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st/mesa: Add support for ARB_post_depth_coverage
[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
471
472 /**
473 * Given a member \c x of struct gl_extensions, return offset of
474 * \c x in bytes.
475 */
476 #define o(x) offsetof(struct gl_extensions, x)
477
478
479 struct st_extension_cap_mapping {
480 int extension_offset;
481 int cap;
482 };
483
484 struct st_extension_format_mapping {
485 int extension_offset[2];
486 enum pipe_format format[32];
487
488 /* If TRUE, at least one format must be supported for the extensions to be
489 * advertised. If FALSE, all the formats must be supported. */
490 GLboolean need_at_least_one;
491 };
492
493 /**
494 * Enable extensions if certain pipe formats are supported by the driver.
495 * What extensions will be enabled and what formats must be supported is
496 * described by the array of st_extension_format_mapping.
497 *
498 * target and bind_flags are passed to is_format_supported.
499 */
500 static void
501 init_format_extensions(struct pipe_screen *screen,
502 struct gl_extensions *extensions,
503 const struct st_extension_format_mapping *mapping,
504 unsigned num_mappings,
505 enum pipe_texture_target target,
506 unsigned bind_flags)
507 {
508 GLboolean *extension_table = (GLboolean *) extensions;
509 unsigned i;
510 int j;
511 int num_formats = ARRAY_SIZE(mapping->format);
512 int num_ext = ARRAY_SIZE(mapping->extension_offset);
513
514 for (i = 0; i < num_mappings; i++) {
515 int num_supported = 0;
516
517 /* Examine each format in the list. */
518 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
519 if (screen->is_format_supported(screen, mapping[i].format[j],
520 target, 0, bind_flags)) {
521 num_supported++;
522 }
523 }
524
525 if (!num_supported ||
526 (!mapping[i].need_at_least_one && num_supported != j)) {
527 continue;
528 }
529
530 /* Enable all extensions in the list. */
531 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
532 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
533 }
534 }
535
536
537 /**
538 * Given a list of formats and bind flags, return the maximum number
539 * of samples supported by any of those formats.
540 */
541 static unsigned
542 get_max_samples_for_formats(struct pipe_screen *screen,
543 unsigned num_formats,
544 enum pipe_format *formats,
545 unsigned max_samples,
546 unsigned bind)
547 {
548 unsigned i, f;
549
550 for (i = max_samples; i > 0; --i) {
551 for (f = 0; f < num_formats; f++) {
552 if (screen->is_format_supported(screen, formats[f],
553 PIPE_TEXTURE_2D, i, bind)) {
554 return i;
555 }
556 }
557 }
558 return 0;
559 }
560
561
562 /**
563 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
564 * which GL extensions are supported.
565 * Quite a few extensions are always supported because they are standard
566 * features or can be built on top of other gallium features.
567 * Some fine tuning may still be needed.
568 */
569 void st_init_extensions(struct pipe_screen *screen,
570 struct gl_constants *consts,
571 struct gl_extensions *extensions,
572 struct st_config_options *options,
573 boolean has_lib_dxtc)
574 {
575 unsigned i;
576 GLboolean *extension_table = (GLboolean *) extensions;
577
578 static const struct st_extension_cap_mapping cap_mapping[] = {
579 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
580 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
581 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
582 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
583 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
584 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
585 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
586 { o(OES_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
587 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
588 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
589 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
590 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
591 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
592 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
593 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
594 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
595 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
596 { o(ARB_gpu_shader_int64), PIPE_CAP_INT64 },
597 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
598 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
599 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
600 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
601 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
602 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
603 { o(ARB_post_depth_coverage), PIPE_CAP_POST_DEPTH_COVERAGE },
604 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
605 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
606 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
607 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
608 { o(ARB_shader_ballot), PIPE_CAP_TGSI_BALLOT },
609 { o(ARB_shader_clock), PIPE_CAP_TGSI_CLOCK },
610 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
611 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
612 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
613 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
614 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
615 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
616 { o(ARB_sparse_buffer), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE },
617 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
618 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
619 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
620 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
621 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
622 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
623 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
624 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
625 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
626 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
627 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
628
629 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
630
631 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
632 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
633 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
634 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
635 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
636 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
637 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
638 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
639 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
640 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
641 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
642
643 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
644 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
645 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
646 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
647 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
648 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
649 { o(NV_fill_rectangle), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE },
650 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
651 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
652 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
653 /* GL_NV_point_sprite is not supported by gallium because we don't
654 * support the GL_POINT_SPRITE_R_MODE_NV option. */
655
656 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
657 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
658 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
659 };
660
661 /* Required: render target and sampler support */
662 static const struct st_extension_format_mapping rendertarget_mapping[] = {
663 { { o(ARB_texture_float) },
664 { PIPE_FORMAT_R32G32B32A32_FLOAT,
665 PIPE_FORMAT_R16G16B16A16_FLOAT } },
666
667 { { o(OES_texture_float) },
668 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
669
670 { { o(OES_texture_half_float) },
671 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
672
673 { { o(ARB_texture_rgb10_a2ui) },
674 { PIPE_FORMAT_R10G10B10A2_UINT,
675 PIPE_FORMAT_B10G10R10A2_UINT },
676 GL_TRUE }, /* at least one format must be supported */
677
678 { { o(EXT_framebuffer_sRGB) },
679 { PIPE_FORMAT_A8B8G8R8_SRGB,
680 PIPE_FORMAT_B8G8R8A8_SRGB },
681 GL_TRUE }, /* at least one format must be supported */
682
683 { { o(EXT_packed_float) },
684 { PIPE_FORMAT_R11G11B10_FLOAT } },
685
686 { { o(EXT_texture_integer) },
687 { PIPE_FORMAT_R32G32B32A32_UINT,
688 PIPE_FORMAT_R32G32B32A32_SINT } },
689
690 { { o(ARB_texture_rg) },
691 { PIPE_FORMAT_R8_UNORM,
692 PIPE_FORMAT_R8G8_UNORM } },
693 };
694
695 /* Required: depth stencil and sampler support */
696 static const struct st_extension_format_mapping depthstencil_mapping[] = {
697 { { o(ARB_depth_buffer_float) },
698 { PIPE_FORMAT_Z32_FLOAT,
699 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
700 };
701
702 /* Required: sampler support */
703 static const struct st_extension_format_mapping texture_mapping[] = {
704 { { o(ARB_texture_compression_rgtc) },
705 { PIPE_FORMAT_RGTC1_UNORM,
706 PIPE_FORMAT_RGTC1_SNORM,
707 PIPE_FORMAT_RGTC2_UNORM,
708 PIPE_FORMAT_RGTC2_SNORM } },
709
710 { { o(EXT_texture_compression_latc) },
711 { PIPE_FORMAT_LATC1_UNORM,
712 PIPE_FORMAT_LATC1_SNORM,
713 PIPE_FORMAT_LATC2_UNORM,
714 PIPE_FORMAT_LATC2_SNORM } },
715
716 { { o(EXT_texture_compression_s3tc),
717 o(ANGLE_texture_compression_dxt) },
718 { PIPE_FORMAT_DXT1_RGB,
719 PIPE_FORMAT_DXT1_RGBA,
720 PIPE_FORMAT_DXT3_RGBA,
721 PIPE_FORMAT_DXT5_RGBA } },
722
723 { { o(ARB_texture_compression_bptc) },
724 { PIPE_FORMAT_BPTC_RGBA_UNORM,
725 PIPE_FORMAT_BPTC_SRGBA,
726 PIPE_FORMAT_BPTC_RGB_FLOAT,
727 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
728
729 { { o(KHR_texture_compression_astc_ldr) },
730 { PIPE_FORMAT_ASTC_4x4,
731 PIPE_FORMAT_ASTC_5x4,
732 PIPE_FORMAT_ASTC_5x5,
733 PIPE_FORMAT_ASTC_6x5,
734 PIPE_FORMAT_ASTC_6x6,
735 PIPE_FORMAT_ASTC_8x5,
736 PIPE_FORMAT_ASTC_8x6,
737 PIPE_FORMAT_ASTC_8x8,
738 PIPE_FORMAT_ASTC_10x5,
739 PIPE_FORMAT_ASTC_10x6,
740 PIPE_FORMAT_ASTC_10x8,
741 PIPE_FORMAT_ASTC_10x10,
742 PIPE_FORMAT_ASTC_12x10,
743 PIPE_FORMAT_ASTC_12x12,
744 PIPE_FORMAT_ASTC_4x4_SRGB,
745 PIPE_FORMAT_ASTC_5x4_SRGB,
746 PIPE_FORMAT_ASTC_5x5_SRGB,
747 PIPE_FORMAT_ASTC_6x5_SRGB,
748 PIPE_FORMAT_ASTC_6x6_SRGB,
749 PIPE_FORMAT_ASTC_8x5_SRGB,
750 PIPE_FORMAT_ASTC_8x6_SRGB,
751 PIPE_FORMAT_ASTC_8x8_SRGB,
752 PIPE_FORMAT_ASTC_10x5_SRGB,
753 PIPE_FORMAT_ASTC_10x6_SRGB,
754 PIPE_FORMAT_ASTC_10x8_SRGB,
755 PIPE_FORMAT_ASTC_10x10_SRGB,
756 PIPE_FORMAT_ASTC_12x10_SRGB,
757 PIPE_FORMAT_ASTC_12x12_SRGB } },
758
759 { { o(EXT_texture_shared_exponent) },
760 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
761
762 { { o(EXT_texture_snorm) },
763 { PIPE_FORMAT_R8G8B8A8_SNORM } },
764
765 { { o(EXT_texture_sRGB),
766 o(EXT_texture_sRGB_decode) },
767 { PIPE_FORMAT_A8B8G8R8_SRGB,
768 PIPE_FORMAT_B8G8R8A8_SRGB },
769 GL_TRUE }, /* at least one format must be supported */
770
771 { { o(ATI_texture_compression_3dc) },
772 { PIPE_FORMAT_LATC2_UNORM } },
773
774 { { o(MESA_ycbcr_texture) },
775 { PIPE_FORMAT_UYVY,
776 PIPE_FORMAT_YUYV },
777 GL_TRUE }, /* at least one format must be supported */
778
779 { { o(OES_compressed_ETC1_RGB8_texture) },
780 { PIPE_FORMAT_ETC1_RGB8,
781 PIPE_FORMAT_R8G8B8A8_UNORM },
782 GL_TRUE }, /* at least one format must be supported */
783
784 { { o(ARB_stencil_texturing),
785 o(ARB_texture_stencil8) },
786 { PIPE_FORMAT_X24S8_UINT,
787 PIPE_FORMAT_S8X24_UINT },
788 GL_TRUE }, /* at least one format must be supported */
789 };
790
791 /* Required: vertex fetch support. */
792 static const struct st_extension_format_mapping vertex_mapping[] = {
793 { { o(EXT_vertex_array_bgra) },
794 { PIPE_FORMAT_B8G8R8A8_UNORM } },
795 { { o(ARB_vertex_type_2_10_10_10_rev) },
796 { PIPE_FORMAT_R10G10B10A2_UNORM,
797 PIPE_FORMAT_B10G10R10A2_UNORM,
798 PIPE_FORMAT_R10G10B10A2_SNORM,
799 PIPE_FORMAT_B10G10R10A2_SNORM,
800 PIPE_FORMAT_R10G10B10A2_USCALED,
801 PIPE_FORMAT_B10G10R10A2_USCALED,
802 PIPE_FORMAT_R10G10B10A2_SSCALED,
803 PIPE_FORMAT_B10G10R10A2_SSCALED } },
804 { { o(ARB_vertex_type_10f_11f_11f_rev) },
805 { PIPE_FORMAT_R11G11B10_FLOAT } },
806 };
807
808 static const struct st_extension_format_mapping tbo_rgb32[] = {
809 { {o(ARB_texture_buffer_object_rgb32) },
810 { PIPE_FORMAT_R32G32B32_FLOAT,
811 PIPE_FORMAT_R32G32B32_UINT,
812 PIPE_FORMAT_R32G32B32_SINT,
813 } },
814 };
815
816 /*
817 * Extensions that are supported by all Gallium drivers:
818 */
819 extensions->ARB_ES2_compatibility = GL_TRUE;
820 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
821 extensions->ARB_explicit_attrib_location = GL_TRUE;
822 extensions->ARB_explicit_uniform_location = GL_TRUE;
823 extensions->ARB_fragment_coord_conventions = GL_TRUE;
824 extensions->ARB_fragment_program = GL_TRUE;
825 extensions->ARB_fragment_shader = GL_TRUE;
826 extensions->ARB_half_float_vertex = GL_TRUE;
827 extensions->ARB_internalformat_query = GL_TRUE;
828 extensions->ARB_internalformat_query2 = GL_TRUE;
829 extensions->ARB_map_buffer_range = GL_TRUE;
830 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
831 extensions->ARB_texture_cube_map = GL_TRUE;
832 extensions->ARB_texture_env_combine = GL_TRUE;
833 extensions->ARB_texture_env_crossbar = GL_TRUE;
834 extensions->ARB_texture_env_dot3 = GL_TRUE;
835 extensions->ARB_vertex_program = GL_TRUE;
836 extensions->ARB_vertex_shader = GL_TRUE;
837
838 extensions->EXT_blend_color = GL_TRUE;
839 extensions->EXT_blend_func_separate = GL_TRUE;
840 extensions->EXT_blend_minmax = GL_TRUE;
841 extensions->EXT_gpu_program_parameters = GL_TRUE;
842 extensions->EXT_pixel_buffer_object = GL_TRUE;
843 extensions->EXT_point_parameters = GL_TRUE;
844 extensions->EXT_provoking_vertex = GL_TRUE;
845
846 extensions->EXT_texture_env_dot3 = GL_TRUE;
847
848 extensions->ATI_fragment_shader = GL_TRUE;
849 extensions->ATI_texture_env_combine3 = GL_TRUE;
850
851 extensions->MESA_pack_invert = GL_TRUE;
852
853 extensions->NV_fog_distance = GL_TRUE;
854 extensions->NV_texture_env_combine4 = GL_TRUE;
855 extensions->NV_texture_rectangle = GL_TRUE;
856
857 extensions->OES_EGL_image = GL_TRUE;
858 extensions->OES_EGL_image_external = GL_TRUE;
859 extensions->OES_draw_texture = GL_TRUE;
860
861 /* Expose the extensions which directly correspond to gallium caps. */
862 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
863 if (screen->get_param(screen, cap_mapping[i].cap)) {
864 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
865 }
866 }
867
868 /* Expose the extensions which directly correspond to gallium formats. */
869 init_format_extensions(screen, extensions, rendertarget_mapping,
870 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
871 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
872 init_format_extensions(screen, extensions, depthstencil_mapping,
873 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
874 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
875 init_format_extensions(screen, extensions, texture_mapping,
876 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
877 PIPE_BIND_SAMPLER_VIEW);
878 init_format_extensions(screen, extensions, vertex_mapping,
879 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
880 PIPE_BIND_VERTEX_BUFFER);
881
882 /* Figure out GLSL support and set GLSLVersion to it. */
883 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
884
885 _mesa_override_glsl_version(consts);
886
887 if (options->force_glsl_version > 0 &&
888 options->force_glsl_version <= consts->GLSLVersion) {
889 consts->ForceGLSLVersion = options->force_glsl_version;
890 }
891
892 consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
893
894 consts->ForceGLSLAbsSqrt = options->force_glsl_abs_sqrt;
895
896 consts->AllowGLSLBuiltinVariableRedeclaration = options->allow_glsl_builtin_variable_redeclaration;
897
898 consts->dri_config_options_sha1 = options->config_options_sha1;
899
900 if (consts->GLSLVersion >= 400)
901 extensions->ARB_gpu_shader5 = GL_TRUE;
902 if (consts->GLSLVersion >= 410)
903 extensions->ARB_shader_precision = GL_TRUE;
904
905 /* This extension needs full OpenGL 3.2, but we don't know if that's
906 * supported at this point. Only check the GLSL version. */
907 if (consts->GLSLVersion >= 150 &&
908 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
909 extensions->AMD_vertex_shader_layer = GL_TRUE;
910 }
911
912 if (consts->GLSLVersion >= 140) {
913 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS) &&
914 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
915 PIPE_SHADER_CAP_PREFERRED_IR) == PIPE_SHADER_IR_TGSI)
916 extensions->ARB_enhanced_layouts = GL_TRUE;
917 }
918
919 if (consts->GLSLVersion >= 130) {
920 consts->NativeIntegers = GL_TRUE;
921 consts->MaxClipPlanes = 8;
922
923 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
924 consts->VertexID_is_zero_based = GL_TRUE;
925 }
926
927 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
928 extensions->ARB_conservative_depth = GL_TRUE;
929 extensions->ARB_shading_language_packing = GL_TRUE;
930 extensions->OES_depth_texture_cube_map = GL_TRUE;
931 extensions->ARB_shading_language_420pack = GL_TRUE;
932 extensions->ARB_texture_query_levels = GL_TRUE;
933
934 if (!options->disable_shader_bit_encoding) {
935 extensions->ARB_shader_bit_encoding = GL_TRUE;
936 }
937
938 extensions->EXT_shader_integer_mix = GL_TRUE;
939 extensions->ARB_arrays_of_arrays = GL_TRUE;
940 extensions->MESA_shader_integer_functions = GL_TRUE;
941 } else {
942 /* Optional integer support for GLSL 1.2. */
943 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
944 PIPE_SHADER_CAP_INTEGERS) &&
945 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
946 PIPE_SHADER_CAP_INTEGERS)) {
947 consts->NativeIntegers = GL_TRUE;
948
949 extensions->EXT_shader_integer_mix = GL_TRUE;
950 }
951
952 /* Integer textures make no sense before GLSL 1.30 */
953 extensions->EXT_texture_integer = GL_FALSE;
954 }
955
956 consts->GLSLZeroInit = options->glsl_zero_init;
957
958 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
959
960 /* Below are the cases which cannot be moved into tables easily. */
961
962 if (!has_lib_dxtc && !options->force_s3tc_enable) {
963 extensions->EXT_texture_compression_s3tc = GL_FALSE;
964 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
965 }
966
967 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
968 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
969 extensions->ARB_tessellation_shader = GL_TRUE;
970 }
971
972 /* What this is really checking for is the ability to support multiple
973 * invocations of a geometry shader. There is no separate cap for that, so
974 * we check the GLSLVersion.
975 */
976 if (consts->GLSLVersion >= 400 &&
977 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
978 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
979 extensions->OES_geometry_shader = GL_TRUE;
980 }
981
982 if (screen->fence_finish) {
983 extensions->ARB_sync = GL_TRUE;
984 }
985
986 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
987 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
988 */
989 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
990 extensions->ARB_gpu_shader5;
991
992 /* Maximum sample count. */
993 {
994 enum pipe_format color_formats[] = {
995 PIPE_FORMAT_R8G8B8A8_UNORM,
996 PIPE_FORMAT_B8G8R8A8_UNORM,
997 PIPE_FORMAT_A8R8G8B8_UNORM,
998 PIPE_FORMAT_A8B8G8R8_UNORM,
999 };
1000 enum pipe_format depth_formats[] = {
1001 PIPE_FORMAT_Z16_UNORM,
1002 PIPE_FORMAT_Z24X8_UNORM,
1003 PIPE_FORMAT_X8Z24_UNORM,
1004 PIPE_FORMAT_Z32_UNORM,
1005 PIPE_FORMAT_Z32_FLOAT
1006 };
1007 enum pipe_format int_formats[] = {
1008 PIPE_FORMAT_R8G8B8A8_SINT
1009 };
1010 enum pipe_format void_formats[] = {
1011 PIPE_FORMAT_NONE
1012 };
1013
1014 consts->MaxSamples =
1015 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1016 color_formats, 16,
1017 PIPE_BIND_RENDER_TARGET);
1018
1019 consts->MaxImageSamples =
1020 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1021 color_formats, 16,
1022 PIPE_BIND_SHADER_IMAGE);
1023
1024 consts->MaxColorTextureSamples =
1025 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1026 color_formats, consts->MaxSamples,
1027 PIPE_BIND_SAMPLER_VIEW);
1028
1029 consts->MaxDepthTextureSamples =
1030 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1031 depth_formats, consts->MaxSamples,
1032 PIPE_BIND_SAMPLER_VIEW);
1033
1034 consts->MaxIntegerSamples =
1035 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1036 int_formats, consts->MaxSamples,
1037 PIPE_BIND_SAMPLER_VIEW);
1038
1039 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1040 consts->MaxFramebufferSamples =
1041 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1042 void_formats, 32,
1043 PIPE_BIND_RENDER_TARGET);
1044 }
1045 if (consts->MaxSamples == 1) {
1046 /* one sample doesn't really make sense */
1047 consts->MaxSamples = 0;
1048 }
1049 else if (consts->MaxSamples >= 2) {
1050 extensions->EXT_framebuffer_multisample = GL_TRUE;
1051 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1052 }
1053
1054 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1055 consts->FakeSWMSAA = GL_TRUE;
1056 extensions->EXT_framebuffer_multisample = GL_TRUE;
1057 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1058 extensions->ARB_texture_multisample = GL_TRUE;
1059 }
1060
1061 if (consts->MaxDualSourceDrawBuffers > 0 &&
1062 !options->disable_blend_func_extended)
1063 extensions->ARB_blend_func_extended = GL_TRUE;
1064
1065 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1066 extensions->ARB_timer_query) {
1067 extensions->EXT_timer_query = GL_TRUE;
1068 }
1069
1070 if (extensions->ARB_transform_feedback2 &&
1071 extensions->ARB_draw_instanced) {
1072 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1073 }
1074 if (options->force_glsl_extensions_warn)
1075 consts->ForceGLSLExtensionsWarn = 1;
1076
1077 if (options->disable_glsl_line_continuations)
1078 consts->DisableGLSLLineContinuations = 1;
1079
1080 if (options->allow_glsl_extension_directive_midshader)
1081 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1082
1083 consts->MinMapBufferAlignment =
1084 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1085
1086 if (extensions->ARB_texture_buffer_object) {
1087 consts->MaxTextureBufferSize =
1088 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1089 (1u << 31) - 1);
1090 consts->TextureBufferOffsetAlignment =
1091 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1092
1093 if (consts->TextureBufferOffsetAlignment)
1094 extensions->ARB_texture_buffer_range = GL_TRUE;
1095
1096 init_format_extensions(screen, extensions, tbo_rgb32,
1097 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1098 PIPE_BIND_SAMPLER_VIEW);
1099 }
1100
1101 extensions->OES_texture_buffer =
1102 extensions->ARB_texture_buffer_object &&
1103 extensions->ARB_texture_buffer_range &&
1104 extensions->ARB_texture_buffer_object_rgb32 &&
1105 extensions->ARB_shader_image_load_store;
1106
1107 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1108 * If the number of available texture indirections is very limited, then we
1109 * prefer to disable varying packing rather than run the risk of varying
1110 * packing preventing a shader from running.
1111 */
1112 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1113 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1114 /* We can't disable varying packing if transform feedback is available,
1115 * because transform feedback code assumes a packed varying layout.
1116 */
1117 if (!extensions->EXT_transform_feedback)
1118 consts->DisableVaryingPacking = GL_TRUE;
1119 }
1120
1121 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1122 if (consts->MaxViewports >= 16) {
1123 if (consts->GLSLVersion >= 400) {
1124 consts->ViewportBounds.Min = -32768.0;
1125 consts->ViewportBounds.Max = 32767.0;
1126 } else {
1127 consts->ViewportBounds.Min = -16384.0;
1128 consts->ViewportBounds.Max = 16383.0;
1129 }
1130 extensions->ARB_viewport_array = GL_TRUE;
1131 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1132 if (extensions->AMD_vertex_shader_layer)
1133 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1134 }
1135
1136 if (extensions->AMD_vertex_shader_layer &&
1137 extensions->AMD_vertex_shader_viewport_index &&
1138 screen->get_param(screen, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT))
1139 extensions->ARB_shader_viewport_layer_array = GL_TRUE;
1140
1141 /* ARB_framebuffer_no_attachments */
1142 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1143 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1144 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1145 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1146 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1147
1148 /* GL_ARB_ES3_compatibility.
1149 *
1150 * Assume that ES3 is supported if GLSL 3.30 is supported.
1151 * (OpenGL 3.3 is a requirement for that extension.)
1152 */
1153 if (consts->GLSLVersion >= 330 &&
1154 /* Requirements for ETC2 emulation. */
1155 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1156 PIPE_TEXTURE_2D, 0,
1157 PIPE_BIND_SAMPLER_VIEW) &&
1158 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1159 PIPE_TEXTURE_2D, 0,
1160 PIPE_BIND_SAMPLER_VIEW) &&
1161 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1162 PIPE_TEXTURE_2D, 0,
1163 PIPE_BIND_SAMPLER_VIEW) &&
1164 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1165 PIPE_TEXTURE_2D, 0,
1166 PIPE_BIND_SAMPLER_VIEW) &&
1167 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1168 PIPE_TEXTURE_2D, 0,
1169 PIPE_BIND_SAMPLER_VIEW) &&
1170 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1171 PIPE_TEXTURE_2D, 0,
1172 PIPE_BIND_SAMPLER_VIEW)) {
1173 extensions->ARB_ES3_compatibility = GL_TRUE;
1174 }
1175
1176 #ifdef HAVE_ST_VDPAU
1177 if (screen->get_video_param &&
1178 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1179 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1180 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1181 extensions->NV_vdpau_interop = GL_TRUE;
1182 }
1183 #endif
1184
1185 if (screen->get_param(screen, PIPE_CAP_DOUBLES)) {
1186 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1187 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1188 }
1189
1190 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1191 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1192 extensions->GREMEDY_string_marker = GL_TRUE;
1193
1194 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1195 int compute_supported_irs =
1196 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1197 PIPE_SHADER_CAP_SUPPORTED_IRS);
1198 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1199 uint64_t grid_size[3], block_size[3];
1200 uint64_t max_local_size, max_threads_per_block;
1201
1202 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1203 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1204 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1205 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1206 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1207 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1208 &max_threads_per_block);
1209 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1210 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1211 &max_local_size);
1212
1213 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1214 consts->MaxComputeSharedMemorySize = max_local_size;
1215
1216 for (i = 0; i < 3; i++) {
1217 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1218 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1219 }
1220
1221 extensions->ARB_compute_shader =
1222 extensions->ARB_shader_image_load_store &&
1223 extensions->ARB_shader_atomic_counters;
1224
1225 if (extensions->ARB_compute_shader) {
1226 uint64_t max_variable_threads_per_block = 0;
1227
1228 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1229 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1230 &max_variable_threads_per_block);
1231
1232 for (i = 0; i < 3; i++) {
1233 /* Clamp the values to avoid having a local work group size
1234 * greater than the maximum number of invocations.
1235 */
1236 consts->MaxComputeVariableGroupSize[i] =
1237 MIN2(consts->MaxComputeWorkGroupSize[i],
1238 max_variable_threads_per_block);
1239 }
1240 consts->MaxComputeVariableGroupInvocations =
1241 max_variable_threads_per_block;
1242
1243 extensions->ARB_compute_variable_group_size =
1244 max_variable_threads_per_block > 0;
1245 }
1246 }
1247 }
1248
1249 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1250
1251 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1252 * there's no clean way of telling whether we would support ES 3.1 from
1253 * here, so copy the condition from compute_version_es2 here. A lot of
1254 * these are redunant, but simpler to just have a (near-)exact copy here.
1255 */
1256 extensions->ARB_ES3_1_compatibility =
1257 extensions->ARB_ES3_compatibility &&
1258 extensions->ARB_arrays_of_arrays &&
1259 extensions->ARB_compute_shader &&
1260 extensions->ARB_draw_indirect &&
1261 extensions->ARB_explicit_uniform_location &&
1262 extensions->ARB_framebuffer_no_attachments &&
1263 extensions->ARB_shader_atomic_counters &&
1264 extensions->ARB_shader_image_load_store &&
1265 extensions->ARB_shader_image_size &&
1266 extensions->ARB_shader_storage_buffer_object &&
1267 extensions->ARB_shading_language_packing &&
1268 extensions->ARB_stencil_texturing &&
1269 extensions->ARB_texture_multisample &&
1270 extensions->ARB_gpu_shader5 &&
1271 extensions->EXT_shader_integer_mix;
1272
1273 extensions->OES_texture_cube_map_array =
1274 extensions->ARB_ES3_1_compatibility &&
1275 extensions->OES_geometry_shader &&
1276 extensions->ARB_texture_cube_map_array;
1277
1278 extensions->OES_viewport_array =
1279 extensions->ARB_ES3_1_compatibility &&
1280 extensions->OES_geometry_shader &&
1281 extensions->ARB_viewport_array;
1282
1283 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1284 consts->NoPrimitiveBoundingBoxOutput = true;
1285
1286 extensions->ANDROID_extension_pack_es31a =
1287 extensions->KHR_texture_compression_astc_ldr &&
1288 extensions->KHR_blend_equation_advanced &&
1289 extensions->OES_sample_variables &&
1290 extensions->ARB_shader_image_load_store &&
1291 extensions->ARB_texture_stencil8 &&
1292 extensions->ARB_texture_multisample &&
1293 extensions->OES_copy_image &&
1294 extensions->ARB_draw_buffers_blend &&
1295 extensions->OES_geometry_shader &&
1296 extensions->ARB_gpu_shader5 &&
1297 extensions->OES_primitive_bounding_box &&
1298 extensions->ARB_tessellation_shader &&
1299 extensions->ARB_texture_border_clamp &&
1300 extensions->OES_texture_buffer &&
1301 extensions->OES_texture_cube_map_array &&
1302 extensions->EXT_texture_sRGB_decode;
1303
1304 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1305 * before overall versions are selected. Also it's actually a subset of ES
1306 * 3.2, since it doesn't require ASTC or advanced blending.
1307 */
1308 extensions->ARB_ES3_2_compatibility =
1309 extensions->ARB_ES3_1_compatibility &&
1310 extensions->KHR_robustness &&
1311 extensions->ARB_copy_image &&
1312 extensions->ARB_draw_buffers_blend &&
1313 extensions->ARB_draw_elements_base_vertex &&
1314 extensions->OES_geometry_shader &&
1315 extensions->ARB_gpu_shader5 &&
1316 extensions->ARB_sample_shading &&
1317 extensions->ARB_tessellation_shader &&
1318 extensions->ARB_texture_border_clamp &&
1319 extensions->OES_texture_buffer &&
1320 extensions->ARB_texture_cube_map_array &&
1321 extensions->ARB_texture_stencil8 &&
1322 extensions->ARB_texture_multisample;
1323 }