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[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
32 #include "main/context.h"
33 #include "main/macros.h"
34 #include "main/spirv_extensions.h"
35 #include "main/version.h"
36
37 #include "pipe/p_context.h"
38 #include "pipe/p_defines.h"
39 #include "pipe/p_screen.h"
40 #include "tgsi/tgsi_from_mesa.h"
41 #include "util/u_math.h"
42 #include "util/u_memory.h"
43
44 #include "st_context.h"
45 #include "st_debug.h"
46 #include "st_extensions.h"
47 #include "st_format.h"
48
49
50 /*
51 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
52 * avoid evaluating arguments (which are often function calls) more than once.
53 */
54
55 static unsigned _min(unsigned a, unsigned b)
56 {
57 return (a < b) ? a : b;
58 }
59
60 static float _maxf(float a, float b)
61 {
62 return (a > b) ? a : b;
63 }
64
65 static int _clamp(int a, int min, int max)
66 {
67 if (a < min)
68 return min;
69 else if (a > max)
70 return max;
71 else
72 return a;
73 }
74
75
76 /**
77 * Query driver to get implementation limits.
78 * Note that we have to limit/clamp against Mesa's internal limits too.
79 */
80 void st_init_limits(struct pipe_screen *screen,
81 struct gl_constants *c, struct gl_extensions *extensions)
82 {
83 int supported_irs;
84 unsigned sh;
85 bool can_ubo = true;
86 int temp;
87
88 c->MaxTextureSize = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
89 c->MaxTextureSize = MIN2(c->MaxTextureSize, 1 << (MAX_TEXTURE_LEVELS - 1));
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 = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
100
101 c->MaxArrayTextureLayers
102 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
103
104 /* Define max viewport size and max renderbuffer size in terms of
105 * max texture size (note: max tex RECT size = max tex 2D size).
106 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
107 */
108 c->MaxViewportWidth =
109 c->MaxViewportHeight =
110 c->MaxRenderbufferSize = c->MaxTextureRectSize;
111
112 c->SubPixelBits =
113 screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
114 c->ViewportSubpixelBits =
115 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
116
117 c->MaxDrawBuffers = c->MaxColorAttachments =
118 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
119 1, MAX_DRAW_BUFFERS);
120
121 c->MaxDualSourceDrawBuffers =
122 _clamp(screen->get_param(screen,
123 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
124 0, MAX_DRAW_BUFFERS);
125
126 c->MaxLineWidth =
127 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
128 c->MaxLineWidthAA =
129 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
130
131 c->MaxPointSize =
132 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
133 c->MaxPointSizeAA =
134 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
135
136 c->MinPointSize = 1.0f;
137 c->MinPointSizeAA = 1.0f;
138
139 c->MaxTextureMaxAnisotropy =
140 _maxf(2.0f,
141 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
142
143 c->MaxTextureLodBias =
144 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
145
146 c->QuadsFollowProvokingVertexConvention =
147 screen->get_param(screen,
148 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
149
150 c->MaxUniformBlockSize =
151 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
152 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
153 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
154 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
155 */
156 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
157
158 if (c->MaxUniformBlockSize < 16384) {
159 can_ubo = false;
160 }
161
162 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
163 struct gl_shader_compiler_options *options;
164 struct gl_program_constants *pc;
165 const nir_shader_compiler_options *nir_options = NULL;
166
167 bool prefer_nir = PIPE_SHADER_IR_NIR ==
168 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);
169
170 if (screen->get_compiler_options && prefer_nir) {
171 nir_options = (const nir_shader_compiler_options *)
172 screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
173 }
174
175 const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
176 pc = &c->Program[stage];
177 options = &c->ShaderCompilerOptions[stage];
178 c->ShaderCompilerOptions[stage].NirOptions = nir_options;
179
180 if (sh == PIPE_SHADER_COMPUTE) {
181 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
182 continue;
183 supported_irs =
184 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
185 if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
186 (1 << PIPE_SHADER_IR_NIR))))
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 /* For ARB programs, prog_src_register::Index is a signed 13-bit number.
226 * This gives us a limit of 4096 values - but we may need to generate
227 * internal values in addition to what the source program uses. So, we
228 * drop the limit one step lower, to 2048, to be safe.
229 */
230 pc->MaxParameters =
231 pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
232 pc->MaxInputComponents =
233 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
234 pc->MaxOutputComponents =
235 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
236
237
238 pc->MaxUniformBlocks =
239 screen->get_shader_param(screen, sh,
240 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
241 if (pc->MaxUniformBlocks)
242 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
243 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
244
245 pc->MaxCombinedUniformComponents =
246 pc->MaxUniformComponents +
247 (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
248
249 pc->MaxShaderStorageBlocks =
250 screen->get_shader_param(screen, sh,
251 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
252
253 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
254 if (temp) {
255 /*
256 * for separate atomic counters get the actual hw limits
257 * per stage on atomic counters and buffers
258 */
259 pc->MaxAtomicCounters = temp;
260 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
261 } else if (pc->MaxShaderStorageBlocks) {
262 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
263 /*
264 * without separate atomic counters, reserve half of the available
265 * SSBOs for atomic buffers, and the other half for normal SSBOs.
266 */
267 pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
268 pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
269 }
270 pc->MaxImageUniforms = screen->get_shader_param(
271 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
272
273 /* Gallium doesn't really care about local vs. env parameters so use the
274 * same limits.
275 */
276 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
277 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
278
279 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
280 pc->LowInt.RangeMin = 31;
281 pc->LowInt.RangeMax = 30;
282 pc->LowInt.Precision = 0;
283 pc->MediumInt = pc->HighInt = pc->LowInt;
284 }
285
286 /* TODO: make these more fine-grained if anyone needs it */
287 options->MaxIfDepth =
288 screen->get_shader_param(screen, sh,
289 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
290 options->EmitNoLoops =
291 !screen->get_shader_param(screen, sh,
292 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
293 options->EmitNoMainReturn =
294 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
295
296 options->EmitNoCont =
297 !screen->get_shader_param(screen, sh,
298 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
299
300 options->EmitNoIndirectInput =
301 !screen->get_shader_param(screen, sh,
302 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
303 options->EmitNoIndirectOutput =
304 !screen->get_shader_param(screen, sh,
305 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
306 options->EmitNoIndirectTemp =
307 !screen->get_shader_param(screen, sh,
308 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
309 options->EmitNoIndirectUniform =
310 !screen->get_shader_param(screen, sh,
311 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
312
313 if (pc->MaxNativeInstructions &&
314 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
315 can_ubo = false;
316 }
317
318 if (options->EmitNoLoops)
319 options->MaxUnrollIterations =
320 MIN2(screen->get_shader_param(screen, sh,
321 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
322 65536);
323 else
324 options->MaxUnrollIterations =
325 screen->get_shader_param(screen, sh,
326 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
327
328 if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
329 options->LowerCombinedClipCullDistance = true;
330
331 /* NIR can do the lowering on our behalf and we'll get better results
332 * because it can actually optimize SSBO access.
333 */
334 options->LowerBufferInterfaceBlocks = !prefer_nir;
335
336 if (sh == MESA_SHADER_VERTEX) {
337 if (screen->get_param(screen, PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED))
338 options->LowerBuiltinVariablesXfb |= VARYING_BIT_POS;
339 if (screen->get_param(screen, PIPE_CAP_PSIZ_CLAMPED))
340 options->LowerBuiltinVariablesXfb |= VARYING_BIT_PSIZ;
341 }
342
343 /* Initialize lower precision shader compiler option based on
344 * the value of PIPE_SHADER_CAP_FP16.
345 */
346 options->LowerPrecision =
347 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_FP16);
348 }
349
350 c->MaxUserAssignableUniformLocations =
351 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
352 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
353 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
354 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
355 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
356
357 c->GLSLOptimizeConservatively =
358 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
359 c->GLSLLowerConstArrays =
360 screen->get_param(screen, PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF);
361 c->GLSLTessLevelsAsInputs =
362 screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
363 c->LowerTessLevel =
364 !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
365 c->LowerCsDerivedVariables =
366 !screen->get_param(screen, PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED);
367 c->PrimitiveRestartForPatches =
368 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
369
370 c->MaxCombinedTextureImageUnits =
371 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
372 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
373 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
374 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
375 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
376 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
377 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
378
379 /* This depends on program constants. */
380 c->MaxTextureCoordUnits
381 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
382 MAX_TEXTURE_COORD_UNITS);
383
384 c->MaxTextureUnits =
385 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
386 c->MaxTextureCoordUnits);
387
388 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
389 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
390
391 c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
392 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
393 c->MaxGeometryOutputVertices =
394 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
395 c->MaxGeometryTotalOutputComponents =
396 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
397 c->MaxGeometryShaderInvocations =
398 screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
399 c->MaxTessPatchComponents =
400 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
401 MAX_VARYING) * 4;
402
403 c->MinProgramTexelOffset =
404 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
405 c->MaxProgramTexelOffset =
406 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
407
408 c->MaxProgramTextureGatherComponents =
409 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
410 c->MinProgramTextureGatherOffset =
411 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
412 c->MaxProgramTextureGatherOffset =
413 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
414
415 c->MaxTransformFeedbackBuffers =
416 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
417 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
418 MAX_FEEDBACK_BUFFERS);
419 c->MaxTransformFeedbackSeparateComponents =
420 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
421 c->MaxTransformFeedbackInterleavedComponents =
422 screen->get_param(screen,
423 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
424 c->MaxVertexStreams =
425 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
426
427 /* The vertex stream must fit into pipe_stream_output_info::stream */
428 assert(c->MaxVertexStreams <= 4);
429
430 c->MaxVertexAttribStride
431 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
432
433 /* The value cannot be larger than that since pipe_vertex_buffer::src_offset
434 * is only 16 bits.
435 */
436 temp = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET);
437 c->MaxVertexAttribRelativeOffset = MIN2(0xffff, temp);
438
439 c->StripTextureBorder = GL_TRUE;
440
441 c->GLSLSkipStrictMaxUniformLimitCheck =
442 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
443
444 c->UniformBufferOffsetAlignment =
445 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
446
447 if (can_ubo) {
448 extensions->ARB_uniform_buffer_object = GL_TRUE;
449 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
450 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
451 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
452 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
453 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
454 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
455 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
456 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
457 }
458
459 c->GLSLFragCoordIsSysVal =
460 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
461 c->GLSLPointCoordIsSysVal =
462 screen->get_param(screen, PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL);
463 c->GLSLFrontFacingIsSysVal =
464 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
465
466 /* GL_ARB_get_program_binary */
467 if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
468 c->NumProgramBinaryFormats = 1;
469
470 c->MaxAtomicBufferBindings =
471 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
472 c->MaxAtomicBufferSize =
473 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
474
475 c->MaxCombinedAtomicBuffers =
476 MIN2(screen->get_param(screen,
477 PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
478 MAX_COMBINED_ATOMIC_BUFFERS);
479 if (!c->MaxCombinedAtomicBuffers) {
480 c->MaxCombinedAtomicBuffers =
481 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
482 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
483 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
484 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
485 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
486 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
487 }
488
489 c->MaxCombinedAtomicCounters =
490 screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
491 if (!c->MaxCombinedAtomicCounters)
492 c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
493
494 if (c->MaxCombinedAtomicBuffers > 0) {
495 extensions->ARB_shader_atomic_counters = GL_TRUE;
496 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
497 }
498
499 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
500 c->ShaderStorageBufferOffsetAlignment =
501 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
502 if (c->ShaderStorageBufferOffsetAlignment) {
503 c->MaxCombinedShaderStorageBlocks =
504 MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
505 MAX_COMBINED_SHADER_STORAGE_BUFFERS);
506 if (!c->MaxCombinedShaderStorageBlocks) {
507 c->MaxCombinedShaderStorageBlocks =
508 c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
509 c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
510 c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
511 c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
512 c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
513 assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
514 }
515 c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;
516
517 c->MaxCombinedShaderOutputResources +=
518 c->MaxCombinedShaderStorageBlocks;
519 c->MaxShaderStorageBlockSize =
520 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
521 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
522 }
523
524 c->MaxCombinedImageUniforms =
525 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
526 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
527 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
528 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
529 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
530 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
531 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
532 c->MaxImageUnits = MAX_IMAGE_UNITS;
533 if (c->MaxCombinedImageUniforms) {
534 extensions->ARB_shader_image_load_store = GL_TRUE;
535 extensions->ARB_shader_image_size = GL_TRUE;
536 }
537
538 /* ARB_framebuffer_no_attachments */
539 c->MaxFramebufferWidth = c->MaxViewportWidth;
540 c->MaxFramebufferHeight = c->MaxViewportHeight;
541 /* NOTE: we cheat here a little by assuming that
542 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
543 * number of layers as we need, although we technically
544 * could have more the generality is not really useful
545 * in practicality.
546 */
547 c->MaxFramebufferLayers =
548 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
549
550 c->MaxWindowRectangles =
551 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
552
553 c->SparseBufferPageSize =
554 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
555
556 c->AllowMappedBuffersDuringExecution =
557 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
558
559 c->BufferCreateMapUnsynchronizedThreadSafe =
560 screen->get_param(screen, PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE);
561
562 c->UseSTD430AsDefaultPacking =
563 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
564
565 c->MaxSubpixelPrecisionBiasBits =
566 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
567
568 c->ConservativeRasterDilateRange[0] =
569 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
570 c->ConservativeRasterDilateRange[1] =
571 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
572 c->ConservativeRasterDilateGranularity =
573 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
574
575 /* limit the max combined shader output resources to a driver limit */
576 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
577 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
578 c->MaxCombinedShaderOutputResources = temp;
579
580 c->VertexBufferOffsetIsInt32 =
581 screen->get_param(screen, PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET);
582
583 c->MultiDrawWithUserIndices =
584 screen->get_param(screen, PIPE_CAP_DRAW_INFO_START_WITH_USER_INDICES);
585
586 c->AllowDynamicVAOFastPath = true;
587
588 c->glBeginEndBufferSize =
589 screen->get_param(screen, PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE);
590 }
591
592
593 /**
594 * Given a member \c x of struct gl_extensions, return offset of
595 * \c x in bytes.
596 */
597 #define o(x) offsetof(struct gl_extensions, x)
598
599
600 struct st_extension_cap_mapping {
601 int extension_offset;
602 int cap;
603 };
604
605 struct st_extension_format_mapping {
606 int extension_offset[2];
607 enum pipe_format format[32];
608
609 /* If TRUE, at least one format must be supported for the extensions to be
610 * advertised. If FALSE, all the formats must be supported. */
611 GLboolean need_at_least_one;
612 };
613
614 /**
615 * Enable extensions if certain pipe formats are supported by the driver.
616 * What extensions will be enabled and what formats must be supported is
617 * described by the array of st_extension_format_mapping.
618 *
619 * target and bind_flags are passed to is_format_supported.
620 */
621 static void
622 init_format_extensions(struct pipe_screen *screen,
623 struct gl_extensions *extensions,
624 const struct st_extension_format_mapping *mapping,
625 unsigned num_mappings,
626 enum pipe_texture_target target,
627 unsigned bind_flags)
628 {
629 GLboolean *extension_table = (GLboolean *) extensions;
630 unsigned i;
631 int j;
632 int num_formats = ARRAY_SIZE(mapping->format);
633 int num_ext = ARRAY_SIZE(mapping->extension_offset);
634
635 for (i = 0; i < num_mappings; i++) {
636 int num_supported = 0;
637
638 /* Examine each format in the list. */
639 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
640 if (screen->is_format_supported(screen, mapping[i].format[j],
641 target, 0, 0, bind_flags)) {
642 num_supported++;
643 }
644 }
645
646 if (!num_supported ||
647 (!mapping[i].need_at_least_one && num_supported != j)) {
648 continue;
649 }
650
651 /* Enable all extensions in the list. */
652 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
653 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
654 }
655 }
656
657
658 /**
659 * Given a list of formats and bind flags, return the maximum number
660 * of samples supported by any of those formats.
661 */
662 static unsigned
663 get_max_samples_for_formats(struct pipe_screen *screen,
664 unsigned num_formats,
665 const enum pipe_format *formats,
666 unsigned max_samples,
667 unsigned bind)
668 {
669 unsigned i, f;
670
671 for (i = max_samples; i > 0; --i) {
672 for (f = 0; f < num_formats; f++) {
673 if (screen->is_format_supported(screen, formats[f],
674 PIPE_TEXTURE_2D, i, i, bind)) {
675 return i;
676 }
677 }
678 }
679 return 0;
680 }
681
682 static unsigned
683 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
684 unsigned num_formats,
685 const enum pipe_format *formats,
686 unsigned max_samples,
687 unsigned num_storage_samples,
688 unsigned bind)
689 {
690 unsigned i, f;
691
692 for (i = max_samples; i > 0; --i) {
693 for (f = 0; f < num_formats; f++) {
694 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
695 i, num_storage_samples, bind)) {
696 return i;
697 }
698 }
699 }
700 return 0;
701 }
702
703 /**
704 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
705 * which GL extensions are supported.
706 * Quite a few extensions are always supported because they are standard
707 * features or can be built on top of other gallium features.
708 * Some fine tuning may still be needed.
709 */
710 void st_init_extensions(struct pipe_screen *screen,
711 struct gl_constants *consts,
712 struct gl_extensions *extensions,
713 struct st_config_options *options,
714 gl_api api)
715 {
716 unsigned i;
717 GLboolean *extension_table = (GLboolean *) extensions;
718
719 static const struct st_extension_cap_mapping cap_mapping[] = {
720 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
721 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
722 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
723 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
724 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
725 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
726 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
727 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
728 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
729 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
730 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
731 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
732 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
733 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
734 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
735 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
736 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
737 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
738 { o(ARB_gl_spirv), PIPE_CAP_GL_SPIRV },
739 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
740 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
741 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
742 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
743 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
744 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
745 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
746 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
747 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
748 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
749 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
750 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
751 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
752 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
753 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
754 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
755 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
756 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
757 { o(EXT_shader_image_load_formatted), PIPE_CAP_IMAGE_LOAD_FORMATTED },
758 { o(EXT_shader_image_load_store), PIPE_CAP_TGSI_ATOMINC_WRAP },
759 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
760 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
761 { o(ARB_shader_texture_lod), PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD },
762 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
763 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
764 { o(ARB_spirv_extensions), PIPE_CAP_GL_SPIRV },
765 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
766 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
767 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
768 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
769 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
770 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
771 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
772 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
773 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
774 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
775 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
776 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
777 { o(ARB_fragment_shader_interlock), PIPE_CAP_FRAGMENT_SHADER_INTERLOCK },
778
779 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
780 { o(EXT_demote_to_helper_invocation), PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION },
781 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
782 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
783 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
784 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
785 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
786 { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT },
787 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
788 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
789 { o(EXT_shader_samples_identical), PIPE_CAP_SHADER_SAMPLES_IDENTICAL },
790 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
791 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
792 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
793 { o(EXT_texture_shadow_lod), PIPE_CAP_TEXTURE_SHADOW_LOD },
794 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
795 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
796 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
797
798 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
799 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
800 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
801 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
802 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
803 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
804 { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
805 { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX },
806 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
807 { o(NV_alpha_to_coverage_dither_control), PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL },
808 { o(NV_compute_shader_derivatives), PIPE_CAP_COMPUTE_SHADER_DERIVATIVES },
809 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
810 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
811 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
812 { o(NV_shader_atomic_float), PIPE_CAP_TGSI_ATOMFADD },
813 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
814 { o(NV_viewport_array2), PIPE_CAP_VIEWPORT_MASK },
815 { o(NV_viewport_swizzle), PIPE_CAP_VIEWPORT_SWIZZLE },
816 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
817 /* GL_NV_point_sprite is not supported by gallium because we don't
818 * support the GL_POINT_SPRITE_R_MODE_NV option. */
819
820 { o(OES_standard_derivatives), PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES },
821 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
822 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
823 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
824 { o(INTEL_blackhole_render), PIPE_CAP_FRONTEND_NOOP, },
825 };
826
827 /* Required: render target and sampler support */
828 static const struct st_extension_format_mapping rendertarget_mapping[] = {
829 { { o(OES_texture_float) },
830 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
831
832 { { o(OES_texture_half_float) },
833 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
834
835 { { o(ARB_texture_rgb10_a2ui) },
836 { PIPE_FORMAT_R10G10B10A2_UINT,
837 PIPE_FORMAT_B10G10R10A2_UINT },
838 GL_TRUE }, /* at least one format must be supported */
839
840 { { o(EXT_sRGB) },
841 { PIPE_FORMAT_A8B8G8R8_SRGB,
842 PIPE_FORMAT_B8G8R8A8_SRGB,
843 PIPE_FORMAT_R8G8B8A8_SRGB },
844 GL_TRUE }, /* at least one format must be supported */
845
846 { { o(EXT_packed_float) },
847 { PIPE_FORMAT_R11G11B10_FLOAT } },
848
849 { { o(EXT_texture_integer) },
850 { PIPE_FORMAT_R32G32B32A32_UINT,
851 PIPE_FORMAT_R32G32B32A32_SINT } },
852
853 { { o(ARB_texture_rg) },
854 { PIPE_FORMAT_R8_UNORM,
855 PIPE_FORMAT_R8G8_UNORM } },
856
857 { { o(EXT_texture_norm16) },
858 { PIPE_FORMAT_R16_UNORM,
859 PIPE_FORMAT_R16G16_UNORM,
860 PIPE_FORMAT_R16G16B16A16_UNORM } },
861
862 { { o(EXT_render_snorm) },
863 { PIPE_FORMAT_R8_SNORM,
864 PIPE_FORMAT_R8G8_SNORM,
865 PIPE_FORMAT_R8G8B8A8_SNORM,
866 PIPE_FORMAT_R16_SNORM,
867 PIPE_FORMAT_R16G16_SNORM,
868 PIPE_FORMAT_R16G16B16A16_SNORM } },
869 };
870
871 /* Required: render target, sampler, and blending */
872 static const struct st_extension_format_mapping rt_blendable[] = {
873 { { o(EXT_float_blend) },
874 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
875 };
876
877 /* Required: depth stencil and sampler support */
878 static const struct st_extension_format_mapping depthstencil_mapping[] = {
879 { { o(ARB_depth_buffer_float) },
880 { PIPE_FORMAT_Z32_FLOAT,
881 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
882 };
883
884 /* Required: sampler support */
885 static const struct st_extension_format_mapping texture_mapping[] = {
886 { { o(ARB_texture_compression_rgtc) },
887 { PIPE_FORMAT_RGTC1_UNORM,
888 PIPE_FORMAT_RGTC1_SNORM,
889 PIPE_FORMAT_RGTC2_UNORM,
890 PIPE_FORMAT_RGTC2_SNORM } },
891
892 { { o(EXT_texture_compression_latc) },
893 { PIPE_FORMAT_LATC1_UNORM,
894 PIPE_FORMAT_LATC1_SNORM,
895 PIPE_FORMAT_LATC2_UNORM,
896 PIPE_FORMAT_LATC2_SNORM } },
897
898 { { o(EXT_texture_compression_s3tc),
899 o(ANGLE_texture_compression_dxt) },
900 { PIPE_FORMAT_DXT1_RGB,
901 PIPE_FORMAT_DXT1_RGBA,
902 PIPE_FORMAT_DXT3_RGBA,
903 PIPE_FORMAT_DXT5_RGBA } },
904
905 { { o(EXT_texture_compression_s3tc_srgb) },
906 { PIPE_FORMAT_DXT1_SRGB,
907 PIPE_FORMAT_DXT1_SRGBA,
908 PIPE_FORMAT_DXT3_SRGBA,
909 PIPE_FORMAT_DXT5_SRGBA } },
910
911 { { o(ARB_texture_compression_bptc) },
912 { PIPE_FORMAT_BPTC_RGBA_UNORM,
913 PIPE_FORMAT_BPTC_SRGBA,
914 PIPE_FORMAT_BPTC_RGB_FLOAT,
915 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
916
917 { { o(TDFX_texture_compression_FXT1) },
918 { PIPE_FORMAT_FXT1_RGB,
919 PIPE_FORMAT_FXT1_RGBA } },
920
921 { { o(KHR_texture_compression_astc_ldr),
922 o(KHR_texture_compression_astc_sliced_3d) },
923 { PIPE_FORMAT_ASTC_4x4,
924 PIPE_FORMAT_ASTC_5x4,
925 PIPE_FORMAT_ASTC_5x5,
926 PIPE_FORMAT_ASTC_6x5,
927 PIPE_FORMAT_ASTC_6x6,
928 PIPE_FORMAT_ASTC_8x5,
929 PIPE_FORMAT_ASTC_8x6,
930 PIPE_FORMAT_ASTC_8x8,
931 PIPE_FORMAT_ASTC_10x5,
932 PIPE_FORMAT_ASTC_10x6,
933 PIPE_FORMAT_ASTC_10x8,
934 PIPE_FORMAT_ASTC_10x10,
935 PIPE_FORMAT_ASTC_12x10,
936 PIPE_FORMAT_ASTC_12x12,
937 PIPE_FORMAT_ASTC_4x4_SRGB,
938 PIPE_FORMAT_ASTC_5x4_SRGB,
939 PIPE_FORMAT_ASTC_5x5_SRGB,
940 PIPE_FORMAT_ASTC_6x5_SRGB,
941 PIPE_FORMAT_ASTC_6x6_SRGB,
942 PIPE_FORMAT_ASTC_8x5_SRGB,
943 PIPE_FORMAT_ASTC_8x6_SRGB,
944 PIPE_FORMAT_ASTC_8x8_SRGB,
945 PIPE_FORMAT_ASTC_10x5_SRGB,
946 PIPE_FORMAT_ASTC_10x6_SRGB,
947 PIPE_FORMAT_ASTC_10x8_SRGB,
948 PIPE_FORMAT_ASTC_10x10_SRGB,
949 PIPE_FORMAT_ASTC_12x10_SRGB,
950 PIPE_FORMAT_ASTC_12x12_SRGB } },
951
952 /* ASTC software fallback support. */
953 { { o(KHR_texture_compression_astc_ldr),
954 o(KHR_texture_compression_astc_sliced_3d) },
955 { PIPE_FORMAT_R8G8B8A8_UNORM,
956 PIPE_FORMAT_R8G8B8A8_SRGB } },
957
958 { { o(EXT_texture_shared_exponent) },
959 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
960
961 { { o(EXT_texture_snorm) },
962 { PIPE_FORMAT_R8G8B8A8_SNORM } },
963
964 { { o(EXT_texture_sRGB),
965 o(EXT_texture_sRGB_decode) },
966 { PIPE_FORMAT_A8B8G8R8_SRGB,
967 PIPE_FORMAT_B8G8R8A8_SRGB,
968 PIPE_FORMAT_A8R8G8B8_SRGB,
969 PIPE_FORMAT_R8G8B8A8_SRGB},
970 GL_TRUE }, /* at least one format must be supported */
971
972 { { o(EXT_texture_sRGB_R8) },
973 { PIPE_FORMAT_R8_SRGB },
974 GL_TRUE },
975
976 { { o(EXT_texture_type_2_10_10_10_REV) },
977 { PIPE_FORMAT_R10G10B10A2_UNORM,
978 PIPE_FORMAT_B10G10R10A2_UNORM },
979 GL_TRUE }, /* at least one format must be supported */
980
981 { { o(ATI_texture_compression_3dc) },
982 { PIPE_FORMAT_LATC2_UNORM } },
983
984 { { o(MESA_ycbcr_texture) },
985 { PIPE_FORMAT_UYVY,
986 PIPE_FORMAT_YUYV },
987 GL_TRUE }, /* at least one format must be supported */
988
989 { { o(OES_compressed_ETC1_RGB8_texture) },
990 { PIPE_FORMAT_ETC1_RGB8,
991 PIPE_FORMAT_R8G8B8A8_UNORM },
992 GL_TRUE }, /* at least one format must be supported */
993
994 { { o(ARB_stencil_texturing),
995 o(ARB_texture_stencil8) },
996 { PIPE_FORMAT_X24S8_UINT,
997 PIPE_FORMAT_S8X24_UINT },
998 GL_TRUE }, /* at least one format must be supported */
999
1000 { { o(AMD_compressed_ATC_texture) },
1001 { PIPE_FORMAT_ATC_RGB,
1002 PIPE_FORMAT_ATC_RGBA_EXPLICIT,
1003 PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
1004 };
1005
1006 /* Required: vertex fetch support. */
1007 static const struct st_extension_format_mapping vertex_mapping[] = {
1008 { { o(EXT_vertex_array_bgra) },
1009 { PIPE_FORMAT_B8G8R8A8_UNORM } },
1010 { { o(ARB_vertex_type_2_10_10_10_rev) },
1011 { PIPE_FORMAT_R10G10B10A2_UNORM,
1012 PIPE_FORMAT_B10G10R10A2_UNORM,
1013 PIPE_FORMAT_R10G10B10A2_SNORM,
1014 PIPE_FORMAT_B10G10R10A2_SNORM,
1015 PIPE_FORMAT_R10G10B10A2_USCALED,
1016 PIPE_FORMAT_B10G10R10A2_USCALED,
1017 PIPE_FORMAT_R10G10B10A2_SSCALED,
1018 PIPE_FORMAT_B10G10R10A2_SSCALED } },
1019 { { o(ARB_vertex_type_10f_11f_11f_rev) },
1020 { PIPE_FORMAT_R11G11B10_FLOAT } },
1021 };
1022
1023 static const struct st_extension_format_mapping tbo_rgb32[] = {
1024 { {o(ARB_texture_buffer_object_rgb32) },
1025 { PIPE_FORMAT_R32G32B32_FLOAT,
1026 PIPE_FORMAT_R32G32B32_UINT,
1027 PIPE_FORMAT_R32G32B32_SINT,
1028 } },
1029 };
1030
1031 /*
1032 * Extensions that are supported by all Gallium drivers:
1033 */
1034 extensions->ARB_ES2_compatibility = GL_TRUE;
1035 extensions->ARB_depth_texture = GL_TRUE;
1036 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
1037 extensions->ARB_explicit_attrib_location = GL_TRUE;
1038 extensions->ARB_explicit_uniform_location = GL_TRUE;
1039 extensions->ARB_fragment_coord_conventions = GL_TRUE;
1040 extensions->ARB_fragment_program = GL_TRUE;
1041 extensions->ARB_fragment_shader = GL_TRUE;
1042 extensions->ARB_half_float_vertex = GL_TRUE;
1043 extensions->ARB_internalformat_query = GL_TRUE;
1044 extensions->ARB_internalformat_query2 = GL_TRUE;
1045 extensions->ARB_map_buffer_range = GL_TRUE;
1046 extensions->ARB_sync = GL_TRUE;
1047 extensions->ARB_texture_border_clamp = GL_TRUE;
1048 extensions->ARB_texture_cube_map = GL_TRUE;
1049 extensions->ARB_texture_env_combine = GL_TRUE;
1050 extensions->ARB_texture_env_crossbar = GL_TRUE;
1051 extensions->ARB_texture_env_dot3 = GL_TRUE;
1052 extensions->ARB_vertex_program = GL_TRUE;
1053 extensions->ARB_vertex_shader = GL_TRUE;
1054
1055 extensions->EXT_blend_color = GL_TRUE;
1056 extensions->EXT_blend_func_separate = GL_TRUE;
1057 extensions->EXT_blend_minmax = GL_TRUE;
1058 extensions->EXT_EGL_image_storage = GL_TRUE;
1059 extensions->EXT_gpu_program_parameters = GL_TRUE;
1060 extensions->EXT_pixel_buffer_object = GL_TRUE;
1061 extensions->EXT_point_parameters = GL_TRUE;
1062 extensions->EXT_provoking_vertex = GL_TRUE;
1063 extensions->EXT_stencil_two_side = GL_TRUE;
1064 extensions->EXT_texture_env_dot3 = GL_TRUE;
1065
1066 extensions->ATI_fragment_shader = GL_TRUE;
1067 extensions->ATI_texture_env_combine3 = GL_TRUE;
1068
1069 extensions->MESA_framebuffer_flip_y = GL_TRUE;
1070 extensions->MESA_pack_invert = GL_TRUE;
1071
1072 extensions->NV_copy_image = GL_TRUE;
1073 extensions->NV_fog_distance = GL_TRUE;
1074 extensions->NV_texture_env_combine4 = GL_TRUE;
1075 extensions->NV_texture_rectangle = GL_TRUE;
1076
1077 extensions->OES_EGL_image = GL_TRUE;
1078 extensions->OES_EGL_image_external = GL_TRUE;
1079 extensions->OES_draw_texture = GL_TRUE;
1080
1081 /* Expose the extensions which directly correspond to gallium caps. */
1082 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
1083 if (screen->get_param(screen, cap_mapping[i].cap)) {
1084 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
1085 }
1086 }
1087
1088 /* Expose the extensions which directly correspond to gallium formats. */
1089 init_format_extensions(screen, extensions, rendertarget_mapping,
1090 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1091 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1092 init_format_extensions(screen, extensions, rt_blendable,
1093 ARRAY_SIZE(rt_blendable), PIPE_TEXTURE_2D,
1094 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
1095 PIPE_BIND_BLENDABLE);
1096 init_format_extensions(screen, extensions, depthstencil_mapping,
1097 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1098 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1099 init_format_extensions(screen, extensions, texture_mapping,
1100 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1101 PIPE_BIND_SAMPLER_VIEW);
1102 init_format_extensions(screen, extensions, vertex_mapping,
1103 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1104 PIPE_BIND_VERTEX_BUFFER);
1105
1106 /* Figure out GLSL support and set GLSLVersion to it. */
1107 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1108 consts->GLSLVersionCompat =
1109 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1110
1111 const unsigned ESSLVersion =
1112 screen->get_param(screen, PIPE_CAP_ESSL_FEATURE_LEVEL);
1113 const unsigned GLSLVersion =
1114 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1115 consts->GLSLVersion;
1116
1117 _mesa_override_glsl_version(consts);
1118
1119 if (options->force_glsl_version > 0 &&
1120 options->force_glsl_version <= GLSLVersion) {
1121 consts->ForceGLSLVersion = options->force_glsl_version;
1122 }
1123
1124 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1125
1126 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1127
1128 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1129
1130 consts->dri_config_options_sha1 = options->config_options_sha1;
1131
1132 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1133
1134 /* Technically we are turning on the EXT_gpu_shader5 extension,
1135 * ARB_gpu_shader5 does not exist in GLES, but this flag is what
1136 * switches on EXT_gpu_shader5:
1137 */
1138 if (api == API_OPENGLES2 && ESSLVersion >= 320)
1139 extensions->ARB_gpu_shader5 = GL_TRUE;
1140
1141 if (GLSLVersion >= 400 && !options->disable_arb_gpu_shader5)
1142 extensions->ARB_gpu_shader5 = GL_TRUE;
1143 if (GLSLVersion >= 410)
1144 extensions->ARB_shader_precision = GL_TRUE;
1145
1146 /* This extension needs full OpenGL 3.2, but we don't know if that's
1147 * supported at this point. Only check the GLSL version. */
1148 if (GLSLVersion >= 150 &&
1149 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1150 extensions->AMD_vertex_shader_layer = GL_TRUE;
1151 }
1152
1153 if (GLSLVersion >= 140) {
1154 /* Since GLSL 1.40 has support for all of the features of gpu_shader4,
1155 * we can always expose it if the driver can do 140. Supporting
1156 * gpu_shader4 on drivers without GLSL 1.40 is left for a future
1157 * pipe cap.
1158 */
1159 extensions->EXT_gpu_shader4 = GL_TRUE;
1160 extensions->EXT_texture_buffer_object = GL_TRUE;
1161
1162 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1163 extensions->ARB_enhanced_layouts = GL_TRUE;
1164 }
1165
1166 if (GLSLVersion >= 130) {
1167 consts->NativeIntegers = GL_TRUE;
1168 consts->MaxClipPlanes = 8;
1169
1170 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1171 consts->VertexID_is_zero_based = GL_TRUE;
1172 }
1173
1174 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1175 extensions->ARB_conservative_depth = GL_TRUE;
1176 extensions->ARB_shading_language_packing = GL_TRUE;
1177 extensions->OES_depth_texture_cube_map = GL_TRUE;
1178 extensions->ARB_shading_language_420pack = GL_TRUE;
1179 extensions->ARB_texture_query_levels = GL_TRUE;
1180
1181 extensions->ARB_shader_bit_encoding = GL_TRUE;
1182
1183 extensions->EXT_shader_integer_mix = GL_TRUE;
1184 extensions->ARB_arrays_of_arrays = GL_TRUE;
1185 extensions->MESA_shader_integer_functions = GL_TRUE;
1186
1187 if (screen->get_param(screen, PIPE_CAP_OPENCL_INTEGER_FUNCTIONS) &&
1188 screen->get_param(screen, PIPE_CAP_INTEGER_MULTIPLY_32X16)) {
1189 extensions->INTEL_shader_integer_functions2 = GL_TRUE;
1190 }
1191 } else {
1192 /* Optional integer support for GLSL 1.2. */
1193 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1194 PIPE_SHADER_CAP_INTEGERS) &&
1195 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1196 PIPE_SHADER_CAP_INTEGERS)) {
1197 consts->NativeIntegers = GL_TRUE;
1198
1199 extensions->EXT_shader_integer_mix = GL_TRUE;
1200 }
1201
1202 /* Integer textures make no sense before GLSL 1.30 */
1203 extensions->EXT_texture_integer = GL_FALSE;
1204 }
1205
1206 if (options->glsl_zero_init) {
1207 consts->GLSLZeroInit = 1;
1208 }
1209
1210 consts->ForceIntegerTexNearest = options->force_integer_tex_nearest;
1211
1212 consts->VendorOverride = options->force_gl_vendor;
1213
1214 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1215
1216 /* Below are the cases which cannot be moved into tables easily. */
1217
1218 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1219 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1220 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1221 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1222 extensions->ARB_tessellation_shader = GL_TRUE;
1223 }
1224
1225 /* What this is really checking for is the ability to support multiple
1226 * invocations of a geometry shader. There is no separate cap for that, so
1227 * we check the GLSLVersion.
1228 */
1229 if ((GLSLVersion >= 400 || ESSLVersion >= 310) &&
1230 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1231 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1232 extensions->OES_geometry_shader = GL_TRUE;
1233 }
1234
1235 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1236 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1237 */
1238 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1239 extensions->ARB_gpu_shader5;
1240
1241 /* Maximum sample count. */
1242 {
1243 static const enum pipe_format color_formats[] = {
1244 PIPE_FORMAT_R8G8B8A8_UNORM,
1245 PIPE_FORMAT_B8G8R8A8_UNORM,
1246 PIPE_FORMAT_A8R8G8B8_UNORM,
1247 PIPE_FORMAT_A8B8G8R8_UNORM,
1248 };
1249 static const enum pipe_format depth_formats[] = {
1250 PIPE_FORMAT_Z16_UNORM,
1251 PIPE_FORMAT_Z24X8_UNORM,
1252 PIPE_FORMAT_X8Z24_UNORM,
1253 PIPE_FORMAT_Z32_UNORM,
1254 PIPE_FORMAT_Z32_FLOAT
1255 };
1256 static const enum pipe_format int_formats[] = {
1257 PIPE_FORMAT_R8G8B8A8_SINT
1258 };
1259 static const enum pipe_format void_formats[] = {
1260 PIPE_FORMAT_NONE
1261 };
1262
1263 consts->MaxSamples =
1264 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1265 color_formats, 16,
1266 PIPE_BIND_RENDER_TARGET);
1267
1268 consts->MaxImageSamples =
1269 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1270 color_formats, 16,
1271 PIPE_BIND_SHADER_IMAGE);
1272
1273 consts->MaxColorTextureSamples =
1274 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1275 color_formats, consts->MaxSamples,
1276 PIPE_BIND_SAMPLER_VIEW);
1277
1278 consts->MaxDepthTextureSamples =
1279 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1280 depth_formats, consts->MaxSamples,
1281 PIPE_BIND_SAMPLER_VIEW);
1282
1283 consts->MaxIntegerSamples =
1284 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1285 int_formats, consts->MaxSamples,
1286 PIPE_BIND_SAMPLER_VIEW);
1287
1288 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1289 consts->MaxFramebufferSamples =
1290 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1291 void_formats, 32,
1292 PIPE_BIND_RENDER_TARGET);
1293
1294 if (extensions->AMD_framebuffer_multisample_advanced) {
1295 /* AMD_framebuffer_multisample_advanced */
1296 /* This can be greater than storage samples. */
1297 consts->MaxColorFramebufferSamples =
1298 get_max_samples_for_formats_advanced(screen,
1299 ARRAY_SIZE(color_formats),
1300 color_formats, 16,
1301 consts->MaxSamples,
1302 PIPE_BIND_RENDER_TARGET);
1303
1304 /* If the driver supports N color samples, it means it supports
1305 * N samples and N storage samples. N samples >= N storage
1306 * samples.
1307 */
1308 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1309 consts->MaxDepthStencilFramebufferSamples =
1310 consts->MaxDepthTextureSamples;
1311
1312 assert(consts->MaxColorFramebufferSamples >=
1313 consts->MaxDepthStencilFramebufferSamples);
1314 assert(consts->MaxDepthStencilFramebufferSamples >=
1315 consts->MaxColorFramebufferStorageSamples);
1316
1317 consts->NumSupportedMultisampleModes = 0;
1318
1319 unsigned depth_samples_supported = 0;
1320
1321 for (unsigned samples = 2;
1322 samples <= consts->MaxDepthStencilFramebufferSamples;
1323 samples++) {
1324 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1325 PIPE_TEXTURE_2D, samples, samples,
1326 PIPE_BIND_DEPTH_STENCIL))
1327 depth_samples_supported |= 1 << samples;
1328 }
1329
1330 for (unsigned samples = 2;
1331 samples <= consts->MaxColorFramebufferSamples;
1332 samples++) {
1333 for (unsigned depth_samples = 2;
1334 depth_samples <= samples; depth_samples++) {
1335 if (!(depth_samples_supported & (1 << depth_samples)))
1336 continue;
1337
1338 for (unsigned storage_samples = 2;
1339 storage_samples <= depth_samples; storage_samples++) {
1340 if (screen->is_format_supported(screen,
1341 PIPE_FORMAT_R8G8B8A8_UNORM,
1342 PIPE_TEXTURE_2D,
1343 samples,
1344 storage_samples,
1345 PIPE_BIND_RENDER_TARGET)) {
1346 unsigned i = consts->NumSupportedMultisampleModes;
1347
1348 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1349 consts->SupportedMultisampleModes[i].NumColorSamples =
1350 samples;
1351 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1352 storage_samples;
1353 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1354 depth_samples;
1355 consts->NumSupportedMultisampleModes++;
1356 }
1357 }
1358 }
1359 }
1360 }
1361 }
1362
1363 if (consts->MaxSamples >= 2) {
1364 /* Real MSAA support */
1365 extensions->EXT_framebuffer_multisample = GL_TRUE;
1366 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1367 }
1368 else if (consts->MaxSamples > 0 &&
1369 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1370 /* fake MSAA support */
1371 consts->FakeSWMSAA = GL_TRUE;
1372 extensions->EXT_framebuffer_multisample = GL_TRUE;
1373 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1374 extensions->ARB_texture_multisample = GL_TRUE;
1375 }
1376
1377 if (consts->MaxDualSourceDrawBuffers > 0 &&
1378 !options->disable_blend_func_extended)
1379 extensions->ARB_blend_func_extended = GL_TRUE;
1380
1381 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1382 extensions->ARB_timer_query) {
1383 extensions->EXT_timer_query = GL_TRUE;
1384 }
1385
1386 if (extensions->ARB_transform_feedback2 &&
1387 extensions->ARB_draw_instanced) {
1388 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1389 }
1390 if (options->force_glsl_extensions_warn)
1391 consts->ForceGLSLExtensionsWarn = 1;
1392
1393 if (options->disable_glsl_line_continuations)
1394 consts->DisableGLSLLineContinuations = 1;
1395
1396 if (options->allow_glsl_extension_directive_midshader)
1397 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1398
1399 if (options->allow_glsl_builtin_const_expression)
1400 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1401
1402 if (options->allow_glsl_relaxed_es)
1403 consts->AllowGLSLRelaxedES = GL_TRUE;
1404
1405 if (options->allow_glsl_layout_qualifier_on_function_parameters)
1406 consts->AllowLayoutQualifiersOnFunctionParameters = GL_TRUE;
1407
1408 consts->MinMapBufferAlignment =
1409 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1410
1411 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1412 if (api == API_OPENGL_COMPAT &&
1413 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1414 extensions->ARB_texture_buffer_object = GL_FALSE;
1415
1416 if (extensions->ARB_texture_buffer_object) {
1417 consts->MaxTextureBufferSize =
1418 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1419 (1u << 31) - 1);
1420 consts->TextureBufferOffsetAlignment =
1421 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1422
1423 if (consts->TextureBufferOffsetAlignment)
1424 extensions->ARB_texture_buffer_range = GL_TRUE;
1425
1426 init_format_extensions(screen, extensions, tbo_rgb32,
1427 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1428 PIPE_BIND_SAMPLER_VIEW);
1429 }
1430
1431 extensions->OES_texture_buffer =
1432 extensions->ARB_texture_buffer_object &&
1433 extensions->ARB_texture_buffer_range &&
1434 extensions->ARB_texture_buffer_object_rgb32 &&
1435 extensions->ARB_shader_image_load_store;
1436
1437 extensions->EXT_framebuffer_sRGB =
1438 screen->get_param(screen, PIPE_CAP_DEST_SURFACE_SRGB_CONTROL) &&
1439 extensions->EXT_sRGB;
1440
1441 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1442 * If the number of available texture indirections is very limited, then we
1443 * prefer to disable varying packing rather than run the risk of varying
1444 * packing preventing a shader from running.
1445 */
1446 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1447 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1448 /* We can't disable varying packing if transform feedback is available,
1449 * because transform feedback code assumes a packed varying layout.
1450 */
1451 if (!extensions->EXT_transform_feedback)
1452 consts->DisableVaryingPacking = GL_TRUE;
1453 }
1454
1455 if (!screen->get_param(screen, PIPE_CAP_PACKED_STREAM_OUTPUT))
1456 consts->DisableTransformFeedbackPacking = GL_TRUE;
1457
1458 unsigned max_fb_fetch_rts = screen->get_param(screen, PIPE_CAP_FBFETCH);
1459 bool coherent_fb_fetch =
1460 screen->get_param(screen, PIPE_CAP_FBFETCH_COHERENT);
1461
1462 if (max_fb_fetch_rts > 0) {
1463 extensions->KHR_blend_equation_advanced = true;
1464 extensions->KHR_blend_equation_advanced_coherent = coherent_fb_fetch;
1465
1466 if (max_fb_fetch_rts >=
1467 screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS)) {
1468 extensions->EXT_shader_framebuffer_fetch_non_coherent = true;
1469 extensions->EXT_shader_framebuffer_fetch = coherent_fb_fetch;
1470 }
1471 }
1472
1473 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1474 if (consts->MaxViewports >= 16) {
1475 if (GLSLVersion >= 400) {
1476 consts->ViewportBounds.Min = -32768.0;
1477 consts->ViewportBounds.Max = 32767.0;
1478 } else {
1479 consts->ViewportBounds.Min = -16384.0;
1480 consts->ViewportBounds.Max = 16383.0;
1481 }
1482 extensions->ARB_viewport_array = GL_TRUE;
1483 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1484 if (extensions->AMD_vertex_shader_layer)
1485 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1486 }
1487
1488 if (extensions->AMD_vertex_shader_layer &&
1489 extensions->AMD_vertex_shader_viewport_index &&
1490 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1491 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1492
1493 /* ARB_framebuffer_no_attachments */
1494 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1495 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1496 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1497 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1498 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1499
1500 /* GL_ARB_ES3_compatibility.
1501 * Check requirements for GLSL ES 3.00.
1502 */
1503 if (GLSLVersion >= 130 &&
1504 extensions->ARB_uniform_buffer_object &&
1505 extensions->NV_primitive_restart &&
1506 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1507 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1508 /* Requirements for ETC2 emulation. */
1509 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1510 PIPE_TEXTURE_2D, 0, 0,
1511 PIPE_BIND_SAMPLER_VIEW) &&
1512 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1513 PIPE_TEXTURE_2D, 0, 0,
1514 PIPE_BIND_SAMPLER_VIEW) &&
1515 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1516 PIPE_TEXTURE_2D, 0, 0,
1517 PIPE_BIND_SAMPLER_VIEW) &&
1518 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1519 PIPE_TEXTURE_2D, 0, 0,
1520 PIPE_BIND_SAMPLER_VIEW) &&
1521 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1522 PIPE_TEXTURE_2D, 0, 0,
1523 PIPE_BIND_SAMPLER_VIEW) &&
1524 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1525 PIPE_TEXTURE_2D, 0, 0,
1526 PIPE_BIND_SAMPLER_VIEW)) {
1527 extensions->ARB_ES3_compatibility = GL_TRUE;
1528 }
1529
1530 #ifdef HAVE_ST_VDPAU
1531 if (screen->get_video_param &&
1532 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1533 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1534 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1535 extensions->NV_vdpau_interop = GL_TRUE;
1536 }
1537 #endif
1538
1539 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1540 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1541 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1542 }
1543
1544 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1545 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1546 extensions->GREMEDY_string_marker = GL_TRUE;
1547
1548 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1549 int compute_supported_irs =
1550 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1551 PIPE_SHADER_CAP_SUPPORTED_IRS);
1552 if (compute_supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
1553 (1 << PIPE_SHADER_IR_NIR))) {
1554 enum pipe_shader_ir ir =
1555 (compute_supported_irs & PIPE_SHADER_IR_NIR) ?
1556 PIPE_SHADER_IR_NIR : PIPE_SHADER_IR_TGSI;
1557 uint64_t grid_size[3], block_size[3];
1558 uint64_t max_local_size, max_threads_per_block;
1559
1560 screen->get_compute_param(screen, ir,
1561 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1562 screen->get_compute_param(screen, ir,
1563 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1564 screen->get_compute_param(screen, ir,
1565 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1566 &max_threads_per_block);
1567 screen->get_compute_param(screen, ir,
1568 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1569 &max_local_size);
1570
1571 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1572 consts->MaxComputeSharedMemorySize = max_local_size;
1573
1574 for (i = 0; i < 3; i++) {
1575 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1576 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1577 }
1578
1579 extensions->ARB_compute_shader =
1580 extensions->ARB_shader_image_load_store &&
1581 extensions->ARB_shader_atomic_counters;
1582
1583 if (extensions->ARB_compute_shader) {
1584 uint64_t max_variable_threads_per_block = 0;
1585
1586 screen->get_compute_param(screen, ir,
1587 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1588 &max_variable_threads_per_block);
1589
1590 for (i = 0; i < 3; i++) {
1591 /* Clamp the values to avoid having a local work group size
1592 * greater than the maximum number of invocations.
1593 */
1594 consts->MaxComputeVariableGroupSize[i] =
1595 MIN2(consts->MaxComputeWorkGroupSize[i],
1596 max_variable_threads_per_block);
1597 }
1598 consts->MaxComputeVariableGroupInvocations =
1599 max_variable_threads_per_block;
1600
1601 extensions->ARB_compute_variable_group_size =
1602 max_variable_threads_per_block > 0;
1603 }
1604 }
1605 }
1606
1607 extensions->ARB_texture_float =
1608 extensions->OES_texture_half_float &&
1609 extensions->OES_texture_float;
1610
1611 if (extensions->EXT_texture_filter_anisotropic &&
1612 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1613 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1614
1615 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1616
1617 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1618 * there's no clean way of telling whether we would support ES 3.1 from
1619 * here, so copy the condition from compute_version_es2 here. A lot of
1620 * these are redunant, but simpler to just have a (near-)exact copy here.
1621 */
1622 extensions->ARB_ES3_1_compatibility =
1623 extensions->ARB_ES3_compatibility &&
1624 extensions->ARB_arrays_of_arrays &&
1625 extensions->ARB_compute_shader &&
1626 extensions->ARB_draw_indirect &&
1627 extensions->ARB_explicit_uniform_location &&
1628 extensions->ARB_framebuffer_no_attachments &&
1629 extensions->ARB_shader_atomic_counters &&
1630 extensions->ARB_shader_image_load_store &&
1631 extensions->ARB_shader_image_size &&
1632 extensions->ARB_shader_storage_buffer_object &&
1633 extensions->ARB_shading_language_packing &&
1634 extensions->ARB_stencil_texturing &&
1635 extensions->ARB_texture_multisample &&
1636 extensions->ARB_gpu_shader5 &&
1637 extensions->EXT_shader_integer_mix;
1638
1639 extensions->OES_texture_cube_map_array =
1640 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1641 extensions->OES_geometry_shader &&
1642 extensions->ARB_texture_cube_map_array;
1643
1644 extensions->OES_viewport_array =
1645 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1646 extensions->OES_geometry_shader &&
1647 extensions->ARB_viewport_array;
1648
1649 extensions->OES_primitive_bounding_box =
1650 extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310;
1651
1652 consts->NoPrimitiveBoundingBoxOutput = true;
1653
1654 extensions->ANDROID_extension_pack_es31a =
1655 extensions->KHR_texture_compression_astc_ldr &&
1656 extensions->KHR_blend_equation_advanced &&
1657 extensions->OES_sample_variables &&
1658 extensions->ARB_shader_image_load_store &&
1659 extensions->ARB_texture_stencil8 &&
1660 extensions->ARB_texture_multisample &&
1661 extensions->OES_copy_image &&
1662 extensions->ARB_draw_buffers_blend &&
1663 extensions->OES_geometry_shader &&
1664 extensions->ARB_gpu_shader5 &&
1665 extensions->OES_primitive_bounding_box &&
1666 extensions->ARB_tessellation_shader &&
1667 extensions->ARB_texture_border_clamp &&
1668 extensions->OES_texture_buffer &&
1669 extensions->OES_texture_cube_map_array &&
1670 extensions->EXT_texture_sRGB_decode;
1671
1672 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1673 * before overall versions are selected. Also it's actually a subset of ES
1674 * 3.2, since it doesn't require ASTC or advanced blending.
1675 */
1676 extensions->ARB_ES3_2_compatibility =
1677 extensions->ARB_ES3_1_compatibility &&
1678 extensions->KHR_robustness &&
1679 extensions->ARB_copy_image &&
1680 extensions->ARB_draw_buffers_blend &&
1681 extensions->ARB_draw_elements_base_vertex &&
1682 extensions->OES_geometry_shader &&
1683 extensions->ARB_gpu_shader5 &&
1684 extensions->ARB_sample_shading &&
1685 extensions->ARB_tessellation_shader &&
1686 extensions->ARB_texture_border_clamp &&
1687 extensions->OES_texture_buffer &&
1688 extensions->ARB_texture_cube_map_array &&
1689 extensions->ARB_texture_stencil8 &&
1690 extensions->ARB_texture_multisample;
1691
1692 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1693 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1694 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1695 float max_dilate;
1696 bool pre_snap_triangles, pre_snap_points_lines;
1697
1698 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1699
1700 pre_snap_triangles =
1701 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1702 pre_snap_points_lines =
1703 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1704
1705 extensions->NV_conservative_raster =
1706 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1707
1708 if (extensions->NV_conservative_raster) {
1709 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1710 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1711 extensions->NV_conservative_raster_pre_snap =
1712 pre_snap_triangles && pre_snap_points_lines;
1713 }
1714 }
1715
1716 if (extensions->ARB_gl_spirv) {
1717 struct spirv_supported_capabilities *spirv_caps = &consts->SpirVCapabilities;
1718
1719 spirv_caps->atomic_storage = extensions->ARB_shader_atomic_counters;
1720 spirv_caps->demote_to_helper_invocation = extensions->EXT_demote_to_helper_invocation;
1721 spirv_caps->draw_parameters = extensions->ARB_shader_draw_parameters;
1722 spirv_caps->float64 = extensions->ARB_gpu_shader_fp64;
1723 spirv_caps->geometry_streams = extensions->ARB_gpu_shader5;
1724 spirv_caps->image_ms_array = extensions->ARB_shader_image_load_store &&
1725 consts->MaxImageSamples > 1;
1726 spirv_caps->image_read_without_format = extensions->EXT_shader_image_load_formatted;
1727 spirv_caps->image_write_without_format = extensions->ARB_shader_image_load_store;
1728 spirv_caps->int64 = extensions->ARB_gpu_shader_int64;
1729 spirv_caps->post_depth_coverage = extensions->ARB_post_depth_coverage;
1730 spirv_caps->shader_clock = extensions->ARB_shader_clock;
1731 spirv_caps->shader_viewport_index_layer = extensions->ARB_shader_viewport_layer_array;
1732 spirv_caps->stencil_export = extensions->ARB_shader_stencil_export;
1733 spirv_caps->storage_image_ms = extensions->ARB_shader_image_load_store &&
1734 consts->MaxImageSamples > 1;
1735 spirv_caps->subgroup_ballot = extensions->ARB_shader_ballot;
1736 spirv_caps->subgroup_vote = extensions->ARB_shader_group_vote;
1737 spirv_caps->tessellation = extensions->ARB_tessellation_shader;
1738 spirv_caps->transform_feedback = extensions->ARB_transform_feedback3;
1739 spirv_caps->variable_pointers =
1740 screen->get_param(screen, PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS);
1741 spirv_caps->integer_functions2 = extensions->INTEL_shader_integer_functions2;
1742
1743 consts->SpirVExtensions = CALLOC_STRUCT(spirv_supported_extensions);
1744 _mesa_fill_supported_spirv_extensions(consts->SpirVExtensions, spirv_caps);
1745 }
1746
1747 consts->AllowDrawOutOfOrder = options->allow_draw_out_of_order;
1748 }