2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (c) 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.
30 * Texel fetch/store functions
32 * \author Gareth Hughes
36 #include "main/colormac.h"
37 #include "main/macros.h"
38 #include "main/texcompress.h"
39 #include "main/texcompress_fxt1.h"
40 #include "main/texcompress_s3tc.h"
41 #include "main/texcompress_rgtc.h"
42 #include "main/texcompress_etc.h"
43 #include "main/teximage.h"
44 #include "main/samplerobj.h"
45 #include "s_context.h"
46 #include "s_texfetch.h"
47 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
48 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
49 #include "util/format_srgb.h"
52 /* Texel fetch routines for all supported formats
55 #include "s_texfetch_tmp.h"
58 #include "s_texfetch_tmp.h"
61 #include "s_texfetch_tmp.h"
65 * All compressed texture texel fetching is done though this function.
66 * Basically just call a core-Mesa texel fetch function.
69 fetch_compressed(const struct swrast_texture_image
*swImage
,
70 GLint i
, GLint j
, GLint k
, GLfloat
*texel
)
72 /* The FetchCompressedTexel function takes an integer pixel rowstride,
73 * while the image's rowstride is bytes per row of blocks.
76 GLuint texelBytes
= _mesa_get_format_bytes(swImage
->Base
.TexFormat
);
77 _mesa_get_format_block_size(swImage
->Base
.TexFormat
, &bw
, &bh
);
78 assert(swImage
->RowStride
* bw
% texelBytes
== 0);
80 swImage
->FetchCompressedTexel(swImage
->ImageSlices
[k
],
81 swImage
->RowStride
* bw
/ texelBytes
,
88 * Null texel fetch function.
90 * Have to have this so the FetchTexel function pointer is never NULL.
92 static void fetch_null_texelf( const struct swrast_texture_image
*texImage
,
93 GLint i
, GLint j
, GLint k
, GLfloat
*texel
)
95 (void) texImage
; (void) i
; (void) j
; (void) k
;
100 _mesa_warning(NULL
, "fetch_null_texelf() called!");
104 #define FETCH_FUNCS(NAME) \
106 MESA_FORMAT_ ## NAME, \
107 fetch_texel_1d_ ## NAME, \
108 fetch_texel_2d_ ## NAME, \
109 fetch_texel_3d_ ## NAME, \
112 #define FETCH_NULL(NAME) \
114 MESA_FORMAT_ ## NAME, \
121 * Table to map MESA_FORMAT_ to texel fetch/store funcs.
125 FetchTexelFunc Fetch1D
;
126 FetchTexelFunc Fetch2D
;
127 FetchTexelFunc Fetch3D
;
138 /* Packed unorm formats */
139 FETCH_FUNCS(A8B8G8R8_UNORM
),
140 FETCH_FUNCS(X8B8G8R8_UNORM
),
141 FETCH_FUNCS(R8G8B8A8_UNORM
),
142 FETCH_FUNCS(R8G8B8X8_UNORM
),
143 FETCH_FUNCS(B8G8R8A8_UNORM
),
144 FETCH_FUNCS(B8G8R8X8_UNORM
),
145 FETCH_FUNCS(A8R8G8B8_UNORM
),
146 FETCH_FUNCS(X8R8G8B8_UNORM
),
147 FETCH_FUNCS(L16A16_UNORM
),
148 FETCH_FUNCS(A16L16_UNORM
),
149 FETCH_FUNCS(B5G6R5_UNORM
),
150 FETCH_FUNCS(R5G6B5_UNORM
),
151 FETCH_FUNCS(B4G4R4A4_UNORM
),
152 FETCH_NULL(B4G4R4X4_UNORM
),
153 FETCH_FUNCS(A4R4G4B4_UNORM
),
154 FETCH_FUNCS(A1B5G5R5_UNORM
),
155 FETCH_FUNCS(B5G5R5A1_UNORM
),
156 FETCH_NULL(B5G5R5X1_UNORM
),
157 FETCH_FUNCS(A1R5G5B5_UNORM
),
158 FETCH_FUNCS(L8A8_UNORM
),
159 FETCH_FUNCS(A8L8_UNORM
),
160 FETCH_FUNCS(R8G8_UNORM
),
161 FETCH_FUNCS(G8R8_UNORM
),
162 FETCH_FUNCS(L4A4_UNORM
),
163 FETCH_FUNCS(B2G3R3_UNORM
),
164 FETCH_FUNCS(R16G16_UNORM
),
165 FETCH_FUNCS(G16R16_UNORM
),
166 FETCH_FUNCS(B10G10R10A2_UNORM
),
167 FETCH_NULL(B10G10R10X2_UNORM
),
168 FETCH_FUNCS(R10G10B10A2_UNORM
),
169 FETCH_FUNCS(S8_UINT_Z24_UNORM
),
171 MESA_FORMAT_X8_UINT_Z24_UNORM
,
172 fetch_texel_1d_S8_UINT_Z24_UNORM
,
173 fetch_texel_2d_S8_UINT_Z24_UNORM
,
174 fetch_texel_3d_S8_UINT_Z24_UNORM
176 FETCH_FUNCS(Z24_UNORM_S8_UINT
),
178 MESA_FORMAT_Z24_UNORM_X8_UINT
,
179 fetch_texel_1d_Z24_UNORM_S8_UINT
,
180 fetch_texel_2d_Z24_UNORM_S8_UINT
,
181 fetch_texel_3d_Z24_UNORM_S8_UINT
184 FETCH_FUNCS(YCBCR_REV
),
186 /* Array unorm formats */
187 FETCH_FUNCS(A_UNORM8
),
188 FETCH_FUNCS(A_UNORM16
),
189 FETCH_FUNCS(L_UNORM8
),
190 FETCH_FUNCS(L_UNORM16
),
191 FETCH_FUNCS(I_UNORM8
),
192 FETCH_FUNCS(I_UNORM16
),
193 FETCH_FUNCS(R_UNORM8
),
194 FETCH_FUNCS(R_UNORM16
),
195 FETCH_FUNCS(BGR_UNORM8
),
196 FETCH_FUNCS(RGB_UNORM8
),
197 FETCH_FUNCS(RGBA_UNORM16
),
198 FETCH_FUNCS(RGBX_UNORM16
),
199 FETCH_FUNCS(Z_UNORM16
),
200 FETCH_FUNCS(Z_UNORM32
),
203 /* Packed signed/normalized formats */
204 FETCH_FUNCS(A8B8G8R8_SNORM
),
205 FETCH_FUNCS(X8B8G8R8_SNORM
),
206 FETCH_FUNCS(R8G8B8A8_SNORM
),
207 FETCH_NULL(R8G8B8X8_SNORM
),
208 FETCH_FUNCS(R16G16_SNORM
),
209 FETCH_NULL(G16R16_SNORM
),
210 FETCH_FUNCS(R8G8_SNORM
),
211 FETCH_NULL(G8R8_SNORM
),
212 FETCH_FUNCS(L8A8_SNORM
),
213 FETCH_FUNCS(A8L8_SNORM
),
215 /* Array signed/normalized formats */
216 FETCH_FUNCS(A_SNORM8
),
217 FETCH_FUNCS(A_SNORM16
),
218 FETCH_FUNCS(L_SNORM8
),
219 FETCH_FUNCS(L_SNORM16
),
220 FETCH_FUNCS(I_SNORM8
),
221 FETCH_FUNCS(I_SNORM16
),
222 FETCH_FUNCS(R_SNORM8
),
223 FETCH_FUNCS(R_SNORM16
),
224 FETCH_FUNCS(LA_SNORM16
),
225 FETCH_FUNCS(RGB_SNORM16
),
226 FETCH_FUNCS(RGBA_SNORM16
),
227 FETCH_NULL(RGBX_SNORM16
),
229 /* Packed sRGB formats */
230 FETCH_FUNCS(A8B8G8R8_SRGB
),
231 FETCH_FUNCS(B8G8R8A8_SRGB
),
232 FETCH_FUNCS(A8R8G8B8_SRGB
),
233 FETCH_NULL(B8G8R8X8_SRGB
),
234 FETCH_NULL(X8R8G8B8_SRGB
),
235 FETCH_FUNCS(R8G8B8A8_SRGB
),
236 FETCH_FUNCS(R8G8B8X8_SRGB
),
237 FETCH_FUNCS(X8B8G8R8_SRGB
),
238 FETCH_FUNCS(L8A8_SRGB
),
239 FETCH_FUNCS(A8L8_SRGB
),
241 /* Array sRGB formats */
242 FETCH_FUNCS(L_SRGB8
),
243 FETCH_FUNCS(BGR_SRGB8
),
245 /* Packed float formats */
246 FETCH_FUNCS(R9G9B9E5_FLOAT
),
247 FETCH_FUNCS(R11G11B10_FLOAT
),
248 FETCH_FUNCS(Z32_FLOAT_S8X24_UINT
),
250 /* Array float formats */
251 FETCH_FUNCS(A_FLOAT16
),
252 FETCH_FUNCS(A_FLOAT32
),
253 FETCH_FUNCS(L_FLOAT16
),
254 FETCH_FUNCS(L_FLOAT32
),
255 FETCH_FUNCS(LA_FLOAT16
),
256 FETCH_FUNCS(LA_FLOAT32
),
257 FETCH_FUNCS(I_FLOAT16
),
258 FETCH_FUNCS(I_FLOAT32
),
259 FETCH_FUNCS(R_FLOAT16
),
260 FETCH_FUNCS(R_FLOAT32
),
261 FETCH_FUNCS(RG_FLOAT16
),
262 FETCH_FUNCS(RG_FLOAT32
),
263 FETCH_FUNCS(RGB_FLOAT16
),
264 FETCH_FUNCS(RGB_FLOAT32
),
265 FETCH_FUNCS(RGBA_FLOAT16
),
266 FETCH_FUNCS(RGBA_FLOAT32
),
267 FETCH_FUNCS(RGBX_FLOAT16
),
268 FETCH_FUNCS(RGBX_FLOAT32
),
270 MESA_FORMAT_Z_FLOAT32
,
271 fetch_texel_1d_R_FLOAT32
, /* Reuse the R32F functions. */
272 fetch_texel_2d_R_FLOAT32
,
273 fetch_texel_3d_R_FLOAT32
276 /* Packed signed/unsigned non-normalized integer formats */
277 FETCH_NULL(B10G10R10A2_UINT
),
278 FETCH_NULL(R10G10B10A2_UINT
),
280 /* Array signed/unsigned non-normalized integer formats */
282 FETCH_NULL(A_UINT16
),
283 FETCH_NULL(A_UINT32
),
285 FETCH_NULL(A_SINT16
),
286 FETCH_NULL(A_SINT32
),
288 FETCH_NULL(I_UINT16
),
289 FETCH_NULL(I_UINT32
),
291 FETCH_NULL(I_SINT16
),
292 FETCH_NULL(I_SINT32
),
294 FETCH_NULL(L_UINT16
),
295 FETCH_NULL(L_UINT32
),
297 FETCH_NULL(L_SINT16
),
298 FETCH_NULL(L_SINT32
),
299 FETCH_NULL(LA_UINT8
),
300 FETCH_NULL(LA_UINT16
),
301 FETCH_NULL(LA_UINT32
),
302 FETCH_NULL(LA_SINT8
),
303 FETCH_NULL(LA_SINT16
),
304 FETCH_NULL(LA_SINT32
),
306 FETCH_NULL(R_UINT16
),
307 FETCH_NULL(R_UINT32
),
309 FETCH_NULL(R_SINT16
),
310 FETCH_NULL(R_SINT32
),
311 FETCH_NULL(RG_UINT8
),
312 FETCH_NULL(RG_UINT16
),
313 FETCH_NULL(RG_UINT32
),
314 FETCH_NULL(RG_SINT8
),
315 FETCH_NULL(RG_SINT16
),
316 FETCH_NULL(RG_SINT32
),
317 FETCH_NULL(RGB_UINT8
),
318 FETCH_NULL(RGB_UINT16
),
319 FETCH_NULL(RGB_UINT32
),
320 FETCH_NULL(RGB_SINT8
),
321 FETCH_NULL(RGB_SINT16
),
322 FETCH_NULL(RGB_SINT32
),
323 FETCH_FUNCS(RGBA_UINT8
),
324 FETCH_FUNCS(RGBA_UINT16
),
325 FETCH_FUNCS(RGBA_UINT32
),
326 FETCH_FUNCS(RGBA_SINT8
),
327 FETCH_FUNCS(RGBA_SINT16
),
328 FETCH_FUNCS(RGBA_SINT32
),
329 FETCH_NULL(RGBX_UINT8
),
330 FETCH_NULL(RGBX_UINT16
),
331 FETCH_NULL(RGBX_UINT32
),
332 FETCH_NULL(RGBX_SINT8
),
333 FETCH_NULL(RGBX_SINT16
),
334 FETCH_NULL(RGBX_SINT32
),
336 /* DXT compressed formats */
338 MESA_FORMAT_RGB_DXT1
,
344 MESA_FORMAT_RGBA_DXT1
,
350 MESA_FORMAT_RGBA_DXT3
,
356 MESA_FORMAT_RGBA_DXT5
,
362 /* DXT sRGB compressed formats */
364 MESA_FORMAT_SRGB_DXT1
,
370 MESA_FORMAT_SRGBA_DXT1
,
376 MESA_FORMAT_SRGBA_DXT3
,
382 MESA_FORMAT_SRGBA_DXT5
,
388 /* FXT1 compressed formats */
390 MESA_FORMAT_RGB_FXT1
,
396 MESA_FORMAT_RGBA_FXT1
,
402 /* RGTC compressed formats */
404 MESA_FORMAT_R_RGTC1_UNORM
,
410 MESA_FORMAT_R_RGTC1_SNORM
,
416 MESA_FORMAT_RG_RGTC2_UNORM
,
422 MESA_FORMAT_RG_RGTC2_SNORM
,
428 /* LATC1/2 compressed formats */
430 MESA_FORMAT_L_LATC1_UNORM
,
436 MESA_FORMAT_L_LATC1_SNORM
,
442 MESA_FORMAT_LA_LATC2_UNORM
,
448 MESA_FORMAT_LA_LATC2_SNORM
,
454 /* ETC1/2 compressed formats */
456 MESA_FORMAT_ETC1_RGB8
,
462 MESA_FORMAT_ETC2_RGB8
,
468 MESA_FORMAT_ETC2_SRGB8
,
474 MESA_FORMAT_ETC2_RGBA8_EAC
,
480 MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC
,
486 MESA_FORMAT_ETC2_R11_EAC
,
492 MESA_FORMAT_ETC2_RG11_EAC
,
498 MESA_FORMAT_ETC2_SIGNED_R11_EAC
,
504 MESA_FORMAT_ETC2_SIGNED_RG11_EAC
,
510 MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1
,
516 MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1
,
522 MESA_FORMAT_BPTC_RGBA_UNORM
,
528 MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM
,
534 MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT
,
540 MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT
,
549 * Initialize the texture image's FetchTexel methods.
552 set_fetch_functions(const struct gl_sampler_object
*samp
,
553 struct swrast_texture_image
*texImage
, GLuint dims
)
555 mesa_format format
= texImage
->Base
.TexFormat
;
558 /* check that the table entries are sorted by format name */
560 for (fmt
= 0; fmt
< MESA_FORMAT_COUNT
; fmt
++) {
561 assert(texfetch_funcs
[fmt
].Name
== fmt
);
565 STATIC_ASSERT(Elements(texfetch_funcs
) == MESA_FORMAT_COUNT
);
567 if (samp
->sRGBDecode
== GL_SKIP_DECODE_EXT
&&
568 _mesa_get_format_color_encoding(format
) == GL_SRGB
) {
569 format
= _mesa_get_srgb_format_linear(format
);
572 assert(format
< MESA_FORMAT_COUNT
);
576 texImage
->FetchTexel
= texfetch_funcs
[format
].Fetch1D
;
579 texImage
->FetchTexel
= texfetch_funcs
[format
].Fetch2D
;
582 texImage
->FetchTexel
= texfetch_funcs
[format
].Fetch3D
;
585 assert(!"Bad dims in set_fetch_functions()");
588 texImage
->FetchCompressedTexel
= _mesa_get_compressed_fetch_func(format
);
590 ASSERT(texImage
->FetchTexel
);
594 _mesa_update_fetch_functions(struct gl_context
*ctx
, GLuint unit
)
596 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[unit
]._Current
;
597 struct gl_sampler_object
*samp
;
604 samp
= _mesa_get_samplerobj(ctx
, unit
);
606 dims
= _mesa_get_texture_dimensions(texObj
->Target
);
608 for (face
= 0; face
< 6; face
++) {
609 for (i
= 0; i
< MAX_TEXTURE_LEVELS
; i
++) {
610 if (texObj
->Image
[face
][i
]) {
611 set_fetch_functions(samp
,
612 swrast_texture_image(texObj
->Image
[face
][i
]),