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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/version.h"
35
36 #include "pipe/p_context.h"
37 #include "pipe/p_defines.h"
38 #include "pipe/p_screen.h"
39 #include "tgsi/tgsi_from_mesa.h"
40 #include "util/u_math.h"
41
42 #include "st_context.h"
43 #include "st_debug.h"
44 #include "st_extensions.h"
45 #include "st_format.h"
46
47
48 /*
49 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
50 * avoid evaluating arguments (which are often function calls) more than once.
51 */
52
53 static unsigned _min(unsigned a, unsigned b)
54 {
55 return (a < b) ? a : b;
56 }
57
58 static float _maxf(float a, float b)
59 {
60 return (a > b) ? a : b;
61 }
62
63 static int _clamp(int a, int min, int max)
64 {
65 if (a < min)
66 return min;
67 else if (a > max)
68 return max;
69 else
70 return a;
71 }
72
73
74 /**
75 * Query driver to get implementation limits.
76 * Note that we have to limit/clamp against Mesa's internal limits too.
77 */
78 void st_init_limits(struct pipe_screen *screen,
79 struct gl_constants *c, struct gl_extensions *extensions,
80 gl_api api)
81 {
82 int supported_irs;
83 unsigned sh;
84 bool can_ubo = true;
85 int temp;
86
87 c->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 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
136 * for non-aa sizes, but we can go down to 0.0 for aa points.
137 */
138 c->MinPointSize = 1.0f;
139 c->MinPointSizeAA = 0.0f;
140
141 c->MaxTextureMaxAnisotropy =
142 _maxf(2.0f,
143 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
144
145 c->MaxTextureLodBias =
146 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
147
148 c->QuadsFollowProvokingVertexConvention =
149 screen->get_param(screen,
150 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
151
152 c->MaxUniformBlockSize =
153 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
154 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
155 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
156 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
157 */
158 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
159
160 if (c->MaxUniformBlockSize < 16384) {
161 can_ubo = false;
162 }
163
164 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
165 struct gl_shader_compiler_options *options;
166 struct gl_program_constants *pc;
167 const nir_shader_compiler_options *nir_options = NULL;
168
169 if (screen->get_compiler_options) {
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 bool prefer_nir = PIPE_SHADER_IR_NIR ==
331 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);
332
333 /* NIR can do the lowering on our behalf and we'll get better results
334 * because it can actually optimize SSBO access.
335 */
336 options->LowerBufferInterfaceBlocks = !prefer_nir;
337 }
338
339 c->MaxUserAssignableUniformLocations =
340 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
341 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
342 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
343 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
344 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
345
346 c->GLSLOptimizeConservatively =
347 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
348 c->GLSLTessLevelsAsInputs =
349 screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
350 c->LowerTessLevel =
351 !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
352 c->LowerCsDerivedVariables = true;
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->GLSLFrontFacingIsSysVal =
448 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
449
450 /* GL_ARB_get_program_binary
451 *
452 * The QT framework has a bug in their shader program cache, which is built
453 * on GL_ARB_get_program_binary. In an effort to allow them to fix the bug
454 * we don't enable more than 1 binary format for compatibility profiles.
455 */
456 if (api != API_OPENGL_COMPAT &&
457 screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
458 c->NumProgramBinaryFormats = 1;
459
460 c->MaxAtomicBufferBindings =
461 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
462 c->MaxAtomicBufferSize =
463 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
464
465 c->MaxCombinedAtomicBuffers =
466 MIN2(screen->get_param(screen,
467 PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
468 MAX_COMBINED_ATOMIC_BUFFERS);
469 if (!c->MaxCombinedAtomicBuffers) {
470 c->MaxCombinedAtomicBuffers =
471 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
472 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
473 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
474 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
475 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
476 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
477 }
478
479 c->MaxCombinedAtomicCounters =
480 screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
481 if (!c->MaxCombinedAtomicCounters)
482 c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
483
484 if (c->MaxCombinedAtomicBuffers > 0) {
485 extensions->ARB_shader_atomic_counters = GL_TRUE;
486 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
487 }
488
489 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
490 c->ShaderStorageBufferOffsetAlignment =
491 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
492 if (c->ShaderStorageBufferOffsetAlignment) {
493 c->MaxCombinedShaderStorageBlocks =
494 MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
495 MAX_COMBINED_SHADER_STORAGE_BUFFERS);
496 if (!c->MaxCombinedShaderStorageBlocks) {
497 c->MaxCombinedShaderStorageBlocks =
498 c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
499 c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
500 c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
501 c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
502 c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
503 assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
504 }
505 c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;
506
507 c->MaxCombinedShaderOutputResources +=
508 c->MaxCombinedShaderStorageBlocks;
509 c->MaxShaderStorageBlockSize =
510 screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
511 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
512 }
513
514 c->MaxCombinedImageUniforms =
515 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
516 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
517 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
518 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
519 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
520 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
521 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
522 c->MaxImageUnits = MAX_IMAGE_UNITS;
523 if (c->MaxCombinedImageUniforms) {
524 extensions->ARB_shader_image_load_store = GL_TRUE;
525 extensions->ARB_shader_image_size = GL_TRUE;
526 }
527
528 /* ARB_framebuffer_no_attachments */
529 c->MaxFramebufferWidth = c->MaxViewportWidth;
530 c->MaxFramebufferHeight = c->MaxViewportHeight;
531 /* NOTE: we cheat here a little by assuming that
532 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
533 * number of layers as we need, although we technically
534 * could have more the generality is not really useful
535 * in practicality.
536 */
537 c->MaxFramebufferLayers =
538 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
539
540 c->MaxWindowRectangles =
541 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
542
543 c->SparseBufferPageSize =
544 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
545
546 c->AllowMappedBuffersDuringExecution =
547 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
548
549 c->UseSTD430AsDefaultPacking =
550 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
551
552 c->MaxSubpixelPrecisionBiasBits =
553 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);
554
555 c->ConservativeRasterDilateRange[0] =
556 screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
557 c->ConservativeRasterDilateRange[1] =
558 screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
559 c->ConservativeRasterDilateGranularity =
560 screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);
561
562 /* limit the max combined shader output resources to a driver limit */
563 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
564 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
565 c->MaxCombinedShaderOutputResources = temp;
566 }
567
568
569 /**
570 * Given a member \c x of struct gl_extensions, return offset of
571 * \c x in bytes.
572 */
573 #define o(x) offsetof(struct gl_extensions, x)
574
575
576 struct st_extension_cap_mapping {
577 int extension_offset;
578 int cap;
579 };
580
581 struct st_extension_format_mapping {
582 int extension_offset[2];
583 enum pipe_format format[32];
584
585 /* If TRUE, at least one format must be supported for the extensions to be
586 * advertised. If FALSE, all the formats must be supported. */
587 GLboolean need_at_least_one;
588 };
589
590 /**
591 * Enable extensions if certain pipe formats are supported by the driver.
592 * What extensions will be enabled and what formats must be supported is
593 * described by the array of st_extension_format_mapping.
594 *
595 * target and bind_flags are passed to is_format_supported.
596 */
597 static void
598 init_format_extensions(struct pipe_screen *screen,
599 struct gl_extensions *extensions,
600 const struct st_extension_format_mapping *mapping,
601 unsigned num_mappings,
602 enum pipe_texture_target target,
603 unsigned bind_flags)
604 {
605 GLboolean *extension_table = (GLboolean *) extensions;
606 unsigned i;
607 int j;
608 int num_formats = ARRAY_SIZE(mapping->format);
609 int num_ext = ARRAY_SIZE(mapping->extension_offset);
610
611 for (i = 0; i < num_mappings; i++) {
612 int num_supported = 0;
613
614 /* Examine each format in the list. */
615 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
616 if (screen->is_format_supported(screen, mapping[i].format[j],
617 target, 0, 0, bind_flags)) {
618 num_supported++;
619 }
620 }
621
622 if (!num_supported ||
623 (!mapping[i].need_at_least_one && num_supported != j)) {
624 continue;
625 }
626
627 /* Enable all extensions in the list. */
628 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
629 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
630 }
631 }
632
633
634 /**
635 * Given a list of formats and bind flags, return the maximum number
636 * of samples supported by any of those formats.
637 */
638 static unsigned
639 get_max_samples_for_formats(struct pipe_screen *screen,
640 unsigned num_formats,
641 const enum pipe_format *formats,
642 unsigned max_samples,
643 unsigned bind)
644 {
645 unsigned i, f;
646
647 for (i = max_samples; i > 0; --i) {
648 for (f = 0; f < num_formats; f++) {
649 if (screen->is_format_supported(screen, formats[f],
650 PIPE_TEXTURE_2D, i, i, bind)) {
651 return i;
652 }
653 }
654 }
655 return 0;
656 }
657
658 static unsigned
659 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
660 unsigned num_formats,
661 const enum pipe_format *formats,
662 unsigned max_samples,
663 unsigned num_storage_samples,
664 unsigned bind)
665 {
666 unsigned i, f;
667
668 for (i = max_samples; i > 0; --i) {
669 for (f = 0; f < num_formats; f++) {
670 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
671 i, num_storage_samples, bind)) {
672 return i;
673 }
674 }
675 }
676 return 0;
677 }
678
679 /**
680 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
681 * which GL extensions are supported.
682 * Quite a few extensions are always supported because they are standard
683 * features or can be built on top of other gallium features.
684 * Some fine tuning may still be needed.
685 */
686 void st_init_extensions(struct pipe_screen *screen,
687 struct gl_constants *consts,
688 struct gl_extensions *extensions,
689 struct st_config_options *options,
690 gl_api api)
691 {
692 unsigned i;
693 GLboolean *extension_table = (GLboolean *) extensions;
694
695 static const struct st_extension_cap_mapping cap_mapping[] = {
696 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
697 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
698 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
699 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
700 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
701 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
702 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
703 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
704 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
705 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
706 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
707 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
708 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
709 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
710 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
711 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
712 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
713 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
714 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
715 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
716 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
717 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
718 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
719 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
720 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
721 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
722 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
723 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
724 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
725 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
726 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
727 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
728 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
729 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
730 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
731 { o(EXT_shader_image_load_formatted), PIPE_CAP_IMAGE_LOAD_FORMATTED },
732 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
733 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
734 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
735 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
736 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
737 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
738 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
739 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
740 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
741 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
742 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
743 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
744 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
745 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
746 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
747 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
748
749 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
750
751 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
752 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
753 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
754 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
755 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
756 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
757 { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT },
758 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
759 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
760 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
761 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
762 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
763 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
764 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
765 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
766
767 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
768 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
769 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
770 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
771 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
772 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
773 { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
774 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
775 { o(NV_compute_shader_derivatives), PIPE_CAP_COMPUTE_SHADER_DERIVATIVES },
776 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
777 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
778 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
779 { o(NV_shader_atomic_float), PIPE_CAP_TGSI_ATOMFADD },
780 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
781 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
782 /* GL_NV_point_sprite is not supported by gallium because we don't
783 * support the GL_POINT_SPRITE_R_MODE_NV option. */
784
785 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
786 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
787 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
788 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
789 };
790
791 /* Required: render target and sampler support */
792 static const struct st_extension_format_mapping rendertarget_mapping[] = {
793 { { o(OES_texture_float) },
794 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
795
796 { { o(OES_texture_half_float) },
797 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
798
799 { { o(ARB_texture_rgb10_a2ui) },
800 { PIPE_FORMAT_R10G10B10A2_UINT,
801 PIPE_FORMAT_B10G10R10A2_UINT },
802 GL_TRUE }, /* at least one format must be supported */
803
804 { { o(EXT_sRGB) },
805 { PIPE_FORMAT_A8B8G8R8_SRGB,
806 PIPE_FORMAT_B8G8R8A8_SRGB,
807 PIPE_FORMAT_R8G8B8A8_SRGB },
808 GL_TRUE }, /* at least one format must be supported */
809
810 { { o(EXT_packed_float) },
811 { PIPE_FORMAT_R11G11B10_FLOAT } },
812
813 { { o(EXT_texture_integer) },
814 { PIPE_FORMAT_R32G32B32A32_UINT,
815 PIPE_FORMAT_R32G32B32A32_SINT } },
816
817 { { o(ARB_texture_rg) },
818 { PIPE_FORMAT_R8_UNORM,
819 PIPE_FORMAT_R8G8_UNORM } },
820
821 { { o(EXT_render_snorm) },
822 { PIPE_FORMAT_R8_SNORM,
823 PIPE_FORMAT_R8G8_SNORM,
824 PIPE_FORMAT_R8G8B8A8_SNORM,
825 PIPE_FORMAT_R16_SNORM,
826 PIPE_FORMAT_R16G16_SNORM,
827 PIPE_FORMAT_R16G16B16A16_SNORM } },
828 };
829
830 /* Required: render target, sampler, and blending */
831 static const struct st_extension_format_mapping rt_blendable[] = {
832 { { o(EXT_float_blend) },
833 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
834 };
835
836 /* Required: depth stencil and sampler support */
837 static const struct st_extension_format_mapping depthstencil_mapping[] = {
838 { { o(ARB_depth_buffer_float) },
839 { PIPE_FORMAT_Z32_FLOAT,
840 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
841 };
842
843 /* Required: sampler support */
844 static const struct st_extension_format_mapping texture_mapping[] = {
845 { { o(ARB_texture_compression_rgtc) },
846 { PIPE_FORMAT_RGTC1_UNORM,
847 PIPE_FORMAT_RGTC1_SNORM,
848 PIPE_FORMAT_RGTC2_UNORM,
849 PIPE_FORMAT_RGTC2_SNORM } },
850
851 { { o(EXT_texture_compression_latc) },
852 { PIPE_FORMAT_LATC1_UNORM,
853 PIPE_FORMAT_LATC1_SNORM,
854 PIPE_FORMAT_LATC2_UNORM,
855 PIPE_FORMAT_LATC2_SNORM } },
856
857 { { o(EXT_texture_compression_s3tc),
858 o(ANGLE_texture_compression_dxt) },
859 { PIPE_FORMAT_DXT1_RGB,
860 PIPE_FORMAT_DXT1_RGBA,
861 PIPE_FORMAT_DXT3_RGBA,
862 PIPE_FORMAT_DXT5_RGBA } },
863
864 { { o(EXT_texture_compression_s3tc_srgb) },
865 { PIPE_FORMAT_DXT1_SRGB,
866 PIPE_FORMAT_DXT1_SRGBA,
867 PIPE_FORMAT_DXT3_SRGBA,
868 PIPE_FORMAT_DXT5_SRGBA } },
869
870 { { o(ARB_texture_compression_bptc) },
871 { PIPE_FORMAT_BPTC_RGBA_UNORM,
872 PIPE_FORMAT_BPTC_SRGBA,
873 PIPE_FORMAT_BPTC_RGB_FLOAT,
874 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
875
876 { { o(KHR_texture_compression_astc_ldr),
877 o(KHR_texture_compression_astc_sliced_3d) },
878 { PIPE_FORMAT_ASTC_4x4,
879 PIPE_FORMAT_ASTC_5x4,
880 PIPE_FORMAT_ASTC_5x5,
881 PIPE_FORMAT_ASTC_6x5,
882 PIPE_FORMAT_ASTC_6x6,
883 PIPE_FORMAT_ASTC_8x5,
884 PIPE_FORMAT_ASTC_8x6,
885 PIPE_FORMAT_ASTC_8x8,
886 PIPE_FORMAT_ASTC_10x5,
887 PIPE_FORMAT_ASTC_10x6,
888 PIPE_FORMAT_ASTC_10x8,
889 PIPE_FORMAT_ASTC_10x10,
890 PIPE_FORMAT_ASTC_12x10,
891 PIPE_FORMAT_ASTC_12x12,
892 PIPE_FORMAT_ASTC_4x4_SRGB,
893 PIPE_FORMAT_ASTC_5x4_SRGB,
894 PIPE_FORMAT_ASTC_5x5_SRGB,
895 PIPE_FORMAT_ASTC_6x5_SRGB,
896 PIPE_FORMAT_ASTC_6x6_SRGB,
897 PIPE_FORMAT_ASTC_8x5_SRGB,
898 PIPE_FORMAT_ASTC_8x6_SRGB,
899 PIPE_FORMAT_ASTC_8x8_SRGB,
900 PIPE_FORMAT_ASTC_10x5_SRGB,
901 PIPE_FORMAT_ASTC_10x6_SRGB,
902 PIPE_FORMAT_ASTC_10x8_SRGB,
903 PIPE_FORMAT_ASTC_10x10_SRGB,
904 PIPE_FORMAT_ASTC_12x10_SRGB,
905 PIPE_FORMAT_ASTC_12x12_SRGB } },
906
907 /* ASTC software fallback support. */
908 { { o(KHR_texture_compression_astc_ldr),
909 o(KHR_texture_compression_astc_sliced_3d) },
910 { PIPE_FORMAT_R8G8B8A8_UNORM,
911 PIPE_FORMAT_R8G8B8A8_SRGB } },
912
913 { { o(EXT_texture_shared_exponent) },
914 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
915
916 { { o(EXT_texture_snorm) },
917 { PIPE_FORMAT_R8G8B8A8_SNORM } },
918
919 { { o(EXT_texture_sRGB),
920 o(EXT_texture_sRGB_decode) },
921 { PIPE_FORMAT_A8B8G8R8_SRGB,
922 PIPE_FORMAT_B8G8R8A8_SRGB,
923 PIPE_FORMAT_A8R8G8B8_SRGB,
924 PIPE_FORMAT_R8G8B8A8_SRGB},
925 GL_TRUE }, /* at least one format must be supported */
926
927 { { o(EXT_texture_sRGB_R8) },
928 { PIPE_FORMAT_R8_SRGB },
929 GL_TRUE },
930
931 { { o(EXT_texture_type_2_10_10_10_REV) },
932 { PIPE_FORMAT_R10G10B10A2_UNORM,
933 PIPE_FORMAT_B10G10R10A2_UNORM },
934 GL_TRUE }, /* at least one format must be supported */
935
936 { { o(ATI_texture_compression_3dc) },
937 { PIPE_FORMAT_LATC2_UNORM } },
938
939 { { o(MESA_ycbcr_texture) },
940 { PIPE_FORMAT_UYVY,
941 PIPE_FORMAT_YUYV },
942 GL_TRUE }, /* at least one format must be supported */
943
944 { { o(OES_compressed_ETC1_RGB8_texture) },
945 { PIPE_FORMAT_ETC1_RGB8,
946 PIPE_FORMAT_R8G8B8A8_UNORM },
947 GL_TRUE }, /* at least one format must be supported */
948
949 { { o(ARB_stencil_texturing),
950 o(ARB_texture_stencil8) },
951 { PIPE_FORMAT_X24S8_UINT,
952 PIPE_FORMAT_S8X24_UINT },
953 GL_TRUE }, /* at least one format must be supported */
954
955 { { o(AMD_compressed_ATC_texture) },
956 { PIPE_FORMAT_ATC_RGB,
957 PIPE_FORMAT_ATC_RGBA_EXPLICIT,
958 PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
959 };
960
961 /* Required: vertex fetch support. */
962 static const struct st_extension_format_mapping vertex_mapping[] = {
963 { { o(EXT_vertex_array_bgra) },
964 { PIPE_FORMAT_B8G8R8A8_UNORM } },
965 { { o(ARB_vertex_type_2_10_10_10_rev) },
966 { PIPE_FORMAT_R10G10B10A2_UNORM,
967 PIPE_FORMAT_B10G10R10A2_UNORM,
968 PIPE_FORMAT_R10G10B10A2_SNORM,
969 PIPE_FORMAT_B10G10R10A2_SNORM,
970 PIPE_FORMAT_R10G10B10A2_USCALED,
971 PIPE_FORMAT_B10G10R10A2_USCALED,
972 PIPE_FORMAT_R10G10B10A2_SSCALED,
973 PIPE_FORMAT_B10G10R10A2_SSCALED } },
974 { { o(ARB_vertex_type_10f_11f_11f_rev) },
975 { PIPE_FORMAT_R11G11B10_FLOAT } },
976 };
977
978 static const struct st_extension_format_mapping tbo_rgb32[] = {
979 { {o(ARB_texture_buffer_object_rgb32) },
980 { PIPE_FORMAT_R32G32B32_FLOAT,
981 PIPE_FORMAT_R32G32B32_UINT,
982 PIPE_FORMAT_R32G32B32_SINT,
983 } },
984 };
985
986 /*
987 * Extensions that are supported by all Gallium drivers:
988 */
989 extensions->ARB_ES2_compatibility = GL_TRUE;
990 extensions->ARB_depth_texture = GL_TRUE;
991 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
992 extensions->ARB_explicit_attrib_location = GL_TRUE;
993 extensions->ARB_explicit_uniform_location = GL_TRUE;
994 extensions->ARB_fragment_coord_conventions = GL_TRUE;
995 extensions->ARB_fragment_program = GL_TRUE;
996 extensions->ARB_fragment_program_shadow = GL_TRUE;
997 extensions->ARB_fragment_shader = GL_TRUE;
998 extensions->ARB_half_float_vertex = GL_TRUE;
999 extensions->ARB_internalformat_query = GL_TRUE;
1000 extensions->ARB_internalformat_query2 = GL_TRUE;
1001 extensions->ARB_map_buffer_range = GL_TRUE;
1002 extensions->ARB_shadow = GL_TRUE;
1003 extensions->ARB_sync = GL_TRUE;
1004 extensions->ARB_texture_border_clamp = GL_TRUE;
1005 extensions->ARB_texture_cube_map = GL_TRUE;
1006 extensions->ARB_texture_env_combine = GL_TRUE;
1007 extensions->ARB_texture_env_crossbar = GL_TRUE;
1008 extensions->ARB_texture_env_dot3 = GL_TRUE;
1009 extensions->ARB_vertex_program = GL_TRUE;
1010 extensions->ARB_vertex_shader = GL_TRUE;
1011
1012 extensions->EXT_blend_color = GL_TRUE;
1013 extensions->EXT_blend_func_separate = GL_TRUE;
1014 extensions->EXT_blend_minmax = GL_TRUE;
1015 extensions->EXT_gpu_program_parameters = GL_TRUE;
1016 extensions->EXT_pixel_buffer_object = GL_TRUE;
1017 extensions->EXT_point_parameters = GL_TRUE;
1018 extensions->EXT_provoking_vertex = GL_TRUE;
1019 extensions->EXT_stencil_two_side = GL_TRUE;
1020 extensions->EXT_texture_env_dot3 = GL_TRUE;
1021
1022 extensions->ATI_fragment_shader = GL_TRUE;
1023 extensions->ATI_texture_env_combine3 = GL_TRUE;
1024
1025 extensions->MESA_pack_invert = GL_TRUE;
1026
1027 extensions->NV_fog_distance = GL_TRUE;
1028 extensions->NV_texture_env_combine4 = GL_TRUE;
1029 extensions->NV_texture_rectangle = GL_TRUE;
1030
1031 extensions->OES_EGL_image = GL_TRUE;
1032 extensions->OES_EGL_image_external = GL_TRUE;
1033 extensions->OES_draw_texture = GL_TRUE;
1034
1035 /* Expose the extensions which directly correspond to gallium caps. */
1036 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
1037 if (screen->get_param(screen, cap_mapping[i].cap)) {
1038 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
1039 }
1040 }
1041
1042 /* Expose the extensions which directly correspond to gallium formats. */
1043 init_format_extensions(screen, extensions, rendertarget_mapping,
1044 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1045 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1046 init_format_extensions(screen, extensions, rt_blendable,
1047 ARRAY_SIZE(rt_blendable), PIPE_TEXTURE_2D,
1048 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
1049 PIPE_BIND_BLENDABLE);
1050 init_format_extensions(screen, extensions, depthstencil_mapping,
1051 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1052 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1053 init_format_extensions(screen, extensions, texture_mapping,
1054 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1055 PIPE_BIND_SAMPLER_VIEW);
1056 init_format_extensions(screen, extensions, vertex_mapping,
1057 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1058 PIPE_BIND_VERTEX_BUFFER);
1059
1060 /* Figure out GLSL support and set GLSLVersion to it. */
1061 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1062 consts->GLSLVersionCompat =
1063 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1064
1065 const unsigned ESSLVersion =
1066 screen->get_param(screen, PIPE_CAP_ESSL_FEATURE_LEVEL);
1067 const unsigned GLSLVersion =
1068 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1069 consts->GLSLVersion;
1070
1071 _mesa_override_glsl_version(consts);
1072
1073 if (options->force_glsl_version > 0 &&
1074 options->force_glsl_version <= GLSLVersion) {
1075 consts->ForceGLSLVersion = options->force_glsl_version;
1076 }
1077
1078 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1079
1080 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1081
1082 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1083
1084 consts->dri_config_options_sha1 = options->config_options_sha1;
1085
1086 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1087
1088 /* Technically we are turning on the EXT_gpu_shader5 extension,
1089 * ARB_gpu_shader5 does not exist in GLES, but this flag is what
1090 * switches on EXT_gpu_shader5:
1091 */
1092 if (api == API_OPENGLES2 && ESSLVersion >= 320)
1093 extensions->ARB_gpu_shader5 = GL_TRUE;
1094
1095 if (GLSLVersion >= 400)
1096 extensions->ARB_gpu_shader5 = GL_TRUE;
1097 if (GLSLVersion >= 410)
1098 extensions->ARB_shader_precision = GL_TRUE;
1099
1100 /* This extension needs full OpenGL 3.2, but we don't know if that's
1101 * supported at this point. Only check the GLSL version. */
1102 if (GLSLVersion >= 150 &&
1103 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1104 extensions->AMD_vertex_shader_layer = GL_TRUE;
1105 }
1106
1107 if (GLSLVersion >= 140) {
1108 /* Since GLSL 1.40 has support for all of the features of gpu_shader4,
1109 * we can always expose it if the driver can do 140. Supporting
1110 * gpu_shader4 on drivers without GLSL 1.40 is left for a future
1111 * pipe cap.
1112 */
1113 extensions->EXT_gpu_shader4 = GL_TRUE;
1114 extensions->EXT_texture_buffer_object = GL_TRUE;
1115
1116 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1117 extensions->ARB_enhanced_layouts = GL_TRUE;
1118 }
1119
1120 if (GLSLVersion >= 130) {
1121 consts->NativeIntegers = GL_TRUE;
1122 consts->MaxClipPlanes = 8;
1123
1124 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1125 consts->VertexID_is_zero_based = GL_TRUE;
1126 }
1127
1128 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1129 extensions->ARB_conservative_depth = GL_TRUE;
1130 extensions->ARB_shading_language_packing = GL_TRUE;
1131 extensions->OES_depth_texture_cube_map = GL_TRUE;
1132 extensions->ARB_shading_language_420pack = GL_TRUE;
1133 extensions->ARB_texture_query_levels = GL_TRUE;
1134
1135 extensions->ARB_shader_bit_encoding = GL_TRUE;
1136
1137 extensions->EXT_shader_integer_mix = GL_TRUE;
1138 extensions->ARB_arrays_of_arrays = GL_TRUE;
1139 extensions->MESA_shader_integer_functions = GL_TRUE;
1140 } else {
1141 /* Optional integer support for GLSL 1.2. */
1142 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1143 PIPE_SHADER_CAP_INTEGERS) &&
1144 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1145 PIPE_SHADER_CAP_INTEGERS)) {
1146 consts->NativeIntegers = GL_TRUE;
1147
1148 extensions->EXT_shader_integer_mix = GL_TRUE;
1149 }
1150
1151 /* Integer textures make no sense before GLSL 1.30 */
1152 extensions->EXT_texture_integer = GL_FALSE;
1153 }
1154
1155 consts->GLSLZeroInit = options->glsl_zero_init;
1156
1157 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1158
1159 /* Below are the cases which cannot be moved into tables easily. */
1160
1161 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1162 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1163 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1164 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1165 extensions->ARB_tessellation_shader = GL_TRUE;
1166 }
1167
1168 /* What this is really checking for is the ability to support multiple
1169 * invocations of a geometry shader. There is no separate cap for that, so
1170 * we check the GLSLVersion.
1171 */
1172 if (GLSLVersion >= 400 &&
1173 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1174 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1175 extensions->OES_geometry_shader = GL_TRUE;
1176 }
1177
1178 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1179 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1180 */
1181 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1182 extensions->ARB_gpu_shader5;
1183
1184 /* Maximum sample count. */
1185 {
1186 static const enum pipe_format color_formats[] = {
1187 PIPE_FORMAT_R8G8B8A8_UNORM,
1188 PIPE_FORMAT_B8G8R8A8_UNORM,
1189 PIPE_FORMAT_A8R8G8B8_UNORM,
1190 PIPE_FORMAT_A8B8G8R8_UNORM,
1191 };
1192 static const enum pipe_format depth_formats[] = {
1193 PIPE_FORMAT_Z16_UNORM,
1194 PIPE_FORMAT_Z24X8_UNORM,
1195 PIPE_FORMAT_X8Z24_UNORM,
1196 PIPE_FORMAT_Z32_UNORM,
1197 PIPE_FORMAT_Z32_FLOAT
1198 };
1199 static const enum pipe_format int_formats[] = {
1200 PIPE_FORMAT_R8G8B8A8_SINT
1201 };
1202 static const enum pipe_format void_formats[] = {
1203 PIPE_FORMAT_NONE
1204 };
1205
1206 consts->MaxSamples =
1207 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1208 color_formats, 16,
1209 PIPE_BIND_RENDER_TARGET);
1210
1211 consts->MaxImageSamples =
1212 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1213 color_formats, 16,
1214 PIPE_BIND_SHADER_IMAGE);
1215
1216 consts->MaxColorTextureSamples =
1217 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1218 color_formats, consts->MaxSamples,
1219 PIPE_BIND_SAMPLER_VIEW);
1220
1221 consts->MaxDepthTextureSamples =
1222 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1223 depth_formats, consts->MaxSamples,
1224 PIPE_BIND_SAMPLER_VIEW);
1225
1226 consts->MaxIntegerSamples =
1227 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1228 int_formats, consts->MaxSamples,
1229 PIPE_BIND_SAMPLER_VIEW);
1230
1231 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1232 consts->MaxFramebufferSamples =
1233 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1234 void_formats, 32,
1235 PIPE_BIND_RENDER_TARGET);
1236
1237 if (extensions->AMD_framebuffer_multisample_advanced) {
1238 /* AMD_framebuffer_multisample_advanced */
1239 /* This can be greater than storage samples. */
1240 consts->MaxColorFramebufferSamples =
1241 get_max_samples_for_formats_advanced(screen,
1242 ARRAY_SIZE(color_formats),
1243 color_formats, 16,
1244 consts->MaxSamples,
1245 PIPE_BIND_RENDER_TARGET);
1246
1247 /* If the driver supports N color samples, it means it supports
1248 * N samples and N storage samples. N samples >= N storage
1249 * samples.
1250 */
1251 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1252 consts->MaxDepthStencilFramebufferSamples =
1253 consts->MaxDepthTextureSamples;
1254
1255 assert(consts->MaxColorFramebufferSamples >=
1256 consts->MaxDepthStencilFramebufferSamples);
1257 assert(consts->MaxDepthStencilFramebufferSamples >=
1258 consts->MaxColorFramebufferStorageSamples);
1259
1260 consts->NumSupportedMultisampleModes = 0;
1261
1262 unsigned depth_samples_supported = 0;
1263
1264 for (unsigned samples = 2;
1265 samples <= consts->MaxDepthStencilFramebufferSamples;
1266 samples++) {
1267 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1268 PIPE_TEXTURE_2D, samples, samples,
1269 PIPE_BIND_DEPTH_STENCIL))
1270 depth_samples_supported |= 1 << samples;
1271 }
1272
1273 for (unsigned samples = 2;
1274 samples <= consts->MaxColorFramebufferSamples;
1275 samples++) {
1276 for (unsigned depth_samples = 2;
1277 depth_samples <= samples; depth_samples++) {
1278 if (!(depth_samples_supported & (1 << depth_samples)))
1279 continue;
1280
1281 for (unsigned storage_samples = 2;
1282 storage_samples <= depth_samples; storage_samples++) {
1283 if (screen->is_format_supported(screen,
1284 PIPE_FORMAT_R8G8B8A8_UNORM,
1285 PIPE_TEXTURE_2D,
1286 samples,
1287 storage_samples,
1288 PIPE_BIND_RENDER_TARGET)) {
1289 unsigned i = consts->NumSupportedMultisampleModes;
1290
1291 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1292 consts->SupportedMultisampleModes[i].NumColorSamples =
1293 samples;
1294 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1295 storage_samples;
1296 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1297 depth_samples;
1298 consts->NumSupportedMultisampleModes++;
1299 }
1300 }
1301 }
1302 }
1303 }
1304 }
1305
1306 if (consts->MaxSamples >= 2) {
1307 /* Real MSAA support */
1308 extensions->EXT_framebuffer_multisample = GL_TRUE;
1309 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1310 }
1311 else if (consts->MaxSamples > 0 &&
1312 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1313 /* fake MSAA support */
1314 consts->FakeSWMSAA = GL_TRUE;
1315 extensions->EXT_framebuffer_multisample = GL_TRUE;
1316 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1317 extensions->ARB_texture_multisample = GL_TRUE;
1318 }
1319
1320 if (consts->MaxDualSourceDrawBuffers > 0 &&
1321 !options->disable_blend_func_extended)
1322 extensions->ARB_blend_func_extended = GL_TRUE;
1323
1324 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1325 extensions->ARB_timer_query) {
1326 extensions->EXT_timer_query = GL_TRUE;
1327 }
1328
1329 if (extensions->ARB_transform_feedback2 &&
1330 extensions->ARB_draw_instanced) {
1331 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1332 }
1333 if (options->force_glsl_extensions_warn)
1334 consts->ForceGLSLExtensionsWarn = 1;
1335
1336 if (options->disable_glsl_line_continuations)
1337 consts->DisableGLSLLineContinuations = 1;
1338
1339 if (options->allow_glsl_extension_directive_midshader)
1340 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1341
1342 if (options->allow_glsl_builtin_const_expression)
1343 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1344
1345 if (options->allow_glsl_relaxed_es)
1346 consts->AllowGLSLRelaxedES = GL_TRUE;
1347
1348 if (options->allow_glsl_layout_qualifier_on_function_parameters)
1349 consts->AllowLayoutQualifiersOnFunctionParameters = GL_TRUE;
1350
1351 consts->MinMapBufferAlignment =
1352 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1353
1354 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1355 if (api == API_OPENGL_COMPAT &&
1356 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1357 extensions->ARB_texture_buffer_object = GL_FALSE;
1358
1359 if (extensions->ARB_texture_buffer_object) {
1360 consts->MaxTextureBufferSize =
1361 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1362 (1u << 31) - 1);
1363 consts->TextureBufferOffsetAlignment =
1364 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1365
1366 if (consts->TextureBufferOffsetAlignment)
1367 extensions->ARB_texture_buffer_range = GL_TRUE;
1368
1369 init_format_extensions(screen, extensions, tbo_rgb32,
1370 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1371 PIPE_BIND_SAMPLER_VIEW);
1372 }
1373
1374 extensions->OES_texture_buffer =
1375 extensions->ARB_texture_buffer_object &&
1376 extensions->ARB_texture_buffer_range &&
1377 extensions->ARB_texture_buffer_object_rgb32 &&
1378 extensions->ARB_shader_image_load_store;
1379
1380 extensions->EXT_framebuffer_sRGB =
1381 screen->get_param(screen, PIPE_CAP_DEST_SURFACE_SRGB_CONTROL) &&
1382 extensions->EXT_sRGB;
1383
1384 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1385 * If the number of available texture indirections is very limited, then we
1386 * prefer to disable varying packing rather than run the risk of varying
1387 * packing preventing a shader from running.
1388 */
1389 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1390 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1391 /* We can't disable varying packing if transform feedback is available,
1392 * because transform feedback code assumes a packed varying layout.
1393 */
1394 if (!extensions->EXT_transform_feedback)
1395 consts->DisableVaryingPacking = GL_TRUE;
1396 }
1397
1398 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1399 if (consts->MaxViewports >= 16) {
1400 if (GLSLVersion >= 400) {
1401 consts->ViewportBounds.Min = -32768.0;
1402 consts->ViewportBounds.Max = 32767.0;
1403 } else {
1404 consts->ViewportBounds.Min = -16384.0;
1405 consts->ViewportBounds.Max = 16383.0;
1406 }
1407 extensions->ARB_viewport_array = GL_TRUE;
1408 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1409 if (extensions->AMD_vertex_shader_layer)
1410 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1411 }
1412
1413 if (extensions->AMD_vertex_shader_layer &&
1414 extensions->AMD_vertex_shader_viewport_index &&
1415 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1416 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1417
1418 /* ARB_framebuffer_no_attachments */
1419 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1420 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1421 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1422 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1423 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1424
1425 /* GL_ARB_ES3_compatibility.
1426 * Check requirements for GLSL ES 3.00.
1427 */
1428 if (GLSLVersion >= 130 &&
1429 extensions->ARB_uniform_buffer_object &&
1430 extensions->ARB_shader_bit_encoding &&
1431 extensions->NV_primitive_restart &&
1432 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1433 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1434 /* Requirements for ETC2 emulation. */
1435 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1436 PIPE_TEXTURE_2D, 0, 0,
1437 PIPE_BIND_SAMPLER_VIEW) &&
1438 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1439 PIPE_TEXTURE_2D, 0, 0,
1440 PIPE_BIND_SAMPLER_VIEW) &&
1441 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1442 PIPE_TEXTURE_2D, 0, 0,
1443 PIPE_BIND_SAMPLER_VIEW) &&
1444 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1445 PIPE_TEXTURE_2D, 0, 0,
1446 PIPE_BIND_SAMPLER_VIEW) &&
1447 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1448 PIPE_TEXTURE_2D, 0, 0,
1449 PIPE_BIND_SAMPLER_VIEW) &&
1450 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1451 PIPE_TEXTURE_2D, 0, 0,
1452 PIPE_BIND_SAMPLER_VIEW)) {
1453 extensions->ARB_ES3_compatibility = GL_TRUE;
1454 }
1455
1456 #ifdef HAVE_ST_VDPAU
1457 if (screen->get_video_param &&
1458 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1459 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1460 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1461 extensions->NV_vdpau_interop = GL_TRUE;
1462 }
1463 #endif
1464
1465 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1466 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1467 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1468 }
1469
1470 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1471 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1472 extensions->GREMEDY_string_marker = GL_TRUE;
1473
1474 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1475 int compute_supported_irs =
1476 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1477 PIPE_SHADER_CAP_SUPPORTED_IRS);
1478 if (compute_supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
1479 (1 << PIPE_SHADER_IR_NIR))) {
1480 enum pipe_shader_ir ir =
1481 (compute_supported_irs & PIPE_SHADER_IR_NIR) ?
1482 PIPE_SHADER_IR_NIR : PIPE_SHADER_IR_TGSI;
1483 uint64_t grid_size[3], block_size[3];
1484 uint64_t max_local_size, max_threads_per_block;
1485
1486 screen->get_compute_param(screen, ir,
1487 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1488 screen->get_compute_param(screen, ir,
1489 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1490 screen->get_compute_param(screen, ir,
1491 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1492 &max_threads_per_block);
1493 screen->get_compute_param(screen, ir,
1494 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1495 &max_local_size);
1496
1497 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1498 consts->MaxComputeSharedMemorySize = max_local_size;
1499
1500 for (i = 0; i < 3; i++) {
1501 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1502 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1503 }
1504
1505 extensions->ARB_compute_shader =
1506 extensions->ARB_shader_image_load_store &&
1507 extensions->ARB_shader_atomic_counters;
1508
1509 if (extensions->ARB_compute_shader) {
1510 uint64_t max_variable_threads_per_block = 0;
1511
1512 screen->get_compute_param(screen, ir,
1513 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1514 &max_variable_threads_per_block);
1515
1516 for (i = 0; i < 3; i++) {
1517 /* Clamp the values to avoid having a local work group size
1518 * greater than the maximum number of invocations.
1519 */
1520 consts->MaxComputeVariableGroupSize[i] =
1521 MIN2(consts->MaxComputeWorkGroupSize[i],
1522 max_variable_threads_per_block);
1523 }
1524 consts->MaxComputeVariableGroupInvocations =
1525 max_variable_threads_per_block;
1526
1527 extensions->ARB_compute_variable_group_size =
1528 max_variable_threads_per_block > 0;
1529 }
1530 }
1531 }
1532
1533 extensions->ARB_texture_float =
1534 extensions->OES_texture_half_float &&
1535 extensions->OES_texture_float;
1536
1537 if (extensions->EXT_texture_filter_anisotropic &&
1538 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1539 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1540
1541 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1542
1543 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1544 * there's no clean way of telling whether we would support ES 3.1 from
1545 * here, so copy the condition from compute_version_es2 here. A lot of
1546 * these are redunant, but simpler to just have a (near-)exact copy here.
1547 */
1548 extensions->ARB_ES3_1_compatibility =
1549 extensions->ARB_ES3_compatibility &&
1550 extensions->ARB_arrays_of_arrays &&
1551 extensions->ARB_compute_shader &&
1552 extensions->ARB_draw_indirect &&
1553 extensions->ARB_explicit_uniform_location &&
1554 extensions->ARB_framebuffer_no_attachments &&
1555 extensions->ARB_shader_atomic_counters &&
1556 extensions->ARB_shader_image_load_store &&
1557 extensions->ARB_shader_image_size &&
1558 extensions->ARB_shader_storage_buffer_object &&
1559 extensions->ARB_shading_language_packing &&
1560 extensions->ARB_stencil_texturing &&
1561 extensions->ARB_texture_multisample &&
1562 extensions->ARB_gpu_shader5 &&
1563 extensions->EXT_shader_integer_mix;
1564
1565 extensions->OES_texture_cube_map_array =
1566 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1567 extensions->OES_geometry_shader &&
1568 extensions->ARB_texture_cube_map_array;
1569
1570 extensions->OES_viewport_array =
1571 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1572 extensions->OES_geometry_shader &&
1573 extensions->ARB_viewport_array;
1574
1575 extensions->OES_primitive_bounding_box =
1576 extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310;
1577
1578 consts->NoPrimitiveBoundingBoxOutput = true;
1579
1580 extensions->ANDROID_extension_pack_es31a =
1581 extensions->KHR_texture_compression_astc_ldr &&
1582 extensions->KHR_blend_equation_advanced &&
1583 extensions->OES_sample_variables &&
1584 extensions->ARB_shader_image_load_store &&
1585 extensions->ARB_texture_stencil8 &&
1586 extensions->ARB_texture_multisample &&
1587 extensions->OES_copy_image &&
1588 extensions->ARB_draw_buffers_blend &&
1589 extensions->OES_geometry_shader &&
1590 extensions->ARB_gpu_shader5 &&
1591 extensions->OES_primitive_bounding_box &&
1592 extensions->ARB_tessellation_shader &&
1593 extensions->ARB_texture_border_clamp &&
1594 extensions->OES_texture_buffer &&
1595 extensions->OES_texture_cube_map_array &&
1596 extensions->EXT_texture_sRGB_decode;
1597
1598 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1599 * before overall versions are selected. Also it's actually a subset of ES
1600 * 3.2, since it doesn't require ASTC or advanced blending.
1601 */
1602 extensions->ARB_ES3_2_compatibility =
1603 extensions->ARB_ES3_1_compatibility &&
1604 extensions->KHR_robustness &&
1605 extensions->ARB_copy_image &&
1606 extensions->ARB_draw_buffers_blend &&
1607 extensions->ARB_draw_elements_base_vertex &&
1608 extensions->OES_geometry_shader &&
1609 extensions->ARB_gpu_shader5 &&
1610 extensions->ARB_sample_shading &&
1611 extensions->ARB_tessellation_shader &&
1612 extensions->ARB_texture_border_clamp &&
1613 extensions->OES_texture_buffer &&
1614 extensions->ARB_texture_cube_map_array &&
1615 extensions->ARB_texture_stencil8 &&
1616 extensions->ARB_texture_multisample;
1617
1618 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1619 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1620 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1621 float max_dilate;
1622 bool pre_snap_triangles, pre_snap_points_lines;
1623
1624 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1625
1626 pre_snap_triangles =
1627 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1628 pre_snap_points_lines =
1629 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1630
1631 extensions->NV_conservative_raster =
1632 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1633
1634 if (extensions->NV_conservative_raster) {
1635 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1636 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1637 extensions->NV_conservative_raster_pre_snap =
1638 pre_snap_triangles && pre_snap_points_lines;
1639 }
1640 }
1641 }