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st/mesa: expose EXT_disjoint_timer_query
[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 "compiler/nir/nir.h"
30
31 #include "main/imports.h"
32 #include "main/context.h"
33 #include "main/macros.h"
34 #include "main/version.h"
35
36 #include "pipe/p_context.h"
37 #include "pipe/p_defines.h"
38 #include "pipe/p_screen.h"
39 #include "tgsi/tgsi_from_mesa.h"
40 #include "util/u_math.h"
41
42 #include "st_context.h"
43 #include "st_debug.h"
44 #include "st_extensions.h"
45 #include "st_format.h"
46
47
48 /*
49 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
50 * avoid evaluating arguments (which are often function calls) more than once.
51 */
52
53 static unsigned _min(unsigned a, unsigned b)
54 {
55 return (a < b) ? a : b;
56 }
57
58 static float _maxf(float a, float b)
59 {
60 return (a > b) ? a : b;
61 }
62
63 static int _clamp(int a, int min, int max)
64 {
65 if (a < min)
66 return min;
67 else if (a > max)
68 return max;
69 else
70 return a;
71 }
72
73
74 /**
75 * Query driver to get implementation limits.
76 * Note that we have to limit/clamp against Mesa's internal limits too.
77 */
78 void st_init_limits(struct pipe_screen *screen,
79 struct gl_constants *c, struct gl_extensions *extensions,
80 gl_api api)
81 {
82 int supported_irs;
83 unsigned sh;
84 boolean can_ubo = TRUE;
85 int temp;
86 bool ssbo_atomic = true;
87
88 c->MaxTextureLevels
89 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
90 MAX_TEXTURE_LEVELS);
91
92 c->Max3DTextureLevels
93 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
94 MAX_3D_TEXTURE_LEVELS);
95
96 c->MaxCubeTextureLevels
97 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
98 MAX_CUBE_TEXTURE_LEVELS);
99
100 c->MaxTextureRectSize
101 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
102
103 c->MaxArrayTextureLayers
104 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
105
106 /* Define max viewport size and max renderbuffer size in terms of
107 * max texture size (note: max tex RECT size = max tex 2D size).
108 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
109 */
110 c->MaxViewportWidth =
111 c->MaxViewportHeight =
112 c->MaxRenderbufferSize = c->MaxTextureRectSize;
113
114 c->SubPixelBits =
115 c->ViewportSubpixelBits =
116 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
117
118 c->MaxDrawBuffers = c->MaxColorAttachments =
119 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
120 1, MAX_DRAW_BUFFERS);
121
122 c->MaxDualSourceDrawBuffers =
123 _clamp(screen->get_param(screen,
124 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
125 0, MAX_DRAW_BUFFERS);
126
127 c->MaxLineWidth =
128 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
129 c->MaxLineWidthAA =
130 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
131
132 c->MaxPointSize =
133 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
134 c->MaxPointSizeAA =
135 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
136
137 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
138 * for non-aa sizes, but we can go down to 0.0 for aa points.
139 */
140 c->MinPointSize = 1.0f;
141 c->MinPointSizeAA = 0.0f;
142
143 c->MaxTextureMaxAnisotropy =
144 _maxf(2.0f,
145 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
146
147 c->MaxTextureLodBias =
148 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
149
150 c->QuadsFollowProvokingVertexConvention =
151 screen->get_param(screen,
152 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
153
154 c->MaxUniformBlockSize =
155 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
156 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
157 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
158 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
159 */
160 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
161
162 if (c->MaxUniformBlockSize < 16384) {
163 can_ubo = FALSE;
164 }
165
166 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
167 struct gl_shader_compiler_options *options;
168 struct gl_program_constants *pc;
169 const nir_shader_compiler_options *nir_options = NULL;
170
171 if (screen->get_compiler_options) {
172 nir_options = (const nir_shader_compiler_options *)
173 screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
174 }
175
176 const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
177 pc = &c->Program[stage];
178 options = &c->ShaderCompilerOptions[stage];
179 c->ShaderCompilerOptions[stage].NirOptions = nir_options;
180
181 if (sh == PIPE_SHADER_COMPUTE) {
182 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
183 continue;
184 supported_irs =
185 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
186 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
187 continue;
188 }
189
190 pc->MaxTextureImageUnits =
191 _min(screen->get_shader_param(screen, sh,
192 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
193 MAX_TEXTURE_IMAGE_UNITS);
194
195 pc->MaxInstructions =
196 pc->MaxNativeInstructions =
197 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
198 pc->MaxAluInstructions =
199 pc->MaxNativeAluInstructions =
200 screen->get_shader_param(screen, sh,
201 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
202 pc->MaxTexInstructions =
203 pc->MaxNativeTexInstructions =
204 screen->get_shader_param(screen, sh,
205 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
206 pc->MaxTexIndirections =
207 pc->MaxNativeTexIndirections =
208 screen->get_shader_param(screen, sh,
209 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
210 pc->MaxAttribs =
211 pc->MaxNativeAttribs =
212 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
213 pc->MaxTemps =
214 pc->MaxNativeTemps =
215 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
216 pc->MaxAddressRegs =
217 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
218
219 pc->MaxUniformComponents =
220 screen->get_shader_param(screen, sh,
221 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
222 pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
223 MAX_UNIFORMS * 4);
224
225 pc->MaxParameters =
226 pc->MaxNativeParameters = pc->MaxUniformComponents / 4;
227 pc->MaxInputComponents =
228 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
229 pc->MaxOutputComponents =
230 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
231
232
233 pc->MaxUniformBlocks =
234 screen->get_shader_param(screen, sh,
235 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
236 if (pc->MaxUniformBlocks)
237 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
238 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
239
240 pc->MaxCombinedUniformComponents =
241 pc->MaxUniformComponents +
242 (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
243
244 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
245 if (temp) {
246 /*
247 * for separate atomic counters get the actual hw limits
248 * per stage on atomic counters and buffers
249 */
250 ssbo_atomic = false;
251 pc->MaxAtomicCounters = temp;
252 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
253 pc->MaxShaderStorageBlocks = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
254 } else {
255 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
256 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
257 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
258 }
259 pc->MaxImageUniforms = screen->get_shader_param(
260 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
261
262 /* Gallium doesn't really care about local vs. env parameters so use the
263 * same limits.
264 */
265 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
266 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
267
268 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
269 pc->LowInt.RangeMin = 31;
270 pc->LowInt.RangeMax = 30;
271 pc->LowInt.Precision = 0;
272 pc->MediumInt = pc->HighInt = pc->LowInt;
273 }
274
275 /* TODO: make these more fine-grained if anyone needs it */
276 options->MaxIfDepth =
277 screen->get_shader_param(screen, sh,
278 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
279 options->EmitNoLoops =
280 !screen->get_shader_param(screen, sh,
281 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
282 options->EmitNoMainReturn =
283 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
284
285 options->EmitNoCont =
286 !screen->get_shader_param(screen, sh,
287 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
288
289 options->EmitNoIndirectInput =
290 !screen->get_shader_param(screen, sh,
291 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
292 options->EmitNoIndirectOutput =
293 !screen->get_shader_param(screen, sh,
294 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
295 options->EmitNoIndirectTemp =
296 !screen->get_shader_param(screen, sh,
297 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
298 options->EmitNoIndirectUniform =
299 !screen->get_shader_param(screen, sh,
300 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
301
302 if (pc->MaxNativeInstructions &&
303 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
304 can_ubo = FALSE;
305 }
306
307 if (options->EmitNoLoops)
308 options->MaxUnrollIterations =
309 MIN2(screen->get_shader_param(screen, sh,
310 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
311 65536);
312 else
313 options->MaxUnrollIterations =
314 screen->get_shader_param(screen, sh,
315 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
316
317 options->LowerCombinedClipCullDistance = true;
318 options->LowerBufferInterfaceBlocks = true;
319 }
320
321 c->MaxUserAssignableUniformLocations =
322 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
323 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
324 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
325 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
326 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
327
328 c->GLSLOptimizeConservatively =
329 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
330 c->LowerTessLevel = true;
331 c->LowerCsDerivedVariables = true;
332 c->PrimitiveRestartForPatches =
333 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
334
335 c->MaxCombinedTextureImageUnits =
336 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
337 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
338 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
339 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
340 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
341 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
342
343 /* This depends on program constants. */
344 c->MaxTextureCoordUnits
345 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
346 MAX_TEXTURE_COORD_UNITS);
347
348 c->MaxTextureUnits =
349 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
350 c->MaxTextureCoordUnits);
351
352 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
353 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
354
355 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
356 * of inputs. It's always 2 colors + N generic inputs. */
357 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
358 PIPE_SHADER_CAP_MAX_INPUTS);
359 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
360 c->MaxGeometryOutputVertices =
361 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
362 c->MaxGeometryTotalOutputComponents =
363 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
364 c->MaxGeometryShaderInvocations =
365 screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
366 c->MaxTessPatchComponents =
367 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
368 MAX_VARYING) * 4;
369
370 c->MinProgramTexelOffset =
371 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
372 c->MaxProgramTexelOffset =
373 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
374
375 c->MaxProgramTextureGatherComponents =
376 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
377 c->MinProgramTextureGatherOffset =
378 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
379 c->MaxProgramTextureGatherOffset =
380 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
381
382 c->MaxTransformFeedbackBuffers =
383 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
384 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
385 MAX_FEEDBACK_BUFFERS);
386 c->MaxTransformFeedbackSeparateComponents =
387 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
388 c->MaxTransformFeedbackInterleavedComponents =
389 screen->get_param(screen,
390 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
391 c->MaxVertexStreams =
392 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
393
394 /* The vertex stream must fit into pipe_stream_output_info::stream */
395 assert(c->MaxVertexStreams <= 4);
396
397 c->MaxVertexAttribStride
398 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
399
400 c->StripTextureBorder = GL_TRUE;
401
402 c->GLSLSkipStrictMaxUniformLimitCheck =
403 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
404
405 c->UniformBufferOffsetAlignment =
406 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
407
408 if (can_ubo) {
409 extensions->ARB_uniform_buffer_object = GL_TRUE;
410 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
411 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
412 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
413 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
414 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
415 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks,
416 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
417 }
418
419 c->GLSLFragCoordIsSysVal =
420 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
421 c->GLSLFrontFacingIsSysVal =
422 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
423
424 /* GL_ARB_get_program_binary
425 *
426 * The QT framework has a bug in their shader program cache, which is built
427 * on GL_ARB_get_program_binary. In an effort to allow them to fix the bug
428 * we don't enable more than 1 binary format for compatibility profiles.
429 */
430 if (api != API_OPENGL_COMPAT &&
431 screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
432 c->NumProgramBinaryFormats = 1;
433
434 c->MaxAtomicBufferBindings =
435 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
436
437 if (!ssbo_atomic) {
438 /* for separate atomic buffers - there atomic buffer size will be
439 limited */
440 c->MaxAtomicBufferSize = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
441 /* on all HW with separate atomic (evergreen) the following
442 lines are true. not sure it's worth adding CAPs for this at this
443 stage. */
444 c->MaxCombinedAtomicCounters = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
445 c->MaxCombinedAtomicBuffers = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
446 } else {
447 c->MaxCombinedAtomicBuffers =
448 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
449 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
450 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
451 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
452 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
453 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
454 }
455
456 if (c->MaxCombinedAtomicBuffers > 0) {
457 extensions->ARB_shader_atomic_counters = GL_TRUE;
458 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
459 }
460
461 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
462 c->ShaderStorageBufferOffsetAlignment =
463 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
464 if (c->ShaderStorageBufferOffsetAlignment) {
465 /* for hw atomic counters leaves these at default for now */
466 if (ssbo_atomic)
467 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
468 c->MaxCombinedAtomicBuffers;
469 c->MaxCombinedShaderOutputResources +=
470 c->MaxCombinedShaderStorageBlocks;
471 c->MaxShaderStorageBlockSize =
472 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
473 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
474 }
475
476 c->MaxCombinedImageUniforms =
477 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
478 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
479 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
480 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
481 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
482 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
483 c->MaxImageUnits = MAX_IMAGE_UNITS;
484 if (c->MaxCombinedImageUniforms) {
485 extensions->ARB_shader_image_load_store = GL_TRUE;
486 extensions->ARB_shader_image_size = GL_TRUE;
487 }
488
489 /* ARB_framebuffer_no_attachments */
490 c->MaxFramebufferWidth = c->MaxViewportWidth;
491 c->MaxFramebufferHeight = c->MaxViewportHeight;
492 /* NOTE: we cheat here a little by assuming that
493 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
494 * number of layers as we need, although we technically
495 * could have more the generality is not really useful
496 * in practicality.
497 */
498 c->MaxFramebufferLayers =
499 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
500
501 c->MaxWindowRectangles =
502 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
503
504 c->SparseBufferPageSize =
505 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
506
507 c->AllowMappedBuffersDuringExecution =
508 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
509
510 c->UseSTD430AsDefaultPacking =
511 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
512
513 c->MaxSubpixelPrecisionBiasBits =
514 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
515
516 c->ConservativeRasterDilateRange[0] =
517 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
518 c->ConservativeRasterDilateRange[1] =
519 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
520 c->ConservativeRasterDilateGranularity =
521 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
522
523 /* limit the max combined shader output resources to a driver limit */
524 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
525 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
526 c->MaxCombinedShaderOutputResources = temp;
527 }
528
529
530 /**
531 * Given a member \c x of struct gl_extensions, return offset of
532 * \c x in bytes.
533 */
534 #define o(x) offsetof(struct gl_extensions, x)
535
536
537 struct st_extension_cap_mapping {
538 int extension_offset;
539 int cap;
540 };
541
542 struct st_extension_format_mapping {
543 int extension_offset[2];
544 enum pipe_format format[32];
545
546 /* If TRUE, at least one format must be supported for the extensions to be
547 * advertised. If FALSE, all the formats must be supported. */
548 GLboolean need_at_least_one;
549 };
550
551 /**
552 * Enable extensions if certain pipe formats are supported by the driver.
553 * What extensions will be enabled and what formats must be supported is
554 * described by the array of st_extension_format_mapping.
555 *
556 * target and bind_flags are passed to is_format_supported.
557 */
558 static void
559 init_format_extensions(struct pipe_screen *screen,
560 struct gl_extensions *extensions,
561 const struct st_extension_format_mapping *mapping,
562 unsigned num_mappings,
563 enum pipe_texture_target target,
564 unsigned bind_flags)
565 {
566 GLboolean *extension_table = (GLboolean *) extensions;
567 unsigned i;
568 int j;
569 int num_formats = ARRAY_SIZE(mapping->format);
570 int num_ext = ARRAY_SIZE(mapping->extension_offset);
571
572 for (i = 0; i < num_mappings; i++) {
573 int num_supported = 0;
574
575 /* Examine each format in the list. */
576 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
577 if (screen->is_format_supported(screen, mapping[i].format[j],
578 target, 0, 0, bind_flags)) {
579 num_supported++;
580 }
581 }
582
583 if (!num_supported ||
584 (!mapping[i].need_at_least_one && num_supported != j)) {
585 continue;
586 }
587
588 /* Enable all extensions in the list. */
589 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
590 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
591 }
592 }
593
594
595 /**
596 * Given a list of formats and bind flags, return the maximum number
597 * of samples supported by any of those formats.
598 */
599 static unsigned
600 get_max_samples_for_formats(struct pipe_screen *screen,
601 unsigned num_formats,
602 const enum pipe_format *formats,
603 unsigned max_samples,
604 unsigned bind)
605 {
606 unsigned i, f;
607
608 for (i = max_samples; i > 0; --i) {
609 for (f = 0; f < num_formats; f++) {
610 if (screen->is_format_supported(screen, formats[f],
611 PIPE_TEXTURE_2D, i, i, bind)) {
612 return i;
613 }
614 }
615 }
616 return 0;
617 }
618
619 static unsigned
620 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
621 unsigned num_formats,
622 const enum pipe_format *formats,
623 unsigned max_samples,
624 unsigned num_storage_samples,
625 unsigned bind)
626 {
627 unsigned i, f;
628
629 for (i = max_samples; i > 0; --i) {
630 for (f = 0; f < num_formats; f++) {
631 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
632 i, num_storage_samples, bind)) {
633 return i;
634 }
635 }
636 }
637 return 0;
638 }
639
640 /**
641 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
642 * which GL extensions are supported.
643 * Quite a few extensions are always supported because they are standard
644 * features or can be built on top of other gallium features.
645 * Some fine tuning may still be needed.
646 */
647 void st_init_extensions(struct pipe_screen *screen,
648 struct gl_constants *consts,
649 struct gl_extensions *extensions,
650 struct st_config_options *options,
651 gl_api api)
652 {
653 unsigned i;
654 GLboolean *extension_table = (GLboolean *) extensions;
655
656 static const struct st_extension_cap_mapping cap_mapping[] = {
657 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
658 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
659 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
660 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
661 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
662 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
663 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
664 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
665 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
666 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
667 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
668 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
669 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
670 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
671 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
672 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
673 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
674 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
675 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
676 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
677 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
678 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
679 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
680 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
681 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
682 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
683 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
684 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
685 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
686 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
687 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
688 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
689 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
690 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
691 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
692 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
693 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
694 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
695 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
696 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
697 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
698 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
699 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
700 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
701 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
702 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
703 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
704 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
705 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
706 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
707
708 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
709
710 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
711 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
712 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
713 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
714 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
715 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
716 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
717 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
718 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
719 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
720 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
721 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
722 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
723 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
724
725 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
726 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
727 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
728 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
729 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
730 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
731 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
732 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
733 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
734 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
735 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
736 /* GL_NV_point_sprite is not supported by gallium because we don't
737 * support the GL_POINT_SPRITE_R_MODE_NV option. */
738
739 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
740 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
741 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
742 };
743
744 /* Required: render target and sampler support */
745 static const struct st_extension_format_mapping rendertarget_mapping[] = {
746 { { o(ARB_texture_float) },
747 { PIPE_FORMAT_R32G32B32A32_FLOAT,
748 PIPE_FORMAT_R16G16B16A16_FLOAT } },
749
750 { { o(OES_texture_float) },
751 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
752
753 { { o(OES_texture_half_float) },
754 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
755
756 { { o(ARB_texture_rgb10_a2ui) },
757 { PIPE_FORMAT_R10G10B10A2_UINT,
758 PIPE_FORMAT_B10G10R10A2_UINT },
759 GL_TRUE }, /* at least one format must be supported */
760
761 { { o(EXT_framebuffer_sRGB) },
762 { PIPE_FORMAT_A8B8G8R8_SRGB,
763 PIPE_FORMAT_B8G8R8A8_SRGB,
764 PIPE_FORMAT_R8G8B8A8_SRGB },
765 GL_TRUE }, /* at least one format must be supported */
766
767 { { o(EXT_packed_float) },
768 { PIPE_FORMAT_R11G11B10_FLOAT } },
769
770 { { o(EXT_texture_integer) },
771 { PIPE_FORMAT_R32G32B32A32_UINT,
772 PIPE_FORMAT_R32G32B32A32_SINT } },
773
774 { { o(ARB_texture_rg) },
775 { PIPE_FORMAT_R8_UNORM,
776 PIPE_FORMAT_R8G8_UNORM } },
777 };
778
779 /* Required: depth stencil and sampler support */
780 static const struct st_extension_format_mapping depthstencil_mapping[] = {
781 { { o(ARB_depth_buffer_float) },
782 { PIPE_FORMAT_Z32_FLOAT,
783 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
784 };
785
786 /* Required: sampler support */
787 static const struct st_extension_format_mapping texture_mapping[] = {
788 { { o(ARB_texture_compression_rgtc) },
789 { PIPE_FORMAT_RGTC1_UNORM,
790 PIPE_FORMAT_RGTC1_SNORM,
791 PIPE_FORMAT_RGTC2_UNORM,
792 PIPE_FORMAT_RGTC2_SNORM } },
793
794 { { o(EXT_texture_compression_latc) },
795 { PIPE_FORMAT_LATC1_UNORM,
796 PIPE_FORMAT_LATC1_SNORM,
797 PIPE_FORMAT_LATC2_UNORM,
798 PIPE_FORMAT_LATC2_SNORM } },
799
800 { { o(EXT_texture_compression_s3tc),
801 o(ANGLE_texture_compression_dxt) },
802 { PIPE_FORMAT_DXT1_RGB,
803 PIPE_FORMAT_DXT1_RGBA,
804 PIPE_FORMAT_DXT3_RGBA,
805 PIPE_FORMAT_DXT5_RGBA } },
806
807 { { o(ARB_texture_compression_bptc) },
808 { PIPE_FORMAT_BPTC_RGBA_UNORM,
809 PIPE_FORMAT_BPTC_SRGBA,
810 PIPE_FORMAT_BPTC_RGB_FLOAT,
811 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
812
813 { { o(KHR_texture_compression_astc_ldr) },
814 { PIPE_FORMAT_ASTC_4x4,
815 PIPE_FORMAT_ASTC_5x4,
816 PIPE_FORMAT_ASTC_5x5,
817 PIPE_FORMAT_ASTC_6x5,
818 PIPE_FORMAT_ASTC_6x6,
819 PIPE_FORMAT_ASTC_8x5,
820 PIPE_FORMAT_ASTC_8x6,
821 PIPE_FORMAT_ASTC_8x8,
822 PIPE_FORMAT_ASTC_10x5,
823 PIPE_FORMAT_ASTC_10x6,
824 PIPE_FORMAT_ASTC_10x8,
825 PIPE_FORMAT_ASTC_10x10,
826 PIPE_FORMAT_ASTC_12x10,
827 PIPE_FORMAT_ASTC_12x12,
828 PIPE_FORMAT_ASTC_4x4_SRGB,
829 PIPE_FORMAT_ASTC_5x4_SRGB,
830 PIPE_FORMAT_ASTC_5x5_SRGB,
831 PIPE_FORMAT_ASTC_6x5_SRGB,
832 PIPE_FORMAT_ASTC_6x6_SRGB,
833 PIPE_FORMAT_ASTC_8x5_SRGB,
834 PIPE_FORMAT_ASTC_8x6_SRGB,
835 PIPE_FORMAT_ASTC_8x8_SRGB,
836 PIPE_FORMAT_ASTC_10x5_SRGB,
837 PIPE_FORMAT_ASTC_10x6_SRGB,
838 PIPE_FORMAT_ASTC_10x8_SRGB,
839 PIPE_FORMAT_ASTC_10x10_SRGB,
840 PIPE_FORMAT_ASTC_12x10_SRGB,
841 PIPE_FORMAT_ASTC_12x12_SRGB } },
842
843 /* ASTC software fallback support. */
844 { { o(KHR_texture_compression_astc_ldr) },
845 { PIPE_FORMAT_R8G8B8A8_UNORM,
846 PIPE_FORMAT_R8G8B8A8_SRGB } },
847
848 { { o(EXT_texture_shared_exponent) },
849 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
850
851 { { o(EXT_texture_snorm) },
852 { PIPE_FORMAT_R8G8B8A8_SNORM } },
853
854 { { o(EXT_texture_sRGB),
855 o(EXT_texture_sRGB_decode) },
856 { PIPE_FORMAT_A8B8G8R8_SRGB,
857 PIPE_FORMAT_B8G8R8A8_SRGB,
858 PIPE_FORMAT_A8R8G8B8_SRGB,
859 PIPE_FORMAT_R8G8B8A8_SRGB},
860 GL_TRUE }, /* at least one format must be supported */
861
862 { { o(EXT_texture_type_2_10_10_10_REV) },
863 { PIPE_FORMAT_R10G10B10A2_UNORM,
864 PIPE_FORMAT_B10G10R10A2_UNORM },
865 GL_TRUE }, /* at least one format must be supported */
866
867 { { o(ATI_texture_compression_3dc) },
868 { PIPE_FORMAT_LATC2_UNORM } },
869
870 { { o(MESA_ycbcr_texture) },
871 { PIPE_FORMAT_UYVY,
872 PIPE_FORMAT_YUYV },
873 GL_TRUE }, /* at least one format must be supported */
874
875 { { o(OES_compressed_ETC1_RGB8_texture) },
876 { PIPE_FORMAT_ETC1_RGB8,
877 PIPE_FORMAT_R8G8B8A8_UNORM },
878 GL_TRUE }, /* at least one format must be supported */
879
880 { { o(ARB_stencil_texturing),
881 o(ARB_texture_stencil8) },
882 { PIPE_FORMAT_X24S8_UINT,
883 PIPE_FORMAT_S8X24_UINT },
884 GL_TRUE }, /* at least one format must be supported */
885 };
886
887 /* Required: vertex fetch support. */
888 static const struct st_extension_format_mapping vertex_mapping[] = {
889 { { o(EXT_vertex_array_bgra) },
890 { PIPE_FORMAT_B8G8R8A8_UNORM } },
891 { { o(ARB_vertex_type_2_10_10_10_rev) },
892 { PIPE_FORMAT_R10G10B10A2_UNORM,
893 PIPE_FORMAT_B10G10R10A2_UNORM,
894 PIPE_FORMAT_R10G10B10A2_SNORM,
895 PIPE_FORMAT_B10G10R10A2_SNORM,
896 PIPE_FORMAT_R10G10B10A2_USCALED,
897 PIPE_FORMAT_B10G10R10A2_USCALED,
898 PIPE_FORMAT_R10G10B10A2_SSCALED,
899 PIPE_FORMAT_B10G10R10A2_SSCALED } },
900 { { o(ARB_vertex_type_10f_11f_11f_rev) },
901 { PIPE_FORMAT_R11G11B10_FLOAT } },
902 };
903
904 static const struct st_extension_format_mapping tbo_rgb32[] = {
905 { {o(ARB_texture_buffer_object_rgb32) },
906 { PIPE_FORMAT_R32G32B32_FLOAT,
907 PIPE_FORMAT_R32G32B32_UINT,
908 PIPE_FORMAT_R32G32B32_SINT,
909 } },
910 };
911
912 /*
913 * Extensions that are supported by all Gallium drivers:
914 */
915 extensions->ARB_ES2_compatibility = GL_TRUE;
916 extensions->ARB_depth_texture = GL_TRUE;
917 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
918 extensions->ARB_explicit_attrib_location = GL_TRUE;
919 extensions->ARB_explicit_uniform_location = GL_TRUE;
920 extensions->ARB_fragment_coord_conventions = GL_TRUE;
921 extensions->ARB_fragment_program = GL_TRUE;
922 extensions->ARB_fragment_program_shadow = GL_TRUE;
923 extensions->ARB_fragment_shader = GL_TRUE;
924 extensions->ARB_half_float_vertex = GL_TRUE;
925 extensions->ARB_internalformat_query = GL_TRUE;
926 extensions->ARB_internalformat_query2 = GL_TRUE;
927 extensions->ARB_map_buffer_range = GL_TRUE;
928 extensions->ARB_shadow = GL_TRUE;
929 extensions->ARB_sync = GL_TRUE;
930 extensions->ARB_texture_border_clamp = GL_TRUE;
931 extensions->ARB_texture_cube_map = GL_TRUE;
932 extensions->ARB_texture_env_combine = GL_TRUE;
933 extensions->ARB_texture_env_crossbar = GL_TRUE;
934 extensions->ARB_texture_env_dot3 = GL_TRUE;
935 extensions->ARB_vertex_program = GL_TRUE;
936 extensions->ARB_vertex_shader = GL_TRUE;
937
938 extensions->EXT_blend_color = GL_TRUE;
939 extensions->EXT_blend_func_separate = GL_TRUE;
940 extensions->EXT_blend_minmax = GL_TRUE;
941 extensions->EXT_gpu_program_parameters = GL_TRUE;
942 extensions->EXT_pixel_buffer_object = GL_TRUE;
943 extensions->EXT_point_parameters = GL_TRUE;
944 extensions->EXT_provoking_vertex = GL_TRUE;
945 extensions->EXT_stencil_two_side = GL_TRUE;
946 extensions->EXT_texture_env_dot3 = GL_TRUE;
947
948 extensions->ATI_fragment_shader = GL_TRUE;
949 extensions->ATI_texture_env_combine3 = GL_TRUE;
950
951 extensions->MESA_pack_invert = GL_TRUE;
952
953 extensions->NV_fog_distance = GL_TRUE;
954 extensions->NV_texture_env_combine4 = GL_TRUE;
955 extensions->NV_texture_rectangle = GL_TRUE;
956
957 extensions->OES_EGL_image = GL_TRUE;
958 extensions->OES_EGL_image_external = GL_TRUE;
959 extensions->OES_draw_texture = GL_TRUE;
960
961 /* Expose the extensions which directly correspond to gallium caps. */
962 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
963 if (screen->get_param(screen, cap_mapping[i].cap)) {
964 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
965 }
966 }
967
968 /* Expose the extensions which directly correspond to gallium formats. */
969 init_format_extensions(screen, extensions, rendertarget_mapping,
970 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
971 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
972 init_format_extensions(screen, extensions, depthstencil_mapping,
973 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
974 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
975 init_format_extensions(screen, extensions, texture_mapping,
976 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
977 PIPE_BIND_SAMPLER_VIEW);
978 init_format_extensions(screen, extensions, vertex_mapping,
979 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
980 PIPE_BIND_VERTEX_BUFFER);
981
982 /* Figure out GLSL support and set GLSLVersion to it. */
983 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
984 consts->GLSLVersionCompat =
985 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
986
987 const unsigned GLSLVersion =
988 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
989 consts->GLSLVersion;
990
991 _mesa_override_glsl_version(consts);
992
993 if (options->force_glsl_version > 0 &&
994 options->force_glsl_version <= GLSLVersion) {
995 consts->ForceGLSLVersion = options->force_glsl_version;
996 }
997
998 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
999
1000 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1001
1002 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1003
1004 consts->dri_config_options_sha1 = options->config_options_sha1;
1005
1006 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1007
1008 if (GLSLVersion >= 400)
1009 extensions->ARB_gpu_shader5 = GL_TRUE;
1010 if (GLSLVersion >= 410)
1011 extensions->ARB_shader_precision = GL_TRUE;
1012
1013 /* This extension needs full OpenGL 3.2, but we don't know if that's
1014 * supported at this point. Only check the GLSL version. */
1015 if (GLSLVersion >= 150 &&
1016 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1017 extensions->AMD_vertex_shader_layer = GL_TRUE;
1018 }
1019
1020 if (GLSLVersion >= 140) {
1021 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1022 extensions->ARB_enhanced_layouts = GL_TRUE;
1023 }
1024
1025 if (GLSLVersion >= 130) {
1026 consts->NativeIntegers = GL_TRUE;
1027 consts->MaxClipPlanes = 8;
1028
1029 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1030 consts->VertexID_is_zero_based = GL_TRUE;
1031 }
1032
1033 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1034 extensions->ARB_conservative_depth = GL_TRUE;
1035 extensions->ARB_shading_language_packing = GL_TRUE;
1036 extensions->OES_depth_texture_cube_map = GL_TRUE;
1037 extensions->ARB_shading_language_420pack = GL_TRUE;
1038 extensions->ARB_texture_query_levels = GL_TRUE;
1039
1040 extensions->ARB_shader_bit_encoding = GL_TRUE;
1041
1042 extensions->EXT_shader_integer_mix = GL_TRUE;
1043 extensions->ARB_arrays_of_arrays = GL_TRUE;
1044 extensions->MESA_shader_integer_functions = GL_TRUE;
1045 } else {
1046 /* Optional integer support for GLSL 1.2. */
1047 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1048 PIPE_SHADER_CAP_INTEGERS) &&
1049 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1050 PIPE_SHADER_CAP_INTEGERS)) {
1051 consts->NativeIntegers = GL_TRUE;
1052
1053 extensions->EXT_shader_integer_mix = GL_TRUE;
1054 }
1055
1056 /* Integer textures make no sense before GLSL 1.30 */
1057 extensions->EXT_texture_integer = GL_FALSE;
1058 }
1059
1060 consts->GLSLZeroInit = options->glsl_zero_init;
1061
1062 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1063
1064 /* Below are the cases which cannot be moved into tables easily. */
1065
1066 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1067 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1068 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1069 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1070 extensions->ARB_tessellation_shader = GL_TRUE;
1071 }
1072
1073 /* What this is really checking for is the ability to support multiple
1074 * invocations of a geometry shader. There is no separate cap for that, so
1075 * we check the GLSLVersion.
1076 */
1077 if (GLSLVersion >= 400 &&
1078 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1079 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1080 extensions->OES_geometry_shader = GL_TRUE;
1081 }
1082
1083 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1084 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1085 */
1086 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1087 extensions->ARB_gpu_shader5;
1088
1089 /* Maximum sample count. */
1090 {
1091 static const enum pipe_format color_formats[] = {
1092 PIPE_FORMAT_R8G8B8A8_UNORM,
1093 PIPE_FORMAT_B8G8R8A8_UNORM,
1094 PIPE_FORMAT_A8R8G8B8_UNORM,
1095 PIPE_FORMAT_A8B8G8R8_UNORM,
1096 };
1097 static const enum pipe_format depth_formats[] = {
1098 PIPE_FORMAT_Z16_UNORM,
1099 PIPE_FORMAT_Z24X8_UNORM,
1100 PIPE_FORMAT_X8Z24_UNORM,
1101 PIPE_FORMAT_Z32_UNORM,
1102 PIPE_FORMAT_Z32_FLOAT
1103 };
1104 static const enum pipe_format int_formats[] = {
1105 PIPE_FORMAT_R8G8B8A8_SINT
1106 };
1107 static const enum pipe_format void_formats[] = {
1108 PIPE_FORMAT_NONE
1109 };
1110
1111 consts->MaxSamples =
1112 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1113 color_formats, 16,
1114 PIPE_BIND_RENDER_TARGET);
1115
1116 consts->MaxImageSamples =
1117 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1118 color_formats, 16,
1119 PIPE_BIND_SHADER_IMAGE);
1120
1121 consts->MaxColorTextureSamples =
1122 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1123 color_formats, consts->MaxSamples,
1124 PIPE_BIND_SAMPLER_VIEW);
1125
1126 consts->MaxDepthTextureSamples =
1127 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1128 depth_formats, consts->MaxSamples,
1129 PIPE_BIND_SAMPLER_VIEW);
1130
1131 consts->MaxIntegerSamples =
1132 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1133 int_formats, consts->MaxSamples,
1134 PIPE_BIND_SAMPLER_VIEW);
1135
1136 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1137 consts->MaxFramebufferSamples =
1138 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1139 void_formats, 32,
1140 PIPE_BIND_RENDER_TARGET);
1141
1142 if (extensions->AMD_framebuffer_multisample_advanced) {
1143 /* AMD_framebuffer_multisample_advanced */
1144 /* This can be greater than storage samples. */
1145 consts->MaxColorFramebufferSamples =
1146 get_max_samples_for_formats_advanced(screen,
1147 ARRAY_SIZE(color_formats),
1148 color_formats, 16,
1149 consts->MaxSamples,
1150 PIPE_BIND_RENDER_TARGET);
1151
1152 /* If the driver supports N color samples, it means it supports
1153 * N samples and N storage samples. N samples >= N storage
1154 * samples.
1155 */
1156 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1157 consts->MaxDepthStencilFramebufferSamples =
1158 consts->MaxDepthTextureSamples;
1159
1160 assert(consts->MaxColorFramebufferSamples >=
1161 consts->MaxDepthStencilFramebufferSamples);
1162 assert(consts->MaxDepthStencilFramebufferSamples >=
1163 consts->MaxColorFramebufferStorageSamples);
1164
1165 consts->NumSupportedMultisampleModes = 0;
1166
1167 unsigned depth_samples_supported = 0;
1168
1169 for (unsigned samples = 2;
1170 samples <= consts->MaxDepthStencilFramebufferSamples;
1171 samples++) {
1172 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1173 PIPE_TEXTURE_2D, samples, samples,
1174 PIPE_BIND_DEPTH_STENCIL))
1175 depth_samples_supported |= 1 << samples;
1176 }
1177
1178 for (unsigned samples = 2;
1179 samples <= consts->MaxColorFramebufferSamples;
1180 samples++) {
1181 for (unsigned depth_samples = 2;
1182 depth_samples <= samples; depth_samples++) {
1183 if (!(depth_samples_supported & (1 << depth_samples)))
1184 continue;
1185
1186 for (unsigned storage_samples = 2;
1187 storage_samples <= depth_samples; storage_samples++) {
1188 if (screen->is_format_supported(screen,
1189 PIPE_FORMAT_R8G8B8A8_UNORM,
1190 PIPE_TEXTURE_2D,
1191 samples,
1192 storage_samples,
1193 PIPE_BIND_RENDER_TARGET)) {
1194 unsigned i = consts->NumSupportedMultisampleModes;
1195
1196 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1197 consts->SupportedMultisampleModes[i].NumColorSamples =
1198 samples;
1199 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1200 storage_samples;
1201 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1202 depth_samples;
1203 consts->NumSupportedMultisampleModes++;
1204 }
1205 }
1206 }
1207 }
1208 }
1209 }
1210
1211 if (consts->MaxSamples >= 2) {
1212 /* Real MSAA support */
1213 extensions->EXT_framebuffer_multisample = GL_TRUE;
1214 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1215 }
1216 else if (consts->MaxSamples > 0 &&
1217 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1218 /* fake MSAA support */
1219 consts->FakeSWMSAA = GL_TRUE;
1220 extensions->EXT_framebuffer_multisample = GL_TRUE;
1221 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1222 extensions->ARB_texture_multisample = GL_TRUE;
1223 }
1224
1225 if (consts->MaxDualSourceDrawBuffers > 0 &&
1226 !options->disable_blend_func_extended)
1227 extensions->ARB_blend_func_extended = GL_TRUE;
1228
1229 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1230 extensions->ARB_timer_query) {
1231 extensions->EXT_timer_query = GL_TRUE;
1232 }
1233
1234 if (extensions->ARB_transform_feedback2 &&
1235 extensions->ARB_draw_instanced) {
1236 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1237 }
1238 if (options->force_glsl_extensions_warn)
1239 consts->ForceGLSLExtensionsWarn = 1;
1240
1241 if (options->disable_glsl_line_continuations)
1242 consts->DisableGLSLLineContinuations = 1;
1243
1244 if (options->allow_glsl_extension_directive_midshader)
1245 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1246
1247 if (options->allow_glsl_builtin_const_expression)
1248 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1249
1250 if (options->allow_glsl_relaxed_es)
1251 consts->AllowGLSLRelaxedES = GL_TRUE;
1252
1253 consts->MinMapBufferAlignment =
1254 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1255
1256 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1257 if (api == API_OPENGL_COMPAT &&
1258 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1259 extensions->ARB_texture_buffer_object = GL_FALSE;
1260
1261 if (extensions->ARB_texture_buffer_object) {
1262 consts->MaxTextureBufferSize =
1263 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1264 (1u << 31) - 1);
1265 consts->TextureBufferOffsetAlignment =
1266 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1267
1268 if (consts->TextureBufferOffsetAlignment)
1269 extensions->ARB_texture_buffer_range = GL_TRUE;
1270
1271 init_format_extensions(screen, extensions, tbo_rgb32,
1272 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1273 PIPE_BIND_SAMPLER_VIEW);
1274 }
1275
1276 extensions->OES_texture_buffer =
1277 extensions->ARB_texture_buffer_object &&
1278 extensions->ARB_texture_buffer_range &&
1279 extensions->ARB_texture_buffer_object_rgb32 &&
1280 extensions->ARB_shader_image_load_store;
1281
1282 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1283 * If the number of available texture indirections is very limited, then we
1284 * prefer to disable varying packing rather than run the risk of varying
1285 * packing preventing a shader from running.
1286 */
1287 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1288 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1289 /* We can't disable varying packing if transform feedback is available,
1290 * because transform feedback code assumes a packed varying layout.
1291 */
1292 if (!extensions->EXT_transform_feedback)
1293 consts->DisableVaryingPacking = GL_TRUE;
1294 }
1295
1296 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1297 if (consts->MaxViewports >= 16) {
1298 if (GLSLVersion >= 400) {
1299 consts->ViewportBounds.Min = -32768.0;
1300 consts->ViewportBounds.Max = 32767.0;
1301 } else {
1302 consts->ViewportBounds.Min = -16384.0;
1303 consts->ViewportBounds.Max = 16383.0;
1304 }
1305 extensions->ARB_viewport_array = GL_TRUE;
1306 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1307 if (extensions->AMD_vertex_shader_layer)
1308 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1309 }
1310
1311 if (extensions->AMD_vertex_shader_layer &&
1312 extensions->AMD_vertex_shader_viewport_index &&
1313 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1314 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1315
1316 /* ARB_framebuffer_no_attachments */
1317 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1318 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1319 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1320 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1321 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1322
1323 /* GL_ARB_ES3_compatibility.
1324 * Check requirements for GLSL ES 3.00.
1325 */
1326 if (GLSLVersion >= 130 &&
1327 extensions->ARB_uniform_buffer_object &&
1328 extensions->ARB_shader_bit_encoding &&
1329 extensions->NV_primitive_restart &&
1330 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1331 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1332 /* Requirements for ETC2 emulation. */
1333 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1334 PIPE_TEXTURE_2D, 0, 0,
1335 PIPE_BIND_SAMPLER_VIEW) &&
1336 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1337 PIPE_TEXTURE_2D, 0, 0,
1338 PIPE_BIND_SAMPLER_VIEW) &&
1339 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1340 PIPE_TEXTURE_2D, 0, 0,
1341 PIPE_BIND_SAMPLER_VIEW) &&
1342 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1343 PIPE_TEXTURE_2D, 0, 0,
1344 PIPE_BIND_SAMPLER_VIEW) &&
1345 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1346 PIPE_TEXTURE_2D, 0, 0,
1347 PIPE_BIND_SAMPLER_VIEW) &&
1348 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1349 PIPE_TEXTURE_2D, 0, 0,
1350 PIPE_BIND_SAMPLER_VIEW)) {
1351 extensions->ARB_ES3_compatibility = GL_TRUE;
1352 }
1353
1354 #ifdef HAVE_ST_VDPAU
1355 if (screen->get_video_param &&
1356 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1357 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1358 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1359 extensions->NV_vdpau_interop = GL_TRUE;
1360 }
1361 #endif
1362
1363 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1364 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1365 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1366 }
1367
1368 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1369 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1370 extensions->GREMEDY_string_marker = GL_TRUE;
1371
1372 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1373 int compute_supported_irs =
1374 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1375 PIPE_SHADER_CAP_SUPPORTED_IRS);
1376 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1377 uint64_t grid_size[3], block_size[3];
1378 uint64_t max_local_size, max_threads_per_block;
1379
1380 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1381 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1382 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1383 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1384 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1385 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1386 &max_threads_per_block);
1387 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1388 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1389 &max_local_size);
1390
1391 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1392 consts->MaxComputeSharedMemorySize = max_local_size;
1393
1394 for (i = 0; i < 3; i++) {
1395 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1396 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1397 }
1398
1399 extensions->ARB_compute_shader =
1400 extensions->ARB_shader_image_load_store &&
1401 extensions->ARB_shader_atomic_counters;
1402
1403 if (extensions->ARB_compute_shader) {
1404 uint64_t max_variable_threads_per_block = 0;
1405
1406 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1407 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1408 &max_variable_threads_per_block);
1409
1410 for (i = 0; i < 3; i++) {
1411 /* Clamp the values to avoid having a local work group size
1412 * greater than the maximum number of invocations.
1413 */
1414 consts->MaxComputeVariableGroupSize[i] =
1415 MIN2(consts->MaxComputeWorkGroupSize[i],
1416 max_variable_threads_per_block);
1417 }
1418 consts->MaxComputeVariableGroupInvocations =
1419 max_variable_threads_per_block;
1420
1421 extensions->ARB_compute_variable_group_size =
1422 max_variable_threads_per_block > 0;
1423 }
1424 }
1425 }
1426
1427 if (extensions->EXT_texture_filter_anisotropic &&
1428 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1429 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1430
1431 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1432
1433 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1434 * there's no clean way of telling whether we would support ES 3.1 from
1435 * here, so copy the condition from compute_version_es2 here. A lot of
1436 * these are redunant, but simpler to just have a (near-)exact copy here.
1437 */
1438 extensions->ARB_ES3_1_compatibility =
1439 extensions->ARB_ES3_compatibility &&
1440 extensions->ARB_arrays_of_arrays &&
1441 extensions->ARB_compute_shader &&
1442 extensions->ARB_draw_indirect &&
1443 extensions->ARB_explicit_uniform_location &&
1444 extensions->ARB_framebuffer_no_attachments &&
1445 extensions->ARB_shader_atomic_counters &&
1446 extensions->ARB_shader_image_load_store &&
1447 extensions->ARB_shader_image_size &&
1448 extensions->ARB_shader_storage_buffer_object &&
1449 extensions->ARB_shading_language_packing &&
1450 extensions->ARB_stencil_texturing &&
1451 extensions->ARB_texture_multisample &&
1452 extensions->ARB_gpu_shader5 &&
1453 extensions->EXT_shader_integer_mix;
1454
1455 extensions->OES_texture_cube_map_array =
1456 extensions->ARB_ES3_1_compatibility &&
1457 extensions->OES_geometry_shader &&
1458 extensions->ARB_texture_cube_map_array;
1459
1460 extensions->OES_viewport_array =
1461 extensions->ARB_ES3_1_compatibility &&
1462 extensions->OES_geometry_shader &&
1463 extensions->ARB_viewport_array;
1464
1465 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1466 consts->NoPrimitiveBoundingBoxOutput = true;
1467
1468 extensions->ANDROID_extension_pack_es31a =
1469 extensions->KHR_texture_compression_astc_ldr &&
1470 extensions->KHR_blend_equation_advanced &&
1471 extensions->OES_sample_variables &&
1472 extensions->ARB_shader_image_load_store &&
1473 extensions->ARB_texture_stencil8 &&
1474 extensions->ARB_texture_multisample &&
1475 extensions->OES_copy_image &&
1476 extensions->ARB_draw_buffers_blend &&
1477 extensions->OES_geometry_shader &&
1478 extensions->ARB_gpu_shader5 &&
1479 extensions->OES_primitive_bounding_box &&
1480 extensions->ARB_tessellation_shader &&
1481 extensions->ARB_texture_border_clamp &&
1482 extensions->OES_texture_buffer &&
1483 extensions->OES_texture_cube_map_array &&
1484 extensions->EXT_texture_sRGB_decode;
1485
1486 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1487 * before overall versions are selected. Also it's actually a subset of ES
1488 * 3.2, since it doesn't require ASTC or advanced blending.
1489 */
1490 extensions->ARB_ES3_2_compatibility =
1491 extensions->ARB_ES3_1_compatibility &&
1492 extensions->KHR_robustness &&
1493 extensions->ARB_copy_image &&
1494 extensions->ARB_draw_buffers_blend &&
1495 extensions->ARB_draw_elements_base_vertex &&
1496 extensions->OES_geometry_shader &&
1497 extensions->ARB_gpu_shader5 &&
1498 extensions->ARB_sample_shading &&
1499 extensions->ARB_tessellation_shader &&
1500 extensions->ARB_texture_border_clamp &&
1501 extensions->OES_texture_buffer &&
1502 extensions->ARB_texture_cube_map_array &&
1503 extensions->ARB_texture_stencil8 &&
1504 extensions->ARB_texture_multisample;
1505
1506 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1507 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1508 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1509 float max_dilate;
1510 bool pre_snap_triangles, pre_snap_points_lines;
1511
1512 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1513
1514 pre_snap_triangles =
1515 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1516 pre_snap_points_lines =
1517 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1518
1519 extensions->NV_conservative_raster =
1520 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1521
1522 if (extensions->NV_conservative_raster) {
1523 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1524 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1525 extensions->NV_conservative_raster_pre_snap =
1526 pre_snap_triangles && pre_snap_points_lines;
1527 }
1528 }
1529 }