2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (c) 2008-2009 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
31 #include "glformats.h"
32 #include "c11/threads.h"
33 #include "util/hash_table.h"
36 * Information about texture formats.
38 struct mesa_format_info
42 /** text name for debugging */
45 enum mesa_format_layout Layout
;
48 * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
49 * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
50 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
55 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
56 * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
64 uint8_t LuminanceBits
;
65 uint8_t IntensityBits
;
72 * To describe compressed formats. If not compressed, Width=Height=Depth=1.
74 uint8_t BlockWidth
, BlockHeight
, BlockDepth
;
75 uint8_t BytesPerBlock
;
78 mesa_array_format ArrayFormat
;
81 #include "format_info.h"
83 static const struct mesa_format_info
*
84 _mesa_get_format_info(mesa_format format
)
86 const struct mesa_format_info
*info
= &format_info
[format
];
87 STATIC_ASSERT(ARRAY_SIZE(format_info
) == MESA_FORMAT_COUNT
);
89 /* The MESA_FORMAT_* enums are sparse, don't return a format info
92 if (info
->Name
== MESA_FORMAT_NONE
&& format
!= MESA_FORMAT_NONE
)
95 assert(info
->Name
== format
);
100 /** Return string name of format (for debugging) */
102 _mesa_get_format_name(mesa_format format
)
104 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
107 return info
->StrName
;
113 * Return bytes needed to store a block of pixels in the given format.
114 * Normally, a block is 1x1 (a single pixel). But for compressed formats
115 * a block may be 4x4 or 8x4, etc.
117 * Note: return is signed, so as not to coerce math to unsigned. cf. fdo #37351
120 _mesa_get_format_bytes(mesa_format format
)
122 if (_mesa_format_is_mesa_array_format(format
)) {
123 return _mesa_array_format_get_type_size(format
) *
124 _mesa_array_format_get_num_channels(format
);
127 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
128 assert(info
->BytesPerBlock
);
129 assert(info
->BytesPerBlock
<= MAX_PIXEL_BYTES
||
130 _mesa_is_format_compressed(format
));
131 return info
->BytesPerBlock
;
136 * Return bits per component for the given format.
137 * \param format one of MESA_FORMAT_x
138 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
141 _mesa_get_format_bits(mesa_format format
, GLenum pname
)
143 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
147 case GL_TEXTURE_RED_SIZE
:
148 case GL_RENDERBUFFER_RED_SIZE_EXT
:
149 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
150 case GL_INTERNALFORMAT_RED_SIZE
:
151 return info
->RedBits
;
153 case GL_TEXTURE_GREEN_SIZE
:
154 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
155 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
156 case GL_INTERNALFORMAT_GREEN_SIZE
:
157 return info
->GreenBits
;
159 case GL_TEXTURE_BLUE_SIZE
:
160 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
161 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
162 case GL_INTERNALFORMAT_BLUE_SIZE
:
163 return info
->BlueBits
;
165 case GL_TEXTURE_ALPHA_SIZE
:
166 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
167 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
168 case GL_INTERNALFORMAT_ALPHA_SIZE
:
169 return info
->AlphaBits
;
170 case GL_TEXTURE_INTENSITY_SIZE
:
171 return info
->IntensityBits
;
172 case GL_TEXTURE_LUMINANCE_SIZE
:
173 return info
->LuminanceBits
;
177 case GL_TEXTURE_DEPTH_SIZE_ARB
:
178 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
179 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
180 case GL_INTERNALFORMAT_DEPTH_SIZE
:
181 return info
->DepthBits
;
182 case GL_STENCIL_BITS
:
183 case GL_TEXTURE_STENCIL_SIZE_EXT
:
184 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
185 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
186 case GL_INTERNALFORMAT_STENCIL_SIZE
:
187 return info
->StencilBits
;
189 _mesa_problem(NULL
, "bad pname in _mesa_get_format_bits()");
196 _mesa_get_format_max_bits(mesa_format format
)
198 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
199 unsigned int max
= MAX2(info
->RedBits
, info
->GreenBits
);
200 max
= MAX2(max
, info
->BlueBits
);
201 max
= MAX2(max
, info
->AlphaBits
);
202 max
= MAX2(max
, info
->LuminanceBits
);
203 max
= MAX2(max
, info
->IntensityBits
);
204 max
= MAX2(max
, info
->DepthBits
);
205 max
= MAX2(max
, info
->StencilBits
);
211 * Return the layout type of the given format.
213 extern enum mesa_format_layout
214 _mesa_get_format_layout(mesa_format format
)
216 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
222 * Return the data type (or more specifically, the data representation)
223 * for the given format.
224 * The return value will be one of:
225 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
226 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
227 * GL_UNSIGNED_INT = an ordinary unsigned integer
228 * GL_INT = an ordinary signed integer
229 * GL_FLOAT = an ordinary float
232 _mesa_get_format_datatype(mesa_format format
)
234 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
235 return info
->DataType
;
239 get_base_format_for_array_format(mesa_array_format format
)
244 switch (_mesa_array_format_get_base_format(format
)) {
245 case MESA_ARRAY_FORMAT_BASE_FORMAT_DEPTH
:
246 return GL_DEPTH_COMPONENT
;
247 case MESA_ARRAY_FORMAT_BASE_FORMAT_STENCIL
:
248 return GL_STENCIL_INDEX
;
249 case MESA_ARRAY_FORMAT_BASE_FORMAT_RGBA_VARIANTS
:
253 _mesa_array_format_get_swizzle(format
, swizzle
);
254 num_channels
= _mesa_array_format_get_num_channels(format
);
256 switch (num_channels
) {
258 /* FIXME: RGBX formats have 4 channels, but their base format is GL_RGB.
259 * This is not really a problem for now because we only create array
260 * formats from GL format/type combinations, and these cannot specify
267 if (swizzle
[0] == 0 &&
271 return GL_LUMINANCE_ALPHA
;
272 if (swizzle
[0] == 1 &&
276 return GL_LUMINANCE_ALPHA
;
277 if (swizzle
[0] == 0 &&
282 if (swizzle
[0] == 1 &&
289 if (swizzle
[0] == 0 &&
294 if (swizzle
[0] == 0 &&
299 if (swizzle
[0] <= MESA_FORMAT_SWIZZLE_W
)
301 if (swizzle
[1] <= MESA_FORMAT_SWIZZLE_W
)
303 if (swizzle
[2] <= MESA_FORMAT_SWIZZLE_W
)
305 if (swizzle
[3] <= MESA_FORMAT_SWIZZLE_W
)
310 unreachable("Unsupported format");
314 * Return the basic format for the given type. The result will be one of
315 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
316 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
317 * This functions accepts a mesa_format or a mesa_array_format.
320 _mesa_get_format_base_format(uint32_t format
)
322 if (!_mesa_format_is_mesa_array_format(format
)) {
323 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
324 return info
->BaseFormat
;
326 return get_base_format_for_array_format(format
);
332 * Return the block size (in pixels) for the given format. Normally
333 * the block size is 1x1. But compressed formats will have block sizes
334 * of 4x4 or 8x4 pixels, etc.
335 * \param bw returns block width in pixels
336 * \param bh returns block height in pixels
339 _mesa_get_format_block_size(mesa_format format
,
340 unsigned int *bw
, unsigned int *bh
)
342 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
343 /* Use _mesa_get_format_block_size_3d() for 3D blocks. */
344 assert(info
->BlockDepth
== 1);
346 *bw
= info
->BlockWidth
;
347 *bh
= info
->BlockHeight
;
352 * Return the block size (in pixels) for the given format. Normally
353 * the block size is 1x1x1. But compressed formats will have block
354 * sizes of 4x4x4, 3x3x3 pixels, etc.
355 * \param bw returns block width in pixels
356 * \param bh returns block height in pixels
357 * \param bd returns block depth in pixels
360 _mesa_get_format_block_size_3d(mesa_format format
,
365 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
366 *bw
= info
->BlockWidth
;
367 *bh
= info
->BlockHeight
;
368 *bd
= info
->BlockDepth
;
373 * Returns the an array of four numbers representing the transformation
374 * from the RGBA or SZ colorspace to the given format. For array formats,
375 * the i'th RGBA component is given by:
377 * if (swizzle[i] <= MESA_FORMAT_SWIZZLE_W)
378 * comp = data[swizzle[i]];
379 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ZERO)
381 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ONE)
383 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_NONE)
384 * // data does not contain a channel of this format
386 * For packed formats, the swizzle gives the number of components left of
387 * the least significant bit.
389 * Compressed formats have no swizzle.
392 _mesa_get_format_swizzle(mesa_format format
, uint8_t swizzle_out
[4])
394 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
395 memcpy(swizzle_out
, info
->Swizzle
, sizeof(info
->Swizzle
));
399 _mesa_array_format_flip_channels(mesa_array_format format
)
404 num_channels
= _mesa_array_format_get_num_channels(format
);
405 _mesa_array_format_get_swizzle(format
, swizzle
);
407 if (num_channels
== 1)
410 if (num_channels
== 2) {
411 /* Assert that the swizzle makes sense for 2 channels */
412 for (unsigned i
= 0; i
< 4; i
++)
413 assert(swizzle
[i
] != 2 && swizzle
[i
] != 3);
415 static const uint8_t flip_xy
[6] = { 1, 0, 2, 3, 4, 5 };
416 _mesa_array_format_set_swizzle(&format
,
417 flip_xy
[swizzle
[0]], flip_xy
[swizzle
[1]],
418 flip_xy
[swizzle
[2]], flip_xy
[swizzle
[3]]);
422 if (num_channels
== 4) {
423 static const uint8_t flip
[6] = { 3, 2, 1, 0, 4, 5 };
424 _mesa_array_format_set_swizzle(&format
,
425 flip
[swizzle
[0]], flip
[swizzle
[1]],
426 flip
[swizzle
[2]], flip
[swizzle
[3]]);
430 unreachable("Invalid array format");
434 _mesa_format_to_array_format(mesa_format format
)
436 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
437 #if UTIL_ARCH_BIG_ENDIAN
438 if (info
->ArrayFormat
&& info
->Layout
== MESA_FORMAT_LAYOUT_PACKED
)
439 return _mesa_array_format_flip_channels(info
->ArrayFormat
);
442 return info
->ArrayFormat
;
445 static struct hash_table
*format_array_format_table
;
446 static once_flag format_array_format_table_exists
= ONCE_FLAG_INIT
;
449 format_array_format_table_destroy(void)
451 _mesa_hash_table_destroy(format_array_format_table
, NULL
);
455 array_formats_equal(const void *a
, const void *b
)
457 return (intptr_t)a
== (intptr_t)b
;
461 format_array_format_table_init(void)
463 const struct mesa_format_info
*info
;
464 mesa_array_format array_format
;
467 format_array_format_table
= _mesa_hash_table_create(NULL
, NULL
,
468 array_formats_equal
);
470 if (!format_array_format_table
) {
471 _mesa_error_no_memory(__func__
);
475 for (f
= 1; f
< MESA_FORMAT_COUNT
; ++f
) {
476 info
= _mesa_get_format_info(f
);
477 if (!info
|| !info
->ArrayFormat
)
480 /* All sRGB formats should have an equivalent UNORM format, and that's
481 * the one we want in the table.
483 if (_mesa_is_format_srgb(f
))
486 #if UTIL_ARCH_LITTLE_ENDIAN
487 array_format
= info
->ArrayFormat
;
489 array_format
= _mesa_array_format_flip_channels(info
->ArrayFormat
);
492 _mesa_hash_table_insert_pre_hashed(format_array_format_table
,
494 (void *)(intptr_t)array_format
,
495 (void *)(intptr_t)f
);
498 atexit(format_array_format_table_destroy
);
502 _mesa_format_from_array_format(uint32_t array_format
)
504 struct hash_entry
*entry
;
506 assert(_mesa_format_is_mesa_array_format(array_format
));
508 call_once(&format_array_format_table_exists
, format_array_format_table_init
);
510 if (!format_array_format_table
) {
511 static const once_flag once_flag_init
= ONCE_FLAG_INIT
;
512 format_array_format_table_exists
= once_flag_init
;
513 return MESA_FORMAT_NONE
;
516 entry
= _mesa_hash_table_search_pre_hashed(format_array_format_table
,
518 (void *)(intptr_t)array_format
);
520 return (intptr_t)entry
->data
;
522 return MESA_FORMAT_NONE
;
525 /** Is the given format a compressed format? */
527 _mesa_is_format_compressed(mesa_format format
)
529 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
530 return info
->BlockWidth
> 1 || info
->BlockHeight
> 1;
535 * Determine if the given format represents a packed depth/stencil buffer.
538 _mesa_is_format_packed_depth_stencil(mesa_format format
)
540 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
542 return info
->BaseFormat
== GL_DEPTH_STENCIL
;
547 * Is the given format a signed/unsigned integer color format?
550 _mesa_is_format_integer_color(mesa_format format
)
552 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
553 return (info
->DataType
== GL_INT
|| info
->DataType
== GL_UNSIGNED_INT
) &&
554 info
->BaseFormat
!= GL_DEPTH_COMPONENT
&&
555 info
->BaseFormat
!= GL_DEPTH_STENCIL
&&
556 info
->BaseFormat
!= GL_STENCIL_INDEX
;
561 * Is the given format an unsigned integer format?
564 _mesa_is_format_unsigned(mesa_format format
)
566 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
567 return _mesa_is_type_unsigned(info
->DataType
);
572 * Does the given format store signed values?
575 _mesa_is_format_signed(mesa_format format
)
577 if (format
== MESA_FORMAT_R11G11B10_FLOAT
||
578 format
== MESA_FORMAT_R9G9B9E5_FLOAT
) {
579 /* these packed float formats only store unsigned values */
583 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
584 return (info
->DataType
== GL_SIGNED_NORMALIZED
||
585 info
->DataType
== GL_INT
||
586 info
->DataType
== GL_FLOAT
);
591 * Is the given format an integer format?
594 _mesa_is_format_integer(mesa_format format
)
596 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
597 return (info
->DataType
== GL_INT
|| info
->DataType
== GL_UNSIGNED_INT
);
602 * Return true if the given format is a color format.
605 _mesa_is_format_color_format(mesa_format format
)
607 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
608 switch (info
->BaseFormat
) {
609 case GL_DEPTH_COMPONENT
:
610 case GL_STENCIL_INDEX
:
611 case GL_DEPTH_STENCIL
:
619 _mesa_is_format_srgb(mesa_format format
)
621 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
622 return info
->IsSRGBFormat
;
626 * Return TRUE if format is an ETC2 compressed format specified
627 * by GL_ARB_ES3_compatibility.
630 _mesa_is_format_etc2(mesa_format format
)
633 case MESA_FORMAT_ETC2_RGB8
:
634 case MESA_FORMAT_ETC2_SRGB8
:
635 case MESA_FORMAT_ETC2_RGBA8_EAC
:
636 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC
:
637 case MESA_FORMAT_ETC2_R11_EAC
:
638 case MESA_FORMAT_ETC2_RG11_EAC
:
639 case MESA_FORMAT_ETC2_SIGNED_R11_EAC
:
640 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC
:
641 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1
:
642 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1
:
651 * Return TRUE if format is an ASTC 2D compressed format.
654 _mesa_is_format_astc_2d(mesa_format format
)
657 case MESA_FORMAT_RGBA_ASTC_4x4
:
658 case MESA_FORMAT_RGBA_ASTC_5x4
:
659 case MESA_FORMAT_RGBA_ASTC_5x5
:
660 case MESA_FORMAT_RGBA_ASTC_6x5
:
661 case MESA_FORMAT_RGBA_ASTC_6x6
:
662 case MESA_FORMAT_RGBA_ASTC_8x5
:
663 case MESA_FORMAT_RGBA_ASTC_8x6
:
664 case MESA_FORMAT_RGBA_ASTC_8x8
:
665 case MESA_FORMAT_RGBA_ASTC_10x5
:
666 case MESA_FORMAT_RGBA_ASTC_10x6
:
667 case MESA_FORMAT_RGBA_ASTC_10x8
:
668 case MESA_FORMAT_RGBA_ASTC_10x10
:
669 case MESA_FORMAT_RGBA_ASTC_12x10
:
670 case MESA_FORMAT_RGBA_ASTC_12x12
:
671 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4
:
672 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4
:
673 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5
:
674 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5
:
675 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6
:
676 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5
:
677 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6
:
678 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8
:
679 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5
:
680 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6
:
681 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8
:
682 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10
:
683 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10
:
684 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12
:
693 * If the given format is a compressed format, return a corresponding
694 * uncompressed format.
697 _mesa_get_uncompressed_format(mesa_format format
)
700 case MESA_FORMAT_RGB_FXT1
:
701 return MESA_FORMAT_BGR_UNORM8
;
702 case MESA_FORMAT_RGBA_FXT1
:
703 return MESA_FORMAT_A8B8G8R8_UNORM
;
704 case MESA_FORMAT_RGB_DXT1
:
705 case MESA_FORMAT_SRGB_DXT1
:
706 return MESA_FORMAT_BGR_UNORM8
;
707 case MESA_FORMAT_RGBA_DXT1
:
708 case MESA_FORMAT_SRGBA_DXT1
:
709 return MESA_FORMAT_A8B8G8R8_UNORM
;
710 case MESA_FORMAT_RGBA_DXT3
:
711 case MESA_FORMAT_SRGBA_DXT3
:
712 return MESA_FORMAT_A8B8G8R8_UNORM
;
713 case MESA_FORMAT_RGBA_DXT5
:
714 case MESA_FORMAT_SRGBA_DXT5
:
715 return MESA_FORMAT_A8B8G8R8_UNORM
;
716 case MESA_FORMAT_R_RGTC1_UNORM
:
717 return MESA_FORMAT_R_UNORM8
;
718 case MESA_FORMAT_R_RGTC1_SNORM
:
719 return MESA_FORMAT_R_SNORM8
;
720 case MESA_FORMAT_RG_RGTC2_UNORM
:
721 return MESA_FORMAT_RG_UNORM8
;
722 case MESA_FORMAT_RG_RGTC2_SNORM
:
723 return MESA_FORMAT_RG_SNORM8
;
724 case MESA_FORMAT_L_LATC1_UNORM
:
725 return MESA_FORMAT_L_UNORM8
;
726 case MESA_FORMAT_L_LATC1_SNORM
:
727 return MESA_FORMAT_L_SNORM8
;
728 case MESA_FORMAT_LA_LATC2_UNORM
:
729 return MESA_FORMAT_LA_UNORM8
;
730 case MESA_FORMAT_LA_LATC2_SNORM
:
731 return MESA_FORMAT_LA_SNORM8
;
732 case MESA_FORMAT_ETC1_RGB8
:
733 case MESA_FORMAT_ETC2_RGB8
:
734 case MESA_FORMAT_ETC2_SRGB8
:
735 case MESA_FORMAT_ATC_RGB
:
736 return MESA_FORMAT_BGR_UNORM8
;
737 case MESA_FORMAT_ETC2_RGBA8_EAC
:
738 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC
:
739 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1
:
740 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1
:
741 case MESA_FORMAT_ATC_RGBA_EXPLICIT
:
742 case MESA_FORMAT_ATC_RGBA_INTERPOLATED
:
743 return MESA_FORMAT_A8B8G8R8_UNORM
;
744 case MESA_FORMAT_ETC2_R11_EAC
:
745 case MESA_FORMAT_ETC2_SIGNED_R11_EAC
:
746 return MESA_FORMAT_R_UNORM16
;
747 case MESA_FORMAT_ETC2_RG11_EAC
:
748 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC
:
749 return MESA_FORMAT_RG_UNORM16
;
750 case MESA_FORMAT_BPTC_RGBA_UNORM
:
751 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM
:
752 return MESA_FORMAT_A8B8G8R8_UNORM
;
753 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT
:
754 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT
:
755 return MESA_FORMAT_RGB_FLOAT32
;
757 assert(!_mesa_is_format_compressed(format
));
764 _mesa_format_num_components(mesa_format format
)
766 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
767 return ((info
->RedBits
> 0) +
768 (info
->GreenBits
> 0) +
769 (info
->BlueBits
> 0) +
770 (info
->AlphaBits
> 0) +
771 (info
->LuminanceBits
> 0) +
772 (info
->IntensityBits
> 0) +
773 (info
->DepthBits
> 0) +
774 (info
->StencilBits
> 0));
779 * Returns true if a color format has data stored in the R/G/B/A channels,
780 * given an index from 0 to 3.
783 _mesa_format_has_color_component(mesa_format format
, int component
)
785 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
787 assert(info
->BaseFormat
!= GL_DEPTH_COMPONENT
&&
788 info
->BaseFormat
!= GL_DEPTH_STENCIL
&&
789 info
->BaseFormat
!= GL_STENCIL_INDEX
);
793 return (info
->RedBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
795 return (info
->GreenBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
797 return (info
->BlueBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
799 return (info
->AlphaBits
+ info
->IntensityBits
) > 0;
801 assert(!"Invalid color component: must be 0..3");
808 * Return number of bytes needed to store an image of the given size
809 * in the given format.
812 _mesa_format_image_size(mesa_format format
, int width
,
813 int height
, int depth
)
815 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
817 /* Strictly speaking, a conditional isn't needed here */
818 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1 || info
->BlockDepth
> 1) {
819 /* compressed format (2D only for now) */
820 const uint32_t bw
= info
->BlockWidth
;
821 const uint32_t bh
= info
->BlockHeight
;
822 const uint32_t bd
= info
->BlockDepth
;
823 const uint32_t wblocks
= (width
+ bw
- 1) / bw
;
824 const uint32_t hblocks
= (height
+ bh
- 1) / bh
;
825 const uint32_t dblocks
= (depth
+ bd
- 1) / bd
;
826 sz
= wblocks
* hblocks
* dblocks
* info
->BytesPerBlock
;
829 sz
= width
* height
* depth
* info
->BytesPerBlock
;
836 * Same as _mesa_format_image_size() but returns a 64-bit value to
837 * accommodate very large textures.
840 _mesa_format_image_size64(mesa_format format
, int width
,
841 int height
, int depth
)
843 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
845 /* Strictly speaking, a conditional isn't needed here */
846 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1 || info
->BlockDepth
> 1) {
847 /* compressed format (2D only for now) */
848 const uint64_t bw
= info
->BlockWidth
;
849 const uint64_t bh
= info
->BlockHeight
;
850 const uint64_t bd
= info
->BlockDepth
;
851 const uint64_t wblocks
= (width
+ bw
- 1) / bw
;
852 const uint64_t hblocks
= (height
+ bh
- 1) / bh
;
853 const uint64_t dblocks
= (depth
+ bd
- 1) / bd
;
854 sz
= wblocks
* hblocks
* dblocks
* info
->BytesPerBlock
;
857 sz
= ((uint64_t) width
* (uint64_t) height
*
858 (uint64_t) depth
* info
->BytesPerBlock
);
866 _mesa_format_row_stride(mesa_format format
, int width
)
868 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
869 /* Strictly speaking, a conditional isn't needed here */
870 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1) {
871 /* compressed format */
872 const uint32_t bw
= info
->BlockWidth
;
873 const uint32_t wblocks
= (width
+ bw
- 1) / bw
;
874 const int32_t stride
= wblocks
* info
->BytesPerBlock
;
878 const int32_t stride
= width
* info
->BytesPerBlock
;
886 * Return datatype and number of components per texel for the given
887 * uncompressed mesa_format. Only used for mipmap generation code.
890 _mesa_uncompressed_format_to_type_and_comps(mesa_format format
,
891 GLenum
*datatype
, GLuint
*comps
)
894 case MESA_FORMAT_A8B8G8R8_UNORM
:
895 case MESA_FORMAT_R8G8B8A8_UNORM
:
896 case MESA_FORMAT_B8G8R8A8_UNORM
:
897 case MESA_FORMAT_A8R8G8B8_UNORM
:
898 case MESA_FORMAT_X8B8G8R8_UNORM
:
899 case MESA_FORMAT_R8G8B8X8_UNORM
:
900 case MESA_FORMAT_B8G8R8X8_UNORM
:
901 case MESA_FORMAT_X8R8G8B8_UNORM
:
902 case MESA_FORMAT_A8B8G8R8_UINT
:
903 case MESA_FORMAT_R8G8B8A8_UINT
:
904 case MESA_FORMAT_B8G8R8A8_UINT
:
905 case MESA_FORMAT_A8R8G8B8_UINT
:
906 *datatype
= GL_UNSIGNED_BYTE
;
909 case MESA_FORMAT_BGR_UNORM8
:
910 case MESA_FORMAT_RGB_UNORM8
:
911 *datatype
= GL_UNSIGNED_BYTE
;
914 case MESA_FORMAT_B5G6R5_UNORM
:
915 case MESA_FORMAT_R5G6B5_UNORM
:
916 case MESA_FORMAT_B5G6R5_UINT
:
917 case MESA_FORMAT_R5G6B5_UINT
:
918 *datatype
= GL_UNSIGNED_SHORT_5_6_5
;
922 case MESA_FORMAT_B4G4R4A4_UNORM
:
923 case MESA_FORMAT_A4R4G4B4_UNORM
:
924 case MESA_FORMAT_B4G4R4X4_UNORM
:
925 case MESA_FORMAT_B4G4R4A4_UINT
:
926 case MESA_FORMAT_A4R4G4B4_UINT
:
927 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
931 case MESA_FORMAT_B5G5R5A1_UNORM
:
932 case MESA_FORMAT_A1R5G5B5_UNORM
:
933 case MESA_FORMAT_B5G5R5X1_UNORM
:
934 case MESA_FORMAT_B5G5R5A1_UINT
:
935 case MESA_FORMAT_A1R5G5B5_UINT
:
936 *datatype
= GL_UNSIGNED_SHORT_1_5_5_5_REV
;
940 case MESA_FORMAT_B10G10R10A2_UNORM
:
941 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
945 case MESA_FORMAT_A1B5G5R5_UNORM
:
946 case MESA_FORMAT_A1B5G5R5_UINT
:
947 case MESA_FORMAT_X1B5G5R5_UNORM
:
948 *datatype
= GL_UNSIGNED_SHORT_5_5_5_1
;
952 case MESA_FORMAT_L4A4_UNORM
:
953 *datatype
= MESA_UNSIGNED_BYTE_4_4
;
957 case MESA_FORMAT_LA_UNORM8
:
958 case MESA_FORMAT_RG_UNORM8
:
959 *datatype
= GL_UNSIGNED_BYTE
;
963 case MESA_FORMAT_LA_UNORM16
:
964 case MESA_FORMAT_RG_UNORM16
:
965 *datatype
= GL_UNSIGNED_SHORT
;
969 case MESA_FORMAT_R_UNORM16
:
970 case MESA_FORMAT_A_UNORM16
:
971 case MESA_FORMAT_L_UNORM16
:
972 case MESA_FORMAT_I_UNORM16
:
973 *datatype
= GL_UNSIGNED_SHORT
;
977 case MESA_FORMAT_R3G3B2_UNORM
:
978 case MESA_FORMAT_R3G3B2_UINT
:
979 *datatype
= GL_UNSIGNED_BYTE_2_3_3_REV
;
982 case MESA_FORMAT_A4B4G4R4_UNORM
:
983 case MESA_FORMAT_A4B4G4R4_UINT
:
984 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
988 case MESA_FORMAT_R4G4B4A4_UNORM
:
989 case MESA_FORMAT_R4G4B4A4_UINT
:
990 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
993 case MESA_FORMAT_R5G5B5A1_UNORM
:
994 case MESA_FORMAT_R5G5B5A1_UINT
:
995 *datatype
= GL_UNSIGNED_SHORT_1_5_5_5_REV
;
998 case MESA_FORMAT_A2B10G10R10_UNORM
:
999 case MESA_FORMAT_A2B10G10R10_UINT
:
1000 *datatype
= GL_UNSIGNED_INT_10_10_10_2
;
1003 case MESA_FORMAT_A2R10G10B10_UNORM
:
1004 case MESA_FORMAT_A2R10G10B10_UINT
:
1005 *datatype
= GL_UNSIGNED_INT_10_10_10_2
;
1009 case MESA_FORMAT_B2G3R3_UNORM
:
1010 case MESA_FORMAT_B2G3R3_UINT
:
1011 *datatype
= GL_UNSIGNED_BYTE_3_3_2
;
1015 case MESA_FORMAT_A_UNORM8
:
1016 case MESA_FORMAT_L_UNORM8
:
1017 case MESA_FORMAT_I_UNORM8
:
1018 case MESA_FORMAT_R_UNORM8
:
1019 case MESA_FORMAT_S_UINT8
:
1020 *datatype
= GL_UNSIGNED_BYTE
;
1024 case MESA_FORMAT_YCBCR
:
1025 case MESA_FORMAT_YCBCR_REV
:
1026 *datatype
= GL_UNSIGNED_SHORT
;
1030 case MESA_FORMAT_S8_UINT_Z24_UNORM
:
1031 *datatype
= GL_UNSIGNED_INT_24_8_MESA
;
1035 case MESA_FORMAT_Z24_UNORM_S8_UINT
:
1036 *datatype
= GL_UNSIGNED_INT_8_24_REV_MESA
;
1040 case MESA_FORMAT_Z_UNORM16
:
1041 *datatype
= GL_UNSIGNED_SHORT
;
1045 case MESA_FORMAT_Z24_UNORM_X8_UINT
:
1046 *datatype
= GL_UNSIGNED_INT
;
1050 case MESA_FORMAT_X8_UINT_Z24_UNORM
:
1051 *datatype
= GL_UNSIGNED_INT
;
1055 case MESA_FORMAT_Z_UNORM32
:
1056 *datatype
= GL_UNSIGNED_INT
;
1060 case MESA_FORMAT_Z_FLOAT32
:
1061 *datatype
= GL_FLOAT
;
1065 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT
:
1066 *datatype
= GL_FLOAT_32_UNSIGNED_INT_24_8_REV
;
1070 case MESA_FORMAT_R_SNORM8
:
1071 case MESA_FORMAT_A_SNORM8
:
1072 case MESA_FORMAT_L_SNORM8
:
1073 case MESA_FORMAT_I_SNORM8
:
1074 *datatype
= GL_BYTE
;
1077 case MESA_FORMAT_RG_SNORM8
:
1078 case MESA_FORMAT_LA_SNORM8
:
1079 *datatype
= GL_BYTE
;
1082 case MESA_FORMAT_A8B8G8R8_SNORM
:
1083 case MESA_FORMAT_R8G8B8A8_SNORM
:
1084 case MESA_FORMAT_X8B8G8R8_SNORM
:
1085 *datatype
= GL_BYTE
;
1089 case MESA_FORMAT_RGBA_UNORM16
:
1090 *datatype
= GL_UNSIGNED_SHORT
;
1094 case MESA_FORMAT_R_SNORM16
:
1095 case MESA_FORMAT_A_SNORM16
:
1096 case MESA_FORMAT_L_SNORM16
:
1097 case MESA_FORMAT_I_SNORM16
:
1098 *datatype
= GL_SHORT
;
1101 case MESA_FORMAT_RG_SNORM16
:
1102 case MESA_FORMAT_LA_SNORM16
:
1103 *datatype
= GL_SHORT
;
1106 case MESA_FORMAT_RGB_SNORM16
:
1107 *datatype
= GL_SHORT
;
1110 case MESA_FORMAT_RGBA_SNORM16
:
1111 *datatype
= GL_SHORT
;
1115 case MESA_FORMAT_BGR_SRGB8
:
1116 *datatype
= GL_UNSIGNED_BYTE
;
1119 case MESA_FORMAT_A8B8G8R8_SRGB
:
1120 case MESA_FORMAT_B8G8R8A8_SRGB
:
1121 case MESA_FORMAT_A8R8G8B8_SRGB
:
1122 case MESA_FORMAT_R8G8B8A8_SRGB
:
1123 *datatype
= GL_UNSIGNED_BYTE
;
1126 case MESA_FORMAT_L_SRGB8
:
1127 case MESA_FORMAT_R_SRGB8
:
1128 *datatype
= GL_UNSIGNED_BYTE
;
1131 case MESA_FORMAT_LA_SRGB8
:
1132 *datatype
= GL_UNSIGNED_BYTE
;
1136 case MESA_FORMAT_RGBA_FLOAT32
:
1137 *datatype
= GL_FLOAT
;
1140 case MESA_FORMAT_RGBA_FLOAT16
:
1141 *datatype
= GL_HALF_FLOAT_ARB
;
1144 case MESA_FORMAT_RGB_FLOAT32
:
1145 *datatype
= GL_FLOAT
;
1148 case MESA_FORMAT_RGB_FLOAT16
:
1149 *datatype
= GL_HALF_FLOAT_ARB
;
1152 case MESA_FORMAT_LA_FLOAT32
:
1153 case MESA_FORMAT_RG_FLOAT32
:
1154 *datatype
= GL_FLOAT
;
1157 case MESA_FORMAT_LA_FLOAT16
:
1158 case MESA_FORMAT_RG_FLOAT16
:
1159 *datatype
= GL_HALF_FLOAT_ARB
;
1162 case MESA_FORMAT_A_FLOAT32
:
1163 case MESA_FORMAT_L_FLOAT32
:
1164 case MESA_FORMAT_I_FLOAT32
:
1165 case MESA_FORMAT_R_FLOAT32
:
1166 *datatype
= GL_FLOAT
;
1169 case MESA_FORMAT_A_FLOAT16
:
1170 case MESA_FORMAT_L_FLOAT16
:
1171 case MESA_FORMAT_I_FLOAT16
:
1172 case MESA_FORMAT_R_FLOAT16
:
1173 *datatype
= GL_HALF_FLOAT_ARB
;
1177 case MESA_FORMAT_A_UINT8
:
1178 case MESA_FORMAT_L_UINT8
:
1179 case MESA_FORMAT_I_UINT8
:
1180 *datatype
= GL_UNSIGNED_BYTE
;
1183 case MESA_FORMAT_LA_UINT8
:
1184 *datatype
= GL_UNSIGNED_BYTE
;
1188 case MESA_FORMAT_A_UINT16
:
1189 case MESA_FORMAT_L_UINT16
:
1190 case MESA_FORMAT_I_UINT16
:
1191 *datatype
= GL_UNSIGNED_SHORT
;
1194 case MESA_FORMAT_LA_UINT16
:
1195 *datatype
= GL_UNSIGNED_SHORT
;
1198 case MESA_FORMAT_A_UINT32
:
1199 case MESA_FORMAT_L_UINT32
:
1200 case MESA_FORMAT_I_UINT32
:
1201 *datatype
= GL_UNSIGNED_INT
;
1204 case MESA_FORMAT_LA_UINT32
:
1205 *datatype
= GL_UNSIGNED_INT
;
1208 case MESA_FORMAT_A_SINT8
:
1209 case MESA_FORMAT_L_SINT8
:
1210 case MESA_FORMAT_I_SINT8
:
1211 *datatype
= GL_BYTE
;
1214 case MESA_FORMAT_LA_SINT8
:
1215 *datatype
= GL_BYTE
;
1219 case MESA_FORMAT_A_SINT16
:
1220 case MESA_FORMAT_L_SINT16
:
1221 case MESA_FORMAT_I_SINT16
:
1222 *datatype
= GL_SHORT
;
1225 case MESA_FORMAT_LA_SINT16
:
1226 *datatype
= GL_SHORT
;
1230 case MESA_FORMAT_A_SINT32
:
1231 case MESA_FORMAT_L_SINT32
:
1232 case MESA_FORMAT_I_SINT32
:
1236 case MESA_FORMAT_LA_SINT32
:
1241 case MESA_FORMAT_R_SINT8
:
1242 *datatype
= GL_BYTE
;
1245 case MESA_FORMAT_RG_SINT8
:
1246 *datatype
= GL_BYTE
;
1249 case MESA_FORMAT_RGB_SINT8
:
1250 *datatype
= GL_BYTE
;
1253 case MESA_FORMAT_RGBA_SINT8
:
1254 *datatype
= GL_BYTE
;
1257 case MESA_FORMAT_R_SINT16
:
1258 *datatype
= GL_SHORT
;
1261 case MESA_FORMAT_RG_SINT16
:
1262 *datatype
= GL_SHORT
;
1265 case MESA_FORMAT_RGB_SINT16
:
1266 *datatype
= GL_SHORT
;
1269 case MESA_FORMAT_RGBA_SINT16
:
1270 *datatype
= GL_SHORT
;
1273 case MESA_FORMAT_R_SINT32
:
1277 case MESA_FORMAT_RG_SINT32
:
1281 case MESA_FORMAT_RGB_SINT32
:
1285 case MESA_FORMAT_RGBA_SINT32
:
1291 * \name Non-normalized unsigned integer formats.
1293 case MESA_FORMAT_R_UINT8
:
1294 *datatype
= GL_UNSIGNED_BYTE
;
1297 case MESA_FORMAT_RG_UINT8
:
1298 *datatype
= GL_UNSIGNED_BYTE
;
1301 case MESA_FORMAT_RGB_UINT8
:
1302 *datatype
= GL_UNSIGNED_BYTE
;
1305 case MESA_FORMAT_R_UINT16
:
1306 *datatype
= GL_UNSIGNED_SHORT
;
1309 case MESA_FORMAT_RG_UINT16
:
1310 *datatype
= GL_UNSIGNED_SHORT
;
1313 case MESA_FORMAT_RGB_UINT16
:
1314 *datatype
= GL_UNSIGNED_SHORT
;
1317 case MESA_FORMAT_RGBA_UINT16
:
1318 *datatype
= GL_UNSIGNED_SHORT
;
1321 case MESA_FORMAT_R_UINT32
:
1322 *datatype
= GL_UNSIGNED_INT
;
1325 case MESA_FORMAT_RG_UINT32
:
1326 *datatype
= GL_UNSIGNED_INT
;
1329 case MESA_FORMAT_RGB_UINT32
:
1330 *datatype
= GL_UNSIGNED_INT
;
1333 case MESA_FORMAT_RGBA_UINT32
:
1334 *datatype
= GL_UNSIGNED_INT
;
1338 case MESA_FORMAT_R9G9B9E5_FLOAT
:
1339 *datatype
= GL_UNSIGNED_INT_5_9_9_9_REV
;
1343 case MESA_FORMAT_R11G11B10_FLOAT
:
1344 *datatype
= GL_UNSIGNED_INT_10F_11F_11F_REV
;
1348 case MESA_FORMAT_B10G10R10A2_UINT
:
1349 case MESA_FORMAT_R10G10B10A2_UINT
:
1350 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1354 case MESA_FORMAT_R8G8B8X8_SRGB
:
1355 case MESA_FORMAT_X8B8G8R8_SRGB
:
1356 case MESA_FORMAT_RGBX_UINT8
:
1357 *datatype
= GL_UNSIGNED_BYTE
;
1361 case MESA_FORMAT_R8G8B8X8_SNORM
:
1362 case MESA_FORMAT_RGBX_SINT8
:
1363 *datatype
= GL_BYTE
;
1367 case MESA_FORMAT_B10G10R10X2_UNORM
:
1368 case MESA_FORMAT_R10G10B10X2_UNORM
:
1369 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1373 case MESA_FORMAT_RGBX_UNORM16
:
1374 case MESA_FORMAT_RGBX_UINT16
:
1375 *datatype
= GL_UNSIGNED_SHORT
;
1379 case MESA_FORMAT_RGBX_SNORM16
:
1380 case MESA_FORMAT_RGBX_SINT16
:
1381 *datatype
= GL_SHORT
;
1385 case MESA_FORMAT_RGBX_FLOAT16
:
1386 *datatype
= GL_HALF_FLOAT
;
1390 case MESA_FORMAT_RGBX_FLOAT32
:
1391 *datatype
= GL_FLOAT
;
1395 case MESA_FORMAT_RGBX_UINT32
:
1396 *datatype
= GL_UNSIGNED_INT
;
1400 case MESA_FORMAT_RGBX_SINT32
:
1405 case MESA_FORMAT_R10G10B10A2_UNORM
:
1406 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1410 case MESA_FORMAT_B8G8R8X8_SRGB
:
1411 case MESA_FORMAT_X8R8G8B8_SRGB
:
1412 *datatype
= GL_UNSIGNED_BYTE
;
1416 case MESA_FORMAT_COUNT
:
1420 const char *name
= _mesa_get_format_name(format
);
1421 /* Warn if any formats are not handled */
1422 _mesa_problem(NULL
, "bad format %s in _mesa_uncompressed_format_to_type_and_comps",
1423 name
? name
: "???");
1424 assert(format
== MESA_FORMAT_NONE
||
1425 _mesa_is_format_compressed(format
));
1433 * Check if a mesa_format exactly matches a GL format/type combination
1434 * such that we can use memcpy() from one to the other.
1435 * \param mesa_format a MESA_FORMAT_x value
1436 * \param format the user-specified image format
1437 * \param type the user-specified image datatype
1438 * \param swapBytes typically the current pixel pack/unpack byteswap state
1439 * \param[out] error GL_NO_ERROR if format is an expected input.
1440 * GL_INVALID_ENUM if format is an unexpected input.
1441 * \return true if the formats match, false otherwise.
1444 _mesa_format_matches_format_and_type(mesa_format mformat
,
1445 GLenum format
, GLenum type
,
1446 bool swapBytes
, GLenum
*error
)
1449 *error
= GL_NO_ERROR
;
1451 if (_mesa_is_format_compressed(mformat
)) {
1453 *error
= GL_INVALID_ENUM
;
1457 if (swapBytes
&& !_mesa_swap_bytes_in_type_enum(&type
))
1460 /* format/type don't include srgb and should match regardless of it. */
1461 mformat
= _mesa_get_srgb_format_linear(mformat
);
1463 /* intensity formats are uploaded with GL_RED, and we want to find
1464 * memcpy matches for them.
1466 mformat
= _mesa_get_intensity_format_red(mformat
);
1468 if (format
== GL_COLOR_INDEX
)
1471 mesa_format other_format
= _mesa_format_from_format_and_type(format
, type
);
1472 if (_mesa_format_is_mesa_array_format(other_format
))
1473 other_format
= _mesa_format_from_array_format(other_format
);
1475 return other_format
== mformat
;