1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2013 LunarG, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Courtney Goeltzenleuchter <courtney@lunarg.com>
26 */
27
28
29 /**
30 * \file textureview.c
31 * GL_ARB_texture_view functions
32 */
33
34 #include "glheader.h"
35 #include "context.h"
36 #include "enums.h"
37
38 #include "macros.h"
39 #include "teximage.h"
40 #include "texobj.h"
41 #include "mipmap.h"
42 #include "texstorage.h"
43 #include "textureview.h"
44 #include "stdbool.h"
45 #include "mtypes.h"
46
47 /* Table 3.X.2 (Compatible internal formats for TextureView)
48 ---------------------------------------------------------------------------
49 | Class | Internal formats |
50 ---------------------------------------------------------------------------
51 | VIEW_CLASS_128_BITS | RGBA32F, RGBA32UI, RGBA32I |
52 ---------------------------------------------------------------------------
53 | VIEW_CLASS_96_BITS | RGB32F, RGB32UI, RGB32I |
54 ---------------------------------------------------------------------------
55 | VIEW_CLASS_64_BITS | RGBA16F, RG32F, RGBA16UI, RG32UI, RGBA16I, |
56 | | RG32I, RGBA16, RGBA16_SNORM |
57 ---------------------------------------------------------------------------
58 | VIEW_CLASS_48_BITS | RGB16, RGB16_SNORM, RGB16F, RGB16UI, RGB16I |
59 ---------------------------------------------------------------------------
60 | VIEW_CLASS_32_BITS | RG16F, R11F_G11F_B10F, R32F, |
61 | | RGB10_A2UI, RGBA8UI, RG16UI, R32UI, |
62 | | RGBA8I, RG16I, R32I, RGB10_A2, RGBA8, RG16, |
63 | | RGBA8_SNORM, RG16_SNORM, SRGB8_ALPHA8, RGB9_E5 |
64 ---------------------------------------------------------------------------
65 | VIEW_CLASS_24_BITS | RGB8, RGB8_SNORM, SRGB8, RGB8UI, RGB8I |
66 ---------------------------------------------------------------------------
67 | VIEW_CLASS_16_BITS | R16F, RG8UI, R16UI, RG8I, R16I, RG8, R16, |
68 | | RG8_SNORM, R16_SNORM |
69 ---------------------------------------------------------------------------
70 | VIEW_CLASS_8_BITS | R8UI, R8I, R8, R8_SNORM |
71 ---------------------------------------------------------------------------
72 | VIEW_CLASS_RGTC1_RED | COMPRESSED_RED_RGTC1, |
73 | | COMPRESSED_SIGNED_RED_RGTC1 |
74 ---------------------------------------------------------------------------
75 | VIEW_CLASS_RGTC2_RG | COMPRESSED_RG_RGTC2, |
76 | | COMPRESSED_SIGNED_RG_RGTC2 |
77 ---------------------------------------------------------------------------
78 | VIEW_CLASS_BPTC_UNORM | COMPRESSED_RGBA_BPTC_UNORM, |
79 | | COMPRESSED_SRGB_ALPHA_BPTC_UNORM |
80 ---------------------------------------------------------------------------
81 | VIEW_CLASS_BPTC_FLOAT | COMPRESSED_RGB_BPTC_SIGNED_FLOAT, |
82 | | COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT |
83 ---------------------------------------------------------------------------
84 */
85
86 #define VIEW_CLASS_GLES(x) (GL_VIEW_CLASS_BPTC_FLOAT + 1 + x)
87 #define VIEW_CLASS_EAC_R11 VIEW_CLASS_GLES(0)
88 #define VIEW_CLASS_EAC_RG11 VIEW_CLASS_GLES(1)
89 #define VIEW_CLASS_ETC2_RGB VIEW_CLASS_GLES(2)
90 #define VIEW_CLASS_ETC2_RGBA VIEW_CLASS_GLES(3)
91 #define VIEW_CLASS_ETC2_EAC_RGBA VIEW_CLASS_GLES(4)
92 #define VIEW_CLASS_ASTC_4x4_RGBA VIEW_CLASS_GLES(5)
93 #define VIEW_CLASS_ASTC_5x4_RGBA VIEW_CLASS_GLES(6)
94 #define VIEW_CLASS_ASTC_5x5_RGBA VIEW_CLASS_GLES(7)
95 #define VIEW_CLASS_ASTC_6x5_RGBA VIEW_CLASS_GLES(8)
96 #define VIEW_CLASS_ASTC_6x6_RGBA VIEW_CLASS_GLES(9)
97 #define VIEW_CLASS_ASTC_8x5_RGBA VIEW_CLASS_GLES(10)
98 #define VIEW_CLASS_ASTC_8x6_RGBA VIEW_CLASS_GLES(11)
99 #define VIEW_CLASS_ASTC_8x8_RGBA VIEW_CLASS_GLES(12)
100 #define VIEW_CLASS_ASTC_10x5_RGBA VIEW_CLASS_GLES(13)
101 #define VIEW_CLASS_ASTC_10x6_RGBA VIEW_CLASS_GLES(14)
102 #define VIEW_CLASS_ASTC_10x8_RGBA VIEW_CLASS_GLES(15)
103 #define VIEW_CLASS_ASTC_10x10_RGBA VIEW_CLASS_GLES(16)
104 #define VIEW_CLASS_ASTC_12x10_RGBA VIEW_CLASS_GLES(17)
105 #define VIEW_CLASS_ASTC_12x12_RGBA VIEW_CLASS_GLES(18)
106 #define VIEW_CLASS_ASTC_3x3x3_RGBA VIEW_CLASS_GLES(19)
107 #define VIEW_CLASS_ASTC_4x3x3_RGBA VIEW_CLASS_GLES(20)
108 #define VIEW_CLASS_ASTC_4x4x3_RGBA VIEW_CLASS_GLES(21)
109 #define VIEW_CLASS_ASTC_4x4x4_RGBA VIEW_CLASS_GLES(22)
110 #define VIEW_CLASS_ASTC_5x4x4_RGBA VIEW_CLASS_GLES(23)
111 #define VIEW_CLASS_ASTC_5x5x4_RGBA VIEW_CLASS_GLES(24)
112 #define VIEW_CLASS_ASTC_5x5x5_RGBA VIEW_CLASS_GLES(25)
113 #define VIEW_CLASS_ASTC_6x5x5_RGBA VIEW_CLASS_GLES(26)
114 #define VIEW_CLASS_ASTC_6x6x5_RGBA VIEW_CLASS_GLES(27)
115 #define VIEW_CLASS_ASTC_6x6x6_RGBA VIEW_CLASS_GLES(28)
116
117
118 struct internal_format_class_info {
119 GLenum view_class;
120 GLenum internal_format;
121 };
122 static const struct internal_format_class_info compatible_internal_formats[] = {
123 {GL_VIEW_CLASS_128_BITS, GL_RGBA32F},
124 {GL_VIEW_CLASS_128_BITS, GL_RGBA32UI},
125 {GL_VIEW_CLASS_128_BITS, GL_RGBA32I},
126 {GL_VIEW_CLASS_96_BITS, GL_RGB32F},
127 {GL_VIEW_CLASS_96_BITS, GL_RGB32UI},
128 {GL_VIEW_CLASS_96_BITS, GL_RGB32I},
129 {GL_VIEW_CLASS_64_BITS, GL_RGBA16F},
130 {GL_VIEW_CLASS_64_BITS, GL_RG32F},
131 {GL_VIEW_CLASS_64_BITS, GL_RGBA16UI},
132 {GL_VIEW_CLASS_64_BITS, GL_RG32UI},
133 {GL_VIEW_CLASS_64_BITS, GL_RGBA16I},
134 {GL_VIEW_CLASS_64_BITS, GL_RG32I},
135 {GL_VIEW_CLASS_64_BITS, GL_RGBA16},
136 {GL_VIEW_CLASS_64_BITS, GL_RGBA16_SNORM},
137 {GL_VIEW_CLASS_48_BITS, GL_RGB16},
138 {GL_VIEW_CLASS_48_BITS, GL_RGB16_SNORM},
139 {GL_VIEW_CLASS_48_BITS, GL_RGB16F},
140 {GL_VIEW_CLASS_48_BITS, GL_RGB16UI},
141 {GL_VIEW_CLASS_48_BITS, GL_RGB16I},
142 {GL_VIEW_CLASS_32_BITS, GL_RG16F},
143 {GL_VIEW_CLASS_32_BITS, GL_R11F_G11F_B10F},
144 {GL_VIEW_CLASS_32_BITS, GL_R32F},
145 {GL_VIEW_CLASS_32_BITS, GL_RGB10_A2UI},
146 {GL_VIEW_CLASS_32_BITS, GL_RGBA8UI},
147 {GL_VIEW_CLASS_32_BITS, GL_RG16UI},
148 {GL_VIEW_CLASS_32_BITS, GL_R32UI},
149 {GL_VIEW_CLASS_32_BITS, GL_RGBA8I},
150 {GL_VIEW_CLASS_32_BITS, GL_RG16I},
151 {GL_VIEW_CLASS_32_BITS, GL_R32I},
152 {GL_VIEW_CLASS_32_BITS, GL_RGB10_A2},
153 {GL_VIEW_CLASS_32_BITS, GL_RGBA8},
154 {GL_VIEW_CLASS_32_BITS, GL_RG16},
155 {GL_VIEW_CLASS_32_BITS, GL_RGBA8_SNORM},
156 {GL_VIEW_CLASS_32_BITS, GL_RG16_SNORM},
157 {GL_VIEW_CLASS_32_BITS, GL_SRGB8_ALPHA8},
158 {GL_VIEW_CLASS_32_BITS, GL_RGB9_E5},
159 {GL_VIEW_CLASS_24_BITS, GL_RGB8},
160 {GL_VIEW_CLASS_24_BITS, GL_RGB8_SNORM},
161 {GL_VIEW_CLASS_24_BITS, GL_SRGB8},
162 {GL_VIEW_CLASS_24_BITS, GL_RGB8UI},
163 {GL_VIEW_CLASS_24_BITS, GL_RGB8I},
164 {GL_VIEW_CLASS_16_BITS, GL_R16F},
165 {GL_VIEW_CLASS_16_BITS, GL_RG8UI},
166 {GL_VIEW_CLASS_16_BITS, GL_R16UI},
167 {GL_VIEW_CLASS_16_BITS, GL_RG8I},
168 {GL_VIEW_CLASS_16_BITS, GL_R16I},
169 {GL_VIEW_CLASS_16_BITS, GL_RG8},
170 {GL_VIEW_CLASS_16_BITS, GL_R16},
171 {GL_VIEW_CLASS_16_BITS, GL_RG8_SNORM},
172 {GL_VIEW_CLASS_16_BITS, GL_SRG8_EXT},
173 {GL_VIEW_CLASS_16_BITS, GL_R16_SNORM},
174 {GL_VIEW_CLASS_8_BITS, GL_R8UI},
175 {GL_VIEW_CLASS_8_BITS, GL_R8I},
176 {GL_VIEW_CLASS_8_BITS, GL_R8},
177 {GL_VIEW_CLASS_8_BITS, GL_R8_SNORM},
178 {GL_VIEW_CLASS_8_BITS, GL_SR8_EXT},
179 {GL_VIEW_CLASS_RGTC1_RED, GL_COMPRESSED_RED_RGTC1},
180 {GL_VIEW_CLASS_RGTC1_RED, GL_COMPRESSED_SIGNED_RED_RGTC1},
181 {GL_VIEW_CLASS_RGTC2_RG, GL_COMPRESSED_RG_RGTC2},
182 {GL_VIEW_CLASS_RGTC2_RG, GL_COMPRESSED_SIGNED_RG_RGTC2},
183 {GL_VIEW_CLASS_BPTC_UNORM, GL_COMPRESSED_RGBA_BPTC_UNORM_ARB},
184 {GL_VIEW_CLASS_BPTC_UNORM, GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB},
185 {GL_VIEW_CLASS_BPTC_FLOAT, GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB},
186 {GL_VIEW_CLASS_BPTC_FLOAT, GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB},
187 };
188
189 static const struct internal_format_class_info s3tc_compatible_internal_formats[] = {
190 {GL_VIEW_CLASS_S3TC_DXT1_RGB, GL_COMPRESSED_RGB_S3TC_DXT1_EXT},
191 {GL_VIEW_CLASS_S3TC_DXT1_RGB, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT},
192 {GL_VIEW_CLASS_S3TC_DXT1_RGBA, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT},
193 {GL_VIEW_CLASS_S3TC_DXT1_RGBA, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT},
194 {GL_VIEW_CLASS_S3TC_DXT3_RGBA, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT},
195 {GL_VIEW_CLASS_S3TC_DXT3_RGBA, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT},
196 {GL_VIEW_CLASS_S3TC_DXT5_RGBA, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT},
197 {GL_VIEW_CLASS_S3TC_DXT5_RGBA, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT},
198 };
199
200 static const struct internal_format_class_info gles_etc2_compatible_internal_formats[] = {
201 {VIEW_CLASS_EAC_R11, GL_COMPRESSED_R11_EAC},
202 {VIEW_CLASS_EAC_R11, GL_COMPRESSED_SIGNED_R11_EAC},
203 {VIEW_CLASS_EAC_RG11, GL_COMPRESSED_RG11_EAC},
204 {VIEW_CLASS_EAC_RG11, GL_COMPRESSED_SIGNED_RG11_EAC},
205 {VIEW_CLASS_ETC2_RGB, GL_COMPRESSED_RGB8_ETC2},
206 {VIEW_CLASS_ETC2_RGB, GL_COMPRESSED_SRGB8_ETC2},
207 {VIEW_CLASS_ETC2_RGBA, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2},
208 {VIEW_CLASS_ETC2_RGBA, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2},
209 {VIEW_CLASS_ETC2_EAC_RGBA, GL_COMPRESSED_RGBA8_ETC2_EAC},
210 {VIEW_CLASS_ETC2_EAC_RGBA, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC},
211 };
212
213 static const struct internal_format_class_info gles_astc_compatible_internal_formats[] = {
214 #define ASTC_FMT(size) \
215 {VIEW_CLASS_ASTC_##size##_RGBA, GL_COMPRESSED_RGBA_ASTC_##size##_KHR}, \
216 {VIEW_CLASS_ASTC_##size##_RGBA, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_##size##_KHR}
217
218 ASTC_FMT(4x4),
219 ASTC_FMT(5x4),
220 ASTC_FMT(5x5),
221 ASTC_FMT(6x5),
222 ASTC_FMT(6x6),
223 ASTC_FMT(8x5),
224 ASTC_FMT(8x6),
225 ASTC_FMT(8x8),
226 ASTC_FMT(10x5),
227 ASTC_FMT(10x6),
228 ASTC_FMT(10x8),
229 ASTC_FMT(10x10),
230 ASTC_FMT(12x10),
231 ASTC_FMT(12x12),
232 #undef ASTC_FMT
233 };
234
235 static const struct internal_format_class_info gles_astc_3d_compatible_internal_formats[] = {
236 #define ASTC_FMT(size) \
237 {VIEW_CLASS_ASTC_##size##_RGBA, GL_COMPRESSED_RGBA_ASTC_##size##_OES}, \
238 {VIEW_CLASS_ASTC_##size##_RGBA, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_##size##_OES}
239
240 ASTC_FMT(3x3x3),
241 ASTC_FMT(4x3x3),
242 ASTC_FMT(4x4x3),
243 ASTC_FMT(4x4x4),
244 ASTC_FMT(5x4x4),
245 ASTC_FMT(5x5x4),
246 ASTC_FMT(5x5x5),
247 ASTC_FMT(6x5x5),
248 ASTC_FMT(6x6x5),
249 ASTC_FMT(6x6x6),
250 #undef ASTC_FMT
251 };
252
253 GLenum
_mesa_texture_view_lookup_view_class(const struct gl_context * ctx,GLenum internalformat)254 _mesa_texture_view_lookup_view_class(const struct gl_context *ctx, GLenum internalformat)
255 {
256 GLuint i;
257
258 for (i = 0; i < ARRAY_SIZE(compatible_internal_formats); i++) {
259 if (compatible_internal_formats[i].internal_format == internalformat)
260 return compatible_internal_formats[i].view_class;
261 }
262
263 if (ctx->Extensions.EXT_texture_compression_s3tc &&
264 ctx->Extensions.EXT_texture_sRGB) {
265 for (i = 0; i < ARRAY_SIZE(s3tc_compatible_internal_formats); i++) {
266 if (s3tc_compatible_internal_formats[i].internal_format
267 == internalformat)
268 return s3tc_compatible_internal_formats[i].view_class;
269 }
270 }
271
272 if (_mesa_is_gles3(ctx)) {
273 for (i = 0; i < ARRAY_SIZE(gles_etc2_compatible_internal_formats); i++) {
274 if (gles_etc2_compatible_internal_formats[i].internal_format
275 == internalformat)
276 return gles_etc2_compatible_internal_formats[i].view_class;
277 }
278
279 if (ctx->Extensions.KHR_texture_compression_astc_ldr) {
280 for (i = 0; i < ARRAY_SIZE(gles_astc_compatible_internal_formats); i++) {
281 if (gles_astc_compatible_internal_formats[i].internal_format
282 == internalformat)
283 return gles_astc_compatible_internal_formats[i].view_class;
284 }
285 }
286
287 if (ctx->Extensions.OES_texture_compression_astc) {
288 for (i = 0; i < ARRAY_SIZE(gles_astc_3d_compatible_internal_formats); i++) {
289 if (gles_astc_3d_compatible_internal_formats[i].internal_format
290 == internalformat)
291 return gles_astc_3d_compatible_internal_formats[i].view_class;
292 }
293 }
294 }
295 return GL_FALSE;
296 }
297
298 /**
299 * Initialize new texture's gl_texture_image structures. Will not call driver
300 * to allocate new space, simply record relevant layer, face, format, etc.
301 * \return GL_FALSE if any error, GL_TRUE otherwise.
302 */
303 static GLboolean
initialize_texture_fields(struct gl_context * ctx,GLenum target,struct gl_texture_object * texObj,GLint levels,GLsizei width,GLsizei height,GLsizei depth,GLenum internalFormat,mesa_format texFormat,GLuint numSamples,GLboolean fixedSampleLocations)304 initialize_texture_fields(struct gl_context *ctx,
305 GLenum target,
306 struct gl_texture_object *texObj,
307 GLint levels,
308 GLsizei width, GLsizei height, GLsizei depth,
309 GLenum internalFormat, mesa_format texFormat,
310 GLuint numSamples, GLboolean fixedSampleLocations)
311 {
312 const GLuint numFaces = _mesa_num_tex_faces(target);
313 GLint level, levelWidth = width, levelHeight = height, levelDepth = depth;
314 GLuint face;
315
316 /* Pretend we are bound to initialize the gl_texture_image structs */
317 texObj->Target = target;
318
319 /* Set up all the texture object's gl_texture_images */
320 for (level = 0; level < levels; level++) {
321 for (face = 0; face < numFaces; face++) {
322 struct gl_texture_image *texImage;
323 const GLenum faceTarget = _mesa_cube_face_target(target, face);
324
325 texImage = _mesa_get_tex_image(ctx, texObj, faceTarget, level);
326
327 if (!texImage) {
328 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage");
329 return GL_FALSE;
330 }
331
332 _mesa_init_teximage_fields_ms(ctx, texImage,
333 levelWidth, levelHeight, levelDepth,
334 0, internalFormat, texFormat,
335 numSamples, fixedSampleLocations);
336 }
337
338 _mesa_next_mipmap_level_size(target, 0,
339 levelWidth, levelHeight, levelDepth,
340 &levelWidth, &levelHeight, &levelDepth);
341 }
342
343 /* "unbind" */
344 texObj->Target = 0;
345
346 return GL_TRUE;
347 }
348
349 #define RETURN_IF_SUPPORTED(t) do { \
350 if (newTarget == GL_ ## t) \
351 return true; \
352 } while (0)
353
354 /**
355 * Check for compatible target
356 * If an error is found, record it with _mesa_error()
357 * \return false if any error, true otherwise.
358 */
359 static bool
target_valid(struct gl_context * ctx,GLenum origTarget,GLenum newTarget)360 target_valid(struct gl_context *ctx, GLenum origTarget, GLenum newTarget)
361 {
362 /*
363 * From ARB_texture_view spec:
364 ---------------------------------------------------------------------------------------------------------
365 | Original target | Valid new targets |
366 ---------------------------------------------------------------------------------------------------------
367 | TEXTURE_1D | TEXTURE_1D, TEXTURE_1D_ARRAY |
368 | ------------------------------------------------------------------------------------------------------- |
369 | TEXTURE_2D | TEXTURE_2D, TEXTURE_2D_ARRAY |
370 | ------------------------------------------------------------------------------------------------------- |
371 | TEXTURE_3D | TEXTURE_3D |
372 | ------------------------------------------------------------------------------------------------------- |
373 | TEXTURE_CUBE_MAP | TEXTURE_CUBE_MAP, TEXTURE_2D, TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY |
374 | ------------------------------------------------------------------------------------------------------- |
375 | TEXTURE_RECTANGLE | TEXTURE_RECTANGLE |
376 | ------------------------------------------------------------------------------------------------------- |
377 | TEXTURE_BUFFER | <none> |
378 | ------------------------------------------------------------------------------------------------------- |
379 | TEXTURE_1D_ARRAY | TEXTURE_1D_ARRAY, TEXTURE_1D |
380 | ------------------------------------------------------------------------------------------------------- |
381 | TEXTURE_2D_ARRAY | TEXTURE_2D_ARRAY, TEXTURE_2D, TEXTURE_CUBE_MAP, TEXTURE_CUBE_MAP_ARRAY |
382 | ------------------------------------------------------------------------------------------------------- |
383 | TEXTURE_CUBE_MAP_ARRAY | TEXTURE_CUBE_MAP_ARRAY, TEXTURE_2D_ARRAY, TEXTURE_2D, TEXTURE_CUBE_MAP |
384 | ------------------------------------------------------------------------------------------------------- |
385 | TEXTURE_2D_MULTISAMPLE | TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY |
386 | ------------------------------------------------------------------------------------------------------- |
387 | TEXTURE_2D_MULTISAMPLE_ARRAY | TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY |
388 ---------------------------------------------------------------------------------------------------------
389 */
390
391 switch (origTarget) {
392 case GL_TEXTURE_1D:
393 case GL_TEXTURE_1D_ARRAY:
394 RETURN_IF_SUPPORTED(TEXTURE_1D);
395 RETURN_IF_SUPPORTED(TEXTURE_1D_ARRAY);
396 break;
397 case GL_TEXTURE_2D:
398 RETURN_IF_SUPPORTED(TEXTURE_2D);
399 RETURN_IF_SUPPORTED(TEXTURE_2D_ARRAY);
400 break;
401 case GL_TEXTURE_3D:
402 RETURN_IF_SUPPORTED(TEXTURE_3D);
403 break;
404 case GL_TEXTURE_RECTANGLE:
405 RETURN_IF_SUPPORTED(TEXTURE_RECTANGLE);
406 break;
407 case GL_TEXTURE_CUBE_MAP:
408 case GL_TEXTURE_2D_ARRAY:
409 case GL_TEXTURE_CUBE_MAP_ARRAY:
410 RETURN_IF_SUPPORTED(TEXTURE_2D);
411 RETURN_IF_SUPPORTED(TEXTURE_2D_ARRAY);
412 RETURN_IF_SUPPORTED(TEXTURE_CUBE_MAP);
413 RETURN_IF_SUPPORTED(TEXTURE_CUBE_MAP_ARRAY);
414 break;
415 case GL_TEXTURE_2D_MULTISAMPLE:
416 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
417 RETURN_IF_SUPPORTED(TEXTURE_2D_MULTISAMPLE);
418 RETURN_IF_SUPPORTED(TEXTURE_2D_MULTISAMPLE_ARRAY);
419 break;
420 }
421 _mesa_error(ctx, GL_INVALID_OPERATION,
422 "glTextureView(illegal target=%s)",
423 _mesa_enum_to_string(newTarget));
424 return false;
425 }
426 #undef RETURN_IF_SUPPORTED
427
428 /**
429 * Check for compatible format
430 * If an error is found, record it with _mesa_error()
431 * \return false if any error, true otherwise.
432 */
433 bool
_mesa_texture_view_compatible_format(const struct gl_context * ctx,GLenum origInternalFormat,GLenum newInternalFormat)434 _mesa_texture_view_compatible_format(const struct gl_context *ctx,
435 GLenum origInternalFormat,
436 GLenum newInternalFormat)
437 {
438 unsigned int origViewClass, newViewClass;
439
440 /* The two textures' internal formats must be compatible according to
441 * Table 3.X.2 (Compatible internal formats for TextureView)
442 * if the internal format exists in that table the view class must match.
443 * The internal formats must be identical if not in that table,
444 * or an INVALID_OPERATION error is generated.
445 */
446 if (origInternalFormat == newInternalFormat)
447 return true;
448
449 origViewClass = _mesa_texture_view_lookup_view_class(ctx, origInternalFormat);
450 newViewClass = _mesa_texture_view_lookup_view_class(ctx, newInternalFormat);
451 if ((origViewClass == newViewClass) && origViewClass != false)
452 return true;
453
454 return false;
455 }
456
457 /**
458 * Helper function for TexStorage and teximagemultisample to set immutable
459 * texture state needed by ARB_texture_view.
460 */
461 void
_mesa_set_texture_view_state(struct gl_context * ctx,struct gl_texture_object * texObj,GLenum target,GLuint levels)462 _mesa_set_texture_view_state(struct gl_context *ctx,
463 struct gl_texture_object *texObj,
464 GLenum target, GLuint levels)
465 {
466 struct gl_texture_image *texImage;
467
468 /* Get a reference to what will become this View's base level */
469 texImage = _mesa_select_tex_image(texObj, target, 0);
470
471 /* When an immutable texture is created via glTexStorage or
472 * glTexImageMultisample,
473 * TEXTURE_IMMUTABLE_FORMAT becomes TRUE.
474 * TEXTURE_IMMUTABLE_LEVELS and TEXTURE_VIEW_NUM_LEVELS become levels.
475 * If the texture target is TEXTURE_1D_ARRAY then
476 * TEXTURE_VIEW_NUM_LAYERS becomes height.
477 * If the texture target is TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY,
478 * or TEXTURE_2D_MULTISAMPLE_ARRAY then TEXTURE_VIEW_NUM_LAYERS becomes
479 * depth.
480 * If the texture target is TEXTURE_CUBE_MAP, then
481 * TEXTURE_VIEW_NUM_LAYERS becomes 6.
482 * For any other texture target, TEXTURE_VIEW_NUM_LAYERS becomes 1.
483 *
484 * ARB_texture_multisample: Multisample textures do
485 * not have multiple image levels.
486 */
487
488 texObj->Immutable = GL_TRUE;
489 texObj->External = GL_FALSE;
490 texObj->Attrib.ImmutableLevels = levels;
491 texObj->Attrib.MinLevel = 0;
492 texObj->Attrib.NumLevels = levels;
493 texObj->Attrib.MinLayer = 0;
494 texObj->Attrib.NumLayers = 1;
495 switch (target) {
496 case GL_TEXTURE_1D_ARRAY:
497 texObj->Attrib.NumLayers = texImage->Height;
498 break;
499
500 case GL_TEXTURE_2D_MULTISAMPLE:
501 texObj->Attrib.NumLevels = 1;
502 texObj->Attrib.ImmutableLevels = 1;
503 break;
504
505 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
506 texObj->Attrib.NumLevels = 1;
507 texObj->Attrib.ImmutableLevels = 1;
508 FALLTHROUGH;
509 /* fallthrough to set NumLayers */
510
511 case GL_TEXTURE_2D_ARRAY:
512 case GL_TEXTURE_CUBE_MAP_ARRAY:
513 texObj->Attrib.NumLayers = texImage->Depth;
514 break;
515
516 case GL_TEXTURE_CUBE_MAP:
517 texObj->Attrib.NumLayers = 6;
518 break;
519 }
520 }
521
522 /**
523 * glTextureView (ARB_texture_view)
524 * If an error is found, record it with _mesa_error()
525 * \return none.
526 */
527 static ALWAYS_INLINE void
texture_view(struct gl_context * ctx,struct gl_texture_object * origTexObj,struct gl_texture_object * texObj,GLenum target,GLenum internalformat,GLuint minlevel,GLuint numlevels,GLuint minlayer,GLuint numlayers,bool no_error)528 texture_view(struct gl_context *ctx, struct gl_texture_object *origTexObj,
529 struct gl_texture_object *texObj, GLenum target,
530 GLenum internalformat, GLuint minlevel, GLuint numlevels,
531 GLuint minlayer, GLuint numlayers, bool no_error)
532 {
533 struct gl_texture_image *origTexImage;
534 GLuint newViewNumLevels, newViewNumLayers;
535 GLsizei width, height, depth;
536 mesa_format texFormat;
537 GLboolean sizeOK, dimensionsOK;
538 GLenum faceTarget;
539
540 texFormat = _mesa_choose_texture_format(ctx, texObj, target, 0,
541 internalformat, GL_NONE, GL_NONE);
542 if (texFormat == MESA_FORMAT_NONE) return;
543
544 newViewNumLevels = MIN2(numlevels, origTexObj->Attrib.NumLevels - minlevel);
545 newViewNumLayers = MIN2(numlayers, origTexObj->Attrib.NumLayers - minlayer);
546
547 faceTarget = _mesa_cube_face_target(origTexObj->Target, minlayer);
548
549 /* Get a reference to what will become this View's base level */
550 origTexImage = _mesa_select_tex_image(origTexObj, faceTarget, minlevel);
551 width = origTexImage->Width;
552 height = origTexImage->Height;
553 depth = origTexImage->Depth;
554
555 /* Adjust width, height, depth to be appropriate for new target */
556 switch (target) {
557 case GL_TEXTURE_1D:
558 height = 1;
559 break;
560
561 case GL_TEXTURE_3D:
562 break;
563
564 case GL_TEXTURE_1D_ARRAY:
565 height = (GLsizei) newViewNumLayers;
566 break;
567
568 case GL_TEXTURE_2D:
569 case GL_TEXTURE_2D_MULTISAMPLE:
570 case GL_TEXTURE_RECTANGLE:
571 depth = 1;
572 break;
573 case GL_TEXTURE_CUBE_MAP:
574 /* If the new texture's target is TEXTURE_CUBE_MAP, the clamped
575 * <numlayers> must be equal to 6.
576 */
577 if (!no_error && newViewNumLayers != 6) {
578 _mesa_error(ctx, GL_INVALID_VALUE,
579 "glTextureView(clamped numlayers %d != 6)",
580 newViewNumLayers);
581 return;
582 }
583 depth = 1;
584 break;
585
586 case GL_TEXTURE_2D_ARRAY:
587 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
588 depth = newViewNumLayers;
589 break;
590 case GL_TEXTURE_CUBE_MAP_ARRAY:
591 /* If the new texture's target is TEXTURE_CUBE_MAP_ARRAY,
592 * then <numlayers> counts layer-faces rather than layers,
593 * and the clamped <numlayers> must be a multiple of 6.
594 * Otherwise, the error INVALID_VALUE is generated.
595 */
596 if (!no_error && (newViewNumLayers % 6) != 0) {
597 _mesa_error(ctx, GL_INVALID_VALUE,
598 "glTextureView(clamped numlayers %d is not"
599 " a multiple of 6)",
600 newViewNumLayers);
601 return;
602 }
603 depth = newViewNumLayers;
604 break;
605 }
606
607 if (!no_error) {
608 /* If the dimensions of the original texture are larger than the maximum
609 * supported dimensions of the new target, the error INVALID_OPERATION is
610 * generated. For example, if the original texture has a TEXTURE_2D_ARRAY
611 * target and its width is greater than MAX_CUBE_MAP_TEXTURE_SIZE, an
612 * error will be generated if TextureView is called to create a
613 * TEXTURE_CUBE_MAP view.
614 */
615 dimensionsOK = _mesa_legal_texture_dimensions(ctx, target, 0,
616 width, height, depth, 0);
617 if (!dimensionsOK) {
618 _mesa_error(ctx, GL_INVALID_OPERATION,
619 "glTextureView(invalid width or height or depth)");
620 return;
621 }
622
623 sizeOK = ctx->Driver.TestProxyTexImage(ctx, target, 1, 0, texFormat,
624 origTexImage->NumSamples,
625 width, height, depth);
626 if (!sizeOK) {
627 _mesa_error(ctx, GL_INVALID_OPERATION,
628 "glTextureView(invalid texture size)");
629 return;
630 }
631
632 /* If <target> is TEXTURE_1D, TEXTURE_2D, TEXTURE_3D, TEXTURE_RECTANGLE,
633 * or TEXTURE_2D_MULTISAMPLE and <numlayers> does not equal 1, the error
634 * INVALID_VALUE is generated.
635 */
636 switch (target) {
637 case GL_TEXTURE_1D:
638 case GL_TEXTURE_2D:
639 case GL_TEXTURE_3D:
640 case GL_TEXTURE_RECTANGLE:
641 case GL_TEXTURE_2D_MULTISAMPLE:
642 if (numlayers != 1) {
643 _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(numlayers %d != 1)",
644 numlayers);
645 return;
646 }
647 break;
648 case GL_TEXTURE_CUBE_MAP:
649 break;
650 case GL_TEXTURE_CUBE_MAP_ARRAY:
651 break;
652 }
653
654 /* If the new texture's target is TEXTURE_CUBE_MAP or
655 * TEXTURE_CUBE_MAP_ARRAY, the width and height of the original texture's
656 * levels must be equal otherwise the error INVALID_OPERATION is
657 * generated.
658 */
659 if ((target == GL_TEXTURE_CUBE_MAP || target == GL_TEXTURE_CUBE_MAP_ARRAY)
660 && (origTexImage->Width != origTexImage->Height)) {
661 _mesa_error(ctx, GL_INVALID_OPERATION,
662 "glTextureView(origtexture width (%d) != height (%d))",
663 origTexImage->Width, origTexImage->Height);
664 return;
665 }
666 }
667
668 /* When the original texture's target is TEXTURE_CUBE_MAP, the layer
669 * parameters are interpreted in the same order as if it were a
670 * TEXTURE_CUBE_MAP_ARRAY with 6 layer-faces.
671 */
672
673 /* If the internal format does not exactly match the internal format of the
674 * original texture, the contents of the memory are reinterpreted in the
675 * same manner as for image bindings described in
676 * section 3.9.20 (Texture Image Loads and Stores).
677 */
678
679 /* TEXTURE_BASE_LEVEL and TEXTURE_MAX_LEVEL are interpreted
680 * relative to the view and not relative to the original data store.
681 */
682
683 if (!initialize_texture_fields(ctx, target, texObj, newViewNumLevels,
684 width, height, depth,
685 internalformat, texFormat,
686 origTexImage->NumSamples,
687 origTexImage->FixedSampleLocations)) {
688 return; /* Already recorded error */
689 }
690
691 texObj->Attrib.MinLevel = origTexObj->Attrib.MinLevel + minlevel;
692 texObj->Attrib.MinLayer = origTexObj->Attrib.MinLayer + minlayer;
693 texObj->Attrib.NumLevels = newViewNumLevels;
694 texObj->Attrib.NumLayers = newViewNumLayers;
695 texObj->Immutable = GL_TRUE;
696 texObj->External = GL_FALSE;
697 texObj->Attrib.ImmutableLevels = origTexObj->Attrib.ImmutableLevels;
698 texObj->Target = target;
699 texObj->TargetIndex = _mesa_tex_target_to_index(ctx, target);
700 assert(texObj->TargetIndex < NUM_TEXTURE_TARGETS);
701
702 if (ctx->Driver.TextureView != NULL &&
703 !ctx->Driver.TextureView(ctx, texObj, origTexObj)) {
704 return; /* driver recorded error */
705 }
706 }
707
708 void GLAPIENTRY
_mesa_TextureView_no_error(GLuint texture,GLenum target,GLuint origtexture,GLenum internalformat,GLuint minlevel,GLuint numlevels,GLuint minlayer,GLuint numlayers)709 _mesa_TextureView_no_error(GLuint texture, GLenum target, GLuint origtexture,
710 GLenum internalformat,
711 GLuint minlevel, GLuint numlevels,
712 GLuint minlayer, GLuint numlayers)
713 {
714 struct gl_texture_object *texObj;
715 struct gl_texture_object *origTexObj;
716
717 GET_CURRENT_CONTEXT(ctx);
718
719 origTexObj = _mesa_lookup_texture(ctx, origtexture);
720 texObj = _mesa_lookup_texture(ctx, texture);
721
722 texture_view(ctx, origTexObj, texObj, target, internalformat, minlevel,
723 numlevels, minlayer, numlayers, true);
724 }
725
726 void GLAPIENTRY
_mesa_TextureView(GLuint texture,GLenum target,GLuint origtexture,GLenum internalformat,GLuint minlevel,GLuint numlevels,GLuint minlayer,GLuint numlayers)727 _mesa_TextureView(GLuint texture, GLenum target, GLuint origtexture,
728 GLenum internalformat,
729 GLuint minlevel, GLuint numlevels,
730 GLuint minlayer, GLuint numlayers)
731 {
732 struct gl_texture_object *texObj;
733 struct gl_texture_object *origTexObj;
734 GLuint newViewMinLevel, newViewMinLayer;
735
736 GET_CURRENT_CONTEXT(ctx);
737
738 if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE))
739 _mesa_debug(ctx, "glTextureView %d %s %d %s %d %d %d %d\n",
740 texture, _mesa_enum_to_string(target), origtexture,
741 _mesa_enum_to_string(internalformat),
742 minlevel, numlevels, minlayer, numlayers);
743
744 if (origtexture == 0) {
745 _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(origtexture = %u)",
746 origtexture);
747 return;
748 }
749
750 /* Need original texture information to validate arguments */
751 origTexObj = _mesa_lookup_texture(ctx, origtexture);
752
753 /* If <origtexture> is not the name of a texture, INVALID_VALUE
754 * is generated.
755 */
756 if (!origTexObj) {
757 _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(origtexture = %u)",
758 origtexture);
759 return;
760 }
761
762 /* If <origtexture>'s TEXTURE_IMMUTABLE_FORMAT value is not TRUE,
763 * INVALID_OPERATION is generated.
764 */
765 if (!origTexObj->Immutable) {
766 _mesa_error(ctx, GL_INVALID_OPERATION,
767 "glTextureView(origtexture not immutable)");
768 return;
769 }
770
771 /* If <texture> is 0, INVALID_VALUE is generated. */
772 if (texture == 0) {
773 _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(texture = 0)");
774 return;
775 }
776
777 /* If <texture> is not a valid name returned by GenTextures,
778 * the error INVALID_OPERATION is generated.
779 */
780 texObj = _mesa_lookup_texture(ctx, texture);
781 if (texObj == NULL) {
782 _mesa_error(ctx, GL_INVALID_OPERATION,
783 "glTextureView(texture = %u non-gen name)", texture);
784 return;
785 }
786
787 /* If <texture> has already been bound and given a target, then
788 * the error INVALID_OPERATION is generated.
789 */
790 if (texObj->Target) {
791 _mesa_error(ctx, GL_INVALID_OPERATION,
792 "glTextureView(texture = %u already bound)", texture);
793 return;
794 }
795
796 /* Check for compatible target */
797 if (!target_valid(ctx, origTexObj->Target, target)) {
798 return; /* error was recorded */
799 }
800
801 /* minlevel and minlayer are relative to the view of origtexture.
802 * If minlevel or minlayer is greater than level or layer, respectively,
803 * return INVALID_VALUE.
804 */
805 newViewMinLevel = origTexObj->Attrib.MinLevel + minlevel;
806 newViewMinLayer = origTexObj->Attrib.MinLayer + minlayer;
807 if (newViewMinLevel >= (origTexObj->Attrib.MinLevel +
808 origTexObj->Attrib.NumLevels)) {
809 _mesa_error(ctx, GL_INVALID_VALUE,
810 "glTextureView(new minlevel (%d) > orig minlevel (%d)"
811 " + orig numlevels (%d))",
812 newViewMinLevel, origTexObj->Attrib.MinLevel,
813 origTexObj->Attrib.NumLevels);
814 return;
815 }
816
817 if (newViewMinLayer >= (origTexObj->Attrib.MinLayer +
818 origTexObj->Attrib.NumLayers)) {
819 _mesa_error(ctx, GL_INVALID_VALUE,
820 "glTextureView(new minlayer (%d) > orig minlayer (%d)"
821 " + orig numlayers (%d))",
822 newViewMinLayer, origTexObj->Attrib.MinLayer,
823 origTexObj->Attrib.NumLayers);
824 return;
825 }
826
827 if (!_mesa_texture_view_compatible_format(ctx,
828 origTexObj->Image[0][0]->InternalFormat,
829 internalformat)) {
830 _mesa_error(ctx, GL_INVALID_OPERATION,
831 "glTextureView(internalformat %s not compatible with origtexture %s)",
832 _mesa_enum_to_string(internalformat),
833 _mesa_enum_to_string(origTexObj->Image[0][0]->InternalFormat));
834 return;
835 }
836
837 texture_view(ctx, origTexObj, texObj, target, internalformat, minlevel,
838 numlevels, minlayer, numlayers, false);
839 }
840