projects / mesa.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
gallium: remove PIPE_CAP_TEXTURE_SHADOW_MAP
[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 "main/imports.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/version.h"
33
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_math.h"
38
39 #include "st_context.h"
40 #include "st_debug.h"
41 #include "st_extensions.h"
42 #include "st_format.h"
43
44
45 /*
46 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
47 * avoid evaluating arguments (which are often function calls) more than once.
48 */
49
50 static unsigned _min(unsigned a, unsigned b)
51 {
52 return (a < b) ? a : b;
53 }
54
55 static float _maxf(float a, float b)
56 {
57 return (a > b) ? a : b;
58 }
59
60 static int _clamp(int a, int min, int max)
61 {
62 if (a < min)
63 return min;
64 else if (a > max)
65 return max;
66 else
67 return a;
68 }
69
70
71 /**
72 * Query driver to get implementation limits.
73 * Note that we have to limit/clamp against Mesa's internal limits too.
74 */
75 void st_init_limits(struct pipe_screen *screen,
76 struct gl_constants *c, struct gl_extensions *extensions)
77 {
78 int supported_irs;
79 unsigned sh;
80 boolean can_ubo = TRUE;
81 int temp;
82 bool ssbo_atomic = true;
83
84 c->MaxTextureLevels
85 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
86 MAX_TEXTURE_LEVELS);
87
88 c->Max3DTextureLevels
89 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
90 MAX_3D_TEXTURE_LEVELS);
91
92 c->MaxCubeTextureLevels
93 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
94 MAX_CUBE_TEXTURE_LEVELS);
95
96 c->MaxTextureRectSize
97 = _min(1 << (c->MaxTextureLevels - 1), 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->ViewportSubpixelBits =
111 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
112
113 c->MaxDrawBuffers = c->MaxColorAttachments =
114 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
115 1, MAX_DRAW_BUFFERS);
116
117 c->MaxDualSourceDrawBuffers =
118 _clamp(screen->get_param(screen,
119 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
120 0, MAX_DRAW_BUFFERS);
121
122 c->MaxLineWidth =
123 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
124 c->MaxLineWidthAA =
125 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
126
127 c->MaxPointSize =
128 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
129 c->MaxPointSizeAA =
130 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
131
132 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
133 * for non-aa sizes, but we can go down to 0.0 for aa points.
134 */
135 c->MinPointSize = 1.0f;
136 c->MinPointSizeAA = 0.0f;
137
138 c->MaxTextureMaxAnisotropy =
139 _maxf(2.0f,
140 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
141
142 c->MaxTextureLodBias =
143 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
144
145 c->QuadsFollowProvokingVertexConvention =
146 screen->get_param(screen,
147 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
148
149 c->MaxUniformBlockSize =
150 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
151 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
152 if (c->MaxUniformBlockSize < 16384) {
153 can_ubo = FALSE;
154 }
155
156 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
157 struct gl_shader_compiler_options *options;
158 struct gl_program_constants *pc;
159
160 switch (sh) {
161 case PIPE_SHADER_FRAGMENT:
162 pc = &c->Program[MESA_SHADER_FRAGMENT];
163 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
164 break;
165 case PIPE_SHADER_VERTEX:
166 pc = &c->Program[MESA_SHADER_VERTEX];
167 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
168 break;
169 case PIPE_SHADER_GEOMETRY:
170 pc = &c->Program[MESA_SHADER_GEOMETRY];
171 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
172 break;
173 case PIPE_SHADER_TESS_CTRL:
174 pc = &c->Program[MESA_SHADER_TESS_CTRL];
175 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
176 break;
177 case PIPE_SHADER_TESS_EVAL:
178 pc = &c->Program[MESA_SHADER_TESS_EVAL];
179 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
180 break;
181 case PIPE_SHADER_COMPUTE:
182 pc = &c->Program[MESA_SHADER_COMPUTE];
183 options = &c->ShaderCompilerOptions[MESA_SHADER_COMPUTE];
184
185 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
186 continue;
187 supported_irs =
188 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
189 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
190 continue;
191 break;
192 default:
193 assert(0);
194 }
195
196 pc->MaxTextureImageUnits =
197 _min(screen->get_shader_param(screen, sh,
198 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
199 MAX_TEXTURE_IMAGE_UNITS);
200
201 pc->MaxInstructions =
202 pc->MaxNativeInstructions =
203 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
204 pc->MaxAluInstructions =
205 pc->MaxNativeAluInstructions =
206 screen->get_shader_param(screen, sh,
207 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
208 pc->MaxTexInstructions =
209 pc->MaxNativeTexInstructions =
210 screen->get_shader_param(screen, sh,
211 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
212 pc->MaxTexIndirections =
213 pc->MaxNativeTexIndirections =
214 screen->get_shader_param(screen, sh,
215 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
216 pc->MaxAttribs =
217 pc->MaxNativeAttribs =
218 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
219 pc->MaxTemps =
220 pc->MaxNativeTemps =
221 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
222 pc->MaxAddressRegs =
223 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
224 pc->MaxParameters =
225 pc->MaxNativeParameters =
226 screen->get_shader_param(screen, sh,
227 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
228 pc->MaxInputComponents =
229 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
230 pc->MaxOutputComponents =
231 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
232
233 pc->MaxUniformComponents =
234 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
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 = (pc->MaxUniformComponents +
244 c->MaxUniformBlockSize / 4 *
245 pc->MaxUniformBlocks);
246
247 temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
248 if (temp) {
249 /*
250 * for separate atomic counters get the actual hw limits
251 * per stage on atomic counters and buffers
252 */
253 ssbo_atomic = false;
254 pc->MaxAtomicCounters = temp;
255 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
256 pc->MaxShaderStorageBlocks = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
257 } else {
258 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
259 pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
260 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
261 }
262 pc->MaxImageUniforms = screen->get_shader_param(
263 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
264
265 /* Gallium doesn't really care about local vs. env parameters so use the
266 * same limits.
267 */
268 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
269 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
270
271 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
272 pc->LowInt.RangeMin = 31;
273 pc->LowInt.RangeMax = 30;
274 pc->LowInt.Precision = 0;
275 pc->MediumInt = pc->HighInt = pc->LowInt;
276 }
277
278 /* TODO: make these more fine-grained if anyone needs it */
279 options->MaxIfDepth =
280 screen->get_shader_param(screen, sh,
281 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
282 options->EmitNoLoops =
283 !screen->get_shader_param(screen, sh,
284 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
285 options->EmitNoMainReturn =
286 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
287
288 options->EmitNoCont =
289 !screen->get_shader_param(screen, sh,
290 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
291
292 options->EmitNoIndirectInput =
293 !screen->get_shader_param(screen, sh,
294 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
295 options->EmitNoIndirectOutput =
296 !screen->get_shader_param(screen, sh,
297 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
298 options->EmitNoIndirectTemp =
299 !screen->get_shader_param(screen, sh,
300 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
301 options->EmitNoIndirectUniform =
302 !screen->get_shader_param(screen, sh,
303 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
304
305 if (pc->MaxNativeInstructions &&
306 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
307 can_ubo = FALSE;
308 }
309
310 if (options->EmitNoLoops)
311 options->MaxUnrollIterations =
312 MIN2(screen->get_shader_param(screen, sh,
313 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
314 65536);
315 else
316 options->MaxUnrollIterations =
317 screen->get_shader_param(screen, sh,
318 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
319
320 options->LowerCombinedClipCullDistance = true;
321 options->LowerBufferInterfaceBlocks = true;
322 }
323
324 c->GLSLOptimizeConservatively =
325 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
326 c->LowerTessLevel = true;
327 c->LowerCsDerivedVariables = true;
328 c->PrimitiveRestartForPatches =
329 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
330
331 c->MaxCombinedTextureImageUnits =
332 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
333 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
334 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
335 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
336 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
337 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
338 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
339
340 /* This depends on program constants. */
341 c->MaxTextureCoordUnits
342 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
343 MAX_TEXTURE_COORD_UNITS);
344
345 c->MaxTextureUnits =
346 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
347 c->MaxTextureCoordUnits);
348
349 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
350 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
351
352 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
353 * of inputs. It's always 2 colors + N generic inputs. */
354 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
355 PIPE_SHADER_CAP_MAX_INPUTS);
356 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
357 c->MaxGeometryOutputVertices =
358 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
359 c->MaxGeometryTotalOutputComponents =
360 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
361 c->MaxTessPatchComponents =
362 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
363 MAX_VARYING) * 4;
364
365 c->MinProgramTexelOffset =
366 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
367 c->MaxProgramTexelOffset =
368 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
369
370 c->MaxProgramTextureGatherComponents =
371 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
372 c->MinProgramTextureGatherOffset =
373 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
374 c->MaxProgramTextureGatherOffset =
375 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
376
377 c->MaxTransformFeedbackBuffers =
378 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
379 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
380 MAX_FEEDBACK_BUFFERS);
381 c->MaxTransformFeedbackSeparateComponents =
382 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
383 c->MaxTransformFeedbackInterleavedComponents =
384 screen->get_param(screen,
385 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
386 c->MaxVertexStreams =
387 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
388
389 /* The vertex stream must fit into pipe_stream_output_info::stream */
390 assert(c->MaxVertexStreams <= 4);
391
392 c->MaxVertexAttribStride
393 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
394
395 c->StripTextureBorder = GL_TRUE;
396
397 c->GLSLSkipStrictMaxUniformLimitCheck =
398 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
399
400 c->UniformBufferOffsetAlignment =
401 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
402
403 if (can_ubo) {
404 extensions->ARB_uniform_buffer_object = GL_TRUE;
405 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
406 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
407 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
408 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
409 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
410 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
411 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
412 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
413 }
414
415 c->GLSLFragCoordIsSysVal =
416 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
417 c->GLSLFrontFacingIsSysVal =
418 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
419
420 /* GL_ARB_get_program_binary */
421 if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
422 c->NumProgramBinaryFormats = 1;
423
424 c->MaxAtomicBufferBindings =
425 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
426
427 if (!ssbo_atomic) {
428 /* for separate atomic buffers - there atomic buffer size will be
429 limited */
430 c->MaxAtomicBufferSize = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
431 /* on all HW with separate atomic (evergreen) the following
432 lines are true. not sure it's worth adding CAPs for this at this
433 stage. */
434 c->MaxCombinedAtomicCounters = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
435 c->MaxCombinedAtomicBuffers = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
436 } else {
437 c->MaxCombinedAtomicBuffers =
438 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
439 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
440 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
441 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
442 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
443 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
444 }
445
446 if (c->MaxCombinedAtomicBuffers > 0) {
447 extensions->ARB_shader_atomic_counters = GL_TRUE;
448 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
449 }
450
451 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
452 c->ShaderStorageBufferOffsetAlignment =
453 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
454 if (c->ShaderStorageBufferOffsetAlignment) {
455 /* for hw atomic counters leaves these at default for now */
456 if (ssbo_atomic)
457 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
458 c->MaxCombinedAtomicBuffers;
459 c->MaxCombinedShaderOutputResources +=
460 c->MaxCombinedShaderStorageBlocks;
461 c->MaxShaderStorageBlockSize = 1 << 27;
462 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
463 }
464
465 c->MaxCombinedImageUniforms =
466 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
467 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
468 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
469 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
470 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
471 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
472 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
473 c->MaxImageUnits = MAX_IMAGE_UNITS;
474 if (c->MaxCombinedImageUniforms) {
475 extensions->ARB_shader_image_load_store = GL_TRUE;
476 extensions->ARB_shader_image_size = GL_TRUE;
477 }
478
479 /* ARB_framebuffer_no_attachments */
480 c->MaxFramebufferWidth = c->MaxViewportWidth;
481 c->MaxFramebufferHeight = c->MaxViewportHeight;
482 /* NOTE: we cheat here a little by assuming that
483 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
484 * number of layers as we need, although we technically
485 * could have more the generality is not really useful
486 * in practicality.
487 */
488 c->MaxFramebufferLayers =
489 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
490
491 c->MaxWindowRectangles =
492 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
493
494 c->SparseBufferPageSize =
495 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
496
497 c->AllowMappedBuffersDuringExecution =
498 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
499
500 c->UseSTD430AsDefaultPacking =
501 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
502
503 /* limit the max combined shader output resources to a driver limit */
504 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
505 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
506 c->MaxCombinedShaderOutputResources = temp;
507 }
508
509
510 /**
511 * Given a member \c x of struct gl_extensions, return offset of
512 * \c x in bytes.
513 */
514 #define o(x) offsetof(struct gl_extensions, x)
515
516
517 struct st_extension_cap_mapping {
518 int extension_offset;
519 int cap;
520 };
521
522 struct st_extension_format_mapping {
523 int extension_offset[2];
524 enum pipe_format format[32];
525
526 /* If TRUE, at least one format must be supported for the extensions to be
527 * advertised. If FALSE, all the formats must be supported. */
528 GLboolean need_at_least_one;
529 };
530
531 /**
532 * Enable extensions if certain pipe formats are supported by the driver.
533 * What extensions will be enabled and what formats must be supported is
534 * described by the array of st_extension_format_mapping.
535 *
536 * target and bind_flags are passed to is_format_supported.
537 */
538 static void
539 init_format_extensions(struct pipe_screen *screen,
540 struct gl_extensions *extensions,
541 const struct st_extension_format_mapping *mapping,
542 unsigned num_mappings,
543 enum pipe_texture_target target,
544 unsigned bind_flags)
545 {
546 GLboolean *extension_table = (GLboolean *) extensions;
547 unsigned i;
548 int j;
549 int num_formats = ARRAY_SIZE(mapping->format);
550 int num_ext = ARRAY_SIZE(mapping->extension_offset);
551
552 for (i = 0; i < num_mappings; i++) {
553 int num_supported = 0;
554
555 /* Examine each format in the list. */
556 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
557 if (screen->is_format_supported(screen, mapping[i].format[j],
558 target, 0, bind_flags)) {
559 num_supported++;
560 }
561 }
562
563 if (!num_supported ||
564 (!mapping[i].need_at_least_one && num_supported != j)) {
565 continue;
566 }
567
568 /* Enable all extensions in the list. */
569 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
570 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
571 }
572 }
573
574
575 /**
576 * Given a list of formats and bind flags, return the maximum number
577 * of samples supported by any of those formats.
578 */
579 static unsigned
580 get_max_samples_for_formats(struct pipe_screen *screen,
581 unsigned num_formats,
582 const enum pipe_format *formats,
583 unsigned max_samples,
584 unsigned bind)
585 {
586 unsigned i, f;
587
588 for (i = max_samples; i > 0; --i) {
589 for (f = 0; f < num_formats; f++) {
590 if (screen->is_format_supported(screen, formats[f],
591 PIPE_TEXTURE_2D, i, bind)) {
592 return i;
593 }
594 }
595 }
596 return 0;
597 }
598
599
600 /**
601 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
602 * which GL extensions are supported.
603 * Quite a few extensions are always supported because they are standard
604 * features or can be built on top of other gallium features.
605 * Some fine tuning may still be needed.
606 */
607 void st_init_extensions(struct pipe_screen *screen,
608 struct gl_constants *consts,
609 struct gl_extensions *extensions,
610 struct st_config_options *options,
611 gl_api api)
612 {
613 unsigned i;
614 GLboolean *extension_table = (GLboolean *) extensions;
615
616 static const struct st_extension_cap_mapping cap_mapping[] = {
617 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
618 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
619 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
620 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
621 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
622 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
623 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
624 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
625 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
626 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
627 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
628 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
629 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
630 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
631 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
632 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
633 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
634 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
635 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
636 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
637 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
638 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
639 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
640 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
641 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
642 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
643 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
644 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
645 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
646 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
647 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
648 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
649 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
650 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
651 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
652 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
653 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
654 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
655 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
656 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
657 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
658 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
659 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
660 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
661 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
662 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
663 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
664 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
665 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
666
667 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
668
669 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
670 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
671 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
672 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
673 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
674 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
675 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
676 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
677 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
678 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
679 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
680
681 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
682 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
683 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
684 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
685 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
686 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
687 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
688 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
689 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
690 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
691 /* GL_NV_point_sprite is not supported by gallium because we don't
692 * support the GL_POINT_SPRITE_R_MODE_NV option. */
693
694 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
695 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
696 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
697 };
698
699 /* Required: render target and sampler support */
700 static const struct st_extension_format_mapping rendertarget_mapping[] = {
701 { { o(ARB_texture_float) },
702 { PIPE_FORMAT_R32G32B32A32_FLOAT,
703 PIPE_FORMAT_R16G16B16A16_FLOAT } },
704
705 { { o(OES_texture_float) },
706 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
707
708 { { o(OES_texture_half_float) },
709 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
710
711 { { o(ARB_texture_rgb10_a2ui) },
712 { PIPE_FORMAT_R10G10B10A2_UINT,
713 PIPE_FORMAT_B10G10R10A2_UINT },
714 GL_TRUE }, /* at least one format must be supported */
715
716 { { o(EXT_framebuffer_sRGB) },
717 { PIPE_FORMAT_A8B8G8R8_SRGB,
718 PIPE_FORMAT_B8G8R8A8_SRGB },
719 GL_TRUE }, /* at least one format must be supported */
720
721 { { o(EXT_packed_float) },
722 { PIPE_FORMAT_R11G11B10_FLOAT } },
723
724 { { o(EXT_texture_integer) },
725 { PIPE_FORMAT_R32G32B32A32_UINT,
726 PIPE_FORMAT_R32G32B32A32_SINT } },
727
728 { { o(ARB_texture_rg) },
729 { PIPE_FORMAT_R8_UNORM,
730 PIPE_FORMAT_R8G8_UNORM } },
731 };
732
733 /* Required: depth stencil and sampler support */
734 static const struct st_extension_format_mapping depthstencil_mapping[] = {
735 { { o(ARB_depth_buffer_float) },
736 { PIPE_FORMAT_Z32_FLOAT,
737 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
738 };
739
740 /* Required: sampler support */
741 static const struct st_extension_format_mapping texture_mapping[] = {
742 { { o(ARB_texture_compression_rgtc) },
743 { PIPE_FORMAT_RGTC1_UNORM,
744 PIPE_FORMAT_RGTC1_SNORM,
745 PIPE_FORMAT_RGTC2_UNORM,
746 PIPE_FORMAT_RGTC2_SNORM } },
747
748 { { o(EXT_texture_compression_latc) },
749 { PIPE_FORMAT_LATC1_UNORM,
750 PIPE_FORMAT_LATC1_SNORM,
751 PIPE_FORMAT_LATC2_UNORM,
752 PIPE_FORMAT_LATC2_SNORM } },
753
754 { { o(EXT_texture_compression_s3tc),
755 o(ANGLE_texture_compression_dxt) },
756 { PIPE_FORMAT_DXT1_RGB,
757 PIPE_FORMAT_DXT1_RGBA,
758 PIPE_FORMAT_DXT3_RGBA,
759 PIPE_FORMAT_DXT5_RGBA } },
760
761 { { o(ARB_texture_compression_bptc) },
762 { PIPE_FORMAT_BPTC_RGBA_UNORM,
763 PIPE_FORMAT_BPTC_SRGBA,
764 PIPE_FORMAT_BPTC_RGB_FLOAT,
765 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
766
767 { { o(KHR_texture_compression_astc_ldr) },
768 { PIPE_FORMAT_ASTC_4x4,
769 PIPE_FORMAT_ASTC_5x4,
770 PIPE_FORMAT_ASTC_5x5,
771 PIPE_FORMAT_ASTC_6x5,
772 PIPE_FORMAT_ASTC_6x6,
773 PIPE_FORMAT_ASTC_8x5,
774 PIPE_FORMAT_ASTC_8x6,
775 PIPE_FORMAT_ASTC_8x8,
776 PIPE_FORMAT_ASTC_10x5,
777 PIPE_FORMAT_ASTC_10x6,
778 PIPE_FORMAT_ASTC_10x8,
779 PIPE_FORMAT_ASTC_10x10,
780 PIPE_FORMAT_ASTC_12x10,
781 PIPE_FORMAT_ASTC_12x12,
782 PIPE_FORMAT_ASTC_4x4_SRGB,
783 PIPE_FORMAT_ASTC_5x4_SRGB,
784 PIPE_FORMAT_ASTC_5x5_SRGB,
785 PIPE_FORMAT_ASTC_6x5_SRGB,
786 PIPE_FORMAT_ASTC_6x6_SRGB,
787 PIPE_FORMAT_ASTC_8x5_SRGB,
788 PIPE_FORMAT_ASTC_8x6_SRGB,
789 PIPE_FORMAT_ASTC_8x8_SRGB,
790 PIPE_FORMAT_ASTC_10x5_SRGB,
791 PIPE_FORMAT_ASTC_10x6_SRGB,
792 PIPE_FORMAT_ASTC_10x8_SRGB,
793 PIPE_FORMAT_ASTC_10x10_SRGB,
794 PIPE_FORMAT_ASTC_12x10_SRGB,
795 PIPE_FORMAT_ASTC_12x12_SRGB } },
796
797 { { o(EXT_texture_shared_exponent) },
798 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
799
800 { { o(EXT_texture_snorm) },
801 { PIPE_FORMAT_R8G8B8A8_SNORM } },
802
803 { { o(EXT_texture_sRGB),
804 o(EXT_texture_sRGB_decode) },
805 { PIPE_FORMAT_A8B8G8R8_SRGB,
806 PIPE_FORMAT_B8G8R8A8_SRGB },
807 GL_TRUE }, /* at least one format must be supported */
808
809 { { o(EXT_texture_type_2_10_10_10_REV) },
810 { PIPE_FORMAT_R10G10B10A2_UNORM,
811 PIPE_FORMAT_B10G10R10A2_UNORM },
812 GL_TRUE }, /* at least one format must be supported */
813
814 { { o(ATI_texture_compression_3dc) },
815 { PIPE_FORMAT_LATC2_UNORM } },
816
817 { { o(MESA_ycbcr_texture) },
818 { PIPE_FORMAT_UYVY,
819 PIPE_FORMAT_YUYV },
820 GL_TRUE }, /* at least one format must be supported */
821
822 { { o(OES_compressed_ETC1_RGB8_texture) },
823 { PIPE_FORMAT_ETC1_RGB8,
824 PIPE_FORMAT_R8G8B8A8_UNORM },
825 GL_TRUE }, /* at least one format must be supported */
826
827 { { o(ARB_stencil_texturing),
828 o(ARB_texture_stencil8) },
829 { PIPE_FORMAT_X24S8_UINT,
830 PIPE_FORMAT_S8X24_UINT },
831 GL_TRUE }, /* at least one format must be supported */
832 };
833
834 /* Required: vertex fetch support. */
835 static const struct st_extension_format_mapping vertex_mapping[] = {
836 { { o(EXT_vertex_array_bgra) },
837 { PIPE_FORMAT_B8G8R8A8_UNORM } },
838 { { o(ARB_vertex_type_2_10_10_10_rev) },
839 { PIPE_FORMAT_R10G10B10A2_UNORM,
840 PIPE_FORMAT_B10G10R10A2_UNORM,
841 PIPE_FORMAT_R10G10B10A2_SNORM,
842 PIPE_FORMAT_B10G10R10A2_SNORM,
843 PIPE_FORMAT_R10G10B10A2_USCALED,
844 PIPE_FORMAT_B10G10R10A2_USCALED,
845 PIPE_FORMAT_R10G10B10A2_SSCALED,
846 PIPE_FORMAT_B10G10R10A2_SSCALED } },
847 { { o(ARB_vertex_type_10f_11f_11f_rev) },
848 { PIPE_FORMAT_R11G11B10_FLOAT } },
849 };
850
851 static const struct st_extension_format_mapping tbo_rgb32[] = {
852 { {o(ARB_texture_buffer_object_rgb32) },
853 { PIPE_FORMAT_R32G32B32_FLOAT,
854 PIPE_FORMAT_R32G32B32_UINT,
855 PIPE_FORMAT_R32G32B32_SINT,
856 } },
857 };
858
859 /*
860 * Extensions that are supported by all Gallium drivers:
861 */
862 extensions->ARB_ES2_compatibility = GL_TRUE;
863 extensions->ARB_depth_texture = GL_TRUE;
864 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
865 extensions->ARB_explicit_attrib_location = GL_TRUE;
866 extensions->ARB_explicit_uniform_location = GL_TRUE;
867 extensions->ARB_fragment_coord_conventions = GL_TRUE;
868 extensions->ARB_fragment_program = GL_TRUE;
869 extensions->ARB_fragment_program_shadow = GL_TRUE;
870 extensions->ARB_fragment_shader = GL_TRUE;
871 extensions->ARB_half_float_vertex = GL_TRUE;
872 extensions->ARB_internalformat_query = GL_TRUE;
873 extensions->ARB_internalformat_query2 = GL_TRUE;
874 extensions->ARB_map_buffer_range = GL_TRUE;
875 extensions->ARB_shadow = GL_TRUE;
876 extensions->ARB_sync = GL_TRUE;
877 extensions->ARB_texture_border_clamp = GL_TRUE;
878 extensions->ARB_texture_cube_map = GL_TRUE;
879 extensions->ARB_texture_env_combine = GL_TRUE;
880 extensions->ARB_texture_env_crossbar = GL_TRUE;
881 extensions->ARB_texture_env_dot3 = GL_TRUE;
882 extensions->ARB_vertex_program = GL_TRUE;
883 extensions->ARB_vertex_shader = GL_TRUE;
884
885 extensions->EXT_blend_color = GL_TRUE;
886 extensions->EXT_blend_func_separate = GL_TRUE;
887 extensions->EXT_blend_minmax = GL_TRUE;
888 extensions->EXT_gpu_program_parameters = GL_TRUE;
889 extensions->EXT_pixel_buffer_object = GL_TRUE;
890 extensions->EXT_point_parameters = GL_TRUE;
891 extensions->EXT_provoking_vertex = GL_TRUE;
892 extensions->EXT_stencil_two_side = GL_TRUE;
893 extensions->EXT_texture_env_dot3 = GL_TRUE;
894
895 extensions->ATI_fragment_shader = GL_TRUE;
896 extensions->ATI_separate_stencil = GL_TRUE;
897 extensions->ATI_texture_env_combine3 = GL_TRUE;
898
899 extensions->MESA_pack_invert = GL_TRUE;
900
901 extensions->NV_fog_distance = GL_TRUE;
902 extensions->NV_texture_env_combine4 = GL_TRUE;
903 extensions->NV_texture_rectangle = GL_TRUE;
904
905 extensions->OES_EGL_image = GL_TRUE;
906 extensions->OES_EGL_image_external = GL_TRUE;
907 extensions->OES_draw_texture = GL_TRUE;
908
909 /* Expose the extensions which directly correspond to gallium caps. */
910 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
911 if (screen->get_param(screen, cap_mapping[i].cap)) {
912 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
913 }
914 }
915
916 /* Expose the extensions which directly correspond to gallium formats. */
917 init_format_extensions(screen, extensions, rendertarget_mapping,
918 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
919 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
920 init_format_extensions(screen, extensions, depthstencil_mapping,
921 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
922 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
923 init_format_extensions(screen, extensions, texture_mapping,
924 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
925 PIPE_BIND_SAMPLER_VIEW);
926 init_format_extensions(screen, extensions, vertex_mapping,
927 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
928 PIPE_BIND_VERTEX_BUFFER);
929
930 /* Figure out GLSL support and set GLSLVersion to it. */
931 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
932
933 _mesa_override_glsl_version(consts);
934
935 if (options->force_glsl_version > 0 &&
936 options->force_glsl_version <= consts->GLSLVersion) {
937 consts->ForceGLSLVersion = options->force_glsl_version;
938 }
939
940 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
941
942 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
943
944 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
945
946 consts->dri_config_options_sha1 = options->config_options_sha1;
947
948 consts->AllowGLSLCrossStageInterpolationMismatch = options->allow_glsl_cross_stage_interpolation_mismatch;
949
950 if (consts->GLSLVersion >= 400)
951 extensions->ARB_gpu_shader5 = GL_TRUE;
952 if (consts->GLSLVersion >= 410)
953 extensions->ARB_shader_precision = GL_TRUE;
954
955 /* This extension needs full OpenGL 3.2, but we don't know if that's
956 * supported at this point. Only check the GLSL version. */
957 if (consts->GLSLVersion >= 150 &&
958 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
959 extensions->AMD_vertex_shader_layer = GL_TRUE;
960 }
961
962 if (consts->GLSLVersion >= 140) {
963 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS))
964 extensions->ARB_enhanced_layouts = GL_TRUE;
965 }
966
967 if (consts->GLSLVersion >= 130) {
968 consts->NativeIntegers = GL_TRUE;
969 consts->MaxClipPlanes = 8;
970
971 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
972 consts->VertexID_is_zero_based = GL_TRUE;
973 }
974
975 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
976 extensions->ARB_conservative_depth = GL_TRUE;
977 extensions->ARB_shading_language_packing = GL_TRUE;
978 extensions->OES_depth_texture_cube_map = GL_TRUE;
979 extensions->ARB_shading_language_420pack = GL_TRUE;
980 extensions->ARB_texture_query_levels = GL_TRUE;
981
982 if (!options->disable_shader_bit_encoding) {
983 extensions->ARB_shader_bit_encoding = GL_TRUE;
984 }
985
986 extensions->EXT_shader_integer_mix = GL_TRUE;
987 extensions->ARB_arrays_of_arrays = GL_TRUE;
988 extensions->MESA_shader_integer_functions = GL_TRUE;
989 } else {
990 /* Optional integer support for GLSL 1.2. */
991 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
992 PIPE_SHADER_CAP_INTEGERS) &&
993 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
994 PIPE_SHADER_CAP_INTEGERS)) {
995 consts->NativeIntegers = GL_TRUE;
996
997 extensions->EXT_shader_integer_mix = GL_TRUE;
998 }
999
1000 /* Integer textures make no sense before GLSL 1.30 */
1001 extensions->EXT_texture_integer = GL_FALSE;
1002 }
1003
1004 consts->GLSLZeroInit = options->glsl_zero_init;
1005
1006 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
1007
1008 /* Below are the cases which cannot be moved into tables easily. */
1009
1010 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
1011 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1012 extensions->ARB_tessellation_shader = GL_TRUE;
1013 }
1014
1015 /* What this is really checking for is the ability to support multiple
1016 * invocations of a geometry shader. There is no separate cap for that, so
1017 * we check the GLSLVersion.
1018 */
1019 if (consts->GLSLVersion >= 400 &&
1020 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
1021 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
1022 extensions->OES_geometry_shader = GL_TRUE;
1023 }
1024
1025 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1026 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1027 */
1028 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1029 extensions->ARB_gpu_shader5;
1030
1031 /* Maximum sample count. */
1032 {
1033 static const enum pipe_format color_formats[] = {
1034 PIPE_FORMAT_R8G8B8A8_UNORM,
1035 PIPE_FORMAT_B8G8R8A8_UNORM,
1036 PIPE_FORMAT_A8R8G8B8_UNORM,
1037 PIPE_FORMAT_A8B8G8R8_UNORM,
1038 };
1039 static const enum pipe_format depth_formats[] = {
1040 PIPE_FORMAT_Z16_UNORM,
1041 PIPE_FORMAT_Z24X8_UNORM,
1042 PIPE_FORMAT_X8Z24_UNORM,
1043 PIPE_FORMAT_Z32_UNORM,
1044 PIPE_FORMAT_Z32_FLOAT
1045 };
1046 static const enum pipe_format int_formats[] = {
1047 PIPE_FORMAT_R8G8B8A8_SINT
1048 };
1049 static const enum pipe_format void_formats[] = {
1050 PIPE_FORMAT_NONE
1051 };
1052
1053 consts->MaxSamples =
1054 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1055 color_formats, 16,
1056 PIPE_BIND_RENDER_TARGET);
1057
1058 consts->MaxImageSamples =
1059 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1060 color_formats, 16,
1061 PIPE_BIND_SHADER_IMAGE);
1062
1063 consts->MaxColorTextureSamples =
1064 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1065 color_formats, consts->MaxSamples,
1066 PIPE_BIND_SAMPLER_VIEW);
1067
1068 consts->MaxDepthTextureSamples =
1069 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1070 depth_formats, consts->MaxSamples,
1071 PIPE_BIND_SAMPLER_VIEW);
1072
1073 consts->MaxIntegerSamples =
1074 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1075 int_formats, consts->MaxSamples,
1076 PIPE_BIND_SAMPLER_VIEW);
1077
1078 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1079 consts->MaxFramebufferSamples =
1080 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1081 void_formats, 32,
1082 PIPE_BIND_RENDER_TARGET);
1083 }
1084
1085 if (consts->MaxSamples >= 2) {
1086 /* Real MSAA support */
1087 extensions->EXT_framebuffer_multisample = GL_TRUE;
1088 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1089 }
1090 else if (consts->MaxSamples > 0 &&
1091 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1092 /* fake MSAA support */
1093 consts->FakeSWMSAA = GL_TRUE;
1094 extensions->EXT_framebuffer_multisample = GL_TRUE;
1095 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1096 extensions->ARB_texture_multisample = GL_TRUE;
1097 }
1098
1099 if (consts->MaxDualSourceDrawBuffers > 0 &&
1100 !options->disable_blend_func_extended)
1101 extensions->ARB_blend_func_extended = GL_TRUE;
1102
1103 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1104 extensions->ARB_timer_query) {
1105 extensions->EXT_timer_query = GL_TRUE;
1106 }
1107
1108 if (extensions->ARB_transform_feedback2 &&
1109 extensions->ARB_draw_instanced) {
1110 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1111 }
1112 if (options->force_glsl_extensions_warn)
1113 consts->ForceGLSLExtensionsWarn = 1;
1114
1115 if (options->disable_glsl_line_continuations)
1116 consts->DisableGLSLLineContinuations = 1;
1117
1118 if (options->allow_glsl_extension_directive_midshader)
1119 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1120
1121 consts->MinMapBufferAlignment =
1122 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1123
1124 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1125 if (api == API_OPENGL_COMPAT &&
1126 screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY))
1127 extensions->ARB_texture_buffer_object = GL_FALSE;
1128
1129 if (extensions->ARB_texture_buffer_object) {
1130 consts->MaxTextureBufferSize =
1131 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1132 (1u << 31) - 1);
1133 consts->TextureBufferOffsetAlignment =
1134 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1135
1136 if (consts->TextureBufferOffsetAlignment)
1137 extensions->ARB_texture_buffer_range = GL_TRUE;
1138
1139 init_format_extensions(screen, extensions, tbo_rgb32,
1140 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1141 PIPE_BIND_SAMPLER_VIEW);
1142 }
1143
1144 extensions->OES_texture_buffer =
1145 extensions->ARB_texture_buffer_object &&
1146 extensions->ARB_texture_buffer_range &&
1147 extensions->ARB_texture_buffer_object_rgb32 &&
1148 extensions->ARB_shader_image_load_store;
1149
1150 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1151 * If the number of available texture indirections is very limited, then we
1152 * prefer to disable varying packing rather than run the risk of varying
1153 * packing preventing a shader from running.
1154 */
1155 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1156 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1157 /* We can't disable varying packing if transform feedback is available,
1158 * because transform feedback code assumes a packed varying layout.
1159 */
1160 if (!extensions->EXT_transform_feedback)
1161 consts->DisableVaryingPacking = GL_TRUE;
1162 }
1163
1164 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1165 if (consts->MaxViewports >= 16) {
1166 if (consts->GLSLVersion >= 400) {
1167 consts->ViewportBounds.Min = -32768.0;
1168 consts->ViewportBounds.Max = 32767.0;
1169 } else {
1170 consts->ViewportBounds.Min = -16384.0;
1171 consts->ViewportBounds.Max = 16383.0;
1172 }
1173 extensions->ARB_viewport_array = GL_TRUE;
1174 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1175 if (extensions->AMD_vertex_shader_layer)
1176 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1177 }
1178
1179 if (extensions->AMD_vertex_shader_layer &&
1180 extensions->AMD_vertex_shader_viewport_index &&
1181 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1182 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1183
1184 /* ARB_framebuffer_no_attachments */
1185 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1186 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1187 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1188 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1189 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1190
1191 /* GL_ARB_ES3_compatibility.
1192 *
1193 * Assume that ES3 is supported if GLSL 3.30 is supported.
1194 * (OpenGL 3.3 is a requirement for that extension.)
1195 */
1196 if (consts->GLSLVersion >= 330 &&
1197 /* Requirements for ETC2 emulation. */
1198 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1199 PIPE_TEXTURE_2D, 0,
1200 PIPE_BIND_SAMPLER_VIEW) &&
1201 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1202 PIPE_TEXTURE_2D, 0,
1203 PIPE_BIND_SAMPLER_VIEW) &&
1204 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1205 PIPE_TEXTURE_2D, 0,
1206 PIPE_BIND_SAMPLER_VIEW) &&
1207 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1208 PIPE_TEXTURE_2D, 0,
1209 PIPE_BIND_SAMPLER_VIEW) &&
1210 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1211 PIPE_TEXTURE_2D, 0,
1212 PIPE_BIND_SAMPLER_VIEW) &&
1213 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1214 PIPE_TEXTURE_2D, 0,
1215 PIPE_BIND_SAMPLER_VIEW)) {
1216 extensions->ARB_ES3_compatibility = GL_TRUE;
1217 }
1218
1219 #ifdef HAVE_ST_VDPAU
1220 if (screen->get_video_param &&
1221 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1222 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1223 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1224 extensions->NV_vdpau_interop = GL_TRUE;
1225 }
1226 #endif
1227
1228 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1229 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1230 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1231 }
1232
1233 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1234 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1235 extensions->GREMEDY_string_marker = GL_TRUE;
1236
1237 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1238 int compute_supported_irs =
1239 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1240 PIPE_SHADER_CAP_SUPPORTED_IRS);
1241 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1242 uint64_t grid_size[3], block_size[3];
1243 uint64_t max_local_size, max_threads_per_block;
1244
1245 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1246 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1247 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1248 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1249 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1250 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1251 &max_threads_per_block);
1252 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1253 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1254 &max_local_size);
1255
1256 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1257 consts->MaxComputeSharedMemorySize = max_local_size;
1258
1259 for (i = 0; i < 3; i++) {
1260 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1261 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1262 }
1263
1264 extensions->ARB_compute_shader =
1265 extensions->ARB_shader_image_load_store &&
1266 extensions->ARB_shader_atomic_counters;
1267
1268 if (extensions->ARB_compute_shader) {
1269 uint64_t max_variable_threads_per_block = 0;
1270
1271 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1272 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1273 &max_variable_threads_per_block);
1274
1275 for (i = 0; i < 3; i++) {
1276 /* Clamp the values to avoid having a local work group size
1277 * greater than the maximum number of invocations.
1278 */
1279 consts->MaxComputeVariableGroupSize[i] =
1280 MIN2(consts->MaxComputeWorkGroupSize[i],
1281 max_variable_threads_per_block);
1282 }
1283 consts->MaxComputeVariableGroupInvocations =
1284 max_variable_threads_per_block;
1285
1286 extensions->ARB_compute_variable_group_size =
1287 max_variable_threads_per_block > 0;
1288 }
1289 }
1290 }
1291
1292 if (extensions->EXT_texture_filter_anisotropic &&
1293 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1294 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1295
1296 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1297
1298 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1299 * there's no clean way of telling whether we would support ES 3.1 from
1300 * here, so copy the condition from compute_version_es2 here. A lot of
1301 * these are redunant, but simpler to just have a (near-)exact copy here.
1302 */
1303 extensions->ARB_ES3_1_compatibility =
1304 extensions->ARB_ES3_compatibility &&
1305 extensions->ARB_arrays_of_arrays &&
1306 extensions->ARB_compute_shader &&
1307 extensions->ARB_draw_indirect &&
1308 extensions->ARB_explicit_uniform_location &&
1309 extensions->ARB_framebuffer_no_attachments &&
1310 extensions->ARB_shader_atomic_counters &&
1311 extensions->ARB_shader_image_load_store &&
1312 extensions->ARB_shader_image_size &&
1313 extensions->ARB_shader_storage_buffer_object &&
1314 extensions->ARB_shading_language_packing &&
1315 extensions->ARB_stencil_texturing &&
1316 extensions->ARB_texture_multisample &&
1317 extensions->ARB_gpu_shader5 &&
1318 extensions->EXT_shader_integer_mix;
1319
1320 extensions->OES_texture_cube_map_array =
1321 extensions->ARB_ES3_1_compatibility &&
1322 extensions->OES_geometry_shader &&
1323 extensions->ARB_texture_cube_map_array;
1324
1325 extensions->OES_viewport_array =
1326 extensions->ARB_ES3_1_compatibility &&
1327 extensions->OES_geometry_shader &&
1328 extensions->ARB_viewport_array;
1329
1330 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1331 consts->NoPrimitiveBoundingBoxOutput = true;
1332
1333 extensions->ANDROID_extension_pack_es31a =
1334 extensions->KHR_texture_compression_astc_ldr &&
1335 extensions->KHR_blend_equation_advanced &&
1336 extensions->OES_sample_variables &&
1337 extensions->ARB_shader_image_load_store &&
1338 extensions->ARB_texture_stencil8 &&
1339 extensions->ARB_texture_multisample &&
1340 extensions->OES_copy_image &&
1341 extensions->ARB_draw_buffers_blend &&
1342 extensions->OES_geometry_shader &&
1343 extensions->ARB_gpu_shader5 &&
1344 extensions->OES_primitive_bounding_box &&
1345 extensions->ARB_tessellation_shader &&
1346 extensions->ARB_texture_border_clamp &&
1347 extensions->OES_texture_buffer &&
1348 extensions->OES_texture_cube_map_array &&
1349 extensions->EXT_texture_sRGB_decode;
1350
1351 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1352 * before overall versions are selected. Also it's actually a subset of ES
1353 * 3.2, since it doesn't require ASTC or advanced blending.
1354 */
1355 extensions->ARB_ES3_2_compatibility =
1356 extensions->ARB_ES3_1_compatibility &&
1357 extensions->KHR_robustness &&
1358 extensions->ARB_copy_image &&
1359 extensions->ARB_draw_buffers_blend &&
1360 extensions->ARB_draw_elements_base_vertex &&
1361 extensions->OES_geometry_shader &&
1362 extensions->ARB_gpu_shader5 &&
1363 extensions->ARB_sample_shading &&
1364 extensions->ARB_tessellation_shader &&
1365 extensions->ARB_texture_border_clamp &&
1366 extensions->OES_texture_buffer &&
1367 extensions->ARB_texture_cube_map_array &&
1368 extensions->ARB_texture_stencil8 &&
1369 extensions->ARB_texture_multisample;
1370 }