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vbo,gallium: make glBegin/End buffer size configurable by drivers
[mesa.git] / src / mesa / state_tracker / st_extensions.c
1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * Copyright (c) 2008 VMware, Inc.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 #include "compiler/nir/nir.h"
30
31 #include "main/imports.h"
32 #include "main/context.h"
33 #include "main/macros.h"
34 #include "main/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
43 #include "st_context.h"
44 #include "st_debug.h"
45 #include "st_extensions.h"
46 #include "st_format.h"
47
48
49 /*
50 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
51 * avoid evaluating arguments (which are often function calls) more than once.
52 */
53
54 static unsigned _min(unsigned a, unsigned b)
55 {
56 return (a < b) ? a : b;
57 }
58
59 static float _maxf(float a, float b)
60 {
61 return (a > b) ? a : b;
62 }
63
64 static int _clamp(int a, int min, int max)
65 {
66 if (a < min)
67 return min;
68 else if (a > max)
69 return max;
70 else
71 return a;
72 }
73
74
75 /**
76 * Query driver to get implementation limits.
77 * Note that we have to limit/clamp against Mesa's internal limits too.
78 */
79 void st_init_limits(struct pipe_screen *screen,
80 struct gl_constants *c, struct gl_extensions *extensions)
81 {
82 int supported_irs;
83 unsigned sh;
84 bool can_ubo = true;
85 int temp;
86
87 c->MaxTextureSize = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
88 c->MaxTextureSize = MIN2(c->MaxTextureSize, 1 << (MAX_TEXTURE_LEVELS - 1));
89
90 c->Max3DTextureLevels
91 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
92 MAX_3D_TEXTURE_LEVELS);
93
94 c->MaxCubeTextureLevels
95 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
96 MAX_CUBE_TEXTURE_LEVELS);
97
98 c->MaxTextureRectSize = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
99
100 c->MaxArrayTextureLayers
101 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
102
103 /* Define max viewport size and max renderbuffer size in terms of
104 * max texture size (note: max tex RECT size = max tex 2D size).
105 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
106 */
107 c->MaxViewportWidth =
108 c->MaxViewportHeight =
109 c->MaxRenderbufferSize = c->MaxTextureRectSize;
110
111 c->SubPixelBits =
112 screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
113 c->ViewportSubpixelBits =
114 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
115
116 c->MaxDrawBuffers = c->MaxColorAttachments =
117 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
118 1, MAX_DRAW_BUFFERS);
119
120 c->MaxDualSourceDrawBuffers =
121 _clamp(screen->get_param(screen,
122 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
123 0, MAX_DRAW_BUFFERS);
124
125 c->MaxLineWidth =
126 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
127 c->MaxLineWidthAA =
128 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
129
130 c->MaxPointSize =
131 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
132 c->MaxPointSizeAA =
133 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
134
135 c->MinPointSize = 1.0f;
136 c->MinPointSizeAA = 1.0f;
137
138 c->MaxTextureMaxAnisotropy =
139 _maxf(2.0f,
140 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
141
142 c->MaxTextureLodBias =
143 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
144
145 c->QuadsFollowProvokingVertexConvention =
146 screen->get_param(screen,
147 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
148
149 c->MaxUniformBlockSize =
150 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
151 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
152 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
153 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
154 */
155 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
156
157 if (c->MaxUniformBlockSize < 16384) {
158 can_ubo = false;
159 }
160
161 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
162 struct gl_shader_compiler_options *options;
163 struct gl_program_constants *pc;
164 const nir_shader_compiler_options *nir_options = NULL;
165
166 bool prefer_nir = PIPE_SHADER_IR_NIR ==
167 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);
168
169 if (screen->get_compiler_options && prefer_nir) {
170 nir_options = (const nir_shader_compiler_options *)
171 screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
172 }
173
174 const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
175 pc = &c->Program[stage];
176 options = &c->ShaderCompilerOptions[stage];
177 c->ShaderCompilerOptions[stage].NirOptions = nir_options;
178
179 if (sh == PIPE_SHADER_COMPUTE) {
180 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
181 continue;
182 supported_irs =
183 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
184 if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
185 (1 << PIPE_SHADER_IR_NIR))))
186 continue;
187 }
188
189 pc->MaxTextureImageUnits =
190 _min(screen->get_shader_param(screen, sh,
191 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
192 MAX_TEXTURE_IMAGE_UNITS);
193
194 pc->MaxInstructions =
195 pc->MaxNativeInstructions =
196 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
197 pc->MaxAluInstructions =
198 pc->MaxNativeAluInstructions =
199 screen->get_shader_param(screen, sh,
200 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
201 pc->MaxTexInstructions =
202 pc->MaxNativeTexInstructions =
203 screen->get_shader_param(screen, sh,
204 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
205 pc->MaxTexIndirections =
206 pc->MaxNativeTexIndirections =
207 screen->get_shader_param(screen, sh,
208 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
209 pc->MaxAttribs =
210 pc->MaxNativeAttribs =
211 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
212 pc->MaxTemps =
213 pc->MaxNativeTemps =
214 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
215 pc->MaxAddressRegs =
216 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
217
218 pc->MaxUniformComponents =
219 screen->get_shader_param(screen, sh,
220 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
221 pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
222 MAX_UNIFORMS * 4);
223
224 /* For ARB programs, prog_src_register::Index is a signed 13-bit number.
225 * This gives us a limit of 4096 values - but we may need to generate
226 * internal values in addition to what the source program uses. So, we
227 * drop the limit one step lower, to 2048, to be safe.
228 */
229 pc->MaxParameters =
230 pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
231 pc->MaxInputComponents =
232 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
233 pc->MaxOutputComponents =
234 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
235
236
237 pc->MaxUniformBlocks =
238 screen->get_shader_param(screen, sh,
239 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
240 if (pc->MaxUniformBlocks)
241 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
242 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
243
244 pc->MaxCombinedUniformComponents =
245 pc->MaxUniformComponents +
246 (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
247
248 pc->MaxShaderStorageBlocks =
249 screen->get_shader_param(screen, sh,
250 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
251
252 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
253 if (temp) {
254 /*
255 * for separate atomic counters get the actual hw limits
256 * per stage on atomic counters and buffers
257 */
258 pc->MaxAtomicCounters = temp;
259 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
260 } else if (pc->MaxShaderStorageBlocks) {
261 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
262 /*
263 * without separate atomic counters, reserve half of the available
264 * SSBOs for atomic buffers, and the other half for normal SSBOs.
265 */
266 pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
267 pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
268 }
269 pc->MaxImageUniforms = screen->get_shader_param(
270 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
271
272 /* Gallium doesn't really care about local vs. env parameters so use the
273 * same limits.
274 */
275 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
276 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
277
278 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
279 pc->LowInt.RangeMin = 31;
280 pc->LowInt.RangeMax = 30;
281 pc->LowInt.Precision = 0;
282 pc->MediumInt = pc->HighInt = pc->LowInt;
283 }
284
285 /* TODO: make these more fine-grained if anyone needs it */
286 options->MaxIfDepth =
287 screen->get_shader_param(screen, sh,
288 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
289 options->EmitNoLoops =
290 !screen->get_shader_param(screen, sh,
291 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
292 options->EmitNoMainReturn =
293 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
294
295 options->EmitNoCont =
296 !screen->get_shader_param(screen, sh,
297 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
298
299 options->EmitNoIndirectInput =
300 !screen->get_shader_param(screen, sh,
301 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
302 options->EmitNoIndirectOutput =
303 !screen->get_shader_param(screen, sh,
304 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
305 options->EmitNoIndirectTemp =
306 !screen->get_shader_param(screen, sh,
307 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
308 options->EmitNoIndirectUniform =
309 !screen->get_shader_param(screen, sh,
310 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
311
312 if (pc->MaxNativeInstructions &&
313 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
314 can_ubo = false;
315 }
316
317 if (options->EmitNoLoops)
318 options->MaxUnrollIterations =
319 MIN2(screen->get_shader_param(screen, sh,
320 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
321 65536);
322 else
323 options->MaxUnrollIterations =
324 screen->get_shader_param(screen, sh,
325 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
326
327 if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
328 options->LowerCombinedClipCullDistance = true;
329
330 /* NIR can do the lowering on our behalf and we'll get better results
331 * because it can actually optimize SSBO access.
332 */
333 options->LowerBufferInterfaceBlocks = !prefer_nir;
334
335 if (sh == MESA_SHADER_VERTEX) {
336 if (screen->get_param(screen, PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED))
337 options->LowerBuiltinVariablesXfb |= VARYING_BIT_POS;
338 if (screen->get_param(screen, PIPE_CAP_PSIZ_CLAMPED))
339 options->LowerBuiltinVariablesXfb |= VARYING_BIT_PSIZ;
340 }
341 }
342
343 c->MaxUserAssignableUniformLocations =
344 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
345 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
346 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
347 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
348 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
349
350 c->GLSLOptimizeConservatively =
351 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
352 c->GLSLLowerConstArrays =
353 screen->get_param(screen, PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF);
354 c->GLSLTessLevelsAsInputs =
355 screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
356 c->LowerTessLevel =
357 !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
358 c->LowerCsDerivedVariables =
359 !screen->get_param(screen, PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED);
360 c->PrimitiveRestartForPatches =
361 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
362
363 c->MaxCombinedTextureImageUnits =
364 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
365 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
366 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
367 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
368 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
369 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
370 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
371
372 /* This depends on program constants. */
373 c->MaxTextureCoordUnits
374 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
375 MAX_TEXTURE_COORD_UNITS);
376
377 c->MaxTextureUnits =
378 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
379 c->MaxTextureCoordUnits);
380
381 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
382 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
383
384 c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
385 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
386 c->MaxGeometryOutputVertices =
387 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
388 c->MaxGeometryTotalOutputComponents =
389 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
390 c->MaxGeometryShaderInvocations =
391 screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
392 c->MaxTessPatchComponents =
393 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
394 MAX_VARYING) * 4;
395
396 c->MinProgramTexelOffset =
397 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
398 c->MaxProgramTexelOffset =
399 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
400
401 c->MaxProgramTextureGatherComponents =
402 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
403 c->MinProgramTextureGatherOffset =
404 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
405 c->MaxProgramTextureGatherOffset =
406 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
407
408 c->MaxTransformFeedbackBuffers =
409 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
410 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
411 MAX_FEEDBACK_BUFFERS);
412 c->MaxTransformFeedbackSeparateComponents =
413 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
414 c->MaxTransformFeedbackInterleavedComponents =
415 screen->get_param(screen,
416 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
417 c->MaxVertexStreams =
418 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
419
420 /* The vertex stream must fit into pipe_stream_output_info::stream */
421 assert(c->MaxVertexStreams <= 4);
422
423 c->MaxVertexAttribStride
424 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
425
426 /* The value cannot be larger than that since pipe_vertex_buffer::src_offset
427 * is only 16 bits.
428 */
429 temp = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET);
430 c->MaxVertexAttribRelativeOffset = MIN2(0xffff, temp);
431
432 c->StripTextureBorder = GL_TRUE;
433
434 c->GLSLSkipStrictMaxUniformLimitCheck =
435 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
436
437 c->UniformBufferOffsetAlignment =
438 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
439
440 if (can_ubo) {
441 extensions->ARB_uniform_buffer_object = GL_TRUE;
442 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
443 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
444 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
445 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
446 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
447 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
448 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
449 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
450 }
451
452 c->GLSLFragCoordIsSysVal =
453 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
454 c->GLSLPointCoordIsSysVal =
455 screen->get_param(screen, PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL);
456 c->GLSLFrontFacingIsSysVal =
457 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
458
459 /* GL_ARB_get_program_binary */
460 if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
461 c->NumProgramBinaryFormats = 1;
462
463 c->MaxAtomicBufferBindings =
464 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
465 c->MaxAtomicBufferSize =
466 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
467
468 c->MaxCombinedAtomicBuffers =
469 MIN2(screen->get_param(screen,
470 PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
471 MAX_COMBINED_ATOMIC_BUFFERS);
472 if (!c->MaxCombinedAtomicBuffers) {
473 c->MaxCombinedAtomicBuffers =
474 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
475 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
476 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
477 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
478 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
479 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
480 }
481
482 c->MaxCombinedAtomicCounters =
483 screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
484 if (!c->MaxCombinedAtomicCounters)
485 c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
486
487 if (c->MaxCombinedAtomicBuffers > 0) {
488 extensions->ARB_shader_atomic_counters = GL_TRUE;
489 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
490 }
491
492 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
493 c->ShaderStorageBufferOffsetAlignment =
494 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
495 if (c->ShaderStorageBufferOffsetAlignment) {
496 c->MaxCombinedShaderStorageBlocks =
497 MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
498 MAX_COMBINED_SHADER_STORAGE_BUFFERS);
499 if (!c->MaxCombinedShaderStorageBlocks) {
500 c->MaxCombinedShaderStorageBlocks =
501 c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
502 c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
503 c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
504 c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
505 c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
506 assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
507 }
508 c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;
509
510 c->MaxCombinedShaderOutputResources +=
511 c->MaxCombinedShaderStorageBlocks;
512 c->MaxShaderStorageBlockSize =
513 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
514 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
515 }
516
517 c->MaxCombinedImageUniforms =
518 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
519 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
520 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
521 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
522 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
523 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
524 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
525 c->MaxImageUnits = MAX_IMAGE_UNITS;
526 if (c->MaxCombinedImageUniforms) {
527 extensions->ARB_shader_image_load_store = GL_TRUE;
528 extensions->ARB_shader_image_size = GL_TRUE;
529 }
530
531 /* ARB_framebuffer_no_attachments */
532 c->MaxFramebufferWidth = c->MaxViewportWidth;
533 c->MaxFramebufferHeight = c->MaxViewportHeight;
534 /* NOTE: we cheat here a little by assuming that
535 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
536 * number of layers as we need, although we technically
537 * could have more the generality is not really useful
538 * in practicality.
539 */
540 c->MaxFramebufferLayers =
541 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
542
543 c->MaxWindowRectangles =
544 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
545
546 c->SparseBufferPageSize =
547 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
548
549 c->AllowMappedBuffersDuringExecution =
550 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
551
552 c->UseSTD430AsDefaultPacking =
553 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
554
555 c->MaxSubpixelPrecisionBiasBits =
556 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
557
558 c->ConservativeRasterDilateRange[0] =
559 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
560 c->ConservativeRasterDilateRange[1] =
561 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
562 c->ConservativeRasterDilateGranularity =
563 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
564
565 /* limit the max combined shader output resources to a driver limit */
566 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
567 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
568 c->MaxCombinedShaderOutputResources = temp;
569
570 c->VertexBufferOffsetIsInt32 =
571 screen->get_param(screen, PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET);
572
573 c->MultiDrawWithUserIndices =
574 screen->get_param(screen, PIPE_CAP_DRAW_INFO_START_WITH_USER_INDICES);
575
576 c->glBeginEndBufferSize =
577 screen->get_param(screen, PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE);
578 }
579
580
581 /**
582 * Given a member \c x of struct gl_extensions, return offset of
583 * \c x in bytes.
584 */
585 #define o(x) offsetof(struct gl_extensions, x)
586
587
588 struct st_extension_cap_mapping {
589 int extension_offset;
590 int cap;
591 };
592
593 struct st_extension_format_mapping {
594 int extension_offset[2];
595 enum pipe_format format[32];
596
597 /* If TRUE, at least one format must be supported for the extensions to be
598 * advertised. If FALSE, all the formats must be supported. */
599 GLboolean need_at_least_one;
600 };
601
602 /**
603 * Enable extensions if certain pipe formats are supported by the driver.
604 * What extensions will be enabled and what formats must be supported is
605 * described by the array of st_extension_format_mapping.
606 *
607 * target and bind_flags are passed to is_format_supported.
608 */
609 static void
610 init_format_extensions(struct pipe_screen *screen,
611 struct gl_extensions *extensions,
612 const struct st_extension_format_mapping *mapping,
613 unsigned num_mappings,
614 enum pipe_texture_target target,
615 unsigned bind_flags)
616 {
617 GLboolean *extension_table = (GLboolean *) extensions;
618 unsigned i;
619 int j;
620 int num_formats = ARRAY_SIZE(mapping->format);
621 int num_ext = ARRAY_SIZE(mapping->extension_offset);
622
623 for (i = 0; i < num_mappings; i++) {
624 int num_supported = 0;
625
626 /* Examine each format in the list. */
627 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
628 if (screen->is_format_supported(screen, mapping[i].format[j],
629 target, 0, 0, bind_flags)) {
630 num_supported++;
631 }
632 }
633
634 if (!num_supported ||
635 (!mapping[i].need_at_least_one && num_supported != j)) {
636 continue;
637 }
638
639 /* Enable all extensions in the list. */
640 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
641 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
642 }
643 }
644
645
646 /**
647 * Given a list of formats and bind flags, return the maximum number
648 * of samples supported by any of those formats.
649 */
650 static unsigned
651 get_max_samples_for_formats(struct pipe_screen *screen,
652 unsigned num_formats,
653 const enum pipe_format *formats,
654 unsigned max_samples,
655 unsigned bind)
656 {
657 unsigned i, f;
658
659 for (i = max_samples; i > 0; --i) {
660 for (f = 0; f < num_formats; f++) {
661 if (screen->is_format_supported(screen, formats[f],
662 PIPE_TEXTURE_2D, i, i, bind)) {
663 return i;
664 }
665 }
666 }
667 return 0;
668 }
669
670 static unsigned
671 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
672 unsigned num_formats,
673 const enum pipe_format *formats,
674 unsigned max_samples,
675 unsigned num_storage_samples,
676 unsigned bind)
677 {
678 unsigned i, f;
679
680 for (i = max_samples; i > 0; --i) {
681 for (f = 0; f < num_formats; f++) {
682 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
683 i, num_storage_samples, bind)) {
684 return i;
685 }
686 }
687 }
688 return 0;
689 }
690
691 /**
692 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
693 * which GL extensions are supported.
694 * Quite a few extensions are always supported because they are standard
695 * features or can be built on top of other gallium features.
696 * Some fine tuning may still be needed.
697 */
698 void st_init_extensions(struct pipe_screen *screen,
699 struct gl_constants *consts,
700 struct gl_extensions *extensions,
701 struct st_config_options *options,
702 gl_api api)
703 {
704 unsigned i;
705 GLboolean *extension_table = (GLboolean *) extensions;
706
707 static const struct st_extension_cap_mapping cap_mapping[] = {
708 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
709 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
710 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
711 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
712 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
713 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
714 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
715 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
716 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
717 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
718 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
719 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
720 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
721 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
722 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
723 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
724 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
725 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
726 { o(ARB_gl_spirv), PIPE_CAP_GL_SPIRV },
727 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
728 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
729 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
730 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
731 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
732 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
733 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
734 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
735 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
736 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
737 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
738 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
739 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
740 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
741 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
742 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
743 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
744 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
745 { o(EXT_shader_image_load_formatted), PIPE_CAP_IMAGE_LOAD_FORMATTED },
746 { o(EXT_shader_image_load_store), PIPE_CAP_TGSI_ATOMINC_WRAP },
747 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
748 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
749 { o(ARB_shader_texture_lod), PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD },
750 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
751 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
752 { o(ARB_spirv_extensions), PIPE_CAP_GL_SPIRV },
753 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
754 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
755 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
756 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
757 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
758 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
759 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
760 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
761 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
762 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
763 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
764 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
765 { o(ARB_fragment_shader_interlock), PIPE_CAP_FRAGMENT_SHADER_INTERLOCK },
766
767 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
768 { o(EXT_demote_to_helper_invocation), PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION },
769 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
770 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
771 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
772 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
773 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
774 { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT },
775 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
776 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
777 { o(EXT_shader_samples_identical), PIPE_CAP_SHADER_SAMPLES_IDENTICAL },
778 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
779 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
780 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
781 { o(EXT_texture_shadow_lod), PIPE_CAP_TEXTURE_SHADOW_LOD },
782 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
783 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
784 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
785
786 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
787 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
788 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
789 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
790 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
791 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
792 { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
793 { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX },
794 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
795 { o(NV_compute_shader_derivatives), PIPE_CAP_COMPUTE_SHADER_DERIVATIVES },
796 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
797 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
798 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
799 { o(NV_shader_atomic_float), PIPE_CAP_TGSI_ATOMFADD },
800 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
801 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
802 /* GL_NV_point_sprite is not supported by gallium because we don't
803 * support the GL_POINT_SPRITE_R_MODE_NV option. */
804
805 { o(OES_standard_derivatives), PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES },
806 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
807 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
808 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
809 { o(INTEL_blackhole_render), PIPE_CAP_FRONTEND_NOOP, },
810 };
811
812 /* Required: render target and sampler support */
813 static const struct st_extension_format_mapping rendertarget_mapping[] = {
814 { { o(OES_texture_float) },
815 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
816
817 { { o(OES_texture_half_float) },
818 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
819
820 { { o(ARB_texture_rgb10_a2ui) },
821 { PIPE_FORMAT_R10G10B10A2_UINT,
822 PIPE_FORMAT_B10G10R10A2_UINT },
823 GL_TRUE }, /* at least one format must be supported */
824
825 { { o(EXT_sRGB) },
826 { PIPE_FORMAT_A8B8G8R8_SRGB,
827 PIPE_FORMAT_B8G8R8A8_SRGB,
828 PIPE_FORMAT_R8G8B8A8_SRGB },
829 GL_TRUE }, /* at least one format must be supported */
830
831 { { o(EXT_packed_float) },
832 { PIPE_FORMAT_R11G11B10_FLOAT } },
833
834 { { o(EXT_texture_integer) },
835 { PIPE_FORMAT_R32G32B32A32_UINT,
836 PIPE_FORMAT_R32G32B32A32_SINT } },
837
838 { { o(ARB_texture_rg) },
839 { PIPE_FORMAT_R8_UNORM,
840 PIPE_FORMAT_R8G8_UNORM } },
841
842 { { o(EXT_texture_norm16) },
843 { PIPE_FORMAT_R16_UNORM,
844 PIPE_FORMAT_R16G16_UNORM,
845 PIPE_FORMAT_R16G16B16A16_UNORM } },
846
847 { { o(EXT_render_snorm) },
848 { PIPE_FORMAT_R8_SNORM,
849 PIPE_FORMAT_R8G8_SNORM,
850 PIPE_FORMAT_R8G8B8A8_SNORM,
851 PIPE_FORMAT_R16_SNORM,
852 PIPE_FORMAT_R16G16_SNORM,
853 PIPE_FORMAT_R16G16B16A16_SNORM } },
854 };
855
856 /* Required: render target, sampler, and blending */
857 static const struct st_extension_format_mapping rt_blendable[] = {
858 { { o(EXT_float_blend) },
859 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
860 };
861
862 /* Required: depth stencil and sampler support */
863 static const struct st_extension_format_mapping depthstencil_mapping[] = {
864 { { o(ARB_depth_buffer_float) },
865 { PIPE_FORMAT_Z32_FLOAT,
866 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
867 };
868
869 /* Required: sampler support */
870 static const struct st_extension_format_mapping texture_mapping[] = {
871 { { o(ARB_texture_compression_rgtc) },
872 { PIPE_FORMAT_RGTC1_UNORM,
873 PIPE_FORMAT_RGTC1_SNORM,
874 PIPE_FORMAT_RGTC2_UNORM,
875 PIPE_FORMAT_RGTC2_SNORM } },
876
877 { { o(EXT_texture_compression_latc) },
878 { PIPE_FORMAT_LATC1_UNORM,
879 PIPE_FORMAT_LATC1_SNORM,
880 PIPE_FORMAT_LATC2_UNORM,
881 PIPE_FORMAT_LATC2_SNORM } },
882
883 { { o(EXT_texture_compression_s3tc),
884 o(ANGLE_texture_compression_dxt) },
885 { PIPE_FORMAT_DXT1_RGB,
886 PIPE_FORMAT_DXT1_RGBA,
887 PIPE_FORMAT_DXT3_RGBA,
888 PIPE_FORMAT_DXT5_RGBA } },
889
890 { { o(EXT_texture_compression_s3tc_srgb) },
891 { PIPE_FORMAT_DXT1_SRGB,
892 PIPE_FORMAT_DXT1_SRGBA,
893 PIPE_FORMAT_DXT3_SRGBA,
894 PIPE_FORMAT_DXT5_SRGBA } },
895
896 { { o(ARB_texture_compression_bptc) },
897 { PIPE_FORMAT_BPTC_RGBA_UNORM,
898 PIPE_FORMAT_BPTC_SRGBA,
899 PIPE_FORMAT_BPTC_RGB_FLOAT,
900 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
901
902 { { o(TDFX_texture_compression_FXT1) },
903 { PIPE_FORMAT_FXT1_RGB,
904 PIPE_FORMAT_FXT1_RGBA } },
905
906 { { o(KHR_texture_compression_astc_ldr),
907 o(KHR_texture_compression_astc_sliced_3d) },
908 { PIPE_FORMAT_ASTC_4x4,
909 PIPE_FORMAT_ASTC_5x4,
910 PIPE_FORMAT_ASTC_5x5,
911 PIPE_FORMAT_ASTC_6x5,
912 PIPE_FORMAT_ASTC_6x6,
913 PIPE_FORMAT_ASTC_8x5,
914 PIPE_FORMAT_ASTC_8x6,
915 PIPE_FORMAT_ASTC_8x8,
916 PIPE_FORMAT_ASTC_10x5,
917 PIPE_FORMAT_ASTC_10x6,
918 PIPE_FORMAT_ASTC_10x8,
919 PIPE_FORMAT_ASTC_10x10,
920 PIPE_FORMAT_ASTC_12x10,
921 PIPE_FORMAT_ASTC_12x12,
922 PIPE_FORMAT_ASTC_4x4_SRGB,
923 PIPE_FORMAT_ASTC_5x4_SRGB,
924 PIPE_FORMAT_ASTC_5x5_SRGB,
925 PIPE_FORMAT_ASTC_6x5_SRGB,
926 PIPE_FORMAT_ASTC_6x6_SRGB,
927 PIPE_FORMAT_ASTC_8x5_SRGB,
928 PIPE_FORMAT_ASTC_8x6_SRGB,
929 PIPE_FORMAT_ASTC_8x8_SRGB,
930 PIPE_FORMAT_ASTC_10x5_SRGB,
931 PIPE_FORMAT_ASTC_10x6_SRGB,
932 PIPE_FORMAT_ASTC_10x8_SRGB,
933 PIPE_FORMAT_ASTC_10x10_SRGB,
934 PIPE_FORMAT_ASTC_12x10_SRGB,
935 PIPE_FORMAT_ASTC_12x12_SRGB } },
936
937 /* ASTC software fallback support. */
938 { { o(KHR_texture_compression_astc_ldr),
939 o(KHR_texture_compression_astc_sliced_3d) },
940 { PIPE_FORMAT_R8G8B8A8_UNORM,
941 PIPE_FORMAT_R8G8B8A8_SRGB } },
942
943 { { o(EXT_texture_shared_exponent) },
944 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
945
946 { { o(EXT_texture_snorm) },
947 { PIPE_FORMAT_R8G8B8A8_SNORM } },
948
949 { { o(EXT_texture_sRGB),
950 o(EXT_texture_sRGB_decode) },
951 { PIPE_FORMAT_A8B8G8R8_SRGB,
952 PIPE_FORMAT_B8G8R8A8_SRGB,
953 PIPE_FORMAT_A8R8G8B8_SRGB,
954 PIPE_FORMAT_R8G8B8A8_SRGB},
955 GL_TRUE }, /* at least one format must be supported */
956
957 { { o(EXT_texture_sRGB_R8) },
958 { PIPE_FORMAT_R8_SRGB },
959 GL_TRUE },
960
961 { { o(EXT_texture_type_2_10_10_10_REV) },
962 { PIPE_FORMAT_R10G10B10A2_UNORM,
963 PIPE_FORMAT_B10G10R10A2_UNORM },
964 GL_TRUE }, /* at least one format must be supported */
965
966 { { o(ATI_texture_compression_3dc) },
967 { PIPE_FORMAT_LATC2_UNORM } },
968
969 { { o(MESA_ycbcr_texture) },
970 { PIPE_FORMAT_UYVY,
971 PIPE_FORMAT_YUYV },
972 GL_TRUE }, /* at least one format must be supported */
973
974 { { o(OES_compressed_ETC1_RGB8_texture) },
975 { PIPE_FORMAT_ETC1_RGB8,
976 PIPE_FORMAT_R8G8B8A8_UNORM },
977 GL_TRUE }, /* at least one format must be supported */
978
979 { { o(ARB_stencil_texturing),
980 o(ARB_texture_stencil8) },
981 { PIPE_FORMAT_X24S8_UINT,
982 PIPE_FORMAT_S8X24_UINT },
983 GL_TRUE }, /* at least one format must be supported */
984
985 { { o(AMD_compressed_ATC_texture) },
986 { PIPE_FORMAT_ATC_RGB,
987 PIPE_FORMAT_ATC_RGBA_EXPLICIT,
988 PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
989 };
990
991 /* Required: vertex fetch support. */
992 static const struct st_extension_format_mapping vertex_mapping[] = {
993 { { o(EXT_vertex_array_bgra) },
994 { PIPE_FORMAT_B8G8R8A8_UNORM } },
995 { { o(ARB_vertex_type_2_10_10_10_rev) },
996 { PIPE_FORMAT_R10G10B10A2_UNORM,
997 PIPE_FORMAT_B10G10R10A2_UNORM,
998 PIPE_FORMAT_R10G10B10A2_SNORM,
999 PIPE_FORMAT_B10G10R10A2_SNORM,
1000 PIPE_FORMAT_R10G10B10A2_USCALED,
1001 PIPE_FORMAT_B10G10R10A2_USCALED,
1002 PIPE_FORMAT_R10G10B10A2_SSCALED,
1003 PIPE_FORMAT_B10G10R10A2_SSCALED } },
1004 { { o(ARB_vertex_type_10f_11f_11f_rev) },
1005 { PIPE_FORMAT_R11G11B10_FLOAT } },
1006 };
1007
1008 static const struct st_extension_format_mapping tbo_rgb32[] = {
1009 { {o(ARB_texture_buffer_object_rgb32) },
1010 { PIPE_FORMAT_R32G32B32_FLOAT,
1011 PIPE_FORMAT_R32G32B32_UINT,
1012 PIPE_FORMAT_R32G32B32_SINT,
1013 } },
1014 };
1015
1016 /*
1017 * Extensions that are supported by all Gallium drivers:
1018 */
1019 extensions->ARB_ES2_compatibility = GL_TRUE;
1020 extensions->ARB_depth_texture = GL_TRUE;
1021 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
1022 extensions->ARB_explicit_attrib_location = GL_TRUE;
1023 extensions->ARB_explicit_uniform_location = GL_TRUE;
1024 extensions->ARB_fragment_coord_conventions = GL_TRUE;
1025 extensions->ARB_fragment_program = GL_TRUE;
1026 extensions->ARB_fragment_shader = GL_TRUE;
1027 extensions->ARB_half_float_vertex = GL_TRUE;
1028 extensions->ARB_internalformat_query = GL_TRUE;
1029 extensions->ARB_internalformat_query2 = GL_TRUE;
1030 extensions->ARB_map_buffer_range = GL_TRUE;
1031 extensions->ARB_sync = GL_TRUE;
1032 extensions->ARB_texture_border_clamp = GL_TRUE;
1033 extensions->ARB_texture_cube_map = GL_TRUE;
1034 extensions->ARB_texture_env_combine = GL_TRUE;
1035 extensions->ARB_texture_env_crossbar = GL_TRUE;
1036 extensions->ARB_texture_env_dot3 = GL_TRUE;
1037 extensions->ARB_vertex_program = GL_TRUE;
1038 extensions->ARB_vertex_shader = GL_TRUE;
1039
1040 extensions->EXT_blend_color = GL_TRUE;
1041 extensions->EXT_blend_func_separate = GL_TRUE;
1042 extensions->EXT_blend_minmax = GL_TRUE;
1043 extensions->EXT_EGL_image_storage = GL_TRUE;
1044 extensions->EXT_gpu_program_parameters = GL_TRUE;
1045 extensions->EXT_pixel_buffer_object = GL_TRUE;
1046 extensions->EXT_point_parameters = GL_TRUE;
1047 extensions->EXT_provoking_vertex = GL_TRUE;
1048 extensions->EXT_stencil_two_side = GL_TRUE;
1049 extensions->EXT_texture_env_dot3 = GL_TRUE;
1050
1051 extensions->ATI_fragment_shader = GL_TRUE;
1052 extensions->ATI_texture_env_combine3 = GL_TRUE;
1053
1054 extensions->MESA_framebuffer_flip_y = GL_TRUE;
1055 extensions->MESA_pack_invert = GL_TRUE;
1056
1057 extensions->NV_copy_image = GL_TRUE;
1058 extensions->NV_fog_distance = GL_TRUE;
1059 extensions->NV_texture_env_combine4 = GL_TRUE;
1060 extensions->NV_texture_rectangle = GL_TRUE;
1061
1062 extensions->OES_EGL_image = GL_TRUE;
1063 extensions->OES_EGL_image_external = GL_TRUE;
1064 extensions->OES_draw_texture = GL_TRUE;
1065
1066 /* Expose the extensions which directly correspond to gallium caps. */
1067 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
1068 if (screen->get_param(screen, cap_mapping[i].cap)) {
1069 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
1070 }
1071 }
1072
1073 /* Expose the extensions which directly correspond to gallium formats. */
1074 init_format_extensions(screen, extensions, rendertarget_mapping,
1075 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1076 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1077 init_format_extensions(screen, extensions, rt_blendable,
1078 ARRAY_SIZE(rt_blendable), PIPE_TEXTURE_2D,
1079 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
1080 PIPE_BIND_BLENDABLE);
1081 init_format_extensions(screen, extensions, depthstencil_mapping,
1082 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1083 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1084 init_format_extensions(screen, extensions, texture_mapping,
1085 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1086 PIPE_BIND_SAMPLER_VIEW);
1087 init_format_extensions(screen, extensions, vertex_mapping,
1088 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1089 PIPE_BIND_VERTEX_BUFFER);
1090
1091 /* Figure out GLSL support and set GLSLVersion to it. */
1092 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1093 consts->GLSLVersionCompat =
1094 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1095
1096 const unsigned ESSLVersion =
1097 screen->get_param(screen, PIPE_CAP_ESSL_FEATURE_LEVEL);
1098 const unsigned GLSLVersion =
1099 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1100 consts->GLSLVersion;
1101
1102 _mesa_override_glsl_version(consts);
1103
1104 if (options->force_glsl_version > 0 &&
1105 options->force_glsl_version <= GLSLVersion) {
1106 consts->ForceGLSLVersion = options->force_glsl_version;
1107 }
1108
1109 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1110
1111 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1112
1113 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1114
1115 consts->dri_config_options_sha1 = options->config_options_sha1;
1116
1117 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1118
1119 /* Technically we are turning on the EXT_gpu_shader5 extension,
1120 * ARB_gpu_shader5 does not exist in GLES, but this flag is what
1121 * switches on EXT_gpu_shader5:
1122 */
1123 if (api == API_OPENGLES2 && ESSLVersion >= 320)
1124 extensions->ARB_gpu_shader5 = GL_TRUE;
1125
1126 if (GLSLVersion >= 400 && !options->disable_arb_gpu_shader5)
1127 extensions->ARB_gpu_shader5 = GL_TRUE;
1128 if (GLSLVersion >= 410)
1129 extensions->ARB_shader_precision = GL_TRUE;
1130
1131 /* This extension needs full OpenGL 3.2, but we don't know if that's
1132 * supported at this point. Only check the GLSL version. */
1133 if (GLSLVersion >= 150 &&
1134 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1135 extensions->AMD_vertex_shader_layer = GL_TRUE;
1136 }
1137
1138 if (GLSLVersion >= 140) {
1139 /* Since GLSL 1.40 has support for all of the features of gpu_shader4,
1140 * we can always expose it if the driver can do 140. Supporting
1141 * gpu_shader4 on drivers without GLSL 1.40 is left for a future
1142 * pipe cap.
1143 */
1144 extensions->EXT_gpu_shader4 = GL_TRUE;
1145 extensions->EXT_texture_buffer_object = GL_TRUE;
1146
1147 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1148 extensions->ARB_enhanced_layouts = GL_TRUE;
1149 }
1150
1151 if (GLSLVersion >= 130) {
1152 consts->NativeIntegers = GL_TRUE;
1153 consts->MaxClipPlanes = 8;
1154
1155 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1156 consts->VertexID_is_zero_based = GL_TRUE;
1157 }
1158
1159 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1160 extensions->ARB_conservative_depth = GL_TRUE;
1161 extensions->ARB_shading_language_packing = GL_TRUE;
1162 extensions->OES_depth_texture_cube_map = GL_TRUE;
1163 extensions->ARB_shading_language_420pack = GL_TRUE;
1164 extensions->ARB_texture_query_levels = GL_TRUE;
1165
1166 extensions->ARB_shader_bit_encoding = GL_TRUE;
1167
1168 extensions->EXT_shader_integer_mix = GL_TRUE;
1169 extensions->ARB_arrays_of_arrays = GL_TRUE;
1170 extensions->MESA_shader_integer_functions = GL_TRUE;
1171
1172 if (screen->get_param(screen, PIPE_CAP_OPENCL_INTEGER_FUNCTIONS) &&
1173 screen->get_param(screen, PIPE_CAP_INTEGER_MULTIPLY_32X16)) {
1174 extensions->INTEL_shader_integer_functions2 = GL_TRUE;
1175 }
1176 } else {
1177 /* Optional integer support for GLSL 1.2. */
1178 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1179 PIPE_SHADER_CAP_INTEGERS) &&
1180 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1181 PIPE_SHADER_CAP_INTEGERS)) {
1182 consts->NativeIntegers = GL_TRUE;
1183
1184 extensions->EXT_shader_integer_mix = GL_TRUE;
1185 }
1186
1187 /* Integer textures make no sense before GLSL 1.30 */
1188 extensions->EXT_texture_integer = GL_FALSE;
1189 }
1190
1191 consts->GLSLZeroInit = options->glsl_zero_init;
1192
1193 consts->VendorOverride = options->force_gl_vendor;
1194
1195 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1196
1197 /* Below are the cases which cannot be moved into tables easily. */
1198
1199 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1200 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1201 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1202 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1203 extensions->ARB_tessellation_shader = GL_TRUE;
1204 }
1205
1206 /* What this is really checking for is the ability to support multiple
1207 * invocations of a geometry shader. There is no separate cap for that, so
1208 * we check the GLSLVersion.
1209 */
1210 if ((GLSLVersion >= 400 || ESSLVersion >= 310) &&
1211 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1212 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1213 extensions->OES_geometry_shader = GL_TRUE;
1214 }
1215
1216 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1217 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1218 */
1219 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1220 extensions->ARB_gpu_shader5;
1221
1222 /* Maximum sample count. */
1223 {
1224 static const enum pipe_format color_formats[] = {
1225 PIPE_FORMAT_R8G8B8A8_UNORM,
1226 PIPE_FORMAT_B8G8R8A8_UNORM,
1227 PIPE_FORMAT_A8R8G8B8_UNORM,
1228 PIPE_FORMAT_A8B8G8R8_UNORM,
1229 };
1230 static const enum pipe_format depth_formats[] = {
1231 PIPE_FORMAT_Z16_UNORM,
1232 PIPE_FORMAT_Z24X8_UNORM,
1233 PIPE_FORMAT_X8Z24_UNORM,
1234 PIPE_FORMAT_Z32_UNORM,
1235 PIPE_FORMAT_Z32_FLOAT
1236 };
1237 static const enum pipe_format int_formats[] = {
1238 PIPE_FORMAT_R8G8B8A8_SINT
1239 };
1240 static const enum pipe_format void_formats[] = {
1241 PIPE_FORMAT_NONE
1242 };
1243
1244 consts->MaxSamples =
1245 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1246 color_formats, 16,
1247 PIPE_BIND_RENDER_TARGET);
1248
1249 consts->MaxImageSamples =
1250 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1251 color_formats, 16,
1252 PIPE_BIND_SHADER_IMAGE);
1253
1254 consts->MaxColorTextureSamples =
1255 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1256 color_formats, consts->MaxSamples,
1257 PIPE_BIND_SAMPLER_VIEW);
1258
1259 consts->MaxDepthTextureSamples =
1260 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1261 depth_formats, consts->MaxSamples,
1262 PIPE_BIND_SAMPLER_VIEW);
1263
1264 consts->MaxIntegerSamples =
1265 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1266 int_formats, consts->MaxSamples,
1267 PIPE_BIND_SAMPLER_VIEW);
1268
1269 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1270 consts->MaxFramebufferSamples =
1271 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1272 void_formats, 32,
1273 PIPE_BIND_RENDER_TARGET);
1274
1275 if (extensions->AMD_framebuffer_multisample_advanced) {
1276 /* AMD_framebuffer_multisample_advanced */
1277 /* This can be greater than storage samples. */
1278 consts->MaxColorFramebufferSamples =
1279 get_max_samples_for_formats_advanced(screen,
1280 ARRAY_SIZE(color_formats),
1281 color_formats, 16,
1282 consts->MaxSamples,
1283 PIPE_BIND_RENDER_TARGET);
1284
1285 /* If the driver supports N color samples, it means it supports
1286 * N samples and N storage samples. N samples >= N storage
1287 * samples.
1288 */
1289 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1290 consts->MaxDepthStencilFramebufferSamples =
1291 consts->MaxDepthTextureSamples;
1292
1293 assert(consts->MaxColorFramebufferSamples >=
1294 consts->MaxDepthStencilFramebufferSamples);
1295 assert(consts->MaxDepthStencilFramebufferSamples >=
1296 consts->MaxColorFramebufferStorageSamples);
1297
1298 consts->NumSupportedMultisampleModes = 0;
1299
1300 unsigned depth_samples_supported = 0;
1301
1302 for (unsigned samples = 2;
1303 samples <= consts->MaxDepthStencilFramebufferSamples;
1304 samples++) {
1305 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1306 PIPE_TEXTURE_2D, samples, samples,
1307 PIPE_BIND_DEPTH_STENCIL))
1308 depth_samples_supported |= 1 << samples;
1309 }
1310
1311 for (unsigned samples = 2;
1312 samples <= consts->MaxColorFramebufferSamples;
1313 samples++) {
1314 for (unsigned depth_samples = 2;
1315 depth_samples <= samples; depth_samples++) {
1316 if (!(depth_samples_supported & (1 << depth_samples)))
1317 continue;
1318
1319 for (unsigned storage_samples = 2;
1320 storage_samples <= depth_samples; storage_samples++) {
1321 if (screen->is_format_supported(screen,
1322 PIPE_FORMAT_R8G8B8A8_UNORM,
1323 PIPE_TEXTURE_2D,
1324 samples,
1325 storage_samples,
1326 PIPE_BIND_RENDER_TARGET)) {
1327 unsigned i = consts->NumSupportedMultisampleModes;
1328
1329 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1330 consts->SupportedMultisampleModes[i].NumColorSamples =
1331 samples;
1332 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1333 storage_samples;
1334 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1335 depth_samples;
1336 consts->NumSupportedMultisampleModes++;
1337 }
1338 }
1339 }
1340 }
1341 }
1342 }
1343
1344 if (consts->MaxSamples >= 2) {
1345 /* Real MSAA support */
1346 extensions->EXT_framebuffer_multisample = GL_TRUE;
1347 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1348 }
1349 else if (consts->MaxSamples > 0 &&
1350 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1351 /* fake MSAA support */
1352 consts->FakeSWMSAA = GL_TRUE;
1353 extensions->EXT_framebuffer_multisample = GL_TRUE;
1354 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1355 extensions->ARB_texture_multisample = GL_TRUE;
1356 }
1357
1358 if (consts->MaxDualSourceDrawBuffers > 0 &&
1359 !options->disable_blend_func_extended)
1360 extensions->ARB_blend_func_extended = GL_TRUE;
1361
1362 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1363 extensions->ARB_timer_query) {
1364 extensions->EXT_timer_query = GL_TRUE;
1365 }
1366
1367 if (extensions->ARB_transform_feedback2 &&
1368 extensions->ARB_draw_instanced) {
1369 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1370 }
1371 if (options->force_glsl_extensions_warn)
1372 consts->ForceGLSLExtensionsWarn = 1;
1373
1374 if (options->disable_glsl_line_continuations)
1375 consts->DisableGLSLLineContinuations = 1;
1376
1377 if (options->allow_glsl_extension_directive_midshader)
1378 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1379
1380 if (options->allow_glsl_builtin_const_expression)
1381 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1382
1383 if (options->allow_glsl_relaxed_es)
1384 consts->AllowGLSLRelaxedES = GL_TRUE;
1385
1386 if (options->allow_glsl_layout_qualifier_on_function_parameters)
1387 consts->AllowLayoutQualifiersOnFunctionParameters = GL_TRUE;
1388
1389 consts->MinMapBufferAlignment =
1390 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1391
1392 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1393 if (api == API_OPENGL_COMPAT &&
1394 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1395 extensions->ARB_texture_buffer_object = GL_FALSE;
1396
1397 if (extensions->ARB_texture_buffer_object) {
1398 consts->MaxTextureBufferSize =
1399 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1400 (1u << 31) - 1);
1401 consts->TextureBufferOffsetAlignment =
1402 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1403
1404 if (consts->TextureBufferOffsetAlignment)
1405 extensions->ARB_texture_buffer_range = GL_TRUE;
1406
1407 init_format_extensions(screen, extensions, tbo_rgb32,
1408 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1409 PIPE_BIND_SAMPLER_VIEW);
1410 }
1411
1412 extensions->OES_texture_buffer =
1413 extensions->ARB_texture_buffer_object &&
1414 extensions->ARB_texture_buffer_range &&
1415 extensions->ARB_texture_buffer_object_rgb32 &&
1416 extensions->ARB_shader_image_load_store;
1417
1418 extensions->EXT_framebuffer_sRGB =
1419 screen->get_param(screen, PIPE_CAP_DEST_SURFACE_SRGB_CONTROL) &&
1420 extensions->EXT_sRGB;
1421
1422 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1423 * If the number of available texture indirections is very limited, then we
1424 * prefer to disable varying packing rather than run the risk of varying
1425 * packing preventing a shader from running.
1426 */
1427 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1428 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1429 /* We can't disable varying packing if transform feedback is available,
1430 * because transform feedback code assumes a packed varying layout.
1431 */
1432 if (!extensions->EXT_transform_feedback)
1433 consts->DisableVaryingPacking = GL_TRUE;
1434 }
1435
1436 if (!screen->get_param(screen, PIPE_CAP_PACKED_STREAM_OUTPUT))
1437 consts->DisableTransformFeedbackPacking = GL_TRUE;
1438
1439 unsigned max_fb_fetch_rts = screen->get_param(screen, PIPE_CAP_FBFETCH);
1440 bool coherent_fb_fetch =
1441 screen->get_param(screen, PIPE_CAP_FBFETCH_COHERENT);
1442
1443 if (max_fb_fetch_rts > 0) {
1444 extensions->KHR_blend_equation_advanced = true;
1445 extensions->KHR_blend_equation_advanced_coherent = coherent_fb_fetch;
1446
1447 if (max_fb_fetch_rts >=
1448 screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS)) {
1449 extensions->EXT_shader_framebuffer_fetch_non_coherent = true;
1450 extensions->EXT_shader_framebuffer_fetch = coherent_fb_fetch;
1451 }
1452 }
1453
1454 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1455 if (consts->MaxViewports >= 16) {
1456 if (GLSLVersion >= 400) {
1457 consts->ViewportBounds.Min = -32768.0;
1458 consts->ViewportBounds.Max = 32767.0;
1459 } else {
1460 consts->ViewportBounds.Min = -16384.0;
1461 consts->ViewportBounds.Max = 16383.0;
1462 }
1463 extensions->ARB_viewport_array = GL_TRUE;
1464 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1465 if (extensions->AMD_vertex_shader_layer)
1466 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1467 }
1468
1469 if (extensions->AMD_vertex_shader_layer &&
1470 extensions->AMD_vertex_shader_viewport_index &&
1471 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1472 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1473
1474 /* ARB_framebuffer_no_attachments */
1475 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1476 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1477 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1478 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1479 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1480
1481 /* GL_ARB_ES3_compatibility.
1482 * Check requirements for GLSL ES 3.00.
1483 */
1484 if (GLSLVersion >= 130 &&
1485 extensions->ARB_uniform_buffer_object &&
1486 extensions->NV_primitive_restart &&
1487 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1488 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1489 /* Requirements for ETC2 emulation. */
1490 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1491 PIPE_TEXTURE_2D, 0, 0,
1492 PIPE_BIND_SAMPLER_VIEW) &&
1493 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1494 PIPE_TEXTURE_2D, 0, 0,
1495 PIPE_BIND_SAMPLER_VIEW) &&
1496 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1497 PIPE_TEXTURE_2D, 0, 0,
1498 PIPE_BIND_SAMPLER_VIEW) &&
1499 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1500 PIPE_TEXTURE_2D, 0, 0,
1501 PIPE_BIND_SAMPLER_VIEW) &&
1502 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1503 PIPE_TEXTURE_2D, 0, 0,
1504 PIPE_BIND_SAMPLER_VIEW) &&
1505 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1506 PIPE_TEXTURE_2D, 0, 0,
1507 PIPE_BIND_SAMPLER_VIEW)) {
1508 extensions->ARB_ES3_compatibility = GL_TRUE;
1509 }
1510
1511 #ifdef HAVE_ST_VDPAU
1512 if (screen->get_video_param &&
1513 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1514 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1515 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1516 extensions->NV_vdpau_interop = GL_TRUE;
1517 }
1518 #endif
1519
1520 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1521 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1522 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1523 }
1524
1525 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1526 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1527 extensions->GREMEDY_string_marker = GL_TRUE;
1528
1529 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1530 int compute_supported_irs =
1531 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1532 PIPE_SHADER_CAP_SUPPORTED_IRS);
1533 if (compute_supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
1534 (1 << PIPE_SHADER_IR_NIR))) {
1535 enum pipe_shader_ir ir =
1536 (compute_supported_irs & PIPE_SHADER_IR_NIR) ?
1537 PIPE_SHADER_IR_NIR : PIPE_SHADER_IR_TGSI;
1538 uint64_t grid_size[3], block_size[3];
1539 uint64_t max_local_size, max_threads_per_block;
1540
1541 screen->get_compute_param(screen, ir,
1542 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1543 screen->get_compute_param(screen, ir,
1544 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1545 screen->get_compute_param(screen, ir,
1546 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1547 &max_threads_per_block);
1548 screen->get_compute_param(screen, ir,
1549 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1550 &max_local_size);
1551
1552 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1553 consts->MaxComputeSharedMemorySize = max_local_size;
1554
1555 for (i = 0; i < 3; i++) {
1556 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1557 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1558 }
1559
1560 extensions->ARB_compute_shader =
1561 extensions->ARB_shader_image_load_store &&
1562 extensions->ARB_shader_atomic_counters;
1563
1564 if (extensions->ARB_compute_shader) {
1565 uint64_t max_variable_threads_per_block = 0;
1566
1567 screen->get_compute_param(screen, ir,
1568 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1569 &max_variable_threads_per_block);
1570
1571 for (i = 0; i < 3; i++) {
1572 /* Clamp the values to avoid having a local work group size
1573 * greater than the maximum number of invocations.
1574 */
1575 consts->MaxComputeVariableGroupSize[i] =
1576 MIN2(consts->MaxComputeWorkGroupSize[i],
1577 max_variable_threads_per_block);
1578 }
1579 consts->MaxComputeVariableGroupInvocations =
1580 max_variable_threads_per_block;
1581
1582 extensions->ARB_compute_variable_group_size =
1583 max_variable_threads_per_block > 0;
1584 }
1585 }
1586 }
1587
1588 extensions->ARB_texture_float =
1589 extensions->OES_texture_half_float &&
1590 extensions->OES_texture_float;
1591
1592 if (extensions->EXT_texture_filter_anisotropic &&
1593 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1594 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1595
1596 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1597
1598 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1599 * there's no clean way of telling whether we would support ES 3.1 from
1600 * here, so copy the condition from compute_version_es2 here. A lot of
1601 * these are redunant, but simpler to just have a (near-)exact copy here.
1602 */
1603 extensions->ARB_ES3_1_compatibility =
1604 extensions->ARB_ES3_compatibility &&
1605 extensions->ARB_arrays_of_arrays &&
1606 extensions->ARB_compute_shader &&
1607 extensions->ARB_draw_indirect &&
1608 extensions->ARB_explicit_uniform_location &&
1609 extensions->ARB_framebuffer_no_attachments &&
1610 extensions->ARB_shader_atomic_counters &&
1611 extensions->ARB_shader_image_load_store &&
1612 extensions->ARB_shader_image_size &&
1613 extensions->ARB_shader_storage_buffer_object &&
1614 extensions->ARB_shading_language_packing &&
1615 extensions->ARB_stencil_texturing &&
1616 extensions->ARB_texture_multisample &&
1617 extensions->ARB_gpu_shader5 &&
1618 extensions->EXT_shader_integer_mix;
1619
1620 extensions->OES_texture_cube_map_array =
1621 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1622 extensions->OES_geometry_shader &&
1623 extensions->ARB_texture_cube_map_array;
1624
1625 extensions->OES_viewport_array =
1626 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1627 extensions->OES_geometry_shader &&
1628 extensions->ARB_viewport_array;
1629
1630 extensions->OES_primitive_bounding_box =
1631 extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310;
1632
1633 consts->NoPrimitiveBoundingBoxOutput = true;
1634
1635 extensions->ANDROID_extension_pack_es31a =
1636 extensions->KHR_texture_compression_astc_ldr &&
1637 extensions->KHR_blend_equation_advanced &&
1638 extensions->OES_sample_variables &&
1639 extensions->ARB_shader_image_load_store &&
1640 extensions->ARB_texture_stencil8 &&
1641 extensions->ARB_texture_multisample &&
1642 extensions->OES_copy_image &&
1643 extensions->ARB_draw_buffers_blend &&
1644 extensions->OES_geometry_shader &&
1645 extensions->ARB_gpu_shader5 &&
1646 extensions->OES_primitive_bounding_box &&
1647 extensions->ARB_tessellation_shader &&
1648 extensions->ARB_texture_border_clamp &&
1649 extensions->OES_texture_buffer &&
1650 extensions->OES_texture_cube_map_array &&
1651 extensions->EXT_texture_sRGB_decode;
1652
1653 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1654 * before overall versions are selected. Also it's actually a subset of ES
1655 * 3.2, since it doesn't require ASTC or advanced blending.
1656 */
1657 extensions->ARB_ES3_2_compatibility =
1658 extensions->ARB_ES3_1_compatibility &&
1659 extensions->KHR_robustness &&
1660 extensions->ARB_copy_image &&
1661 extensions->ARB_draw_buffers_blend &&
1662 extensions->ARB_draw_elements_base_vertex &&
1663 extensions->OES_geometry_shader &&
1664 extensions->ARB_gpu_shader5 &&
1665 extensions->ARB_sample_shading &&
1666 extensions->ARB_tessellation_shader &&
1667 extensions->ARB_texture_border_clamp &&
1668 extensions->OES_texture_buffer &&
1669 extensions->ARB_texture_cube_map_array &&
1670 extensions->ARB_texture_stencil8 &&
1671 extensions->ARB_texture_multisample;
1672
1673 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1674 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1675 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1676 float max_dilate;
1677 bool pre_snap_triangles, pre_snap_points_lines;
1678
1679 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1680
1681 pre_snap_triangles =
1682 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1683 pre_snap_points_lines =
1684 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1685
1686 extensions->NV_conservative_raster =
1687 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1688
1689 if (extensions->NV_conservative_raster) {
1690 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1691 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1692 extensions->NV_conservative_raster_pre_snap =
1693 pre_snap_triangles && pre_snap_points_lines;
1694 }
1695 }
1696
1697 if (extensions->ARB_gl_spirv) {
1698 struct spirv_supported_capabilities *spirv_caps = &consts->SpirVCapabilities;
1699
1700 spirv_caps->atomic_storage = extensions->ARB_shader_atomic_counters;
1701 spirv_caps->draw_parameters = extensions->ARB_shader_draw_parameters;
1702 spirv_caps->float64 = extensions->ARB_gpu_shader_fp64;
1703 spirv_caps->geometry_streams = extensions->ARB_gpu_shader5;
1704 spirv_caps->image_write_without_format = extensions->ARB_shader_image_load_store;
1705 spirv_caps->int64 = extensions->ARB_gpu_shader_int64;
1706 spirv_caps->tessellation = extensions->ARB_tessellation_shader;
1707 spirv_caps->transform_feedback = extensions->ARB_transform_feedback3;
1708 spirv_caps->variable_pointers =
1709 screen->get_param(screen, PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS);
1710 spirv_caps->integer_functions2 = extensions->INTEL_shader_integer_functions2;
1711
1712 consts->SpirVExtensions = CALLOC_STRUCT(spirv_supported_extensions);
1713 _mesa_fill_supported_spirv_extensions(consts->SpirVExtensions, spirv_caps);
1714 }
1715 }