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Merge branch 'vulkan' into 'vulkan'
[mesa.git] / src / mesa / state_tracker / st_extensions.c
1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * Copyright (c) 2008 VMware, Inc.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 #include "main/imports.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/version.h"
33
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_math.h"
38
39 #include "st_context.h"
40 #include "st_debug.h"
41 #include "st_extensions.h"
42 #include "st_format.h"
43
44
45 /*
46 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
47 * avoid evaluating arguments (which are often function calls) more than once.
48 */
49
50 static unsigned _min(unsigned a, unsigned b)
51 {
52 return (a < b) ? a : b;
53 }
54
55 static float _maxf(float a, float b)
56 {
57 return (a > b) ? a : b;
58 }
59
60 static int _clamp(int a, int min, int max)
61 {
62 if (a < min)
63 return min;
64 else if (a > max)
65 return max;
66 else
67 return a;
68 }
69
70
71 /**
72 * Query driver to get implementation limits.
73 * Note that we have to limit/clamp against Mesa's internal limits too.
74 */
75 void st_init_limits(struct pipe_screen *screen,
76 struct gl_constants *c, struct gl_extensions *extensions)
77 {
78 unsigned sh;
79 boolean can_ubo = TRUE;
80
81 c->MaxTextureLevels
82 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
83 MAX_TEXTURE_LEVELS);
84
85 c->Max3DTextureLevels
86 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
87 MAX_3D_TEXTURE_LEVELS);
88
89 c->MaxCubeTextureLevels
90 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
91 MAX_CUBE_TEXTURE_LEVELS);
92
93 c->MaxTextureRectSize
94 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
95
96 c->MaxArrayTextureLayers
97 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
98
99 /* Define max viewport size and max renderbuffer size in terms of
100 * max texture size (note: max tex RECT size = max tex 2D size).
101 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
102 */
103 c->MaxViewportWidth =
104 c->MaxViewportHeight =
105 c->MaxRenderbufferSize = c->MaxTextureRectSize;
106
107 c->MaxDrawBuffers = c->MaxColorAttachments =
108 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
109 1, MAX_DRAW_BUFFERS);
110
111 c->MaxDualSourceDrawBuffers
112 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
113 0, MAX_DRAW_BUFFERS);
114
115 c->MaxLineWidth
116 = _maxf(1.0f, screen->get_paramf(screen,
117 PIPE_CAPF_MAX_LINE_WIDTH));
118 c->MaxLineWidthAA
119 = _maxf(1.0f, screen->get_paramf(screen,
120 PIPE_CAPF_MAX_LINE_WIDTH_AA));
121
122 c->MaxPointSize
123 = _maxf(1.0f, screen->get_paramf(screen,
124 PIPE_CAPF_MAX_POINT_WIDTH));
125 c->MaxPointSizeAA
126 = _maxf(1.0f, screen->get_paramf(screen,
127 PIPE_CAPF_MAX_POINT_WIDTH_AA));
128
129 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
130 * for non-aa sizes, but we can go down to 0.0 for aa points.
131 */
132 c->MinPointSize = 1.0f;
133 c->MinPointSizeAA = 0.0f;
134
135 c->MaxTextureMaxAnisotropy
136 = _maxf(2.0f, screen->get_paramf(screen,
137 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
138
139 c->MaxTextureLodBias
140 = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
141
142 c->QuadsFollowProvokingVertexConvention = screen->get_param(
143 screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
144
145 c->MaxUniformBlockSize =
146 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
147 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
148 if (c->MaxUniformBlockSize < 16384) {
149 can_ubo = FALSE;
150 }
151
152 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
153 struct gl_shader_compiler_options *options;
154 struct gl_program_constants *pc;
155
156 switch (sh) {
157 case PIPE_SHADER_FRAGMENT:
158 pc = &c->Program[MESA_SHADER_FRAGMENT];
159 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
160 break;
161 case PIPE_SHADER_VERTEX:
162 pc = &c->Program[MESA_SHADER_VERTEX];
163 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
164 break;
165 case PIPE_SHADER_GEOMETRY:
166 pc = &c->Program[MESA_SHADER_GEOMETRY];
167 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
168 break;
169 case PIPE_SHADER_TESS_CTRL:
170 pc = &c->Program[MESA_SHADER_TESS_CTRL];
171 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
172 break;
173 case PIPE_SHADER_TESS_EVAL:
174 pc = &c->Program[MESA_SHADER_TESS_EVAL];
175 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
176 break;
177 default:
178 /* compute shader, etc. */
179 continue;
180 }
181
182 pc->MaxTextureImageUnits =
183 _min(screen->get_shader_param(screen, sh,
184 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
185 MAX_TEXTURE_IMAGE_UNITS);
186
187 pc->MaxInstructions = pc->MaxNativeInstructions =
188 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
189 pc->MaxAluInstructions = pc->MaxNativeAluInstructions =
190 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
191 pc->MaxTexInstructions = pc->MaxNativeTexInstructions =
192 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
193 pc->MaxTexIndirections = pc->MaxNativeTexIndirections =
194 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
195 pc->MaxAttribs = pc->MaxNativeAttribs =
196 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
197 pc->MaxTemps = pc->MaxNativeTemps =
198 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
199 pc->MaxAddressRegs = pc->MaxNativeAddressRegs =
200 sh == PIPE_SHADER_VERTEX ? 1 : 0;
201 pc->MaxParameters = pc->MaxNativeParameters =
202 screen->get_shader_param(screen, sh,
203 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
204 pc->MaxInputComponents =
205 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
206 pc->MaxOutputComponents =
207 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
208
209 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
210
211 pc->MaxUniformBlocks =
212 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
213 if (pc->MaxUniformBlocks)
214 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
215 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
216
217 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
218 c->MaxUniformBlockSize / 4 *
219 pc->MaxUniformBlocks);
220
221 /* Gallium doesn't really care about local vs. env parameters so use the
222 * same limits.
223 */
224 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
225 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
226
227 options->EmitNoNoise = TRUE;
228
229 /* TODO: make these more fine-grained if anyone needs it */
230 options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
231 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
232 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
233 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
234
235 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
236
237 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
238 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
239 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
240 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
241 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
242 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
243 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
244 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
245
246 if (pc->MaxNativeInstructions &&
247 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
248 can_ubo = FALSE;
249 }
250
251 if (options->EmitNoLoops)
252 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
253 else
254 options->MaxUnrollIterations = screen->get_shader_param(screen, sh,
255 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
256
257 options->LowerClipDistance = true;
258 options->LowerBufferInterfaceBlocks = true;
259 }
260
261 c->LowerTessLevel = true;
262
263 c->MaxCombinedTextureImageUnits =
264 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
265 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
266 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
267 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
268 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
269 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
270
271 /* This depends on program constants. */
272 c->MaxTextureCoordUnits
273 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
274
275 c->MaxTextureUnits = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, c->MaxTextureCoordUnits);
276
277 c->Program[MESA_SHADER_VERTEX].MaxAttribs = MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
278
279 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
280 * of inputs. It's always 2 colors + N generic inputs. */
281 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
282 PIPE_SHADER_CAP_MAX_INPUTS);
283 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
284 c->MaxGeometryOutputVertices = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
285 c->MaxGeometryTotalOutputComponents = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
286 c->MaxTessPatchComponents =
287 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
288 MAX_VARYING) * 4;
289
290 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
291 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
292
293 c->MaxProgramTextureGatherComponents = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
294 c->MinProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
295 c->MaxProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
296
297 c->MaxTransformFeedbackBuffers =
298 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
299 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS);
300 c->MaxTransformFeedbackSeparateComponents =
301 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
302 c->MaxTransformFeedbackInterleavedComponents =
303 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
304 c->MaxVertexStreams =
305 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
306
307 /* The vertex stream must fit into pipe_stream_output_info::stream */
308 assert(c->MaxVertexStreams <= 4);
309
310 c->MaxVertexAttribStride
311 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
312
313 c->StripTextureBorder = GL_TRUE;
314
315 c->GLSLSkipStrictMaxUniformLimitCheck =
316 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
317
318 c->UniformBufferOffsetAlignment =
319 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
320
321 if (can_ubo) {
322 extensions->ARB_uniform_buffer_object = GL_TRUE;
323 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
324 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
325 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
326 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
327 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
328 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
329 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
330 }
331
332 c->GLSLFragCoordIsSysVal =
333 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
334 c->GLSLFrontFacingIsSysVal =
335 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
336 }
337
338
339 /**
340 * Given a member \c x of struct gl_extensions, return offset of
341 * \c x in bytes.
342 */
343 #define o(x) offsetof(struct gl_extensions, x)
344
345
346 struct st_extension_cap_mapping {
347 int extension_offset;
348 int cap;
349 };
350
351 struct st_extension_format_mapping {
352 int extension_offset[2];
353 enum pipe_format format[32];
354
355 /* If TRUE, at least one format must be supported for the extensions to be
356 * advertised. If FALSE, all the formats must be supported. */
357 GLboolean need_at_least_one;
358 };
359
360 /**
361 * Enable extensions if certain pipe formats are supported by the driver.
362 * What extensions will be enabled and what formats must be supported is
363 * described by the array of st_extension_format_mapping.
364 *
365 * target and bind_flags are passed to is_format_supported.
366 */
367 static void
368 init_format_extensions(struct pipe_screen *screen,
369 struct gl_extensions *extensions,
370 const struct st_extension_format_mapping *mapping,
371 unsigned num_mappings,
372 enum pipe_texture_target target,
373 unsigned bind_flags)
374 {
375 GLboolean *extension_table = (GLboolean *) extensions;
376 unsigned i;
377 int j;
378 int num_formats = ARRAY_SIZE(mapping->format);
379 int num_ext = ARRAY_SIZE(mapping->extension_offset);
380
381 for (i = 0; i < num_mappings; i++) {
382 int num_supported = 0;
383
384 /* Examine each format in the list. */
385 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
386 if (screen->is_format_supported(screen, mapping[i].format[j],
387 target, 0, bind_flags)) {
388 num_supported++;
389 }
390 }
391
392 if (!num_supported ||
393 (!mapping[i].need_at_least_one && num_supported != j)) {
394 continue;
395 }
396
397 /* Enable all extensions in the list. */
398 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
399 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
400 }
401 }
402
403
404 /**
405 * Given a list of formats and bind flags, return the maximum number
406 * of samples supported by any of those formats.
407 */
408 static unsigned
409 get_max_samples_for_formats(struct pipe_screen *screen,
410 unsigned num_formats,
411 enum pipe_format *formats,
412 unsigned max_samples,
413 unsigned bind)
414 {
415 unsigned i, f;
416
417 for (i = max_samples; i > 0; --i) {
418 for (f = 0; f < num_formats; f++) {
419 if (screen->is_format_supported(screen, formats[f],
420 PIPE_TEXTURE_2D, i, bind)) {
421 return i;
422 }
423 }
424 }
425 return 0;
426 }
427
428
429 /**
430 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
431 * which GL extensions are supported.
432 * Quite a few extensions are always supported because they are standard
433 * features or can be built on top of other gallium features.
434 * Some fine tuning may still be needed.
435 */
436 void st_init_extensions(struct pipe_screen *screen,
437 struct gl_constants *consts,
438 struct gl_extensions *extensions,
439 struct st_config_options *options,
440 boolean has_lib_dxtc)
441 {
442 unsigned i;
443 int glsl_feature_level;
444 GLboolean *extension_table = (GLboolean *) extensions;
445
446 static const struct st_extension_cap_mapping cap_mapping[] = {
447 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
448 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
449 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
450 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
451 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
452 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
453 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
454 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
455 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
456 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
457 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
458 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
459 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
460 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
461 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
462 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
463 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
464 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
465 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
466 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
467 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
468 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
469 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
470 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
471 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
472 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
473 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
474 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
475 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
476 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
477 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
478 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
479 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
480 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
481 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
482 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
483 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
484 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
485 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
486
487 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
488 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
489 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
490 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
491 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
492 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
493 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
494 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
495 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
496 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
497
498 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
499 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
500 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
501 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
502 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
503 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
504 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
505 /* GL_NV_point_sprite is not supported by gallium because we don't
506 * support the GL_POINT_SPRITE_R_MODE_NV option. */
507
508 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
509 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
510 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
511 };
512
513 /* Required: render target and sampler support */
514 static const struct st_extension_format_mapping rendertarget_mapping[] = {
515 { { o(ARB_texture_float) },
516 { PIPE_FORMAT_R32G32B32A32_FLOAT,
517 PIPE_FORMAT_R16G16B16A16_FLOAT } },
518
519 { { o(OES_texture_float) },
520 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
521
522 { { o(OES_texture_half_float) },
523 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
524
525 { { o(ARB_texture_rgb10_a2ui) },
526 { PIPE_FORMAT_R10G10B10A2_UINT,
527 PIPE_FORMAT_B10G10R10A2_UINT },
528 GL_TRUE }, /* at least one format must be supported */
529
530 { { o(EXT_framebuffer_sRGB) },
531 { PIPE_FORMAT_A8B8G8R8_SRGB,
532 PIPE_FORMAT_B8G8R8A8_SRGB },
533 GL_TRUE }, /* at least one format must be supported */
534
535 { { o(EXT_packed_float) },
536 { PIPE_FORMAT_R11G11B10_FLOAT } },
537
538 { { o(EXT_texture_integer) },
539 { PIPE_FORMAT_R32G32B32A32_UINT,
540 PIPE_FORMAT_R32G32B32A32_SINT } },
541
542 { { o(ARB_texture_rg) },
543 { PIPE_FORMAT_R8_UNORM,
544 PIPE_FORMAT_R8G8_UNORM } },
545 };
546
547 /* Required: depth stencil and sampler support */
548 static const struct st_extension_format_mapping depthstencil_mapping[] = {
549 { { o(ARB_depth_buffer_float) },
550 { PIPE_FORMAT_Z32_FLOAT,
551 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
552 };
553
554 /* Required: sampler support */
555 static const struct st_extension_format_mapping texture_mapping[] = {
556 { { o(ARB_texture_compression_rgtc) },
557 { PIPE_FORMAT_RGTC1_UNORM,
558 PIPE_FORMAT_RGTC1_SNORM,
559 PIPE_FORMAT_RGTC2_UNORM,
560 PIPE_FORMAT_RGTC2_SNORM } },
561
562 { { o(EXT_texture_compression_latc) },
563 { PIPE_FORMAT_LATC1_UNORM,
564 PIPE_FORMAT_LATC1_SNORM,
565 PIPE_FORMAT_LATC2_UNORM,
566 PIPE_FORMAT_LATC2_SNORM } },
567
568 { { o(EXT_texture_compression_s3tc),
569 o(ANGLE_texture_compression_dxt) },
570 { PIPE_FORMAT_DXT1_RGB,
571 PIPE_FORMAT_DXT1_RGBA,
572 PIPE_FORMAT_DXT3_RGBA,
573 PIPE_FORMAT_DXT5_RGBA } },
574
575 { { o(ARB_texture_compression_bptc) },
576 { PIPE_FORMAT_BPTC_RGBA_UNORM,
577 PIPE_FORMAT_BPTC_SRGBA,
578 PIPE_FORMAT_BPTC_RGB_FLOAT,
579 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
580
581 { { o(KHR_texture_compression_astc_ldr) },
582 { PIPE_FORMAT_ASTC_4x4,
583 PIPE_FORMAT_ASTC_5x4,
584 PIPE_FORMAT_ASTC_5x5,
585 PIPE_FORMAT_ASTC_6x5,
586 PIPE_FORMAT_ASTC_6x6,
587 PIPE_FORMAT_ASTC_8x5,
588 PIPE_FORMAT_ASTC_8x6,
589 PIPE_FORMAT_ASTC_8x8,
590 PIPE_FORMAT_ASTC_10x5,
591 PIPE_FORMAT_ASTC_10x6,
592 PIPE_FORMAT_ASTC_10x8,
593 PIPE_FORMAT_ASTC_10x10,
594 PIPE_FORMAT_ASTC_12x10,
595 PIPE_FORMAT_ASTC_12x12,
596 PIPE_FORMAT_ASTC_4x4_SRGB,
597 PIPE_FORMAT_ASTC_5x4_SRGB,
598 PIPE_FORMAT_ASTC_5x5_SRGB,
599 PIPE_FORMAT_ASTC_6x5_SRGB,
600 PIPE_FORMAT_ASTC_6x6_SRGB,
601 PIPE_FORMAT_ASTC_8x5_SRGB,
602 PIPE_FORMAT_ASTC_8x6_SRGB,
603 PIPE_FORMAT_ASTC_8x8_SRGB,
604 PIPE_FORMAT_ASTC_10x5_SRGB,
605 PIPE_FORMAT_ASTC_10x6_SRGB,
606 PIPE_FORMAT_ASTC_10x8_SRGB,
607 PIPE_FORMAT_ASTC_10x10_SRGB,
608 PIPE_FORMAT_ASTC_12x10_SRGB,
609 PIPE_FORMAT_ASTC_12x12_SRGB } },
610
611 { { o(EXT_texture_shared_exponent) },
612 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
613
614 { { o(EXT_texture_snorm) },
615 { PIPE_FORMAT_R8G8B8A8_SNORM } },
616
617 { { o(EXT_texture_sRGB),
618 o(EXT_texture_sRGB_decode) },
619 { PIPE_FORMAT_A8B8G8R8_SRGB,
620 PIPE_FORMAT_B8G8R8A8_SRGB },
621 GL_TRUE }, /* at least one format must be supported */
622
623 { { o(ATI_texture_compression_3dc) },
624 { PIPE_FORMAT_LATC2_UNORM } },
625
626 { { o(MESA_ycbcr_texture) },
627 { PIPE_FORMAT_UYVY,
628 PIPE_FORMAT_YUYV },
629 GL_TRUE }, /* at least one format must be supported */
630
631 { { o(OES_compressed_ETC1_RGB8_texture) },
632 { PIPE_FORMAT_ETC1_RGB8,
633 PIPE_FORMAT_R8G8B8A8_UNORM },
634 GL_TRUE }, /* at least one format must be supported */
635
636 { { o(ARB_stencil_texturing),
637 o(ARB_texture_stencil8) },
638 { PIPE_FORMAT_X24S8_UINT,
639 PIPE_FORMAT_S8X24_UINT },
640 GL_TRUE }, /* at least one format must be supported */
641 };
642
643 /* Required: vertex fetch support. */
644 static const struct st_extension_format_mapping vertex_mapping[] = {
645 { { o(ARB_vertex_type_2_10_10_10_rev) },
646 { PIPE_FORMAT_R10G10B10A2_UNORM,
647 PIPE_FORMAT_B10G10R10A2_UNORM,
648 PIPE_FORMAT_R10G10B10A2_SNORM,
649 PIPE_FORMAT_B10G10R10A2_SNORM,
650 PIPE_FORMAT_R10G10B10A2_USCALED,
651 PIPE_FORMAT_B10G10R10A2_USCALED,
652 PIPE_FORMAT_R10G10B10A2_SSCALED,
653 PIPE_FORMAT_B10G10R10A2_SSCALED } },
654 { { o(ARB_vertex_type_10f_11f_11f_rev) },
655 { PIPE_FORMAT_R11G11B10_FLOAT } },
656 };
657
658 static const struct st_extension_format_mapping tbo_rgb32[] = {
659 { {o(ARB_texture_buffer_object_rgb32) },
660 { PIPE_FORMAT_R32G32B32_FLOAT,
661 PIPE_FORMAT_R32G32B32_UINT,
662 PIPE_FORMAT_R32G32B32_SINT,
663 } },
664 };
665
666 /*
667 * Extensions that are supported by all Gallium drivers:
668 */
669 extensions->ARB_ES2_compatibility = GL_TRUE;
670 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
671 extensions->ARB_explicit_attrib_location = GL_TRUE;
672 extensions->ARB_explicit_uniform_location = GL_TRUE;
673 extensions->ARB_fragment_coord_conventions = GL_TRUE;
674 extensions->ARB_fragment_program = GL_TRUE;
675 extensions->ARB_fragment_shader = GL_TRUE;
676 extensions->ARB_half_float_vertex = GL_TRUE;
677 extensions->ARB_internalformat_query = GL_TRUE;
678 extensions->ARB_map_buffer_range = GL_TRUE;
679 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
680 extensions->ARB_texture_cube_map = GL_TRUE;
681 extensions->ARB_texture_env_combine = GL_TRUE;
682 extensions->ARB_texture_env_crossbar = GL_TRUE;
683 extensions->ARB_texture_env_dot3 = GL_TRUE;
684 extensions->ARB_vertex_program = GL_TRUE;
685 extensions->ARB_vertex_shader = GL_TRUE;
686
687 extensions->EXT_blend_color = GL_TRUE;
688 extensions->EXT_blend_func_separate = GL_TRUE;
689 extensions->EXT_blend_minmax = GL_TRUE;
690 extensions->EXT_gpu_program_parameters = GL_TRUE;
691 extensions->EXT_pixel_buffer_object = GL_TRUE;
692 extensions->EXT_point_parameters = GL_TRUE;
693 extensions->EXT_provoking_vertex = GL_TRUE;
694
695 extensions->EXT_texture_env_dot3 = GL_TRUE;
696 extensions->EXT_vertex_array_bgra = GL_TRUE;
697
698 extensions->ATI_texture_env_combine3 = GL_TRUE;
699
700 extensions->MESA_pack_invert = GL_TRUE;
701
702 extensions->NV_fog_distance = GL_TRUE;
703 extensions->NV_texture_env_combine4 = GL_TRUE;
704 extensions->NV_texture_rectangle = GL_TRUE;
705
706 extensions->OES_EGL_image = GL_TRUE;
707 extensions->OES_EGL_image_external = GL_TRUE;
708 extensions->OES_draw_texture = GL_TRUE;
709
710 /* Expose the extensions which directly correspond to gallium caps. */
711 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
712 if (screen->get_param(screen, cap_mapping[i].cap)) {
713 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
714 }
715 }
716
717 /* Expose the extensions which directly correspond to gallium formats. */
718 init_format_extensions(screen, extensions, rendertarget_mapping,
719 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
720 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
721 init_format_extensions(screen, extensions, depthstencil_mapping,
722 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
723 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
724 init_format_extensions(screen, extensions, texture_mapping,
725 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
726 PIPE_BIND_SAMPLER_VIEW);
727 init_format_extensions(screen, extensions, vertex_mapping,
728 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
729 PIPE_BIND_VERTEX_BUFFER);
730
731 /* Figure out GLSL support. */
732 glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
733
734 consts->GLSLVersion = glsl_feature_level;
735 if (glsl_feature_level >= 410)
736 consts->GLSLVersion = 410;
737
738 _mesa_override_glsl_version(consts);
739
740 if (options->force_glsl_version > 0 &&
741 options->force_glsl_version <= consts->GLSLVersion) {
742 consts->ForceGLSLVersion = options->force_glsl_version;
743 }
744
745 if (glsl_feature_level >= 400)
746 extensions->ARB_gpu_shader5 = GL_TRUE;
747 if (glsl_feature_level >= 410)
748 extensions->ARB_shader_precision = GL_TRUE;
749
750 /* This extension needs full OpenGL 3.2, but we don't know if that's
751 * supported at this point. Only check the GLSL version. */
752 if (consts->GLSLVersion >= 150 &&
753 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
754 extensions->AMD_vertex_shader_layer = GL_TRUE;
755 }
756
757 if (consts->GLSLVersion >= 130) {
758 consts->NativeIntegers = GL_TRUE;
759 consts->MaxClipPlanes = 8;
760
761 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
762 consts->VertexID_is_zero_based = GL_TRUE;
763 }
764
765 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
766 extensions->ARB_conservative_depth = GL_TRUE;
767 extensions->ARB_shading_language_packing = GL_TRUE;
768 extensions->OES_depth_texture_cube_map = GL_TRUE;
769 extensions->ARB_shading_language_420pack = GL_TRUE;
770 extensions->ARB_texture_query_levels = GL_TRUE;
771 extensions->ARB_shader_subroutine = GL_TRUE;
772
773 if (!options->disable_shader_bit_encoding) {
774 extensions->ARB_shader_bit_encoding = GL_TRUE;
775 }
776
777 extensions->EXT_shader_integer_mix = GL_TRUE;
778 } else {
779 /* Optional integer support for GLSL 1.2. */
780 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
781 PIPE_SHADER_CAP_INTEGERS) &&
782 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
783 PIPE_SHADER_CAP_INTEGERS)) {
784 consts->NativeIntegers = GL_TRUE;
785
786 extensions->EXT_shader_integer_mix = GL_TRUE;
787 }
788
789 /* Integer textures make no sense before GLSL 1.30 */
790 extensions->EXT_texture_integer = GL_FALSE;
791 }
792
793 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
794
795 /* Below are the cases which cannot be moved into tables easily. */
796
797 if (!has_lib_dxtc && !options->force_s3tc_enable) {
798 extensions->EXT_texture_compression_s3tc = GL_FALSE;
799 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
800 }
801
802 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
803 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
804 extensions->ARB_tessellation_shader = GL_TRUE;
805 }
806
807 if (screen->fence_finish) {
808 extensions->ARB_sync = GL_TRUE;
809 }
810
811 /* Maximum sample count. */
812 {
813 enum pipe_format color_formats[] = {
814 PIPE_FORMAT_R8G8B8A8_UNORM,
815 PIPE_FORMAT_B8G8R8A8_UNORM,
816 PIPE_FORMAT_A8R8G8B8_UNORM,
817 PIPE_FORMAT_A8B8G8R8_UNORM,
818 };
819 enum pipe_format depth_formats[] = {
820 PIPE_FORMAT_Z16_UNORM,
821 PIPE_FORMAT_Z24X8_UNORM,
822 PIPE_FORMAT_X8Z24_UNORM,
823 PIPE_FORMAT_Z32_UNORM,
824 PIPE_FORMAT_Z32_FLOAT
825 };
826 enum pipe_format int_formats[] = {
827 PIPE_FORMAT_R8G8B8A8_SINT
828 };
829
830 consts->MaxSamples =
831 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
832 color_formats, 16,
833 PIPE_BIND_RENDER_TARGET);
834
835 consts->MaxColorTextureSamples =
836 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
837 color_formats, consts->MaxSamples,
838 PIPE_BIND_SAMPLER_VIEW);
839
840 consts->MaxDepthTextureSamples =
841 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
842 depth_formats, consts->MaxSamples,
843 PIPE_BIND_SAMPLER_VIEW);
844
845 consts->MaxIntegerSamples =
846 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
847 int_formats, consts->MaxSamples,
848 PIPE_BIND_SAMPLER_VIEW);
849 }
850 if (consts->MaxSamples == 1) {
851 /* one sample doesn't really make sense */
852 consts->MaxSamples = 0;
853 }
854 else if (consts->MaxSamples >= 2) {
855 extensions->EXT_framebuffer_multisample = GL_TRUE;
856 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
857 }
858
859 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
860 consts->FakeSWMSAA = GL_TRUE;
861 extensions->EXT_framebuffer_multisample = GL_TRUE;
862 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
863 extensions->ARB_texture_multisample = GL_TRUE;
864 }
865
866 if (consts->MaxDualSourceDrawBuffers > 0 &&
867 !options->disable_blend_func_extended)
868 extensions->ARB_blend_func_extended = GL_TRUE;
869
870 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
871 extensions->ARB_timer_query) {
872 extensions->EXT_timer_query = GL_TRUE;
873 }
874
875 if (extensions->ARB_transform_feedback2 &&
876 extensions->ARB_draw_instanced) {
877 extensions->ARB_transform_feedback_instanced = GL_TRUE;
878 }
879 if (options->force_glsl_extensions_warn)
880 consts->ForceGLSLExtensionsWarn = 1;
881
882 if (options->disable_glsl_line_continuations)
883 consts->DisableGLSLLineContinuations = 1;
884
885 if (options->allow_glsl_extension_directive_midshader)
886 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
887
888 consts->MinMapBufferAlignment =
889 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
890
891 if (extensions->ARB_texture_buffer_object) {
892 consts->MaxTextureBufferSize =
893 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
894 (1u << 31) - 1);
895 consts->TextureBufferOffsetAlignment =
896 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
897
898 if (consts->TextureBufferOffsetAlignment)
899 extensions->ARB_texture_buffer_range = GL_TRUE;
900
901 init_format_extensions(screen, extensions, tbo_rgb32,
902 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
903 PIPE_BIND_SAMPLER_VIEW);
904 }
905
906 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
907 * If the number of available texture indirections is very limited, then we
908 * prefer to disable varying packing rather than run the risk of varying
909 * packing preventing a shader from running.
910 */
911 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
912 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
913 /* We can't disable varying packing if transform feedback is available,
914 * because transform feedback code assumes a packed varying layout.
915 */
916 if (!extensions->EXT_transform_feedback)
917 consts->DisableVaryingPacking = GL_TRUE;
918 }
919
920 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
921 if (consts->MaxViewports >= 16) {
922 if (glsl_feature_level >= 400) {
923 consts->ViewportBounds.Min = -32768.0;
924 consts->ViewportBounds.Max = 32767.0;
925 } else {
926 consts->ViewportBounds.Min = -16384.0;
927 consts->ViewportBounds.Max = 16383.0;
928 }
929 extensions->ARB_viewport_array = GL_TRUE;
930 extensions->ARB_fragment_layer_viewport = GL_TRUE;
931 if (extensions->AMD_vertex_shader_layer)
932 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
933 }
934
935 /* GL_ARB_ES3_compatibility.
936 *
937 * Assume that ES3 is supported if GLSL 3.30 is supported.
938 * (OpenGL 3.3 is a requirement for that extension.)
939 */
940 if (consts->GLSLVersion >= 330 &&
941 /* Requirements for ETC2 emulation. */
942 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
943 PIPE_TEXTURE_2D, 0,
944 PIPE_BIND_SAMPLER_VIEW) &&
945 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
946 PIPE_TEXTURE_2D, 0,
947 PIPE_BIND_SAMPLER_VIEW) &&
948 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
949 PIPE_TEXTURE_2D, 0,
950 PIPE_BIND_SAMPLER_VIEW) &&
951 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
952 PIPE_TEXTURE_2D, 0,
953 PIPE_BIND_SAMPLER_VIEW) &&
954 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
955 PIPE_TEXTURE_2D, 0,
956 PIPE_BIND_SAMPLER_VIEW) &&
957 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
958 PIPE_TEXTURE_2D, 0,
959 PIPE_BIND_SAMPLER_VIEW)) {
960 extensions->ARB_ES3_compatibility = GL_TRUE;
961 }
962
963 if (screen->get_video_param &&
964 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
965 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
966 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
967 extensions->NV_vdpau_interop = GL_TRUE;
968 }
969
970 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
971 PIPE_SHADER_CAP_DOUBLES) &&
972 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
973 PIPE_SHADER_CAP_DOUBLES)) {
974 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
975 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
976 }
977
978 if ((ST_DEBUG & DEBUG_GREMEDY) &&
979 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
980 extensions->GREMEDY_string_marker = GL_TRUE;
981 }