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 BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include "glformats.h"
32 * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
35 _mesa_type_is_packed(GLenum type
)
38 case GL_UNSIGNED_BYTE_3_3_2
:
39 case GL_UNSIGNED_BYTE_2_3_3_REV
:
40 case MESA_UNSIGNED_BYTE_4_4
:
41 case GL_UNSIGNED_SHORT_5_6_5
:
42 case GL_UNSIGNED_SHORT_5_6_5_REV
:
43 case GL_UNSIGNED_SHORT_4_4_4_4
:
44 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
45 case GL_UNSIGNED_SHORT_5_5_5_1
:
46 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
47 case GL_UNSIGNED_INT_8_8_8_8
:
48 case GL_UNSIGNED_INT_8_8_8_8_REV
:
49 case GL_UNSIGNED_INT_10_10_10_2
:
50 case GL_UNSIGNED_INT_2_10_10_10_REV
:
51 case GL_UNSIGNED_SHORT_8_8_MESA
:
52 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
53 case GL_UNSIGNED_INT_24_8_EXT
:
54 case GL_UNSIGNED_INT_5_9_9_9_REV
:
55 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
56 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
65 * Get the size of a GL data type.
67 * \param type GL data type.
69 * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
70 * if an invalid type enum.
73 _mesa_sizeof_type(GLenum type
)
78 case GL_UNSIGNED_BYTE
:
79 return sizeof(GLubyte
);
81 return sizeof(GLbyte
);
82 case GL_UNSIGNED_SHORT
:
83 return sizeof(GLushort
);
85 return sizeof(GLshort
);
87 return sizeof(GLuint
);
91 return sizeof(GLfloat
);
93 return sizeof(GLdouble
);
94 case GL_HALF_FLOAT_ARB
:
95 return sizeof(GLhalfARB
);
97 return sizeof(GLfixed
);
105 * Same as _mesa_sizeof_type() but also accepting the packed pixel
109 _mesa_sizeof_packed_type(GLenum type
)
114 case GL_UNSIGNED_BYTE
:
115 return sizeof(GLubyte
);
117 return sizeof(GLbyte
);
118 case GL_UNSIGNED_SHORT
:
119 return sizeof(GLushort
);
121 return sizeof(GLshort
);
122 case GL_UNSIGNED_INT
:
123 return sizeof(GLuint
);
125 return sizeof(GLint
);
126 case GL_HALF_FLOAT_ARB
:
127 return sizeof(GLhalfARB
);
129 return sizeof(GLfloat
);
130 case GL_UNSIGNED_BYTE_3_3_2
:
131 case GL_UNSIGNED_BYTE_2_3_3_REV
:
132 case MESA_UNSIGNED_BYTE_4_4
:
133 return sizeof(GLubyte
);
134 case GL_UNSIGNED_SHORT_5_6_5
:
135 case GL_UNSIGNED_SHORT_5_6_5_REV
:
136 case GL_UNSIGNED_SHORT_4_4_4_4
:
137 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
138 case GL_UNSIGNED_SHORT_5_5_5_1
:
139 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
140 case GL_UNSIGNED_SHORT_8_8_MESA
:
141 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
142 return sizeof(GLushort
);
143 case GL_UNSIGNED_INT_8_8_8_8
:
144 case GL_UNSIGNED_INT_8_8_8_8_REV
:
145 case GL_UNSIGNED_INT_10_10_10_2
:
146 case GL_UNSIGNED_INT_2_10_10_10_REV
:
147 case GL_UNSIGNED_INT_24_8_EXT
:
148 case GL_UNSIGNED_INT_5_9_9_9_REV
:
149 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
150 return sizeof(GLuint
);
151 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
160 * Get the number of components in a pixel format.
162 * \param format pixel format.
164 * \return the number of components in the given format, or -1 if a bad format.
167 _mesa_components_in_format(GLenum format
)
171 case GL_STENCIL_INDEX
:
172 case GL_DEPTH_COMPONENT
:
174 case GL_RED_INTEGER_EXT
:
176 case GL_GREEN_INTEGER_EXT
:
178 case GL_BLUE_INTEGER_EXT
:
180 case GL_ALPHA_INTEGER_EXT
:
182 case GL_LUMINANCE_INTEGER_EXT
:
186 case GL_LUMINANCE_ALPHA
:
187 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
190 case GL_DEPTH_STENCIL_EXT
:
198 case GL_RGB_INTEGER_EXT
:
199 case GL_BGR_INTEGER_EXT
:
205 case GL_RGBA_INTEGER_EXT
:
206 case GL_BGRA_INTEGER_EXT
:
216 * Get the bytes per pixel of pixel format type pair.
218 * \param format pixel format.
219 * \param type pixel type.
221 * \return bytes per pixel, or -1 if a bad format or type was given.
224 _mesa_bytes_per_pixel(GLenum format
, GLenum type
)
226 GLint comps
= _mesa_components_in_format(format
);
232 return 0; /* special case */
234 case GL_UNSIGNED_BYTE
:
235 return comps
* sizeof(GLubyte
);
237 case GL_UNSIGNED_SHORT
:
238 return comps
* sizeof(GLshort
);
240 case GL_UNSIGNED_INT
:
241 return comps
* sizeof(GLint
);
243 return comps
* sizeof(GLfloat
);
244 case GL_HALF_FLOAT_ARB
:
245 return comps
* sizeof(GLhalfARB
);
246 case GL_UNSIGNED_BYTE_3_3_2
:
247 case GL_UNSIGNED_BYTE_2_3_3_REV
:
248 if (format
== GL_RGB
|| format
== GL_BGR
||
249 format
== GL_RGB_INTEGER_EXT
|| format
== GL_BGR_INTEGER_EXT
)
250 return sizeof(GLubyte
);
252 return -1; /* error */
253 case GL_UNSIGNED_SHORT_5_6_5
:
254 case GL_UNSIGNED_SHORT_5_6_5_REV
:
255 if (format
== GL_RGB
|| format
== GL_BGR
||
256 format
== GL_RGB_INTEGER_EXT
|| format
== GL_BGR_INTEGER_EXT
)
257 return sizeof(GLushort
);
259 return -1; /* error */
260 case GL_UNSIGNED_SHORT_4_4_4_4
:
261 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
262 case GL_UNSIGNED_SHORT_5_5_5_1
:
263 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
264 if (format
== GL_RGBA
|| format
== GL_BGRA
|| format
== GL_ABGR_EXT
||
265 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
266 return sizeof(GLushort
);
269 case GL_UNSIGNED_INT_8_8_8_8
:
270 case GL_UNSIGNED_INT_8_8_8_8_REV
:
271 case GL_UNSIGNED_INT_10_10_10_2
:
272 case GL_UNSIGNED_INT_2_10_10_10_REV
:
273 if (format
== GL_RGBA
|| format
== GL_BGRA
|| format
== GL_ABGR_EXT
||
274 format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
)
275 return sizeof(GLuint
);
278 case GL_UNSIGNED_SHORT_8_8_MESA
:
279 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
280 if (format
== GL_YCBCR_MESA
)
281 return sizeof(GLushort
);
284 case GL_UNSIGNED_INT_24_8_EXT
:
285 if (format
== GL_DEPTH_STENCIL_EXT
)
286 return sizeof(GLuint
);
289 case GL_UNSIGNED_INT_5_9_9_9_REV
:
290 if (format
== GL_RGB
)
291 return sizeof(GLuint
);
294 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
295 if (format
== GL_RGB
)
296 return sizeof(GLuint
);
299 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
300 if (format
== GL_DEPTH_STENCIL
)
311 * Test if the given format is an integer (non-normalized) format.
314 _mesa_is_enum_format_integer(GLenum format
)
317 /* generic integer formats */
318 case GL_RED_INTEGER_EXT
:
319 case GL_GREEN_INTEGER_EXT
:
320 case GL_BLUE_INTEGER_EXT
:
321 case GL_ALPHA_INTEGER_EXT
:
322 case GL_RGB_INTEGER_EXT
:
323 case GL_RGBA_INTEGER_EXT
:
324 case GL_BGR_INTEGER_EXT
:
325 case GL_BGRA_INTEGER_EXT
:
326 case GL_LUMINANCE_INTEGER_EXT
:
327 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
329 /* specific integer formats */
330 case GL_RGBA32UI_EXT
:
334 case GL_ALPHA32UI_EXT
:
335 case GL_INTENSITY32UI_EXT
:
336 case GL_LUMINANCE32UI_EXT
:
337 case GL_LUMINANCE_ALPHA32UI_EXT
:
338 case GL_RGBA16UI_EXT
:
342 case GL_ALPHA16UI_EXT
:
343 case GL_INTENSITY16UI_EXT
:
344 case GL_LUMINANCE16UI_EXT
:
345 case GL_LUMINANCE_ALPHA16UI_EXT
:
350 case GL_ALPHA8UI_EXT
:
351 case GL_INTENSITY8UI_EXT
:
352 case GL_LUMINANCE8UI_EXT
:
353 case GL_LUMINANCE_ALPHA8UI_EXT
:
358 case GL_ALPHA32I_EXT
:
359 case GL_INTENSITY32I_EXT
:
360 case GL_LUMINANCE32I_EXT
:
361 case GL_LUMINANCE_ALPHA32I_EXT
:
366 case GL_ALPHA16I_EXT
:
367 case GL_INTENSITY16I_EXT
:
368 case GL_LUMINANCE16I_EXT
:
369 case GL_LUMINANCE_ALPHA16I_EXT
:
375 case GL_INTENSITY8I_EXT
:
376 case GL_LUMINANCE8I_EXT
:
377 case GL_LUMINANCE_ALPHA8I_EXT
:
387 * Test if the given type is an integer (non-normalized) format.
390 _mesa_is_type_integer(GLenum type
)
394 case GL_UNSIGNED_INT
:
396 case GL_UNSIGNED_SHORT
:
398 case GL_UNSIGNED_BYTE
:
407 * Test if the given format or type is an integer (non-normalized) format.
410 _mesa_is_enum_format_or_type_integer(GLenum format
, GLenum type
)
412 return _mesa_is_enum_format_integer(format
) || _mesa_is_type_integer(type
);
417 _mesa_is_type_unsigned(GLenum type
)
420 case GL_UNSIGNED_INT
:
421 case GL_UNSIGNED_INT_8_8_8_8
:
422 case GL_UNSIGNED_INT_8_8_8_8_REV
:
423 case GL_UNSIGNED_INT_10_10_10_2
:
424 case GL_UNSIGNED_INT_2_10_10_10_REV
:
426 case GL_UNSIGNED_SHORT
:
427 case GL_UNSIGNED_SHORT_4_4_4_4
:
428 case GL_UNSIGNED_SHORT_5_5_5_1
:
429 case GL_UNSIGNED_SHORT_5_6_5
:
430 case GL_UNSIGNED_SHORT_5_6_5_REV
:
431 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
432 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
433 case GL_UNSIGNED_SHORT_8_8_MESA
:
434 case GL_UNSIGNED_SHORT_8_8_REV_MESA
:
436 case GL_UNSIGNED_BYTE
:
437 case GL_UNSIGNED_BYTE_3_3_2
:
438 case GL_UNSIGNED_BYTE_2_3_3_REV
:
448 * Test if the given image format is a color/RGBA format (i.e., not color
449 * index, depth, stencil, etc).
450 * \param format the image format value (may by an internal texture format)
451 * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
454 _mesa_is_color_format(GLenum format
)
472 case GL_LUMINANCE_ALPHA
:
473 case GL_LUMINANCE4_ALPHA4
:
474 case GL_LUMINANCE6_ALPHA2
:
475 case GL_LUMINANCE8_ALPHA8
:
476 case GL_LUMINANCE12_ALPHA4
:
477 case GL_LUMINANCE12_ALPHA12
:
478 case GL_LUMINANCE16_ALPHA16
:
511 /* float texture formats */
512 case GL_ALPHA16F_ARB
:
513 case GL_ALPHA32F_ARB
:
514 case GL_LUMINANCE16F_ARB
:
515 case GL_LUMINANCE32F_ARB
:
516 case GL_LUMINANCE_ALPHA16F_ARB
:
517 case GL_LUMINANCE_ALPHA32F_ARB
:
518 case GL_INTENSITY16F_ARB
:
519 case GL_INTENSITY32F_ARB
:
528 /* compressed formats */
529 case GL_COMPRESSED_ALPHA
:
530 case GL_COMPRESSED_LUMINANCE
:
531 case GL_COMPRESSED_LUMINANCE_ALPHA
:
532 case GL_COMPRESSED_INTENSITY
:
533 case GL_COMPRESSED_RED
:
534 case GL_COMPRESSED_RG
:
535 case GL_COMPRESSED_RGB
:
536 case GL_COMPRESSED_RGBA
:
541 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
542 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
543 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
544 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
545 case GL_COMPRESSED_RGB_FXT1_3DFX
:
546 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
549 case GL_SRGB_ALPHA_EXT
:
550 case GL_SRGB8_ALPHA8_EXT
:
551 case GL_SLUMINANCE_ALPHA_EXT
:
552 case GL_SLUMINANCE8_ALPHA8_EXT
:
553 case GL_SLUMINANCE_EXT
:
554 case GL_SLUMINANCE8_EXT
:
555 case GL_COMPRESSED_SRGB_EXT
:
556 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
557 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
558 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
559 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
560 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
561 case GL_COMPRESSED_SLUMINANCE_EXT
:
562 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
563 case GL_COMPRESSED_RED_RGTC1
:
564 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
565 case GL_COMPRESSED_RG_RGTC2
:
566 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
567 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
568 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
569 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
570 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
571 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
572 case GL_ETC1_RGB8_OES
:
573 case GL_COMPRESSED_RGB8_ETC2
:
574 case GL_COMPRESSED_SRGB8_ETC2
:
575 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
576 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
577 case GL_COMPRESSED_R11_EAC
:
578 case GL_COMPRESSED_RG11_EAC
:
579 case GL_COMPRESSED_SIGNED_R11_EAC
:
580 case GL_COMPRESSED_SIGNED_RG11_EAC
:
581 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
582 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
583 /* generic integer formats */
584 case GL_RED_INTEGER_EXT
:
585 case GL_GREEN_INTEGER_EXT
:
586 case GL_BLUE_INTEGER_EXT
:
587 case GL_ALPHA_INTEGER_EXT
:
588 case GL_RGB_INTEGER_EXT
:
589 case GL_RGBA_INTEGER_EXT
:
590 case GL_BGR_INTEGER_EXT
:
591 case GL_BGRA_INTEGER_EXT
:
593 case GL_LUMINANCE_INTEGER_EXT
:
594 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
595 /* sized integer formats */
596 case GL_RGBA32UI_EXT
:
600 case GL_ALPHA32UI_EXT
:
601 case GL_INTENSITY32UI_EXT
:
602 case GL_LUMINANCE32UI_EXT
:
603 case GL_LUMINANCE_ALPHA32UI_EXT
:
604 case GL_RGBA16UI_EXT
:
608 case GL_ALPHA16UI_EXT
:
609 case GL_INTENSITY16UI_EXT
:
610 case GL_LUMINANCE16UI_EXT
:
611 case GL_LUMINANCE_ALPHA16UI_EXT
:
616 case GL_ALPHA8UI_EXT
:
617 case GL_INTENSITY8UI_EXT
:
618 case GL_LUMINANCE8UI_EXT
:
619 case GL_LUMINANCE_ALPHA8UI_EXT
:
624 case GL_ALPHA32I_EXT
:
625 case GL_INTENSITY32I_EXT
:
626 case GL_LUMINANCE32I_EXT
:
627 case GL_LUMINANCE_ALPHA32I_EXT
:
632 case GL_ALPHA16I_EXT
:
633 case GL_INTENSITY16I_EXT
:
634 case GL_LUMINANCE16I_EXT
:
635 case GL_LUMINANCE_ALPHA16I_EXT
:
641 case GL_INTENSITY8I_EXT
:
642 case GL_LUMINANCE8I_EXT
:
643 case GL_LUMINANCE_ALPHA8I_EXT
:
644 /* signed, normalized texture formats */
656 case GL_RGBA16_SNORM
:
658 case GL_ALPHA8_SNORM
:
659 case GL_ALPHA16_SNORM
:
660 case GL_LUMINANCE_SNORM
:
661 case GL_LUMINANCE8_SNORM
:
662 case GL_LUMINANCE16_SNORM
:
663 case GL_LUMINANCE_ALPHA_SNORM
:
664 case GL_LUMINANCE8_ALPHA8_SNORM
:
665 case GL_LUMINANCE16_ALPHA16_SNORM
:
666 case GL_INTENSITY_SNORM
:
667 case GL_INTENSITY8_SNORM
:
668 case GL_INTENSITY16_SNORM
:
670 case GL_R11F_G11F_B10F
:
673 case GL_YCBCR_MESA
: /* not considered to be RGB */
682 * Test if the given image format is a depth component format.
685 _mesa_is_depth_format(GLenum format
)
688 case GL_DEPTH_COMPONENT
:
689 case GL_DEPTH_COMPONENT16
:
690 case GL_DEPTH_COMPONENT24
:
691 case GL_DEPTH_COMPONENT32
:
692 case GL_DEPTH_COMPONENT32F
:
701 * Test if the given image format is a stencil format.
704 _mesa_is_stencil_format(GLenum format
)
707 case GL_STENCIL_INDEX
:
716 * Test if the given image format is a YCbCr format.
719 _mesa_is_ycbcr_format(GLenum format
)
731 * Test if the given image format is a depth+stencil format.
734 _mesa_is_depthstencil_format(GLenum format
)
737 case GL_DEPTH24_STENCIL8_EXT
:
738 case GL_DEPTH_STENCIL_EXT
:
739 case GL_DEPTH32F_STENCIL8
:
748 * Test if the given image format is a depth or stencil format.
751 _mesa_is_depth_or_stencil_format(GLenum format
)
754 case GL_DEPTH_COMPONENT
:
755 case GL_DEPTH_COMPONENT16
:
756 case GL_DEPTH_COMPONENT24
:
757 case GL_DEPTH_COMPONENT32
:
758 case GL_STENCIL_INDEX
:
759 case GL_STENCIL_INDEX1_EXT
:
760 case GL_STENCIL_INDEX4_EXT
:
761 case GL_STENCIL_INDEX8_EXT
:
762 case GL_STENCIL_INDEX16_EXT
:
763 case GL_DEPTH_STENCIL_EXT
:
764 case GL_DEPTH24_STENCIL8_EXT
:
765 case GL_DEPTH_COMPONENT32F
:
766 case GL_DEPTH32F_STENCIL8
:
775 * Test if the given image format is a dudv format.
778 _mesa_is_dudv_format(GLenum format
)
791 * Test if an image format is a supported compressed format.
792 * \param format the internal format token provided by the user.
793 * \return GL_TRUE if compressed, GL_FALSE if uncompressed
796 _mesa_is_compressed_format(struct gl_context
*ctx
, GLenum format
)
799 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
800 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
801 return ctx
->Extensions
.EXT_texture_compression_s3tc
;
802 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
803 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
804 return (_mesa_is_desktop_gl(ctx
) &&
805 ctx
->Extensions
.EXT_texture_compression_s3tc
) ||
806 (ctx
->API
== API_OPENGLES2
&&
807 ctx
->Extensions
.ANGLE_texture_compression_dxt
);
812 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.S3_s3tc
;
813 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
814 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
815 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
816 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
817 return _mesa_is_desktop_gl(ctx
)
818 && ctx
->Extensions
.EXT_texture_sRGB
819 && ctx
->Extensions
.EXT_texture_compression_s3tc
;
820 case GL_COMPRESSED_RGB_FXT1_3DFX
:
821 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
822 return _mesa_is_desktop_gl(ctx
)
823 && ctx
->Extensions
.TDFX_texture_compression_FXT1
;
824 case GL_COMPRESSED_RED_RGTC1
:
825 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
826 case GL_COMPRESSED_RG_RGTC2
:
827 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
828 return _mesa_is_desktop_gl(ctx
)
829 && ctx
->Extensions
.ARB_texture_compression_rgtc
;
830 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
831 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
832 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
833 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
834 return ctx
->API
== API_OPENGL_COMPAT
835 && ctx
->Extensions
.EXT_texture_compression_latc
;
836 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
837 return ctx
->API
== API_OPENGL_COMPAT
838 && ctx
->Extensions
.ATI_texture_compression_3dc
;
839 case GL_ETC1_RGB8_OES
:
840 return _mesa_is_gles(ctx
)
841 && ctx
->Extensions
.OES_compressed_ETC1_RGB8_texture
;
842 case GL_COMPRESSED_RGB8_ETC2
:
843 case GL_COMPRESSED_SRGB8_ETC2
:
844 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
845 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
846 case GL_COMPRESSED_R11_EAC
:
847 case GL_COMPRESSED_RG11_EAC
:
848 case GL_COMPRESSED_SIGNED_R11_EAC
:
849 case GL_COMPRESSED_SIGNED_RG11_EAC
:
850 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
851 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
852 return _mesa_is_gles3(ctx
);
853 case GL_PALETTE4_RGB8_OES
:
854 case GL_PALETTE4_RGBA8_OES
:
855 case GL_PALETTE4_R5_G6_B5_OES
:
856 case GL_PALETTE4_RGBA4_OES
:
857 case GL_PALETTE4_RGB5_A1_OES
:
858 case GL_PALETTE8_RGB8_OES
:
859 case GL_PALETTE8_RGBA8_OES
:
860 case GL_PALETTE8_R5_G6_B5_OES
:
861 case GL_PALETTE8_RGBA4_OES
:
862 case GL_PALETTE8_RGB5_A1_OES
:
863 return ctx
->API
== API_OPENGLES
;
871 * Convert various base formats to the cooresponding integer format.
874 _mesa_base_format_to_integer_format(GLenum format
)
878 return GL_RED_INTEGER
;
880 return GL_GREEN_INTEGER
;
882 return GL_BLUE_INTEGER
;
884 return GL_RG_INTEGER
;
886 return GL_RGB_INTEGER
;
888 return GL_RGBA_INTEGER
;
890 return GL_BGR_INTEGER
;
892 return GL_BGRA_INTEGER
;
894 return GL_ALPHA_INTEGER
;
896 return GL_LUMINANCE_INTEGER_EXT
;
897 case GL_LUMINANCE_ALPHA
:
898 return GL_LUMINANCE_ALPHA_INTEGER_EXT
;
906 * Does the given base texture/renderbuffer format have the channel
910 _mesa_base_format_has_channel(GLenum base_format
, GLenum pname
)
913 case GL_TEXTURE_RED_SIZE
:
914 case GL_TEXTURE_RED_TYPE
:
915 case GL_RENDERBUFFER_RED_SIZE_EXT
:
916 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
917 if (base_format
== GL_RED
||
918 base_format
== GL_RG
||
919 base_format
== GL_RGB
||
920 base_format
== GL_RGBA
) {
924 case GL_TEXTURE_GREEN_SIZE
:
925 case GL_TEXTURE_GREEN_TYPE
:
926 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
927 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
928 if (base_format
== GL_RG
||
929 base_format
== GL_RGB
||
930 base_format
== GL_RGBA
) {
934 case GL_TEXTURE_BLUE_SIZE
:
935 case GL_TEXTURE_BLUE_TYPE
:
936 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
937 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
938 if (base_format
== GL_RGB
||
939 base_format
== GL_RGBA
) {
943 case GL_TEXTURE_ALPHA_SIZE
:
944 case GL_TEXTURE_ALPHA_TYPE
:
945 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
946 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
947 if (base_format
== GL_RGBA
||
948 base_format
== GL_ALPHA
||
949 base_format
== GL_LUMINANCE_ALPHA
) {
953 case GL_TEXTURE_LUMINANCE_SIZE
:
954 case GL_TEXTURE_LUMINANCE_TYPE
:
955 if (base_format
== GL_LUMINANCE
||
956 base_format
== GL_LUMINANCE_ALPHA
) {
960 case GL_TEXTURE_INTENSITY_SIZE
:
961 case GL_TEXTURE_INTENSITY_TYPE
:
962 if (base_format
== GL_INTENSITY
) {
966 case GL_TEXTURE_DEPTH_SIZE
:
967 case GL_TEXTURE_DEPTH_TYPE
:
968 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
969 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
970 if (base_format
== GL_DEPTH_STENCIL
||
971 base_format
== GL_DEPTH_COMPONENT
) {
975 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
976 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
977 if (base_format
== GL_DEPTH_STENCIL
||
978 base_format
== GL_STENCIL_INDEX
) {
983 _mesa_warning(NULL
, "%s: Unexpected channel token 0x%x\n",
984 __FUNCTION__
, pname
);
993 * If format is a generic compressed format, return the corresponding
994 * non-compressed format. For other formats, return the format as-is.
997 _mesa_generic_compressed_format_to_uncompressed_format(GLenum format
)
1000 case GL_COMPRESSED_RED
:
1002 case GL_COMPRESSED_RG
:
1004 case GL_COMPRESSED_RGB
:
1006 case GL_COMPRESSED_RGBA
:
1008 case GL_COMPRESSED_ALPHA
:
1010 case GL_COMPRESSED_LUMINANCE
:
1011 return GL_LUMINANCE
;
1012 case GL_COMPRESSED_LUMINANCE_ALPHA
:
1013 return GL_LUMINANCE_ALPHA
;
1014 case GL_COMPRESSED_INTENSITY
:
1015 return GL_INTENSITY
;
1017 case GL_COMPRESSED_SRGB
:
1019 case GL_COMPRESSED_SRGB_ALPHA
:
1020 return GL_SRGB_ALPHA
;
1021 case GL_COMPRESSED_SLUMINANCE
:
1022 return GL_SLUMINANCE
;
1023 case GL_COMPRESSED_SLUMINANCE_ALPHA
:
1024 return GL_SLUMINANCE_ALPHA
;
1032 * Return the equivalent non-generic internal format.
1033 * This is useful for comparing whether two internal formats are equivalent.
1036 _mesa_get_nongeneric_internalformat(GLenum format
)
1039 /* GL 1.1 formats. */
1049 case GL_LUMINANCE_ALPHA
:
1050 return GL_LUMINANCE8_ALPHA8
;
1054 return GL_LUMINANCE8
;
1060 return GL_INTENSITY8
;
1062 /* GL_ARB_texture_rg */
1069 /* GL_EXT_texture_sRGB */
1074 return GL_SRGB8_ALPHA8
;
1077 return GL_SLUMINANCE8
;
1079 case GL_SLUMINANCE_ALPHA
:
1080 return GL_SLUMINANCE8_ALPHA8
;
1082 /* GL_EXT_texture_snorm */
1084 return GL_RGBA8_SNORM
;
1087 return GL_RGB8_SNORM
;
1090 return GL_RG8_SNORM
;
1095 case GL_LUMINANCE_ALPHA_SNORM
:
1096 return GL_LUMINANCE8_ALPHA8_SNORM
;
1098 case GL_LUMINANCE_SNORM
:
1099 return GL_LUMINANCE8_SNORM
;
1101 case GL_ALPHA_SNORM
:
1102 return GL_ALPHA8_SNORM
;
1104 case GL_INTENSITY_SNORM
:
1105 return GL_INTENSITY8_SNORM
;
1114 * Convert an sRGB internal format to linear.
1117 _mesa_get_linear_internalformat(GLenum format
)
1129 case GL_SRGB8_ALPHA8
:
1133 return GL_LUMINANCE8
;
1135 case GL_SLUMINANCE_ALPHA
:
1136 return GL_LUMINANCE8_ALPHA8
;
1145 * Do error checking of format/type combinations for glReadPixels,
1146 * glDrawPixels and glTex[Sub]Image. Note that depending on the format
1147 * and type values, we may either generate GL_INVALID_OPERATION or
1150 * \param format pixel format.
1151 * \param type pixel type.
1153 * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
1156 _mesa_error_check_format_and_type(const struct gl_context
*ctx
,
1157 GLenum format
, GLenum type
)
1159 /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
1162 if (format
!= GL_COLOR_INDEX
&& format
!= GL_STENCIL_INDEX
) {
1163 return GL_INVALID_ENUM
;
1167 case GL_UNSIGNED_BYTE_3_3_2
:
1168 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1169 case GL_UNSIGNED_SHORT_5_6_5
:
1170 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1171 if (format
== GL_RGB
) {
1174 if (format
== GL_RGB_INTEGER_EXT
&&
1175 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1178 return GL_INVALID_OPERATION
;
1180 case GL_UNSIGNED_SHORT_4_4_4_4
:
1181 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1182 case GL_UNSIGNED_SHORT_5_5_5_1
:
1183 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1184 case GL_UNSIGNED_INT_8_8_8_8
:
1185 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1186 case GL_UNSIGNED_INT_10_10_10_2
:
1187 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1188 if (format
== GL_RGBA
||
1189 format
== GL_BGRA
||
1190 format
== GL_ABGR_EXT
) {
1193 if ((format
== GL_RGBA_INTEGER_EXT
|| format
== GL_BGRA_INTEGER_EXT
) &&
1194 ctx
->Extensions
.ARB_texture_rgb10_a2ui
) {
1197 return GL_INVALID_OPERATION
;
1199 case GL_UNSIGNED_INT_24_8
:
1200 if (!ctx
->Extensions
.EXT_packed_depth_stencil
) {
1201 return GL_INVALID_ENUM
;
1203 if (format
!= GL_DEPTH_STENCIL
) {
1204 return GL_INVALID_OPERATION
;
1208 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
1209 if (!ctx
->Extensions
.ARB_depth_buffer_float
) {
1210 return GL_INVALID_ENUM
;
1212 if (format
!= GL_DEPTH_STENCIL
) {
1213 return GL_INVALID_OPERATION
;
1217 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1218 if (!ctx
->Extensions
.EXT_packed_float
) {
1219 return GL_INVALID_ENUM
;
1221 if (format
!= GL_RGB
) {
1222 return GL_INVALID_OPERATION
;
1227 ; /* fall-through */
1230 /* now, for each format, check the type for compatibility */
1232 case GL_COLOR_INDEX
:
1233 case GL_STENCIL_INDEX
:
1237 case GL_UNSIGNED_BYTE
:
1239 case GL_UNSIGNED_SHORT
:
1241 case GL_UNSIGNED_INT
:
1245 return ctx
->Extensions
.ARB_half_float_pixel
1246 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1248 return GL_INVALID_ENUM
;
1255 #if 0 /* not legal! see table 3.6 of the 1.5 spec */
1259 case GL_LUMINANCE_ALPHA
:
1260 case GL_DEPTH_COMPONENT
:
1263 case GL_UNSIGNED_BYTE
:
1265 case GL_UNSIGNED_SHORT
:
1267 case GL_UNSIGNED_INT
:
1271 return ctx
->Extensions
.ARB_half_float_pixel
1272 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1274 return GL_INVALID_ENUM
;
1278 if (!ctx
->Extensions
.ARB_texture_rg
)
1279 return GL_INVALID_ENUM
;
1282 case GL_UNSIGNED_BYTE
:
1284 case GL_UNSIGNED_SHORT
:
1286 case GL_UNSIGNED_INT
:
1290 return ctx
->Extensions
.ARB_half_float_pixel
1291 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1293 return GL_INVALID_ENUM
;
1299 case GL_UNSIGNED_BYTE
:
1301 case GL_UNSIGNED_SHORT
:
1303 case GL_UNSIGNED_INT
:
1305 case GL_UNSIGNED_BYTE_3_3_2
:
1306 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1307 case GL_UNSIGNED_SHORT_5_6_5
:
1308 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1311 return ctx
->Extensions
.ARB_half_float_pixel
1312 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1313 case GL_UNSIGNED_INT_5_9_9_9_REV
:
1314 return ctx
->Extensions
.EXT_texture_shared_exponent
1315 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1316 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
1317 return ctx
->Extensions
.EXT_packed_float
1318 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1320 return GL_INVALID_ENUM
;
1325 /* NOTE: no packed types are supported with BGR. That's
1326 * intentional, according to the GL spec.
1329 case GL_UNSIGNED_BYTE
:
1331 case GL_UNSIGNED_SHORT
:
1333 case GL_UNSIGNED_INT
:
1337 return ctx
->Extensions
.ARB_half_float_pixel
1338 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1340 return GL_INVALID_ENUM
;
1348 case GL_UNSIGNED_BYTE
:
1350 case GL_UNSIGNED_SHORT
:
1352 case GL_UNSIGNED_INT
:
1354 case GL_UNSIGNED_SHORT_4_4_4_4
:
1355 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1356 case GL_UNSIGNED_SHORT_5_5_5_1
:
1357 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1358 case GL_UNSIGNED_INT_8_8_8_8
:
1359 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1360 case GL_UNSIGNED_INT_10_10_10_2
:
1361 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1364 return ctx
->Extensions
.ARB_half_float_pixel
1365 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1367 return GL_INVALID_ENUM
;
1371 if (!ctx
->Extensions
.MESA_ycbcr_texture
)
1372 return GL_INVALID_ENUM
;
1373 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
||
1374 type
== GL_UNSIGNED_SHORT_8_8_REV_MESA
)
1377 return GL_INVALID_OPERATION
;
1379 case GL_DEPTH_STENCIL_EXT
:
1380 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
1381 type
== GL_UNSIGNED_INT_24_8
)
1383 else if (ctx
->Extensions
.ARB_depth_buffer_float
&&
1384 type
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
)
1387 return GL_INVALID_ENUM
;
1391 if (!ctx
->Extensions
.ATI_envmap_bumpmap
)
1392 return GL_INVALID_ENUM
;
1395 case GL_UNSIGNED_BYTE
:
1397 case GL_UNSIGNED_SHORT
:
1399 case GL_UNSIGNED_INT
:
1403 return GL_INVALID_ENUM
;
1406 /* integer-valued formats */
1407 case GL_RED_INTEGER_EXT
:
1408 case GL_GREEN_INTEGER_EXT
:
1409 case GL_BLUE_INTEGER_EXT
:
1410 case GL_ALPHA_INTEGER_EXT
:
1414 case GL_UNSIGNED_BYTE
:
1416 case GL_UNSIGNED_SHORT
:
1418 case GL_UNSIGNED_INT
:
1419 return (ctx
->Version
>= 30 ||
1420 ctx
->Extensions
.EXT_texture_integer
)
1421 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1423 return GL_INVALID_ENUM
;
1426 case GL_RGB_INTEGER_EXT
:
1429 case GL_UNSIGNED_BYTE
:
1431 case GL_UNSIGNED_SHORT
:
1433 case GL_UNSIGNED_INT
:
1434 return (ctx
->Version
>= 30 ||
1435 ctx
->Extensions
.EXT_texture_integer
)
1436 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1437 case GL_UNSIGNED_BYTE_3_3_2
:
1438 case GL_UNSIGNED_BYTE_2_3_3_REV
:
1439 case GL_UNSIGNED_SHORT_5_6_5
:
1440 case GL_UNSIGNED_SHORT_5_6_5_REV
:
1441 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
1442 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1444 return GL_INVALID_ENUM
;
1447 case GL_BGR_INTEGER_EXT
:
1450 case GL_UNSIGNED_BYTE
:
1452 case GL_UNSIGNED_SHORT
:
1454 case GL_UNSIGNED_INT
:
1455 /* NOTE: no packed formats w/ BGR format */
1456 return (ctx
->Version
>= 30 ||
1457 ctx
->Extensions
.EXT_texture_integer
)
1458 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1460 return GL_INVALID_ENUM
;
1463 case GL_RGBA_INTEGER_EXT
:
1464 case GL_BGRA_INTEGER_EXT
:
1467 case GL_UNSIGNED_BYTE
:
1469 case GL_UNSIGNED_SHORT
:
1471 case GL_UNSIGNED_INT
:
1472 return (ctx
->Version
>= 30 ||
1473 ctx
->Extensions
.EXT_texture_integer
)
1474 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1475 case GL_UNSIGNED_SHORT_4_4_4_4
:
1476 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
1477 case GL_UNSIGNED_SHORT_5_5_5_1
:
1478 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
1479 case GL_UNSIGNED_INT_8_8_8_8
:
1480 case GL_UNSIGNED_INT_8_8_8_8_REV
:
1481 case GL_UNSIGNED_INT_10_10_10_2
:
1482 case GL_UNSIGNED_INT_2_10_10_10_REV
:
1483 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
1484 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1486 return GL_INVALID_ENUM
;
1489 case GL_LUMINANCE_INTEGER_EXT
:
1490 case GL_LUMINANCE_ALPHA_INTEGER_EXT
:
1493 case GL_UNSIGNED_BYTE
:
1495 case GL_UNSIGNED_SHORT
:
1497 case GL_UNSIGNED_INT
:
1498 return ctx
->Extensions
.EXT_texture_integer
1499 ? GL_NO_ERROR
: GL_INVALID_ENUM
;
1501 return GL_INVALID_ENUM
;
1505 return GL_INVALID_ENUM
;
1512 * Do error checking of format/type combinations for OpenGL ES glReadPixels
1513 * and glTex[Sub]Image.
1514 * \return error code, or GL_NO_ERROR.
1517 _mesa_es_error_check_format_and_type(GLenum format
, GLenum type
,
1518 unsigned dimensions
)
1520 GLboolean type_valid
= GL_TRUE
;
1525 case GL_LUMINANCE_ALPHA
:
1526 type_valid
= (type
== GL_UNSIGNED_BYTE
1528 || type
== GL_HALF_FLOAT_OES
);
1532 type_valid
= (type
== GL_UNSIGNED_BYTE
1533 || type
== GL_UNSIGNED_SHORT_5_6_5
1535 || type
== GL_HALF_FLOAT_OES
);
1539 type_valid
= (type
== GL_UNSIGNED_BYTE
1540 || type
== GL_UNSIGNED_SHORT_4_4_4_4
1541 || type
== GL_UNSIGNED_SHORT_5_5_5_1
1543 || type
== GL_HALF_FLOAT_OES
1544 || type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
1547 case GL_DEPTH_COMPONENT
:
1548 /* This format is filtered against invalid dimensionalities elsewhere.
1550 type_valid
= (type
== GL_UNSIGNED_SHORT
1551 || type
== GL_UNSIGNED_INT
);
1554 case GL_DEPTH_STENCIL
:
1555 /* This format is filtered against invalid dimensionalities elsewhere.
1557 type_valid
= (type
== GL_UNSIGNED_INT_24_8
);
1561 type_valid
= (type
== GL_UNSIGNED_BYTE
);
1563 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
1564 * the format does not appear to be allowed for 3D textures in OpenGL
1567 if (dimensions
!= 2)
1568 return GL_INVALID_VALUE
;
1573 return GL_INVALID_VALUE
;
1576 return type_valid
? GL_NO_ERROR
: GL_INVALID_OPERATION
;