3450 /* Extract array format swizzle information from the OpenGL format */
3451 if (is_array_format
)
3452 is_array_format
= get_swizzle_from_gl_format(format
, swizzle
);
3454 /* If this is an array format type after checking data type and format,
3455 * create the array format
3457 if (is_array_format
) {
3458 normalized
= !_mesa_is_enum_format_integer(format
);
3459 num_channels
= _mesa_components_in_format(format
);
3461 return MESA_ARRAY_FORMAT(type_size
, is_signed
, is_float
,
3462 normalized
, num_channels
,
3463 swizzle
[0], swizzle
[1], swizzle
[2], swizzle
[3]);
3466 /* Otherwise this is not an array format, so return the mesa_format
3467 * matching the OpenGL format and data type
3470 case GL_UNSIGNED_SHORT_5_6_5
:
3471 if (format
== GL_RGB
)
3472 return MESA_FORMAT_B5G6R5_UNORM
;
3473 else if (format
== GL_BGR
)
3474 return MESA_FORMAT_R5G6B5_UNORM
;
3475 else if (format
== GL_RGB_INTEGER
)
3476 return MESA_FORMAT_B5G6R5_UINT
;
3478 case GL_UNSIGNED_SHORT_5_6_5_REV
:
3479 if (format
== GL_RGB
)
3480 return MESA_FORMAT_R5G6B5_UNORM
;
3481 else if (format
== GL_BGR
)
3482 return MESA_FORMAT_B5G6R5_UNORM
;
3483 else if (format
== GL_RGB_INTEGER
)
3484 return MESA_FORMAT_R5G6B5_UINT
;
3486 case GL_UNSIGNED_SHORT_4_4_4_4
:
3487 if (format
== GL_RGBA
)
3488 return MESA_FORMAT_A4B4G4R4_UNORM
;
3489 else if (format
== GL_BGRA
)
3490 return MESA_FORMAT_A4R4G4B4_UNORM
;
3491 else if (format
== GL_ABGR_EXT
)
3492 return MESA_FORMAT_R4G4B4A4_UNORM
;
3493 else if (format
== GL_RGBA_INTEGER
)
3494 return MESA_FORMAT_A4B4G4R4_UINT
;
3495 else if (format
== GL_BGRA_INTEGER
)
3496 return MESA_FORMAT_A4R4G4B4_UINT
;
3498 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
3499 if (format
== GL_RGBA
)
3500 return MESA_FORMAT_R4G4B4A4_UNORM
;
3501 else if (format
== GL_BGRA
)
3502 return MESA_FORMAT_B4G4R4A4_UNORM
;
3503 else if (format
== GL_ABGR_EXT
)
3504 return MESA_FORMAT_A4B4G4R4_UNORM
;
3505 else if (format
== GL_RGBA_INTEGER
)
3506 return MESA_FORMAT_R4G4B4A4_UINT
;
3507 else if (format
== GL_BGRA_INTEGER
)
3508 return MESA_FORMAT_B4G4R4A4_UINT
;
3510 case GL_UNSIGNED_SHORT_5_5_5_1
:
3511 if (format
== GL_RGBA
)
3512 return MESA_FORMAT_A1B5G5R5_UNORM
;
3513 else if (format
== GL_BGRA
)
3514 return MESA_FORMAT_A1R5G5B5_UNORM
;
3515 else if (format
== GL_RGBA_INTEGER
)
3516 return MESA_FORMAT_A1B5G5R5_UINT
;
3517 else if (format
== GL_BGRA_INTEGER
)
3518 return MESA_FORMAT_A1R5G5B5_UINT
;
3520 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
3521 if (format
== GL_RGBA
)
3522 return MESA_FORMAT_R5G5B5A1_UNORM
;
3523 else if (format
== GL_BGRA
)
3524 return MESA_FORMAT_B5G5R5A1_UNORM
;
3525 else if (format
== GL_RGBA_INTEGER
)
3526 return MESA_FORMAT_R5G5B5A1_UINT
;
3527 else if (format
== GL_BGRA_INTEGER
)
3528 return MESA_FORMAT_B5G5R5A1_UINT
;
3530 case GL_UNSIGNED_BYTE_3_3_2
:
3531 if (format
== GL_RGB
)
3532 return MESA_FORMAT_B2G3R3_UNORM
;
3533 else if (format
== GL_RGB_INTEGER
)
3534 return MESA_FORMAT_B2G3R3_UINT
;
3536 case GL_UNSIGNED_BYTE_2_3_3_REV
:
3537 if (format
== GL_RGB
)
3538 return MESA_FORMAT_R3G3B2_UNORM
;
3539 else if (format
== GL_RGB_INTEGER
)
3540 return MESA_FORMAT_R3G3B2_UINT
;
3542 case GL_UNSIGNED_INT_5_9_9_9_REV
:
3543 if (format
== GL_RGB
)
3544 return MESA_FORMAT_R9G9B9E5_FLOAT
;
3546 case GL_UNSIGNED_INT_10_10_10_2
:
3547 if (format
== GL_RGBA
)
3548 return MESA_FORMAT_A2B10G10R10_UNORM
;
3549 else if (format
== GL_RGBA_INTEGER
)
3550 return MESA_FORMAT_A2B10G10R10_UINT
;
3551 else if (format
== GL_BGRA
)
3552 return MESA_FORMAT_A2R10G10B10_UNORM
;
3553 else if (format
== GL_BGRA_INTEGER
)
3554 return MESA_FORMAT_A2R10G10B10_UINT
;
3556 case GL_UNSIGNED_INT_2_10_10_10_REV
:
3557 if (format
== GL_RGB
)
3558 return MESA_FORMAT_R10G10B10X2_UNORM
;
3559 if (format
== GL_RGBA
)
3560 return MESA_FORMAT_R10G10B10A2_UNORM
;
3561 else if (format
== GL_RGBA_INTEGER
)
3562 return MESA_FORMAT_R10G10B10A2_UINT
;
3563 else if (format
== GL_BGRA
)
3564 return MESA_FORMAT_B10G10R10A2_UNORM
;
3565 else if (format
== GL_BGRA_INTEGER
)
3566 return MESA_FORMAT_B10G10R10A2_UINT
;
3568 case GL_UNSIGNED_INT_8_8_8_8
:
3569 if (format
== GL_RGBA
)
3570 return MESA_FORMAT_A8B8G8R8_UNORM
;
3571 else if (format
== GL_BGRA
)
3572 return MESA_FORMAT_A8R8G8B8_UNORM
;
3573 else if (format
== GL_ABGR_EXT
)
3574 return MESA_FORMAT_R8G8B8A8_UNORM
;
3575 else if (format
== GL_RGBA_INTEGER
)
3576 return MESA_FORMAT_A8B8G8R8_UINT
;
3577 else if (format
== GL_BGRA_INTEGER
)
3578 return MESA_FORMAT_A8R8G8B8_UINT
;
3580 case GL_UNSIGNED_INT_8_8_8_8_REV
:
3581 if (format
== GL_RGBA
)
3582 return MESA_FORMAT_R8G8B8A8_UNORM
;
3583 else if (format
== GL_BGRA
)
3584 return MESA_FORMAT_B8G8R8A8_UNORM
;
3585 else if (format
== GL_ABGR_EXT
)
3586 return MESA_FORMAT_A8B8G8R8_UNORM
;
3587 else if (format
== GL_RGBA_INTEGER
)
3588 return MESA_FORMAT_R8G8B8A8_UINT
;
3589 else if (format
== GL_BGRA_INTEGER
)
3590 return MESA_FORMAT_B8G8R8A8_UINT
;
3592 case GL_UNSIGNED_SHORT_8_8_MESA
:
3593 if (format
== GL_YCBCR_MESA
)
3594 return MESA_FORMAT_YCBCR
;
3596 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
3597 if (format
== GL_YCBCR_MESA
)
3598 return MESA_FORMAT_YCBCR_REV
;
3600 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
3601 if (format
== GL_RGB
)
3602 return MESA_FORMAT_R11G11B10_FLOAT
;
3605 if (format
== GL_DEPTH_COMPONENT
)
3606 return MESA_FORMAT_Z_FLOAT32
;
3608 case GL_UNSIGNED_INT
:
3609 if (format
== GL_DEPTH_COMPONENT
)
3610 return MESA_FORMAT_Z_UNORM32
;
3612 case GL_UNSIGNED_SHORT
:
3613 if (format
== GL_DEPTH_COMPONENT
)
3614 return MESA_FORMAT_Z_UNORM16
;
3616 case GL_UNSIGNED_INT_24_8
:
3617 if (format
== GL_DEPTH_STENCIL
)
3618 return MESA_FORMAT_Z24_UNORM_S8_UINT
;
3620 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
3621 if (format
== GL_DEPTH_STENCIL
)
3622 return MESA_FORMAT_Z32_FLOAT_S8X24_UINT
;
3628 /* If we got here it means that we could not find a Mesa format that
3629 * matches the GL format/type provided. We may need to add a new Mesa
3630 * format in that case.
3632 unreachable("Unsupported format");
3636 * Returns true if \p internal_format is a sized internal format that
3637 * is marked "Color Renderable" in Table 8.10 of the ES 3.2 specification.
3640 _mesa_is_es3_color_renderable(GLenum internal_format
)
3642 switch (internal_format
) {
3652 case GL_SRGB8_ALPHA8
:
3659 case GL_R11F_G11F_B10F
:
3685 * Returns true if \p internal_format is a sized internal format that
3686 * is marked "Texture Filterable" in Table 8.10 of the ES 3.2 specification.
3689 _mesa_is_es3_texture_filterable(const struct gl_context
*ctx
,
3690 GLenum internal_format
)
3692 switch (internal_format
) {
3703 case GL_RGBA8_SNORM
:
3706 case GL_SRGB8_ALPHA8
:
3711 case GL_R11F_G11F_B10F
:
3718 /* The OES_texture_float_linear spec says:
3720 * "When implemented against OpenGL ES 3.0 or later versions, sized
3721 * 32-bit floating-point formats become texture-filterable. This
3722 * should be noted by, for example, checking the ``TF'' column of
3723 * table 8.13 in the ES 3.1 Specification (``Correspondence of sized
3724 * internal formats to base internal formats ... and use cases ...'')
3725 * for the R32F, RG32F, RGB32F, and RGBA32F formats."
3727 return ctx
->Extensions
.OES_texture_float_linear
;