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