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2beaf72b2392fed3e7965d8c09c3e0a0b68e100a
[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->EmitNoFunctions = true;
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
469
470 /**
471 * Given a member \c x of struct gl_extensions, return offset of
472 * \c x in bytes.
473 */
474 #define o(x) offsetof(struct gl_extensions, x)
475
476
477 struct st_extension_cap_mapping {
478 int extension_offset;
479 int cap;
480 };
481
482 struct st_extension_format_mapping {
483 int extension_offset[2];
484 enum pipe_format format[32];
485
486 /* If TRUE, at least one format must be supported for the extensions to be
487 * advertised. If FALSE, all the formats must be supported. */
488 GLboolean need_at_least_one;
489 };
490
491 /**
492 * Enable extensions if certain pipe formats are supported by the driver.
493 * What extensions will be enabled and what formats must be supported is
494 * described by the array of st_extension_format_mapping.
495 *
496 * target and bind_flags are passed to is_format_supported.
497 */
498 static void
499 init_format_extensions(struct pipe_screen *screen,
500 struct gl_extensions *extensions,
501 const struct st_extension_format_mapping *mapping,
502 unsigned num_mappings,
503 enum pipe_texture_target target,
504 unsigned bind_flags)
505 {
506 GLboolean *extension_table = (GLboolean *) extensions;
507 unsigned i;
508 int j;
509 int num_formats = ARRAY_SIZE(mapping->format);
510 int num_ext = ARRAY_SIZE(mapping->extension_offset);
511
512 for (i = 0; i < num_mappings; i++) {
513 int num_supported = 0;
514
515 /* Examine each format in the list. */
516 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
517 if (screen->is_format_supported(screen, mapping[i].format[j],
518 target, 0, bind_flags)) {
519 num_supported++;
520 }
521 }
522
523 if (!num_supported ||
524 (!mapping[i].need_at_least_one && num_supported != j)) {
525 continue;
526 }
527
528 /* Enable all extensions in the list. */
529 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
530 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
531 }
532 }
533
534
535 /**
536 * Given a list of formats and bind flags, return the maximum number
537 * of samples supported by any of those formats.
538 */
539 static unsigned
540 get_max_samples_for_formats(struct pipe_screen *screen,
541 unsigned num_formats,
542 enum pipe_format *formats,
543 unsigned max_samples,
544 unsigned bind)
545 {
546 unsigned i, f;
547
548 for (i = max_samples; i > 0; --i) {
549 for (f = 0; f < num_formats; f++) {
550 if (screen->is_format_supported(screen, formats[f],
551 PIPE_TEXTURE_2D, i, bind)) {
552 return i;
553 }
554 }
555 }
556 return 0;
557 }
558
559
560 /**
561 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
562 * which GL extensions are supported.
563 * Quite a few extensions are always supported because they are standard
564 * features or can be built on top of other gallium features.
565 * Some fine tuning may still be needed.
566 */
567 void st_init_extensions(struct pipe_screen *screen,
568 struct gl_constants *consts,
569 struct gl_extensions *extensions,
570 struct st_config_options *options,
571 boolean has_lib_dxtc)
572 {
573 unsigned i;
574 GLboolean *extension_table = (GLboolean *) extensions;
575
576 static const struct st_extension_cap_mapping cap_mapping[] = {
577 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
578 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
579 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
580 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
581 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
582 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
583 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
584 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
585 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
586 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
587 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
588 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
589 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
590 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
591 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
592 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
593 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
594 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
595 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
596 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
597 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
598 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
599 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
600 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
601 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
602 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
603 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
604 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
605 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
606 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
607 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
608 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
609 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
610 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
611 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
612 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
613 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
614 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
615 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
616 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
617 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
618 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
619 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
620 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
621 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
622 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
623 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
624
625 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
626
627 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
628 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
629 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
630 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
631 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
632 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
633 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
634 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
635 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
636 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
637 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
638
639 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
640 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
641 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
642 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
643 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
644 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
645 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
646 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
647 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
648 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
649 /* GL_NV_point_sprite is not supported by gallium because we don't
650 * support the GL_POINT_SPRITE_R_MODE_NV option. */
651
652 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
653 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
654 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
655 };
656
657 /* Required: render target and sampler support */
658 static const struct st_extension_format_mapping rendertarget_mapping[] = {
659 { { o(ARB_texture_float) },
660 { PIPE_FORMAT_R32G32B32A32_FLOAT,
661 PIPE_FORMAT_R16G16B16A16_FLOAT } },
662
663 { { o(OES_texture_float) },
664 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
665
666 { { o(OES_texture_half_float) },
667 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
668
669 { { o(ARB_texture_rgb10_a2ui) },
670 { PIPE_FORMAT_R10G10B10A2_UINT,
671 PIPE_FORMAT_B10G10R10A2_UINT },
672 GL_TRUE }, /* at least one format must be supported */
673
674 { { o(EXT_framebuffer_sRGB) },
675 { PIPE_FORMAT_A8B8G8R8_SRGB,
676 PIPE_FORMAT_B8G8R8A8_SRGB },
677 GL_TRUE }, /* at least one format must be supported */
678
679 { { o(EXT_packed_float) },
680 { PIPE_FORMAT_R11G11B10_FLOAT } },
681
682 { { o(EXT_texture_integer) },
683 { PIPE_FORMAT_R32G32B32A32_UINT,
684 PIPE_FORMAT_R32G32B32A32_SINT } },
685
686 { { o(ARB_texture_rg) },
687 { PIPE_FORMAT_R8_UNORM,
688 PIPE_FORMAT_R8G8_UNORM } },
689 };
690
691 /* Required: depth stencil and sampler support */
692 static const struct st_extension_format_mapping depthstencil_mapping[] = {
693 { { o(ARB_depth_buffer_float) },
694 { PIPE_FORMAT_Z32_FLOAT,
695 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
696 };
697
698 /* Required: sampler support */
699 static const struct st_extension_format_mapping texture_mapping[] = {
700 { { o(ARB_texture_compression_rgtc) },
701 { PIPE_FORMAT_RGTC1_UNORM,
702 PIPE_FORMAT_RGTC1_SNORM,
703 PIPE_FORMAT_RGTC2_UNORM,
704 PIPE_FORMAT_RGTC2_SNORM } },
705
706 { { o(EXT_texture_compression_latc) },
707 { PIPE_FORMAT_LATC1_UNORM,
708 PIPE_FORMAT_LATC1_SNORM,
709 PIPE_FORMAT_LATC2_UNORM,
710 PIPE_FORMAT_LATC2_SNORM } },
711
712 { { o(EXT_texture_compression_s3tc),
713 o(ANGLE_texture_compression_dxt) },
714 { PIPE_FORMAT_DXT1_RGB,
715 PIPE_FORMAT_DXT1_RGBA,
716 PIPE_FORMAT_DXT3_RGBA,
717 PIPE_FORMAT_DXT5_RGBA } },
718
719 { { o(ARB_texture_compression_bptc) },
720 { PIPE_FORMAT_BPTC_RGBA_UNORM,
721 PIPE_FORMAT_BPTC_SRGBA,
722 PIPE_FORMAT_BPTC_RGB_FLOAT,
723 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
724
725 { { o(KHR_texture_compression_astc_ldr) },
726 { PIPE_FORMAT_ASTC_4x4,
727 PIPE_FORMAT_ASTC_5x4,
728 PIPE_FORMAT_ASTC_5x5,
729 PIPE_FORMAT_ASTC_6x5,
730 PIPE_FORMAT_ASTC_6x6,
731 PIPE_FORMAT_ASTC_8x5,
732 PIPE_FORMAT_ASTC_8x6,
733 PIPE_FORMAT_ASTC_8x8,
734 PIPE_FORMAT_ASTC_10x5,
735 PIPE_FORMAT_ASTC_10x6,
736 PIPE_FORMAT_ASTC_10x8,
737 PIPE_FORMAT_ASTC_10x10,
738 PIPE_FORMAT_ASTC_12x10,
739 PIPE_FORMAT_ASTC_12x12,
740 PIPE_FORMAT_ASTC_4x4_SRGB,
741 PIPE_FORMAT_ASTC_5x4_SRGB,
742 PIPE_FORMAT_ASTC_5x5_SRGB,
743 PIPE_FORMAT_ASTC_6x5_SRGB,
744 PIPE_FORMAT_ASTC_6x6_SRGB,
745 PIPE_FORMAT_ASTC_8x5_SRGB,
746 PIPE_FORMAT_ASTC_8x6_SRGB,
747 PIPE_FORMAT_ASTC_8x8_SRGB,
748 PIPE_FORMAT_ASTC_10x5_SRGB,
749 PIPE_FORMAT_ASTC_10x6_SRGB,
750 PIPE_FORMAT_ASTC_10x8_SRGB,
751 PIPE_FORMAT_ASTC_10x10_SRGB,
752 PIPE_FORMAT_ASTC_12x10_SRGB,
753 PIPE_FORMAT_ASTC_12x12_SRGB } },
754
755 { { o(EXT_texture_shared_exponent) },
756 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
757
758 { { o(EXT_texture_snorm) },
759 { PIPE_FORMAT_R8G8B8A8_SNORM } },
760
761 { { o(EXT_texture_sRGB),
762 o(EXT_texture_sRGB_decode) },
763 { PIPE_FORMAT_A8B8G8R8_SRGB,
764 PIPE_FORMAT_B8G8R8A8_SRGB },
765 GL_TRUE }, /* at least one format must be supported */
766
767 { { o(ATI_texture_compression_3dc) },
768 { PIPE_FORMAT_LATC2_UNORM } },
769
770 { { o(MESA_ycbcr_texture) },
771 { PIPE_FORMAT_UYVY,
772 PIPE_FORMAT_YUYV },
773 GL_TRUE }, /* at least one format must be supported */
774
775 { { o(OES_compressed_ETC1_RGB8_texture) },
776 { PIPE_FORMAT_ETC1_RGB8,
777 PIPE_FORMAT_R8G8B8A8_UNORM },
778 GL_TRUE }, /* at least one format must be supported */
779
780 { { o(ARB_stencil_texturing),
781 o(ARB_texture_stencil8) },
782 { PIPE_FORMAT_X24S8_UINT,
783 PIPE_FORMAT_S8X24_UINT },
784 GL_TRUE }, /* at least one format must be supported */
785 };
786
787 /* Required: vertex fetch support. */
788 static const struct st_extension_format_mapping vertex_mapping[] = {
789 { { o(EXT_vertex_array_bgra) },
790 { PIPE_FORMAT_B8G8R8A8_UNORM } },
791 { { o(ARB_vertex_type_2_10_10_10_rev) },
792 { PIPE_FORMAT_R10G10B10A2_UNORM,
793 PIPE_FORMAT_B10G10R10A2_UNORM,
794 PIPE_FORMAT_R10G10B10A2_SNORM,
795 PIPE_FORMAT_B10G10R10A2_SNORM,
796 PIPE_FORMAT_R10G10B10A2_USCALED,
797 PIPE_FORMAT_B10G10R10A2_USCALED,
798 PIPE_FORMAT_R10G10B10A2_SSCALED,
799 PIPE_FORMAT_B10G10R10A2_SSCALED } },
800 { { o(ARB_vertex_type_10f_11f_11f_rev) },
801 { PIPE_FORMAT_R11G11B10_FLOAT } },
802 };
803
804 static const struct st_extension_format_mapping tbo_rgb32[] = {
805 { {o(ARB_texture_buffer_object_rgb32) },
806 { PIPE_FORMAT_R32G32B32_FLOAT,
807 PIPE_FORMAT_R32G32B32_UINT,
808 PIPE_FORMAT_R32G32B32_SINT,
809 } },
810 };
811
812 /*
813 * Extensions that are supported by all Gallium drivers:
814 */
815 extensions->ARB_ES2_compatibility = GL_TRUE;
816 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
817 extensions->ARB_explicit_attrib_location = GL_TRUE;
818 extensions->ARB_explicit_uniform_location = GL_TRUE;
819 extensions->ARB_fragment_coord_conventions = GL_TRUE;
820 extensions->ARB_fragment_program = GL_TRUE;
821 extensions->ARB_fragment_shader = GL_TRUE;
822 extensions->ARB_half_float_vertex = GL_TRUE;
823 extensions->ARB_internalformat_query = GL_TRUE;
824 extensions->ARB_internalformat_query2 = GL_TRUE;
825 extensions->ARB_map_buffer_range = GL_TRUE;
826 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
827 extensions->ARB_texture_cube_map = GL_TRUE;
828 extensions->ARB_texture_env_combine = GL_TRUE;
829 extensions->ARB_texture_env_crossbar = GL_TRUE;
830 extensions->ARB_texture_env_dot3 = GL_TRUE;
831 extensions->ARB_vertex_program = GL_TRUE;
832 extensions->ARB_vertex_shader = GL_TRUE;
833
834 extensions->EXT_blend_color = GL_TRUE;
835 extensions->EXT_blend_func_separate = GL_TRUE;
836 extensions->EXT_blend_minmax = GL_TRUE;
837 extensions->EXT_gpu_program_parameters = GL_TRUE;
838 extensions->EXT_pixel_buffer_object = GL_TRUE;
839 extensions->EXT_point_parameters = GL_TRUE;
840 extensions->EXT_provoking_vertex = GL_TRUE;
841
842 extensions->EXT_texture_env_dot3 = GL_TRUE;
843
844 extensions->ATI_fragment_shader = GL_TRUE;
845 extensions->ATI_texture_env_combine3 = GL_TRUE;
846
847 extensions->MESA_pack_invert = GL_TRUE;
848
849 extensions->NV_fog_distance = GL_TRUE;
850 extensions->NV_texture_env_combine4 = GL_TRUE;
851 extensions->NV_texture_rectangle = GL_TRUE;
852
853 extensions->OES_EGL_image = GL_TRUE;
854 extensions->OES_EGL_image_external = GL_TRUE;
855 extensions->OES_draw_texture = GL_TRUE;
856
857 /* Expose the extensions which directly correspond to gallium caps. */
858 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
859 if (screen->get_param(screen, cap_mapping[i].cap)) {
860 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
861 }
862 }
863
864 /* Expose the extensions which directly correspond to gallium formats. */
865 init_format_extensions(screen, extensions, rendertarget_mapping,
866 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
867 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
868 init_format_extensions(screen, extensions, depthstencil_mapping,
869 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
870 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
871 init_format_extensions(screen, extensions, texture_mapping,
872 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
873 PIPE_BIND_SAMPLER_VIEW);
874 init_format_extensions(screen, extensions, vertex_mapping,
875 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
876 PIPE_BIND_VERTEX_BUFFER);
877
878 /* Figure out GLSL support and set GLSLVersion to it. */
879 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
880
881 _mesa_override_glsl_version(consts);
882
883 if (options->force_glsl_version > 0 &&
884 options->force_glsl_version <= consts->GLSLVersion) {
885 consts->ForceGLSLVersion = options->force_glsl_version;
886 }
887
888 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
889
890 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
891
892 consts->dri_config_options_sha1 = options->config_options_sha1;
893
894 if (consts->GLSLVersion >= 400)
895 extensions->ARB_gpu_shader5 = GL_TRUE;
896 if (consts->GLSLVersion >= 410)
897 extensions->ARB_shader_precision = GL_TRUE;
898
899 /* This extension needs full OpenGL 3.2, but we don't know if that's
900 * supported at this point. Only check the GLSL version. */
901 if (consts->GLSLVersion >= 150 &&
902 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
903 extensions->AMD_vertex_shader_layer = GL_TRUE;
904 }
905
906 if (consts->GLSLVersion >= 140) {
907 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS) &&
908 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
909 PIPE_SHADER_CAP_PREFERRED_IR) == PIPE_SHADER_IR_TGSI)
910 extensions->ARB_enhanced_layouts = GL_TRUE;
911 }
912
913 if (consts->GLSLVersion >= 130) {
914 consts->NativeIntegers = GL_TRUE;
915 consts->MaxClipPlanes = 8;
916
917 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
918 consts->VertexID_is_zero_based = GL_TRUE;
919 }
920
921 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
922 extensions->ARB_conservative_depth = GL_TRUE;
923 extensions->ARB_shading_language_packing = GL_TRUE;
924 extensions->OES_depth_texture_cube_map = GL_TRUE;
925 extensions->ARB_shading_language_420pack = GL_TRUE;
926 extensions->ARB_texture_query_levels = GL_TRUE;
927 extensions->ARB_shader_subroutine = GL_TRUE;
928
929 if (!options->disable_shader_bit_encoding) {
930 extensions->ARB_shader_bit_encoding = GL_TRUE;
931 }
932
933 extensions->EXT_shader_integer_mix = GL_TRUE;
934 extensions->ARB_arrays_of_arrays = GL_TRUE;
935 extensions->MESA_shader_integer_functions = GL_TRUE;
936 } else {
937 /* Optional integer support for GLSL 1.2. */
938 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
939 PIPE_SHADER_CAP_INTEGERS) &&
940 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
941 PIPE_SHADER_CAP_INTEGERS)) {
942 consts->NativeIntegers = GL_TRUE;
943
944 extensions->EXT_shader_integer_mix = GL_TRUE;
945 }
946
947 /* Integer textures make no sense before GLSL 1.30 */
948 extensions->EXT_texture_integer = GL_FALSE;
949 }
950
951 consts->GLSLZeroInit = options->glsl_zero_init;
952
953 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
954
955 /* Below are the cases which cannot be moved into tables easily. */
956
957 if (!has_lib_dxtc && !options->force_s3tc_enable) {
958 extensions->EXT_texture_compression_s3tc = GL_FALSE;
959 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
960 }
961
962 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
963 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
964 extensions->ARB_tessellation_shader = GL_TRUE;
965 }
966
967 /* What this is really checking for is the ability to support multiple
968 * invocations of a geometry shader. There is no separate cap for that, so
969 * we check the GLSLVersion.
970 */
971 if (consts->GLSLVersion >= 400 &&
972 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
973 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
974 extensions->OES_geometry_shader = GL_TRUE;
975 }
976
977 if (screen->fence_finish) {
978 extensions->ARB_sync = GL_TRUE;
979 }
980
981 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
982 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
983 */
984 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
985 extensions->ARB_gpu_shader5;
986
987 /* Maximum sample count. */
988 {
989 enum pipe_format color_formats[] = {
990 PIPE_FORMAT_R8G8B8A8_UNORM,
991 PIPE_FORMAT_B8G8R8A8_UNORM,
992 PIPE_FORMAT_A8R8G8B8_UNORM,
993 PIPE_FORMAT_A8B8G8R8_UNORM,
994 };
995 enum pipe_format depth_formats[] = {
996 PIPE_FORMAT_Z16_UNORM,
997 PIPE_FORMAT_Z24X8_UNORM,
998 PIPE_FORMAT_X8Z24_UNORM,
999 PIPE_FORMAT_Z32_UNORM,
1000 PIPE_FORMAT_Z32_FLOAT
1001 };
1002 enum pipe_format int_formats[] = {
1003 PIPE_FORMAT_R8G8B8A8_SINT
1004 };
1005 enum pipe_format void_formats[] = {
1006 PIPE_FORMAT_NONE
1007 };
1008
1009 consts->MaxSamples =
1010 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1011 color_formats, 16,
1012 PIPE_BIND_RENDER_TARGET);
1013
1014 consts->MaxImageSamples =
1015 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1016 color_formats, 16,
1017 PIPE_BIND_SHADER_IMAGE);
1018
1019 consts->MaxColorTextureSamples =
1020 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1021 color_formats, consts->MaxSamples,
1022 PIPE_BIND_SAMPLER_VIEW);
1023
1024 consts->MaxDepthTextureSamples =
1025 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1026 depth_formats, consts->MaxSamples,
1027 PIPE_BIND_SAMPLER_VIEW);
1028
1029 consts->MaxIntegerSamples =
1030 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1031 int_formats, consts->MaxSamples,
1032 PIPE_BIND_SAMPLER_VIEW);
1033
1034 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1035 consts->MaxFramebufferSamples =
1036 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1037 void_formats, 32,
1038 PIPE_BIND_RENDER_TARGET);
1039 }
1040 if (consts->MaxSamples == 1) {
1041 /* one sample doesn't really make sense */
1042 consts->MaxSamples = 0;
1043 }
1044 else if (consts->MaxSamples >= 2) {
1045 extensions->EXT_framebuffer_multisample = GL_TRUE;
1046 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1047 }
1048
1049 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1050 consts->FakeSWMSAA = GL_TRUE;
1051 extensions->EXT_framebuffer_multisample = GL_TRUE;
1052 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1053 extensions->ARB_texture_multisample = GL_TRUE;
1054 }
1055
1056 if (consts->MaxDualSourceDrawBuffers > 0 &&
1057 !options->disable_blend_func_extended)
1058 extensions->ARB_blend_func_extended = GL_TRUE;
1059
1060 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1061 extensions->ARB_timer_query) {
1062 extensions->EXT_timer_query = GL_TRUE;
1063 }
1064
1065 if (extensions->ARB_transform_feedback2 &&
1066 extensions->ARB_draw_instanced) {
1067 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1068 }
1069 if (options->force_glsl_extensions_warn)
1070 consts->ForceGLSLExtensionsWarn = 1;
1071
1072 if (options->disable_glsl_line_continuations)
1073 consts->DisableGLSLLineContinuations = 1;
1074
1075 if (options->allow_glsl_extension_directive_midshader)
1076 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1077
1078 consts->MinMapBufferAlignment =
1079 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1080
1081 if (extensions->ARB_texture_buffer_object) {
1082 consts->MaxTextureBufferSize =
1083 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1084 (1u << 31) - 1);
1085 consts->TextureBufferOffsetAlignment =
1086 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1087
1088 if (consts->TextureBufferOffsetAlignment)
1089 extensions->ARB_texture_buffer_range = GL_TRUE;
1090
1091 init_format_extensions(screen, extensions, tbo_rgb32,
1092 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1093 PIPE_BIND_SAMPLER_VIEW);
1094 }
1095
1096 extensions->OES_texture_buffer =
1097 extensions->ARB_texture_buffer_object &&
1098 extensions->ARB_texture_buffer_range &&
1099 extensions->ARB_texture_buffer_object_rgb32 &&
1100 extensions->ARB_shader_image_load_store;
1101
1102 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1103 * If the number of available texture indirections is very limited, then we
1104 * prefer to disable varying packing rather than run the risk of varying
1105 * packing preventing a shader from running.
1106 */
1107 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1108 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1109 /* We can't disable varying packing if transform feedback is available,
1110 * because transform feedback code assumes a packed varying layout.
1111 */
1112 if (!extensions->EXT_transform_feedback)
1113 consts->DisableVaryingPacking = GL_TRUE;
1114 }
1115
1116 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1117 if (consts->MaxViewports >= 16) {
1118 if (consts->GLSLVersion >= 400) {
1119 consts->ViewportBounds.Min = -32768.0;
1120 consts->ViewportBounds.Max = 32767.0;
1121 } else {
1122 consts->ViewportBounds.Min = -16384.0;
1123 consts->ViewportBounds.Max = 16383.0;
1124 }
1125 extensions->ARB_viewport_array = GL_TRUE;
1126 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1127 if (extensions->AMD_vertex_shader_layer)
1128 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1129 }
1130
1131 /* ARB_framebuffer_no_attachments */
1132 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1133 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1134 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1135 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1136 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1137
1138 /* GL_ARB_ES3_compatibility.
1139 *
1140 * Assume that ES3 is supported if GLSL 3.30 is supported.
1141 * (OpenGL 3.3 is a requirement for that extension.)
1142 */
1143 if (consts->GLSLVersion >= 330 &&
1144 /* Requirements for ETC2 emulation. */
1145 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1146 PIPE_TEXTURE_2D, 0,
1147 PIPE_BIND_SAMPLER_VIEW) &&
1148 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1149 PIPE_TEXTURE_2D, 0,
1150 PIPE_BIND_SAMPLER_VIEW) &&
1151 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1152 PIPE_TEXTURE_2D, 0,
1153 PIPE_BIND_SAMPLER_VIEW) &&
1154 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1155 PIPE_TEXTURE_2D, 0,
1156 PIPE_BIND_SAMPLER_VIEW) &&
1157 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1158 PIPE_TEXTURE_2D, 0,
1159 PIPE_BIND_SAMPLER_VIEW) &&
1160 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1161 PIPE_TEXTURE_2D, 0,
1162 PIPE_BIND_SAMPLER_VIEW)) {
1163 extensions->ARB_ES3_compatibility = GL_TRUE;
1164 }
1165
1166 #ifdef HAVE_ST_VDPAU
1167 if (screen->get_video_param &&
1168 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1169 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1170 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1171 extensions->NV_vdpau_interop = GL_TRUE;
1172 }
1173 #endif
1174
1175 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1176 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1177 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1178 }
1179
1180 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1181 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1182 extensions->GREMEDY_string_marker = GL_TRUE;
1183
1184 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1185 int compute_supported_irs =
1186 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1187 PIPE_SHADER_CAP_SUPPORTED_IRS);
1188 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1189 uint64_t grid_size[3], block_size[3];
1190 uint64_t max_local_size, max_threads_per_block;
1191
1192 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1193 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1194 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1195 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1196 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1197 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1198 &max_threads_per_block);
1199 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1200 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1201 &max_local_size);
1202
1203 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1204 consts->MaxComputeSharedMemorySize = max_local_size;
1205
1206 for (i = 0; i < 3; i++) {
1207 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1208 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1209 }
1210
1211 extensions->ARB_compute_shader =
1212 extensions->ARB_shader_image_load_store &&
1213 extensions->ARB_shader_atomic_counters;
1214
1215 if (extensions->ARB_compute_shader) {
1216 uint64_t max_variable_threads_per_block = 0;
1217
1218 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1219 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1220 &max_variable_threads_per_block);
1221
1222 for (i = 0; i < 3; i++) {
1223 /* Clamp the values to avoid having a local work group size
1224 * greater than the maximum number of invocations.
1225 */
1226 consts->MaxComputeVariableGroupSize[i] =
1227 MIN2(consts->MaxComputeWorkGroupSize[i],
1228 max_variable_threads_per_block);
1229 }
1230 consts->MaxComputeVariableGroupInvocations =
1231 max_variable_threads_per_block;
1232
1233 extensions->ARB_compute_variable_group_size =
1234 max_variable_threads_per_block > 0;
1235 }
1236 }
1237 }
1238
1239 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1240
1241 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1242 * there's no clean way of telling whether we would support ES 3.1 from
1243 * here, so copy the condition from compute_version_es2 here. A lot of
1244 * these are redunant, but simpler to just have a (near-)exact copy here.
1245 */
1246 extensions->ARB_ES3_1_compatibility =
1247 extensions->ARB_ES3_compatibility &&
1248 extensions->ARB_arrays_of_arrays &&
1249 extensions->ARB_compute_shader &&
1250 extensions->ARB_draw_indirect &&
1251 extensions->ARB_explicit_uniform_location &&
1252 extensions->ARB_framebuffer_no_attachments &&
1253 extensions->ARB_shader_atomic_counters &&
1254 extensions->ARB_shader_image_load_store &&
1255 extensions->ARB_shader_image_size &&
1256 extensions->ARB_shader_storage_buffer_object &&
1257 extensions->ARB_shading_language_packing &&
1258 extensions->ARB_stencil_texturing &&
1259 extensions->ARB_texture_multisample &&
1260 extensions->ARB_gpu_shader5 &&
1261 extensions->EXT_shader_integer_mix;
1262
1263 extensions->OES_texture_cube_map_array =
1264 extensions->ARB_ES3_1_compatibility &&
1265 extensions->OES_geometry_shader &&
1266 extensions->ARB_texture_cube_map_array;
1267
1268 extensions->OES_viewport_array =
1269 extensions->ARB_ES3_1_compatibility &&
1270 extensions->OES_geometry_shader &&
1271 extensions->ARB_viewport_array;
1272
1273 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1274 consts->NoPrimitiveBoundingBoxOutput = true;
1275
1276 extensions->ANDROID_extension_pack_es31a =
1277 extensions->KHR_texture_compression_astc_ldr &&
1278 extensions->KHR_blend_equation_advanced &&
1279 extensions->OES_sample_variables &&
1280 extensions->ARB_shader_image_load_store &&
1281 extensions->ARB_texture_stencil8 &&
1282 extensions->ARB_texture_multisample &&
1283 extensions->OES_copy_image &&
1284 extensions->ARB_draw_buffers_blend &&
1285 extensions->OES_geometry_shader &&
1286 extensions->ARB_gpu_shader5 &&
1287 extensions->OES_primitive_bounding_box &&
1288 extensions->ARB_tessellation_shader &&
1289 extensions->ARB_texture_border_clamp &&
1290 extensions->OES_texture_buffer &&
1291 extensions->OES_texture_cube_map_array &&
1292 extensions->EXT_texture_sRGB_decode;
1293
1294 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1295 * before overall versions are selected. Also it's actually a subset of ES
1296 * 3.2, since it doesn't require ASTC or advanced blending.
1297 */
1298 extensions->ARB_ES3_2_compatibility =
1299 extensions->ARB_ES3_1_compatibility &&
1300 extensions->KHR_robustness &&
1301 extensions->ARB_copy_image &&
1302 extensions->ARB_draw_buffers_blend &&
1303 extensions->ARB_draw_elements_base_vertex &&
1304 extensions->OES_geometry_shader &&
1305 extensions->ARB_gpu_shader5 &&
1306 extensions->ARB_sample_shading &&
1307 extensions->ARB_tessellation_shader &&
1308 extensions->ARB_texture_border_clamp &&
1309 extensions->OES_texture_buffer &&
1310 extensions->ARB_texture_cube_map_array &&
1311 extensions->ARB_texture_stencil8 &&
1312 extensions->ARB_texture_multisample;
1313 }