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
_min(unsigned a,unsigned b)55 static unsigned _min(unsigned a, unsigned b)
56 {
57 return (a < b) ? a : b;
58 }
59
_maxf(float a,float b)60 static float _maxf(float a, float b)
61 {
62 return (a > b) ? a : b;
63 }
64
_clamp(int a,int min,int max)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 */
st_init_limits(struct pipe_screen * screen,struct gl_constants * c,struct gl_extensions * extensions)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 c->MaxTextureMbytes = MAX2(c->MaxTextureMbytes,
91 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_MB));
92
93 c->Max3DTextureLevels
94 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
95 MAX_3D_TEXTURE_LEVELS);
96
97 c->MaxCubeTextureLevels
98 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
99 MAX_CUBE_TEXTURE_LEVELS);
100
101 c->MaxTextureRectSize = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
102
103 c->MaxArrayTextureLayers
104 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
105
106 /* Define max viewport size and max renderbuffer size in terms of
107 * max texture size (note: max tex RECT size = max tex 2D size).
108 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
109 */
110 c->MaxViewportWidth =
111 c->MaxViewportHeight =
112 c->MaxRenderbufferSize = c->MaxTextureRectSize;
113
114 c->SubPixelBits =
115 screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
116 c->ViewportSubpixelBits =
117 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
118
119 c->MaxDrawBuffers = c->MaxColorAttachments =
120 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
121 1, MAX_DRAW_BUFFERS);
122
123 c->MaxDualSourceDrawBuffers =
124 _clamp(screen->get_param(screen,
125 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
126 0, MAX_DRAW_BUFFERS);
127
128 c->MaxLineWidth =
129 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
130 c->MaxLineWidthAA =
131 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
132
133 c->MaxPointSize =
134 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
135 c->MaxPointSizeAA =
136 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
137
138 c->MinPointSize = 1.0f;
139 c->MinPointSizeAA = 1.0f;
140
141 c->MaxTextureMaxAnisotropy =
142 _maxf(2.0f,
143 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
144
145 c->MaxTextureLodBias =
146 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
147
148 c->QuadsFollowProvokingVertexConvention =
149 screen->get_param(screen,
150 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
151
152 c->MaxUniformBlockSize =
153 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
154 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
155 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
156 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
157 */
158 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
159
160 if (c->MaxUniformBlockSize < 16384) {
161 can_ubo = false;
162 }
163
164 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
165 struct gl_shader_compiler_options *options;
166 struct gl_program_constants *pc;
167 const nir_shader_compiler_options *nir_options = NULL;
168
169 bool prefer_nir = PIPE_SHADER_IR_NIR ==
170 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);
171
172 if (screen->get_compiler_options && prefer_nir) {
173 nir_options = (const nir_shader_compiler_options *)
174 screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
175 }
176
177 const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
178 pc = &c->Program[stage];
179 options = &c->ShaderCompilerOptions[stage];
180 c->ShaderCompilerOptions[stage].NirOptions = nir_options;
181
182 if (sh == PIPE_SHADER_COMPUTE) {
183 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
184 continue;
185 supported_irs =
186 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
187 if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
188 (1 << PIPE_SHADER_IR_NIR))))
189 continue;
190 }
191
192 pc->MaxTextureImageUnits =
193 _min(screen->get_shader_param(screen, sh,
194 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
195 MAX_TEXTURE_IMAGE_UNITS);
196
197 pc->MaxInstructions =
198 pc->MaxNativeInstructions =
199 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
200 pc->MaxAluInstructions =
201 pc->MaxNativeAluInstructions =
202 screen->get_shader_param(screen, sh,
203 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
204 pc->MaxTexInstructions =
205 pc->MaxNativeTexInstructions =
206 screen->get_shader_param(screen, sh,
207 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
208 pc->MaxTexIndirections =
209 pc->MaxNativeTexIndirections =
210 screen->get_shader_param(screen, sh,
211 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
212 pc->MaxAttribs =
213 pc->MaxNativeAttribs =
214 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
215 pc->MaxTemps =
216 pc->MaxNativeTemps =
217 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
218 pc->MaxAddressRegs =
219 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
220
221 pc->MaxUniformComponents =
222 screen->get_shader_param(screen, sh,
223 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
224 pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
225 MAX_UNIFORMS * 4);
226
227 /* For ARB programs, prog_src_register::Index is a signed 13-bit number.
228 * This gives us a limit of 4096 values - but we may need to generate
229 * internal values in addition to what the source program uses. So, we
230 * drop the limit one step lower, to 2048, to be safe.
231 */
232 pc->MaxParameters =
233 pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
234 pc->MaxInputComponents =
235 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
236 pc->MaxOutputComponents =
237 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
238
239
240 pc->MaxUniformBlocks =
241 screen->get_shader_param(screen, sh,
242 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
243 if (pc->MaxUniformBlocks)
244 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
245 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
246
247 pc->MaxCombinedUniformComponents =
248 pc->MaxUniformComponents +
249 (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
250
251 pc->MaxShaderStorageBlocks =
252 screen->get_shader_param(screen, sh,
253 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
254
255 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
256 if (temp) {
257 /*
258 * for separate atomic counters get the actual hw limits
259 * per stage on atomic counters and buffers
260 */
261 pc->MaxAtomicCounters = temp;
262 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
263 } else if (pc->MaxShaderStorageBlocks) {
264 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
265 /*
266 * without separate atomic counters, reserve half of the available
267 * SSBOs for atomic buffers, and the other half for normal SSBOs.
268 */
269 pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
270 pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
271 }
272 pc->MaxImageUniforms = screen->get_shader_param(
273 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
274
275 /* Gallium doesn't really care about local vs. env parameters so use the
276 * same limits.
277 */
278 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
279 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
280
281 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
282 pc->LowInt.RangeMin = 31;
283 pc->LowInt.RangeMax = 30;
284 pc->LowInt.Precision = 0;
285 pc->MediumInt = pc->HighInt = pc->LowInt;
286 }
287
288 /* TODO: make these more fine-grained if anyone needs it */
289 options->MaxIfDepth =
290 screen->get_shader_param(screen, sh,
291 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
292 options->EmitNoLoops =
293 !screen->get_shader_param(screen, sh,
294 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
295 options->EmitNoMainReturn =
296 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
297
298 options->EmitNoCont =
299 !screen->get_shader_param(screen, sh,
300 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
301
302 options->EmitNoIndirectInput =
303 !screen->get_shader_param(screen, sh,
304 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
305 options->EmitNoIndirectOutput =
306 !screen->get_shader_param(screen, sh,
307 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
308 options->EmitNoIndirectTemp =
309 !screen->get_shader_param(screen, sh,
310 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
311 options->EmitNoIndirectUniform =
312 !screen->get_shader_param(screen, sh,
313 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
314
315 if (pc->MaxNativeInstructions &&
316 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
317 can_ubo = false;
318 }
319
320 if (options->EmitNoLoops)
321 options->MaxUnrollIterations =
322 MIN2(screen->get_shader_param(screen, sh,
323 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
324 65536);
325 else
326 options->MaxUnrollIterations =
327 screen->get_shader_param(screen, sh,
328 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
329
330 if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
331 options->LowerCombinedClipCullDistance = true;
332
333 /* NIR can do the lowering on our behalf and we'll get better results
334 * because it can actually optimize SSBO access.
335 */
336 options->LowerBufferInterfaceBlocks = !prefer_nir;
337
338 if (sh == PIPE_SHADER_VERTEX || sh == PIPE_SHADER_GEOMETRY) {
339 if (screen->get_param(screen, PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED))
340 options->LowerBuiltinVariablesXfb |= VARYING_BIT_POS;
341 if (screen->get_param(screen, PIPE_CAP_PSIZ_CLAMPED))
342 options->LowerBuiltinVariablesXfb |= VARYING_BIT_PSIZ;
343 }
344
345 options->LowerPrecisionFloat16 =
346 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_FP16);
347 options->LowerPrecisionDerivatives =
348 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_FP16_DERIVATIVES);
349 options->LowerPrecisionInt16 =
350 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INT16);
351 options->LowerPrecisionConstants =
352 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_GLSL_16BIT_CONSTS);
353 }
354
355 c->MaxUserAssignableUniformLocations =
356 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
357 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
358 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
359 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
360 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
361
362 c->GLSLOptimizeConservatively =
363 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
364 c->GLSLLowerConstArrays =
365 screen->get_param(screen, PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF);
366 c->GLSLTessLevelsAsInputs =
367 screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
368 c->LowerTessLevel =
369 !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
370 c->LowerCsDerivedVariables =
371 !screen->get_param(screen, PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED);
372 c->PrimitiveRestartForPatches =
373 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
374
375 c->MaxCombinedTextureImageUnits =
376 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
377 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
378 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
379 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
380 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
381 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
382 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
383
384 /* This depends on program constants. */
385 c->MaxTextureCoordUnits
386 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
387 MAX_TEXTURE_COORD_UNITS);
388
389 c->MaxTextureUnits =
390 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
391 c->MaxTextureCoordUnits);
392
393 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
394 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
395
396 c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
397 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
398 c->MaxGeometryOutputVertices =
399 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
400 c->MaxGeometryTotalOutputComponents =
401 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
402 c->MaxGeometryShaderInvocations =
403 screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
404 c->MaxTessPatchComponents =
405 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
406 MAX_VARYING) * 4;
407
408 c->MinProgramTexelOffset =
409 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
410 c->MaxProgramTexelOffset =
411 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
412
413 c->MaxProgramTextureGatherComponents =
414 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
415 c->MinProgramTextureGatherOffset =
416 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
417 c->MaxProgramTextureGatherOffset =
418 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
419
420 c->MaxTransformFeedbackBuffers =
421 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
422 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
423 MAX_FEEDBACK_BUFFERS);
424 c->MaxTransformFeedbackSeparateComponents =
425 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
426 c->MaxTransformFeedbackInterleavedComponents =
427 screen->get_param(screen,
428 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
429 c->MaxVertexStreams =
430 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
431
432 /* The vertex stream must fit into pipe_stream_output_info::stream */
433 assert(c->MaxVertexStreams <= 4);
434
435 c->MaxVertexAttribStride
436 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
437
438 /* The value cannot be larger than that since pipe_vertex_buffer::src_offset
439 * is only 16 bits.
440 */
441 temp = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET);
442 c->MaxVertexAttribRelativeOffset = MIN2(0xffff, temp);
443
444 c->StripTextureBorder = GL_TRUE;
445
446 c->GLSLSkipStrictMaxUniformLimitCheck =
447 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
448
449 c->UniformBufferOffsetAlignment =
450 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
451
452 if (can_ubo) {
453 extensions->ARB_uniform_buffer_object = GL_TRUE;
454 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
455 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
456 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
457 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
458 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
459 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
460 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
461 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
462 }
463
464 c->GLSLFragCoordIsSysVal =
465 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
466 c->GLSLPointCoordIsSysVal =
467 screen->get_param(screen, PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL);
468 c->GLSLFrontFacingIsSysVal =
469 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
470
471 /* GL_ARB_get_program_binary */
472 if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
473 c->NumProgramBinaryFormats = 1;
474
475 c->MaxAtomicBufferBindings =
476 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
477 c->MaxAtomicBufferSize =
478 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
479
480 c->MaxCombinedAtomicBuffers =
481 MIN2(screen->get_param(screen,
482 PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
483 MAX_COMBINED_ATOMIC_BUFFERS);
484 if (!c->MaxCombinedAtomicBuffers) {
485 c->MaxCombinedAtomicBuffers =
486 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
487 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
488 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
489 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
490 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
491 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
492 }
493
494 c->MaxCombinedAtomicCounters =
495 screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
496 if (!c->MaxCombinedAtomicCounters)
497 c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
498
499 if (c->MaxCombinedAtomicBuffers > 0) {
500 extensions->ARB_shader_atomic_counters = GL_TRUE;
501 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
502 }
503
504 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
505 c->ShaderStorageBufferOffsetAlignment =
506 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
507 if (c->ShaderStorageBufferOffsetAlignment) {
508 c->MaxCombinedShaderStorageBlocks =
509 MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
510 MAX_COMBINED_SHADER_STORAGE_BUFFERS);
511 if (!c->MaxCombinedShaderStorageBlocks) {
512 c->MaxCombinedShaderStorageBlocks =
513 c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
514 c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
515 c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
516 c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
517 c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
518 assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
519 }
520 c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;
521
522 c->MaxCombinedShaderOutputResources +=
523 c->MaxCombinedShaderStorageBlocks;
524 c->MaxShaderStorageBlockSize =
525 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
526 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
527 }
528
529 c->MaxCombinedImageUniforms =
530 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
531 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
532 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
533 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
534 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
535 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
536 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
537 c->MaxImageUnits = MAX_IMAGE_UNITS;
538 if (c->MaxCombinedImageUniforms) {
539 extensions->ARB_shader_image_load_store = GL_TRUE;
540 extensions->ARB_shader_image_size = GL_TRUE;
541 }
542
543 /* ARB_framebuffer_no_attachments */
544 c->MaxFramebufferWidth = c->MaxViewportWidth;
545 c->MaxFramebufferHeight = c->MaxViewportHeight;
546 /* NOTE: we cheat here a little by assuming that
547 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
548 * number of layers as we need, although we technically
549 * could have more the generality is not really useful
550 * in practicality.
551 */
552 c->MaxFramebufferLayers =
553 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
554
555 c->MaxWindowRectangles =
556 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
557
558 c->SparseBufferPageSize =
559 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
560
561 c->AllowMappedBuffersDuringExecution =
562 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
563
564 c->BufferCreateMapUnsynchronizedThreadSafe =
565 screen->get_param(screen, PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE);
566
567 c->UseSTD430AsDefaultPacking =
568 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
569
570 c->MaxSubpixelPrecisionBiasBits =
571 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
572
573 c->ConservativeRasterDilateRange[0] =
574 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
575 c->ConservativeRasterDilateRange[1] =
576 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
577 c->ConservativeRasterDilateGranularity =
578 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
579
580 /* limit the max combined shader output resources to a driver limit */
581 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
582 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
583 c->MaxCombinedShaderOutputResources = temp;
584
585 c->VertexBufferOffsetIsInt32 =
586 screen->get_param(screen, PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET);
587
588 c->MultiDrawWithUserIndices =
589 screen->get_param(screen, PIPE_CAP_DRAW_INFO_START_WITH_USER_INDICES);
590
591 c->AllowDynamicVAOFastPath = true;
592
593 c->glBeginEndBufferSize =
594 screen->get_param(screen, PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE);
595 }
596
597
598 /**
599 * Given a member \c x of struct gl_extensions, return offset of
600 * \c x in bytes.
601 */
602 #define o(x) offsetof(struct gl_extensions, x)
603
604
605 struct st_extension_cap_mapping {
606 int extension_offset;
607 int cap;
608 };
609
610 struct st_extension_format_mapping {
611 int extension_offset[2];
612 enum pipe_format format[32];
613
614 /* If TRUE, at least one format must be supported for the extensions to be
615 * advertised. If FALSE, all the formats must be supported. */
616 GLboolean need_at_least_one;
617 };
618
619 /**
620 * Enable extensions if certain pipe formats are supported by the driver.
621 * What extensions will be enabled and what formats must be supported is
622 * described by the array of st_extension_format_mapping.
623 *
624 * target and bind_flags are passed to is_format_supported.
625 */
626 static void
init_format_extensions(struct pipe_screen * screen,struct gl_extensions * extensions,const struct st_extension_format_mapping * mapping,unsigned num_mappings,enum pipe_texture_target target,unsigned bind_flags)627 init_format_extensions(struct pipe_screen *screen,
628 struct gl_extensions *extensions,
629 const struct st_extension_format_mapping *mapping,
630 unsigned num_mappings,
631 enum pipe_texture_target target,
632 unsigned bind_flags)
633 {
634 GLboolean *extension_table = (GLboolean *) extensions;
635 unsigned i;
636 int j;
637 int num_formats = ARRAY_SIZE(mapping->format);
638 int num_ext = ARRAY_SIZE(mapping->extension_offset);
639
640 for (i = 0; i < num_mappings; i++) {
641 int num_supported = 0;
642
643 /* Examine each format in the list. */
644 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
645 if (screen->is_format_supported(screen, mapping[i].format[j],
646 target, 0, 0, bind_flags)) {
647 num_supported++;
648 }
649 }
650
651 if (!num_supported ||
652 (!mapping[i].need_at_least_one && num_supported != j)) {
653 continue;
654 }
655
656 /* Enable all extensions in the list. */
657 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
658 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
659 }
660 }
661
662
663 /**
664 * Given a list of formats and bind flags, return the maximum number
665 * of samples supported by any of those formats.
666 */
667 static unsigned
get_max_samples_for_formats(struct pipe_screen * screen,unsigned num_formats,const enum pipe_format * formats,unsigned max_samples,unsigned bind)668 get_max_samples_for_formats(struct pipe_screen *screen,
669 unsigned num_formats,
670 const enum pipe_format *formats,
671 unsigned max_samples,
672 unsigned bind)
673 {
674 unsigned i, f;
675
676 for (i = max_samples; i > 0; --i) {
677 for (f = 0; f < num_formats; f++) {
678 if (screen->is_format_supported(screen, formats[f],
679 PIPE_TEXTURE_2D, i, i, bind)) {
680 return i;
681 }
682 }
683 }
684 return 0;
685 }
686
687 static unsigned
get_max_samples_for_formats_advanced(struct pipe_screen * screen,unsigned num_formats,const enum pipe_format * formats,unsigned max_samples,unsigned num_storage_samples,unsigned bind)688 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
689 unsigned num_formats,
690 const enum pipe_format *formats,
691 unsigned max_samples,
692 unsigned num_storage_samples,
693 unsigned bind)
694 {
695 unsigned i, f;
696
697 for (i = max_samples; i > 0; --i) {
698 for (f = 0; f < num_formats; f++) {
699 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
700 i, num_storage_samples, bind)) {
701 return i;
702 }
703 }
704 }
705 return 0;
706 }
707
708 /**
709 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
710 * which GL extensions are supported.
711 * Quite a few extensions are always supported because they are standard
712 * features or can be built on top of other gallium features.
713 * Some fine tuning may still be needed.
714 */
st_init_extensions(struct pipe_screen * screen,struct gl_constants * consts,struct gl_extensions * extensions,struct st_config_options * options,gl_api api)715 void st_init_extensions(struct pipe_screen *screen,
716 struct gl_constants *consts,
717 struct gl_extensions *extensions,
718 struct st_config_options *options,
719 gl_api api)
720 {
721 unsigned i;
722 GLboolean *extension_table = (GLboolean *) extensions;
723
724 static const struct st_extension_cap_mapping cap_mapping[] = {
725 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
726 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
727 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
728 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
729 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
730 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
731 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
732 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
733 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
734 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
735 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
736 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
737 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
738 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
739 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
740 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
741 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
742 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
743 { o(ARB_gl_spirv), PIPE_CAP_GL_SPIRV },
744 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
745 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
746 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
747 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
748 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
749 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
750 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
751 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
752 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
753 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
754 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
755 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
756 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
757 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
758 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
759 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
760 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
761 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
762 { o(EXT_shader_image_load_formatted), PIPE_CAP_IMAGE_LOAD_FORMATTED },
763 { o(EXT_shader_image_load_store), PIPE_CAP_TGSI_ATOMINC_WRAP },
764 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
765 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
766 { o(ARB_shader_texture_lod), PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD },
767 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
768 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
769 { o(ARB_spirv_extensions), PIPE_CAP_GL_SPIRV },
770 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
771 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
772 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
773 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
774 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
775 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
776 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
777 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
778 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
779 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
780 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
781 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
782 { o(ARB_fragment_shader_interlock), PIPE_CAP_FRAGMENT_SHADER_INTERLOCK },
783
784 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
785 { o(EXT_demote_to_helper_invocation), PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION },
786 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
787 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
788 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
789 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
790 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
791 { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT },
792 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
793 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
794 { o(EXT_shader_samples_identical), PIPE_CAP_SHADER_SAMPLES_IDENTICAL },
795 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
796 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
797 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
798 { o(EXT_texture_shadow_lod), PIPE_CAP_TEXTURE_SHADOW_LOD },
799 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
800 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
801 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
802
803 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
804 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
805 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
806 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
807 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
808 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
809 { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
810 { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX },
811 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
812 { o(NV_alpha_to_coverage_dither_control), PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL },
813 { o(NV_compute_shader_derivatives), PIPE_CAP_COMPUTE_SHADER_DERIVATIVES },
814 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
815 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
816 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
817 { o(NV_shader_atomic_float), PIPE_CAP_TGSI_ATOMFADD },
818 { o(NV_shader_atomic_int64), PIPE_CAP_SHADER_ATOMIC_INT64 },
819 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
820 { o(NV_viewport_array2), PIPE_CAP_VIEWPORT_MASK },
821 { o(NV_viewport_swizzle), PIPE_CAP_VIEWPORT_SWIZZLE },
822 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
823 /* GL_NV_point_sprite is not supported by gallium because we don't
824 * support the GL_POINT_SPRITE_R_MODE_NV option. */
825
826 { o(OES_standard_derivatives), PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES },
827 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
828 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
829 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
830 { o(INTEL_blackhole_render), PIPE_CAP_FRONTEND_NOOP, },
831 };
832
833 /* Required: render target and sampler support */
834 static const struct st_extension_format_mapping rendertarget_mapping[] = {
835 { { o(OES_texture_float) },
836 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
837
838 { { o(OES_texture_half_float) },
839 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
840
841 { { o(ARB_texture_rgb10_a2ui) },
842 { PIPE_FORMAT_R10G10B10A2_UINT,
843 PIPE_FORMAT_B10G10R10A2_UINT },
844 GL_TRUE }, /* at least one format must be supported */
845
846 { { o(EXT_sRGB) },
847 { PIPE_FORMAT_A8B8G8R8_SRGB,
848 PIPE_FORMAT_B8G8R8A8_SRGB,
849 PIPE_FORMAT_R8G8B8A8_SRGB },
850 GL_TRUE }, /* at least one format must be supported */
851
852 { { o(EXT_packed_float) },
853 { PIPE_FORMAT_R11G11B10_FLOAT } },
854
855 { { o(EXT_texture_integer) },
856 { PIPE_FORMAT_R32G32B32A32_UINT,
857 PIPE_FORMAT_R32G32B32A32_SINT } },
858
859 { { o(ARB_texture_rg) },
860 { PIPE_FORMAT_R8_UNORM,
861 PIPE_FORMAT_R8G8_UNORM } },
862
863 { { o(EXT_texture_norm16) },
864 { PIPE_FORMAT_R16_UNORM,
865 PIPE_FORMAT_R16G16_UNORM,
866 PIPE_FORMAT_R16G16B16A16_UNORM } },
867
868 { { o(EXT_render_snorm) },
869 { PIPE_FORMAT_R8_SNORM,
870 PIPE_FORMAT_R8G8_SNORM,
871 PIPE_FORMAT_R8G8B8A8_SNORM,
872 PIPE_FORMAT_R16_SNORM,
873 PIPE_FORMAT_R16G16_SNORM,
874 PIPE_FORMAT_R16G16B16A16_SNORM } },
875
876 { { o(EXT_color_buffer_half_float) },
877 { PIPE_FORMAT_R16_FLOAT,
878 PIPE_FORMAT_R16G16_FLOAT,
879 PIPE_FORMAT_R16G16B16X16_FLOAT,
880 PIPE_FORMAT_R16G16B16A16_FLOAT } },
881 };
882
883 /* Required: render target, sampler, and blending */
884 static const struct st_extension_format_mapping rt_blendable[] = {
885 { { o(EXT_float_blend) },
886 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
887 };
888
889 /* Required: depth stencil and sampler support */
890 static const struct st_extension_format_mapping depthstencil_mapping[] = {
891 { { o(ARB_depth_buffer_float) },
892 { PIPE_FORMAT_Z32_FLOAT,
893 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
894 };
895
896 /* Required: sampler support */
897 static const struct st_extension_format_mapping texture_mapping[] = {
898 { { o(ARB_texture_compression_rgtc) },
899 { PIPE_FORMAT_RGTC1_UNORM,
900 PIPE_FORMAT_RGTC1_SNORM,
901 PIPE_FORMAT_RGTC2_UNORM,
902 PIPE_FORMAT_RGTC2_SNORM } },
903
904 { { o(EXT_texture_compression_latc) },
905 { PIPE_FORMAT_LATC1_UNORM,
906 PIPE_FORMAT_LATC1_SNORM,
907 PIPE_FORMAT_LATC2_UNORM,
908 PIPE_FORMAT_LATC2_SNORM } },
909
910 { { o(EXT_texture_compression_s3tc),
911 o(ANGLE_texture_compression_dxt) },
912 { PIPE_FORMAT_DXT1_RGB,
913 PIPE_FORMAT_DXT1_RGBA,
914 PIPE_FORMAT_DXT3_RGBA,
915 PIPE_FORMAT_DXT5_RGBA } },
916
917 { { o(EXT_texture_compression_s3tc_srgb) },
918 { PIPE_FORMAT_DXT1_SRGB,
919 PIPE_FORMAT_DXT1_SRGBA,
920 PIPE_FORMAT_DXT3_SRGBA,
921 PIPE_FORMAT_DXT5_SRGBA } },
922
923 { { o(ARB_texture_compression_bptc) },
924 { PIPE_FORMAT_BPTC_RGBA_UNORM,
925 PIPE_FORMAT_BPTC_SRGBA,
926 PIPE_FORMAT_BPTC_RGB_FLOAT,
927 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
928
929 { { o(TDFX_texture_compression_FXT1) },
930 { PIPE_FORMAT_FXT1_RGB,
931 PIPE_FORMAT_FXT1_RGBA } },
932
933 { { o(KHR_texture_compression_astc_ldr),
934 o(KHR_texture_compression_astc_sliced_3d) },
935 { PIPE_FORMAT_ASTC_4x4,
936 PIPE_FORMAT_ASTC_5x4,
937 PIPE_FORMAT_ASTC_5x5,
938 PIPE_FORMAT_ASTC_6x5,
939 PIPE_FORMAT_ASTC_6x6,
940 PIPE_FORMAT_ASTC_8x5,
941 PIPE_FORMAT_ASTC_8x6,
942 PIPE_FORMAT_ASTC_8x8,
943 PIPE_FORMAT_ASTC_10x5,
944 PIPE_FORMAT_ASTC_10x6,
945 PIPE_FORMAT_ASTC_10x8,
946 PIPE_FORMAT_ASTC_10x10,
947 PIPE_FORMAT_ASTC_12x10,
948 PIPE_FORMAT_ASTC_12x12,
949 PIPE_FORMAT_ASTC_4x4_SRGB,
950 PIPE_FORMAT_ASTC_5x4_SRGB,
951 PIPE_FORMAT_ASTC_5x5_SRGB,
952 PIPE_FORMAT_ASTC_6x5_SRGB,
953 PIPE_FORMAT_ASTC_6x6_SRGB,
954 PIPE_FORMAT_ASTC_8x5_SRGB,
955 PIPE_FORMAT_ASTC_8x6_SRGB,
956 PIPE_FORMAT_ASTC_8x8_SRGB,
957 PIPE_FORMAT_ASTC_10x5_SRGB,
958 PIPE_FORMAT_ASTC_10x6_SRGB,
959 PIPE_FORMAT_ASTC_10x8_SRGB,
960 PIPE_FORMAT_ASTC_10x10_SRGB,
961 PIPE_FORMAT_ASTC_12x10_SRGB,
962 PIPE_FORMAT_ASTC_12x12_SRGB } },
963
964 /* ASTC software fallback support. */
965 { { o(KHR_texture_compression_astc_ldr),
966 o(KHR_texture_compression_astc_sliced_3d) },
967 { PIPE_FORMAT_R8G8B8A8_UNORM,
968 PIPE_FORMAT_R8G8B8A8_SRGB } },
969
970 { { o(EXT_texture_shared_exponent) },
971 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
972
973 { { o(EXT_texture_snorm) },
974 { PIPE_FORMAT_R8G8B8A8_SNORM } },
975
976 { { o(EXT_texture_sRGB),
977 o(EXT_texture_sRGB_decode) },
978 { PIPE_FORMAT_A8B8G8R8_SRGB,
979 PIPE_FORMAT_B8G8R8A8_SRGB,
980 PIPE_FORMAT_A8R8G8B8_SRGB,
981 PIPE_FORMAT_R8G8B8A8_SRGB},
982 GL_TRUE }, /* at least one format must be supported */
983
984 { { o(EXT_texture_sRGB_R8) },
985 { PIPE_FORMAT_R8_SRGB },
986 GL_TRUE },
987
988 { { o(EXT_texture_type_2_10_10_10_REV) },
989 { PIPE_FORMAT_R10G10B10A2_UNORM,
990 PIPE_FORMAT_B10G10R10A2_UNORM },
991 GL_TRUE }, /* at least one format must be supported */
992
993 { { o(ATI_texture_compression_3dc) },
994 { PIPE_FORMAT_LATC2_UNORM } },
995
996 { { o(MESA_ycbcr_texture) },
997 { PIPE_FORMAT_UYVY,
998 PIPE_FORMAT_YUYV },
999 GL_TRUE }, /* at least one format must be supported */
1000
1001 { { o(OES_compressed_ETC1_RGB8_texture) },
1002 { PIPE_FORMAT_ETC1_RGB8,
1003 PIPE_FORMAT_R8G8B8A8_UNORM },
1004 GL_TRUE }, /* at least one format must be supported */
1005
1006 { { o(ARB_stencil_texturing),
1007 o(ARB_texture_stencil8) },
1008 { PIPE_FORMAT_X24S8_UINT,
1009 PIPE_FORMAT_S8X24_UINT },
1010 GL_TRUE }, /* at least one format must be supported */
1011
1012 { { o(AMD_compressed_ATC_texture) },
1013 { PIPE_FORMAT_ATC_RGB,
1014 PIPE_FORMAT_ATC_RGBA_EXPLICIT,
1015 PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
1016 };
1017
1018 /* Required: vertex fetch support. */
1019 static const struct st_extension_format_mapping vertex_mapping[] = {
1020 { { o(EXT_vertex_array_bgra) },
1021 { PIPE_FORMAT_B8G8R8A8_UNORM } },
1022 { { o(ARB_vertex_type_2_10_10_10_rev) },
1023 { PIPE_FORMAT_R10G10B10A2_UNORM,
1024 PIPE_FORMAT_B10G10R10A2_UNORM,
1025 PIPE_FORMAT_R10G10B10A2_SNORM,
1026 PIPE_FORMAT_B10G10R10A2_SNORM,
1027 PIPE_FORMAT_R10G10B10A2_USCALED,
1028 PIPE_FORMAT_B10G10R10A2_USCALED,
1029 PIPE_FORMAT_R10G10B10A2_SSCALED,
1030 PIPE_FORMAT_B10G10R10A2_SSCALED } },
1031 { { o(ARB_vertex_type_10f_11f_11f_rev) },
1032 { PIPE_FORMAT_R11G11B10_FLOAT } },
1033 };
1034
1035 static const struct st_extension_format_mapping tbo_rgb32[] = {
1036 { {o(ARB_texture_buffer_object_rgb32) },
1037 { PIPE_FORMAT_R32G32B32_FLOAT,
1038 PIPE_FORMAT_R32G32B32_UINT,
1039 PIPE_FORMAT_R32G32B32_SINT,
1040 } },
1041 };
1042
1043 /*
1044 * Extensions that are supported by all Gallium drivers:
1045 */
1046 extensions->ARB_ES2_compatibility = GL_TRUE;
1047 extensions->ARB_depth_texture = GL_TRUE;
1048 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
1049 extensions->ARB_explicit_attrib_location = GL_TRUE;
1050 extensions->ARB_explicit_uniform_location = GL_TRUE;
1051 extensions->ARB_fragment_coord_conventions = GL_TRUE;
1052 extensions->ARB_fragment_program = GL_TRUE;
1053 extensions->ARB_fragment_shader = GL_TRUE;
1054 extensions->ARB_half_float_vertex = GL_TRUE;
1055 extensions->ARB_internalformat_query = GL_TRUE;
1056 extensions->ARB_internalformat_query2 = GL_TRUE;
1057 extensions->ARB_map_buffer_range = GL_TRUE;
1058 extensions->ARB_sync = GL_TRUE;
1059 extensions->ARB_texture_border_clamp = GL_TRUE;
1060 extensions->ARB_texture_cube_map = GL_TRUE;
1061 extensions->ARB_texture_env_combine = GL_TRUE;
1062 extensions->ARB_texture_env_crossbar = GL_TRUE;
1063 extensions->ARB_texture_env_dot3 = GL_TRUE;
1064 extensions->ARB_vertex_program = GL_TRUE;
1065 extensions->ARB_vertex_shader = GL_TRUE;
1066
1067 extensions->EXT_blend_color = GL_TRUE;
1068 extensions->EXT_blend_func_separate = GL_TRUE;
1069 extensions->EXT_blend_minmax = GL_TRUE;
1070 extensions->EXT_EGL_image_storage = GL_TRUE;
1071 extensions->EXT_gpu_program_parameters = GL_TRUE;
1072 extensions->EXT_pixel_buffer_object = GL_TRUE;
1073 extensions->EXT_point_parameters = GL_TRUE;
1074 extensions->EXT_provoking_vertex = GL_TRUE;
1075 extensions->EXT_stencil_two_side = GL_TRUE;
1076 extensions->EXT_texture_env_dot3 = GL_TRUE;
1077
1078 extensions->ATI_fragment_shader = GL_TRUE;
1079 extensions->ATI_texture_env_combine3 = GL_TRUE;
1080
1081 extensions->MESA_framebuffer_flip_y = GL_TRUE;
1082
1083 extensions->NV_copy_image = GL_TRUE;
1084 extensions->NV_fog_distance = GL_TRUE;
1085 extensions->NV_texture_env_combine4 = GL_TRUE;
1086 extensions->NV_texture_rectangle = GL_TRUE;
1087
1088 extensions->OES_EGL_image = GL_TRUE;
1089 extensions->OES_EGL_image_external = GL_TRUE;
1090 extensions->OES_draw_texture = GL_TRUE;
1091
1092 /* Expose the extensions which directly correspond to gallium caps. */
1093 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
1094 if (screen->get_param(screen, cap_mapping[i].cap)) {
1095 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
1096 }
1097 }
1098
1099 /* Expose the extensions which directly correspond to gallium formats. */
1100 init_format_extensions(screen, extensions, rendertarget_mapping,
1101 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1102 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1103 init_format_extensions(screen, extensions, rt_blendable,
1104 ARRAY_SIZE(rt_blendable), PIPE_TEXTURE_2D,
1105 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
1106 PIPE_BIND_BLENDABLE);
1107 init_format_extensions(screen, extensions, depthstencil_mapping,
1108 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1109 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1110 init_format_extensions(screen, extensions, texture_mapping,
1111 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1112 PIPE_BIND_SAMPLER_VIEW);
1113 init_format_extensions(screen, extensions, vertex_mapping,
1114 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1115 PIPE_BIND_VERTEX_BUFFER);
1116
1117 /* Figure out GLSL support and set GLSLVersion to it. */
1118 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1119 consts->GLSLVersionCompat =
1120 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1121
1122 const unsigned ESSLVersion =
1123 screen->get_param(screen, PIPE_CAP_ESSL_FEATURE_LEVEL);
1124 const unsigned GLSLVersion =
1125 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1126 consts->GLSLVersion;
1127
1128 _mesa_override_glsl_version(consts);
1129
1130 if (options->force_glsl_version > 0 &&
1131 options->force_glsl_version <= GLSLVersion) {
1132 consts->ForceGLSLVersion = options->force_glsl_version;
1133 }
1134
1135 consts->AllowExtraPPTokens = options->allow_extra_pp_tokens;
1136
1137 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1138
1139 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1140
1141 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1142
1143 consts->dri_config_options_sha1 = options->config_options_sha1;
1144
1145 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1146
1147 consts->PrimitiveRestartFixedIndex =
1148 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX);
1149
1150 /* Technically we are turning on the EXT_gpu_shader5 extension,
1151 * ARB_gpu_shader5 does not exist in GLES, but this flag is what
1152 * switches on EXT_gpu_shader5:
1153 */
1154 if (api == API_OPENGLES2 && ESSLVersion >= 320)
1155 extensions->ARB_gpu_shader5 = GL_TRUE;
1156
1157 if (GLSLVersion >= 400 && !options->disable_arb_gpu_shader5)
1158 extensions->ARB_gpu_shader5 = GL_TRUE;
1159 if (GLSLVersion >= 410)
1160 extensions->ARB_shader_precision = GL_TRUE;
1161
1162 /* This extension needs full OpenGL 3.2, but we don't know if that's
1163 * supported at this point. Only check the GLSL version. */
1164 if (GLSLVersion >= 150 &&
1165 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1166 extensions->AMD_vertex_shader_layer = GL_TRUE;
1167 }
1168
1169 if (GLSLVersion >= 140) {
1170 /* Since GLSL 1.40 has support for all of the features of gpu_shader4,
1171 * we can always expose it if the driver can do 140. Supporting
1172 * gpu_shader4 on drivers without GLSL 1.40 is left for a future
1173 * pipe cap.
1174 */
1175 extensions->EXT_gpu_shader4 = GL_TRUE;
1176 extensions->EXT_texture_buffer_object = GL_TRUE;
1177
1178 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1179 extensions->ARB_enhanced_layouts = GL_TRUE;
1180 }
1181
1182 if (GLSLVersion >= 130) {
1183 consts->NativeIntegers = GL_TRUE;
1184 consts->MaxClipPlanes = 8;
1185
1186 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1187 consts->VertexID_is_zero_based = GL_TRUE;
1188 }
1189
1190 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1191 extensions->ARB_conservative_depth = GL_TRUE;
1192 extensions->ARB_shading_language_packing = GL_TRUE;
1193 extensions->OES_depth_texture_cube_map = GL_TRUE;
1194 extensions->ARB_shading_language_420pack = GL_TRUE;
1195 extensions->ARB_texture_query_levels = GL_TRUE;
1196
1197 extensions->ARB_shader_bit_encoding = GL_TRUE;
1198
1199 extensions->EXT_shader_integer_mix = GL_TRUE;
1200 extensions->ARB_arrays_of_arrays = GL_TRUE;
1201 extensions->MESA_shader_integer_functions = GL_TRUE;
1202
1203 if (screen->get_param(screen, PIPE_CAP_OPENCL_INTEGER_FUNCTIONS) &&
1204 screen->get_param(screen, PIPE_CAP_INTEGER_MULTIPLY_32X16)) {
1205 extensions->INTEL_shader_integer_functions2 = GL_TRUE;
1206 }
1207 } else {
1208 /* Optional integer support for GLSL 1.2. */
1209 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1210 PIPE_SHADER_CAP_INTEGERS) &&
1211 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1212 PIPE_SHADER_CAP_INTEGERS)) {
1213 consts->NativeIntegers = GL_TRUE;
1214
1215 extensions->EXT_shader_integer_mix = GL_TRUE;
1216 }
1217
1218 /* Integer textures make no sense before GLSL 1.30 */
1219 extensions->EXT_texture_integer = GL_FALSE;
1220 }
1221
1222 if (options->glsl_zero_init) {
1223 consts->GLSLZeroInit = 1;
1224 } else {
1225 consts->GLSLZeroInit = screen->get_param(screen, PIPE_CAP_GLSL_ZERO_INIT);
1226 }
1227
1228 consts->ForceGLNamesReuse = options->force_gl_names_reuse;
1229
1230 consts->ForceIntegerTexNearest = options->force_integer_tex_nearest;
1231
1232 consts->VendorOverride = options->force_gl_vendor;
1233
1234 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1235
1236 /* Below are the cases which cannot be moved into tables easily. */
1237
1238 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1239 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1240 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1241 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1242 extensions->ARB_tessellation_shader = GL_TRUE;
1243 }
1244
1245 /* What this is really checking for is the ability to support multiple
1246 * invocations of a geometry shader. There is no separate cap for that, so
1247 * we check the GLSLVersion.
1248 */
1249 if ((GLSLVersion >= 400 || ESSLVersion >= 310) &&
1250 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1251 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1252 extensions->OES_geometry_shader = GL_TRUE;
1253 }
1254
1255 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1256 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1257 */
1258 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1259 extensions->ARB_gpu_shader5;
1260
1261 /* Maximum sample count. */
1262 {
1263 static const enum pipe_format color_formats[] = {
1264 PIPE_FORMAT_R8G8B8A8_UNORM,
1265 PIPE_FORMAT_B8G8R8A8_UNORM,
1266 PIPE_FORMAT_A8R8G8B8_UNORM,
1267 PIPE_FORMAT_A8B8G8R8_UNORM,
1268 };
1269 static const enum pipe_format depth_formats[] = {
1270 PIPE_FORMAT_Z16_UNORM,
1271 PIPE_FORMAT_Z24X8_UNORM,
1272 PIPE_FORMAT_X8Z24_UNORM,
1273 PIPE_FORMAT_Z32_UNORM,
1274 PIPE_FORMAT_Z32_FLOAT
1275 };
1276 static const enum pipe_format int_formats[] = {
1277 PIPE_FORMAT_R8G8B8A8_SINT
1278 };
1279 static const enum pipe_format void_formats[] = {
1280 PIPE_FORMAT_NONE
1281 };
1282
1283 consts->MaxSamples =
1284 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1285 color_formats, 16,
1286 PIPE_BIND_RENDER_TARGET);
1287
1288 consts->MaxImageSamples =
1289 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1290 color_formats, 16,
1291 PIPE_BIND_SHADER_IMAGE);
1292
1293 consts->MaxColorTextureSamples =
1294 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1295 color_formats, consts->MaxSamples,
1296 PIPE_BIND_SAMPLER_VIEW);
1297
1298 consts->MaxDepthTextureSamples =
1299 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1300 depth_formats, consts->MaxSamples,
1301 PIPE_BIND_SAMPLER_VIEW);
1302
1303 consts->MaxIntegerSamples =
1304 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1305 int_formats, consts->MaxSamples,
1306 PIPE_BIND_SAMPLER_VIEW);
1307
1308 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1309 consts->MaxFramebufferSamples =
1310 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1311 void_formats, 32,
1312 PIPE_BIND_RENDER_TARGET);
1313
1314 if (extensions->AMD_framebuffer_multisample_advanced) {
1315 /* AMD_framebuffer_multisample_advanced */
1316 /* This can be greater than storage samples. */
1317 consts->MaxColorFramebufferSamples =
1318 get_max_samples_for_formats_advanced(screen,
1319 ARRAY_SIZE(color_formats),
1320 color_formats, 16,
1321 consts->MaxSamples,
1322 PIPE_BIND_RENDER_TARGET);
1323
1324 /* If the driver supports N color samples, it means it supports
1325 * N samples and N storage samples. N samples >= N storage
1326 * samples.
1327 */
1328 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1329 consts->MaxDepthStencilFramebufferSamples =
1330 consts->MaxDepthTextureSamples;
1331
1332 assert(consts->MaxColorFramebufferSamples >=
1333 consts->MaxDepthStencilFramebufferSamples);
1334 assert(consts->MaxDepthStencilFramebufferSamples >=
1335 consts->MaxColorFramebufferStorageSamples);
1336
1337 consts->NumSupportedMultisampleModes = 0;
1338
1339 unsigned depth_samples_supported = 0;
1340
1341 for (unsigned samples = 2;
1342 samples <= consts->MaxDepthStencilFramebufferSamples;
1343 samples++) {
1344 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1345 PIPE_TEXTURE_2D, samples, samples,
1346 PIPE_BIND_DEPTH_STENCIL))
1347 depth_samples_supported |= 1 << samples;
1348 }
1349
1350 for (unsigned samples = 2;
1351 samples <= consts->MaxColorFramebufferSamples;
1352 samples++) {
1353 for (unsigned depth_samples = 2;
1354 depth_samples <= samples; depth_samples++) {
1355 if (!(depth_samples_supported & (1 << depth_samples)))
1356 continue;
1357
1358 for (unsigned storage_samples = 2;
1359 storage_samples <= depth_samples; storage_samples++) {
1360 if (screen->is_format_supported(screen,
1361 PIPE_FORMAT_R8G8B8A8_UNORM,
1362 PIPE_TEXTURE_2D,
1363 samples,
1364 storage_samples,
1365 PIPE_BIND_RENDER_TARGET)) {
1366 unsigned i = consts->NumSupportedMultisampleModes;
1367
1368 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1369 consts->SupportedMultisampleModes[i].NumColorSamples =
1370 samples;
1371 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1372 storage_samples;
1373 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1374 depth_samples;
1375 consts->NumSupportedMultisampleModes++;
1376 }
1377 }
1378 }
1379 }
1380 }
1381 }
1382
1383 if (consts->MaxSamples >= 2) {
1384 /* Real MSAA support */
1385 extensions->EXT_framebuffer_multisample = GL_TRUE;
1386 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1387 }
1388 else if (consts->MaxSamples > 0 &&
1389 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1390 /* fake MSAA support */
1391 consts->FakeSWMSAA = GL_TRUE;
1392 extensions->EXT_framebuffer_multisample = GL_TRUE;
1393 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1394 extensions->ARB_texture_multisample = GL_TRUE;
1395 }
1396
1397 if (consts->MaxDualSourceDrawBuffers > 0 &&
1398 !options->disable_blend_func_extended)
1399 extensions->ARB_blend_func_extended = GL_TRUE;
1400
1401 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1402 extensions->ARB_timer_query) {
1403 extensions->EXT_timer_query = GL_TRUE;
1404 }
1405
1406 if (extensions->ARB_transform_feedback2 &&
1407 extensions->ARB_draw_instanced) {
1408 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1409 }
1410 if (options->force_glsl_extensions_warn)
1411 consts->ForceGLSLExtensionsWarn = 1;
1412
1413 if (options->disable_glsl_line_continuations)
1414 consts->DisableGLSLLineContinuations = 1;
1415
1416 if (options->allow_glsl_extension_directive_midshader)
1417 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1418
1419 if (options->allow_glsl_120_subset_in_110)
1420 consts->AllowGLSL120SubsetIn110 = GL_TRUE;
1421
1422 if (options->allow_glsl_builtin_const_expression)
1423 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1424
1425 if (options->allow_glsl_relaxed_es)
1426 consts->AllowGLSLRelaxedES = GL_TRUE;
1427
1428 consts->MinMapBufferAlignment =
1429 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1430
1431 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1432 if (api == API_OPENGL_COMPAT &&
1433 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1434 extensions->ARB_texture_buffer_object = GL_FALSE;
1435
1436 if (extensions->ARB_texture_buffer_object) {
1437 consts->MaxTextureBufferSize =
1438 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1439 (1u << 31) - 1);
1440 consts->TextureBufferOffsetAlignment =
1441 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1442
1443 if (consts->TextureBufferOffsetAlignment)
1444 extensions->ARB_texture_buffer_range = GL_TRUE;
1445
1446 init_format_extensions(screen, extensions, tbo_rgb32,
1447 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1448 PIPE_BIND_SAMPLER_VIEW);
1449 }
1450
1451 extensions->OES_texture_buffer =
1452 extensions->ARB_texture_buffer_object &&
1453 extensions->ARB_texture_buffer_range &&
1454 extensions->ARB_texture_buffer_object_rgb32 &&
1455 extensions->ARB_shader_image_load_store;
1456
1457 extensions->EXT_framebuffer_sRGB =
1458 screen->get_param(screen, PIPE_CAP_DEST_SURFACE_SRGB_CONTROL) &&
1459 extensions->EXT_sRGB;
1460
1461 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1462 * If the number of available texture indirections is very limited, then we
1463 * prefer to disable varying packing rather than run the risk of varying
1464 * packing preventing a shader from running.
1465 */
1466 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1467 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1468 /* We can't disable varying packing if transform feedback is available,
1469 * because transform feedback code assumes a packed varying layout.
1470 */
1471 if (!extensions->EXT_transform_feedback)
1472 consts->DisableVaryingPacking = GL_TRUE;
1473 }
1474
1475 if (!screen->get_param(screen, PIPE_CAP_PACKED_STREAM_OUTPUT))
1476 consts->DisableTransformFeedbackPacking = GL_TRUE;
1477
1478 unsigned max_fb_fetch_rts = screen->get_param(screen, PIPE_CAP_FBFETCH);
1479 bool coherent_fb_fetch =
1480 screen->get_param(screen, PIPE_CAP_FBFETCH_COHERENT);
1481
1482 if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_ADVANCED))
1483 extensions->KHR_blend_equation_advanced = true;
1484
1485 if (max_fb_fetch_rts > 0) {
1486 extensions->KHR_blend_equation_advanced = true;
1487 extensions->KHR_blend_equation_advanced_coherent = coherent_fb_fetch;
1488
1489 if (max_fb_fetch_rts >=
1490 screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS)) {
1491 extensions->EXT_shader_framebuffer_fetch_non_coherent = true;
1492 extensions->EXT_shader_framebuffer_fetch = coherent_fb_fetch;
1493 }
1494 }
1495
1496 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1497 if (consts->MaxViewports >= 16) {
1498 if (GLSLVersion >= 400) {
1499 consts->ViewportBounds.Min = -32768.0;
1500 consts->ViewportBounds.Max = 32767.0;
1501 } else {
1502 consts->ViewportBounds.Min = -16384.0;
1503 consts->ViewportBounds.Max = 16383.0;
1504 }
1505 extensions->ARB_viewport_array = GL_TRUE;
1506 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1507 if (extensions->AMD_vertex_shader_layer)
1508 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1509 }
1510
1511 if (extensions->AMD_vertex_shader_layer &&
1512 extensions->AMD_vertex_shader_viewport_index &&
1513 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1514 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1515
1516 /* ARB_framebuffer_no_attachments */
1517 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1518 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1519 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1520 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1521 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1522
1523 /* GL_ARB_ES3_compatibility.
1524 * Check requirements for GLSL ES 3.00.
1525 */
1526 if (GLSLVersion >= 130 &&
1527 extensions->ARB_uniform_buffer_object &&
1528 (extensions->NV_primitive_restart ||
1529 consts->PrimitiveRestartFixedIndex) &&
1530 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1531 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1532 /* Requirements for ETC2 emulation. */
1533 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1534 PIPE_TEXTURE_2D, 0, 0,
1535 PIPE_BIND_SAMPLER_VIEW) &&
1536 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1537 PIPE_TEXTURE_2D, 0, 0,
1538 PIPE_BIND_SAMPLER_VIEW) &&
1539 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1540 PIPE_TEXTURE_2D, 0, 0,
1541 PIPE_BIND_SAMPLER_VIEW) &&
1542 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1543 PIPE_TEXTURE_2D, 0, 0,
1544 PIPE_BIND_SAMPLER_VIEW) &&
1545 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1546 PIPE_TEXTURE_2D, 0, 0,
1547 PIPE_BIND_SAMPLER_VIEW) &&
1548 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1549 PIPE_TEXTURE_2D, 0, 0,
1550 PIPE_BIND_SAMPLER_VIEW)) {
1551 extensions->ARB_ES3_compatibility = GL_TRUE;
1552 }
1553
1554 #ifdef HAVE_ST_VDPAU
1555 if (screen->get_video_param &&
1556 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1557 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1558 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1559 extensions->NV_vdpau_interop = GL_TRUE;
1560 }
1561 #endif
1562
1563 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1564 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1565 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1566 }
1567
1568 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1569 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1570 extensions->GREMEDY_string_marker = GL_TRUE;
1571
1572 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1573 int compute_supported_irs =
1574 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1575 PIPE_SHADER_CAP_SUPPORTED_IRS);
1576 if (compute_supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
1577 (1 << PIPE_SHADER_IR_NIR))) {
1578 enum pipe_shader_ir ir =
1579 (compute_supported_irs & PIPE_SHADER_IR_NIR) ?
1580 PIPE_SHADER_IR_NIR : PIPE_SHADER_IR_TGSI;
1581 uint64_t grid_size[3], block_size[3];
1582 uint64_t max_local_size, max_threads_per_block;
1583
1584 screen->get_compute_param(screen, ir,
1585 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1586 screen->get_compute_param(screen, ir,
1587 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1588 screen->get_compute_param(screen, ir,
1589 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1590 &max_threads_per_block);
1591 screen->get_compute_param(screen, ir,
1592 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1593 &max_local_size);
1594
1595 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1596 consts->MaxComputeSharedMemorySize = max_local_size;
1597
1598 for (i = 0; i < 3; i++) {
1599 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1600 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1601 }
1602
1603 extensions->ARB_compute_shader =
1604 extensions->ARB_shader_image_load_store &&
1605 extensions->ARB_shader_atomic_counters;
1606
1607 if (extensions->ARB_compute_shader) {
1608 uint64_t max_variable_threads_per_block = 0;
1609
1610 screen->get_compute_param(screen, ir,
1611 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1612 &max_variable_threads_per_block);
1613
1614 for (i = 0; i < 3; i++) {
1615 /* Clamp the values to avoid having a local work group size
1616 * greater than the maximum number of invocations.
1617 */
1618 consts->MaxComputeVariableGroupSize[i] =
1619 MIN2(consts->MaxComputeWorkGroupSize[i],
1620 max_variable_threads_per_block);
1621 }
1622 consts->MaxComputeVariableGroupInvocations =
1623 max_variable_threads_per_block;
1624
1625 extensions->ARB_compute_variable_group_size =
1626 max_variable_threads_per_block > 0;
1627 }
1628 }
1629 }
1630
1631 extensions->ARB_texture_float =
1632 extensions->OES_texture_half_float &&
1633 extensions->OES_texture_float;
1634
1635 if (extensions->EXT_texture_filter_anisotropic &&
1636 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1637 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1638
1639 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1640
1641 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1642 * there's no clean way of telling whether we would support ES 3.1 from
1643 * here, so copy the condition from compute_version_es2 here. A lot of
1644 * these are redunant, but simpler to just have a (near-)exact copy here.
1645 */
1646 extensions->ARB_ES3_1_compatibility =
1647 extensions->ARB_ES3_compatibility &&
1648 extensions->ARB_arrays_of_arrays &&
1649 extensions->ARB_compute_shader &&
1650 extensions->ARB_draw_indirect &&
1651 extensions->ARB_explicit_uniform_location &&
1652 extensions->ARB_framebuffer_no_attachments &&
1653 extensions->ARB_shader_atomic_counters &&
1654 extensions->ARB_shader_image_load_store &&
1655 extensions->ARB_shader_image_size &&
1656 extensions->ARB_shader_storage_buffer_object &&
1657 extensions->ARB_shading_language_packing &&
1658 extensions->ARB_stencil_texturing &&
1659 extensions->ARB_texture_multisample &&
1660 extensions->ARB_gpu_shader5 &&
1661 extensions->EXT_shader_integer_mix;
1662
1663 extensions->OES_texture_cube_map_array =
1664 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1665 extensions->OES_geometry_shader &&
1666 extensions->ARB_texture_cube_map_array;
1667
1668 extensions->OES_viewport_array =
1669 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1670 extensions->OES_geometry_shader &&
1671 extensions->ARB_viewport_array;
1672
1673 extensions->OES_primitive_bounding_box =
1674 extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310;
1675
1676 consts->NoPrimitiveBoundingBoxOutput = true;
1677
1678 extensions->ANDROID_extension_pack_es31a =
1679 extensions->KHR_texture_compression_astc_ldr &&
1680 extensions->KHR_blend_equation_advanced &&
1681 extensions->OES_sample_variables &&
1682 extensions->ARB_shader_image_load_store &&
1683 extensions->ARB_texture_stencil8 &&
1684 extensions->ARB_texture_multisample &&
1685 extensions->OES_copy_image &&
1686 extensions->ARB_draw_buffers_blend &&
1687 extensions->OES_geometry_shader &&
1688 extensions->ARB_gpu_shader5 &&
1689 extensions->OES_primitive_bounding_box &&
1690 extensions->ARB_tessellation_shader &&
1691 extensions->ARB_texture_border_clamp &&
1692 extensions->OES_texture_buffer &&
1693 extensions->OES_texture_cube_map_array &&
1694 extensions->EXT_texture_sRGB_decode;
1695
1696 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1697 * before overall versions are selected. Also it's actually a subset of ES
1698 * 3.2, since it doesn't require ASTC or advanced blending.
1699 */
1700 extensions->ARB_ES3_2_compatibility =
1701 extensions->ARB_ES3_1_compatibility &&
1702 extensions->KHR_robustness &&
1703 extensions->ARB_copy_image &&
1704 extensions->ARB_draw_buffers_blend &&
1705 extensions->ARB_draw_elements_base_vertex &&
1706 extensions->OES_geometry_shader &&
1707 extensions->ARB_gpu_shader5 &&
1708 extensions->ARB_sample_shading &&
1709 extensions->ARB_tessellation_shader &&
1710 extensions->ARB_texture_border_clamp &&
1711 extensions->OES_texture_buffer &&
1712 extensions->ARB_texture_cube_map_array &&
1713 extensions->ARB_texture_stencil8 &&
1714 extensions->ARB_texture_multisample;
1715
1716 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1717 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1718 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1719 float max_dilate;
1720 bool pre_snap_triangles, pre_snap_points_lines;
1721
1722 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1723
1724 pre_snap_triangles =
1725 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1726 pre_snap_points_lines =
1727 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1728
1729 extensions->NV_conservative_raster =
1730 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1731
1732 if (extensions->NV_conservative_raster) {
1733 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1734 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1735 extensions->NV_conservative_raster_pre_snap =
1736 pre_snap_triangles && pre_snap_points_lines;
1737 }
1738 }
1739
1740 if (extensions->ARB_gl_spirv) {
1741 struct spirv_supported_capabilities *spirv_caps = &consts->SpirVCapabilities;
1742
1743 spirv_caps->atomic_storage = extensions->ARB_shader_atomic_counters;
1744 spirv_caps->demote_to_helper_invocation = extensions->EXT_demote_to_helper_invocation;
1745 spirv_caps->draw_parameters = extensions->ARB_shader_draw_parameters;
1746 spirv_caps->float64 = extensions->ARB_gpu_shader_fp64;
1747 spirv_caps->geometry_streams = extensions->ARB_gpu_shader5;
1748 spirv_caps->image_ms_array = extensions->ARB_shader_image_load_store &&
1749 consts->MaxImageSamples > 1;
1750 spirv_caps->image_read_without_format = extensions->EXT_shader_image_load_formatted;
1751 spirv_caps->image_write_without_format = extensions->ARB_shader_image_load_store;
1752 spirv_caps->int64 = extensions->ARB_gpu_shader_int64;
1753 spirv_caps->int64_atomics = extensions->NV_shader_atomic_int64;
1754 spirv_caps->post_depth_coverage = extensions->ARB_post_depth_coverage;
1755 spirv_caps->shader_clock = extensions->ARB_shader_clock;
1756 spirv_caps->shader_viewport_index_layer = extensions->ARB_shader_viewport_layer_array;
1757 spirv_caps->stencil_export = extensions->ARB_shader_stencil_export;
1758 spirv_caps->storage_image_ms = extensions->ARB_shader_image_load_store &&
1759 consts->MaxImageSamples > 1;
1760 spirv_caps->subgroup_ballot = extensions->ARB_shader_ballot;
1761 spirv_caps->subgroup_vote = extensions->ARB_shader_group_vote;
1762 spirv_caps->tessellation = extensions->ARB_tessellation_shader;
1763 spirv_caps->transform_feedback = extensions->ARB_transform_feedback3;
1764 spirv_caps->variable_pointers =
1765 screen->get_param(screen, PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS);
1766 spirv_caps->integer_functions2 = extensions->INTEL_shader_integer_functions2;
1767
1768 consts->SpirVExtensions = CALLOC_STRUCT(spirv_supported_extensions);
1769 _mesa_fill_supported_spirv_extensions(consts->SpirVExtensions, spirv_caps);
1770 }
1771
1772 consts->AllowDrawOutOfOrder = options->allow_draw_out_of_order;
1773
1774 bool prefer_nir = PIPE_SHADER_IR_NIR ==
1775 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_PREFERRED_IR);
1776 const struct nir_shader_compiler_options *nir_options =
1777 consts->ShaderCompilerOptions[MESA_SHADER_FRAGMENT].NirOptions;
1778
1779 if (prefer_nir &&
1780 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_INTEGERS) &&
1781 extensions->ARB_stencil_texturing &&
1782 !(nir_options->lower_doubles_options & nir_lower_fp64_full_software))
1783 extensions->NV_copy_depth_to_color = TRUE;
1784 }
1785