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st/mesa: set UseSTD430AsDefaultPacking const based on CAP
[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
82 c->MaxTextureLevels
83 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
84 MAX_TEXTURE_LEVELS);
85
86 c->Max3DTextureLevels
87 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
88 MAX_3D_TEXTURE_LEVELS);
89
90 c->MaxCubeTextureLevels
91 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
92 MAX_CUBE_TEXTURE_LEVELS);
93
94 c->MaxTextureRectSize
95 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
96
97 c->MaxArrayTextureLayers
98 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
99
100 /* Define max viewport size and max renderbuffer size in terms of
101 * max texture size (note: max tex RECT size = max tex 2D size).
102 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
103 */
104 c->MaxViewportWidth =
105 c->MaxViewportHeight =
106 c->MaxRenderbufferSize = c->MaxTextureRectSize;
107
108 c->ViewportSubpixelBits =
109 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
110
111 c->MaxDrawBuffers = c->MaxColorAttachments =
112 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
113 1, MAX_DRAW_BUFFERS);
114
115 c->MaxDualSourceDrawBuffers =
116 _clamp(screen->get_param(screen,
117 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
118 0, MAX_DRAW_BUFFERS);
119
120 c->MaxLineWidth =
121 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
122 c->MaxLineWidthAA =
123 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
124
125 c->MaxPointSize =
126 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
127 c->MaxPointSizeAA =
128 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
129
130 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
131 * for non-aa sizes, but we can go down to 0.0 for aa points.
132 */
133 c->MinPointSize = 1.0f;
134 c->MinPointSizeAA = 0.0f;
135
136 c->MaxTextureMaxAnisotropy =
137 _maxf(2.0f,
138 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
139
140 c->MaxTextureLodBias =
141 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
142
143 c->QuadsFollowProvokingVertexConvention =
144 screen->get_param(screen,
145 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
146
147 c->MaxUniformBlockSize =
148 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
149 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
150 if (c->MaxUniformBlockSize < 16384) {
151 can_ubo = FALSE;
152 }
153
154 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
155 struct gl_shader_compiler_options *options;
156 struct gl_program_constants *pc;
157
158 switch (sh) {
159 case PIPE_SHADER_FRAGMENT:
160 pc = &c->Program[MESA_SHADER_FRAGMENT];
161 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
162 break;
163 case PIPE_SHADER_VERTEX:
164 pc = &c->Program[MESA_SHADER_VERTEX];
165 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
166 break;
167 case PIPE_SHADER_GEOMETRY:
168 pc = &c->Program[MESA_SHADER_GEOMETRY];
169 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
170 break;
171 case PIPE_SHADER_TESS_CTRL:
172 pc = &c->Program[MESA_SHADER_TESS_CTRL];
173 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
174 break;
175 case PIPE_SHADER_TESS_EVAL:
176 pc = &c->Program[MESA_SHADER_TESS_EVAL];
177 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
178 break;
179 case PIPE_SHADER_COMPUTE:
180 pc = &c->Program[MESA_SHADER_COMPUTE];
181 options = &c->ShaderCompilerOptions[MESA_SHADER_COMPUTE];
182
183 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
184 continue;
185 supported_irs =
186 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
187 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
188 continue;
189 break;
190 default:
191 assert(0);
192 }
193
194 pc->MaxTextureImageUnits =
195 _min(screen->get_shader_param(screen, sh,
196 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
197 MAX_TEXTURE_IMAGE_UNITS);
198
199 pc->MaxInstructions =
200 pc->MaxNativeInstructions =
201 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
202 pc->MaxAluInstructions =
203 pc->MaxNativeAluInstructions =
204 screen->get_shader_param(screen, sh,
205 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
206 pc->MaxTexInstructions =
207 pc->MaxNativeTexInstructions =
208 screen->get_shader_param(screen, sh,
209 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
210 pc->MaxTexIndirections =
211 pc->MaxNativeTexIndirections =
212 screen->get_shader_param(screen, sh,
213 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
214 pc->MaxAttribs =
215 pc->MaxNativeAttribs =
216 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
217 pc->MaxTemps =
218 pc->MaxNativeTemps =
219 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
220 pc->MaxAddressRegs =
221 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
222 pc->MaxParameters =
223 pc->MaxNativeParameters =
224 screen->get_shader_param(screen, sh,
225 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
226 pc->MaxInputComponents =
227 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
228 pc->MaxOutputComponents =
229 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
230
231 pc->MaxUniformComponents =
232 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
233
234 pc->MaxUniformBlocks =
235 screen->get_shader_param(screen, sh,
236 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
237 if (pc->MaxUniformBlocks)
238 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
239 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
240
241 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
242 c->MaxUniformBlockSize / 4 *
243 pc->MaxUniformBlocks);
244
245 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
246 pc->MaxAtomicBuffers = screen->get_shader_param(
247 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
248 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
249
250 pc->MaxImageUniforms = screen->get_shader_param(
251 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
252
253 /* Gallium doesn't really care about local vs. env parameters so use the
254 * same limits.
255 */
256 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
257 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
258
259 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
260 pc->LowInt.RangeMin = 31;
261 pc->LowInt.RangeMax = 30;
262 pc->LowInt.Precision = 0;
263 pc->MediumInt = pc->HighInt = pc->LowInt;
264 }
265
266 /* TODO: make these more fine-grained if anyone needs it */
267 options->MaxIfDepth =
268 screen->get_shader_param(screen, sh,
269 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
270 options->EmitNoLoops =
271 !screen->get_shader_param(screen, sh,
272 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
273 options->EmitNoMainReturn =
274 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
275
276 options->EmitNoCont =
277 !screen->get_shader_param(screen, sh,
278 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
279
280 options->EmitNoIndirectInput =
281 !screen->get_shader_param(screen, sh,
282 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
283 options->EmitNoIndirectOutput =
284 !screen->get_shader_param(screen, sh,
285 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
286 options->EmitNoIndirectTemp =
287 !screen->get_shader_param(screen, sh,
288 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
289 options->EmitNoIndirectUniform =
290 !screen->get_shader_param(screen, sh,
291 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
292
293 if (pc->MaxNativeInstructions &&
294 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
295 can_ubo = FALSE;
296 }
297
298 if (options->EmitNoLoops)
299 options->MaxUnrollIterations =
300 MIN2(screen->get_shader_param(screen, sh,
301 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
302 65536);
303 else
304 options->MaxUnrollIterations =
305 screen->get_shader_param(screen, sh,
306 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
307
308 options->LowerCombinedClipCullDistance = true;
309 options->LowerBufferInterfaceBlocks = true;
310 }
311
312 c->GLSLOptimizeConservatively =
313 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
314 c->LowerTessLevel = true;
315 c->LowerCsDerivedVariables = true;
316 c->PrimitiveRestartForPatches =
317 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
318
319 c->MaxCombinedTextureImageUnits =
320 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
321 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
322 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
323 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
324 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
325 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
326 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
327
328 /* This depends on program constants. */
329 c->MaxTextureCoordUnits
330 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
331 MAX_TEXTURE_COORD_UNITS);
332
333 c->MaxTextureUnits =
334 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
335 c->MaxTextureCoordUnits);
336
337 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
338 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
339
340 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
341 * of inputs. It's always 2 colors + N generic inputs. */
342 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
343 PIPE_SHADER_CAP_MAX_INPUTS);
344 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
345 c->MaxGeometryOutputVertices =
346 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
347 c->MaxGeometryTotalOutputComponents =
348 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
349 c->MaxTessPatchComponents =
350 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
351 MAX_VARYING) * 4;
352
353 c->MinProgramTexelOffset =
354 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
355 c->MaxProgramTexelOffset =
356 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
357
358 c->MaxProgramTextureGatherComponents =
359 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
360 c->MinProgramTextureGatherOffset =
361 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
362 c->MaxProgramTextureGatherOffset =
363 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
364
365 c->MaxTransformFeedbackBuffers =
366 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
367 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
368 MAX_FEEDBACK_BUFFERS);
369 c->MaxTransformFeedbackSeparateComponents =
370 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
371 c->MaxTransformFeedbackInterleavedComponents =
372 screen->get_param(screen,
373 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
374 c->MaxVertexStreams =
375 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
376
377 /* The vertex stream must fit into pipe_stream_output_info::stream */
378 assert(c->MaxVertexStreams <= 4);
379
380 c->MaxVertexAttribStride
381 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
382
383 c->StripTextureBorder = GL_TRUE;
384
385 c->GLSLSkipStrictMaxUniformLimitCheck =
386 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
387
388 c->UniformBufferOffsetAlignment =
389 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
390
391 if (can_ubo) {
392 extensions->ARB_uniform_buffer_object = GL_TRUE;
393 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
394 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
395 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
396 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
397 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
398 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
399 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
400 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
401 }
402
403 c->GLSLFragCoordIsSysVal =
404 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
405 c->GLSLFrontFacingIsSysVal =
406 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
407
408 c->MaxAtomicBufferBindings =
409 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
410 c->MaxCombinedAtomicBuffers =
411 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
412 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
413 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
414 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
415 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
416 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
417
418 if (c->MaxCombinedAtomicBuffers > 0) {
419 extensions->ARB_shader_atomic_counters = GL_TRUE;
420 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
421 }
422
423 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
424 c->ShaderStorageBufferOffsetAlignment =
425 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
426 if (c->ShaderStorageBufferOffsetAlignment) {
427 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
428 c->MaxCombinedAtomicBuffers;
429 c->MaxCombinedShaderOutputResources +=
430 c->MaxCombinedShaderStorageBlocks;
431 c->MaxShaderStorageBlockSize = 1 << 27;
432 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
433 }
434
435 c->MaxCombinedImageUniforms =
436 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
437 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
438 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
439 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
440 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
441 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
442 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
443 c->MaxImageUnits = MAX_IMAGE_UNITS;
444 if (c->MaxCombinedImageUniforms) {
445 extensions->ARB_shader_image_load_store = GL_TRUE;
446 extensions->ARB_shader_image_size = GL_TRUE;
447 }
448
449 /* ARB_framebuffer_no_attachments */
450 c->MaxFramebufferWidth = c->MaxViewportWidth;
451 c->MaxFramebufferHeight = c->MaxViewportHeight;
452 /* NOTE: we cheat here a little by assuming that
453 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
454 * number of layers as we need, although we technically
455 * could have more the generality is not really useful
456 * in practicality.
457 */
458 c->MaxFramebufferLayers =
459 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
460
461 c->MaxWindowRectangles =
462 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
463
464 c->SparseBufferPageSize =
465 screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
466
467 c->AllowMappedBuffersDuringExecution =
468 screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
469
470 c->UseSTD430AsDefaultPacking =
471 screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
472 }
473
474
475 /**
476 * Given a member \c x of struct gl_extensions, return offset of
477 * \c x in bytes.
478 */
479 #define o(x) offsetof(struct gl_extensions, x)
480
481
482 struct st_extension_cap_mapping {
483 int extension_offset;
484 int cap;
485 };
486
487 struct st_extension_format_mapping {
488 int extension_offset[2];
489 enum pipe_format format[32];
490
491 /* If TRUE, at least one format must be supported for the extensions to be
492 * advertised. If FALSE, all the formats must be supported. */
493 GLboolean need_at_least_one;
494 };
495
496 /**
497 * Enable extensions if certain pipe formats are supported by the driver.
498 * What extensions will be enabled and what formats must be supported is
499 * described by the array of st_extension_format_mapping.
500 *
501 * target and bind_flags are passed to is_format_supported.
502 */
503 static void
504 init_format_extensions(struct pipe_screen *screen,
505 struct gl_extensions *extensions,
506 const struct st_extension_format_mapping *mapping,
507 unsigned num_mappings,
508 enum pipe_texture_target target,
509 unsigned bind_flags)
510 {
511 GLboolean *extension_table = (GLboolean *) extensions;
512 unsigned i;
513 int j;
514 int num_formats = ARRAY_SIZE(mapping->format);
515 int num_ext = ARRAY_SIZE(mapping->extension_offset);
516
517 for (i = 0; i < num_mappings; i++) {
518 int num_supported = 0;
519
520 /* Examine each format in the list. */
521 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
522 if (screen->is_format_supported(screen, mapping[i].format[j],
523 target, 0, bind_flags)) {
524 num_supported++;
525 }
526 }
527
528 if (!num_supported ||
529 (!mapping[i].need_at_least_one && num_supported != j)) {
530 continue;
531 }
532
533 /* Enable all extensions in the list. */
534 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
535 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
536 }
537 }
538
539
540 /**
541 * Given a list of formats and bind flags, return the maximum number
542 * of samples supported by any of those formats.
543 */
544 static unsigned
545 get_max_samples_for_formats(struct pipe_screen *screen,
546 unsigned num_formats,
547 const enum pipe_format *formats,
548 unsigned max_samples,
549 unsigned bind)
550 {
551 unsigned i, f;
552
553 for (i = max_samples; i > 0; --i) {
554 for (f = 0; f < num_formats; f++) {
555 if (screen->is_format_supported(screen, formats[f],
556 PIPE_TEXTURE_2D, i, bind)) {
557 return i;
558 }
559 }
560 }
561 return 0;
562 }
563
564
565 /**
566 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
567 * which GL extensions are supported.
568 * Quite a few extensions are always supported because they are standard
569 * features or can be built on top of other gallium features.
570 * Some fine tuning may still be needed.
571 */
572 void st_init_extensions(struct pipe_screen *screen,
573 struct gl_constants *consts,
574 struct gl_extensions *extensions,
575 struct st_config_options *options,
576 boolean has_lib_dxtc)
577 {
578 unsigned i;
579 GLboolean *extension_table = (GLboolean *) extensions;
580
581 static const struct st_extension_cap_mapping cap_mapping[] = {
582 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
583 { o(ARB_bindless_texture), PIPE_CAP_BINDLESS_TEXTURE },
584 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
585 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
586 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
587 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
588 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
589 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
590 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
591 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
592 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
593 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
594 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
595 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
596 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
597 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
598 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
599 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
600 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
601 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
602 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
603 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
604 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
605 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
606 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
607 { o(ARB_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
608 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
609 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
610 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
611 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
612 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
613 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
614 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
615 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
616 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
617 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
618 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
619 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
620 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
621 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
622 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
623 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
624 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
625 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
626 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
627 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
628 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
629 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
630 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
631 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
632 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
633 { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW },
634
635 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
636
637 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
638 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
639 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
640 { o(EXT_memory_object), PIPE_CAP_MEMOBJ },
641 { o(EXT_memory_object_fd), PIPE_CAP_MEMOBJ },
642 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
643 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
644 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
645 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
646 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
647 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
648 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
649
650 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
651 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
652 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
653 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
654 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
655 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
656 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
657 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
658 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
659 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
660 /* GL_NV_point_sprite is not supported by gallium because we don't
661 * support the GL_POINT_SPRITE_R_MODE_NV option. */
662
663 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
664 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
665 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
666 };
667
668 /* Required: render target and sampler support */
669 static const struct st_extension_format_mapping rendertarget_mapping[] = {
670 { { o(ARB_texture_float) },
671 { PIPE_FORMAT_R32G32B32A32_FLOAT,
672 PIPE_FORMAT_R16G16B16A16_FLOAT } },
673
674 { { o(OES_texture_float) },
675 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
676
677 { { o(OES_texture_half_float) },
678 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
679
680 { { o(ARB_texture_rgb10_a2ui) },
681 { PIPE_FORMAT_R10G10B10A2_UINT,
682 PIPE_FORMAT_B10G10R10A2_UINT },
683 GL_TRUE }, /* at least one format must be supported */
684
685 { { o(EXT_framebuffer_sRGB) },
686 { PIPE_FORMAT_A8B8G8R8_SRGB,
687 PIPE_FORMAT_B8G8R8A8_SRGB },
688 GL_TRUE }, /* at least one format must be supported */
689
690 { { o(EXT_packed_float) },
691 { PIPE_FORMAT_R11G11B10_FLOAT } },
692
693 { { o(EXT_texture_integer) },
694 { PIPE_FORMAT_R32G32B32A32_UINT,
695 PIPE_FORMAT_R32G32B32A32_SINT } },
696
697 { { o(ARB_texture_rg) },
698 { PIPE_FORMAT_R8_UNORM,
699 PIPE_FORMAT_R8G8_UNORM } },
700 };
701
702 /* Required: depth stencil and sampler support */
703 static const struct st_extension_format_mapping depthstencil_mapping[] = {
704 { { o(ARB_depth_buffer_float) },
705 { PIPE_FORMAT_Z32_FLOAT,
706 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
707 };
708
709 /* Required: sampler support */
710 static const struct st_extension_format_mapping texture_mapping[] = {
711 { { o(ARB_texture_compression_rgtc) },
712 { PIPE_FORMAT_RGTC1_UNORM,
713 PIPE_FORMAT_RGTC1_SNORM,
714 PIPE_FORMAT_RGTC2_UNORM,
715 PIPE_FORMAT_RGTC2_SNORM } },
716
717 { { o(EXT_texture_compression_latc) },
718 { PIPE_FORMAT_LATC1_UNORM,
719 PIPE_FORMAT_LATC1_SNORM,
720 PIPE_FORMAT_LATC2_UNORM,
721 PIPE_FORMAT_LATC2_SNORM } },
722
723 { { o(EXT_texture_compression_s3tc),
724 o(ANGLE_texture_compression_dxt) },
725 { PIPE_FORMAT_DXT1_RGB,
726 PIPE_FORMAT_DXT1_RGBA,
727 PIPE_FORMAT_DXT3_RGBA,
728 PIPE_FORMAT_DXT5_RGBA } },
729
730 { { o(ARB_texture_compression_bptc) },
731 { PIPE_FORMAT_BPTC_RGBA_UNORM,
732 PIPE_FORMAT_BPTC_SRGBA,
733 PIPE_FORMAT_BPTC_RGB_FLOAT,
734 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
735
736 { { o(KHR_texture_compression_astc_ldr) },
737 { PIPE_FORMAT_ASTC_4x4,
738 PIPE_FORMAT_ASTC_5x4,
739 PIPE_FORMAT_ASTC_5x5,
740 PIPE_FORMAT_ASTC_6x5,
741 PIPE_FORMAT_ASTC_6x6,
742 PIPE_FORMAT_ASTC_8x5,
743 PIPE_FORMAT_ASTC_8x6,
744 PIPE_FORMAT_ASTC_8x8,
745 PIPE_FORMAT_ASTC_10x5,
746 PIPE_FORMAT_ASTC_10x6,
747 PIPE_FORMAT_ASTC_10x8,
748 PIPE_FORMAT_ASTC_10x10,
749 PIPE_FORMAT_ASTC_12x10,
750 PIPE_FORMAT_ASTC_12x12,
751 PIPE_FORMAT_ASTC_4x4_SRGB,
752 PIPE_FORMAT_ASTC_5x4_SRGB,
753 PIPE_FORMAT_ASTC_5x5_SRGB,
754 PIPE_FORMAT_ASTC_6x5_SRGB,
755 PIPE_FORMAT_ASTC_6x6_SRGB,
756 PIPE_FORMAT_ASTC_8x5_SRGB,
757 PIPE_FORMAT_ASTC_8x6_SRGB,
758 PIPE_FORMAT_ASTC_8x8_SRGB,
759 PIPE_FORMAT_ASTC_10x5_SRGB,
760 PIPE_FORMAT_ASTC_10x6_SRGB,
761 PIPE_FORMAT_ASTC_10x8_SRGB,
762 PIPE_FORMAT_ASTC_10x10_SRGB,
763 PIPE_FORMAT_ASTC_12x10_SRGB,
764 PIPE_FORMAT_ASTC_12x12_SRGB } },
765
766 { { o(EXT_texture_shared_exponent) },
767 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
768
769 { { o(EXT_texture_snorm) },
770 { PIPE_FORMAT_R8G8B8A8_SNORM } },
771
772 { { o(EXT_texture_sRGB),
773 o(EXT_texture_sRGB_decode) },
774 { PIPE_FORMAT_A8B8G8R8_SRGB,
775 PIPE_FORMAT_B8G8R8A8_SRGB },
776 GL_TRUE }, /* at least one format must be supported */
777
778 { { o(ATI_texture_compression_3dc) },
779 { PIPE_FORMAT_LATC2_UNORM } },
780
781 { { o(MESA_ycbcr_texture) },
782 { PIPE_FORMAT_UYVY,
783 PIPE_FORMAT_YUYV },
784 GL_TRUE }, /* at least one format must be supported */
785
786 { { o(OES_compressed_ETC1_RGB8_texture) },
787 { PIPE_FORMAT_ETC1_RGB8,
788 PIPE_FORMAT_R8G8B8A8_UNORM },
789 GL_TRUE }, /* at least one format must be supported */
790
791 { { o(ARB_stencil_texturing),
792 o(ARB_texture_stencil8) },
793 { PIPE_FORMAT_X24S8_UINT,
794 PIPE_FORMAT_S8X24_UINT },
795 GL_TRUE }, /* at least one format must be supported */
796 };
797
798 /* Required: vertex fetch support. */
799 static const struct st_extension_format_mapping vertex_mapping[] = {
800 { { o(EXT_vertex_array_bgra) },
801 { PIPE_FORMAT_B8G8R8A8_UNORM } },
802 { { o(ARB_vertex_type_2_10_10_10_rev) },
803 { PIPE_FORMAT_R10G10B10A2_UNORM,
804 PIPE_FORMAT_B10G10R10A2_UNORM,
805 PIPE_FORMAT_R10G10B10A2_SNORM,
806 PIPE_FORMAT_B10G10R10A2_SNORM,
807 PIPE_FORMAT_R10G10B10A2_USCALED,
808 PIPE_FORMAT_B10G10R10A2_USCALED,
809 PIPE_FORMAT_R10G10B10A2_SSCALED,
810 PIPE_FORMAT_B10G10R10A2_SSCALED } },
811 { { o(ARB_vertex_type_10f_11f_11f_rev) },
812 { PIPE_FORMAT_R11G11B10_FLOAT } },
813 };
814
815 static const struct st_extension_format_mapping tbo_rgb32[] = {
816 { {o(ARB_texture_buffer_object_rgb32) },
817 { PIPE_FORMAT_R32G32B32_FLOAT,
818 PIPE_FORMAT_R32G32B32_UINT,
819 PIPE_FORMAT_R32G32B32_SINT,
820 } },
821 };
822
823 /*
824 * Extensions that are supported by all Gallium drivers:
825 */
826 extensions->ARB_ES2_compatibility = GL_TRUE;
827 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
828 extensions->ARB_explicit_attrib_location = GL_TRUE;
829 extensions->ARB_explicit_uniform_location = GL_TRUE;
830 extensions->ARB_fragment_coord_conventions = GL_TRUE;
831 extensions->ARB_fragment_program = GL_TRUE;
832 extensions->ARB_fragment_shader = GL_TRUE;
833 extensions->ARB_half_float_vertex = GL_TRUE;
834 extensions->ARB_internalformat_query = GL_TRUE;
835 extensions->ARB_internalformat_query2 = GL_TRUE;
836 extensions->ARB_map_buffer_range = GL_TRUE;
837 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
838 extensions->ARB_texture_cube_map = GL_TRUE;
839 extensions->ARB_texture_env_combine = GL_TRUE;
840 extensions->ARB_texture_env_crossbar = GL_TRUE;
841 extensions->ARB_texture_env_dot3 = GL_TRUE;
842 extensions->ARB_vertex_program = GL_TRUE;
843 extensions->ARB_vertex_shader = GL_TRUE;
844
845 extensions->EXT_blend_color = GL_TRUE;
846 extensions->EXT_blend_func_separate = GL_TRUE;
847 extensions->EXT_blend_minmax = GL_TRUE;
848 extensions->EXT_gpu_program_parameters = GL_TRUE;
849 extensions->EXT_pixel_buffer_object = GL_TRUE;
850 extensions->EXT_point_parameters = GL_TRUE;
851 extensions->EXT_provoking_vertex = GL_TRUE;
852
853 extensions->EXT_texture_env_dot3 = GL_TRUE;
854
855 extensions->ATI_fragment_shader = GL_TRUE;
856 extensions->ATI_texture_env_combine3 = GL_TRUE;
857
858 extensions->MESA_pack_invert = GL_TRUE;
859
860 extensions->NV_fog_distance = GL_TRUE;
861 extensions->NV_texture_env_combine4 = GL_TRUE;
862 extensions->NV_texture_rectangle = GL_TRUE;
863
864 extensions->OES_EGL_image = GL_TRUE;
865 extensions->OES_EGL_image_external = GL_TRUE;
866 extensions->OES_draw_texture = GL_TRUE;
867
868 /* Expose the extensions which directly correspond to gallium caps. */
869 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
870 if (screen->get_param(screen, cap_mapping[i].cap)) {
871 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
872 }
873 }
874
875 /* Expose the extensions which directly correspond to gallium formats. */
876 init_format_extensions(screen, extensions, rendertarget_mapping,
877 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
878 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
879 init_format_extensions(screen, extensions, depthstencil_mapping,
880 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
881 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
882 init_format_extensions(screen, extensions, texture_mapping,
883 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
884 PIPE_BIND_SAMPLER_VIEW);
885 init_format_extensions(screen, extensions, vertex_mapping,
886 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
887 PIPE_BIND_VERTEX_BUFFER);
888
889 /* Figure out GLSL support and set GLSLVersion to it. */
890 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
891
892 _mesa_override_glsl_version(consts);
893
894 if (options->force_glsl_version > 0 &&
895 options->force_glsl_version <= consts->GLSLVersion) {
896 consts->ForceGLSLVersion = options->force_glsl_version;
897 }
898
899 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
900
901 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
902
903 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
904
905 consts->dri_config_options_sha1 = options->config_options_sha1;
906
907 if (consts->GLSLVersion >= 400)
908 extensions->ARB_gpu_shader5 = GL_TRUE;
909 if (consts->GLSLVersion >= 410)
910 extensions->ARB_shader_precision = GL_TRUE;
911
912 /* This extension needs full OpenGL 3.2, but we don't know if that's
913 * supported at this point. Only check the GLSL version. */
914 if (consts->GLSLVersion >= 150 &&
915 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
916 extensions->AMD_vertex_shader_layer = GL_TRUE;
917 }
918
919 if (consts->GLSLVersion >= 140) {
920 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS) &&
921 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
922 PIPE_SHADER_CAP_PREFERRED_IR) == PIPE_SHADER_IR_TGSI)
923 extensions->ARB_enhanced_layouts = GL_TRUE;
924 }
925
926 if (consts->GLSLVersion >= 130) {
927 consts->NativeIntegers = GL_TRUE;
928 consts->MaxClipPlanes = 8;
929
930 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
931 consts->VertexID_is_zero_based = GL_TRUE;
932 }
933
934 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
935 extensions->ARB_conservative_depth = GL_TRUE;
936 extensions->ARB_shading_language_packing = GL_TRUE;
937 extensions->OES_depth_texture_cube_map = GL_TRUE;
938 extensions->ARB_shading_language_420pack = GL_TRUE;
939 extensions->ARB_texture_query_levels = GL_TRUE;
940
941 if (!options->disable_shader_bit_encoding) {
942 extensions->ARB_shader_bit_encoding = GL_TRUE;
943 }
944
945 extensions->EXT_shader_integer_mix = GL_TRUE;
946 extensions->ARB_arrays_of_arrays = GL_TRUE;
947 extensions->MESA_shader_integer_functions = GL_TRUE;
948 } else {
949 /* Optional integer support for GLSL 1.2. */
950 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
951 PIPE_SHADER_CAP_INTEGERS) &&
952 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
953 PIPE_SHADER_CAP_INTEGERS)) {
954 consts->NativeIntegers = GL_TRUE;
955
956 extensions->EXT_shader_integer_mix = GL_TRUE;
957 }
958
959 /* Integer textures make no sense before GLSL 1.30 */
960 extensions->EXT_texture_integer = GL_FALSE;
961 }
962
963 consts->GLSLZeroInit = options->glsl_zero_init;
964
965 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
966
967 /* Below are the cases which cannot be moved into tables easily. */
968
969 if (!has_lib_dxtc && !options->force_s3tc_enable) {
970 extensions->EXT_texture_compression_s3tc = GL_FALSE;
971 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
972 }
973
974 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
975 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
976 extensions->ARB_tessellation_shader = GL_TRUE;
977 }
978
979 /* What this is really checking for is the ability to support multiple
980 * invocations of a geometry shader. There is no separate cap for that, so
981 * we check the GLSLVersion.
982 */
983 if (consts->GLSLVersion >= 400 &&
984 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
985 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
986 extensions->OES_geometry_shader = GL_TRUE;
987 }
988
989 if (screen->fence_finish) {
990 extensions->ARB_sync = GL_TRUE;
991 }
992
993 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
994 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
995 */
996 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
997 extensions->ARB_gpu_shader5;
998
999 /* Maximum sample count. */
1000 {
1001 static const enum pipe_format color_formats[] = {
1002 PIPE_FORMAT_R8G8B8A8_UNORM,
1003 PIPE_FORMAT_B8G8R8A8_UNORM,
1004 PIPE_FORMAT_A8R8G8B8_UNORM,
1005 PIPE_FORMAT_A8B8G8R8_UNORM,
1006 };
1007 static const enum pipe_format depth_formats[] = {
1008 PIPE_FORMAT_Z16_UNORM,
1009 PIPE_FORMAT_Z24X8_UNORM,
1010 PIPE_FORMAT_X8Z24_UNORM,
1011 PIPE_FORMAT_Z32_UNORM,
1012 PIPE_FORMAT_Z32_FLOAT
1013 };
1014 static const enum pipe_format int_formats[] = {
1015 PIPE_FORMAT_R8G8B8A8_SINT
1016 };
1017 static const enum pipe_format void_formats[] = {
1018 PIPE_FORMAT_NONE
1019 };
1020
1021 consts->MaxSamples =
1022 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1023 color_formats, 16,
1024 PIPE_BIND_RENDER_TARGET);
1025
1026 consts->MaxImageSamples =
1027 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1028 color_formats, 16,
1029 PIPE_BIND_SHADER_IMAGE);
1030
1031 consts->MaxColorTextureSamples =
1032 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1033 color_formats, consts->MaxSamples,
1034 PIPE_BIND_SAMPLER_VIEW);
1035
1036 consts->MaxDepthTextureSamples =
1037 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1038 depth_formats, consts->MaxSamples,
1039 PIPE_BIND_SAMPLER_VIEW);
1040
1041 consts->MaxIntegerSamples =
1042 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1043 int_formats, consts->MaxSamples,
1044 PIPE_BIND_SAMPLER_VIEW);
1045
1046 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1047 consts->MaxFramebufferSamples =
1048 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1049 void_formats, 32,
1050 PIPE_BIND_RENDER_TARGET);
1051 }
1052
1053 if (consts->MaxSamples >= 2) {
1054 /* Real MSAA support */
1055 extensions->EXT_framebuffer_multisample = GL_TRUE;
1056 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1057 }
1058 else if (consts->MaxSamples > 0 &&
1059 screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1060 /* fake MSAA support */
1061 consts->FakeSWMSAA = GL_TRUE;
1062 extensions->EXT_framebuffer_multisample = GL_TRUE;
1063 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1064 extensions->ARB_texture_multisample = GL_TRUE;
1065 }
1066
1067 if (consts->MaxDualSourceDrawBuffers > 0 &&
1068 !options->disable_blend_func_extended)
1069 extensions->ARB_blend_func_extended = GL_TRUE;
1070
1071 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1072 extensions->ARB_timer_query) {
1073 extensions->EXT_timer_query = GL_TRUE;
1074 }
1075
1076 if (extensions->ARB_transform_feedback2 &&
1077 extensions->ARB_draw_instanced) {
1078 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1079 }
1080 if (options->force_glsl_extensions_warn)
1081 consts->ForceGLSLExtensionsWarn = 1;
1082
1083 if (options->disable_glsl_line_continuations)
1084 consts->DisableGLSLLineContinuations = 1;
1085
1086 if (options->allow_glsl_extension_directive_midshader)
1087 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1088
1089 consts->MinMapBufferAlignment =
1090 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1091
1092 if (extensions->ARB_texture_buffer_object) {
1093 consts->MaxTextureBufferSize =
1094 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1095 (1u << 31) - 1);
1096 consts->TextureBufferOffsetAlignment =
1097 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1098
1099 if (consts->TextureBufferOffsetAlignment)
1100 extensions->ARB_texture_buffer_range = GL_TRUE;
1101
1102 init_format_extensions(screen, extensions, tbo_rgb32,
1103 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1104 PIPE_BIND_SAMPLER_VIEW);
1105 }
1106
1107 extensions->OES_texture_buffer =
1108 extensions->ARB_texture_buffer_object &&
1109 extensions->ARB_texture_buffer_range &&
1110 extensions->ARB_texture_buffer_object_rgb32 &&
1111 extensions->ARB_shader_image_load_store;
1112
1113 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1114 * If the number of available texture indirections is very limited, then we
1115 * prefer to disable varying packing rather than run the risk of varying
1116 * packing preventing a shader from running.
1117 */
1118 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1119 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1120 /* We can't disable varying packing if transform feedback is available,
1121 * because transform feedback code assumes a packed varying layout.
1122 */
1123 if (!extensions->EXT_transform_feedback)
1124 consts->DisableVaryingPacking = GL_TRUE;
1125 }
1126
1127 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1128 if (consts->MaxViewports >= 16) {
1129 if (consts->GLSLVersion >= 400) {
1130 consts->ViewportBounds.Min = -32768.0;
1131 consts->ViewportBounds.Max = 32767.0;
1132 } else {
1133 consts->ViewportBounds.Min = -16384.0;
1134 consts->ViewportBounds.Max = 16383.0;
1135 }
1136 extensions->ARB_viewport_array = GL_TRUE;
1137 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1138 if (extensions->AMD_vertex_shader_layer)
1139 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1140 }
1141
1142 if (extensions->AMD_vertex_shader_layer &&
1143 extensions->AMD_vertex_shader_viewport_index &&
1144 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1145 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1146
1147 /* ARB_framebuffer_no_attachments */
1148 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1149 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1150 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1151 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1152 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1153
1154 /* GL_ARB_ES3_compatibility.
1155 *
1156 * Assume that ES3 is supported if GLSL 3.30 is supported.
1157 * (OpenGL 3.3 is a requirement for that extension.)
1158 */
1159 if (consts->GLSLVersion >= 330 &&
1160 /* Requirements for ETC2 emulation. */
1161 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1162 PIPE_TEXTURE_2D, 0,
1163 PIPE_BIND_SAMPLER_VIEW) &&
1164 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1165 PIPE_TEXTURE_2D, 0,
1166 PIPE_BIND_SAMPLER_VIEW) &&
1167 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1168 PIPE_TEXTURE_2D, 0,
1169 PIPE_BIND_SAMPLER_VIEW) &&
1170 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1171 PIPE_TEXTURE_2D, 0,
1172 PIPE_BIND_SAMPLER_VIEW) &&
1173 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1174 PIPE_TEXTURE_2D, 0,
1175 PIPE_BIND_SAMPLER_VIEW) &&
1176 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1177 PIPE_TEXTURE_2D, 0,
1178 PIPE_BIND_SAMPLER_VIEW)) {
1179 extensions->ARB_ES3_compatibility = GL_TRUE;
1180 }
1181
1182 #ifdef HAVE_ST_VDPAU
1183 if (screen->get_video_param &&
1184 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1185 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1186 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1187 extensions->NV_vdpau_interop = GL_TRUE;
1188 }
1189 #endif
1190
1191 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1192 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1193 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1194 }
1195
1196 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1197 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1198 extensions->GREMEDY_string_marker = GL_TRUE;
1199
1200 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1201 int compute_supported_irs =
1202 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1203 PIPE_SHADER_CAP_SUPPORTED_IRS);
1204 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1205 uint64_t grid_size[3], block_size[3];
1206 uint64_t max_local_size, max_threads_per_block;
1207
1208 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1209 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1210 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1211 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1212 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1213 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1214 &max_threads_per_block);
1215 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1216 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1217 &max_local_size);
1218
1219 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1220 consts->MaxComputeSharedMemorySize = max_local_size;
1221
1222 for (i = 0; i < 3; i++) {
1223 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1224 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1225 }
1226
1227 extensions->ARB_compute_shader =
1228 extensions->ARB_shader_image_load_store &&
1229 extensions->ARB_shader_atomic_counters;
1230
1231 if (extensions->ARB_compute_shader) {
1232 uint64_t max_variable_threads_per_block = 0;
1233
1234 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1235 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1236 &max_variable_threads_per_block);
1237
1238 for (i = 0; i < 3; i++) {
1239 /* Clamp the values to avoid having a local work group size
1240 * greater than the maximum number of invocations.
1241 */
1242 consts->MaxComputeVariableGroupSize[i] =
1243 MIN2(consts->MaxComputeWorkGroupSize[i],
1244 max_variable_threads_per_block);
1245 }
1246 consts->MaxComputeVariableGroupInvocations =
1247 max_variable_threads_per_block;
1248
1249 extensions->ARB_compute_variable_group_size =
1250 max_variable_threads_per_block > 0;
1251 }
1252 }
1253 }
1254
1255 if (extensions->EXT_texture_filter_anisotropic &&
1256 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY) >= 16.0)
1257 extensions->ARB_texture_filter_anisotropic = GL_TRUE;
1258
1259 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1260
1261 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1262 * there's no clean way of telling whether we would support ES 3.1 from
1263 * here, so copy the condition from compute_version_es2 here. A lot of
1264 * these are redunant, but simpler to just have a (near-)exact copy here.
1265 */
1266 extensions->ARB_ES3_1_compatibility =
1267 extensions->ARB_ES3_compatibility &&
1268 extensions->ARB_arrays_of_arrays &&
1269 extensions->ARB_compute_shader &&
1270 extensions->ARB_draw_indirect &&
1271 extensions->ARB_explicit_uniform_location &&
1272 extensions->ARB_framebuffer_no_attachments &&
1273 extensions->ARB_shader_atomic_counters &&
1274 extensions->ARB_shader_image_load_store &&
1275 extensions->ARB_shader_image_size &&
1276 extensions->ARB_shader_storage_buffer_object &&
1277 extensions->ARB_shading_language_packing &&
1278 extensions->ARB_stencil_texturing &&
1279 extensions->ARB_texture_multisample &&
1280 extensions->ARB_gpu_shader5 &&
1281 extensions->EXT_shader_integer_mix;
1282
1283 extensions->OES_texture_cube_map_array =
1284 extensions->ARB_ES3_1_compatibility &&
1285 extensions->OES_geometry_shader &&
1286 extensions->ARB_texture_cube_map_array;
1287
1288 extensions->OES_viewport_array =
1289 extensions->ARB_ES3_1_compatibility &&
1290 extensions->OES_geometry_shader &&
1291 extensions->ARB_viewport_array;
1292
1293 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1294 consts->NoPrimitiveBoundingBoxOutput = true;
1295
1296 extensions->ANDROID_extension_pack_es31a =
1297 extensions->KHR_texture_compression_astc_ldr &&
1298 extensions->KHR_blend_equation_advanced &&
1299 extensions->OES_sample_variables &&
1300 extensions->ARB_shader_image_load_store &&
1301 extensions->ARB_texture_stencil8 &&
1302 extensions->ARB_texture_multisample &&
1303 extensions->OES_copy_image &&
1304 extensions->ARB_draw_buffers_blend &&
1305 extensions->OES_geometry_shader &&
1306 extensions->ARB_gpu_shader5 &&
1307 extensions->OES_primitive_bounding_box &&
1308 extensions->ARB_tessellation_shader &&
1309 extensions->ARB_texture_border_clamp &&
1310 extensions->OES_texture_buffer &&
1311 extensions->OES_texture_cube_map_array &&
1312 extensions->EXT_texture_sRGB_decode;
1313
1314 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1315 * before overall versions are selected. Also it's actually a subset of ES
1316 * 3.2, since it doesn't require ASTC or advanced blending.
1317 */
1318 extensions->ARB_ES3_2_compatibility =
1319 extensions->ARB_ES3_1_compatibility &&
1320 extensions->KHR_robustness &&
1321 extensions->ARB_copy_image &&
1322 extensions->ARB_draw_buffers_blend &&
1323 extensions->ARB_draw_elements_base_vertex &&
1324 extensions->OES_geometry_shader &&
1325 extensions->ARB_gpu_shader5 &&
1326 extensions->ARB_sample_shading &&
1327 extensions->ARB_tessellation_shader &&
1328 extensions->ARB_texture_border_clamp &&
1329 extensions->OES_texture_buffer &&
1330 extensions->ARB_texture_cube_map_array &&
1331 extensions->ARB_texture_stencil8 &&
1332 extensions->ARB_texture_multisample;
1333 }