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mesa/st: implement max combined output resources limiting.
[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
83 c->MaxTextureLevels
84 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
85 MAX_TEXTURE_LEVELS);
86
87 c->Max3DTextureLevels
88 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
89 MAX_3D_TEXTURE_LEVELS);
90
91 c->MaxCubeTextureLevels
92 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
93 MAX_CUBE_TEXTURE_LEVELS);
94
95 c->MaxTextureRectSize
96 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
97
98 c->MaxArrayTextureLayers
99 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
100
101 /* Define max viewport size and max renderbuffer size in terms of
102 * max texture size (note: max tex RECT size = max tex 2D size).
103 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
104 */
105 c->MaxViewportWidth =
106 c->MaxViewportHeight =
107 c->MaxRenderbufferSize = c->MaxTextureRectSize;
108
109 c->ViewportSubpixelBits =
110 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
111
112 c->MaxDrawBuffers = c->MaxColorAttachments =
113 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
114 1, MAX_DRAW_BUFFERS);
115
116 c->MaxDualSourceDrawBuffers =
117 _clamp(screen->get_param(screen,
118 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
119 0, MAX_DRAW_BUFFERS);
120
121 c->MaxLineWidth =
122 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
123 c->MaxLineWidthAA =
124 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
125
126 c->MaxPointSize =
127 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
128 c->MaxPointSizeAA =
129 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
130
131 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
132 * for non-aa sizes, but we can go down to 0.0 for aa points.
133 */
134 c->MinPointSize = 1.0f;
135 c->MinPointSizeAA = 0.0f;
136
137 c->MaxTextureMaxAnisotropy =
138 _maxf(2.0f,
139 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
140
141 c->MaxTextureLodBias =
142 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
143
144 c->QuadsFollowProvokingVertexConvention =
145 screen->get_param(screen,
146 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
147
148 c->MaxUniformBlockSize =
149 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
150 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
151 if (c->MaxUniformBlockSize < 16384) {
152 can_ubo = FALSE;
153 }
154
155 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
156 struct gl_shader_compiler_options *options;
157 struct gl_program_constants *pc;
158
159 switch (sh) {
160 case PIPE_SHADER_FRAGMENT:
161 pc = &c->Program[MESA_SHADER_FRAGMENT];
162 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
163 break;
164 case PIPE_SHADER_VERTEX:
165 pc = &c->Program[MESA_SHADER_VERTEX];
166 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
167 break;
168 case PIPE_SHADER_GEOMETRY:
169 pc = &c->Program[MESA_SHADER_GEOMETRY];
170 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
171 break;
172 case PIPE_SHADER_TESS_CTRL:
173 pc = &c->Program[MESA_SHADER_TESS_CTRL];
174 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
175 break;
176 case PIPE_SHADER_TESS_EVAL:
177 pc = &c->Program[MESA_SHADER_TESS_EVAL];
178 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
179 break;
180 case PIPE_SHADER_COMPUTE:
181 pc = &c->Program[MESA_SHADER_COMPUTE];
182 options = &c->ShaderCompilerOptions[MESA_SHADER_COMPUTE];
183
184 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
185 continue;
186 supported_irs =
187 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
188 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
189 continue;
190 break;
191 default:
192 assert(0);
193 }
194
195 pc->MaxTextureImageUnits =
196 _min(screen->get_shader_param(screen, sh,
197 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
198 MAX_TEXTURE_IMAGE_UNITS);
199
200 pc->MaxInstructions =
201 pc->MaxNativeInstructions =
202 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
203 pc->MaxAluInstructions =
204 pc->MaxNativeAluInstructions =
205 screen->get_shader_param(screen, sh,
206 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
207 pc->MaxTexInstructions =
208 pc->MaxNativeTexInstructions =
209 screen->get_shader_param(screen, sh,
210 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
211 pc->MaxTexIndirections =
212 pc->MaxNativeTexIndirections =
213 screen->get_shader_param(screen, sh,
214 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
215 pc->MaxAttribs =
216 pc->MaxNativeAttribs =
217 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
218 pc->MaxTemps =
219 pc->MaxNativeTemps =
220 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
221 pc->MaxAddressRegs =
222 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
223 pc->MaxParameters =
224 pc->MaxNativeParameters =
225 screen->get_shader_param(screen, sh,
226 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
227 pc->MaxInputComponents =
228 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
229 pc->MaxOutputComponents =
230 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
231
232 pc->MaxUniformComponents =
233 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
234
235 pc->MaxUniformBlocks =
236 screen->get_shader_param(screen, sh,
237 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
238 if (pc->MaxUniformBlocks)
239 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
240 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
241
242 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
243 c->MaxUniformBlockSize / 4 *
244 pc->MaxUniformBlocks);
245
246 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
247 pc->MaxAtomicBuffers = screen->get_shader_param(
248 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
249 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
250
251 pc->MaxImageUniforms = screen->get_shader_param(
252 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
253
254 /* Gallium doesn't really care about local vs. env parameters so use the
255 * same limits.
256 */
257 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
258 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
259
260 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
261 pc->LowInt.RangeMin = 31;
262 pc->LowInt.RangeMax = 30;
263 pc->LowInt.Precision = 0;
264 pc->MediumInt = pc->HighInt = pc->LowInt;
265 }
266
267 /* TODO: make these more fine-grained if anyone needs it */
268 options->MaxIfDepth =
269 screen->get_shader_param(screen, sh,
270 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
271 options->EmitNoLoops =
272 !screen->get_shader_param(screen, sh,
273 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
274 options->EmitNoMainReturn =
275 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
276
277 options->EmitNoCont =
278 !screen->get_shader_param(screen, sh,
279 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
280
281 options->EmitNoIndirectInput =
282 !screen->get_shader_param(screen, sh,
283 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
284 options->EmitNoIndirectOutput =
285 !screen->get_shader_param(screen, sh,
286 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
287 options->EmitNoIndirectTemp =
288 !screen->get_shader_param(screen, sh,
289 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
290 options->EmitNoIndirectUniform =
291 !screen->get_shader_param(screen, sh,
292 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
293
294 if (pc->MaxNativeInstructions &&
295 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
296 can_ubo = FALSE;
297 }
298
299 if (options->EmitNoLoops)
300 options->MaxUnrollIterations =
301 MIN2(screen->get_shader_param(screen, sh,
302 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
303 65536);
304 else
305 options->MaxUnrollIterations =
306 screen->get_shader_param(screen, sh,
307 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
308
309 options->LowerCombinedClipCullDistance = true;
310 options->LowerBufferInterfaceBlocks = true;
311 }
312
313 c->GLSLOptimizeConservatively =
314 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
315 c->LowerTessLevel = true;
316 c->LowerCsDerivedVariables = true;
317 c->PrimitiveRestartForPatches =
318 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
319
320 c->MaxCombinedTextureImageUnits =
321 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
322 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
323 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
324 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
325 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
326 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
327 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
328
329 /* This depends on program constants. */
330 c->MaxTextureCoordUnits
331 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
332 MAX_TEXTURE_COORD_UNITS);
333
334 c->MaxTextureUnits =
335 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
336 c->MaxTextureCoordUnits);
337
338 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
339 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
340
341 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
342 * of inputs. It's always 2 colors + N generic inputs. */
343 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
344 PIPE_SHADER_CAP_MAX_INPUTS);
345 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
346 c->MaxGeometryOutputVertices =
347 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
348 c->MaxGeometryTotalOutputComponents =
349 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
350 c->MaxTessPatchComponents =
351 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
352 MAX_VARYING) * 4;
353
354 c->MinProgramTexelOffset =
355 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
356 c->MaxProgramTexelOffset =
357 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
358
359 c->MaxProgramTextureGatherComponents =
360 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
361 c->MinProgramTextureGatherOffset =
362 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
363 c->MaxProgramTextureGatherOffset =
364 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
365
366 c->MaxTransformFeedbackBuffers =
367 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
368 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
369 MAX_FEEDBACK_BUFFERS);
370 c->MaxTransformFeedbackSeparateComponents =
371 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
372 c->MaxTransformFeedbackInterleavedComponents =
373 screen->get_param(screen,
374 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
375 c->MaxVertexStreams =
376 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
377
378 /* The vertex stream must fit into pipe_stream_output_info::stream */
379 assert(c->MaxVertexStreams <= 4);
380
381 c->MaxVertexAttribStride
382 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
383
384 c->StripTextureBorder = GL_TRUE;
385
386 c->GLSLSkipStrictMaxUniformLimitCheck =
387 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
388
389 c->UniformBufferOffsetAlignment =
390 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
391
392 if (can_ubo) {
393 extensions->ARB_uniform_buffer_object = GL_TRUE;
394 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
395 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
396 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
397 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
398 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
399 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
400 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
401 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
402 }
403
404 c->GLSLFragCoordIsSysVal =
405 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
406 c->GLSLFrontFacingIsSysVal =
407 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
408
409 c->MaxAtomicBufferBindings =
410 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
411 c->MaxCombinedAtomicBuffers =
412 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
413 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
414 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
415 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
416 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
417 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
418
419 if (c->MaxCombinedAtomicBuffers > 0) {
420 extensions->ARB_shader_atomic_counters = GL_TRUE;
421 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
422 }
423
424 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
425 c->ShaderStorageBufferOffsetAlignment =
426 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
427 if (c->ShaderStorageBufferOffsetAlignment) {
428 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
429 c->MaxCombinedAtomicBuffers;
430 c->MaxCombinedShaderOutputResources +=
431 c->MaxCombinedShaderStorageBlocks;
432 c->MaxShaderStorageBlockSize = 1 << 27;
433 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
434 }
435
436 c->MaxCombinedImageUniforms =
437 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
438 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
439 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
440 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
441 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
442 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
443 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
444 c->MaxImageUnits = MAX_IMAGE_UNITS;
445 if (c->MaxCombinedImageUniforms) {
446 extensions->ARB_shader_image_load_store = GL_TRUE;
447 extensions->ARB_shader_image_size = GL_TRUE;
448 }
449
450 /* ARB_framebuffer_no_attachments */
451 c->MaxFramebufferWidth = c->MaxViewportWidth;
452 c->MaxFramebufferHeight = c->MaxViewportHeight;
453 /* NOTE: we cheat here a little by assuming that
454 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
455 * number of layers as we need, although we technically
456 * could have more the generality is not really useful
457 * in practicality.
458 */
459 c->MaxFramebufferLayers =
460 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
461
462 c->MaxWindowRectangles =
463 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
464
465 c->SparseBufferPageSize =
466 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
467
468 c->AllowMappedBuffersDuringExecution =
469 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
470
471 c->UseSTD430AsDefaultPacking =
472 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
473
474 /* limit the max combined shader output resources to a driver limit */
475 temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
476 if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
477 c->MaxCombinedShaderOutputResources = temp;
478 }
479
480
481 /**
482 * Given a member \c x of struct gl_extensions, return offset of
483 * \c x in bytes.
484 */
485 #define o(x) offsetof(struct gl_extensions, x)
486
487
488 struct st_extension_cap_mapping {
489 int extension_offset;
490 int cap;
491 };
492
493 struct st_extension_format_mapping {
494 int extension_offset[2];
495 enum pipe_format format[32];
496
497 /* If TRUE, at least one format must be supported for the extensions to be
498 * advertised. If FALSE, all the formats must be supported. */
499 GLboolean need_at_least_one;
500 };
501
502 /**
503 * Enable extensions if certain pipe formats are supported by the driver.
504 * What extensions will be enabled and what formats must be supported is
505 * described by the array of st_extension_format_mapping.
506 *
507 * target and bind_flags are passed to is_format_supported.
508 */
509 static void
510 init_format_extensions(struct pipe_screen *screen,
511 struct gl_extensions *extensions,
512 const struct st_extension_format_mapping *mapping,
513 unsigned num_mappings,
514 enum pipe_texture_target target,
515 unsigned bind_flags)
516 {
517 GLboolean *extension_table = (GLboolean *) extensions;
518 unsigned i;
519 int j;
520 int num_formats = ARRAY_SIZE(mapping->format);
521 int num_ext = ARRAY_SIZE(mapping->extension_offset);
522
523 for (i = 0; i < num_mappings; i++) {
524 int num_supported = 0;
525
526 /* Examine each format in the list. */
527 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
528 if (screen->is_format_supported(screen, mapping[i].format[j],
529 target, 0, bind_flags)) {
530 num_supported++;
531 }
532 }
533
534 if (!num_supported ||
535 (!mapping[i].need_at_least_one && num_supported != j)) {
536 continue;
537 }
538
539 /* Enable all extensions in the list. */
540 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
541 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
542 }
543 }
544
545
546 /**
547 * Given a list of formats and bind flags, return the maximum number
548 * of samples supported by any of those formats.
549 */
550 static unsigned
551 get_max_samples_for_formats(struct pipe_screen *screen,
552 unsigned num_formats,
553 const enum pipe_format *formats,
554 unsigned max_samples,
555 unsigned bind)
556 {
557 unsigned i, f;
558
559 for (i = max_samples; i > 0; --i) {
560 for (f = 0; f < num_formats; f++) {
561 if (screen->is_format_supported(screen, formats[f],
562 PIPE_TEXTURE_2D, i, bind)) {
563 return i;
564 }
565 }
566 }
567 return 0;
568 }
569
570
571 /**
572 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
573 * which GL extensions are supported.
574 * Quite a few extensions are always supported because they are standard
575 * features or can be built on top of other gallium features.
576 * Some fine tuning may still be needed.
577 */
578 void st_init_extensions(struct pipe_screen *screen,
579 struct gl_constants *consts,
580 struct gl_extensions *extensions,
581 struct st_config_options *options)
582 {
583 unsigned i;
584 GLboolean *extension_table = (GLboolean *) extensions;
585
586 static const struct st_extension_cap_mapping cap_mapping[] = {
587 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
588 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
589 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
590 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
591 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
592 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
593 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
594 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
595 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
596 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
597 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
598 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
599 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
600 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
601 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
602 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
603 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
604 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
605 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
606 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
607 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
608 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
609 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
610 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
611 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
612 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
613 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
614 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
615 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
616 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
617 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
618 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
619 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
620 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
621 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
622 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
623 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
624 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
625 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
626 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
627 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
628 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
629 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
630 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
631 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
632 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
633 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
634 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
635 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
636 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
637 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
638 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
639
640 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
641
642 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
643 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
644 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
645 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
646 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
647 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
648 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
649 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
650 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
651 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
652 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
653 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
654
655 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
656 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
657 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
658 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
659 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
660 { o(MESA_tile_raster_order), PIPE_CAP_TILE_RASTER_ORDER },
661 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
662 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
663 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
664 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
665 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
666 /* GL_NV_point_sprite is not supported by gallium because we don't
667 * support the GL_POINT_SPRITE_R_MODE_NV option. */
668
669 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
670 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
671 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
672 };
673
674 /* Required: render target and sampler support */
675 static const struct st_extension_format_mapping rendertarget_mapping[] = {
676 { { o(ARB_texture_float) },
677 { PIPE_FORMAT_R32G32B32A32_FLOAT,
678 PIPE_FORMAT_R16G16B16A16_FLOAT } },
679
680 { { o(OES_texture_float) },
681 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
682
683 { { o(OES_texture_half_float) },
684 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
685
686 { { o(ARB_texture_rgb10_a2ui) },
687 { PIPE_FORMAT_R10G10B10A2_UINT,
688 PIPE_FORMAT_B10G10R10A2_UINT },
689 GL_TRUE }, /* at least one format must be supported */
690
691 { { o(EXT_framebuffer_sRGB) },
692 { PIPE_FORMAT_A8B8G8R8_SRGB,
693 PIPE_FORMAT_B8G8R8A8_SRGB },
694 GL_TRUE }, /* at least one format must be supported */
695
696 { { o(EXT_packed_float) },
697 { PIPE_FORMAT_R11G11B10_FLOAT } },
698
699 { { o(EXT_texture_integer) },
700 { PIPE_FORMAT_R32G32B32A32_UINT,
701 PIPE_FORMAT_R32G32B32A32_SINT } },
702
703 { { o(ARB_texture_rg) },
704 { PIPE_FORMAT_R8_UNORM,
705 PIPE_FORMAT_R8G8_UNORM } },
706 };
707
708 /* Required: depth stencil and sampler support */
709 static const struct st_extension_format_mapping depthstencil_mapping[] = {
710 { { o(ARB_depth_buffer_float) },
711 { PIPE_FORMAT_Z32_FLOAT,
712 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
713 };
714
715 /* Required: sampler support */
716 static const struct st_extension_format_mapping texture_mapping[] = {
717 { { o(ARB_texture_compression_rgtc) },
718 { PIPE_FORMAT_RGTC1_UNORM,
719 PIPE_FORMAT_RGTC1_SNORM,
720 PIPE_FORMAT_RGTC2_UNORM,
721 PIPE_FORMAT_RGTC2_SNORM } },
722
723 { { o(EXT_texture_compression_latc) },
724 { PIPE_FORMAT_LATC1_UNORM,
725 PIPE_FORMAT_LATC1_SNORM,
726 PIPE_FORMAT_LATC2_UNORM,
727 PIPE_FORMAT_LATC2_SNORM } },
728
729 { { o(EXT_texture_compression_s3tc),
730 o(ANGLE_texture_compression_dxt) },
731 { PIPE_FORMAT_DXT1_RGB,
732 PIPE_FORMAT_DXT1_RGBA,
733 PIPE_FORMAT_DXT3_RGBA,
734 PIPE_FORMAT_DXT5_RGBA } },
735
736 { { o(ARB_texture_compression_bptc) },
737 { PIPE_FORMAT_BPTC_RGBA_UNORM,
738 PIPE_FORMAT_BPTC_SRGBA,
739 PIPE_FORMAT_BPTC_RGB_FLOAT,
740 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
741
742 { { o(KHR_texture_compression_astc_ldr) },
743 { PIPE_FORMAT_ASTC_4x4,
744 PIPE_FORMAT_ASTC_5x4,
745 PIPE_FORMAT_ASTC_5x5,
746 PIPE_FORMAT_ASTC_6x5,
747 PIPE_FORMAT_ASTC_6x6,
748 PIPE_FORMAT_ASTC_8x5,
749 PIPE_FORMAT_ASTC_8x6,
750 PIPE_FORMAT_ASTC_8x8,
751 PIPE_FORMAT_ASTC_10x5,
752 PIPE_FORMAT_ASTC_10x6,
753 PIPE_FORMAT_ASTC_10x8,
754 PIPE_FORMAT_ASTC_10x10,
755 PIPE_FORMAT_ASTC_12x10,
756 PIPE_FORMAT_ASTC_12x12,
757 PIPE_FORMAT_ASTC_4x4_SRGB,
758 PIPE_FORMAT_ASTC_5x4_SRGB,
759 PIPE_FORMAT_ASTC_5x5_SRGB,
760 PIPE_FORMAT_ASTC_6x5_SRGB,
761 PIPE_FORMAT_ASTC_6x6_SRGB,
762 PIPE_FORMAT_ASTC_8x5_SRGB,
763 PIPE_FORMAT_ASTC_8x6_SRGB,
764 PIPE_FORMAT_ASTC_8x8_SRGB,
765 PIPE_FORMAT_ASTC_10x5_SRGB,
766 PIPE_FORMAT_ASTC_10x6_SRGB,
767 PIPE_FORMAT_ASTC_10x8_SRGB,
768 PIPE_FORMAT_ASTC_10x10_SRGB,
769 PIPE_FORMAT_ASTC_12x10_SRGB,
770 PIPE_FORMAT_ASTC_12x12_SRGB } },
771
772 { { o(EXT_texture_shared_exponent) },
773 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
774
775 { { o(EXT_texture_snorm) },
776 { PIPE_FORMAT_R8G8B8A8_SNORM } },
777
778 { { o(EXT_texture_sRGB),
779 o(EXT_texture_sRGB_decode) },
780 { PIPE_FORMAT_A8B8G8R8_SRGB,
781 PIPE_FORMAT_B8G8R8A8_SRGB },
782 GL_TRUE }, /* at least one format must be supported */
783
784 { { o(EXT_texture_type_2_10_10_10_REV) },
785 { PIPE_FORMAT_R10G10B10A2_UNORM,
786 PIPE_FORMAT_B10G10R10A2_UNORM },
787 GL_TRUE }, /* at least one format must be supported */
788
789 { { o(ATI_texture_compression_3dc) },
790 { PIPE_FORMAT_LATC2_UNORM } },
791
792 { { o(MESA_ycbcr_texture) },
793 { PIPE_FORMAT_UYVY,
794 PIPE_FORMAT_YUYV },
795 GL_TRUE }, /* at least one format must be supported */
796
797 { { o(OES_compressed_ETC1_RGB8_texture) },
798 { PIPE_FORMAT_ETC1_RGB8,
799 PIPE_FORMAT_R8G8B8A8_UNORM },
800 GL_TRUE }, /* at least one format must be supported */
801
802 { { o(ARB_stencil_texturing),
803 o(ARB_texture_stencil8) },
804 { PIPE_FORMAT_X24S8_UINT,
805 PIPE_FORMAT_S8X24_UINT },
806 GL_TRUE }, /* at least one format must be supported */
807 };
808
809 /* Required: vertex fetch support. */
810 static const struct st_extension_format_mapping vertex_mapping[] = {
811 { { o(EXT_vertex_array_bgra) },
812 { PIPE_FORMAT_B8G8R8A8_UNORM } },
813 { { o(ARB_vertex_type_2_10_10_10_rev) },
814 { PIPE_FORMAT_R10G10B10A2_UNORM,
815 PIPE_FORMAT_B10G10R10A2_UNORM,
816 PIPE_FORMAT_R10G10B10A2_SNORM,
817 PIPE_FORMAT_B10G10R10A2_SNORM,
818 PIPE_FORMAT_R10G10B10A2_USCALED,
819 PIPE_FORMAT_B10G10R10A2_USCALED,
820 PIPE_FORMAT_R10G10B10A2_SSCALED,
821 PIPE_FORMAT_B10G10R10A2_SSCALED } },
822 { { o(ARB_vertex_type_10f_11f_11f_rev) },
823 { PIPE_FORMAT_R11G11B10_FLOAT } },
824 };
825
826 static const struct st_extension_format_mapping tbo_rgb32[] = {
827 { {o(ARB_texture_buffer_object_rgb32) },
828 { PIPE_FORMAT_R32G32B32_FLOAT,
829 PIPE_FORMAT_R32G32B32_UINT,
830 PIPE_FORMAT_R32G32B32_SINT,
831 } },
832 };
833
834 /*
835 * Extensions that are supported by all Gallium drivers:
836 */
837 extensions->ARB_ES2_compatibility = GL_TRUE;
838 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
839 extensions->ARB_explicit_attrib_location = GL_TRUE;
840 extensions->ARB_explicit_uniform_location = GL_TRUE;
841 extensions->ARB_fragment_coord_conventions = GL_TRUE;
842 extensions->ARB_fragment_program = GL_TRUE;
843 extensions->ARB_fragment_shader = GL_TRUE;
844 extensions->ARB_half_float_vertex = GL_TRUE;
845 extensions->ARB_internalformat_query = GL_TRUE;
846 extensions->ARB_internalformat_query2 = GL_TRUE;
847 extensions->ARB_map_buffer_range = GL_TRUE;
848 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
849 extensions->ARB_texture_cube_map = GL_TRUE;
850 extensions->ARB_texture_env_combine = GL_TRUE;
851 extensions->ARB_texture_env_crossbar = GL_TRUE;
852 extensions->ARB_texture_env_dot3 = GL_TRUE;
853 extensions->ARB_vertex_program = GL_TRUE;
854 extensions->ARB_vertex_shader = GL_TRUE;
855
856 extensions->EXT_blend_color = GL_TRUE;
857 extensions->EXT_blend_func_separate = GL_TRUE;
858 extensions->EXT_blend_minmax = GL_TRUE;
859 extensions->EXT_gpu_program_parameters = GL_TRUE;
860 extensions->EXT_pixel_buffer_object = GL_TRUE;
861 extensions->EXT_point_parameters = GL_TRUE;
862 extensions->EXT_provoking_vertex = GL_TRUE;
863
864 extensions->EXT_texture_env_dot3 = GL_TRUE;
865
866 extensions->ATI_fragment_shader = GL_TRUE;
867 extensions->ATI_texture_env_combine3 = GL_TRUE;
868
869 extensions->MESA_pack_invert = GL_TRUE;
870
871 extensions->NV_fog_distance = GL_TRUE;
872 extensions->NV_texture_env_combine4 = GL_TRUE;
873 extensions->NV_texture_rectangle = GL_TRUE;
874
875 extensions->OES_EGL_image = GL_TRUE;
876 extensions->OES_EGL_image_external = GL_TRUE;
877 extensions->OES_draw_texture = GL_TRUE;
878
879 /* Expose the extensions which directly correspond to gallium caps. */
880 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
881 if (screen->get_param(screen, cap_mapping[i].cap)) {
882 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
883 }
884 }
885
886 /* Expose the extensions which directly correspond to gallium formats. */
887 init_format_extensions(screen, extensions, rendertarget_mapping,
888 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
889 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
890 init_format_extensions(screen, extensions, depthstencil_mapping,
891 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
892 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
893 init_format_extensions(screen, extensions, texture_mapping,
894 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
895 PIPE_BIND_SAMPLER_VIEW);
896 init_format_extensions(screen, extensions, vertex_mapping,
897 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
898 PIPE_BIND_VERTEX_BUFFER);
899
900 /* Figure out GLSL support and set GLSLVersion to it. */
901 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
902
903 _mesa_override_glsl_version(consts);
904
905 if (options->force_glsl_version > 0 &&
906 options->force_glsl_version <= consts->GLSLVersion) {
907 consts->ForceGLSLVersion = options->force_glsl_version;
908 }
909
910 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
911
912 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
913
914 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
915
916 consts->dri_config_options_sha1 = options->config_options_sha1;
917
918 if (consts->GLSLVersion >= 400)
919 extensions->ARB_gpu_shader5 = GL_TRUE;
920 if (consts->GLSLVersion >= 410)
921 extensions->ARB_shader_precision = GL_TRUE;
922
923 /* This extension needs full OpenGL 3.2, but we don't know if that's
924 * supported at this point. Only check the GLSL version. */
925 if (consts->GLSLVersion >= 150 &&
926 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
927 extensions->AMD_vertex_shader_layer = GL_TRUE;
928 }
929
930 if (consts->GLSLVersion >= 140) {
931 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS) &&
932 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
933 PIPE_SHADER_CAP_PREFERRED_IR) == PIPE_SHADER_IR_TGSI)
934 extensions->ARB_enhanced_layouts = GL_TRUE;
935 }
936
937 if (consts->GLSLVersion >= 130) {
938 consts->NativeIntegers = GL_TRUE;
939 consts->MaxClipPlanes = 8;
940
941 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
942 consts->VertexID_is_zero_based = GL_TRUE;
943 }
944
945 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
946 extensions->ARB_conservative_depth = GL_TRUE;
947 extensions->ARB_shading_language_packing = GL_TRUE;
948 extensions->OES_depth_texture_cube_map = GL_TRUE;
949 extensions->ARB_shading_language_420pack = GL_TRUE;
950 extensions->ARB_texture_query_levels = GL_TRUE;
951
952 if (!options->disable_shader_bit_encoding) {
953 extensions->ARB_shader_bit_encoding = GL_TRUE;
954 }
955
956 extensions->EXT_shader_integer_mix = GL_TRUE;
957 extensions->ARB_arrays_of_arrays = GL_TRUE;
958 extensions->MESA_shader_integer_functions = GL_TRUE;
959 } else {
960 /* Optional integer support for GLSL 1.2. */
961 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
962 PIPE_SHADER_CAP_INTEGERS) &&
963 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
964 PIPE_SHADER_CAP_INTEGERS)) {
965 consts->NativeIntegers = GL_TRUE;
966
967 extensions->EXT_shader_integer_mix = GL_TRUE;
968 }
969
970 /* Integer textures make no sense before GLSL 1.30 */
971 extensions->EXT_texture_integer = GL_FALSE;
972 }
973
974 consts->GLSLZeroInit = options->glsl_zero_init;
975
976 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
977
978 /* Below are the cases which cannot be moved into tables easily. */
979
980 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
981 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
982 extensions->ARB_tessellation_shader = GL_TRUE;
983 }
984
985 /* What this is really checking for is the ability to support multiple
986 * invocations of a geometry shader. There is no separate cap for that, so
987 * we check the GLSLVersion.
988 */
989 if (consts->GLSLVersion >= 400 &&
990 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
991 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
992 extensions->OES_geometry_shader = GL_TRUE;
993 }
994
995 if (screen->fence_finish) {
996 extensions->ARB_sync = GL_TRUE;
997 }
998
999 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1000 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1001 */
1002 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
1003 extensions->ARB_gpu_shader5;
1004
1005 /* Maximum sample count. */
1006 {
1007 static const enum pipe_format color_formats[] = {
1008 PIPE_FORMAT_R8G8B8A8_UNORM,
1009 PIPE_FORMAT_B8G8R8A8_UNORM,
1010 PIPE_FORMAT_A8R8G8B8_UNORM,
1011 PIPE_FORMAT_A8B8G8R8_UNORM,
1012 };
1013 static const enum pipe_format depth_formats[] = {
1014 PIPE_FORMAT_Z16_UNORM,
1015 PIPE_FORMAT_Z24X8_UNORM,
1016 PIPE_FORMAT_X8Z24_UNORM,
1017 PIPE_FORMAT_Z32_UNORM,
1018 PIPE_FORMAT_Z32_FLOAT
1019 };
1020 static const enum pipe_format int_formats[] = {
1021 PIPE_FORMAT_R8G8B8A8_SINT
1022 };
1023 static const enum pipe_format void_formats[] = {
1024 PIPE_FORMAT_NONE
1025 };
1026
1027 consts->MaxSamples =
1028 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1029 color_formats, 16,
1030 PIPE_BIND_RENDER_TARGET);
1031
1032 consts->MaxImageSamples =
1033 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1034 color_formats, 16,
1035 PIPE_BIND_SHADER_IMAGE);
1036
1037 consts->MaxColorTextureSamples =
1038 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1039 color_formats, consts->MaxSamples,
1040 PIPE_BIND_SAMPLER_VIEW);
1041
1042 consts->MaxDepthTextureSamples =
1043 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1044 depth_formats, consts->MaxSamples,
1045 PIPE_BIND_SAMPLER_VIEW);
1046
1047 consts->MaxIntegerSamples =
1048 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1049 int_formats, consts->MaxSamples,
1050 PIPE_BIND_SAMPLER_VIEW);
1051
1052 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1053 consts->MaxFramebufferSamples =
1054 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1055 void_formats, 32,
1056 PIPE_BIND_RENDER_TARGET);
1057 }
1058
1059 if (consts->MaxSamples >= 2) {
1060 /* Real MSAA support */
1061 extensions->EXT_framebuffer_multisample = GL_TRUE;
1062 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1063 }
1064 else if (consts->MaxSamples > 0 &&
1065 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1066 /* fake MSAA support */
1067 consts->FakeSWMSAA = GL_TRUE;
1068 extensions->EXT_framebuffer_multisample = GL_TRUE;
1069 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1070 extensions->ARB_texture_multisample = GL_TRUE;
1071 }
1072
1073 if (consts->MaxDualSourceDrawBuffers > 0 &&
1074 !options->disable_blend_func_extended)
1075 extensions->ARB_blend_func_extended = GL_TRUE;
1076
1077 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1078 extensions->ARB_timer_query) {
1079 extensions->EXT_timer_query = GL_TRUE;
1080 }
1081
1082 if (extensions->ARB_transform_feedback2 &&
1083 extensions->ARB_draw_instanced) {
1084 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1085 }
1086 if (options->force_glsl_extensions_warn)
1087 consts->ForceGLSLExtensionsWarn = 1;
1088
1089 if (options->disable_glsl_line_continuations)
1090 consts->DisableGLSLLineContinuations = 1;
1091
1092 if (options->allow_glsl_extension_directive_midshader)
1093 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1094
1095 consts->MinMapBufferAlignment =
1096 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1097
1098 if (extensions->ARB_texture_buffer_object) {
1099 consts->MaxTextureBufferSize =
1100 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1101 (1u << 31) - 1);
1102 consts->TextureBufferOffsetAlignment =
1103 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1104
1105 if (consts->TextureBufferOffsetAlignment)
1106 extensions->ARB_texture_buffer_range = GL_TRUE;
1107
1108 init_format_extensions(screen, extensions, tbo_rgb32,
1109 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1110 PIPE_BIND_SAMPLER_VIEW);
1111 }
1112
1113 extensions->OES_texture_buffer =
1114 extensions->ARB_texture_buffer_object &&
1115 extensions->ARB_texture_buffer_range &&
1116 extensions->ARB_texture_buffer_object_rgb32 &&
1117 extensions->ARB_shader_image_load_store;
1118
1119 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1120 * If the number of available texture indirections is very limited, then we
1121 * prefer to disable varying packing rather than run the risk of varying
1122 * packing preventing a shader from running.
1123 */
1124 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1125 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1126 /* We can't disable varying packing if transform feedback is available,
1127 * because transform feedback code assumes a packed varying layout.
1128 */
1129 if (!extensions->EXT_transform_feedback)
1130 consts->DisableVaryingPacking = GL_TRUE;
1131 }
1132
1133 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1134 if (consts->MaxViewports >= 16) {
1135 if (consts->GLSLVersion >= 400) {
1136 consts->ViewportBounds.Min = -32768.0;
1137 consts->ViewportBounds.Max = 32767.0;
1138 } else {
1139 consts->ViewportBounds.Min = -16384.0;
1140 consts->ViewportBounds.Max = 16383.0;
1141 }
1142 extensions->ARB_viewport_array = GL_TRUE;
1143 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1144 if (extensions->AMD_vertex_shader_layer)
1145 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1146 }
1147
1148 if (extensions->AMD_vertex_shader_layer &&
1149 extensions->AMD_vertex_shader_viewport_index &&
1150 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1151 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1152
1153 /* ARB_framebuffer_no_attachments */
1154 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1155 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1156 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1157 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1158 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1159
1160 /* GL_ARB_ES3_compatibility.
1161 *
1162 * Assume that ES3 is supported if GLSL 3.30 is supported.
1163 * (OpenGL 3.3 is a requirement for that extension.)
1164 */
1165 if (consts->GLSLVersion >= 330 &&
1166 /* Requirements for ETC2 emulation. */
1167 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1168 PIPE_TEXTURE_2D, 0,
1169 PIPE_BIND_SAMPLER_VIEW) &&
1170 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1171 PIPE_TEXTURE_2D, 0,
1172 PIPE_BIND_SAMPLER_VIEW) &&
1173 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1174 PIPE_TEXTURE_2D, 0,
1175 PIPE_BIND_SAMPLER_VIEW) &&
1176 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1177 PIPE_TEXTURE_2D, 0,
1178 PIPE_BIND_SAMPLER_VIEW) &&
1179 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1180 PIPE_TEXTURE_2D, 0,
1181 PIPE_BIND_SAMPLER_VIEW) &&
1182 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1183 PIPE_TEXTURE_2D, 0,
1184 PIPE_BIND_SAMPLER_VIEW)) {
1185 extensions->ARB_ES3_compatibility = GL_TRUE;
1186 }
1187
1188 #ifdef HAVE_ST_VDPAU
1189 if (screen->get_video_param &&
1190 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1191 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1192 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1193 extensions->NV_vdpau_interop = GL_TRUE;
1194 }
1195 #endif
1196
1197 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1198 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1199 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1200 }
1201
1202 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1203 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1204 extensions->GREMEDY_string_marker = GL_TRUE;
1205
1206 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1207 int compute_supported_irs =
1208 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1209 PIPE_SHADER_CAP_SUPPORTED_IRS);
1210 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1211 uint64_t grid_size[3], block_size[3];
1212 uint64_t max_local_size, max_threads_per_block;
1213
1214 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1215 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1216 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1217 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1218 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1219 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1220 &max_threads_per_block);
1221 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1222 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1223 &max_local_size);
1224
1225 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1226 consts->MaxComputeSharedMemorySize = max_local_size;
1227
1228 for (i = 0; i < 3; i++) {
1229 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1230 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1231 }
1232
1233 extensions->ARB_compute_shader =
1234 extensions->ARB_shader_image_load_store &&
1235 extensions->ARB_shader_atomic_counters;
1236
1237 if (extensions->ARB_compute_shader) {
1238 uint64_t max_variable_threads_per_block = 0;
1239
1240 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1241 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1242 &max_variable_threads_per_block);
1243
1244 for (i = 0; i < 3; i++) {
1245 /* Clamp the values to avoid having a local work group size
1246 * greater than the maximum number of invocations.
1247 */
1248 consts->MaxComputeVariableGroupSize[i] =
1249 MIN2(consts->MaxComputeWorkGroupSize[i],
1250 max_variable_threads_per_block);
1251 }
1252 consts->MaxComputeVariableGroupInvocations =
1253 max_variable_threads_per_block;
1254
1255 extensions->ARB_compute_variable_group_size =
1256 max_variable_threads_per_block > 0;
1257 }
1258 }
1259 }
1260
1261 if (extensions->EXT_texture_filter_anisotropic &&
1262 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1263 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1264
1265 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1266
1267 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1268 * there's no clean way of telling whether we would support ES 3.1 from
1269 * here, so copy the condition from compute_version_es2 here. A lot of
1270 * these are redunant, but simpler to just have a (near-)exact copy here.
1271 */
1272 extensions->ARB_ES3_1_compatibility =
1273 extensions->ARB_ES3_compatibility &&
1274 extensions->ARB_arrays_of_arrays &&
1275 extensions->ARB_compute_shader &&
1276 extensions->ARB_draw_indirect &&
1277 extensions->ARB_explicit_uniform_location &&
1278 extensions->ARB_framebuffer_no_attachments &&
1279 extensions->ARB_shader_atomic_counters &&
1280 extensions->ARB_shader_image_load_store &&
1281 extensions->ARB_shader_image_size &&
1282 extensions->ARB_shader_storage_buffer_object &&
1283 extensions->ARB_shading_language_packing &&
1284 extensions->ARB_stencil_texturing &&
1285 extensions->ARB_texture_multisample &&
1286 extensions->ARB_gpu_shader5 &&
1287 extensions->EXT_shader_integer_mix;
1288
1289 extensions->OES_texture_cube_map_array =
1290 extensions->ARB_ES3_1_compatibility &&
1291 extensions->OES_geometry_shader &&
1292 extensions->ARB_texture_cube_map_array;
1293
1294 extensions->OES_viewport_array =
1295 extensions->ARB_ES3_1_compatibility &&
1296 extensions->OES_geometry_shader &&
1297 extensions->ARB_viewport_array;
1298
1299 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1300 consts->NoPrimitiveBoundingBoxOutput = true;
1301
1302 extensions->ANDROID_extension_pack_es31a =
1303 extensions->KHR_texture_compression_astc_ldr &&
1304 extensions->KHR_blend_equation_advanced &&
1305 extensions->OES_sample_variables &&
1306 extensions->ARB_shader_image_load_store &&
1307 extensions->ARB_texture_stencil8 &&
1308 extensions->ARB_texture_multisample &&
1309 extensions->OES_copy_image &&
1310 extensions->ARB_draw_buffers_blend &&
1311 extensions->OES_geometry_shader &&
1312 extensions->ARB_gpu_shader5 &&
1313 extensions->OES_primitive_bounding_box &&
1314 extensions->ARB_tessellation_shader &&
1315 extensions->ARB_texture_border_clamp &&
1316 extensions->OES_texture_buffer &&
1317 extensions->OES_texture_cube_map_array &&
1318 extensions->EXT_texture_sRGB_decode;
1319
1320 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1321 * before overall versions are selected. Also it's actually a subset of ES
1322 * 3.2, since it doesn't require ASTC or advanced blending.
1323 */
1324 extensions->ARB_ES3_2_compatibility =
1325 extensions->ARB_ES3_1_compatibility &&
1326 extensions->KHR_robustness &&
1327 extensions->ARB_copy_image &&
1328 extensions->ARB_draw_buffers_blend &&
1329 extensions->ARB_draw_elements_base_vertex &&
1330 extensions->OES_geometry_shader &&
1331 extensions->ARB_gpu_shader5 &&
1332 extensions->ARB_sample_shading &&
1333 extensions->ARB_tessellation_shader &&
1334 extensions->ARB_texture_border_clamp &&
1335 extensions->OES_texture_buffer &&
1336 extensions->ARB_texture_cube_map_array &&
1337 extensions->ARB_texture_stencil8 &&
1338 extensions->ARB_texture_multisample;
1339 }