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
);
88 assert(info
->Name
== format
);
93 /** Return string name of format (for debugging) */
95 _mesa_get_format_name(mesa_format format
)
97 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
104 * Return bytes needed to store a block of pixels in the given format.
105 * Normally, a block is 1x1 (a single pixel). But for compressed formats
106 * a block may be 4x4 or 8x4, etc.
108 * Note: return is signed, so as not to coerce math to unsigned. cf. fdo #37351
111 _mesa_get_format_bytes(mesa_format format
)
113 if (_mesa_format_is_mesa_array_format(format
)) {
114 return _mesa_array_format_get_type_size(format
) *
115 _mesa_array_format_get_num_channels(format
);
118 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
119 assert(info
->BytesPerBlock
);
120 assert(info
->BytesPerBlock
<= MAX_PIXEL_BYTES
||
121 _mesa_is_format_compressed(format
));
122 return info
->BytesPerBlock
;
127 * Return bits per component for the given format.
128 * \param format one of MESA_FORMAT_x
129 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
132 _mesa_get_format_bits(mesa_format format
, GLenum pname
)
134 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
138 case GL_TEXTURE_RED_SIZE
:
139 case GL_RENDERBUFFER_RED_SIZE_EXT
:
140 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
141 case GL_INTERNALFORMAT_RED_SIZE
:
142 return info
->RedBits
;
144 case GL_TEXTURE_GREEN_SIZE
:
145 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
146 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
147 case GL_INTERNALFORMAT_GREEN_SIZE
:
148 return info
->GreenBits
;
150 case GL_TEXTURE_BLUE_SIZE
:
151 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
152 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
153 case GL_INTERNALFORMAT_BLUE_SIZE
:
154 return info
->BlueBits
;
156 case GL_TEXTURE_ALPHA_SIZE
:
157 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
158 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
159 case GL_INTERNALFORMAT_ALPHA_SIZE
:
160 return info
->AlphaBits
;
161 case GL_TEXTURE_INTENSITY_SIZE
:
162 return info
->IntensityBits
;
163 case GL_TEXTURE_LUMINANCE_SIZE
:
164 return info
->LuminanceBits
;
168 case GL_TEXTURE_DEPTH_SIZE_ARB
:
169 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
170 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
171 case GL_INTERNALFORMAT_DEPTH_SIZE
:
172 return info
->DepthBits
;
173 case GL_STENCIL_BITS
:
174 case GL_TEXTURE_STENCIL_SIZE_EXT
:
175 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
176 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
177 case GL_INTERNALFORMAT_STENCIL_SIZE
:
178 return info
->StencilBits
;
180 _mesa_problem(NULL
, "bad pname in _mesa_get_format_bits()");
187 _mesa_get_format_max_bits(mesa_format format
)
189 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
190 unsigned int max
= MAX2(info
->RedBits
, info
->GreenBits
);
191 max
= MAX2(max
, info
->BlueBits
);
192 max
= MAX2(max
, info
->AlphaBits
);
193 max
= MAX2(max
, info
->LuminanceBits
);
194 max
= MAX2(max
, info
->IntensityBits
);
195 max
= MAX2(max
, info
->DepthBits
);
196 max
= MAX2(max
, info
->StencilBits
);
202 * Return the layout type of the given format.
204 extern enum mesa_format_layout
205 _mesa_get_format_layout(mesa_format format
)
207 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
213 * Return the data type (or more specifically, the data representation)
214 * for the given format.
215 * The return value will be one of:
216 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
217 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
218 * GL_UNSIGNED_INT = an ordinary unsigned integer
219 * GL_INT = an ordinary signed integer
220 * GL_FLOAT = an ordinary float
223 _mesa_get_format_datatype(mesa_format format
)
225 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
226 return info
->DataType
;
230 get_base_format_for_array_format(mesa_array_format format
)
235 switch (_mesa_array_format_get_base_format(format
)) {
236 case MESA_ARRAY_FORMAT_BASE_FORMAT_DEPTH
:
237 return GL_DEPTH_COMPONENT
;
238 case MESA_ARRAY_FORMAT_BASE_FORMAT_STENCIL
:
239 return GL_STENCIL_INDEX
;
240 case MESA_ARRAY_FORMAT_BASE_FORMAT_RGBA_VARIANTS
:
244 _mesa_array_format_get_swizzle(format
, swizzle
);
245 num_channels
= _mesa_array_format_get_num_channels(format
);
247 switch (num_channels
) {
249 /* FIXME: RGBX formats have 4 channels, but their base format is GL_RGB.
250 * This is not really a problem for now because we only create array
251 * formats from GL format/type combinations, and these cannot specify
258 if (swizzle
[0] == 0 &&
262 return GL_LUMINANCE_ALPHA
;
263 if (swizzle
[0] == 1 &&
267 return GL_LUMINANCE_ALPHA
;
268 if (swizzle
[0] == 0 &&
273 if (swizzle
[0] == 1 &&
280 if (swizzle
[0] == 0 &&
285 if (swizzle
[0] == 0 &&
290 if (swizzle
[0] <= MESA_FORMAT_SWIZZLE_W
)
292 if (swizzle
[1] <= MESA_FORMAT_SWIZZLE_W
)
294 if (swizzle
[2] <= MESA_FORMAT_SWIZZLE_W
)
296 if (swizzle
[3] <= MESA_FORMAT_SWIZZLE_W
)
301 unreachable("Unsupported format");
305 * Return the basic format for the given type. The result will be one of
306 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
307 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
308 * This functions accepts a mesa_format or a mesa_array_format.
311 _mesa_get_format_base_format(uint32_t format
)
313 if (!_mesa_format_is_mesa_array_format(format
)) {
314 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
315 return info
->BaseFormat
;
317 return get_base_format_for_array_format(format
);
323 * Return the block size (in pixels) for the given format. Normally
324 * the block size is 1x1. But compressed formats will have block sizes
325 * of 4x4 or 8x4 pixels, etc.
326 * \param bw returns block width in pixels
327 * \param bh returns block height in pixels
330 _mesa_get_format_block_size(mesa_format format
,
331 unsigned int *bw
, unsigned int *bh
)
333 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
334 /* Use _mesa_get_format_block_size_3d() for 3D blocks. */
335 assert(info
->BlockDepth
== 1);
337 *bw
= info
->BlockWidth
;
338 *bh
= info
->BlockHeight
;
343 * Return the block size (in pixels) for the given format. Normally
344 * the block size is 1x1x1. But compressed formats will have block
345 * sizes of 4x4x4, 3x3x3 pixels, etc.
346 * \param bw returns block width in pixels
347 * \param bh returns block height in pixels
348 * \param bd returns block depth in pixels
351 _mesa_get_format_block_size_3d(mesa_format format
,
356 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
357 *bw
= info
->BlockWidth
;
358 *bh
= info
->BlockHeight
;
359 *bd
= info
->BlockDepth
;
364 * Returns the an array of four numbers representing the transformation
365 * from the RGBA or SZ colorspace to the given format. For array formats,
366 * the i'th RGBA component is given by:
368 * if (swizzle[i] <= MESA_FORMAT_SWIZZLE_W)
369 * comp = data[swizzle[i]];
370 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ZERO)
372 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_ONE)
374 * else if (swizzle[i] == MESA_FORMAT_SWIZZLE_NONE)
375 * // data does not contain a channel of this format
377 * For packed formats, the swizzle gives the number of components left of
378 * the least significant bit.
380 * Compressed formats have no swizzle.
383 _mesa_get_format_swizzle(mesa_format format
, uint8_t swizzle_out
[4])
385 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
386 memcpy(swizzle_out
, info
->Swizzle
, sizeof(info
->Swizzle
));
390 _mesa_array_format_flip_channels(mesa_array_format format
)
395 num_channels
= _mesa_array_format_get_num_channels(format
);
396 _mesa_array_format_get_swizzle(format
, swizzle
);
398 if (num_channels
== 1)
401 if (num_channels
== 2) {
402 /* Assert that the swizzle makes sense for 2 channels */
403 for (unsigned i
= 0; i
< 4; i
++)
404 assert(swizzle
[i
] != 2 && swizzle
[i
] != 3);
406 static const uint8_t flip_xy
[6] = { 1, 0, 2, 3, 4, 5 };
407 _mesa_array_format_set_swizzle(&format
,
408 flip_xy
[swizzle
[0]], flip_xy
[swizzle
[1]],
409 flip_xy
[swizzle
[2]], flip_xy
[swizzle
[3]]);
413 if (num_channels
== 4) {
414 static const uint8_t flip
[6] = { 3, 2, 1, 0, 4, 5 };
415 _mesa_array_format_set_swizzle(&format
,
416 flip
[swizzle
[0]], flip
[swizzle
[1]],
417 flip
[swizzle
[2]], flip
[swizzle
[3]]);
421 unreachable("Invalid array format");
425 _mesa_format_to_array_format(mesa_format format
)
427 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
428 if (info
->ArrayFormat
&& !_mesa_little_endian() &&
429 info
->Layout
== MESA_FORMAT_LAYOUT_PACKED
)
430 return _mesa_array_format_flip_channels(info
->ArrayFormat
);
432 return info
->ArrayFormat
;
435 static struct hash_table
*format_array_format_table
;
436 static once_flag format_array_format_table_exists
= ONCE_FLAG_INIT
;
439 format_array_format_table_destroy(void)
441 _mesa_hash_table_destroy(format_array_format_table
, NULL
);
445 array_formats_equal(const void *a
, const void *b
)
447 return (intptr_t)a
== (intptr_t)b
;
451 format_array_format_table_init(void)
453 const struct mesa_format_info
*info
;
454 mesa_array_format array_format
;
457 format_array_format_table
= _mesa_hash_table_create(NULL
, NULL
,
458 array_formats_equal
);
460 if (!format_array_format_table
) {
461 _mesa_error_no_memory(__func__
);
465 for (f
= 1; f
< MESA_FORMAT_COUNT
; ++f
) {
466 info
= _mesa_get_format_info(f
);
467 if (!info
->ArrayFormat
)
470 if (_mesa_little_endian()) {
471 array_format
= info
->ArrayFormat
;
473 array_format
= _mesa_array_format_flip_channels(info
->ArrayFormat
);
476 /* This can happen and does for some of the BGR formats. Let's take
477 * the first one in the list.
479 if (_mesa_hash_table_search_pre_hashed(format_array_format_table
,
481 (void *)(intptr_t)array_format
))
484 _mesa_hash_table_insert_pre_hashed(format_array_format_table
,
486 (void *)(intptr_t)array_format
,
487 (void *)(intptr_t)f
);
490 atexit(format_array_format_table_destroy
);
494 _mesa_format_from_array_format(uint32_t array_format
)
496 struct hash_entry
*entry
;
498 assert(_mesa_format_is_mesa_array_format(array_format
));
500 call_once(&format_array_format_table_exists
, format_array_format_table_init
);
502 if (!format_array_format_table
) {
503 static const once_flag once_flag_init
= ONCE_FLAG_INIT
;
504 format_array_format_table_exists
= once_flag_init
;
505 return MESA_FORMAT_NONE
;
508 entry
= _mesa_hash_table_search_pre_hashed(format_array_format_table
,
510 (void *)(intptr_t)array_format
);
512 return (intptr_t)entry
->data
;
514 return MESA_FORMAT_NONE
;
517 /** Is the given format a compressed format? */
519 _mesa_is_format_compressed(mesa_format format
)
521 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
522 return info
->BlockWidth
> 1 || info
->BlockHeight
> 1;
527 * Determine if the given format represents a packed depth/stencil buffer.
530 _mesa_is_format_packed_depth_stencil(mesa_format format
)
532 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
534 return info
->BaseFormat
== GL_DEPTH_STENCIL
;
539 * Is the given format a signed/unsigned integer color format?
542 _mesa_is_format_integer_color(mesa_format format
)
544 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
545 return (info
->DataType
== GL_INT
|| info
->DataType
== GL_UNSIGNED_INT
) &&
546 info
->BaseFormat
!= GL_DEPTH_COMPONENT
&&
547 info
->BaseFormat
!= GL_DEPTH_STENCIL
&&
548 info
->BaseFormat
!= GL_STENCIL_INDEX
;
553 * Is the given format an unsigned integer format?
556 _mesa_is_format_unsigned(mesa_format format
)
558 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
559 return _mesa_is_type_unsigned(info
->DataType
);
564 * Does the given format store signed values?
567 _mesa_is_format_signed(mesa_format format
)
569 if (format
== MESA_FORMAT_R11G11B10_FLOAT
||
570 format
== MESA_FORMAT_R9G9B9E5_FLOAT
) {
571 /* these packed float formats only store unsigned values */
575 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
576 return (info
->DataType
== GL_SIGNED_NORMALIZED
||
577 info
->DataType
== GL_INT
||
578 info
->DataType
== GL_FLOAT
);
583 * Is the given format an integer format?
586 _mesa_is_format_integer(mesa_format format
)
588 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
589 return (info
->DataType
== GL_INT
|| info
->DataType
== GL_UNSIGNED_INT
);
594 * Return true if the given format is a color format.
597 _mesa_is_format_color_format(mesa_format format
)
599 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
600 switch (info
->BaseFormat
) {
601 case GL_DEPTH_COMPONENT
:
602 case GL_STENCIL_INDEX
:
603 case GL_DEPTH_STENCIL
:
611 _mesa_is_format_srgb(mesa_format format
)
613 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
614 return info
->IsSRGBFormat
;
618 * Return TRUE if format is an ETC2 compressed format specified
619 * by GL_ARB_ES3_compatibility.
622 _mesa_is_format_etc2(mesa_format format
)
625 case MESA_FORMAT_ETC2_RGB8
:
626 case MESA_FORMAT_ETC2_SRGB8
:
627 case MESA_FORMAT_ETC2_RGBA8_EAC
:
628 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC
:
629 case MESA_FORMAT_ETC2_R11_EAC
:
630 case MESA_FORMAT_ETC2_RG11_EAC
:
631 case MESA_FORMAT_ETC2_SIGNED_R11_EAC
:
632 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC
:
633 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1
:
634 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1
:
643 * Return TRUE if format is an ASTC 2D compressed format.
646 _mesa_is_format_astc_2d(mesa_format format
)
649 case MESA_FORMAT_RGBA_ASTC_4x4
:
650 case MESA_FORMAT_RGBA_ASTC_5x4
:
651 case MESA_FORMAT_RGBA_ASTC_5x5
:
652 case MESA_FORMAT_RGBA_ASTC_6x5
:
653 case MESA_FORMAT_RGBA_ASTC_6x6
:
654 case MESA_FORMAT_RGBA_ASTC_8x5
:
655 case MESA_FORMAT_RGBA_ASTC_8x6
:
656 case MESA_FORMAT_RGBA_ASTC_8x8
:
657 case MESA_FORMAT_RGBA_ASTC_10x5
:
658 case MESA_FORMAT_RGBA_ASTC_10x6
:
659 case MESA_FORMAT_RGBA_ASTC_10x8
:
660 case MESA_FORMAT_RGBA_ASTC_10x10
:
661 case MESA_FORMAT_RGBA_ASTC_12x10
:
662 case MESA_FORMAT_RGBA_ASTC_12x12
:
663 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4
:
664 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4
:
665 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5
:
666 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5
:
667 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6
:
668 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5
:
669 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6
:
670 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8
:
671 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5
:
672 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6
:
673 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8
:
674 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10
:
675 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10
:
676 case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12
:
685 * If the given format is a compressed format, return a corresponding
686 * uncompressed format.
689 _mesa_get_uncompressed_format(mesa_format format
)
692 case MESA_FORMAT_RGB_FXT1
:
693 return MESA_FORMAT_BGR_UNORM8
;
694 case MESA_FORMAT_RGBA_FXT1
:
695 return MESA_FORMAT_A8B8G8R8_UNORM
;
696 case MESA_FORMAT_RGB_DXT1
:
697 case MESA_FORMAT_SRGB_DXT1
:
698 return MESA_FORMAT_BGR_UNORM8
;
699 case MESA_FORMAT_RGBA_DXT1
:
700 case MESA_FORMAT_SRGBA_DXT1
:
701 return MESA_FORMAT_A8B8G8R8_UNORM
;
702 case MESA_FORMAT_RGBA_DXT3
:
703 case MESA_FORMAT_SRGBA_DXT3
:
704 return MESA_FORMAT_A8B8G8R8_UNORM
;
705 case MESA_FORMAT_RGBA_DXT5
:
706 case MESA_FORMAT_SRGBA_DXT5
:
707 return MESA_FORMAT_A8B8G8R8_UNORM
;
708 case MESA_FORMAT_R_RGTC1_UNORM
:
709 return MESA_FORMAT_R_UNORM8
;
710 case MESA_FORMAT_R_RGTC1_SNORM
:
711 return MESA_FORMAT_R_SNORM8
;
712 case MESA_FORMAT_RG_RGTC2_UNORM
:
713 return MESA_FORMAT_R8G8_UNORM
;
714 case MESA_FORMAT_RG_RGTC2_SNORM
:
715 return MESA_FORMAT_R8G8_SNORM
;
716 case MESA_FORMAT_L_LATC1_UNORM
:
717 return MESA_FORMAT_L_UNORM8
;
718 case MESA_FORMAT_L_LATC1_SNORM
:
719 return MESA_FORMAT_L_SNORM8
;
720 case MESA_FORMAT_LA_LATC2_UNORM
:
721 return MESA_FORMAT_LA_UNORM8
;
722 case MESA_FORMAT_LA_LATC2_SNORM
:
723 return MESA_FORMAT_LA_SNORM8
;
724 case MESA_FORMAT_ETC1_RGB8
:
725 case MESA_FORMAT_ETC2_RGB8
:
726 case MESA_FORMAT_ETC2_SRGB8
:
727 case MESA_FORMAT_ATC_RGB
:
728 return MESA_FORMAT_BGR_UNORM8
;
729 case MESA_FORMAT_ETC2_RGBA8_EAC
:
730 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC
:
731 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1
:
732 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1
:
733 case MESA_FORMAT_ATC_RGBA_EXPLICIT
:
734 case MESA_FORMAT_ATC_RGBA_INTERPOLATED
:
735 return MESA_FORMAT_A8B8G8R8_UNORM
;
736 case MESA_FORMAT_ETC2_R11_EAC
:
737 case MESA_FORMAT_ETC2_SIGNED_R11_EAC
:
738 return MESA_FORMAT_R_UNORM16
;
739 case MESA_FORMAT_ETC2_RG11_EAC
:
740 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC
:
741 return MESA_FORMAT_R16G16_UNORM
;
742 case MESA_FORMAT_BPTC_RGBA_UNORM
:
743 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM
:
744 return MESA_FORMAT_A8B8G8R8_UNORM
;
745 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT
:
746 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT
:
747 return MESA_FORMAT_RGB_FLOAT32
;
749 assert(!_mesa_is_format_compressed(format
));
756 _mesa_format_num_components(mesa_format format
)
758 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
759 return ((info
->RedBits
> 0) +
760 (info
->GreenBits
> 0) +
761 (info
->BlueBits
> 0) +
762 (info
->AlphaBits
> 0) +
763 (info
->LuminanceBits
> 0) +
764 (info
->IntensityBits
> 0) +
765 (info
->DepthBits
> 0) +
766 (info
->StencilBits
> 0));
771 * Returns true if a color format has data stored in the R/G/B/A channels,
772 * given an index from 0 to 3.
775 _mesa_format_has_color_component(mesa_format format
, int component
)
777 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
779 assert(info
->BaseFormat
!= GL_DEPTH_COMPONENT
&&
780 info
->BaseFormat
!= GL_DEPTH_STENCIL
&&
781 info
->BaseFormat
!= GL_STENCIL_INDEX
);
785 return (info
->RedBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
787 return (info
->GreenBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
789 return (info
->BlueBits
+ info
->IntensityBits
+ info
->LuminanceBits
) > 0;
791 return (info
->AlphaBits
+ info
->IntensityBits
) > 0;
793 assert(!"Invalid color component: must be 0..3");
800 * Return number of bytes needed to store an image of the given size
801 * in the given format.
804 _mesa_format_image_size(mesa_format format
, int width
,
805 int height
, int depth
)
807 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
809 /* Strictly speaking, a conditional isn't needed here */
810 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1 || info
->BlockDepth
> 1) {
811 /* compressed format (2D only for now) */
812 const uint32_t bw
= info
->BlockWidth
;
813 const uint32_t bh
= info
->BlockHeight
;
814 const uint32_t bd
= info
->BlockDepth
;
815 const uint32_t wblocks
= (width
+ bw
- 1) / bw
;
816 const uint32_t hblocks
= (height
+ bh
- 1) / bh
;
817 const uint32_t dblocks
= (depth
+ bd
- 1) / bd
;
818 sz
= wblocks
* hblocks
* dblocks
* info
->BytesPerBlock
;
821 sz
= width
* height
* depth
* info
->BytesPerBlock
;
828 * Same as _mesa_format_image_size() but returns a 64-bit value to
829 * accommodate very large textures.
832 _mesa_format_image_size64(mesa_format format
, int width
,
833 int height
, int depth
)
835 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
837 /* Strictly speaking, a conditional isn't needed here */
838 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1 || info
->BlockDepth
> 1) {
839 /* compressed format (2D only for now) */
840 const uint64_t bw
= info
->BlockWidth
;
841 const uint64_t bh
= info
->BlockHeight
;
842 const uint64_t bd
= info
->BlockDepth
;
843 const uint64_t wblocks
= (width
+ bw
- 1) / bw
;
844 const uint64_t hblocks
= (height
+ bh
- 1) / bh
;
845 const uint64_t dblocks
= (depth
+ bd
- 1) / bd
;
846 sz
= wblocks
* hblocks
* dblocks
* info
->BytesPerBlock
;
849 sz
= ((uint64_t) width
* (uint64_t) height
*
850 (uint64_t) depth
* info
->BytesPerBlock
);
858 _mesa_format_row_stride(mesa_format format
, int width
)
860 const struct mesa_format_info
*info
= _mesa_get_format_info(format
);
861 /* Strictly speaking, a conditional isn't needed here */
862 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1) {
863 /* compressed format */
864 const uint32_t bw
= info
->BlockWidth
;
865 const uint32_t wblocks
= (width
+ bw
- 1) / bw
;
866 const int32_t stride
= wblocks
* info
->BytesPerBlock
;
870 const int32_t stride
= width
* info
->BytesPerBlock
;
878 * Return datatype and number of components per texel for the given
879 * uncompressed mesa_format. Only used for mipmap generation code.
882 _mesa_uncompressed_format_to_type_and_comps(mesa_format format
,
883 GLenum
*datatype
, GLuint
*comps
)
886 case MESA_FORMAT_A8B8G8R8_UNORM
:
887 case MESA_FORMAT_R8G8B8A8_UNORM
:
888 case MESA_FORMAT_B8G8R8A8_UNORM
:
889 case MESA_FORMAT_A8R8G8B8_UNORM
:
890 case MESA_FORMAT_X8B8G8R8_UNORM
:
891 case MESA_FORMAT_R8G8B8X8_UNORM
:
892 case MESA_FORMAT_B8G8R8X8_UNORM
:
893 case MESA_FORMAT_X8R8G8B8_UNORM
:
894 case MESA_FORMAT_A8B8G8R8_UINT
:
895 case MESA_FORMAT_R8G8B8A8_UINT
:
896 case MESA_FORMAT_B8G8R8A8_UINT
:
897 case MESA_FORMAT_A8R8G8B8_UINT
:
898 *datatype
= GL_UNSIGNED_BYTE
;
901 case MESA_FORMAT_BGR_UNORM8
:
902 case MESA_FORMAT_RGB_UNORM8
:
903 *datatype
= GL_UNSIGNED_BYTE
;
906 case MESA_FORMAT_B5G6R5_UNORM
:
907 case MESA_FORMAT_R5G6B5_UNORM
:
908 case MESA_FORMAT_B5G6R5_UINT
:
909 case MESA_FORMAT_R5G6B5_UINT
:
910 *datatype
= GL_UNSIGNED_SHORT_5_6_5
;
914 case MESA_FORMAT_B4G4R4A4_UNORM
:
915 case MESA_FORMAT_A4R4G4B4_UNORM
:
916 case MESA_FORMAT_B4G4R4X4_UNORM
:
917 case MESA_FORMAT_B4G4R4A4_UINT
:
918 case MESA_FORMAT_A4R4G4B4_UINT
:
919 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
923 case MESA_FORMAT_B5G5R5A1_UNORM
:
924 case MESA_FORMAT_A1R5G5B5_UNORM
:
925 case MESA_FORMAT_B5G5R5X1_UNORM
:
926 case MESA_FORMAT_B5G5R5A1_UINT
:
927 case MESA_FORMAT_A1R5G5B5_UINT
:
928 *datatype
= GL_UNSIGNED_SHORT_1_5_5_5_REV
;
932 case MESA_FORMAT_B10G10R10A2_UNORM
:
933 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
937 case MESA_FORMAT_A1B5G5R5_UNORM
:
938 case MESA_FORMAT_A1B5G5R5_UINT
:
939 case MESA_FORMAT_X1B5G5R5_UNORM
:
940 *datatype
= GL_UNSIGNED_SHORT_5_5_5_1
;
944 case MESA_FORMAT_L4A4_UNORM
:
945 *datatype
= MESA_UNSIGNED_BYTE_4_4
;
949 case MESA_FORMAT_LA_UNORM8
:
950 case MESA_FORMAT_R8G8_UNORM
:
951 case MESA_FORMAT_G8R8_UNORM
:
952 *datatype
= GL_UNSIGNED_BYTE
;
956 case MESA_FORMAT_LA_UNORM16
:
957 case MESA_FORMAT_R16G16_UNORM
:
958 case MESA_FORMAT_G16R16_UNORM
:
959 *datatype
= GL_UNSIGNED_SHORT
;
963 case MESA_FORMAT_R_UNORM16
:
964 case MESA_FORMAT_A_UNORM16
:
965 case MESA_FORMAT_L_UNORM16
:
966 case MESA_FORMAT_I_UNORM16
:
967 *datatype
= GL_UNSIGNED_SHORT
;
971 case MESA_FORMAT_R3G3B2_UNORM
:
972 case MESA_FORMAT_R3G3B2_UINT
:
973 *datatype
= GL_UNSIGNED_BYTE_2_3_3_REV
;
976 case MESA_FORMAT_A4B4G4R4_UNORM
:
977 case MESA_FORMAT_A4B4G4R4_UINT
:
978 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
982 case MESA_FORMAT_R4G4B4A4_UNORM
:
983 case MESA_FORMAT_R4G4B4A4_UINT
:
984 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
987 case MESA_FORMAT_R5G5B5A1_UNORM
:
988 case MESA_FORMAT_R5G5B5A1_UINT
:
989 *datatype
= GL_UNSIGNED_SHORT_1_5_5_5_REV
;
992 case MESA_FORMAT_A2B10G10R10_UNORM
:
993 case MESA_FORMAT_A2B10G10R10_UINT
:
994 *datatype
= GL_UNSIGNED_INT_10_10_10_2
;
997 case MESA_FORMAT_A2R10G10B10_UNORM
:
998 case MESA_FORMAT_A2R10G10B10_UINT
:
999 *datatype
= GL_UNSIGNED_INT_10_10_10_2
;
1003 case MESA_FORMAT_B2G3R3_UNORM
:
1004 case MESA_FORMAT_B2G3R3_UINT
:
1005 *datatype
= GL_UNSIGNED_BYTE_3_3_2
;
1009 case MESA_FORMAT_A_UNORM8
:
1010 case MESA_FORMAT_L_UNORM8
:
1011 case MESA_FORMAT_I_UNORM8
:
1012 case MESA_FORMAT_R_UNORM8
:
1013 case MESA_FORMAT_S_UINT8
:
1014 *datatype
= GL_UNSIGNED_BYTE
;
1018 case MESA_FORMAT_YCBCR
:
1019 case MESA_FORMAT_YCBCR_REV
:
1020 *datatype
= GL_UNSIGNED_SHORT
;
1024 case MESA_FORMAT_S8_UINT_Z24_UNORM
:
1025 *datatype
= GL_UNSIGNED_INT_24_8_MESA
;
1029 case MESA_FORMAT_Z24_UNORM_S8_UINT
:
1030 *datatype
= GL_UNSIGNED_INT_8_24_REV_MESA
;
1034 case MESA_FORMAT_Z_UNORM16
:
1035 *datatype
= GL_UNSIGNED_SHORT
;
1039 case MESA_FORMAT_Z24_UNORM_X8_UINT
:
1040 *datatype
= GL_UNSIGNED_INT
;
1044 case MESA_FORMAT_X8_UINT_Z24_UNORM
:
1045 *datatype
= GL_UNSIGNED_INT
;
1049 case MESA_FORMAT_Z_UNORM32
:
1050 *datatype
= GL_UNSIGNED_INT
;
1054 case MESA_FORMAT_Z_FLOAT32
:
1055 *datatype
= GL_FLOAT
;
1059 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT
:
1060 *datatype
= GL_FLOAT_32_UNSIGNED_INT_24_8_REV
;
1064 case MESA_FORMAT_R_SNORM8
:
1065 case MESA_FORMAT_A_SNORM8
:
1066 case MESA_FORMAT_L_SNORM8
:
1067 case MESA_FORMAT_I_SNORM8
:
1068 *datatype
= GL_BYTE
;
1071 case MESA_FORMAT_R8G8_SNORM
:
1072 case MESA_FORMAT_LA_SNORM8
:
1073 *datatype
= GL_BYTE
;
1076 case MESA_FORMAT_A8B8G8R8_SNORM
:
1077 case MESA_FORMAT_R8G8B8A8_SNORM
:
1078 case MESA_FORMAT_X8B8G8R8_SNORM
:
1079 *datatype
= GL_BYTE
;
1083 case MESA_FORMAT_RGBA_UNORM16
:
1084 *datatype
= GL_UNSIGNED_SHORT
;
1088 case MESA_FORMAT_R_SNORM16
:
1089 case MESA_FORMAT_A_SNORM16
:
1090 case MESA_FORMAT_L_SNORM16
:
1091 case MESA_FORMAT_I_SNORM16
:
1092 *datatype
= GL_SHORT
;
1095 case MESA_FORMAT_R16G16_SNORM
:
1096 case MESA_FORMAT_LA_SNORM16
:
1097 *datatype
= GL_SHORT
;
1100 case MESA_FORMAT_RGB_SNORM16
:
1101 *datatype
= GL_SHORT
;
1104 case MESA_FORMAT_RGBA_SNORM16
:
1105 *datatype
= GL_SHORT
;
1109 case MESA_FORMAT_BGR_SRGB8
:
1110 *datatype
= GL_UNSIGNED_BYTE
;
1113 case MESA_FORMAT_A8B8G8R8_SRGB
:
1114 case MESA_FORMAT_B8G8R8A8_SRGB
:
1115 case MESA_FORMAT_A8R8G8B8_SRGB
:
1116 case MESA_FORMAT_R8G8B8A8_SRGB
:
1117 *datatype
= GL_UNSIGNED_BYTE
;
1120 case MESA_FORMAT_L_SRGB8
:
1121 case MESA_FORMAT_R_SRGB8
:
1122 *datatype
= GL_UNSIGNED_BYTE
;
1125 case MESA_FORMAT_LA_SRGB8
:
1126 *datatype
= GL_UNSIGNED_BYTE
;
1130 case MESA_FORMAT_RGBA_FLOAT32
:
1131 *datatype
= GL_FLOAT
;
1134 case MESA_FORMAT_RGBA_FLOAT16
:
1135 *datatype
= GL_HALF_FLOAT_ARB
;
1138 case MESA_FORMAT_RGB_FLOAT32
:
1139 *datatype
= GL_FLOAT
;
1142 case MESA_FORMAT_RGB_FLOAT16
:
1143 *datatype
= GL_HALF_FLOAT_ARB
;
1146 case MESA_FORMAT_LA_FLOAT32
:
1147 case MESA_FORMAT_RG_FLOAT32
:
1148 *datatype
= GL_FLOAT
;
1151 case MESA_FORMAT_LA_FLOAT16
:
1152 case MESA_FORMAT_RG_FLOAT16
:
1153 *datatype
= GL_HALF_FLOAT_ARB
;
1156 case MESA_FORMAT_A_FLOAT32
:
1157 case MESA_FORMAT_L_FLOAT32
:
1158 case MESA_FORMAT_I_FLOAT32
:
1159 case MESA_FORMAT_R_FLOAT32
:
1160 *datatype
= GL_FLOAT
;
1163 case MESA_FORMAT_A_FLOAT16
:
1164 case MESA_FORMAT_L_FLOAT16
:
1165 case MESA_FORMAT_I_FLOAT16
:
1166 case MESA_FORMAT_R_FLOAT16
:
1167 *datatype
= GL_HALF_FLOAT_ARB
;
1171 case MESA_FORMAT_A_UINT8
:
1172 case MESA_FORMAT_L_UINT8
:
1173 case MESA_FORMAT_I_UINT8
:
1174 *datatype
= GL_UNSIGNED_BYTE
;
1177 case MESA_FORMAT_LA_UINT8
:
1178 *datatype
= GL_UNSIGNED_BYTE
;
1182 case MESA_FORMAT_A_UINT16
:
1183 case MESA_FORMAT_L_UINT16
:
1184 case MESA_FORMAT_I_UINT16
:
1185 *datatype
= GL_UNSIGNED_SHORT
;
1188 case MESA_FORMAT_LA_UINT16
:
1189 *datatype
= GL_UNSIGNED_SHORT
;
1192 case MESA_FORMAT_A_UINT32
:
1193 case MESA_FORMAT_L_UINT32
:
1194 case MESA_FORMAT_I_UINT32
:
1195 *datatype
= GL_UNSIGNED_INT
;
1198 case MESA_FORMAT_LA_UINT32
:
1199 *datatype
= GL_UNSIGNED_INT
;
1202 case MESA_FORMAT_A_SINT8
:
1203 case MESA_FORMAT_L_SINT8
:
1204 case MESA_FORMAT_I_SINT8
:
1205 *datatype
= GL_BYTE
;
1208 case MESA_FORMAT_LA_SINT8
:
1209 *datatype
= GL_BYTE
;
1213 case MESA_FORMAT_A_SINT16
:
1214 case MESA_FORMAT_L_SINT16
:
1215 case MESA_FORMAT_I_SINT16
:
1216 *datatype
= GL_SHORT
;
1219 case MESA_FORMAT_LA_SINT16
:
1220 *datatype
= GL_SHORT
;
1224 case MESA_FORMAT_A_SINT32
:
1225 case MESA_FORMAT_L_SINT32
:
1226 case MESA_FORMAT_I_SINT32
:
1230 case MESA_FORMAT_LA_SINT32
:
1235 case MESA_FORMAT_R_SINT8
:
1236 *datatype
= GL_BYTE
;
1239 case MESA_FORMAT_RG_SINT8
:
1240 *datatype
= GL_BYTE
;
1243 case MESA_FORMAT_RGB_SINT8
:
1244 *datatype
= GL_BYTE
;
1247 case MESA_FORMAT_RGBA_SINT8
:
1248 *datatype
= GL_BYTE
;
1251 case MESA_FORMAT_R_SINT16
:
1252 *datatype
= GL_SHORT
;
1255 case MESA_FORMAT_RG_SINT16
:
1256 *datatype
= GL_SHORT
;
1259 case MESA_FORMAT_RGB_SINT16
:
1260 *datatype
= GL_SHORT
;
1263 case MESA_FORMAT_RGBA_SINT16
:
1264 *datatype
= GL_SHORT
;
1267 case MESA_FORMAT_R_SINT32
:
1271 case MESA_FORMAT_RG_SINT32
:
1275 case MESA_FORMAT_RGB_SINT32
:
1279 case MESA_FORMAT_RGBA_SINT32
:
1285 * \name Non-normalized unsigned integer formats.
1287 case MESA_FORMAT_R_UINT8
:
1288 *datatype
= GL_UNSIGNED_BYTE
;
1291 case MESA_FORMAT_RG_UINT8
:
1292 *datatype
= GL_UNSIGNED_BYTE
;
1295 case MESA_FORMAT_RGB_UINT8
:
1296 *datatype
= GL_UNSIGNED_BYTE
;
1299 case MESA_FORMAT_RGBA_UINT8
:
1300 *datatype
= GL_UNSIGNED_BYTE
;
1303 case MESA_FORMAT_R_UINT16
:
1304 *datatype
= GL_UNSIGNED_SHORT
;
1307 case MESA_FORMAT_RG_UINT16
:
1308 *datatype
= GL_UNSIGNED_SHORT
;
1311 case MESA_FORMAT_RGB_UINT16
:
1312 *datatype
= GL_UNSIGNED_SHORT
;
1315 case MESA_FORMAT_RGBA_UINT16
:
1316 *datatype
= GL_UNSIGNED_SHORT
;
1319 case MESA_FORMAT_R_UINT32
:
1320 *datatype
= GL_UNSIGNED_INT
;
1323 case MESA_FORMAT_RG_UINT32
:
1324 *datatype
= GL_UNSIGNED_INT
;
1327 case MESA_FORMAT_RGB_UINT32
:
1328 *datatype
= GL_UNSIGNED_INT
;
1331 case MESA_FORMAT_RGBA_UINT32
:
1332 *datatype
= GL_UNSIGNED_INT
;
1336 case MESA_FORMAT_R9G9B9E5_FLOAT
:
1337 *datatype
= GL_UNSIGNED_INT_5_9_9_9_REV
;
1341 case MESA_FORMAT_R11G11B10_FLOAT
:
1342 *datatype
= GL_UNSIGNED_INT_10F_11F_11F_REV
;
1346 case MESA_FORMAT_B10G10R10A2_UINT
:
1347 case MESA_FORMAT_R10G10B10A2_UINT
:
1348 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1352 case MESA_FORMAT_R8G8B8X8_SRGB
:
1353 case MESA_FORMAT_X8B8G8R8_SRGB
:
1354 case MESA_FORMAT_RGBX_UINT8
:
1355 *datatype
= GL_UNSIGNED_BYTE
;
1359 case MESA_FORMAT_R8G8B8X8_SNORM
:
1360 case MESA_FORMAT_RGBX_SINT8
:
1361 *datatype
= GL_BYTE
;
1365 case MESA_FORMAT_B10G10R10X2_UNORM
:
1366 case MESA_FORMAT_R10G10B10X2_UNORM
:
1367 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1371 case MESA_FORMAT_RGBX_UNORM16
:
1372 case MESA_FORMAT_RGBX_UINT16
:
1373 *datatype
= GL_UNSIGNED_SHORT
;
1377 case MESA_FORMAT_RGBX_SNORM16
:
1378 case MESA_FORMAT_RGBX_SINT16
:
1379 *datatype
= GL_SHORT
;
1383 case MESA_FORMAT_RGBX_FLOAT16
:
1384 *datatype
= GL_HALF_FLOAT
;
1388 case MESA_FORMAT_RGBX_FLOAT32
:
1389 *datatype
= GL_FLOAT
;
1393 case MESA_FORMAT_RGBX_UINT32
:
1394 *datatype
= GL_UNSIGNED_INT
;
1398 case MESA_FORMAT_RGBX_SINT32
:
1403 case MESA_FORMAT_R10G10B10A2_UNORM
:
1404 *datatype
= GL_UNSIGNED_INT_2_10_10_10_REV
;
1408 case MESA_FORMAT_G8R8_SNORM
:
1409 *datatype
= GL_BYTE
;
1413 case MESA_FORMAT_G16R16_SNORM
:
1414 *datatype
= GL_SHORT
;
1418 case MESA_FORMAT_B8G8R8X8_SRGB
:
1419 case MESA_FORMAT_X8R8G8B8_SRGB
:
1420 *datatype
= GL_UNSIGNED_BYTE
;
1424 case MESA_FORMAT_COUNT
:
1428 /* Warn if any formats are not handled */
1429 _mesa_problem(NULL
, "bad format %s in _mesa_uncompressed_format_to_type_and_comps",
1430 _mesa_get_format_name(format
));
1431 assert(format
== MESA_FORMAT_NONE
||
1432 _mesa_is_format_compressed(format
));
1439 * Check if a mesa_format exactly matches a GL format/type combination
1440 * such that we can use memcpy() from one to the other.
1441 * \param mesa_format a MESA_FORMAT_x value
1442 * \param format the user-specified image format
1443 * \param type the user-specified image datatype
1444 * \param swapBytes typically the current pixel pack/unpack byteswap state
1445 * \param[out] error GL_NO_ERROR if format is an expected input.
1446 * GL_INVALID_ENUM if format is an unexpected input.
1447 * \return true if the formats match, false otherwise.
1450 _mesa_format_matches_format_and_type(mesa_format mformat
,
1451 GLenum format
, GLenum type
,
1452 bool swapBytes
, GLenum
*error
)
1455 *error
= GL_NO_ERROR
;
1457 if (_mesa_is_format_compressed(mformat
)) {
1459 *error
= GL_INVALID_ENUM
;
1463 if (swapBytes
&& !_mesa_swap_bytes_in_type_enum(&type
))
1466 /* format/type don't include srgb and should match regardless of it. */
1467 mformat
= _mesa_get_srgb_format_linear(mformat
);
1469 /* intensity formats are uploaded with GL_RED, and we want to find
1470 * memcpy matches for them.
1472 mformat
= _mesa_get_intensity_format_red(mformat
);
1474 if (format
== GL_COLOR_INDEX
)
1477 mesa_format other_format
= _mesa_format_from_format_and_type(format
, type
);
1478 if (_mesa_format_is_mesa_array_format(other_format
))
1479 other_format
= _mesa_format_from_array_format(other_format
);
1481 return other_format
== mformat
;