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st/mesa: expose GL_OES_texture_view
[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 bool can_ubo = true;
85 int temp;
86
87 c->MaxTextureLevels
88 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
89 MAX_TEXTURE_LEVELS);
90
91 c->Max3DTextureLevels
92 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
93 MAX_3D_TEXTURE_LEVELS);
94
95 c->MaxCubeTextureLevels
96 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
97 MAX_CUBE_TEXTURE_LEVELS);
98
99 c->MaxTextureRectSize
100 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
101
102 c->MaxArrayTextureLayers
103 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
104
105 /* Define max viewport size and max renderbuffer size in terms of
106 * max texture size (note: max tex RECT size = max tex 2D size).
107 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
108 */
109 c->MaxViewportWidth =
110 c->MaxViewportHeight =
111 c->MaxRenderbufferSize = c->MaxTextureRectSize;
112
113 c->SubPixelBits =
114 screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
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 pc->MaxShaderStorageBlocks =
245 screen->get_shader_param(screen, sh,
246 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
247
248 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
249 if (temp) {
250 /*
251 * for separate atomic counters get the actual hw limits
252 * per stage on atomic counters and buffers
253 */
254 pc->MaxAtomicCounters = temp;
255 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
256 } else {
257 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
258 /*
259 * without separate atomic counters, reserve half of the available
260 * SSBOs for atomic buffers, and the other half for normal SSBOs.
261 */
262 pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
263 pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
264 }
265 pc->MaxImageUniforms = screen->get_shader_param(
266 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
267
268 /* Gallium doesn't really care about local vs. env parameters so use the
269 * same limits.
270 */
271 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
272 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
273
274 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
275 pc->LowInt.RangeMin = 31;
276 pc->LowInt.RangeMax = 30;
277 pc->LowInt.Precision = 0;
278 pc->MediumInt = pc->HighInt = pc->LowInt;
279 }
280
281 /* TODO: make these more fine-grained if anyone needs it */
282 options->MaxIfDepth =
283 screen->get_shader_param(screen, sh,
284 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
285 options->EmitNoLoops =
286 !screen->get_shader_param(screen, sh,
287 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
288 options->EmitNoMainReturn =
289 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
290
291 options->EmitNoCont =
292 !screen->get_shader_param(screen, sh,
293 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
294
295 options->EmitNoIndirectInput =
296 !screen->get_shader_param(screen, sh,
297 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
298 options->EmitNoIndirectOutput =
299 !screen->get_shader_param(screen, sh,
300 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
301 options->EmitNoIndirectTemp =
302 !screen->get_shader_param(screen, sh,
303 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
304 options->EmitNoIndirectUniform =
305 !screen->get_shader_param(screen, sh,
306 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
307
308 if (pc->MaxNativeInstructions &&
309 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
310 can_ubo = false;
311 }
312
313 if (options->EmitNoLoops)
314 options->MaxUnrollIterations =
315 MIN2(screen->get_shader_param(screen, sh,
316 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
317 65536);
318 else
319 options->MaxUnrollIterations =
320 screen->get_shader_param(screen, sh,
321 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
322
323 options->LowerCombinedClipCullDistance = true;
324 options->LowerBufferInterfaceBlocks = true;
325 }
326
327 c->MaxUserAssignableUniformLocations =
328 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
329 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
330 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
331 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
332 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
333
334 c->GLSLOptimizeConservatively =
335 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
336 c->LowerTessLevel = true;
337 c->LowerCsDerivedVariables = true;
338 c->PrimitiveRestartForPatches =
339 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
340
341 c->MaxCombinedTextureImageUnits =
342 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
343 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
344 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
345 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
346 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
347 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
348 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
349
350 /* This depends on program constants. */
351 c->MaxTextureCoordUnits
352 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
353 MAX_TEXTURE_COORD_UNITS);
354
355 c->MaxTextureUnits =
356 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
357 c->MaxTextureCoordUnits);
358
359 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
360 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
361
362 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
363 * of inputs. It's always 2 colors + N generic inputs. */
364 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
365 PIPE_SHADER_CAP_MAX_INPUTS);
366 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
367 c->MaxGeometryOutputVertices =
368 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
369 c->MaxGeometryTotalOutputComponents =
370 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
371 c->MaxGeometryShaderInvocations =
372 screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
373 c->MaxTessPatchComponents =
374 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
375 MAX_VARYING) * 4;
376
377 c->MinProgramTexelOffset =
378 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
379 c->MaxProgramTexelOffset =
380 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
381
382 c->MaxProgramTextureGatherComponents =
383 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
384 c->MinProgramTextureGatherOffset =
385 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
386 c->MaxProgramTextureGatherOffset =
387 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
388
389 c->MaxTransformFeedbackBuffers =
390 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
391 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
392 MAX_FEEDBACK_BUFFERS);
393 c->MaxTransformFeedbackSeparateComponents =
394 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
395 c->MaxTransformFeedbackInterleavedComponents =
396 screen->get_param(screen,
397 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
398 c->MaxVertexStreams =
399 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
400
401 /* The vertex stream must fit into pipe_stream_output_info::stream */
402 assert(c->MaxVertexStreams <= 4);
403
404 c->MaxVertexAttribStride
405 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
406
407 /* The value cannot be larger than that since pipe_vertex_buffer::src_offset
408 * is only 16 bits.
409 */
410 temp = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET);
411 c->MaxVertexAttribRelativeOffset = MIN2(0xffff, temp);
412
413 c->StripTextureBorder = GL_TRUE;
414
415 c->GLSLSkipStrictMaxUniformLimitCheck =
416 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
417
418 c->UniformBufferOffsetAlignment =
419 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
420
421 if (can_ubo) {
422 extensions->ARB_uniform_buffer_object = GL_TRUE;
423 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
424 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
425 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
426 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
427 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
428 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
429 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
430 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
431 }
432
433 c->GLSLFragCoordIsSysVal =
434 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
435 c->GLSLFrontFacingIsSysVal =
436 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
437
438 /* GL_ARB_get_program_binary
439 *
440 * The QT framework has a bug in their shader program cache, which is built
441 * on GL_ARB_get_program_binary. In an effort to allow them to fix the bug
442 * we don't enable more than 1 binary format for compatibility profiles.
443 */
444 if (api != API_OPENGL_COMPAT &&
445 screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
446 c->NumProgramBinaryFormats = 1;
447
448 c->MaxAtomicBufferBindings =
449 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
450 c->MaxAtomicBufferSize =
451 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
452
453 c->MaxCombinedAtomicBuffers =
454 MIN2(screen->get_param(screen,
455 PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
456 MAX_COMBINED_ATOMIC_BUFFERS);
457 if (!c->MaxCombinedAtomicBuffers) {
458 c->MaxCombinedAtomicBuffers =
459 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
460 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
461 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
462 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
463 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
464 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
465 }
466
467 c->MaxCombinedAtomicCounters =
468 screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
469 if (!c->MaxCombinedAtomicCounters)
470 c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
471
472 if (c->MaxCombinedAtomicBuffers > 0) {
473 extensions->ARB_shader_atomic_counters = GL_TRUE;
474 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
475 }
476
477 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
478 c->ShaderStorageBufferOffsetAlignment =
479 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
480 if (c->ShaderStorageBufferOffsetAlignment) {
481 c->MaxCombinedShaderStorageBlocks =
482 MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
483 MAX_COMBINED_SHADER_STORAGE_BUFFERS);
484 if (!c->MaxCombinedShaderStorageBlocks) {
485 c->MaxCombinedShaderStorageBlocks =
486 c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
487 c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
488 c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
489 c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
490 c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
491 assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
492 }
493 c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;
494
495 c->MaxCombinedShaderOutputResources +=
496 c->MaxCombinedShaderStorageBlocks;
497 c->MaxShaderStorageBlockSize =
498 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
499 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
500 }
501
502 c->MaxCombinedImageUniforms =
503 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
504 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
505 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
506 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
507 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
508 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
509 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
510 c->MaxImageUnits = MAX_IMAGE_UNITS;
511 if (c->MaxCombinedImageUniforms) {
512 extensions->ARB_shader_image_load_store = GL_TRUE;
513 extensions->ARB_shader_image_size = GL_TRUE;
514 }
515
516 /* ARB_framebuffer_no_attachments */
517 c->MaxFramebufferWidth = c->MaxViewportWidth;
518 c->MaxFramebufferHeight = c->MaxViewportHeight;
519 /* NOTE: we cheat here a little by assuming that
520 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
521 * number of layers as we need, although we technically
522 * could have more the generality is not really useful
523 * in practicality.
524 */
525 c->MaxFramebufferLayers =
526 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
527
528 c->MaxWindowRectangles =
529 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
530
531 c->SparseBufferPageSize =
532 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
533
534 c->AllowMappedBuffersDuringExecution =
535 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
536
537 c->UseSTD430AsDefaultPacking =
538 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
539
540 c->MaxSubpixelPrecisionBiasBits =
541 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
542
543 c->ConservativeRasterDilateRange[0] =
544 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
545 c->ConservativeRasterDilateRange[1] =
546 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
547 c->ConservativeRasterDilateGranularity =
548 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
549
550 /* limit the max combined shader output resources to a driver limit */
551 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
552 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
553 c->MaxCombinedShaderOutputResources = temp;
554 }
555
556
557 /**
558 * Given a member \c x of struct gl_extensions, return offset of
559 * \c x in bytes.
560 */
561 #define o(x) offsetof(struct gl_extensions, x)
562
563
564 struct st_extension_cap_mapping {
565 int extension_offset;
566 int cap;
567 };
568
569 struct st_extension_format_mapping {
570 int extension_offset[2];
571 enum pipe_format format[32];
572
573 /* If TRUE, at least one format must be supported for the extensions to be
574 * advertised. If FALSE, all the formats must be supported. */
575 GLboolean need_at_least_one;
576 };
577
578 /**
579 * Enable extensions if certain pipe formats are supported by the driver.
580 * What extensions will be enabled and what formats must be supported is
581 * described by the array of st_extension_format_mapping.
582 *
583 * target and bind_flags are passed to is_format_supported.
584 */
585 static void
586 init_format_extensions(struct pipe_screen *screen,
587 struct gl_extensions *extensions,
588 const struct st_extension_format_mapping *mapping,
589 unsigned num_mappings,
590 enum pipe_texture_target target,
591 unsigned bind_flags)
592 {
593 GLboolean *extension_table = (GLboolean *) extensions;
594 unsigned i;
595 int j;
596 int num_formats = ARRAY_SIZE(mapping->format);
597 int num_ext = ARRAY_SIZE(mapping->extension_offset);
598
599 for (i = 0; i < num_mappings; i++) {
600 int num_supported = 0;
601
602 /* Examine each format in the list. */
603 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
604 if (screen->is_format_supported(screen, mapping[i].format[j],
605 target, 0, 0, bind_flags)) {
606 num_supported++;
607 }
608 }
609
610 if (!num_supported ||
611 (!mapping[i].need_at_least_one && num_supported != j)) {
612 continue;
613 }
614
615 /* Enable all extensions in the list. */
616 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
617 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
618 }
619 }
620
621
622 /**
623 * Given a list of formats and bind flags, return the maximum number
624 * of samples supported by any of those formats.
625 */
626 static unsigned
627 get_max_samples_for_formats(struct pipe_screen *screen,
628 unsigned num_formats,
629 const enum pipe_format *formats,
630 unsigned max_samples,
631 unsigned bind)
632 {
633 unsigned i, f;
634
635 for (i = max_samples; i > 0; --i) {
636 for (f = 0; f < num_formats; f++) {
637 if (screen->is_format_supported(screen, formats[f],
638 PIPE_TEXTURE_2D, i, i, bind)) {
639 return i;
640 }
641 }
642 }
643 return 0;
644 }
645
646 static unsigned
647 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
648 unsigned num_formats,
649 const enum pipe_format *formats,
650 unsigned max_samples,
651 unsigned num_storage_samples,
652 unsigned bind)
653 {
654 unsigned i, f;
655
656 for (i = max_samples; i > 0; --i) {
657 for (f = 0; f < num_formats; f++) {
658 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
659 i, num_storage_samples, bind)) {
660 return i;
661 }
662 }
663 }
664 return 0;
665 }
666
667 /**
668 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
669 * which GL extensions are supported.
670 * Quite a few extensions are always supported because they are standard
671 * features or can be built on top of other gallium features.
672 * Some fine tuning may still be needed.
673 */
674 void st_init_extensions(struct pipe_screen *screen,
675 struct gl_constants *consts,
676 struct gl_extensions *extensions,
677 struct st_config_options *options,
678 gl_api api)
679 {
680 unsigned i;
681 GLboolean *extension_table = (GLboolean *) extensions;
682
683 static const struct st_extension_cap_mapping cap_mapping[] = {
684 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
685 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
686 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
687 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
688 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
689 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
690 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
691 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
692 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
693 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
694 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
695 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
696 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
697 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
698 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
699 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
700 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
701 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
702 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
703 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
704 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
705 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
706 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
707 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
708 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
709 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
710 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
711 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
712 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
713 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
714 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
715 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
716 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
717 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
718 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
719 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
720 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
721 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
722 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
723 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
724 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
725 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
726 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
727 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
728 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
729 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
730 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
731 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
732 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
733 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
734
735 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
736
737 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
738 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
739 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
740 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
741 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
742 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
743 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
744 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
745 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
746 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
747 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
748 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
749 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
750 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
751
752 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
753 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
754 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
755 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
756 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
757 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
758 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
759 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
760 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
761 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
762 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
763 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
764 /* GL_NV_point_sprite is not supported by gallium because we don't
765 * support the GL_POINT_SPRITE_R_MODE_NV option. */
766
767 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
768 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
769 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
770 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
771 };
772
773 /* Required: render target and sampler support */
774 static const struct st_extension_format_mapping rendertarget_mapping[] = {
775 { { o(OES_texture_float) },
776 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
777
778 { { o(OES_texture_half_float) },
779 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
780
781 { { o(ARB_texture_rgb10_a2ui) },
782 { PIPE_FORMAT_R10G10B10A2_UINT,
783 PIPE_FORMAT_B10G10R10A2_UINT },
784 GL_TRUE }, /* at least one format must be supported */
785
786 { { o(EXT_framebuffer_sRGB) },
787 { PIPE_FORMAT_A8B8G8R8_SRGB,
788 PIPE_FORMAT_B8G8R8A8_SRGB,
789 PIPE_FORMAT_R8G8B8A8_SRGB },
790 GL_TRUE }, /* at least one format must be supported */
791
792 { { o(EXT_packed_float) },
793 { PIPE_FORMAT_R11G11B10_FLOAT } },
794
795 { { o(EXT_texture_integer) },
796 { PIPE_FORMAT_R32G32B32A32_UINT,
797 PIPE_FORMAT_R32G32B32A32_SINT } },
798
799 { { o(ARB_texture_rg) },
800 { PIPE_FORMAT_R8_UNORM,
801 PIPE_FORMAT_R8G8_UNORM } },
802 };
803
804 /* Required: depth stencil and sampler support */
805 static const struct st_extension_format_mapping depthstencil_mapping[] = {
806 { { o(ARB_depth_buffer_float) },
807 { PIPE_FORMAT_Z32_FLOAT,
808 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
809 };
810
811 /* Required: sampler support */
812 static const struct st_extension_format_mapping texture_mapping[] = {
813 { { o(ARB_texture_compression_rgtc) },
814 { PIPE_FORMAT_RGTC1_UNORM,
815 PIPE_FORMAT_RGTC1_SNORM,
816 PIPE_FORMAT_RGTC2_UNORM,
817 PIPE_FORMAT_RGTC2_SNORM } },
818
819 { { o(EXT_texture_compression_latc) },
820 { PIPE_FORMAT_LATC1_UNORM,
821 PIPE_FORMAT_LATC1_SNORM,
822 PIPE_FORMAT_LATC2_UNORM,
823 PIPE_FORMAT_LATC2_SNORM } },
824
825 { { o(EXT_texture_compression_s3tc),
826 o(ANGLE_texture_compression_dxt) },
827 { PIPE_FORMAT_DXT1_RGB,
828 PIPE_FORMAT_DXT1_RGBA,
829 PIPE_FORMAT_DXT3_RGBA,
830 PIPE_FORMAT_DXT5_RGBA } },
831
832 { { o(ARB_texture_compression_bptc) },
833 { PIPE_FORMAT_BPTC_RGBA_UNORM,
834 PIPE_FORMAT_BPTC_SRGBA,
835 PIPE_FORMAT_BPTC_RGB_FLOAT,
836 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
837
838 { { o(KHR_texture_compression_astc_ldr),
839 o(KHR_texture_compression_astc_sliced_3d) },
840 { PIPE_FORMAT_ASTC_4x4,
841 PIPE_FORMAT_ASTC_5x4,
842 PIPE_FORMAT_ASTC_5x5,
843 PIPE_FORMAT_ASTC_6x5,
844 PIPE_FORMAT_ASTC_6x6,
845 PIPE_FORMAT_ASTC_8x5,
846 PIPE_FORMAT_ASTC_8x6,
847 PIPE_FORMAT_ASTC_8x8,
848 PIPE_FORMAT_ASTC_10x5,
849 PIPE_FORMAT_ASTC_10x6,
850 PIPE_FORMAT_ASTC_10x8,
851 PIPE_FORMAT_ASTC_10x10,
852 PIPE_FORMAT_ASTC_12x10,
853 PIPE_FORMAT_ASTC_12x12,
854 PIPE_FORMAT_ASTC_4x4_SRGB,
855 PIPE_FORMAT_ASTC_5x4_SRGB,
856 PIPE_FORMAT_ASTC_5x5_SRGB,
857 PIPE_FORMAT_ASTC_6x5_SRGB,
858 PIPE_FORMAT_ASTC_6x6_SRGB,
859 PIPE_FORMAT_ASTC_8x5_SRGB,
860 PIPE_FORMAT_ASTC_8x6_SRGB,
861 PIPE_FORMAT_ASTC_8x8_SRGB,
862 PIPE_FORMAT_ASTC_10x5_SRGB,
863 PIPE_FORMAT_ASTC_10x6_SRGB,
864 PIPE_FORMAT_ASTC_10x8_SRGB,
865 PIPE_FORMAT_ASTC_10x10_SRGB,
866 PIPE_FORMAT_ASTC_12x10_SRGB,
867 PIPE_FORMAT_ASTC_12x12_SRGB } },
868
869 /* ASTC software fallback support. */
870 { { o(KHR_texture_compression_astc_ldr),
871 o(KHR_texture_compression_astc_sliced_3d) },
872 { PIPE_FORMAT_R8G8B8A8_UNORM,
873 PIPE_FORMAT_R8G8B8A8_SRGB } },
874
875 { { o(EXT_texture_shared_exponent) },
876 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
877
878 { { o(EXT_texture_snorm) },
879 { PIPE_FORMAT_R8G8B8A8_SNORM } },
880
881 { { o(EXT_texture_sRGB),
882 o(EXT_texture_sRGB_decode) },
883 { PIPE_FORMAT_A8B8G8R8_SRGB,
884 PIPE_FORMAT_B8G8R8A8_SRGB,
885 PIPE_FORMAT_A8R8G8B8_SRGB,
886 PIPE_FORMAT_R8G8B8A8_SRGB},
887 GL_TRUE }, /* at least one format must be supported */
888
889 { { o(EXT_texture_sRGB_R8) },
890 { PIPE_FORMAT_R8_SRGB },
891 GL_TRUE },
892
893 { { o(EXT_texture_type_2_10_10_10_REV) },
894 { PIPE_FORMAT_R10G10B10A2_UNORM,
895 PIPE_FORMAT_B10G10R10A2_UNORM },
896 GL_TRUE }, /* at least one format must be supported */
897
898 { { o(ATI_texture_compression_3dc) },
899 { PIPE_FORMAT_LATC2_UNORM } },
900
901 { { o(MESA_ycbcr_texture) },
902 { PIPE_FORMAT_UYVY,
903 PIPE_FORMAT_YUYV },
904 GL_TRUE }, /* at least one format must be supported */
905
906 { { o(OES_compressed_ETC1_RGB8_texture) },
907 { PIPE_FORMAT_ETC1_RGB8,
908 PIPE_FORMAT_R8G8B8A8_UNORM },
909 GL_TRUE }, /* at least one format must be supported */
910
911 { { o(ARB_stencil_texturing),
912 o(ARB_texture_stencil8) },
913 { PIPE_FORMAT_X24S8_UINT,
914 PIPE_FORMAT_S8X24_UINT },
915 GL_TRUE }, /* at least one format must be supported */
916 };
917
918 /* Required: vertex fetch support. */
919 static const struct st_extension_format_mapping vertex_mapping[] = {
920 { { o(EXT_vertex_array_bgra) },
921 { PIPE_FORMAT_B8G8R8A8_UNORM } },
922 { { o(ARB_vertex_type_2_10_10_10_rev) },
923 { PIPE_FORMAT_R10G10B10A2_UNORM,
924 PIPE_FORMAT_B10G10R10A2_UNORM,
925 PIPE_FORMAT_R10G10B10A2_SNORM,
926 PIPE_FORMAT_B10G10R10A2_SNORM,
927 PIPE_FORMAT_R10G10B10A2_USCALED,
928 PIPE_FORMAT_B10G10R10A2_USCALED,
929 PIPE_FORMAT_R10G10B10A2_SSCALED,
930 PIPE_FORMAT_B10G10R10A2_SSCALED } },
931 { { o(ARB_vertex_type_10f_11f_11f_rev) },
932 { PIPE_FORMAT_R11G11B10_FLOAT } },
933 };
934
935 static const struct st_extension_format_mapping tbo_rgb32[] = {
936 { {o(ARB_texture_buffer_object_rgb32) },
937 { PIPE_FORMAT_R32G32B32_FLOAT,
938 PIPE_FORMAT_R32G32B32_UINT,
939 PIPE_FORMAT_R32G32B32_SINT,
940 } },
941 };
942
943 /*
944 * Extensions that are supported by all Gallium drivers:
945 */
946 extensions->ARB_ES2_compatibility = GL_TRUE;
947 extensions->ARB_depth_texture = GL_TRUE;
948 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
949 extensions->ARB_explicit_attrib_location = GL_TRUE;
950 extensions->ARB_explicit_uniform_location = GL_TRUE;
951 extensions->ARB_fragment_coord_conventions = GL_TRUE;
952 extensions->ARB_fragment_program = GL_TRUE;
953 extensions->ARB_fragment_program_shadow = GL_TRUE;
954 extensions->ARB_fragment_shader = GL_TRUE;
955 extensions->ARB_half_float_vertex = GL_TRUE;
956 extensions->ARB_internalformat_query = GL_TRUE;
957 extensions->ARB_internalformat_query2 = GL_TRUE;
958 extensions->ARB_map_buffer_range = GL_TRUE;
959 extensions->ARB_shadow = GL_TRUE;
960 extensions->ARB_sync = GL_TRUE;
961 extensions->ARB_texture_border_clamp = GL_TRUE;
962 extensions->ARB_texture_cube_map = GL_TRUE;
963 extensions->ARB_texture_env_combine = GL_TRUE;
964 extensions->ARB_texture_env_crossbar = GL_TRUE;
965 extensions->ARB_texture_env_dot3 = GL_TRUE;
966 extensions->ARB_vertex_program = GL_TRUE;
967 extensions->ARB_vertex_shader = GL_TRUE;
968
969 extensions->EXT_blend_color = GL_TRUE;
970 extensions->EXT_blend_func_separate = GL_TRUE;
971 extensions->EXT_blend_minmax = GL_TRUE;
972 extensions->EXT_gpu_program_parameters = GL_TRUE;
973 extensions->EXT_pixel_buffer_object = GL_TRUE;
974 extensions->EXT_point_parameters = GL_TRUE;
975 extensions->EXT_provoking_vertex = GL_TRUE;
976 extensions->EXT_stencil_two_side = GL_TRUE;
977 extensions->EXT_texture_env_dot3 = GL_TRUE;
978
979 extensions->ATI_fragment_shader = GL_TRUE;
980 extensions->ATI_texture_env_combine3 = GL_TRUE;
981
982 extensions->MESA_pack_invert = GL_TRUE;
983
984 extensions->NV_fog_distance = GL_TRUE;
985 extensions->NV_texture_env_combine4 = GL_TRUE;
986 extensions->NV_texture_rectangle = GL_TRUE;
987
988 extensions->OES_EGL_image = GL_TRUE;
989 extensions->OES_EGL_image_external = GL_TRUE;
990 extensions->OES_draw_texture = GL_TRUE;
991
992 /* Expose the extensions which directly correspond to gallium caps. */
993 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
994 if (screen->get_param(screen, cap_mapping[i].cap)) {
995 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
996 }
997 }
998
999 /* Expose the extensions which directly correspond to gallium formats. */
1000 init_format_extensions(screen, extensions, rendertarget_mapping,
1001 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1002 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1003 init_format_extensions(screen, extensions, depthstencil_mapping,
1004 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1005 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1006 init_format_extensions(screen, extensions, texture_mapping,
1007 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1008 PIPE_BIND_SAMPLER_VIEW);
1009 init_format_extensions(screen, extensions, vertex_mapping,
1010 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1011 PIPE_BIND_VERTEX_BUFFER);
1012
1013 /* Figure out GLSL support and set GLSLVersion to it. */
1014 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1015 consts->GLSLVersionCompat =
1016 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1017
1018 const unsigned GLSLVersion =
1019 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1020 consts->GLSLVersion;
1021
1022 _mesa_override_glsl_version(consts);
1023
1024 if (options->force_glsl_version > 0 &&
1025 options->force_glsl_version <= GLSLVersion) {
1026 consts->ForceGLSLVersion = options->force_glsl_version;
1027 }
1028
1029 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1030
1031 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1032
1033 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1034
1035 consts->dri_config_options_sha1 = options->config_options_sha1;
1036
1037 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1038
1039 if (GLSLVersion >= 400)
1040 extensions->ARB_gpu_shader5 = GL_TRUE;
1041 if (GLSLVersion >= 410)
1042 extensions->ARB_shader_precision = GL_TRUE;
1043
1044 /* This extension needs full OpenGL 3.2, but we don't know if that's
1045 * supported at this point. Only check the GLSL version. */
1046 if (GLSLVersion >= 150 &&
1047 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1048 extensions->AMD_vertex_shader_layer = GL_TRUE;
1049 }
1050
1051 if (GLSLVersion >= 140) {
1052 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1053 extensions->ARB_enhanced_layouts = GL_TRUE;
1054 }
1055
1056 if (GLSLVersion >= 130) {
1057 consts->NativeIntegers = GL_TRUE;
1058 consts->MaxClipPlanes = 8;
1059
1060 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1061 consts->VertexID_is_zero_based = GL_TRUE;
1062 }
1063
1064 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1065 extensions->ARB_conservative_depth = GL_TRUE;
1066 extensions->ARB_shading_language_packing = GL_TRUE;
1067 extensions->OES_depth_texture_cube_map = GL_TRUE;
1068 extensions->ARB_shading_language_420pack = GL_TRUE;
1069 extensions->ARB_texture_query_levels = GL_TRUE;
1070
1071 extensions->ARB_shader_bit_encoding = GL_TRUE;
1072
1073 extensions->EXT_shader_integer_mix = GL_TRUE;
1074 extensions->ARB_arrays_of_arrays = GL_TRUE;
1075 extensions->MESA_shader_integer_functions = GL_TRUE;
1076 } else {
1077 /* Optional integer support for GLSL 1.2. */
1078 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1079 PIPE_SHADER_CAP_INTEGERS) &&
1080 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1081 PIPE_SHADER_CAP_INTEGERS)) {
1082 consts->NativeIntegers = GL_TRUE;
1083
1084 extensions->EXT_shader_integer_mix = GL_TRUE;
1085 }
1086
1087 /* Integer textures make no sense before GLSL 1.30 */
1088 extensions->EXT_texture_integer = GL_FALSE;
1089 }
1090
1091 consts->GLSLZeroInit = options->glsl_zero_init;
1092
1093 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1094
1095 /* Below are the cases which cannot be moved into tables easily. */
1096
1097 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1098 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1099 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1100 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1101 extensions->ARB_tessellation_shader = GL_TRUE;
1102 }
1103
1104 /* What this is really checking for is the ability to support multiple
1105 * invocations of a geometry shader. There is no separate cap for that, so
1106 * we check the GLSLVersion.
1107 */
1108 if (GLSLVersion >= 400 &&
1109 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1110 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1111 extensions->OES_geometry_shader = GL_TRUE;
1112 }
1113
1114 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1115 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1116 */
1117 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1118 extensions->ARB_gpu_shader5;
1119
1120 /* Maximum sample count. */
1121 {
1122 static const enum pipe_format color_formats[] = {
1123 PIPE_FORMAT_R8G8B8A8_UNORM,
1124 PIPE_FORMAT_B8G8R8A8_UNORM,
1125 PIPE_FORMAT_A8R8G8B8_UNORM,
1126 PIPE_FORMAT_A8B8G8R8_UNORM,
1127 };
1128 static const enum pipe_format depth_formats[] = {
1129 PIPE_FORMAT_Z16_UNORM,
1130 PIPE_FORMAT_Z24X8_UNORM,
1131 PIPE_FORMAT_X8Z24_UNORM,
1132 PIPE_FORMAT_Z32_UNORM,
1133 PIPE_FORMAT_Z32_FLOAT
1134 };
1135 static const enum pipe_format int_formats[] = {
1136 PIPE_FORMAT_R8G8B8A8_SINT
1137 };
1138 static const enum pipe_format void_formats[] = {
1139 PIPE_FORMAT_NONE
1140 };
1141
1142 consts->MaxSamples =
1143 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1144 color_formats, 16,
1145 PIPE_BIND_RENDER_TARGET);
1146
1147 consts->MaxImageSamples =
1148 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1149 color_formats, 16,
1150 PIPE_BIND_SHADER_IMAGE);
1151
1152 consts->MaxColorTextureSamples =
1153 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1154 color_formats, consts->MaxSamples,
1155 PIPE_BIND_SAMPLER_VIEW);
1156
1157 consts->MaxDepthTextureSamples =
1158 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1159 depth_formats, consts->MaxSamples,
1160 PIPE_BIND_SAMPLER_VIEW);
1161
1162 consts->MaxIntegerSamples =
1163 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1164 int_formats, consts->MaxSamples,
1165 PIPE_BIND_SAMPLER_VIEW);
1166
1167 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1168 consts->MaxFramebufferSamples =
1169 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1170 void_formats, 32,
1171 PIPE_BIND_RENDER_TARGET);
1172
1173 if (extensions->AMD_framebuffer_multisample_advanced) {
1174 /* AMD_framebuffer_multisample_advanced */
1175 /* This can be greater than storage samples. */
1176 consts->MaxColorFramebufferSamples =
1177 get_max_samples_for_formats_advanced(screen,
1178 ARRAY_SIZE(color_formats),
1179 color_formats, 16,
1180 consts->MaxSamples,
1181 PIPE_BIND_RENDER_TARGET);
1182
1183 /* If the driver supports N color samples, it means it supports
1184 * N samples and N storage samples. N samples >= N storage
1185 * samples.
1186 */
1187 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1188 consts->MaxDepthStencilFramebufferSamples =
1189 consts->MaxDepthTextureSamples;
1190
1191 assert(consts->MaxColorFramebufferSamples >=
1192 consts->MaxDepthStencilFramebufferSamples);
1193 assert(consts->MaxDepthStencilFramebufferSamples >=
1194 consts->MaxColorFramebufferStorageSamples);
1195
1196 consts->NumSupportedMultisampleModes = 0;
1197
1198 unsigned depth_samples_supported = 0;
1199
1200 for (unsigned samples = 2;
1201 samples <= consts->MaxDepthStencilFramebufferSamples;
1202 samples++) {
1203 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1204 PIPE_TEXTURE_2D, samples, samples,
1205 PIPE_BIND_DEPTH_STENCIL))
1206 depth_samples_supported |= 1 << samples;
1207 }
1208
1209 for (unsigned samples = 2;
1210 samples <= consts->MaxColorFramebufferSamples;
1211 samples++) {
1212 for (unsigned depth_samples = 2;
1213 depth_samples <= samples; depth_samples++) {
1214 if (!(depth_samples_supported & (1 << depth_samples)))
1215 continue;
1216
1217 for (unsigned storage_samples = 2;
1218 storage_samples <= depth_samples; storage_samples++) {
1219 if (screen->is_format_supported(screen,
1220 PIPE_FORMAT_R8G8B8A8_UNORM,
1221 PIPE_TEXTURE_2D,
1222 samples,
1223 storage_samples,
1224 PIPE_BIND_RENDER_TARGET)) {
1225 unsigned i = consts->NumSupportedMultisampleModes;
1226
1227 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1228 consts->SupportedMultisampleModes[i].NumColorSamples =
1229 samples;
1230 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1231 storage_samples;
1232 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1233 depth_samples;
1234 consts->NumSupportedMultisampleModes++;
1235 }
1236 }
1237 }
1238 }
1239 }
1240 }
1241
1242 if (consts->MaxSamples >= 2) {
1243 /* Real MSAA support */
1244 extensions->EXT_framebuffer_multisample = GL_TRUE;
1245 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1246 }
1247 else if (consts->MaxSamples > 0 &&
1248 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1249 /* fake MSAA support */
1250 consts->FakeSWMSAA = GL_TRUE;
1251 extensions->EXT_framebuffer_multisample = GL_TRUE;
1252 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1253 extensions->ARB_texture_multisample = GL_TRUE;
1254 }
1255
1256 if (consts->MaxDualSourceDrawBuffers > 0 &&
1257 !options->disable_blend_func_extended)
1258 extensions->ARB_blend_func_extended = GL_TRUE;
1259
1260 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1261 extensions->ARB_timer_query) {
1262 extensions->EXT_timer_query = GL_TRUE;
1263 }
1264
1265 if (extensions->ARB_transform_feedback2 &&
1266 extensions->ARB_draw_instanced) {
1267 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1268 }
1269 if (options->force_glsl_extensions_warn)
1270 consts->ForceGLSLExtensionsWarn = 1;
1271
1272 if (options->disable_glsl_line_continuations)
1273 consts->DisableGLSLLineContinuations = 1;
1274
1275 if (options->allow_glsl_extension_directive_midshader)
1276 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1277
1278 if (options->allow_glsl_builtin_const_expression)
1279 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1280
1281 if (options->allow_glsl_relaxed_es)
1282 consts->AllowGLSLRelaxedES = GL_TRUE;
1283
1284 if (options->allow_glsl_layout_qualifier_on_function_parameters)
1285 consts->AllowLayoutQualifiersOnFunctionParameters = GL_TRUE;
1286
1287 consts->MinMapBufferAlignment =
1288 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1289
1290 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1291 if (api == API_OPENGL_COMPAT &&
1292 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1293 extensions->ARB_texture_buffer_object = GL_FALSE;
1294
1295 if (extensions->ARB_texture_buffer_object) {
1296 consts->MaxTextureBufferSize =
1297 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1298 (1u << 31) - 1);
1299 consts->TextureBufferOffsetAlignment =
1300 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1301
1302 if (consts->TextureBufferOffsetAlignment)
1303 extensions->ARB_texture_buffer_range = GL_TRUE;
1304
1305 init_format_extensions(screen, extensions, tbo_rgb32,
1306 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1307 PIPE_BIND_SAMPLER_VIEW);
1308 }
1309
1310 extensions->OES_texture_buffer =
1311 extensions->ARB_texture_buffer_object &&
1312 extensions->ARB_texture_buffer_range &&
1313 extensions->ARB_texture_buffer_object_rgb32 &&
1314 extensions->ARB_shader_image_load_store;
1315
1316 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1317 * If the number of available texture indirections is very limited, then we
1318 * prefer to disable varying packing rather than run the risk of varying
1319 * packing preventing a shader from running.
1320 */
1321 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1322 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1323 /* We can't disable varying packing if transform feedback is available,
1324 * because transform feedback code assumes a packed varying layout.
1325 */
1326 if (!extensions->EXT_transform_feedback)
1327 consts->DisableVaryingPacking = GL_TRUE;
1328 }
1329
1330 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1331 if (consts->MaxViewports >= 16) {
1332 if (GLSLVersion >= 400) {
1333 consts->ViewportBounds.Min = -32768.0;
1334 consts->ViewportBounds.Max = 32767.0;
1335 } else {
1336 consts->ViewportBounds.Min = -16384.0;
1337 consts->ViewportBounds.Max = 16383.0;
1338 }
1339 extensions->ARB_viewport_array = GL_TRUE;
1340 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1341 if (extensions->AMD_vertex_shader_layer)
1342 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1343 }
1344
1345 if (extensions->AMD_vertex_shader_layer &&
1346 extensions->AMD_vertex_shader_viewport_index &&
1347 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1348 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1349
1350 /* ARB_framebuffer_no_attachments */
1351 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1352 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1353 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1354 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1355 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1356
1357 /* GL_ARB_ES3_compatibility.
1358 * Check requirements for GLSL ES 3.00.
1359 */
1360 if (GLSLVersion >= 130 &&
1361 extensions->ARB_uniform_buffer_object &&
1362 extensions->ARB_shader_bit_encoding &&
1363 extensions->NV_primitive_restart &&
1364 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1365 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1366 /* Requirements for ETC2 emulation. */
1367 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1368 PIPE_TEXTURE_2D, 0, 0,
1369 PIPE_BIND_SAMPLER_VIEW) &&
1370 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1371 PIPE_TEXTURE_2D, 0, 0,
1372 PIPE_BIND_SAMPLER_VIEW) &&
1373 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1374 PIPE_TEXTURE_2D, 0, 0,
1375 PIPE_BIND_SAMPLER_VIEW) &&
1376 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1377 PIPE_TEXTURE_2D, 0, 0,
1378 PIPE_BIND_SAMPLER_VIEW) &&
1379 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1380 PIPE_TEXTURE_2D, 0, 0,
1381 PIPE_BIND_SAMPLER_VIEW) &&
1382 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1383 PIPE_TEXTURE_2D, 0, 0,
1384 PIPE_BIND_SAMPLER_VIEW)) {
1385 extensions->ARB_ES3_compatibility = GL_TRUE;
1386 }
1387
1388 #ifdef HAVE_ST_VDPAU
1389 if (screen->get_video_param &&
1390 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1391 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1392 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1393 extensions->NV_vdpau_interop = GL_TRUE;
1394 }
1395 #endif
1396
1397 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1398 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1399 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1400 }
1401
1402 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1403 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1404 extensions->GREMEDY_string_marker = GL_TRUE;
1405
1406 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1407 int compute_supported_irs =
1408 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1409 PIPE_SHADER_CAP_SUPPORTED_IRS);
1410 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1411 uint64_t grid_size[3], block_size[3];
1412 uint64_t max_local_size, max_threads_per_block;
1413
1414 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1415 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1416 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1417 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1418 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1419 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1420 &max_threads_per_block);
1421 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1422 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1423 &max_local_size);
1424
1425 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1426 consts->MaxComputeSharedMemorySize = max_local_size;
1427
1428 for (i = 0; i < 3; i++) {
1429 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1430 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1431 }
1432
1433 extensions->ARB_compute_shader =
1434 extensions->ARB_shader_image_load_store &&
1435 extensions->ARB_shader_atomic_counters;
1436
1437 if (extensions->ARB_compute_shader) {
1438 uint64_t max_variable_threads_per_block = 0;
1439
1440 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1441 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1442 &max_variable_threads_per_block);
1443
1444 for (i = 0; i < 3; i++) {
1445 /* Clamp the values to avoid having a local work group size
1446 * greater than the maximum number of invocations.
1447 */
1448 consts->MaxComputeVariableGroupSize[i] =
1449 MIN2(consts->MaxComputeWorkGroupSize[i],
1450 max_variable_threads_per_block);
1451 }
1452 consts->MaxComputeVariableGroupInvocations =
1453 max_variable_threads_per_block;
1454
1455 extensions->ARB_compute_variable_group_size =
1456 max_variable_threads_per_block > 0;
1457 }
1458 }
1459 }
1460
1461 extensions->ARB_texture_float =
1462 extensions->OES_texture_half_float &&
1463 extensions->OES_texture_float;
1464
1465 if (extensions->EXT_texture_filter_anisotropic &&
1466 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1467 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1468
1469 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1470
1471 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1472 * there's no clean way of telling whether we would support ES 3.1 from
1473 * here, so copy the condition from compute_version_es2 here. A lot of
1474 * these are redunant, but simpler to just have a (near-)exact copy here.
1475 */
1476 extensions->ARB_ES3_1_compatibility =
1477 extensions->ARB_ES3_compatibility &&
1478 extensions->ARB_arrays_of_arrays &&
1479 extensions->ARB_compute_shader &&
1480 extensions->ARB_draw_indirect &&
1481 extensions->ARB_explicit_uniform_location &&
1482 extensions->ARB_framebuffer_no_attachments &&
1483 extensions->ARB_shader_atomic_counters &&
1484 extensions->ARB_shader_image_load_store &&
1485 extensions->ARB_shader_image_size &&
1486 extensions->ARB_shader_storage_buffer_object &&
1487 extensions->ARB_shading_language_packing &&
1488 extensions->ARB_stencil_texturing &&
1489 extensions->ARB_texture_multisample &&
1490 extensions->ARB_gpu_shader5 &&
1491 extensions->EXT_shader_integer_mix;
1492
1493 extensions->OES_texture_cube_map_array =
1494 extensions->ARB_ES3_1_compatibility &&
1495 extensions->OES_geometry_shader &&
1496 extensions->ARB_texture_cube_map_array;
1497
1498 extensions->OES_viewport_array =
1499 extensions->ARB_ES3_1_compatibility &&
1500 extensions->OES_geometry_shader &&
1501 extensions->ARB_viewport_array;
1502
1503 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1504 consts->NoPrimitiveBoundingBoxOutput = true;
1505
1506 extensions->ANDROID_extension_pack_es31a =
1507 extensions->KHR_texture_compression_astc_ldr &&
1508 extensions->KHR_blend_equation_advanced &&
1509 extensions->OES_sample_variables &&
1510 extensions->ARB_shader_image_load_store &&
1511 extensions->ARB_texture_stencil8 &&
1512 extensions->ARB_texture_multisample &&
1513 extensions->OES_copy_image &&
1514 extensions->ARB_draw_buffers_blend &&
1515 extensions->OES_geometry_shader &&
1516 extensions->ARB_gpu_shader5 &&
1517 extensions->OES_primitive_bounding_box &&
1518 extensions->ARB_tessellation_shader &&
1519 extensions->ARB_texture_border_clamp &&
1520 extensions->OES_texture_buffer &&
1521 extensions->OES_texture_cube_map_array &&
1522 extensions->EXT_texture_sRGB_decode;
1523
1524 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1525 * before overall versions are selected. Also it's actually a subset of ES
1526 * 3.2, since it doesn't require ASTC or advanced blending.
1527 */
1528 extensions->ARB_ES3_2_compatibility =
1529 extensions->ARB_ES3_1_compatibility &&
1530 extensions->KHR_robustness &&
1531 extensions->ARB_copy_image &&
1532 extensions->ARB_draw_buffers_blend &&
1533 extensions->ARB_draw_elements_base_vertex &&
1534 extensions->OES_geometry_shader &&
1535 extensions->ARB_gpu_shader5 &&
1536 extensions->ARB_sample_shading &&
1537 extensions->ARB_tessellation_shader &&
1538 extensions->ARB_texture_border_clamp &&
1539 extensions->OES_texture_buffer &&
1540 extensions->ARB_texture_cube_map_array &&
1541 extensions->ARB_texture_stencil8 &&
1542 extensions->ARB_texture_multisample;
1543
1544 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1545 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1546 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1547 float max_dilate;
1548 bool pre_snap_triangles, pre_snap_points_lines;
1549
1550 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1551
1552 pre_snap_triangles =
1553 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1554 pre_snap_points_lines =
1555 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1556
1557 extensions->NV_conservative_raster =
1558 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1559
1560 if (extensions->NV_conservative_raster) {
1561 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1562 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1563 extensions->NV_conservative_raster_pre_snap =
1564 pre_snap_triangles && pre_snap_points_lines;
1565 }
1566 }
1567 }