2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008-2009 VMware, Inc.
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 * BRIAN PAUL 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.
34 * Information about texture formats.
40 /** text name for debugging */
44 * Base format is one of GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE,
45 * GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA, GL_COLOR_INDEX,
46 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
51 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALED,
52 * GL_UNSIGNED_INT, GL_SIGNED_INT, GL_FLOAT.
60 GLubyte LuminanceBits
;
61 GLubyte IntensityBits
;
67 * To describe compressed formats. If not compressed, Width=Height=1.
69 GLubyte BlockWidth
, BlockHeight
;
70 GLubyte BytesPerBlock
;
75 * Info about each format.
76 * These must be in the same order as the MESA_FORMAT_* enums so that
77 * we can do lookups without searching.
79 static struct gl_format_info format_info
[MESA_FORMAT_COUNT
] =
82 MESA_FORMAT_NONE
, /* Name */
83 "MESA_FORMAT_NONE", /* StrName */
84 GL_NONE
, /* BaseFormat */
85 GL_NONE
, /* DataType */
86 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
87 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
88 0, 0, 0 /* BlockWidth/Height,Bytes */
91 MESA_FORMAT_RGBA8888
, /* Name */
92 "MESA_FORMAT_RGBA8888", /* StrName */
93 GL_RGBA
, /* BaseFormat */
94 GL_UNSIGNED_NORMALIZED
, /* DataType */
95 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
96 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
97 1, 1, 4 /* BlockWidth/Height,Bytes */
100 MESA_FORMAT_RGBA8888_REV
, /* Name */
101 "MESA_FORMAT_RGBA8888_REV", /* StrName */
102 GL_RGBA
, /* BaseFormat */
103 GL_UNSIGNED_NORMALIZED
, /* DataType */
104 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
105 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
106 1, 1, 4 /* BlockWidth/Height,Bytes */
109 MESA_FORMAT_ARGB8888
, /* Name */
110 "MESA_FORMAT_ARGB8888", /* StrName */
111 GL_RGBA
, /* BaseFormat */
112 GL_UNSIGNED_NORMALIZED
, /* DataType */
113 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
114 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
115 1, 1, 4 /* BlockWidth/Height,Bytes */
118 MESA_FORMAT_ARGB8888_REV
, /* Name */
119 "MESA_FORMAT_ARGB8888_REV", /* StrName */
120 GL_RGBA
, /* BaseFormat */
121 GL_UNSIGNED_NORMALIZED
, /* DataType */
122 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
123 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
124 1, 1, 4 /* BlockWidth/Height,Bytes */
127 MESA_FORMAT_XRGB8888
, /* Name */
128 "MESA_FORMAT_XRGB8888", /* StrName */
129 GL_RGB
, /* BaseFormat */
130 GL_UNSIGNED_NORMALIZED
, /* DataType */
131 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
132 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
133 1, 1, 4 /* BlockWidth/Height,Bytes */
136 MESA_FORMAT_XRGB8888_REV
, /* Name */
137 "MESA_FORMAT_XRGB8888_REV", /* StrName */
138 GL_RGB
, /* BaseFormat */
139 GL_UNSIGNED_NORMALIZED
, /* DataType */
140 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
141 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
142 1, 1, 4 /* BlockWidth/Height,Bytes */
145 MESA_FORMAT_RGB888
, /* Name */
146 "MESA_FORMAT_RGB888", /* StrName */
147 GL_RGB
, /* BaseFormat */
148 GL_UNSIGNED_NORMALIZED
, /* DataType */
149 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
150 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
151 1, 1, 3 /* BlockWidth/Height,Bytes */
154 MESA_FORMAT_BGR888
, /* Name */
155 "MESA_FORMAT_BGR888", /* StrName */
156 GL_RGB
, /* BaseFormat */
157 GL_UNSIGNED_NORMALIZED
, /* DataType */
158 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
159 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
160 1, 1, 3 /* BlockWidth/Height,Bytes */
163 MESA_FORMAT_RGB565
, /* Name */
164 "MESA_FORMAT_RGB565", /* StrName */
165 GL_RGB
, /* BaseFormat */
166 GL_UNSIGNED_NORMALIZED
, /* DataType */
167 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
168 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
169 1, 1, 2 /* BlockWidth/Height,Bytes */
172 MESA_FORMAT_RGB565_REV
, /* Name */
173 "MESA_FORMAT_RGB565_REV", /* StrName */
174 GL_RGB
, /* BaseFormat */
175 GL_UNSIGNED_NORMALIZED
, /* DataType */
176 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
177 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
178 1, 1, 2 /* BlockWidth/Height,Bytes */
181 MESA_FORMAT_ARGB4444
, /* Name */
182 "MESA_FORMAT_ARGB4444", /* StrName */
183 GL_RGBA
, /* BaseFormat */
184 GL_UNSIGNED_NORMALIZED
, /* DataType */
185 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
186 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
187 1, 1, 2 /* BlockWidth/Height,Bytes */
190 MESA_FORMAT_ARGB4444_REV
, /* Name */
191 "MESA_FORMAT_ARGB4444_REV", /* StrName */
192 GL_RGBA
, /* BaseFormat */
193 GL_UNSIGNED_NORMALIZED
, /* DataType */
194 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
195 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
196 1, 1, 2 /* BlockWidth/Height,Bytes */
199 MESA_FORMAT_RGBA5551
, /* Name */
200 "MESA_FORMAT_RGBA5551", /* StrName */
201 GL_RGBA
, /* BaseFormat */
202 GL_UNSIGNED_NORMALIZED
, /* DataType */
203 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
204 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
205 1, 1, 2 /* BlockWidth/Height,Bytes */
208 MESA_FORMAT_ARGB1555
, /* Name */
209 "MESA_FORMAT_ARGB1555", /* StrName */
210 GL_RGBA
, /* BaseFormat */
211 GL_UNSIGNED_NORMALIZED
, /* DataType */
212 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
213 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
214 1, 1, 2 /* BlockWidth/Height,Bytes */
217 MESA_FORMAT_ARGB1555_REV
, /* Name */
218 "MESA_FORMAT_ARGB1555_REV", /* StrName */
219 GL_RGBA
, /* BaseFormat */
220 GL_UNSIGNED_NORMALIZED
, /* DataType */
221 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
222 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
223 1, 1, 2 /* BlockWidth/Height,Bytes */
226 MESA_FORMAT_AL88
, /* Name */
227 "MESA_FORMAT_AL88", /* StrName */
228 GL_LUMINANCE_ALPHA
, /* BaseFormat */
229 GL_UNSIGNED_NORMALIZED
, /* DataType */
230 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
231 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
232 1, 1, 2 /* BlockWidth/Height,Bytes */
235 MESA_FORMAT_AL88_REV
, /* Name */
236 "MESA_FORMAT_AL88_REV", /* StrName */
237 GL_LUMINANCE_ALPHA
, /* BaseFormat */
238 GL_UNSIGNED_NORMALIZED
, /* DataType */
239 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
240 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
241 1, 1, 2 /* BlockWidth/Height,Bytes */
244 MESA_FORMAT_AL1616
, /* Name */
245 "MESA_FORMAT_AL1616", /* StrName */
246 GL_LUMINANCE_ALPHA
, /* BaseFormat */
247 GL_UNSIGNED_NORMALIZED
, /* DataType */
248 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
249 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
250 1, 1, 4 /* BlockWidth/Height,Bytes */
253 MESA_FORMAT_AL1616_REV
, /* Name */
254 "MESA_FORMAT_AL1616_REV", /* StrName */
255 GL_LUMINANCE_ALPHA
, /* BaseFormat */
256 GL_UNSIGNED_NORMALIZED
, /* DataType */
257 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
258 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
259 1, 1, 4 /* BlockWidth/Height,Bytes */
262 MESA_FORMAT_RGB332
, /* Name */
263 "MESA_FORMAT_RGB332", /* StrName */
264 GL_RGB
, /* BaseFormat */
265 GL_UNSIGNED_NORMALIZED
, /* DataType */
266 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
267 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
268 1, 1, 1 /* BlockWidth/Height,Bytes */
271 MESA_FORMAT_A8
, /* Name */
272 "MESA_FORMAT_A8", /* StrName */
273 GL_ALPHA
, /* BaseFormat */
274 GL_UNSIGNED_NORMALIZED
, /* DataType */
275 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
276 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
277 1, 1, 1 /* BlockWidth/Height,Bytes */
280 MESA_FORMAT_L8
, /* Name */
281 "MESA_FORMAT_L8", /* StrName */
282 GL_LUMINANCE
, /* BaseFormat */
283 GL_UNSIGNED_NORMALIZED
, /* DataType */
284 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
285 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
286 1, 1, 1 /* BlockWidth/Height,Bytes */
289 MESA_FORMAT_I8
, /* Name */
290 "MESA_FORMAT_I8", /* StrName */
291 GL_INTENSITY
, /* BaseFormat */
292 GL_UNSIGNED_NORMALIZED
, /* DataType */
293 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
294 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
295 1, 1, 1 /* BlockWidth/Height,Bytes */
298 MESA_FORMAT_CI8
, /* Name */
299 "MESA_FORMAT_CI8", /* StrName */
300 GL_COLOR_INDEX
, /* BaseFormat */
301 GL_UNSIGNED_INT
, /* DataType */
302 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
303 0, 0, 8, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
304 1, 1, 1 /* BlockWidth/Height,Bytes */
307 MESA_FORMAT_YCBCR
, /* Name */
308 "MESA_FORMAT_YCBCR", /* StrName */
309 GL_YCBCR_MESA
, /* BaseFormat */
310 GL_UNSIGNED_NORMALIZED
, /* DataType */
311 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
312 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
313 1, 1, 2 /* BlockWidth/Height,Bytes */
316 MESA_FORMAT_YCBCR_REV
, /* Name */
317 "MESA_FORMAT_YCBCR_REV", /* StrName */
318 GL_YCBCR_MESA
, /* BaseFormat */
319 GL_UNSIGNED_NORMALIZED
, /* DataType */
320 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
321 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
322 1, 1, 2 /* BlockWidth/Height,Bytes */
325 MESA_FORMAT_Z24_S8
, /* Name */
326 "MESA_FORMAT_Z24_S8", /* StrName */
327 GL_DEPTH_STENCIL
, /* BaseFormat */
328 GL_UNSIGNED_INT
, /* DataType */
329 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
330 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
331 1, 1, 4 /* BlockWidth/Height,Bytes */
334 MESA_FORMAT_S8_Z24
, /* Name */
335 "MESA_FORMAT_S8_Z24", /* StrName */
336 GL_DEPTH_STENCIL
, /* BaseFormat */
337 GL_UNSIGNED_INT
, /* DataType */
338 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
339 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
340 1, 1, 4 /* BlockWidth/Height,Bytes */
343 MESA_FORMAT_Z16
, /* Name */
344 "MESA_FORMAT_Z16", /* StrName */
345 GL_DEPTH_COMPONENT
, /* BaseFormat */
346 GL_UNSIGNED_INT
, /* DataType */
347 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
348 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
349 1, 1, 2 /* BlockWidth/Height,Bytes */
352 MESA_FORMAT_X8_Z24
, /* Name */
353 "MESA_FORMAT_X8_Z24", /* StrName */
354 GL_DEPTH_COMPONENT
, /* BaseFormat */
355 GL_UNSIGNED_INT
, /* DataType */
356 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
357 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
358 1, 1, 4 /* BlockWidth/Height,Bytes */
361 MESA_FORMAT_Z24_X8
, /* Name */
362 "MESA_FORMAT_Z24_X8", /* StrName */
363 GL_DEPTH_COMPONENT
, /* BaseFormat */
364 GL_UNSIGNED_INT
, /* DataType */
365 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
366 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
367 1, 1, 4 /* BlockWidth/Height,Bytes */
370 MESA_FORMAT_Z32
, /* Name */
371 "MESA_FORMAT_Z32", /* StrName */
372 GL_DEPTH_COMPONENT
, /* BaseFormat */
373 GL_UNSIGNED_INT
, /* DataType */
374 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
375 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
376 1, 1, 4 /* BlockWidth/Height,Bytes */
379 MESA_FORMAT_S8
, /* Name */
380 "MESA_FORMAT_S8", /* StrName */
381 GL_STENCIL_INDEX
, /* BaseFormat */
382 GL_UNSIGNED_INT
, /* DataType */
383 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
384 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
385 1, 1, 1 /* BlockWidth/Height,Bytes */
391 GL_UNSIGNED_NORMALIZED
,
398 "MESA_FORMAT_SRGBA8",
400 GL_UNSIGNED_NORMALIZED
,
407 "MESA_FORMAT_SARGB8",
409 GL_UNSIGNED_NORMALIZED
,
418 GL_UNSIGNED_NORMALIZED
,
427 GL_UNSIGNED_NORMALIZED
,
433 MESA_FORMAT_SRGB_DXT1
, /* Name */
434 "MESA_FORMAT_SRGB_DXT1", /* StrName */
435 GL_RGB
, /* BaseFormat */
436 GL_UNSIGNED_NORMALIZED
, /* DataType */
437 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
438 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
439 4, 4, 8 /* 8 bytes per 4x4 block */
442 MESA_FORMAT_SRGBA_DXT1
,
443 "MESA_FORMAT_SRGBA_DXT1",
445 GL_UNSIGNED_NORMALIZED
,
448 4, 4, 8 /* 8 bytes per 4x4 block */
451 MESA_FORMAT_SRGBA_DXT3
,
452 "MESA_FORMAT_SRGBA_DXT3",
454 GL_UNSIGNED_NORMALIZED
,
457 4, 4, 16 /* 16 bytes per 4x4 block */
460 MESA_FORMAT_SRGBA_DXT5
,
461 "MESA_FORMAT_SRGBA_DXT5",
463 GL_UNSIGNED_NORMALIZED
,
466 4, 4, 16 /* 16 bytes per 4x4 block */
470 MESA_FORMAT_RGB_FXT1
,
471 "MESA_FORMAT_RGB_FXT1",
473 GL_UNSIGNED_NORMALIZED
,
474 4, 4, 4, 0, /* approx Red/Green/BlueBits */
476 8, 4, 16 /* 16 bytes per 8x4 block */
479 MESA_FORMAT_RGBA_FXT1
,
480 "MESA_FORMAT_RGBA_FXT1",
482 GL_UNSIGNED_NORMALIZED
,
483 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
485 8, 4, 16 /* 16 bytes per 8x4 block */
489 MESA_FORMAT_RGB_DXT1
, /* Name */
490 "MESA_FORMAT_RGB_DXT1", /* StrName */
491 GL_RGB
, /* BaseFormat */
492 GL_UNSIGNED_NORMALIZED
, /* DataType */
493 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
494 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
495 4, 4, 8 /* 8 bytes per 4x4 block */
498 MESA_FORMAT_RGBA_DXT1
,
499 "MESA_FORMAT_RGBA_DXT1",
501 GL_UNSIGNED_NORMALIZED
,
504 4, 4, 8 /* 8 bytes per 4x4 block */
507 MESA_FORMAT_RGBA_DXT3
,
508 "MESA_FORMAT_RGBA_DXT3",
510 GL_UNSIGNED_NORMALIZED
,
513 4, 4, 16 /* 16 bytes per 4x4 block */
516 MESA_FORMAT_RGBA_DXT5
,
517 "MESA_FORMAT_RGBA_DXT5",
519 GL_UNSIGNED_NORMALIZED
,
522 4, 4, 16 /* 16 bytes per 4x4 block */
525 MESA_FORMAT_RGBA_FLOAT32
,
526 "MESA_FORMAT_RGBA_FLOAT32",
534 MESA_FORMAT_RGBA_FLOAT16
,
535 "MESA_FORMAT_RGBA_FLOAT16",
543 MESA_FORMAT_RGB_FLOAT32
,
544 "MESA_FORMAT_RGB_FLOAT32",
552 MESA_FORMAT_RGB_FLOAT16
,
553 "MESA_FORMAT_RGB_FLOAT16",
561 MESA_FORMAT_ALPHA_FLOAT32
,
562 "MESA_FORMAT_ALPHA_FLOAT32",
570 MESA_FORMAT_ALPHA_FLOAT16
,
571 "MESA_FORMAT_ALPHA_FLOAT16",
579 MESA_FORMAT_LUMINANCE_FLOAT32
,
580 "MESA_FORMAT_LUMINANCE_FLOAT32",
588 MESA_FORMAT_LUMINANCE_FLOAT16
,
589 "MESA_FORMAT_LUMINANCE_FLOAT16",
597 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32
,
598 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
606 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16
,
607 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
615 MESA_FORMAT_INTENSITY_FLOAT32
,
616 "MESA_FORMAT_INTENSITY_FLOAT32",
624 MESA_FORMAT_INTENSITY_FLOAT16
,
625 "MESA_FORMAT_INTENSITY_FLOAT16",
636 GL_SIGNED_NORMALIZED
,
642 MESA_FORMAT_SIGNED_RGBA8888
,
643 "MESA_FORMAT_SIGNED_RGBA8888",
645 GL_SIGNED_NORMALIZED
,
651 MESA_FORMAT_SIGNED_RGBA8888_REV
,
652 "MESA_FORMAT_SIGNED_RGBA8888_REV",
654 GL_SIGNED_NORMALIZED
,
660 MESA_FORMAT_SIGNED_RGBA_16
,
661 "MESA_FORMAT_SIGNED_RGBA_16",
663 GL_SIGNED_NORMALIZED
,
672 static const struct gl_format_info
*
673 _mesa_get_format_info(gl_format format
)
675 const struct gl_format_info
*info
= &format_info
[format
];
676 assert(info
->Name
== format
);
681 /** Return string name of format (for debugging) */
683 _mesa_get_format_name(gl_format format
)
685 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
686 ASSERT(info
->BytesPerBlock
);
687 return info
->StrName
;
693 * Return bytes needed to store a block of pixels in the given format.
694 * Normally, a block is 1x1 (a single pixel). But for compressed formats
695 * a block may be 4x4 or 8x4, etc.
698 _mesa_get_format_bytes(gl_format format
)
700 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
701 ASSERT(info
->BytesPerBlock
);
702 return info
->BytesPerBlock
;
707 * Return bits per component for the given format.
708 * \param format one of MESA_FORMAT_x
709 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
712 _mesa_get_format_bits(gl_format format
, GLenum pname
)
714 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
718 case GL_TEXTURE_RED_SIZE
:
719 case GL_RENDERBUFFER_RED_SIZE_EXT
:
720 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
721 return info
->RedBits
;
723 case GL_TEXTURE_GREEN_SIZE
:
724 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
725 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
726 return info
->GreenBits
;
728 case GL_TEXTURE_BLUE_SIZE
:
729 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
730 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
731 return info
->BlueBits
;
733 case GL_TEXTURE_ALPHA_SIZE
:
734 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
735 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
736 return info
->AlphaBits
;
737 case GL_TEXTURE_INTENSITY_SIZE
:
738 return info
->IntensityBits
;
739 case GL_TEXTURE_LUMINANCE_SIZE
:
740 return info
->LuminanceBits
;
742 case GL_TEXTURE_INDEX_SIZE_EXT
:
743 return info
->IndexBits
;
745 case GL_TEXTURE_DEPTH_SIZE_ARB
:
746 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
747 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
748 return info
->DepthBits
;
749 case GL_STENCIL_BITS
:
750 case GL_TEXTURE_STENCIL_SIZE_EXT
:
751 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
752 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
753 return info
->StencilBits
;
755 _mesa_problem(NULL
, "bad pname in _mesa_get_format_bits()");
762 * Return the data type (or more specifically, the data representation)
763 * for the given format.
764 * The return value will be one of:
765 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
766 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
767 * GL_UNSIGNED_INT = an ordinary unsigned integer
768 * GL_FLOAT = an ordinary float
771 _mesa_get_format_datatype(gl_format format
)
773 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
774 return info
->DataType
;
779 * Return the basic format for the given type. The result will be
780 * one of GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA,
781 * GL_INTENSITY, GL_YCBCR_MESA, GL_COLOR_INDEX, GL_DEPTH_COMPONENT,
782 * GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
785 _mesa_get_format_base_format(gl_format format
)
787 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
788 return info
->BaseFormat
;
793 * Return the block size (in pixels) for the given format. Normally
794 * the block size is 1x1. But compressed formats will have block sizes
795 * of 4x4 or 8x4 pixels, etc.
796 * \param bw returns block width in pixels
797 * \param bh returns block height in pixels
800 _mesa_get_format_block_size(gl_format format
, GLuint
*bw
, GLuint
*bh
)
802 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
803 *bw
= info
->BlockWidth
;
804 *bh
= info
->BlockHeight
;
808 /** Is the given format a compressed format? */
810 _mesa_is_format_compressed(gl_format format
)
812 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
813 return info
->BlockWidth
> 1 || info
->BlockHeight
> 1;
818 * Return color encoding for given format.
819 * \return GL_LINEAR or GL_SRGB
822 _mesa_get_format_color_encoding(gl_format format
)
824 /* XXX this info should be encoded in gl_format_info */
826 case MESA_FORMAT_SRGB8
:
827 case MESA_FORMAT_SRGBA8
:
828 case MESA_FORMAT_SARGB8
:
829 case MESA_FORMAT_SL8
:
830 case MESA_FORMAT_SLA8
:
831 case MESA_FORMAT_SRGB_DXT1
:
832 case MESA_FORMAT_SRGBA_DXT1
:
833 case MESA_FORMAT_SRGBA_DXT3
:
834 case MESA_FORMAT_SRGBA_DXT5
:
843 * Return number of bytes needed to store an image of the given size
844 * in the given format.
847 _mesa_format_image_size(gl_format format
, GLsizei width
,
848 GLsizei height
, GLsizei depth
)
850 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
851 /* Strictly speaking, a conditional isn't needed here */
852 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1) {
853 /* compressed format */
854 const GLuint bw
= info
->BlockWidth
, bh
= info
->BlockHeight
;
855 const GLuint wblocks
= (width
+ bw
- 1) / bw
;
856 const GLuint hblocks
= (height
+ bh
- 1) / bh
;
857 const GLuint sz
= wblocks
* hblocks
* info
->BytesPerBlock
;
862 const GLuint sz
= width
* height
* depth
* info
->BytesPerBlock
;
870 _mesa_format_row_stride(gl_format format
, GLsizei width
)
872 const struct gl_format_info
*info
= _mesa_get_format_info(format
);
873 /* Strictly speaking, a conditional isn't needed here */
874 if (info
->BlockWidth
> 1 || info
->BlockHeight
> 1) {
875 /* compressed format */
876 const GLuint bw
= info
->BlockWidth
;
877 const GLuint wblocks
= (width
+ bw
- 1) / bw
;
878 const GLint stride
= wblocks
* info
->BytesPerBlock
;
882 const GLint stride
= width
* info
->BytesPerBlock
;
890 * Do sanity checking of the format info table.
893 _mesa_test_formats(void)
897 assert(Elements(format_info
) == MESA_FORMAT_COUNT
);
899 for (i
= 0; i
< MESA_FORMAT_COUNT
; i
++) {
900 const struct gl_format_info
*info
= _mesa_get_format_info(i
);
903 assert(info
->Name
== i
);
905 if (info
->Name
== MESA_FORMAT_NONE
)
908 if (info
->BlockWidth
== 1 && info
->BlockHeight
== 1) {
909 if (info
->RedBits
> 0) {
910 GLuint t
= info
->RedBits
+ info
->GreenBits
911 + info
->BlueBits
+ info
->AlphaBits
;
912 assert(t
/ 8 == info
->BytesPerBlock
);
916 assert(info
->DataType
== GL_UNSIGNED_NORMALIZED
||
917 info
->DataType
== GL_SIGNED_NORMALIZED
||
918 info
->DataType
== GL_UNSIGNED_INT
||
919 info
->DataType
== GL_FLOAT
);
921 if (info
->BaseFormat
== GL_RGB
) {
922 assert(info
->RedBits
> 0);
923 assert(info
->GreenBits
> 0);
924 assert(info
->BlueBits
> 0);
925 assert(info
->AlphaBits
== 0);
926 assert(info
->LuminanceBits
== 0);
927 assert(info
->IntensityBits
== 0);
929 else if (info
->BaseFormat
== GL_RGBA
) {
930 assert(info
->RedBits
> 0);
931 assert(info
->GreenBits
> 0);
932 assert(info
->BlueBits
> 0);
933 assert(info
->AlphaBits
> 0);
934 assert(info
->LuminanceBits
== 0);
935 assert(info
->IntensityBits
== 0);
937 else if (info
->BaseFormat
== GL_LUMINANCE
) {
938 assert(info
->RedBits
== 0);
939 assert(info
->GreenBits
== 0);
940 assert(info
->BlueBits
== 0);
941 assert(info
->AlphaBits
== 0);
942 assert(info
->LuminanceBits
> 0);
943 assert(info
->IntensityBits
== 0);
945 else if (info
->BaseFormat
== GL_INTENSITY
) {
946 assert(info
->RedBits
== 0);
947 assert(info
->GreenBits
== 0);
948 assert(info
->BlueBits
== 0);
949 assert(info
->AlphaBits
== 0);
950 assert(info
->LuminanceBits
== 0);
951 assert(info
->IntensityBits
> 0);
960 * Return datatype and number of components per texel for the given gl_format.
961 * Only used for mipmap generation code.
964 _mesa_format_to_type_and_comps(gl_format format
,
965 GLenum
*datatype
, GLuint
*comps
)
968 case MESA_FORMAT_RGBA8888
:
969 case MESA_FORMAT_RGBA8888_REV
:
970 case MESA_FORMAT_ARGB8888
:
971 case MESA_FORMAT_ARGB8888_REV
:
972 case MESA_FORMAT_XRGB8888
:
973 *datatype
= GL_UNSIGNED_BYTE
;
976 case MESA_FORMAT_RGB888
:
977 case MESA_FORMAT_BGR888
:
978 *datatype
= GL_UNSIGNED_BYTE
;
981 case MESA_FORMAT_RGB565
:
982 case MESA_FORMAT_RGB565_REV
:
983 *datatype
= GL_UNSIGNED_SHORT_5_6_5
;
987 case MESA_FORMAT_ARGB4444
:
988 case MESA_FORMAT_ARGB4444_REV
:
989 *datatype
= GL_UNSIGNED_SHORT_4_4_4_4
;
993 case MESA_FORMAT_ARGB1555
:
994 case MESA_FORMAT_ARGB1555_REV
:
995 *datatype
= GL_UNSIGNED_SHORT_1_5_5_5_REV
;
999 case MESA_FORMAT_AL88
:
1000 case MESA_FORMAT_AL88_REV
:
1001 *datatype
= GL_UNSIGNED_BYTE
;
1005 case MESA_FORMAT_AL1616
:
1006 case MESA_FORMAT_AL1616_REV
:
1007 *datatype
= GL_UNSIGNED_SHORT
;
1011 case MESA_FORMAT_RGB332
:
1012 *datatype
= GL_UNSIGNED_BYTE_3_3_2
;
1016 case MESA_FORMAT_A8
:
1017 case MESA_FORMAT_L8
:
1018 case MESA_FORMAT_I8
:
1019 case MESA_FORMAT_CI8
:
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_Z24_S8
:
1031 *datatype
= GL_UNSIGNED_INT
;
1032 *comps
= 1; /* XXX OK? */
1035 case MESA_FORMAT_S8_Z24
:
1036 *datatype
= GL_UNSIGNED_INT
;
1037 *comps
= 1; /* XXX OK? */
1040 case MESA_FORMAT_Z16
:
1041 *datatype
= GL_UNSIGNED_SHORT
;
1045 case MESA_FORMAT_X8_Z24
:
1046 *datatype
= GL_UNSIGNED_INT
;
1050 case MESA_FORMAT_Z24_X8
:
1051 *datatype
= GL_UNSIGNED_INT
;
1055 case MESA_FORMAT_Z32
:
1056 *datatype
= GL_UNSIGNED_INT
;
1060 case MESA_FORMAT_DUDV8
:
1061 *datatype
= GL_BYTE
;
1065 case MESA_FORMAT_SIGNED_RGBA8888
:
1066 case MESA_FORMAT_SIGNED_RGBA8888_REV
:
1067 *datatype
= GL_BYTE
;
1070 case MESA_FORMAT_SIGNED_RGBA_16
:
1071 *datatype
= GL_SHORT
;
1075 #if FEATURE_EXT_texture_sRGB
1076 case MESA_FORMAT_SRGB8
:
1077 *datatype
= GL_UNSIGNED_BYTE
;
1080 case MESA_FORMAT_SRGBA8
:
1081 case MESA_FORMAT_SARGB8
:
1082 *datatype
= GL_UNSIGNED_BYTE
;
1085 case MESA_FORMAT_SL8
:
1086 *datatype
= GL_UNSIGNED_BYTE
;
1089 case MESA_FORMAT_SLA8
:
1090 *datatype
= GL_UNSIGNED_BYTE
;
1095 #if FEATURE_texture_fxt1
1096 case MESA_FORMAT_RGB_FXT1
:
1097 case MESA_FORMAT_RGBA_FXT1
:
1099 #if FEATURE_texture_s3tc
1100 case MESA_FORMAT_RGB_DXT1
:
1101 case MESA_FORMAT_RGBA_DXT1
:
1102 case MESA_FORMAT_RGBA_DXT3
:
1103 case MESA_FORMAT_RGBA_DXT5
:
1104 #if FEATURE_EXT_texture_sRGB
1105 case MESA_FORMAT_SRGB_DXT1
:
1106 case MESA_FORMAT_SRGBA_DXT1
:
1107 case MESA_FORMAT_SRGBA_DXT3
:
1108 case MESA_FORMAT_SRGBA_DXT5
:
1110 /* XXX generate error instead? */
1111 *datatype
= GL_UNSIGNED_BYTE
;
1116 case MESA_FORMAT_RGBA_FLOAT32
:
1117 *datatype
= GL_FLOAT
;
1120 case MESA_FORMAT_RGBA_FLOAT16
:
1121 *datatype
= GL_HALF_FLOAT_ARB
;
1124 case MESA_FORMAT_RGB_FLOAT32
:
1125 *datatype
= GL_FLOAT
;
1128 case MESA_FORMAT_RGB_FLOAT16
:
1129 *datatype
= GL_HALF_FLOAT_ARB
;
1132 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32
:
1133 *datatype
= GL_FLOAT
;
1136 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16
:
1137 *datatype
= GL_HALF_FLOAT_ARB
;
1140 case MESA_FORMAT_ALPHA_FLOAT32
:
1141 case MESA_FORMAT_LUMINANCE_FLOAT32
:
1142 case MESA_FORMAT_INTENSITY_FLOAT32
:
1143 *datatype
= GL_FLOAT
;
1146 case MESA_FORMAT_ALPHA_FLOAT16
:
1147 case MESA_FORMAT_LUMINANCE_FLOAT16
:
1148 case MESA_FORMAT_INTENSITY_FLOAT16
:
1149 *datatype
= GL_HALF_FLOAT_ARB
;
1154 _mesa_problem(NULL
, "bad format in _mesa_format_to_type_and_comps");