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 return comps
* sizeof(GLhalfARB
);
551 return comps
* sizeof(GLdouble
);
553 return comps
* sizeof(GLfixed
);
554 case GL_INT_2_10_10_10_REV
:
555 case GL_UNSIGNED_INT_2_10_10_10_REV
:
557 return sizeof(GLuint
);
560 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
562 return sizeof(GLuint
);
571 * Test if the given format is unsized.
574 _mesa_is_enum_format_unsized(GLenum format
)
589 case GL_LUMINANCE_ALPHA
:
594 case GL_SLUMINANCE_ALPHA
:
601 case GL_INTENSITY_SNORM
:
602 case GL_LUMINANCE_SNORM
:
603 case GL_LUMINANCE_ALPHA_SNORM
:
606 case GL_GREEN_INTEGER
:
607 case GL_BLUE_INTEGER
:
608 case GL_ALPHA_INTEGER
:
610 case GL_RGBA_INTEGER
:
612 case GL_BGRA_INTEGER
:
614 case GL_LUMINANCE_INTEGER_EXT
:
615 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
617 case GL_DEPTH_COMPONENT
:
618 case GL_DEPTH_STENCIL
:
619 case GL_STENCIL_INDEX
:
627 * Test if the given format is a UNORM (unsigned-normalized) format.
630 _mesa_is_enum_format_unorm(GLenum format
)
649 case GL_LUMINANCE_ALPHA
:
650 case GL_SLUMINANCE_ALPHA
:
651 case GL_LUMINANCE4_ALPHA4
:
652 case GL_LUMINANCE6_ALPHA2
:
653 case GL_LUMINANCE8_ALPHA8
:
654 case GL_LUMINANCE12_ALPHA4
:
655 case GL_LUMINANCE12_ALPHA12
:
656 case GL_LUMINANCE16_ALPHA16
:
698 * Test if the given format is a SNORM (signed-normalized) format.
701 _mesa_is_enum_format_snorm(GLenum format
)
704 /* signed, normalized texture formats */
716 case GL_RGBA16_SNORM
:
718 case GL_ALPHA8_SNORM
:
719 case GL_ALPHA16_SNORM
:
720 case GL_LUMINANCE_SNORM
:
721 case GL_LUMINANCE8_SNORM
:
722 case GL_LUMINANCE16_SNORM
:
723 case GL_LUMINANCE_ALPHA_SNORM
:
724 case GL_LUMINANCE8_ALPHA8_SNORM
:
725 case GL_LUMINANCE16_ALPHA16_SNORM
:
726 case GL_INTENSITY_SNORM
:
727 case GL_INTENSITY8_SNORM
:
728 case GL_INTENSITY16_SNORM
:
736 * Test if the given format is an integer (non-normalized) format.
739 _mesa_is_enum_format_unsigned_int(GLenum format
)
742 /* specific integer formats */
743 case GL_RGBA32UI_EXT
:
747 case GL_ALPHA32UI_EXT
:
748 case GL_INTENSITY32UI_EXT
:
749 case GL_LUMINANCE32UI_EXT
:
750 case GL_LUMINANCE_ALPHA32UI_EXT
:
751 case GL_RGBA16UI_EXT
:
755 case GL_ALPHA16UI_EXT
:
756 case GL_INTENSITY16UI_EXT
:
757 case GL_LUMINANCE16UI_EXT
:
758 case GL_LUMINANCE_ALPHA16UI_EXT
:
763 case GL_ALPHA8UI_EXT
:
764 case GL_INTENSITY8UI_EXT
:
765 case GL_LUMINANCE8UI_EXT
:
766 case GL_LUMINANCE_ALPHA8UI_EXT
:
776 * Test if the given format is an integer (non-normalized) format.
779 _mesa_is_enum_format_signed_int(GLenum format
)
782 /* generic integer formats */
783 case GL_RED_INTEGER_EXT
:
784 case GL_GREEN_INTEGER_EXT
:
785 case GL_BLUE_INTEGER_EXT
:
786 case GL_ALPHA_INTEGER_EXT
:
787 case GL_RGB_INTEGER_EXT
:
788 case GL_RGBA_INTEGER_EXT
:
789 case GL_BGR_INTEGER_EXT
:
790 case GL_BGRA_INTEGER_EXT
:
791 case GL_LUMINANCE_INTEGER_EXT
:
792 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
794 /* specific integer formats */
799 case GL_ALPHA32I_EXT
:
800 case GL_INTENSITY32I_EXT
:
801 case GL_LUMINANCE32I_EXT
:
802 case GL_LUMINANCE_ALPHA32I_EXT
:
807 case GL_ALPHA16I_EXT
:
808 case GL_INTENSITY16I_EXT
:
809 case GL_LUMINANCE16I_EXT
:
810 case GL_LUMINANCE_ALPHA16I_EXT
:
816 case GL_INTENSITY8I_EXT
:
817 case GL_LUMINANCE8I_EXT
:
818 case GL_LUMINANCE_ALPHA8I_EXT
:
826 * Test if the given format is an ASTC 2D format.
829 is_astc_2d_format(GLenum internalFormat
)
831 switch (internalFormat
) {
832 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
833 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
834 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
835 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
836 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
837 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
838 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
839 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
840 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
841 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
842 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
843 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
844 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
845 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
846 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
847 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
848 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
849 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
850 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
851 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
852 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
853 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
854 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
855 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
856 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
857 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
858 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
859 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
867 * Test if the given format is an ASTC 3D format.
870 is_astc_3d_format(GLenum internalFormat
)
872 switch (internalFormat
) {
873 case GL_COMPRESSED_RGBA_ASTC_3x3x3_OES
:
874 case GL_COMPRESSED_RGBA_ASTC_4x3x3_OES
:
875 case GL_COMPRESSED_RGBA_ASTC_4x4x3_OES
:
876 case GL_COMPRESSED_RGBA_ASTC_4x4x4_OES
:
877 case GL_COMPRESSED_RGBA_ASTC_5x4x4_OES
:
878 case GL_COMPRESSED_RGBA_ASTC_5x5x4_OES
:
879 case GL_COMPRESSED_RGBA_ASTC_5x5x5_OES
:
880 case GL_COMPRESSED_RGBA_ASTC_6x5x5_OES
:
881 case GL_COMPRESSED_RGBA_ASTC_6x6x5_OES
:
882 case GL_COMPRESSED_RGBA_ASTC_6x6x6_OES
:
883 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES
:
884 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES
:
885 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES
:
886 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES
:
887 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES
:
888 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES
:
889 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES
:
890 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES
:
891 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES
:
892 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES
:
900 * Test if the given format is an ASTC format.
903 _mesa_is_astc_format(GLenum internalFormat
)
905 return is_astc_2d_format(internalFormat
) ||
906 is_astc_3d_format(internalFormat
);
910 * Test if the given format is an ETC2 format.
913 _mesa_is_etc2_format(GLenum internalFormat
)
915 switch (internalFormat
) {
916 case GL_COMPRESSED_RGB8_ETC2
:
917 case GL_COMPRESSED_SRGB8_ETC2
:
918 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
919 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
920 case GL_COMPRESSED_R11_EAC
:
921 case GL_COMPRESSED_RG11_EAC
:
922 case GL_COMPRESSED_SIGNED_R11_EAC
:
923 case GL_COMPRESSED_SIGNED_RG11_EAC
:
924 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
925 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
933 * Test if the given format is an integer (non-normalized) format.
936 _mesa_is_enum_format_integer(GLenum format
)
938 return _mesa_is_enum_format_unsigned_int(format
) ||
939 _mesa_is_enum_format_signed_int(format
);
944 _mesa_is_type_unsigned(GLenum type
)
947 case GL_UNSIGNED_INT
:
948 case GL_UNSIGNED_INT_8_8_8_8
:
949 case GL_UNSIGNED_INT_8_8_8_8_REV
:
950 case GL_UNSIGNED_INT_10_10_10_2
:
951 case GL_UNSIGNED_INT_2_10_10_10_REV
:
953 case GL_UNSIGNED_SHORT
:
954 case GL_UNSIGNED_SHORT_4_4_4_4
:
955 case GL_UNSIGNED_SHORT_5_5_5_1
:
956 case GL_UNSIGNED_SHORT_5_6_5
:
957 case GL_UNSIGNED_SHORT_5_6_5_REV
:
958 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
959 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
960 case GL_UNSIGNED_SHORT_8_8_MESA
:
961 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
963 case GL_UNSIGNED_BYTE
:
964 case GL_UNSIGNED_BYTE_3_3_2
:
965 case GL_UNSIGNED_BYTE_2_3_3_REV
:
975 * Test if the given image format is a color/RGBA format (i.e., not color
976 * index, depth, stencil, etc).
977 * \param format the image format value (may by an internal texture format)
978 * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
981 _mesa_is_color_format(GLenum format
)
999 case GL_LUMINANCE_ALPHA
:
1000 case GL_LUMINANCE4_ALPHA4
:
1001 case GL_LUMINANCE6_ALPHA2
:
1002 case GL_LUMINANCE8_ALPHA8
:
1003 case GL_LUMINANCE12_ALPHA4
:
1004 case GL_LUMINANCE12_ALPHA12
:
1005 case GL_LUMINANCE16_ALPHA16
:
1009 case GL_INTENSITY12
:
1010 case GL_INTENSITY16
:
1038 /* float texture formats */
1039 case GL_ALPHA16F_ARB
:
1040 case GL_ALPHA32F_ARB
:
1041 case GL_LUMINANCE16F_ARB
:
1042 case GL_LUMINANCE32F_ARB
:
1043 case GL_LUMINANCE_ALPHA16F_ARB
:
1044 case GL_LUMINANCE_ALPHA32F_ARB
:
1045 case GL_INTENSITY16F_ARB
:
1046 case GL_INTENSITY32F_ARB
:
1053 case GL_RGBA16F_ARB
:
1054 case GL_RGBA32F_ARB
:
1055 /* compressed formats */
1056 case GL_COMPRESSED_ALPHA
:
1057 case GL_COMPRESSED_LUMINANCE
:
1058 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1059 case GL_COMPRESSED_INTENSITY
:
1060 case GL_COMPRESSED_RED
:
1061 case GL_COMPRESSED_RG
:
1062 case GL_COMPRESSED_RGB
:
1063 case GL_COMPRESSED_RGBA
:
1068 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
1069 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
1070 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
1071 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
1072 case GL_COMPRESSED_RGB_FXT1_3DFX
:
1073 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
1076 case GL_SRGB_ALPHA_EXT
:
1077 case GL_SRGB8_ALPHA8_EXT
:
1078 case GL_SLUMINANCE_ALPHA_EXT
:
1079 case GL_SLUMINANCE8_ALPHA8_EXT
:
1080 case GL_SLUMINANCE_EXT
:
1081 case GL_SLUMINANCE8_EXT
:
1082 case GL_COMPRESSED_SRGB_EXT
:
1083 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1084 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
1085 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1086 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1087 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1088 case GL_COMPRESSED_SLUMINANCE_EXT
:
1089 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
1090 case GL_COMPRESSED_RED_RGTC1
:
1091 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
1092 case GL_COMPRESSED_RG_RGTC2
:
1093 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
1094 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
1095 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
1096 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
1097 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
1098 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1099 case GL_ETC1_RGB8_OES
:
1100 case GL_COMPRESSED_RGB8_ETC2
:
1101 case GL_COMPRESSED_SRGB8_ETC2
:
1102 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
1103 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1104 case GL_COMPRESSED_R11_EAC
:
1105 case GL_COMPRESSED_RG11_EAC
:
1106 case GL_COMPRESSED_SIGNED_R11_EAC
:
1107 case GL_COMPRESSED_SIGNED_RG11_EAC
:
1108 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1109 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1110 case GL_COMPRESSED_RGBA_BPTC_UNORM
:
1111 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1112 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT
:
1113 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT
:
1114 case GL_COMPRESSED_RGBA_ASTC_4x4_KHR
:
1115 case GL_COMPRESSED_RGBA_ASTC_5x4_KHR
:
1116 case GL_COMPRESSED_RGBA_ASTC_5x5_KHR
:
1117 case GL_COMPRESSED_RGBA_ASTC_6x5_KHR
:
1118 case GL_COMPRESSED_RGBA_ASTC_6x6_KHR
:
1119 case GL_COMPRESSED_RGBA_ASTC_8x5_KHR
:
1120 case GL_COMPRESSED_RGBA_ASTC_8x6_KHR
:
1121 case GL_COMPRESSED_RGBA_ASTC_8x8_KHR
:
1122 case GL_COMPRESSED_RGBA_ASTC_10x5_KHR
:
1123 case GL_COMPRESSED_RGBA_ASTC_10x6_KHR
:
1124 case GL_COMPRESSED_RGBA_ASTC_10x8_KHR
:
1125 case GL_COMPRESSED_RGBA_ASTC_10x10_KHR
:
1126 case GL_COMPRESSED_RGBA_ASTC_12x10_KHR
:
1127 case GL_COMPRESSED_RGBA_ASTC_12x12_KHR
:
1128 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
1129 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
1130 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
1131 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
1132 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
1133 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
1134 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
1135 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
1136 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
1137 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
1138 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
1139 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
1140 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
1141 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
1142 /* generic integer formats */
1143 case GL_RED_INTEGER_EXT
:
1144 case GL_GREEN_INTEGER_EXT
:
1145 case GL_BLUE_INTEGER_EXT
:
1146 case GL_ALPHA_INTEGER_EXT
:
1147 case GL_RGB_INTEGER_EXT
:
1148 case GL_RGBA_INTEGER_EXT
:
1149 case GL_BGR_INTEGER_EXT
:
1150 case GL_BGRA_INTEGER_EXT
:
1152 case GL_LUMINANCE_INTEGER_EXT
:
1153 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1154 /* sized integer formats */
1155 case GL_RGBA32UI_EXT
:
1156 case GL_RGB32UI_EXT
:
1159 case GL_ALPHA32UI_EXT
:
1160 case GL_INTENSITY32UI_EXT
:
1161 case GL_LUMINANCE32UI_EXT
:
1162 case GL_LUMINANCE_ALPHA32UI_EXT
:
1163 case GL_RGBA16UI_EXT
:
1164 case GL_RGB16UI_EXT
:
1167 case GL_ALPHA16UI_EXT
:
1168 case GL_INTENSITY16UI_EXT
:
1169 case GL_LUMINANCE16UI_EXT
:
1170 case GL_LUMINANCE_ALPHA16UI_EXT
:
1171 case GL_RGBA8UI_EXT
:
1175 case GL_ALPHA8UI_EXT
:
1176 case GL_INTENSITY8UI_EXT
:
1177 case GL_LUMINANCE8UI_EXT
:
1178 case GL_LUMINANCE_ALPHA8UI_EXT
:
1179 case GL_RGBA32I_EXT
:
1183 case GL_ALPHA32I_EXT
:
1184 case GL_INTENSITY32I_EXT
:
1185 case GL_LUMINANCE32I_EXT
:
1186 case GL_LUMINANCE_ALPHA32I_EXT
:
1187 case GL_RGBA16I_EXT
:
1191 case GL_ALPHA16I_EXT
:
1192 case GL_INTENSITY16I_EXT
:
1193 case GL_LUMINANCE16I_EXT
:
1194 case GL_LUMINANCE_ALPHA16I_EXT
:
1199 case GL_ALPHA8I_EXT
:
1200 case GL_INTENSITY8I_EXT
:
1201 case GL_LUMINANCE8I_EXT
:
1202 case GL_LUMINANCE_ALPHA8I_EXT
:
1203 /* signed, normalized texture formats */
1212 case GL_RGB16_SNORM
:
1214 case GL_RGBA8_SNORM
:
1215 case GL_RGBA16_SNORM
:
1216 case GL_ALPHA_SNORM
:
1217 case GL_ALPHA8_SNORM
:
1218 case GL_ALPHA16_SNORM
:
1219 case GL_LUMINANCE_SNORM
:
1220 case GL_LUMINANCE8_SNORM
:
1221 case GL_LUMINANCE16_SNORM
:
1222 case GL_LUMINANCE_ALPHA_SNORM
:
1223 case GL_LUMINANCE8_ALPHA8_SNORM
:
1224 case GL_LUMINANCE16_ALPHA16_SNORM
:
1225 case GL_INTENSITY_SNORM
:
1226 case GL_INTENSITY8_SNORM
:
1227 case GL_INTENSITY16_SNORM
:
1229 case GL_R11F_G11F_B10F
:
1232 case GL_YCBCR_MESA
: /* not considered to be RGB */
1241 * Test if the given image format is a depth component format.
1244 _mesa_is_depth_format(GLenum format
)
1247 case GL_DEPTH_COMPONENT
:
1248 case GL_DEPTH_COMPONENT16
:
1249 case GL_DEPTH_COMPONENT24
:
1250 case GL_DEPTH_COMPONENT32
:
1251 case GL_DEPTH_COMPONENT32F
:
1260 * Test if the given image format is a stencil format.
1263 _mesa_is_stencil_format(GLenum format
)
1266 case GL_STENCIL_INDEX
:
1275 * Test if the given image format is a YCbCr format.
1278 _mesa_is_ycbcr_format(GLenum format
)
1290 * Test if the given image format is a depth+stencil format.
1293 _mesa_is_depthstencil_format(GLenum format
)
1296 case GL_DEPTH24_STENCIL8_EXT
:
1297 case GL_DEPTH_STENCIL_EXT
:
1298 case GL_DEPTH32F_STENCIL8
:
1307 * Test if the given image format is a depth or stencil format.
1310 _mesa_is_depth_or_stencil_format(GLenum format
)
1313 case GL_DEPTH_COMPONENT
:
1314 case GL_DEPTH_COMPONENT16
:
1315 case GL_DEPTH_COMPONENT24
:
1316 case GL_DEPTH_COMPONENT32
:
1317 case GL_STENCIL_INDEX
:
1318 case GL_STENCIL_INDEX1_EXT
:
1319 case GL_STENCIL_INDEX4_EXT
:
1320 case GL_STENCIL_INDEX8_EXT
:
1321 case GL_STENCIL_INDEX16_EXT
:
1322 case GL_DEPTH_STENCIL_EXT
:
1323 case GL_DEPTH24_STENCIL8_EXT
:
1324 case GL_DEPTH_COMPONENT32F
:
1325 case GL_DEPTH32F_STENCIL8
:
1334 * Test if an image format is a supported compressed format.
1335 * \param format the internal format token provided by the user.
1336 * \return GL_TRUE if compressed, GL_FALSE if uncompressed
1339 _mesa_is_compressed_format(const struct gl_context
*ctx
, GLenum format
)
1341 mesa_format m_format
= _mesa_glenum_to_compressed_format(format
);
1343 /* Some formats in this switch have an equivalent mesa_format_layout
1344 * to the compressed formats in the layout switch below and thus
1345 * must be handled first.
1352 return _mesa_is_desktop_gl(ctx
) &&
1353 ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1354 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
1355 return ctx
->API
== API_OPENGL_COMPAT
1356 && ctx
->Extensions
.ATI_texture_compression_3dc
;
1357 case GL_PALETTE4_RGB8_OES
:
1358 case GL_PALETTE4_RGBA8_OES
:
1359 case GL_PALETTE4_R5_G6_B5_OES
:
1360 case GL_PALETTE4_RGBA4_OES
:
1361 case GL_PALETTE4_RGB5_A1_OES
:
1362 case GL_PALETTE8_RGB8_OES
:
1363 case GL_PALETTE8_RGBA8_OES
:
1364 case GL_PALETTE8_R5_G6_B5_OES
:
1365 case GL_PALETTE8_RGBA4_OES
:
1366 case GL_PALETTE8_RGB5_A1_OES
:
1367 return ctx
->API
== API_OPENGLES
;
1370 switch (_mesa_get_format_layout(m_format
)) {
1371 case MESA_FORMAT_LAYOUT_S3TC
:
1372 if (_mesa_get_format_color_encoding(m_format
) == GL_LINEAR
) {
1373 /* Assume that the ANGLE flag will always be set if the
1376 return ctx
->Extensions
.ANGLE_texture_compression_dxt
;
1378 return _mesa_is_desktop_gl(ctx
)
1379 && ctx
->Extensions
.EXT_texture_sRGB
1380 && ctx
->Extensions
.EXT_texture_compression_s3tc
;
1382 case MESA_FORMAT_LAYOUT_FXT1
:
1383 return _mesa_is_desktop_gl(ctx
)
1384 && ctx
->Extensions
.TDFX_texture_compression_FXT1
;
1385 case MESA_FORMAT_LAYOUT_RGTC
:
1386 return _mesa_is_desktop_gl(ctx
)
1387 && ctx
->Extensions
.ARB_texture_compression_rgtc
;
1388 case MESA_FORMAT_LAYOUT_LATC
:
1389 return ctx
->API
== API_OPENGL_COMPAT
1390 && ctx
->Extensions
.EXT_texture_compression_latc
;
1391 case MESA_FORMAT_LAYOUT_ETC1
:
1392 return _mesa_is_gles(ctx
)
1393 && ctx
->Extensions
.OES_compressed_ETC1_RGB8_texture
;
1394 case MESA_FORMAT_LAYOUT_ETC2
:
1395 return _mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
;
1396 case MESA_FORMAT_LAYOUT_BPTC
:
1397 return _mesa_is_desktop_gl(ctx
) &&
1398 ctx
->Extensions
.ARB_texture_compression_bptc
;
1399 case MESA_FORMAT_LAYOUT_ASTC
:
1400 return ctx
->Extensions
.KHR_texture_compression_astc_ldr
;
1407 * Test if the given format represents an sRGB format.
1408 * \param format the GL format (can be an internal format)
1409 * \return GL_TRUE if format is sRGB, GL_FALSE otherwise
1412 _mesa_is_srgb_format(GLenum format
)
1418 case GL_SRGB8_ALPHA8
:
1419 case GL_COMPRESSED_SRGB
:
1420 case GL_COMPRESSED_SRGB_ALPHA
:
1421 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
1422 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
1423 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
1424 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
1425 case GL_COMPRESSED_SRGB8_ETC2
:
1426 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
1427 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
1428 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
1429 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
:
1430 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
:
1431 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
:
1432 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
:
1433 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
:
1434 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
:
1435 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
:
1436 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
:
1437 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
:
1438 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
:
1439 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR
:
1440 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
:
1441 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
:
1442 case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
:
1452 * Convert various unpack formats to the corresponding base format.
1455 _mesa_unpack_format_to_base_format(GLenum format
)
1458 case GL_RED_INTEGER
:
1460 case GL_GREEN_INTEGER
:
1462 case GL_BLUE_INTEGER
:
1464 case GL_ALPHA_INTEGER
:
1468 case GL_RGB_INTEGER
:
1470 case GL_RGBA_INTEGER
:
1472 case GL_BGR_INTEGER
:
1474 case GL_BGRA_INTEGER
:
1476 case GL_LUMINANCE_INTEGER_EXT
:
1477 return GL_LUMINANCE
;
1478 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1479 return GL_LUMINANCE_ALPHA
;
1490 case GL_LUMINANCE_ALPHA
:
1497 * Convert various base formats to the corresponding integer format.
1500 _mesa_base_format_to_integer_format(GLenum format
)
1504 return GL_RED_INTEGER
;
1506 return GL_GREEN_INTEGER
;
1508 return GL_BLUE_INTEGER
;
1510 return GL_RG_INTEGER
;
1512 return GL_RGB_INTEGER
;
1514 return GL_RGBA_INTEGER
;
1516 return GL_BGR_INTEGER
;
1518 return GL_BGRA_INTEGER
;
1520 return GL_ALPHA_INTEGER
;
1522 return GL_LUMINANCE_INTEGER_EXT
;
1523 case GL_LUMINANCE_ALPHA
:
1524 return GL_LUMINANCE_ALPHA_INTEGER_EXT
;
1532 * Does the given base texture/renderbuffer format have the channel
1536 _mesa_base_format_has_channel(GLenum base_format
, GLenum pname
)
1539 case GL_TEXTURE_RED_SIZE
:
1540 case GL_TEXTURE_RED_TYPE
:
1541 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1542 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1543 case GL_INTERNALFORMAT_RED_SIZE
:
1544 case GL_INTERNALFORMAT_RED_TYPE
:
1545 if (base_format
== GL_RED
||
1546 base_format
== GL_RG
||
1547 base_format
== GL_RGB
||
1548 base_format
== GL_RGBA
) {
1552 case GL_TEXTURE_GREEN_SIZE
:
1553 case GL_TEXTURE_GREEN_TYPE
:
1554 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1555 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1556 case GL_INTERNALFORMAT_GREEN_SIZE
:
1557 case GL_INTERNALFORMAT_GREEN_TYPE
:
1558 if (base_format
== GL_RG
||
1559 base_format
== GL_RGB
||
1560 base_format
== GL_RGBA
) {
1564 case GL_TEXTURE_BLUE_SIZE
:
1565 case GL_TEXTURE_BLUE_TYPE
:
1566 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1567 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1568 case GL_INTERNALFORMAT_BLUE_SIZE
:
1569 case GL_INTERNALFORMAT_BLUE_TYPE
:
1570 if (base_format
== GL_RGB
||
1571 base_format
== GL_RGBA
) {
1575 case GL_TEXTURE_ALPHA_SIZE
:
1576 case GL_TEXTURE_ALPHA_TYPE
:
1577 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1578 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1579 case GL_INTERNALFORMAT_ALPHA_SIZE
:
1580 case GL_INTERNALFORMAT_ALPHA_TYPE
:
1581 if (base_format
== GL_RGBA
||
1582 base_format
== GL_ALPHA
||
1583 base_format
== GL_LUMINANCE_ALPHA
) {
1587 case GL_TEXTURE_LUMINANCE_SIZE
:
1588 case GL_TEXTURE_LUMINANCE_TYPE
:
1589 if (base_format
== GL_LUMINANCE
||
1590 base_format
== GL_LUMINANCE_ALPHA
) {
1594 case GL_TEXTURE_INTENSITY_SIZE
:
1595 case GL_TEXTURE_INTENSITY_TYPE
:
1596 if (base_format
== GL_INTENSITY
) {
1600 case GL_TEXTURE_DEPTH_SIZE
:
1601 case GL_TEXTURE_DEPTH_TYPE
:
1602 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1603 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1604 case GL_INTERNALFORMAT_DEPTH_SIZE
:
1605 case GL_INTERNALFORMAT_DEPTH_TYPE
:
1606 if (base_format
== GL_DEPTH_STENCIL
||
1607 base_format
== GL_DEPTH_COMPONENT
) {
1611 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1612 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1613 case GL_INTERNALFORMAT_STENCIL_SIZE
:
1614 case GL_INTERNALFORMAT_STENCIL_TYPE
:
1615 if (base_format
== GL_DEPTH_STENCIL
||
1616 base_format
== GL_STENCIL_INDEX
) {
1621 _mesa_warning(NULL
, "%s: Unexpected channel token 0x%x\n",
1631 * Returns the number of channels/components for a base format.
1634 _mesa_base_format_component_count(GLenum base_format
)
1636 switch (base_format
) {
1641 case GL_DEPTH_COMPONENT
:
1644 case GL_LUMINANCE_ALPHA
:
1645 case GL_DEPTH_STENCIL
:
1658 * If format is a generic compressed format, return the corresponding
1659 * non-compressed format. For other formats, return the format as-is.
1662 _mesa_generic_compressed_format_to_uncompressed_format(GLenum format
)
1665 case GL_COMPRESSED_RED
:
1667 case GL_COMPRESSED_RG
:
1669 case GL_COMPRESSED_RGB
:
1671 case GL_COMPRESSED_RGBA
:
1673 case GL_COMPRESSED_ALPHA
:
1675 case GL_COMPRESSED_LUMINANCE
:
1676 return GL_LUMINANCE
;
1677 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1678 return GL_LUMINANCE_ALPHA
;
1679 case GL_COMPRESSED_INTENSITY
:
1680 return GL_INTENSITY
;
1682 case GL_COMPRESSED_SRGB
:
1684 case GL_COMPRESSED_SRGB_ALPHA
:
1685 return GL_SRGB_ALPHA
;
1686 case GL_COMPRESSED_SLUMINANCE
:
1687 return GL_SLUMINANCE
;
1688 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
1689 return GL_SLUMINANCE_ALPHA
;
1697 * Return the equivalent non-generic internal format.
1698 * This is useful for comparing whether two internal formats are equivalent.
1701 _mesa_get_nongeneric_internalformat(GLenum format
)
1704 /* GL 1.1 formats. */
1712 case GL_LUMINANCE_ALPHA
:
1713 return GL_LUMINANCE8_ALPHA8
;
1716 return GL_LUMINANCE8
;
1720 return GL_INTENSITY8
;
1722 /* GL_ARB_texture_rg */
1728 /* GL_EXT_texture_sRGB */
1732 return GL_SRGB8_ALPHA8
;
1734 return GL_SLUMINANCE8
;
1735 case GL_SLUMINANCE_ALPHA
:
1736 return GL_SLUMINANCE8_ALPHA8
;
1738 /* GL_EXT_texture_snorm */
1740 return GL_RGBA8_SNORM
;
1742 return GL_RGB8_SNORM
;
1744 return GL_RG8_SNORM
;
1747 case GL_LUMINANCE_ALPHA_SNORM
:
1748 return GL_LUMINANCE8_ALPHA8_SNORM
;
1749 case GL_LUMINANCE_SNORM
:
1750 return GL_LUMINANCE8_SNORM
;
1751 case GL_ALPHA_SNORM
:
1752 return GL_ALPHA8_SNORM
;
1753 case GL_INTENSITY_SNORM
:
1754 return GL_INTENSITY8_SNORM
;
1763 * Convert an sRGB internal format to linear.
1766 _mesa_get_linear_internalformat(GLenum format
)
1775 case GL_SRGB8_ALPHA8
:
1777 case GL_SLUMINANCE8
:
1778 return GL_LUMINANCE8
;
1780 return GL_LUMINANCE
;
1781 case GL_SLUMINANCE_ALPHA
:
1782 return GL_LUMINANCE_ALPHA
;
1783 case GL_SLUMINANCE8_ALPHA8
:
1784 return GL_LUMINANCE8_ALPHA8
;
1792 * Do error checking of format/type combinations for glReadPixels,
1793 * glDrawPixels and glTex[Sub]Image. Note that depending on the format
1794 * and type values, we may either generate GL_INVALID_OPERATION or
1797 * \param format pixel format.
1798 * \param type pixel type.
1800 * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
1803 _mesa_error_check_format_and_type(const struct gl_context
*ctx
,
1804 GLenum format
, GLenum type
)
1806 /* From OpenGL 3.3 spec, page 220:
1807 * "If the format is DEPTH_STENCIL, then values are taken from
1808 * both the depth buffer and the stencil buffer. If there is no
1809 * depth buffer or if there is no stencil buffer, then the error
1810 * INVALID_OPERATION occurs. If the type parameter is not
1811 * UNSIGNED_INT_24_8 or FLOAT_32_UNSIGNED_INT_24_8_REV, then the
1812 * error INVALID_ENUM occurs."
1814 * OpenGL ES still generates GL_INVALID_OPERATION because glReadPixels
1815 * cannot be used to read depth or stencil in that API.
1817 if (_mesa_is_desktop_gl(ctx
) && format
== GL_DEPTH_STENCIL
1818 && type
!= GL_UNSIGNED_INT_24_8
1819 && type
!= GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
1820 return GL_INVALID_ENUM
;
1822 /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
1825 if (format
!= GL_COLOR_INDEX
&& format
!= GL_STENCIL_INDEX
) {
1826 return GL_INVALID_ENUM
;
1830 case GL_UNSIGNED_BYTE_3_3_2
:
1831 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1832 case GL_UNSIGNED_SHORT_5_6_5
:
1833 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1834 if (format
== GL_RGB
) {
1837 if (format
== GL_RGB_INTEGER_EXT
&&
1838 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1841 return GL_INVALID_OPERATION
;
1843 case GL_UNSIGNED_SHORT_4_4_4_4
:
1844 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1845 case GL_UNSIGNED_INT_8_8_8_8
:
1846 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1847 if (format
== GL_RGBA
||
1848 format
== GL_BGRA
||
1849 format
== GL_ABGR_EXT
) {
1852 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1853 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1856 return GL_INVALID_OPERATION
;
1858 case GL_UNSIGNED_SHORT_5_5_5_1
:
1859 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1860 case GL_UNSIGNED_INT_10_10_10_2
:
1861 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1862 if (format
== GL_RGBA
||
1863 format
== GL_BGRA
) {
1866 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1867 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1870 if (type
== GL_UNSIGNED_INT_2_10_10_10_REV
&& format
== GL_RGB
&&
1871 ctx
->API
== API_OPENGLES2
) {
1872 break; /* OK by GL_EXT_texture_type_2_10_10_10_REV */
1874 return GL_INVALID_OPERATION
;
1876 case GL_UNSIGNED_INT_24_8
:
1877 /* Depth buffer OK to read in OpenGL ES (NV_read_depth). */
1878 if (ctx
->API
== API_OPENGLES2
&& format
== GL_DEPTH_COMPONENT
)
1881 if (format
!= GL_DEPTH_STENCIL
) {
1882 return GL_INVALID_OPERATION
;
1886 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
1887 if (!ctx
->Extensions
.ARB_depth_buffer_float
) {
1888 return GL_INVALID_ENUM
;
1890 if (format
!= GL_DEPTH_STENCIL
) {
1891 return GL_INVALID_OPERATION
;
1895 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1896 if (!ctx
->Extensions
.EXT_packed_float
) {
1897 return GL_INVALID_ENUM
;
1899 if (format
!= GL_RGB
) {
1900 return GL_INVALID_OPERATION
;
1904 case GL_HALF_FLOAT_OES
:
1908 case GL_LUMINANCE_ALPHA
:
1914 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_texture_rg
)
1917 return GL_INVALID_OPERATION
;
1921 ; /* fall-through */
1924 /* now, for each format, check the type for compatibility */
1926 case GL_COLOR_INDEX
:
1927 case GL_STENCIL_INDEX
:
1931 case GL_UNSIGNED_BYTE
:
1933 case GL_UNSIGNED_SHORT
:
1935 case GL_UNSIGNED_INT
:
1940 return GL_INVALID_ENUM
;
1947 #if 0 /* not legal! see table 3.6 of the 1.5 spec */
1951 case GL_LUMINANCE_ALPHA
:
1952 case GL_DEPTH_COMPONENT
:
1955 case GL_UNSIGNED_BYTE
:
1957 case GL_UNSIGNED_SHORT
:
1959 case GL_UNSIGNED_INT
:
1964 return GL_INVALID_ENUM
;
1968 if (!ctx
->Extensions
.ARB_texture_rg
)
1969 return GL_INVALID_ENUM
;
1972 case GL_UNSIGNED_BYTE
:
1974 case GL_UNSIGNED_SHORT
:
1976 case GL_UNSIGNED_INT
:
1981 return GL_INVALID_ENUM
;
1987 case GL_UNSIGNED_BYTE
:
1989 case GL_UNSIGNED_SHORT
:
1991 case GL_UNSIGNED_INT
:
1993 case GL_UNSIGNED_BYTE_3_3_2
:
1994 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1995 case GL_UNSIGNED_SHORT_5_6_5
:
1996 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1999 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2000 /* OK by GL_EXT_texture_type_2_10_10_10_REV */
2001 return (ctx
->API
== API_OPENGLES2
)
2002 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2003 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2004 return ctx
->Extensions
.EXT_texture_shared_exponent
2005 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2006 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2007 return ctx
->Extensions
.EXT_packed_float
2008 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2010 return GL_INVALID_ENUM
;
2015 /* NOTE: no packed types are supported with BGR. That's
2016 * intentional, according to the GL spec.
2019 case GL_UNSIGNED_BYTE
:
2021 case GL_UNSIGNED_SHORT
:
2023 case GL_UNSIGNED_INT
:
2028 return GL_INVALID_ENUM
;
2035 case GL_UNSIGNED_BYTE
:
2037 case GL_UNSIGNED_SHORT
:
2039 case GL_UNSIGNED_INT
:
2041 case GL_UNSIGNED_SHORT_4_4_4_4
:
2042 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2043 case GL_UNSIGNED_SHORT_5_5_5_1
:
2044 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2045 case GL_UNSIGNED_INT_8_8_8_8
:
2046 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2047 case GL_UNSIGNED_INT_10_10_10_2
:
2048 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2052 return GL_INVALID_ENUM
;
2058 case GL_UNSIGNED_BYTE
:
2060 case GL_UNSIGNED_SHORT
:
2062 case GL_UNSIGNED_INT
:
2064 case GL_UNSIGNED_SHORT_4_4_4_4
:
2065 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2066 case GL_UNSIGNED_INT_8_8_8_8
:
2067 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2071 return GL_INVALID_ENUM
;
2075 if (!ctx
->Extensions
.MESA_ycbcr_texture
)
2076 return GL_INVALID_ENUM
;
2077 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
||
2078 type
== GL_UNSIGNED_SHORT_8_8_REV_MESA
)
2081 return GL_INVALID_OPERATION
;
2083 case GL_DEPTH_STENCIL
:
2084 if (type
== GL_UNSIGNED_INT_24_8
)
2086 else if (ctx
->Extensions
.ARB_depth_buffer_float
&&
2087 type
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
2090 return GL_INVALID_ENUM
;
2092 /* integer-valued formats */
2093 case GL_RED_INTEGER_EXT
:
2094 case GL_GREEN_INTEGER_EXT
:
2095 case GL_BLUE_INTEGER_EXT
:
2096 case GL_ALPHA_INTEGER_EXT
:
2100 case GL_UNSIGNED_BYTE
:
2102 case GL_UNSIGNED_SHORT
:
2104 case GL_UNSIGNED_INT
:
2105 return (ctx
->Version
>= 30 ||
2106 ctx
->Extensions
.EXT_texture_integer
)
2107 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2109 return GL_INVALID_ENUM
;
2112 case GL_RGB_INTEGER_EXT
:
2115 case GL_UNSIGNED_BYTE
:
2117 case GL_UNSIGNED_SHORT
:
2119 case GL_UNSIGNED_INT
:
2120 return (ctx
->Version
>= 30 ||
2121 ctx
->Extensions
.EXT_texture_integer
)
2122 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2123 case GL_UNSIGNED_BYTE_3_3_2
:
2124 case GL_UNSIGNED_BYTE_2_3_3_REV
:
2125 case GL_UNSIGNED_SHORT_5_6_5
:
2126 case GL_UNSIGNED_SHORT_5_6_5_REV
:
2127 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2128 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2130 return GL_INVALID_ENUM
;
2133 case GL_BGR_INTEGER_EXT
:
2136 case GL_UNSIGNED_BYTE
:
2138 case GL_UNSIGNED_SHORT
:
2140 case GL_UNSIGNED_INT
:
2141 /* NOTE: no packed formats w/ BGR format */
2142 return (ctx
->Version
>= 30 ||
2143 ctx
->Extensions
.EXT_texture_integer
)
2144 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2146 return GL_INVALID_ENUM
;
2149 case GL_RGBA_INTEGER_EXT
:
2150 case GL_BGRA_INTEGER_EXT
:
2153 case GL_UNSIGNED_BYTE
:
2155 case GL_UNSIGNED_SHORT
:
2157 case GL_UNSIGNED_INT
:
2158 return (ctx
->Version
>= 30 ||
2159 ctx
->Extensions
.EXT_texture_integer
)
2160 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2161 case GL_UNSIGNED_SHORT_4_4_4_4
:
2162 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
2163 case GL_UNSIGNED_SHORT_5_5_5_1
:
2164 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
2165 case GL_UNSIGNED_INT_8_8_8_8
:
2166 case GL_UNSIGNED_INT_8_8_8_8_REV
:
2167 case GL_UNSIGNED_INT_10_10_10_2
:
2168 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2169 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
2170 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2172 return GL_INVALID_ENUM
;
2175 case GL_LUMINANCE_INTEGER_EXT
:
2176 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
2179 case GL_UNSIGNED_BYTE
:
2181 case GL_UNSIGNED_SHORT
:
2183 case GL_UNSIGNED_INT
:
2184 return ctx
->Extensions
.EXT_texture_integer
2185 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
2187 return GL_INVALID_ENUM
;
2191 return GL_INVALID_ENUM
;
2198 * Do error checking of format/type combinations for OpenGL ES glReadPixels
2199 * and glTex[Sub]Image.
2200 * \return error code, or GL_NO_ERROR.
2203 _mesa_es_error_check_format_and_type(const struct gl_context
*ctx
,
2204 GLenum format
, GLenum type
,
2205 unsigned dimensions
)
2207 GLboolean type_valid
= GL_TRUE
;
2212 if (ctx
->API
== API_OPENGLES
|| !ctx
->Extensions
.ARB_texture_rg
)
2213 return GL_INVALID_VALUE
;
2217 case GL_LUMINANCE_ALPHA
:
2218 type_valid
= (type
== GL_UNSIGNED_BYTE
2220 || type
== GL_HALF_FLOAT_OES
);
2224 type_valid
= (type
== GL_UNSIGNED_BYTE
2225 || type
== GL_UNSIGNED_SHORT_5_6_5
2227 || type
== GL_HALF_FLOAT_OES
);
2231 type_valid
= (type
== GL_UNSIGNED_BYTE
2232 || type
== GL_UNSIGNED_SHORT_4_4_4_4
2233 || type
== GL_UNSIGNED_SHORT_5_5_5_1
2235 || type
== GL_HALF_FLOAT_OES
2236 || type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
2239 case GL_DEPTH_COMPONENT
:
2240 /* This format is filtered against invalid dimensionalities elsewhere.
2242 type_valid
= (type
== GL_UNSIGNED_SHORT
2243 || type
== GL_UNSIGNED_INT
);
2246 case GL_DEPTH_STENCIL
:
2247 /* This format is filtered against invalid dimensionalities elsewhere.
2249 type_valid
= (type
== GL_UNSIGNED_INT_24_8
);
2253 type_valid
= (type
== GL_UNSIGNED_BYTE
);
2255 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
2256 * the format does not appear to be allowed for 3D textures in OpenGL
2259 if (dimensions
!= 2)
2260 return GL_INVALID_VALUE
;
2265 return GL_INVALID_VALUE
;
2268 return type_valid
? GL_NO_ERROR
: GL_INVALID_OPERATION
;
2272 * Return the simple base format for a given internal texture format.
2273 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
2275 * \param ctx GL context.
2276 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
2278 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
2279 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
2281 * This is the format which is used during texture application (i.e. the
2282 * texture format and env mode determine the arithmetic used.
2285 _mesa_base_tex_format(const struct gl_context
*ctx
, GLint internalFormat
)
2287 switch (internalFormat
) {
2293 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_ALPHA
: -1;
2298 case GL_LUMINANCE12
:
2299 case GL_LUMINANCE16
:
2300 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_LUMINANCE
: -1;
2302 case GL_LUMINANCE_ALPHA
:
2303 case GL_LUMINANCE4_ALPHA4
:
2304 case GL_LUMINANCE6_ALPHA2
:
2305 case GL_LUMINANCE8_ALPHA8
:
2306 case GL_LUMINANCE12_ALPHA4
:
2307 case GL_LUMINANCE12_ALPHA12
:
2308 case GL_LUMINANCE16_ALPHA16
:
2309 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_LUMINANCE_ALPHA
: -1;
2313 case GL_INTENSITY12
:
2314 case GL_INTENSITY16
:
2315 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_INTENSITY
: -1;
2317 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_RGB
: -1;
2328 return (ctx
->API
!= API_OPENGL_CORE
) ? GL_RGBA
: -1;
2342 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
2344 if (_mesa_is_gles(ctx
)) {
2345 switch (internalFormat
) {
2353 if (ctx
->Extensions
.ARB_ES2_compatibility
) {
2354 switch (internalFormat
) {
2362 if (ctx
->Extensions
.ARB_depth_texture
) {
2363 switch (internalFormat
) {
2364 case GL_DEPTH_COMPONENT
:
2365 case GL_DEPTH_COMPONENT16
:
2366 case GL_DEPTH_COMPONENT24
:
2367 case GL_DEPTH_COMPONENT32
:
2368 return GL_DEPTH_COMPONENT
;
2369 case GL_DEPTH_STENCIL
:
2370 case GL_DEPTH24_STENCIL8
:
2371 return GL_DEPTH_STENCIL
;
2377 if (ctx
->Extensions
.ARB_texture_stencil8
) {
2378 switch (internalFormat
) {
2379 case GL_STENCIL_INDEX
:
2380 case GL_STENCIL_INDEX1
:
2381 case GL_STENCIL_INDEX4
:
2382 case GL_STENCIL_INDEX8
:
2383 case GL_STENCIL_INDEX16
:
2384 return GL_STENCIL_INDEX
;
2390 switch (internalFormat
) {
2391 case GL_COMPRESSED_ALPHA
:
2393 case GL_COMPRESSED_LUMINANCE
:
2394 return GL_LUMINANCE
;
2395 case GL_COMPRESSED_LUMINANCE_ALPHA
:
2396 return GL_LUMINANCE_ALPHA
;
2397 case GL_COMPRESSED_INTENSITY
:
2398 return GL_INTENSITY
;
2399 case GL_COMPRESSED_RGB
:
2401 case GL_COMPRESSED_RGBA
:
2407 if (_mesa_is_compressed_format(ctx
, internalFormat
)) {
2408 GLenum base_compressed
=
2409 _mesa_gl_compressed_format_base_format(internalFormat
);
2410 if (base_compressed
)
2411 return base_compressed
;
2414 if ((ctx
->Extensions
.KHR_texture_compression_astc_ldr
&&
2415 is_astc_2d_format(internalFormat
)) ||
2416 (ctx
->Extensions
.OES_texture_compression_astc
&&
2417 is_astc_3d_format(internalFormat
)))
2420 if (ctx
->Extensions
.MESA_ycbcr_texture
) {
2421 if (internalFormat
== GL_YCBCR_MESA
)
2422 return GL_YCBCR_MESA
;
2425 if (ctx
->Extensions
.ARB_texture_float
) {
2426 switch (internalFormat
) {
2427 case GL_ALPHA16F_ARB
:
2428 case GL_ALPHA32F_ARB
:
2430 case GL_RGBA16F_ARB
:
2431 case GL_RGBA32F_ARB
:
2436 case GL_INTENSITY16F_ARB
:
2437 case GL_INTENSITY32F_ARB
:
2438 return GL_INTENSITY
;
2439 case GL_LUMINANCE16F_ARB
:
2440 case GL_LUMINANCE32F_ARB
:
2441 return GL_LUMINANCE
;
2442 case GL_LUMINANCE_ALPHA16F_ARB
:
2443 case GL_LUMINANCE_ALPHA32F_ARB
:
2444 return GL_LUMINANCE_ALPHA
;
2450 if (ctx
->Extensions
.EXT_texture_snorm
) {
2451 switch (internalFormat
) {
2462 case GL_RGB16_SNORM
:
2465 case GL_RGBA8_SNORM
:
2466 case GL_RGBA16_SNORM
:
2468 case GL_ALPHA_SNORM
:
2469 case GL_ALPHA8_SNORM
:
2470 case GL_ALPHA16_SNORM
:
2472 case GL_LUMINANCE_SNORM
:
2473 case GL_LUMINANCE8_SNORM
:
2474 case GL_LUMINANCE16_SNORM
:
2475 return GL_LUMINANCE
;
2476 case GL_LUMINANCE_ALPHA_SNORM
:
2477 case GL_LUMINANCE8_ALPHA8_SNORM
:
2478 case GL_LUMINANCE16_ALPHA16_SNORM
:
2479 return GL_LUMINANCE_ALPHA
;
2480 case GL_INTENSITY_SNORM
:
2481 case GL_INTENSITY8_SNORM
:
2482 case GL_INTENSITY16_SNORM
:
2483 return GL_INTENSITY
;
2489 if (ctx
->Extensions
.EXT_texture_sRGB
) {
2490 switch (internalFormat
) {
2493 case GL_COMPRESSED_SRGB_EXT
:
2495 case GL_SRGB_ALPHA_EXT
:
2496 case GL_SRGB8_ALPHA8_EXT
:
2497 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
2499 case GL_SLUMINANCE_ALPHA_EXT
:
2500 case GL_SLUMINANCE8_ALPHA8_EXT
:
2501 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
2502 return GL_LUMINANCE_ALPHA
;
2503 case GL_SLUMINANCE_EXT
:
2504 case GL_SLUMINANCE8_EXT
:
2505 case GL_COMPRESSED_SLUMINANCE_EXT
:
2506 return GL_LUMINANCE
;
2512 if (ctx
->Version
>= 30 ||
2513 ctx
->Extensions
.EXT_texture_integer
) {
2514 switch (internalFormat
) {
2515 case GL_RGBA8UI_EXT
:
2516 case GL_RGBA16UI_EXT
:
2517 case GL_RGBA32UI_EXT
:
2519 case GL_RGBA16I_EXT
:
2520 case GL_RGBA32I_EXT
:
2523 case GL_RGB16UI_EXT
:
2524 case GL_RGB32UI_EXT
:
2532 if (ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
2533 switch (internalFormat
) {
2539 if (ctx
->Extensions
.EXT_texture_integer
) {
2540 switch (internalFormat
) {
2541 case GL_ALPHA8UI_EXT
:
2542 case GL_ALPHA16UI_EXT
:
2543 case GL_ALPHA32UI_EXT
:
2544 case GL_ALPHA8I_EXT
:
2545 case GL_ALPHA16I_EXT
:
2546 case GL_ALPHA32I_EXT
:
2548 case GL_INTENSITY8UI_EXT
:
2549 case GL_INTENSITY16UI_EXT
:
2550 case GL_INTENSITY32UI_EXT
:
2551 case GL_INTENSITY8I_EXT
:
2552 case GL_INTENSITY16I_EXT
:
2553 case GL_INTENSITY32I_EXT
:
2554 return GL_INTENSITY
;
2555 case GL_LUMINANCE8UI_EXT
:
2556 case GL_LUMINANCE16UI_EXT
:
2557 case GL_LUMINANCE32UI_EXT
:
2558 case GL_LUMINANCE8I_EXT
:
2559 case GL_LUMINANCE16I_EXT
:
2560 case GL_LUMINANCE32I_EXT
:
2561 return GL_LUMINANCE
;
2562 case GL_LUMINANCE_ALPHA8UI_EXT
:
2563 case GL_LUMINANCE_ALPHA16UI_EXT
:
2564 case GL_LUMINANCE_ALPHA32UI_EXT
:
2565 case GL_LUMINANCE_ALPHA8I_EXT
:
2566 case GL_LUMINANCE_ALPHA16I_EXT
:
2567 case GL_LUMINANCE_ALPHA32I_EXT
:
2568 return GL_LUMINANCE_ALPHA
;
2574 if (ctx
->Extensions
.ARB_texture_rg
) {
2575 switch (internalFormat
) {
2578 if (!ctx
->Extensions
.ARB_texture_float
)
2587 if (ctx
->Version
< 30 && !ctx
->Extensions
.EXT_texture_integer
)
2593 case GL_COMPRESSED_RED
:
2598 if (!ctx
->Extensions
.ARB_texture_float
)
2607 if (ctx
->Version
< 30 && !ctx
->Extensions
.EXT_texture_integer
)
2613 case GL_COMPRESSED_RG
:
2620 if (ctx
->Extensions
.EXT_texture_shared_exponent
) {
2621 switch (internalFormat
) {
2622 case GL_RGB9_E5_EXT
:
2629 if (ctx
->Extensions
.EXT_packed_float
) {
2630 switch (internalFormat
) {
2631 case GL_R11F_G11F_B10F_EXT
:
2638 if (ctx
->Extensions
.ARB_depth_buffer_float
) {
2639 switch (internalFormat
) {
2640 case GL_DEPTH_COMPONENT32F
:
2641 return GL_DEPTH_COMPONENT
;
2642 case GL_DEPTH32F_STENCIL8
:
2643 return GL_DEPTH_STENCIL
;
2649 return -1; /* error */
2653 * Returns the effective internal format from a texture format and type.
2654 * This is used by texture image operations internally for validation, when
2655 * the specified internal format is a base (unsized) format.
2657 * This method will only return a valid effective internal format if the
2658 * combination of format, type and internal format in base form, is acceptable.
2660 * If a single sized internal format is defined in the spec (OpenGL-ES 3.0.4) or
2661 * in extensions, to unambiguously correspond to the given base format, then
2662 * that internal format is returned as the effective. Otherwise, if the
2663 * combination is accepted but a single effective format is not defined, the
2664 * passed base format will be returned instead.
2666 * \param format the texture format
2667 * \param type the texture type
2670 _mesa_es3_effective_internal_format_for_format_and_type(GLenum format
,
2674 case GL_UNSIGNED_BYTE
:
2684 /* Although LUMINANCE_ALPHA, LUMINANCE and ALPHA appear in table 3.12,
2685 * (section 3.8 Texturing, page 128 of the OpenGL-ES 3.0.4) as effective
2686 * internal formats, they do not correspond to GL constants, so the base
2687 * format is returned instead.
2690 case GL_LUMINANCE_ALPHA
:
2697 case GL_UNSIGNED_SHORT_4_4_4_4
:
2698 if (format
== GL_RGBA
)
2702 case GL_UNSIGNED_SHORT_5_5_5_1
:
2703 if (format
== GL_RGBA
)
2707 case GL_UNSIGNED_SHORT_5_6_5
:
2708 if (format
== GL_RGB
)
2712 /* OES_packed_depth_stencil */
2713 case GL_UNSIGNED_INT_24_8
:
2714 if (format
== GL_DEPTH_STENCIL
)
2715 return GL_DEPTH24_STENCIL8
;
2718 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
2719 if (format
== GL_DEPTH_STENCIL
)
2720 return GL_DEPTH32F_STENCIL8
;
2723 case GL_UNSIGNED_SHORT
:
2724 if (format
== GL_DEPTH_COMPONENT
)
2725 return GL_DEPTH_COMPONENT16
;
2728 case GL_UNSIGNED_INT
:
2729 /* It can be DEPTH_COMPONENT16 or DEPTH_COMPONENT24, so just return
2732 if (format
== GL_DEPTH_COMPONENT
)
2736 /* OES_texture_float and OES_texture_half_float */
2738 if (format
== GL_DEPTH_COMPONENT
)
2739 return GL_DEPTH_COMPONENT32F
;
2741 case GL_HALF_FLOAT_OES
:
2745 case GL_LUMINANCE_ALPHA
:
2761 /* GL_EXT_texture_type_2_10_10_10_REV */
2762 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2771 /* fall through and return NONE */
2779 * Do error checking of format/type combinations for OpenGL ES 3
2781 * \return error code, or GL_NO_ERROR.
2784 _mesa_es3_error_check_format_and_type(const struct gl_context
*ctx
,
2785 GLenum format
, GLenum type
,
2786 GLenum internalFormat
)
2788 /* If internalFormat is an unsized format, then the effective internal
2789 * format derived from format and type should be used instead. Page 127,
2790 * section "3.8 Texturing" of the GLES 3.0.4 spec states:
2792 * "if internalformat is a base internal format, the effective
2793 * internal format is a sized internal format that is derived
2794 * from the format and type for internal use by the GL.
2795 * Table 3.12 specifies the mapping of format and type to effective
2796 * internal formats. The effective internal format is used by the GL
2797 * for purposes such as texture completeness or type checks for
2798 * CopyTex* commands. In these cases, the GL is required to operate
2799 * as if the effective internal format was used as the internalformat
2800 * when specifying the texture data."
2802 if (_mesa_is_enum_format_unsized(internalFormat
)) {
2803 GLenum effectiveInternalFormat
=
2804 _mesa_es3_effective_internal_format_for_format_and_type(format
, type
);
2806 if (effectiveInternalFormat
== GL_NONE
)
2807 return GL_INVALID_OPERATION
;
2809 GLenum baseInternalFormat
;
2810 if (internalFormat
== GL_BGRA_EXT
) {
2811 /* Unfortunately, _mesa_base_tex_format returns a base format of
2812 * GL_RGBA for GL_BGRA_EXT. This makes perfect sense if you're
2813 * asking the question, "what channels does this format have?"
2814 * However, if we're trying to determine if two internal formats
2815 * match in the ES3 sense, we actually want GL_BGRA.
2817 baseInternalFormat
= GL_BGRA_EXT
;
2819 baseInternalFormat
=
2820 _mesa_base_tex_format(ctx
, effectiveInternalFormat
);
2823 if (internalFormat
!= baseInternalFormat
)
2824 return GL_INVALID_OPERATION
;
2826 internalFormat
= effectiveInternalFormat
;
2831 if (type
!= GL_UNSIGNED_BYTE
|| internalFormat
!= GL_BGRA
)
2832 return GL_INVALID_OPERATION
;
2837 case GL_UNSIGNED_BYTE
:
2838 switch (internalFormat
) {
2843 case GL_SRGB8_ALPHA8_EXT
:
2846 return GL_INVALID_OPERATION
;
2851 if (internalFormat
!= GL_RGBA8_SNORM
)
2852 return GL_INVALID_OPERATION
;
2855 case GL_UNSIGNED_SHORT_4_4_4_4
:
2856 switch (internalFormat
) {
2861 return GL_INVALID_OPERATION
;
2865 case GL_UNSIGNED_SHORT_5_5_5_1
:
2866 switch (internalFormat
) {
2871 return GL_INVALID_OPERATION
;
2875 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2876 switch (internalFormat
) {
2877 case GL_RGBA
: /* GL_EXT_texture_type_2_10_10_10_REV */
2882 return GL_INVALID_OPERATION
;
2887 if (internalFormat
!= GL_RGBA16F
)
2888 return GL_INVALID_OPERATION
;
2892 switch (internalFormat
) {
2897 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
2900 return GL_INVALID_OPERATION
;
2904 case GL_HALF_FLOAT_OES
:
2905 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
2908 return GL_INVALID_OPERATION
;
2912 case GL_RGBA_INTEGER
:
2914 case GL_UNSIGNED_BYTE
:
2915 if (internalFormat
!= GL_RGBA8UI
)
2916 return GL_INVALID_OPERATION
;
2920 if (internalFormat
!= GL_RGBA8I
)
2921 return GL_INVALID_OPERATION
;
2924 case GL_UNSIGNED_SHORT
:
2925 if (internalFormat
!= GL_RGBA16UI
)
2926 return GL_INVALID_OPERATION
;
2930 if (internalFormat
!= GL_RGBA16I
)
2931 return GL_INVALID_OPERATION
;
2934 case GL_UNSIGNED_INT
:
2935 if (internalFormat
!= GL_RGBA32UI
)
2936 return GL_INVALID_OPERATION
;
2940 if (internalFormat
!= GL_RGBA32I
)
2941 return GL_INVALID_OPERATION
;
2944 case GL_UNSIGNED_INT_2_10_10_10_REV
:
2945 if (internalFormat
!= GL_RGB10_A2UI
)
2946 return GL_INVALID_OPERATION
;
2950 return GL_INVALID_OPERATION
;
2956 case GL_UNSIGNED_BYTE
:
2957 switch (internalFormat
) {
2964 return GL_INVALID_OPERATION
;
2969 if (internalFormat
!= GL_RGB8_SNORM
)
2970 return GL_INVALID_OPERATION
;
2973 case GL_UNSIGNED_SHORT_5_6_5
:
2974 switch (internalFormat
) {
2979 return GL_INVALID_OPERATION
;
2983 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
2984 if (internalFormat
!= GL_R11F_G11F_B10F
)
2985 return GL_INVALID_OPERATION
;
2988 case GL_UNSIGNED_INT_5_9_9_9_REV
:
2989 if (internalFormat
!= GL_RGB9_E5
)
2990 return GL_INVALID_OPERATION
;
2994 switch (internalFormat
) {
2996 case GL_R11F_G11F_B10F
:
3000 return GL_INVALID_OPERATION
;
3005 switch (internalFormat
) {
3008 case GL_R11F_G11F_B10F
:
3012 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
3015 return GL_INVALID_OPERATION
;
3019 case GL_HALF_FLOAT_OES
:
3020 if (!ctx
->Extensions
.OES_texture_half_float
|| internalFormat
!= format
)
3021 return GL_INVALID_OPERATION
;
3024 case GL_UNSIGNED_INT_2_10_10_10_REV
:
3025 switch (internalFormat
) {
3026 case GL_RGB
: /* GL_EXT_texture_type_2_10_10_10_REV */
3029 return GL_INVALID_OPERATION
;
3034 return GL_INVALID_OPERATION
;
3038 case GL_RGB_INTEGER
:
3040 case GL_UNSIGNED_BYTE
:
3041 if (internalFormat
!= GL_RGB8UI
)
3042 return GL_INVALID_OPERATION
;
3046 if (internalFormat
!= GL_RGB8I
)
3047 return GL_INVALID_OPERATION
;
3050 case GL_UNSIGNED_SHORT
:
3051 if (internalFormat
!= GL_RGB16UI
)
3052 return GL_INVALID_OPERATION
;
3056 if (internalFormat
!= GL_RGB16I
)
3057 return GL_INVALID_OPERATION
;
3060 case GL_UNSIGNED_INT
:
3061 if (internalFormat
!= GL_RGB32UI
)
3062 return GL_INVALID_OPERATION
;
3066 if (internalFormat
!= GL_RGB32I
)
3067 return GL_INVALID_OPERATION
;
3071 return GL_INVALID_OPERATION
;
3077 case GL_UNSIGNED_BYTE
:
3078 if (internalFormat
!= GL_RG8
)
3079 return GL_INVALID_OPERATION
;
3083 if (internalFormat
!= GL_RG8_SNORM
)
3084 return GL_INVALID_OPERATION
;
3088 case GL_HALF_FLOAT_OES
:
3089 switch (internalFormat
) {
3093 if (ctx
->Extensions
.ARB_texture_rg
&&
3094 ctx
->Extensions
.OES_texture_half_float
)
3098 return GL_INVALID_OPERATION
;
3103 switch (internalFormat
) {
3108 if (ctx
->Extensions
.ARB_texture_rg
&&
3109 ctx
->Extensions
.OES_texture_float
)
3113 return GL_INVALID_OPERATION
;
3118 return GL_INVALID_OPERATION
;
3124 case GL_UNSIGNED_BYTE
:
3125 if (internalFormat
!= GL_RG8UI
)
3126 return GL_INVALID_OPERATION
;
3130 if (internalFormat
!= GL_RG8I
)
3131 return GL_INVALID_OPERATION
;
3134 case GL_UNSIGNED_SHORT
:
3135 if (internalFormat
!= GL_RG16UI
)
3136 return GL_INVALID_OPERATION
;
3140 if (internalFormat
!= GL_RG16I
)
3141 return GL_INVALID_OPERATION
;
3144 case GL_UNSIGNED_INT
:
3145 if (internalFormat
!= GL_RG32UI
)
3146 return GL_INVALID_OPERATION
;
3150 if (internalFormat
!= GL_RG32I
)
3151 return GL_INVALID_OPERATION
;
3155 return GL_INVALID_OPERATION
;
3161 case GL_UNSIGNED_BYTE
:
3162 if (internalFormat
!= GL_R8
)
3163 return GL_INVALID_OPERATION
;
3167 if (internalFormat
!= GL_R8_SNORM
)
3168 return GL_INVALID_OPERATION
;
3172 case GL_HALF_FLOAT_OES
:
3173 switch (internalFormat
) {
3178 if (ctx
->Extensions
.ARB_texture_rg
&&
3179 ctx
->Extensions
.OES_texture_half_float
)
3183 return GL_INVALID_OPERATION
;
3188 switch (internalFormat
) {
3193 if (ctx
->Extensions
.ARB_texture_rg
&&
3194 ctx
->Extensions
.OES_texture_float
)
3198 return GL_INVALID_OPERATION
;
3203 return GL_INVALID_OPERATION
;
3207 case GL_RED_INTEGER
:
3209 case GL_UNSIGNED_BYTE
:
3210 if (internalFormat
!= GL_R8UI
)
3211 return GL_INVALID_OPERATION
;
3215 if (internalFormat
!= GL_R8I
)
3216 return GL_INVALID_OPERATION
;
3219 case GL_UNSIGNED_SHORT
:
3220 if (internalFormat
!= GL_R16UI
)
3221 return GL_INVALID_OPERATION
;
3225 if (internalFormat
!= GL_R16I
)
3226 return GL_INVALID_OPERATION
;
3229 case GL_UNSIGNED_INT
:
3230 if (internalFormat
!= GL_R32UI
)
3231 return GL_INVALID_OPERATION
;
3235 if (internalFormat
!= GL_R32I
)
3236 return GL_INVALID_OPERATION
;
3240 return GL_INVALID_OPERATION
;
3244 case GL_DEPTH_COMPONENT
:
3246 case GL_UNSIGNED_SHORT
:
3247 if (internalFormat
!= GL_DEPTH_COMPONENT
3248 && internalFormat
!= GL_DEPTH_COMPONENT16
)
3249 return GL_INVALID_OPERATION
;
3252 case GL_UNSIGNED_INT
:
3253 switch (internalFormat
) {
3254 case GL_DEPTH_COMPONENT
:
3255 case GL_DEPTH_COMPONENT16
:
3256 case GL_DEPTH_COMPONENT24
:
3259 return GL_INVALID_OPERATION
;
3264 if (internalFormat
!= GL_DEPTH_COMPONENT32F
)
3265 return GL_INVALID_OPERATION
;
3269 return GL_INVALID_OPERATION
;
3273 case GL_DEPTH_STENCIL
:
3275 case GL_UNSIGNED_INT_24_8
:
3276 if (internalFormat
!= GL_DEPTH_STENCIL
3277 && internalFormat
!= GL_DEPTH24_STENCIL8
)
3278 return GL_INVALID_OPERATION
;
3281 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
3282 if (internalFormat
!= GL_DEPTH32F_STENCIL8
)
3283 return GL_INVALID_OPERATION
;
3287 return GL_INVALID_OPERATION
;
3291 case GL_STENCIL_INDEX
:
3292 if (!_mesa_has_OES_texture_stencil8(ctx
) ||
3293 type
!= GL_UNSIGNED_BYTE
||
3294 internalFormat
!= GL_STENCIL_INDEX8
) {
3295 return GL_INVALID_OPERATION
;
3301 case GL_LUMINANCE_ALPHA
:
3304 if (ctx
->Extensions
.OES_texture_float
&& internalFormat
== format
)
3306 case GL_HALF_FLOAT_OES
:
3307 if (ctx
->Extensions
.OES_texture_half_float
&& internalFormat
== format
)
3310 if (type
!= GL_UNSIGNED_BYTE
|| format
!= internalFormat
)
3311 return GL_INVALID_OPERATION
;
3319 set_swizzle(uint8_t *swizzle
, int x
, int y
, int z
, int w
)
3321 swizzle
[MESA_FORMAT_SWIZZLE_X
] = x
;
3322 swizzle
[MESA_FORMAT_SWIZZLE_Y
] = y
;
3323 swizzle
[MESA_FORMAT_SWIZZLE_Z
] = z
;
3324 swizzle
[MESA_FORMAT_SWIZZLE_W
] = w
;
3328 get_swizzle_from_gl_format(GLenum format
, uint8_t *swizzle
)
3332 case GL_RGBA_INTEGER_EXT
:
3333 set_swizzle(swizzle
, 0, 1, 2, 3);
3336 case GL_BGRA_INTEGER_EXT
:
3337 set_swizzle(swizzle
, 2, 1, 0, 3);
3340 set_swizzle(swizzle
, 3, 2, 1, 0);
3343 case GL_RGB_INTEGER_EXT
:
3344 set_swizzle(swizzle
, 0, 1, 2, 5);
3347 case GL_BGR_INTEGER_EXT
:
3348 set_swizzle(swizzle
, 2, 1, 0, 5);
3350 case GL_LUMINANCE_ALPHA
:
3351 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
3352 set_swizzle(swizzle
, 0, 0, 0, 1);
3356 set_swizzle(swizzle
, 0, 1, 4, 5);
3359 case GL_RED_INTEGER_EXT
:
3360 set_swizzle(swizzle
, 0, 4, 4, 5);
3363 case GL_GREEN_INTEGER_EXT
:
3364 set_swizzle(swizzle
, 4, 0, 4, 5);
3367 case GL_BLUE_INTEGER_EXT
:
3368 set_swizzle(swizzle
, 4, 4, 0, 5);
3371 case GL_ALPHA_INTEGER_EXT
:
3372 set_swizzle(swizzle
, 4, 4, 4, 0);
3375 case GL_LUMINANCE_INTEGER_EXT
:
3376 set_swizzle(swizzle
, 0, 0, 0, 5);
3379 set_swizzle(swizzle
, 0, 0, 0, 0);
3387 * Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
3388 * GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
3389 * otherwise (for non-array formats).
3391 * This function will typically be used to compute a mesa format from a GL type
3392 * so we can then call _mesa_format_convert. This function does
3393 * not consider byte swapping, so it returns types assuming that no byte
3394 * swapping is involved. If byte swapping is involved then clients are supposed
3395 * to handle that on their side before calling _mesa_format_convert.
3397 * This function returns an uint32_t that can pack a mesa_format or a
3398 * mesa_array_format. Clients must check the mesa array format bit
3399 * (MESA_ARRAY_FORMAT_BIT) on the return value to know if the returned
3400 * format is a mesa_array_format or a mesa_format.
3403 _mesa_format_from_format_and_type(GLenum format
, GLenum type
)
3405 bool is_array_format
= true;
3407 bool normalized
= false, is_float
= false, is_signed
= false;
3408 int num_channels
= 0, type_size
= 0;
3410 /* Extract array format type information from the OpenGL data type */
3412 case GL_UNSIGNED_BYTE
:
3419 case GL_UNSIGNED_SHORT
:
3426 case GL_UNSIGNED_INT
:
3434 case GL_HALF_FLOAT_OES
:
3445 is_array_format
= false;
3449 /* Extract array format swizzle information from the OpenGL format */
3450 if (is_array_format
)
3451 is_array_format
= get_swizzle_from_gl_format(format
, swizzle
);
3453 /* If this is an array format type after checking data type and format,
3454 * create the array format
3456 if (is_array_format
) {
3457 normalized
= !_mesa_is_enum_format_integer(format
);
3458 num_channels
= _mesa_components_in_format(format
);
3460 return MESA_ARRAY_FORMAT(type_size
, is_signed
, is_float
,
3461 normalized
, num_channels
,
3462 swizzle
[0], swizzle
[1], swizzle
[2], swizzle
[3]);
3465 /* Otherwise this is not an array format, so return the mesa_format
3466 * matching the OpenGL format and data type
3469 case GL_UNSIGNED_SHORT_5_6_5
:
3470 if (format
== GL_RGB
)
3471 return MESA_FORMAT_B5G6R5_UNORM
;
3472 else if (format
== GL_BGR
)
3473 return MESA_FORMAT_R5G6B5_UNORM
;
3474 else if (format
== GL_RGB_INTEGER
)
3475 return MESA_FORMAT_B5G6R5_UINT
;
3477 case GL_UNSIGNED_SHORT_5_6_5_REV
:
3478 if (format
== GL_RGB
)
3479 return MESA_FORMAT_R5G6B5_UNORM
;
3480 else if (format
== GL_BGR
)
3481 return MESA_FORMAT_B5G6R5_UNORM
;
3482 else if (format
== GL_RGB_INTEGER
)
3483 return MESA_FORMAT_R5G6B5_UINT
;
3485 case GL_UNSIGNED_SHORT_4_4_4_4
:
3486 if (format
== GL_RGBA
)
3487 return MESA_FORMAT_A4B4G4R4_UNORM
;
3488 else if (format
== GL_BGRA
)
3489 return MESA_FORMAT_A4R4G4B4_UNORM
;
3490 else if (format
== GL_ABGR_EXT
)
3491 return MESA_FORMAT_R4G4B4A4_UNORM
;
3492 else if (format
== GL_RGBA_INTEGER
)
3493 return MESA_FORMAT_A4B4G4R4_UINT
;
3494 else if (format
== GL_BGRA_INTEGER
)
3495 return MESA_FORMAT_A4R4G4B4_UINT
;
3497 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
3498 if (format
== GL_RGBA
)
3499 return MESA_FORMAT_R4G4B4A4_UNORM
;
3500 else if (format
== GL_BGRA
)
3501 return MESA_FORMAT_B4G4R4A4_UNORM
;
3502 else if (format
== GL_ABGR_EXT
)
3503 return MESA_FORMAT_A4B4G4R4_UNORM
;
3504 else if (format
== GL_RGBA_INTEGER
)
3505 return MESA_FORMAT_R4G4B4A4_UINT
;
3506 else if (format
== GL_BGRA_INTEGER
)
3507 return MESA_FORMAT_B4G4R4A4_UINT
;
3509 case GL_UNSIGNED_SHORT_5_5_5_1
:
3510 if (format
== GL_RGBA
)
3511 return MESA_FORMAT_A1B5G5R5_UNORM
;
3512 else if (format
== GL_BGRA
)
3513 return MESA_FORMAT_A1R5G5B5_UNORM
;
3514 else if (format
== GL_RGBA_INTEGER
)
3515 return MESA_FORMAT_A1B5G5R5_UINT
;
3516 else if (format
== GL_BGRA_INTEGER
)
3517 return MESA_FORMAT_A1R5G5B5_UINT
;
3519 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
3520 if (format
== GL_RGBA
)
3521 return MESA_FORMAT_R5G5B5A1_UNORM
;
3522 else if (format
== GL_BGRA
)
3523 return MESA_FORMAT_B5G5R5A1_UNORM
;
3524 else if (format
== GL_RGBA_INTEGER
)
3525 return MESA_FORMAT_R5G5B5A1_UINT
;
3526 else if (format
== GL_BGRA_INTEGER
)
3527 return MESA_FORMAT_B5G5R5A1_UINT
;
3529 case GL_UNSIGNED_BYTE_3_3_2
:
3530 if (format
== GL_RGB
)
3531 return MESA_FORMAT_B2G3R3_UNORM
;
3532 else if (format
== GL_RGB_INTEGER
)
3533 return MESA_FORMAT_B2G3R3_UINT
;
3535 case GL_UNSIGNED_BYTE_2_3_3_REV
:
3536 if (format
== GL_RGB
)
3537 return MESA_FORMAT_R3G3B2_UNORM
;
3538 else if (format
== GL_RGB_INTEGER
)
3539 return MESA_FORMAT_R3G3B2_UINT
;
3541 case GL_UNSIGNED_INT_5_9_9_9_REV
:
3542 if (format
== GL_RGB
)
3543 return MESA_FORMAT_R9G9B9E5_FLOAT
;
3545 case GL_UNSIGNED_INT_10_10_10_2
:
3546 if (format
== GL_RGBA
)
3547 return MESA_FORMAT_A2B10G10R10_UNORM
;
3548 else if (format
== GL_RGBA_INTEGER
)
3549 return MESA_FORMAT_A2B10G10R10_UINT
;
3550 else if (format
== GL_BGRA
)
3551 return MESA_FORMAT_A2R10G10B10_UNORM
;
3552 else if (format
== GL_BGRA_INTEGER
)
3553 return MESA_FORMAT_A2R10G10B10_UINT
;
3555 case GL_UNSIGNED_INT_2_10_10_10_REV
:
3556 if (format
== GL_RGB
)
3557 return MESA_FORMAT_R10G10B10X2_UNORM
;
3558 if (format
== GL_RGBA
)
3559 return MESA_FORMAT_R10G10B10A2_UNORM
;
3560 else if (format
== GL_RGBA_INTEGER
)
3561 return MESA_FORMAT_R10G10B10A2_UINT
;
3562 else if (format
== GL_BGRA
)
3563 return MESA_FORMAT_B10G10R10A2_UNORM
;
3564 else if (format
== GL_BGRA_INTEGER
)
3565 return MESA_FORMAT_B10G10R10A2_UINT
;
3567 case GL_UNSIGNED_INT_8_8_8_8
:
3568 if (format
== GL_RGBA
)
3569 return MESA_FORMAT_A8B8G8R8_UNORM
;
3570 else if (format
== GL_BGRA
)
3571 return MESA_FORMAT_A8R8G8B8_UNORM
;
3572 else if (format
== GL_ABGR_EXT
)
3573 return MESA_FORMAT_R8G8B8A8_UNORM
;
3574 else if (format
== GL_RGBA_INTEGER
)
3575 return MESA_FORMAT_A8B8G8R8_UINT
;
3576 else if (format
== GL_BGRA_INTEGER
)
3577 return MESA_FORMAT_A8R8G8B8_UINT
;
3579 case GL_UNSIGNED_INT_8_8_8_8_REV
:
3580 if (format
== GL_RGBA
)
3581 return MESA_FORMAT_R8G8B8A8_UNORM
;
3582 else if (format
== GL_BGRA
)
3583 return MESA_FORMAT_B8G8R8A8_UNORM
;
3584 else if (format
== GL_ABGR_EXT
)
3585 return MESA_FORMAT_A8B8G8R8_UNORM
;
3586 else if (format
== GL_RGBA_INTEGER
)
3587 return MESA_FORMAT_R8G8B8A8_UINT
;
3588 else if (format
== GL_BGRA_INTEGER
)
3589 return MESA_FORMAT_B8G8R8A8_UINT
;
3591 case GL_UNSIGNED_SHORT_8_8_MESA
:
3592 if (format
== GL_YCBCR_MESA
)
3593 return MESA_FORMAT_YCBCR
;
3595 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
3596 if (format
== GL_YCBCR_MESA
)
3597 return MESA_FORMAT_YCBCR_REV
;
3599 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
3600 if (format
== GL_RGB
)
3601 return MESA_FORMAT_R11G11B10_FLOAT
;
3604 if (format
== GL_DEPTH_COMPONENT
)
3605 return MESA_FORMAT_Z_FLOAT32
;
3607 case GL_UNSIGNED_INT
:
3608 if (format
== GL_DEPTH_COMPONENT
)
3609 return MESA_FORMAT_Z_UNORM32
;
3611 case GL_UNSIGNED_SHORT
:
3612 if (format
== GL_DEPTH_COMPONENT
)
3613 return MESA_FORMAT_Z_UNORM16
;
3615 case GL_UNSIGNED_INT_24_8
:
3616 if (format
== GL_DEPTH_STENCIL
)
3617 return MESA_FORMAT_Z24_UNORM_S8_UINT
;
3619 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
3620 if (format
== GL_DEPTH_STENCIL
)
3621 return MESA_FORMAT_Z32_FLOAT_S8X24_UINT
;
3627 /* If we got here it means that we could not find a Mesa format that
3628 * matches the GL format/type provided. We may need to add a new Mesa
3629 * format in that case.
3631 unreachable("Unsupported format");
3635 * Returns true if \p internal_format is a sized internal format that
3636 * is marked "Color Renderable" in Table 8.10 of the ES 3.2 specification.
3639 _mesa_is_es3_color_renderable(GLenum internal_format
)
3641 switch (internal_format
) {
3651 case GL_SRGB8_ALPHA8
:
3658 case GL_R11F_G11F_B10F
:
3684 * Returns true if \p internal_format is a sized internal format that
3685 * is marked "Texture Filterable" in Table 8.10 of the ES 3.2 specification.
3688 _mesa_is_es3_texture_filterable(const struct gl_context
*ctx
,
3689 GLenum internal_format
)
3691 switch (internal_format
) {
3702 case GL_RGBA8_SNORM
:
3705 case GL_SRGB8_ALPHA8
:
3710 case GL_R11F_G11F_B10F
:
3717 /* The OES_texture_float_linear spec says:
3719 * "When implemented against OpenGL ES 3.0 or later versions, sized
3720 * 32-bit floating-point formats become texture-filterable. This
3721 * should be noted by, for example, checking the ``TF'' column of
3722 * table 8.13 in the ES 3.1 Specification (``Correspondence of sized
3723 * internal formats to base internal formats ... and use cases ...'')
3724 * for the R32F, RG32F, RGB32F, and RGBA32F formats."
3726 return ctx
->Extensions
.OES_texture_float_linear
;