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gallium: Add PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL
[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 {
81 int supported_irs;
82 unsigned sh;
83 bool can_ubo = true;
84 int temp;
85
86 c->MaxTextureSize = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
87 c->MaxTextureSize = MIN2(c->MaxTextureSize, 1 << (MAX_TEXTURE_LEVELS - 1));
88
89 c->Max3DTextureLevels
90 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
91 MAX_3D_TEXTURE_LEVELS);
92
93 c->MaxCubeTextureLevels
94 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
95 MAX_CUBE_TEXTURE_LEVELS);
96
97 c->MaxTextureRectSize = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
98
99 c->MaxArrayTextureLayers
100 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
101
102 /* Define max viewport size and max renderbuffer size in terms of
103 * max texture size (note: max tex RECT size = max tex 2D size).
104 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
105 */
106 c->MaxViewportWidth =
107 c->MaxViewportHeight =
108 c->MaxRenderbufferSize = c->MaxTextureRectSize;
109
110 c->SubPixelBits =
111 screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
112 c->ViewportSubpixelBits =
113 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
114
115 c->MaxDrawBuffers = c->MaxColorAttachments =
116 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
117 1, MAX_DRAW_BUFFERS);
118
119 c->MaxDualSourceDrawBuffers =
120 _clamp(screen->get_param(screen,
121 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
122 0, MAX_DRAW_BUFFERS);
123
124 c->MaxLineWidth =
125 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
126 c->MaxLineWidthAA =
127 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
128
129 c->MaxPointSize =
130 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
131 c->MaxPointSizeAA =
132 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
133
134 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
135 * for non-aa sizes, but we can go down to 0.0 for aa points.
136 */
137 c->MinPointSize = 1.0f;
138 c->MinPointSizeAA = 0.0f;
139
140 c->MaxTextureMaxAnisotropy =
141 _maxf(2.0f,
142 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
143
144 c->MaxTextureLodBias =
145 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
146
147 c->QuadsFollowProvokingVertexConvention =
148 screen->get_param(screen,
149 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
150
151 c->MaxUniformBlockSize =
152 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
153 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
154 /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
155 * this is larger than INT_MAX - 100. Use a nicely aligned limit.
156 */
157 c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);
158
159 if (c->MaxUniformBlockSize < 16384) {
160 can_ubo = false;
161 }
162
163 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
164 struct gl_shader_compiler_options *options;
165 struct gl_program_constants *pc;
166 const nir_shader_compiler_options *nir_options = NULL;
167
168 if (screen->get_compiler_options) {
169 nir_options = (const nir_shader_compiler_options *)
170 screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
171 }
172
173 const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
174 pc = &c->Program[stage];
175 options = &c->ShaderCompilerOptions[stage];
176 c->ShaderCompilerOptions[stage].NirOptions = nir_options;
177
178 if (sh == PIPE_SHADER_COMPUTE) {
179 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
180 continue;
181 supported_irs =
182 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
183 if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
184 (1 << PIPE_SHADER_IR_NIR))))
185 continue;
186 }
187
188 pc->MaxTextureImageUnits =
189 _min(screen->get_shader_param(screen, sh,
190 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
191 MAX_TEXTURE_IMAGE_UNITS);
192
193 pc->MaxInstructions =
194 pc->MaxNativeInstructions =
195 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
196 pc->MaxAluInstructions =
197 pc->MaxNativeAluInstructions =
198 screen->get_shader_param(screen, sh,
199 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
200 pc->MaxTexInstructions =
201 pc->MaxNativeTexInstructions =
202 screen->get_shader_param(screen, sh,
203 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
204 pc->MaxTexIndirections =
205 pc->MaxNativeTexIndirections =
206 screen->get_shader_param(screen, sh,
207 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
208 pc->MaxAttribs =
209 pc->MaxNativeAttribs =
210 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
211 pc->MaxTemps =
212 pc->MaxNativeTemps =
213 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
214 pc->MaxAddressRegs =
215 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
216
217 pc->MaxUniformComponents =
218 screen->get_shader_param(screen, sh,
219 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
220 pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
221 MAX_UNIFORMS * 4);
222
223 /* For ARB programs, prog_src_register::Index is a signed 13-bit number.
224 * This gives us a limit of 4096 values - but we may need to generate
225 * internal values in addition to what the source program uses. So, we
226 * drop the limit one step lower, to 2048, to be safe.
227 */
228 pc->MaxParameters =
229 pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
230 pc->MaxInputComponents =
231 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
232 pc->MaxOutputComponents =
233 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
234
235
236 pc->MaxUniformBlocks =
237 screen->get_shader_param(screen, sh,
238 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
239 if (pc->MaxUniformBlocks)
240 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
241 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
242
243 pc->MaxCombinedUniformComponents =
244 pc->MaxUniformComponents +
245 (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
246
247 pc->MaxShaderStorageBlocks =
248 screen->get_shader_param(screen, sh,
249 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
250
251 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
252 if (temp) {
253 /*
254 * for separate atomic counters get the actual hw limits
255 * per stage on atomic counters and buffers
256 */
257 pc->MaxAtomicCounters = temp;
258 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
259 } else if (pc->MaxShaderStorageBlocks) {
260 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
261 /*
262 * without separate atomic counters, reserve half of the available
263 * SSBOs for atomic buffers, and the other half for normal SSBOs.
264 */
265 pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
266 pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
267 }
268 pc->MaxImageUniforms = screen->get_shader_param(
269 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
270
271 /* Gallium doesn't really care about local vs. env parameters so use the
272 * same limits.
273 */
274 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
275 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
276
277 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
278 pc->LowInt.RangeMin = 31;
279 pc->LowInt.RangeMax = 30;
280 pc->LowInt.Precision = 0;
281 pc->MediumInt = pc->HighInt = pc->LowInt;
282 }
283
284 /* TODO: make these more fine-grained if anyone needs it */
285 options->MaxIfDepth =
286 screen->get_shader_param(screen, sh,
287 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
288 options->EmitNoLoops =
289 !screen->get_shader_param(screen, sh,
290 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
291 options->EmitNoMainReturn =
292 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
293
294 options->EmitNoCont =
295 !screen->get_shader_param(screen, sh,
296 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
297
298 options->EmitNoIndirectInput =
299 !screen->get_shader_param(screen, sh,
300 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
301 options->EmitNoIndirectOutput =
302 !screen->get_shader_param(screen, sh,
303 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
304 options->EmitNoIndirectTemp =
305 !screen->get_shader_param(screen, sh,
306 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
307 options->EmitNoIndirectUniform =
308 !screen->get_shader_param(screen, sh,
309 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
310
311 if (pc->MaxNativeInstructions &&
312 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
313 can_ubo = false;
314 }
315
316 if (options->EmitNoLoops)
317 options->MaxUnrollIterations =
318 MIN2(screen->get_shader_param(screen, sh,
319 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
320 65536);
321 else
322 options->MaxUnrollIterations =
323 screen->get_shader_param(screen, sh,
324 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
325
326 if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
327 options->LowerCombinedClipCullDistance = true;
328
329 bool prefer_nir = PIPE_SHADER_IR_NIR ==
330 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);
331
332 /* NIR can do the lowering on our behalf and we'll get better results
333 * because it can actually optimize SSBO access.
334 */
335 options->LowerBufferInterfaceBlocks = !prefer_nir;
336 }
337
338 c->MaxUserAssignableUniformLocations =
339 c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
340 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
341 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
342 c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
343 c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
344
345 c->GLSLOptimizeConservatively =
346 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
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
564
565 /**
566 * Given a member \c x of struct gl_extensions, return offset of
567 * \c x in bytes.
568 */
569 #define o(x) offsetof(struct gl_extensions, x)
570
571
572 struct st_extension_cap_mapping {
573 int extension_offset;
574 int cap;
575 };
576
577 struct st_extension_format_mapping {
578 int extension_offset[2];
579 enum pipe_format format[32];
580
581 /* If TRUE, at least one format must be supported for the extensions to be
582 * advertised. If FALSE, all the formats must be supported. */
583 GLboolean need_at_least_one;
584 };
585
586 /**
587 * Enable extensions if certain pipe formats are supported by the driver.
588 * What extensions will be enabled and what formats must be supported is
589 * described by the array of st_extension_format_mapping.
590 *
591 * target and bind_flags are passed to is_format_supported.
592 */
593 static void
594 init_format_extensions(struct pipe_screen *screen,
595 struct gl_extensions *extensions,
596 const struct st_extension_format_mapping *mapping,
597 unsigned num_mappings,
598 enum pipe_texture_target target,
599 unsigned bind_flags)
600 {
601 GLboolean *extension_table = (GLboolean *) extensions;
602 unsigned i;
603 int j;
604 int num_formats = ARRAY_SIZE(mapping->format);
605 int num_ext = ARRAY_SIZE(mapping->extension_offset);
606
607 for (i = 0; i < num_mappings; i++) {
608 int num_supported = 0;
609
610 /* Examine each format in the list. */
611 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
612 if (screen->is_format_supported(screen, mapping[i].format[j],
613 target, 0, 0, bind_flags)) {
614 num_supported++;
615 }
616 }
617
618 if (!num_supported ||
619 (!mapping[i].need_at_least_one && num_supported != j)) {
620 continue;
621 }
622
623 /* Enable all extensions in the list. */
624 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
625 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
626 }
627 }
628
629
630 /**
631 * Given a list of formats and bind flags, return the maximum number
632 * of samples supported by any of those formats.
633 */
634 static unsigned
635 get_max_samples_for_formats(struct pipe_screen *screen,
636 unsigned num_formats,
637 const enum pipe_format *formats,
638 unsigned max_samples,
639 unsigned bind)
640 {
641 unsigned i, f;
642
643 for (i = max_samples; i > 0; --i) {
644 for (f = 0; f < num_formats; f++) {
645 if (screen->is_format_supported(screen, formats[f],
646 PIPE_TEXTURE_2D, i, i, bind)) {
647 return i;
648 }
649 }
650 }
651 return 0;
652 }
653
654 static unsigned
655 get_max_samples_for_formats_advanced(struct pipe_screen *screen,
656 unsigned num_formats,
657 const enum pipe_format *formats,
658 unsigned max_samples,
659 unsigned num_storage_samples,
660 unsigned bind)
661 {
662 unsigned i, f;
663
664 for (i = max_samples; i > 0; --i) {
665 for (f = 0; f < num_formats; f++) {
666 if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
667 i, num_storage_samples, bind)) {
668 return i;
669 }
670 }
671 }
672 return 0;
673 }
674
675 /**
676 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
677 * which GL extensions are supported.
678 * Quite a few extensions are always supported because they are standard
679 * features or can be built on top of other gallium features.
680 * Some fine tuning may still be needed.
681 */
682 void st_init_extensions(struct pipe_screen *screen,
683 struct gl_constants *consts,
684 struct gl_extensions *extensions,
685 struct st_config_options *options,
686 gl_api api)
687 {
688 unsigned i;
689 GLboolean *extension_table = (GLboolean *) extensions;
690
691 static const struct st_extension_cap_mapping cap_mapping[] = {
692 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
693 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
694 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
695 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
696 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
697 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
698 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
699 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
700 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
701 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
702 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
703 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
704 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
705 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
706 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
707 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
708 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
709 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
710 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
711 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
712 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
713 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
714 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
715 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
716 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
717 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
718 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
719 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
720 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
721 { o(ARB_sample_locations), PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS },
722 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
723 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
724 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
725 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
726 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
727 { o(EXT_shader_image_load_formatted), PIPE_CAP_IMAGE_LOAD_FORMATTED },
728 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
729 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
730 { o(ARB_shader_texture_lod), PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD },
731 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
732 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
733 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
734 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
735 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE },
736 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
737 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
738 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
739 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
740 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
741 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
742 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
743 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
744 { o(ARB_fragment_shader_interlock), PIPE_CAP_FRAGMENT_SHADER_INTERLOCK },
745
746 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
747 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
748 { o(EXT_disjoint_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
749 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
750 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
751 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
752 { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT },
753 { o(EXT_semaphore), PIPE_CAP_FENCE_SIGNAL },
754 { o(EXT_semaphore_fd), PIPE_CAP_FENCE_SIGNAL },
755 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
756 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
757 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
758 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
759 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
760 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
761
762 { o(AMD_depth_clamp_separate), PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE },
763 { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
764 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
765 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
766 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
767 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
768 { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
769 { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX },
770 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
771 { o(NV_compute_shader_derivatives), PIPE_CAP_COMPUTE_SHADER_DERIVATIVES },
772 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
773 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
774 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
775 { o(NV_shader_atomic_float), PIPE_CAP_TGSI_ATOMFADD },
776 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
777 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
778 /* GL_NV_point_sprite is not supported by gallium because we don't
779 * support the GL_POINT_SPRITE_R_MODE_NV option. */
780
781 { o(OES_standard_derivatives), PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES },
782 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
783 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
784 { o(OES_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
785 };
786
787 /* Required: render target and sampler support */
788 static const struct st_extension_format_mapping rendertarget_mapping[] = {
789 { { o(OES_texture_float) },
790 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
791
792 { { o(OES_texture_half_float) },
793 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
794
795 { { o(ARB_texture_rgb10_a2ui) },
796 { PIPE_FORMAT_R10G10B10A2_UINT,
797 PIPE_FORMAT_B10G10R10A2_UINT },
798 GL_TRUE }, /* at least one format must be supported */
799
800 { { o(EXT_sRGB) },
801 { PIPE_FORMAT_A8B8G8R8_SRGB,
802 PIPE_FORMAT_B8G8R8A8_SRGB,
803 PIPE_FORMAT_R8G8B8A8_SRGB },
804 GL_TRUE }, /* at least one format must be supported */
805
806 { { o(EXT_packed_float) },
807 { PIPE_FORMAT_R11G11B10_FLOAT } },
808
809 { { o(EXT_texture_integer) },
810 { PIPE_FORMAT_R32G32B32A32_UINT,
811 PIPE_FORMAT_R32G32B32A32_SINT } },
812
813 { { o(ARB_texture_rg) },
814 { PIPE_FORMAT_R8_UNORM,
815 PIPE_FORMAT_R8G8_UNORM } },
816
817 { { o(EXT_render_snorm) },
818 { PIPE_FORMAT_R8_SNORM,
819 PIPE_FORMAT_R8G8_SNORM,
820 PIPE_FORMAT_R8G8B8A8_SNORM,
821 PIPE_FORMAT_R16_SNORM,
822 PIPE_FORMAT_R16G16_SNORM,
823 PIPE_FORMAT_R16G16B16A16_SNORM } },
824 };
825
826 /* Required: render target, sampler, and blending */
827 static const struct st_extension_format_mapping rt_blendable[] = {
828 { { o(EXT_float_blend) },
829 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
830 };
831
832 /* Required: depth stencil and sampler support */
833 static const struct st_extension_format_mapping depthstencil_mapping[] = {
834 { { o(ARB_depth_buffer_float) },
835 { PIPE_FORMAT_Z32_FLOAT,
836 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
837 };
838
839 /* Required: sampler support */
840 static const struct st_extension_format_mapping texture_mapping[] = {
841 { { o(ARB_texture_compression_rgtc) },
842 { PIPE_FORMAT_RGTC1_UNORM,
843 PIPE_FORMAT_RGTC1_SNORM,
844 PIPE_FORMAT_RGTC2_UNORM,
845 PIPE_FORMAT_RGTC2_SNORM } },
846
847 { { o(EXT_texture_compression_latc) },
848 { PIPE_FORMAT_LATC1_UNORM,
849 PIPE_FORMAT_LATC1_SNORM,
850 PIPE_FORMAT_LATC2_UNORM,
851 PIPE_FORMAT_LATC2_SNORM } },
852
853 { { o(EXT_texture_compression_s3tc),
854 o(ANGLE_texture_compression_dxt) },
855 { PIPE_FORMAT_DXT1_RGB,
856 PIPE_FORMAT_DXT1_RGBA,
857 PIPE_FORMAT_DXT3_RGBA,
858 PIPE_FORMAT_DXT5_RGBA } },
859
860 { { o(EXT_texture_compression_s3tc_srgb) },
861 { PIPE_FORMAT_DXT1_SRGB,
862 PIPE_FORMAT_DXT1_SRGBA,
863 PIPE_FORMAT_DXT3_SRGBA,
864 PIPE_FORMAT_DXT5_SRGBA } },
865
866 { { o(ARB_texture_compression_bptc) },
867 { PIPE_FORMAT_BPTC_RGBA_UNORM,
868 PIPE_FORMAT_BPTC_SRGBA,
869 PIPE_FORMAT_BPTC_RGB_FLOAT,
870 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
871
872 { { o(KHR_texture_compression_astc_ldr),
873 o(KHR_texture_compression_astc_sliced_3d) },
874 { PIPE_FORMAT_ASTC_4x4,
875 PIPE_FORMAT_ASTC_5x4,
876 PIPE_FORMAT_ASTC_5x5,
877 PIPE_FORMAT_ASTC_6x5,
878 PIPE_FORMAT_ASTC_6x6,
879 PIPE_FORMAT_ASTC_8x5,
880 PIPE_FORMAT_ASTC_8x6,
881 PIPE_FORMAT_ASTC_8x8,
882 PIPE_FORMAT_ASTC_10x5,
883 PIPE_FORMAT_ASTC_10x6,
884 PIPE_FORMAT_ASTC_10x8,
885 PIPE_FORMAT_ASTC_10x10,
886 PIPE_FORMAT_ASTC_12x10,
887 PIPE_FORMAT_ASTC_12x12,
888 PIPE_FORMAT_ASTC_4x4_SRGB,
889 PIPE_FORMAT_ASTC_5x4_SRGB,
890 PIPE_FORMAT_ASTC_5x5_SRGB,
891 PIPE_FORMAT_ASTC_6x5_SRGB,
892 PIPE_FORMAT_ASTC_6x6_SRGB,
893 PIPE_FORMAT_ASTC_8x5_SRGB,
894 PIPE_FORMAT_ASTC_8x6_SRGB,
895 PIPE_FORMAT_ASTC_8x8_SRGB,
896 PIPE_FORMAT_ASTC_10x5_SRGB,
897 PIPE_FORMAT_ASTC_10x6_SRGB,
898 PIPE_FORMAT_ASTC_10x8_SRGB,
899 PIPE_FORMAT_ASTC_10x10_SRGB,
900 PIPE_FORMAT_ASTC_12x10_SRGB,
901 PIPE_FORMAT_ASTC_12x12_SRGB } },
902
903 /* ASTC software fallback support. */
904 { { o(KHR_texture_compression_astc_ldr),
905 o(KHR_texture_compression_astc_sliced_3d) },
906 { PIPE_FORMAT_R8G8B8A8_UNORM,
907 PIPE_FORMAT_R8G8B8A8_SRGB } },
908
909 { { o(EXT_texture_shared_exponent) },
910 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
911
912 { { o(EXT_texture_snorm) },
913 { PIPE_FORMAT_R8G8B8A8_SNORM } },
914
915 { { o(EXT_texture_sRGB),
916 o(EXT_texture_sRGB_decode) },
917 { PIPE_FORMAT_A8B8G8R8_SRGB,
918 PIPE_FORMAT_B8G8R8A8_SRGB,
919 PIPE_FORMAT_A8R8G8B8_SRGB,
920 PIPE_FORMAT_R8G8B8A8_SRGB},
921 GL_TRUE }, /* at least one format must be supported */
922
923 { { o(EXT_texture_sRGB_R8) },
924 { PIPE_FORMAT_R8_SRGB },
925 GL_TRUE },
926
927 { { o(EXT_texture_type_2_10_10_10_REV) },
928 { PIPE_FORMAT_R10G10B10A2_UNORM,
929 PIPE_FORMAT_B10G10R10A2_UNORM },
930 GL_TRUE }, /* at least one format must be supported */
931
932 { { o(ATI_texture_compression_3dc) },
933 { PIPE_FORMAT_LATC2_UNORM } },
934
935 { { o(MESA_ycbcr_texture) },
936 { PIPE_FORMAT_UYVY,
937 PIPE_FORMAT_YUYV },
938 GL_TRUE }, /* at least one format must be supported */
939
940 { { o(OES_compressed_ETC1_RGB8_texture) },
941 { PIPE_FORMAT_ETC1_RGB8,
942 PIPE_FORMAT_R8G8B8A8_UNORM },
943 GL_TRUE }, /* at least one format must be supported */
944
945 { { o(ARB_stencil_texturing),
946 o(ARB_texture_stencil8) },
947 { PIPE_FORMAT_X24S8_UINT,
948 PIPE_FORMAT_S8X24_UINT },
949 GL_TRUE }, /* at least one format must be supported */
950
951 { { o(AMD_compressed_ATC_texture) },
952 { PIPE_FORMAT_ATC_RGB,
953 PIPE_FORMAT_ATC_RGBA_EXPLICIT,
954 PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
955 };
956
957 /* Required: vertex fetch support. */
958 static const struct st_extension_format_mapping vertex_mapping[] = {
959 { { o(EXT_vertex_array_bgra) },
960 { PIPE_FORMAT_B8G8R8A8_UNORM } },
961 { { o(ARB_vertex_type_2_10_10_10_rev) },
962 { PIPE_FORMAT_R10G10B10A2_UNORM,
963 PIPE_FORMAT_B10G10R10A2_UNORM,
964 PIPE_FORMAT_R10G10B10A2_SNORM,
965 PIPE_FORMAT_B10G10R10A2_SNORM,
966 PIPE_FORMAT_R10G10B10A2_USCALED,
967 PIPE_FORMAT_B10G10R10A2_USCALED,
968 PIPE_FORMAT_R10G10B10A2_SSCALED,
969 PIPE_FORMAT_B10G10R10A2_SSCALED } },
970 { { o(ARB_vertex_type_10f_11f_11f_rev) },
971 { PIPE_FORMAT_R11G11B10_FLOAT } },
972 };
973
974 static const struct st_extension_format_mapping tbo_rgb32[] = {
975 { {o(ARB_texture_buffer_object_rgb32) },
976 { PIPE_FORMAT_R32G32B32_FLOAT,
977 PIPE_FORMAT_R32G32B32_UINT,
978 PIPE_FORMAT_R32G32B32_SINT,
979 } },
980 };
981
982 /*
983 * Extensions that are supported by all Gallium drivers:
984 */
985 extensions->ARB_ES2_compatibility = GL_TRUE;
986 extensions->ARB_depth_texture = GL_TRUE;
987 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
988 extensions->ARB_explicit_attrib_location = GL_TRUE;
989 extensions->ARB_explicit_uniform_location = GL_TRUE;
990 extensions->ARB_fragment_coord_conventions = GL_TRUE;
991 extensions->ARB_fragment_program = GL_TRUE;
992 extensions->ARB_fragment_program_shadow = GL_TRUE;
993 extensions->ARB_fragment_shader = GL_TRUE;
994 extensions->ARB_half_float_vertex = GL_TRUE;
995 extensions->ARB_internalformat_query = GL_TRUE;
996 extensions->ARB_internalformat_query2 = GL_TRUE;
997 extensions->ARB_map_buffer_range = GL_TRUE;
998 extensions->ARB_shadow = GL_TRUE;
999 extensions->ARB_sync = GL_TRUE;
1000 extensions->ARB_texture_border_clamp = GL_TRUE;
1001 extensions->ARB_texture_cube_map = GL_TRUE;
1002 extensions->ARB_texture_env_combine = GL_TRUE;
1003 extensions->ARB_texture_env_crossbar = GL_TRUE;
1004 extensions->ARB_texture_env_dot3 = GL_TRUE;
1005 extensions->ARB_vertex_program = GL_TRUE;
1006 extensions->ARB_vertex_shader = GL_TRUE;
1007
1008 extensions->EXT_blend_color = GL_TRUE;
1009 extensions->EXT_blend_func_separate = GL_TRUE;
1010 extensions->EXT_blend_minmax = GL_TRUE;
1011 extensions->EXT_gpu_program_parameters = GL_TRUE;
1012 extensions->EXT_pixel_buffer_object = GL_TRUE;
1013 extensions->EXT_point_parameters = GL_TRUE;
1014 extensions->EXT_provoking_vertex = GL_TRUE;
1015 extensions->EXT_stencil_two_side = GL_TRUE;
1016 extensions->EXT_texture_env_dot3 = GL_TRUE;
1017
1018 extensions->ATI_fragment_shader = GL_TRUE;
1019 extensions->ATI_texture_env_combine3 = GL_TRUE;
1020
1021 extensions->MESA_pack_invert = GL_TRUE;
1022
1023 extensions->NV_fog_distance = GL_TRUE;
1024 extensions->NV_texture_env_combine4 = GL_TRUE;
1025 extensions->NV_texture_rectangle = GL_TRUE;
1026
1027 extensions->OES_EGL_image = GL_TRUE;
1028 extensions->OES_EGL_image_external = GL_TRUE;
1029 extensions->OES_draw_texture = GL_TRUE;
1030
1031 /* Expose the extensions which directly correspond to gallium caps. */
1032 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
1033 if (screen->get_param(screen, cap_mapping[i].cap)) {
1034 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
1035 }
1036 }
1037
1038 /* Expose the extensions which directly correspond to gallium formats. */
1039 init_format_extensions(screen, extensions, rendertarget_mapping,
1040 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
1041 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
1042 init_format_extensions(screen, extensions, rt_blendable,
1043 ARRAY_SIZE(rt_blendable), PIPE_TEXTURE_2D,
1044 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
1045 PIPE_BIND_BLENDABLE);
1046 init_format_extensions(screen, extensions, depthstencil_mapping,
1047 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
1048 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
1049 init_format_extensions(screen, extensions, texture_mapping,
1050 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
1051 PIPE_BIND_SAMPLER_VIEW);
1052 init_format_extensions(screen, extensions, vertex_mapping,
1053 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
1054 PIPE_BIND_VERTEX_BUFFER);
1055
1056 /* Figure out GLSL support and set GLSLVersion to it. */
1057 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
1058 consts->GLSLVersionCompat =
1059 screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY);
1060
1061 const unsigned ESSLVersion =
1062 screen->get_param(screen, PIPE_CAP_ESSL_FEATURE_LEVEL);
1063 const unsigned GLSLVersion =
1064 api == API_OPENGL_COMPAT ? consts->GLSLVersionCompat :
1065 consts->GLSLVersion;
1066
1067 _mesa_override_glsl_version(consts);
1068
1069 if (options->force_glsl_version > 0 &&
1070 options->force_glsl_version <= GLSLVersion) {
1071 consts->ForceGLSLVersion = options->force_glsl_version;
1072 }
1073
1074 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
1075
1076 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
1077
1078 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
1079
1080 consts->dri_config_options_sha1 = options->config_options_sha1;
1081
1082 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
1083
1084 /* Technically we are turning on the EXT_gpu_shader5 extension,
1085 * ARB_gpu_shader5 does not exist in GLES, but this flag is what
1086 * switches on EXT_gpu_shader5:
1087 */
1088 if (api == API_OPENGLES2 && ESSLVersion >= 320)
1089 extensions->ARB_gpu_shader5 = GL_TRUE;
1090
1091 if (GLSLVersion >= 400)
1092 extensions->ARB_gpu_shader5 = GL_TRUE;
1093 if (GLSLVersion >= 410)
1094 extensions->ARB_shader_precision = GL_TRUE;
1095
1096 /* This extension needs full OpenGL 3.2, but we don't know if that's
1097 * supported at this point. Only check the GLSL version. */
1098 if (GLSLVersion >= 150 &&
1099 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
1100 extensions->AMD_vertex_shader_layer = GL_TRUE;
1101 }
1102
1103 if (GLSLVersion >= 140) {
1104 /* Since GLSL 1.40 has support for all of the features of gpu_shader4,
1105 * we can always expose it if the driver can do 140. Supporting
1106 * gpu_shader4 on drivers without GLSL 1.40 is left for a future
1107 * pipe cap.
1108 */
1109 extensions->EXT_gpu_shader4 = GL_TRUE;
1110 extensions->EXT_texture_buffer_object = GL_TRUE;
1111
1112 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
1113 extensions->ARB_enhanced_layouts = GL_TRUE;
1114 }
1115
1116 if (GLSLVersion >= 130) {
1117 consts->NativeIntegers = GL_TRUE;
1118 consts->MaxClipPlanes = 8;
1119
1120 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
1121 consts->VertexID_is_zero_based = GL_TRUE;
1122 }
1123
1124 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
1125 extensions->ARB_conservative_depth = GL_TRUE;
1126 extensions->ARB_shading_language_packing = GL_TRUE;
1127 extensions->OES_depth_texture_cube_map = GL_TRUE;
1128 extensions->ARB_shading_language_420pack = GL_TRUE;
1129 extensions->ARB_texture_query_levels = GL_TRUE;
1130
1131 extensions->ARB_shader_bit_encoding = GL_TRUE;
1132
1133 extensions->EXT_shader_integer_mix = GL_TRUE;
1134 extensions->ARB_arrays_of_arrays = GL_TRUE;
1135 extensions->MESA_shader_integer_functions = GL_TRUE;
1136 } else {
1137 /* Optional integer support for GLSL 1.2. */
1138 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1139 PIPE_SHADER_CAP_INTEGERS) &&
1140 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1141 PIPE_SHADER_CAP_INTEGERS)) {
1142 consts->NativeIntegers = GL_TRUE;
1143
1144 extensions->EXT_shader_integer_mix = GL_TRUE;
1145 }
1146
1147 /* Integer textures make no sense before GLSL 1.30 */
1148 extensions->EXT_texture_integer = GL_FALSE;
1149 }
1150
1151 consts->GLSLZeroInit = options->glsl_zero_init;
1152
1153 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1154
1155 /* Below are the cases which cannot be moved into tables easily. */
1156
1157 /* The compatibility profile also requires GLSLVersionCompat >= 400. */
1158 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1159 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0 &&
1160 (api != API_OPENGL_COMPAT || consts->GLSLVersionCompat >= 400)) {
1161 extensions->ARB_tessellation_shader = GL_TRUE;
1162 }
1163
1164 /* What this is really checking for is the ability to support multiple
1165 * invocations of a geometry shader. There is no separate cap for that, so
1166 * we check the GLSLVersion.
1167 */
1168 if (GLSLVersion >= 400 &&
1169 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1170 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1171 extensions->OES_geometry_shader = GL_TRUE;
1172 }
1173
1174 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1175 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1176 */
1177 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1178 extensions->ARB_gpu_shader5;
1179
1180 /* Maximum sample count. */
1181 {
1182 static const enum pipe_format color_formats[] = {
1183 PIPE_FORMAT_R8G8B8A8_UNORM,
1184 PIPE_FORMAT_B8G8R8A8_UNORM,
1185 PIPE_FORMAT_A8R8G8B8_UNORM,
1186 PIPE_FORMAT_A8B8G8R8_UNORM,
1187 };
1188 static const enum pipe_format depth_formats[] = {
1189 PIPE_FORMAT_Z16_UNORM,
1190 PIPE_FORMAT_Z24X8_UNORM,
1191 PIPE_FORMAT_X8Z24_UNORM,
1192 PIPE_FORMAT_Z32_UNORM,
1193 PIPE_FORMAT_Z32_FLOAT
1194 };
1195 static const enum pipe_format int_formats[] = {
1196 PIPE_FORMAT_R8G8B8A8_SINT
1197 };
1198 static const enum pipe_format void_formats[] = {
1199 PIPE_FORMAT_NONE
1200 };
1201
1202 consts->MaxSamples =
1203 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1204 color_formats, 16,
1205 PIPE_BIND_RENDER_TARGET);
1206
1207 consts->MaxImageSamples =
1208 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1209 color_formats, 16,
1210 PIPE_BIND_SHADER_IMAGE);
1211
1212 consts->MaxColorTextureSamples =
1213 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1214 color_formats, consts->MaxSamples,
1215 PIPE_BIND_SAMPLER_VIEW);
1216
1217 consts->MaxDepthTextureSamples =
1218 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1219 depth_formats, consts->MaxSamples,
1220 PIPE_BIND_SAMPLER_VIEW);
1221
1222 consts->MaxIntegerSamples =
1223 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1224 int_formats, consts->MaxSamples,
1225 PIPE_BIND_SAMPLER_VIEW);
1226
1227 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1228 consts->MaxFramebufferSamples =
1229 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1230 void_formats, 32,
1231 PIPE_BIND_RENDER_TARGET);
1232
1233 if (extensions->AMD_framebuffer_multisample_advanced) {
1234 /* AMD_framebuffer_multisample_advanced */
1235 /* This can be greater than storage samples. */
1236 consts->MaxColorFramebufferSamples =
1237 get_max_samples_for_formats_advanced(screen,
1238 ARRAY_SIZE(color_formats),
1239 color_formats, 16,
1240 consts->MaxSamples,
1241 PIPE_BIND_RENDER_TARGET);
1242
1243 /* If the driver supports N color samples, it means it supports
1244 * N samples and N storage samples. N samples >= N storage
1245 * samples.
1246 */
1247 consts->MaxColorFramebufferStorageSamples = consts->MaxSamples;
1248 consts->MaxDepthStencilFramebufferSamples =
1249 consts->MaxDepthTextureSamples;
1250
1251 assert(consts->MaxColorFramebufferSamples >=
1252 consts->MaxDepthStencilFramebufferSamples);
1253 assert(consts->MaxDepthStencilFramebufferSamples >=
1254 consts->MaxColorFramebufferStorageSamples);
1255
1256 consts->NumSupportedMultisampleModes = 0;
1257
1258 unsigned depth_samples_supported = 0;
1259
1260 for (unsigned samples = 2;
1261 samples <= consts->MaxDepthStencilFramebufferSamples;
1262 samples++) {
1263 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
1264 PIPE_TEXTURE_2D, samples, samples,
1265 PIPE_BIND_DEPTH_STENCIL))
1266 depth_samples_supported |= 1 << samples;
1267 }
1268
1269 for (unsigned samples = 2;
1270 samples <= consts->MaxColorFramebufferSamples;
1271 samples++) {
1272 for (unsigned depth_samples = 2;
1273 depth_samples <= samples; depth_samples++) {
1274 if (!(depth_samples_supported & (1 << depth_samples)))
1275 continue;
1276
1277 for (unsigned storage_samples = 2;
1278 storage_samples <= depth_samples; storage_samples++) {
1279 if (screen->is_format_supported(screen,
1280 PIPE_FORMAT_R8G8B8A8_UNORM,
1281 PIPE_TEXTURE_2D,
1282 samples,
1283 storage_samples,
1284 PIPE_BIND_RENDER_TARGET)) {
1285 unsigned i = consts->NumSupportedMultisampleModes;
1286
1287 assert(i < ARRAY_SIZE(consts->SupportedMultisampleModes));
1288 consts->SupportedMultisampleModes[i].NumColorSamples =
1289 samples;
1290 consts->SupportedMultisampleModes[i].NumColorStorageSamples =
1291 storage_samples;
1292 consts->SupportedMultisampleModes[i].NumDepthStencilSamples =
1293 depth_samples;
1294 consts->NumSupportedMultisampleModes++;
1295 }
1296 }
1297 }
1298 }
1299 }
1300 }
1301
1302 if (consts->MaxSamples >= 2) {
1303 /* Real MSAA support */
1304 extensions->EXT_framebuffer_multisample = GL_TRUE;
1305 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1306 }
1307 else if (consts->MaxSamples > 0 &&
1308 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1309 /* fake MSAA support */
1310 consts->FakeSWMSAA = GL_TRUE;
1311 extensions->EXT_framebuffer_multisample = GL_TRUE;
1312 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1313 extensions->ARB_texture_multisample = GL_TRUE;
1314 }
1315
1316 if (consts->MaxDualSourceDrawBuffers > 0 &&
1317 !options->disable_blend_func_extended)
1318 extensions->ARB_blend_func_extended = GL_TRUE;
1319
1320 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1321 extensions->ARB_timer_query) {
1322 extensions->EXT_timer_query = GL_TRUE;
1323 }
1324
1325 if (extensions->ARB_transform_feedback2 &&
1326 extensions->ARB_draw_instanced) {
1327 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1328 }
1329 if (options->force_glsl_extensions_warn)
1330 consts->ForceGLSLExtensionsWarn = 1;
1331
1332 if (options->disable_glsl_line_continuations)
1333 consts->DisableGLSLLineContinuations = 1;
1334
1335 if (options->allow_glsl_extension_directive_midshader)
1336 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1337
1338 if (options->allow_glsl_builtin_const_expression)
1339 consts->AllowGLSLBuiltinConstantExpression = GL_TRUE;
1340
1341 if (options->allow_glsl_relaxed_es)
1342 consts->AllowGLSLRelaxedES = GL_TRUE;
1343
1344 if (options->allow_glsl_layout_qualifier_on_function_parameters)
1345 consts->AllowLayoutQualifiersOnFunctionParameters = GL_TRUE;
1346
1347 consts->MinMapBufferAlignment =
1348 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1349
1350 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1351 if (api == API_OPENGL_COMPAT &&
1352 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1353 extensions->ARB_texture_buffer_object = GL_FALSE;
1354
1355 if (extensions->ARB_texture_buffer_object) {
1356 consts->MaxTextureBufferSize =
1357 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1358 (1u << 31) - 1);
1359 consts->TextureBufferOffsetAlignment =
1360 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1361
1362 if (consts->TextureBufferOffsetAlignment)
1363 extensions->ARB_texture_buffer_range = GL_TRUE;
1364
1365 init_format_extensions(screen, extensions, tbo_rgb32,
1366 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1367 PIPE_BIND_SAMPLER_VIEW);
1368 }
1369
1370 extensions->OES_texture_buffer =
1371 extensions->ARB_texture_buffer_object &&
1372 extensions->ARB_texture_buffer_range &&
1373 extensions->ARB_texture_buffer_object_rgb32 &&
1374 extensions->ARB_shader_image_load_store;
1375
1376 extensions->EXT_framebuffer_sRGB =
1377 screen->get_param(screen, PIPE_CAP_DEST_SURFACE_SRGB_CONTROL) &&
1378 extensions->EXT_sRGB;
1379
1380 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1381 * If the number of available texture indirections is very limited, then we
1382 * prefer to disable varying packing rather than run the risk of varying
1383 * packing preventing a shader from running.
1384 */
1385 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1386 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1387 /* We can't disable varying packing if transform feedback is available,
1388 * because transform feedback code assumes a packed varying layout.
1389 */
1390 if (!extensions->EXT_transform_feedback)
1391 consts->DisableVaryingPacking = GL_TRUE;
1392 }
1393
1394 unsigned max_fb_fetch_rts = screen->get_param(screen, PIPE_CAP_FBFETCH);
1395 bool coherent_fb_fetch =
1396 screen->get_param(screen, PIPE_CAP_FBFETCH_COHERENT);
1397
1398 if (max_fb_fetch_rts > 0) {
1399 extensions->KHR_blend_equation_advanced = true;
1400 extensions->KHR_blend_equation_advanced_coherent = coherent_fb_fetch;
1401
1402 if (max_fb_fetch_rts >=
1403 screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS)) {
1404 extensions->EXT_shader_framebuffer_fetch_non_coherent = true;
1405 extensions->EXT_shader_framebuffer_fetch = coherent_fb_fetch;
1406 }
1407 }
1408
1409 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1410 if (consts->MaxViewports >= 16) {
1411 if (GLSLVersion >= 400) {
1412 consts->ViewportBounds.Min = -32768.0;
1413 consts->ViewportBounds.Max = 32767.0;
1414 } else {
1415 consts->ViewportBounds.Min = -16384.0;
1416 consts->ViewportBounds.Max = 16383.0;
1417 }
1418 extensions->ARB_viewport_array = GL_TRUE;
1419 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1420 if (extensions->AMD_vertex_shader_layer)
1421 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1422 }
1423
1424 if (extensions->AMD_vertex_shader_layer &&
1425 extensions->AMD_vertex_shader_viewport_index &&
1426 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1427 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1428
1429 /* ARB_framebuffer_no_attachments */
1430 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1431 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1432 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1433 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1434 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1435
1436 /* GL_ARB_ES3_compatibility.
1437 * Check requirements for GLSL ES 3.00.
1438 */
1439 if (GLSLVersion >= 130 &&
1440 extensions->ARB_uniform_buffer_object &&
1441 extensions->ARB_shader_bit_encoding &&
1442 extensions->NV_primitive_restart &&
1443 screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1444 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS) >= 16 &&
1445 /* Requirements for ETC2 emulation. */
1446 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1447 PIPE_TEXTURE_2D, 0, 0,
1448 PIPE_BIND_SAMPLER_VIEW) &&
1449 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
1450 PIPE_TEXTURE_2D, 0, 0,
1451 PIPE_BIND_SAMPLER_VIEW) &&
1452 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1453 PIPE_TEXTURE_2D, 0, 0,
1454 PIPE_BIND_SAMPLER_VIEW) &&
1455 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1456 PIPE_TEXTURE_2D, 0, 0,
1457 PIPE_BIND_SAMPLER_VIEW) &&
1458 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1459 PIPE_TEXTURE_2D, 0, 0,
1460 PIPE_BIND_SAMPLER_VIEW) &&
1461 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1462 PIPE_TEXTURE_2D, 0, 0,
1463 PIPE_BIND_SAMPLER_VIEW)) {
1464 extensions->ARB_ES3_compatibility = GL_TRUE;
1465 }
1466
1467 #ifdef HAVE_ST_VDPAU
1468 if (screen->get_video_param &&
1469 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1470 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1471 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1472 extensions->NV_vdpau_interop = GL_TRUE;
1473 }
1474 #endif
1475
1476 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1477 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1478 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1479 }
1480
1481 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1482 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1483 extensions->GREMEDY_string_marker = GL_TRUE;
1484
1485 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1486 int compute_supported_irs =
1487 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1488 PIPE_SHADER_CAP_SUPPORTED_IRS);
1489 if (compute_supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
1490 (1 << PIPE_SHADER_IR_NIR))) {
1491 enum pipe_shader_ir ir =
1492 (compute_supported_irs & PIPE_SHADER_IR_NIR) ?
1493 PIPE_SHADER_IR_NIR : PIPE_SHADER_IR_TGSI;
1494 uint64_t grid_size[3], block_size[3];
1495 uint64_t max_local_size, max_threads_per_block;
1496
1497 screen->get_compute_param(screen, ir,
1498 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1499 screen->get_compute_param(screen, ir,
1500 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1501 screen->get_compute_param(screen, ir,
1502 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1503 &max_threads_per_block);
1504 screen->get_compute_param(screen, ir,
1505 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1506 &max_local_size);
1507
1508 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1509 consts->MaxComputeSharedMemorySize = max_local_size;
1510
1511 for (i = 0; i < 3; i++) {
1512 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1513 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1514 }
1515
1516 extensions->ARB_compute_shader =
1517 extensions->ARB_shader_image_load_store &&
1518 extensions->ARB_shader_atomic_counters;
1519
1520 if (extensions->ARB_compute_shader) {
1521 uint64_t max_variable_threads_per_block = 0;
1522
1523 screen->get_compute_param(screen, ir,
1524 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1525 &max_variable_threads_per_block);
1526
1527 for (i = 0; i < 3; i++) {
1528 /* Clamp the values to avoid having a local work group size
1529 * greater than the maximum number of invocations.
1530 */
1531 consts->MaxComputeVariableGroupSize[i] =
1532 MIN2(consts->MaxComputeWorkGroupSize[i],
1533 max_variable_threads_per_block);
1534 }
1535 consts->MaxComputeVariableGroupInvocations =
1536 max_variable_threads_per_block;
1537
1538 extensions->ARB_compute_variable_group_size =
1539 max_variable_threads_per_block > 0;
1540 }
1541 }
1542 }
1543
1544 extensions->ARB_texture_float =
1545 extensions->OES_texture_half_float &&
1546 extensions->OES_texture_float;
1547
1548 if (extensions->EXT_texture_filter_anisotropic &&
1549 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1550 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1551
1552 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1553
1554 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1555 * there's no clean way of telling whether we would support ES 3.1 from
1556 * here, so copy the condition from compute_version_es2 here. A lot of
1557 * these are redunant, but simpler to just have a (near-)exact copy here.
1558 */
1559 extensions->ARB_ES3_1_compatibility =
1560 extensions->ARB_ES3_compatibility &&
1561 extensions->ARB_arrays_of_arrays &&
1562 extensions->ARB_compute_shader &&
1563 extensions->ARB_draw_indirect &&
1564 extensions->ARB_explicit_uniform_location &&
1565 extensions->ARB_framebuffer_no_attachments &&
1566 extensions->ARB_shader_atomic_counters &&
1567 extensions->ARB_shader_image_load_store &&
1568 extensions->ARB_shader_image_size &&
1569 extensions->ARB_shader_storage_buffer_object &&
1570 extensions->ARB_shading_language_packing &&
1571 extensions->ARB_stencil_texturing &&
1572 extensions->ARB_texture_multisample &&
1573 extensions->ARB_gpu_shader5 &&
1574 extensions->EXT_shader_integer_mix;
1575
1576 extensions->OES_texture_cube_map_array =
1577 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1578 extensions->OES_geometry_shader &&
1579 extensions->ARB_texture_cube_map_array;
1580
1581 extensions->OES_viewport_array =
1582 (extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310) &&
1583 extensions->OES_geometry_shader &&
1584 extensions->ARB_viewport_array;
1585
1586 extensions->OES_primitive_bounding_box =
1587 extensions->ARB_ES3_1_compatibility || ESSLVersion >= 310;
1588
1589 consts->NoPrimitiveBoundingBoxOutput = true;
1590
1591 extensions->ANDROID_extension_pack_es31a =
1592 extensions->KHR_texture_compression_astc_ldr &&
1593 extensions->KHR_blend_equation_advanced &&
1594 extensions->OES_sample_variables &&
1595 extensions->ARB_shader_image_load_store &&
1596 extensions->ARB_texture_stencil8 &&
1597 extensions->ARB_texture_multisample &&
1598 extensions->OES_copy_image &&
1599 extensions->ARB_draw_buffers_blend &&
1600 extensions->OES_geometry_shader &&
1601 extensions->ARB_gpu_shader5 &&
1602 extensions->OES_primitive_bounding_box &&
1603 extensions->ARB_tessellation_shader &&
1604 extensions->ARB_texture_border_clamp &&
1605 extensions->OES_texture_buffer &&
1606 extensions->OES_texture_cube_map_array &&
1607 extensions->EXT_texture_sRGB_decode;
1608
1609 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1610 * before overall versions are selected. Also it's actually a subset of ES
1611 * 3.2, since it doesn't require ASTC or advanced blending.
1612 */
1613 extensions->ARB_ES3_2_compatibility =
1614 extensions->ARB_ES3_1_compatibility &&
1615 extensions->KHR_robustness &&
1616 extensions->ARB_copy_image &&
1617 extensions->ARB_draw_buffers_blend &&
1618 extensions->ARB_draw_elements_base_vertex &&
1619 extensions->OES_geometry_shader &&
1620 extensions->ARB_gpu_shader5 &&
1621 extensions->ARB_sample_shading &&
1622 extensions->ARB_tessellation_shader &&
1623 extensions->ARB_texture_border_clamp &&
1624 extensions->OES_texture_buffer &&
1625 extensions->ARB_texture_cube_map_array &&
1626 extensions->ARB_texture_stencil8 &&
1627 extensions->ARB_texture_multisample;
1628
1629 if (screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES) &&
1630 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES) &&
1631 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE)) {
1632 float max_dilate;
1633 bool pre_snap_triangles, pre_snap_points_lines;
1634
1635 max_dilate = screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
1636
1637 pre_snap_triangles =
1638 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES);
1639 pre_snap_points_lines =
1640 screen->get_param(screen, PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES);
1641
1642 extensions->NV_conservative_raster =
1643 screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS) > 1;
1644
1645 if (extensions->NV_conservative_raster) {
1646 extensions->NV_conservative_raster_dilate = max_dilate >= 0.75;
1647 extensions->NV_conservative_raster_pre_snap_triangles = pre_snap_triangles;
1648 extensions->NV_conservative_raster_pre_snap =
1649 pre_snap_triangles && pre_snap_points_lines;
1650 }
1651 }
1652 }