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st/mesa: reenable culling
[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->MaxDrawBuffers = c->MaxColorAttachments =
109 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
110 1, MAX_DRAW_BUFFERS);
111
112 c->MaxDualSourceDrawBuffers =
113 _clamp(screen->get_param(screen,
114 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
115 0, MAX_DRAW_BUFFERS);
116
117 c->MaxLineWidth =
118 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
119 c->MaxLineWidthAA =
120 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
121
122 c->MaxPointSize =
123 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
124 c->MaxPointSizeAA =
125 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
126
127 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
128 * for non-aa sizes, but we can go down to 0.0 for aa points.
129 */
130 c->MinPointSize = 1.0f;
131 c->MinPointSizeAA = 0.0f;
132
133 c->MaxTextureMaxAnisotropy =
134 _maxf(2.0f,
135 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
136
137 c->MaxTextureLodBias =
138 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
139
140 c->QuadsFollowProvokingVertexConvention =
141 screen->get_param(screen,
142 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
143
144 c->MaxUniformBlockSize =
145 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
146 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
147 if (c->MaxUniformBlockSize < 16384) {
148 can_ubo = FALSE;
149 }
150
151 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
152 struct gl_shader_compiler_options *options;
153 struct gl_program_constants *pc;
154
155 switch (sh) {
156 case PIPE_SHADER_FRAGMENT:
157 pc = &c->Program[MESA_SHADER_FRAGMENT];
158 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
159 break;
160 case PIPE_SHADER_VERTEX:
161 pc = &c->Program[MESA_SHADER_VERTEX];
162 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
163 break;
164 case PIPE_SHADER_GEOMETRY:
165 pc = &c->Program[MESA_SHADER_GEOMETRY];
166 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
167 break;
168 case PIPE_SHADER_TESS_CTRL:
169 pc = &c->Program[MESA_SHADER_TESS_CTRL];
170 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
171 break;
172 case PIPE_SHADER_TESS_EVAL:
173 pc = &c->Program[MESA_SHADER_TESS_EVAL];
174 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
175 break;
176 case PIPE_SHADER_COMPUTE:
177 pc = &c->Program[MESA_SHADER_COMPUTE];
178 options = &c->ShaderCompilerOptions[MESA_SHADER_COMPUTE];
179
180 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
181 continue;
182 supported_irs =
183 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
184 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
185 continue;
186 break;
187 default:
188 assert(0);
189 }
190
191 pc->MaxTextureImageUnits =
192 _min(screen->get_shader_param(screen, sh,
193 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
194 MAX_TEXTURE_IMAGE_UNITS);
195
196 pc->MaxInstructions =
197 pc->MaxNativeInstructions =
198 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
199 pc->MaxAluInstructions =
200 pc->MaxNativeAluInstructions =
201 screen->get_shader_param(screen, sh,
202 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
203 pc->MaxTexInstructions =
204 pc->MaxNativeTexInstructions =
205 screen->get_shader_param(screen, sh,
206 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
207 pc->MaxTexIndirections =
208 pc->MaxNativeTexIndirections =
209 screen->get_shader_param(screen, sh,
210 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
211 pc->MaxAttribs =
212 pc->MaxNativeAttribs =
213 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
214 pc->MaxTemps =
215 pc->MaxNativeTemps =
216 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
217 pc->MaxAddressRegs =
218 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
219 pc->MaxParameters =
220 pc->MaxNativeParameters =
221 screen->get_shader_param(screen, sh,
222 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
223 pc->MaxInputComponents =
224 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
225 pc->MaxOutputComponents =
226 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
227
228 pc->MaxUniformComponents =
229 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
230
231 pc->MaxUniformBlocks =
232 screen->get_shader_param(screen, sh,
233 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
234 if (pc->MaxUniformBlocks)
235 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
236 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
237
238 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
239 c->MaxUniformBlockSize / 4 *
240 pc->MaxUniformBlocks);
241
242 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
243 pc->MaxAtomicBuffers = screen->get_shader_param(
244 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
245 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
246
247 pc->MaxImageUniforms = screen->get_shader_param(
248 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
249
250 /* Gallium doesn't really care about local vs. env parameters so use the
251 * same limits.
252 */
253 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
254 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
255
256 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
257 pc->LowInt.RangeMin = 31;
258 pc->LowInt.RangeMax = 30;
259 pc->LowInt.Precision = 0;
260 pc->MediumInt = pc->HighInt = pc->LowInt;
261 }
262
263 options->EmitNoNoise = TRUE;
264
265 /* TODO: make these more fine-grained if anyone needs it */
266 options->MaxIfDepth =
267 screen->get_shader_param(screen, sh,
268 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
269 options->EmitNoLoops =
270 !screen->get_shader_param(screen, sh,
271 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
272 options->EmitNoFunctions =
273 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
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 if (sh == PIPE_SHADER_COMPUTE)
313 options->LowerShaderSharedVariables = true;
314 }
315
316 c->LowerTessLevel = 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 MAX2(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 c->MaxImageSamples = 0; /* XXX */
446 if (c->MaxCombinedImageUniforms) {
447 extensions->ARB_shader_image_load_store = GL_TRUE;
448 extensions->ARB_shader_image_size = GL_TRUE;
449 }
450
451 /* ARB_framebuffer_no_attachments */
452 c->MaxFramebufferWidth = c->MaxViewportWidth;
453 c->MaxFramebufferHeight = c->MaxViewportHeight;
454 /* NOTE: we cheat here a little by assuming that
455 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
456 * number of layers as we need, although we technically
457 * could have more the generality is not really useful
458 * in practicality.
459 */
460 c->MaxFramebufferLayers =
461 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
462 }
463
464
465 /**
466 * Given a member \c x of struct gl_extensions, return offset of
467 * \c x in bytes.
468 */
469 #define o(x) offsetof(struct gl_extensions, x)
470
471
472 struct st_extension_cap_mapping {
473 int extension_offset;
474 int cap;
475 };
476
477 struct st_extension_format_mapping {
478 int extension_offset[2];
479 enum pipe_format format[32];
480
481 /* If TRUE, at least one format must be supported for the extensions to be
482 * advertised. If FALSE, all the formats must be supported. */
483 GLboolean need_at_least_one;
484 };
485
486 /**
487 * Enable extensions if certain pipe formats are supported by the driver.
488 * What extensions will be enabled and what formats must be supported is
489 * described by the array of st_extension_format_mapping.
490 *
491 * target and bind_flags are passed to is_format_supported.
492 */
493 static void
494 init_format_extensions(struct pipe_screen *screen,
495 struct gl_extensions *extensions,
496 const struct st_extension_format_mapping *mapping,
497 unsigned num_mappings,
498 enum pipe_texture_target target,
499 unsigned bind_flags)
500 {
501 GLboolean *extension_table = (GLboolean *) extensions;
502 unsigned i;
503 int j;
504 int num_formats = ARRAY_SIZE(mapping->format);
505 int num_ext = ARRAY_SIZE(mapping->extension_offset);
506
507 for (i = 0; i < num_mappings; i++) {
508 int num_supported = 0;
509
510 /* Examine each format in the list. */
511 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
512 if (screen->is_format_supported(screen, mapping[i].format[j],
513 target, 0, bind_flags)) {
514 num_supported++;
515 }
516 }
517
518 if (!num_supported ||
519 (!mapping[i].need_at_least_one && num_supported != j)) {
520 continue;
521 }
522
523 /* Enable all extensions in the list. */
524 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
525 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
526 }
527 }
528
529
530 /**
531 * Given a list of formats and bind flags, return the maximum number
532 * of samples supported by any of those formats.
533 */
534 static unsigned
535 get_max_samples_for_formats(struct pipe_screen *screen,
536 unsigned num_formats,
537 enum pipe_format *formats,
538 unsigned max_samples,
539 unsigned bind)
540 {
541 unsigned i, f;
542
543 for (i = max_samples; i > 0; --i) {
544 for (f = 0; f < num_formats; f++) {
545 if (screen->is_format_supported(screen, formats[f],
546 PIPE_TEXTURE_2D, i, bind)) {
547 return i;
548 }
549 }
550 }
551 return 0;
552 }
553
554
555 /**
556 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
557 * which GL extensions are supported.
558 * Quite a few extensions are always supported because they are standard
559 * features or can be built on top of other gallium features.
560 * Some fine tuning may still be needed.
561 */
562 void st_init_extensions(struct pipe_screen *screen,
563 struct gl_constants *consts,
564 struct gl_extensions *extensions,
565 struct st_config_options *options,
566 boolean has_lib_dxtc)
567 {
568 unsigned i;
569 GLboolean *extension_table = (GLboolean *) extensions;
570
571 static const struct st_extension_cap_mapping cap_mapping[] = {
572 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
573 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
574 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
575 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
576 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
577 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
578 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
579 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
580 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
581 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
582 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
583 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
584 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
585 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
586 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
587 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
588 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
589 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
590 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
591 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
592 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
593 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
594 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
595 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
596 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
597 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
598 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
599 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
600 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
601 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
602 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
603 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
604 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
605 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
606 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
607 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
608 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
609 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
610 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
611 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
612 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
613 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
614
615 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
616 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
617 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
618 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
619 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
620 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
621 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
622 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
623 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
624 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
625
626 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
627 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
628 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
629 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
630 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
631 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
632 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
633 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
634 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
635 /* GL_NV_point_sprite is not supported by gallium because we don't
636 * support the GL_POINT_SPRITE_R_MODE_NV option. */
637
638 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
639 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
640 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
641 };
642
643 /* Required: render target and sampler support */
644 static const struct st_extension_format_mapping rendertarget_mapping[] = {
645 { { o(ARB_texture_float) },
646 { PIPE_FORMAT_R32G32B32A32_FLOAT,
647 PIPE_FORMAT_R16G16B16A16_FLOAT } },
648
649 { { o(OES_texture_float) },
650 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
651
652 { { o(OES_texture_half_float) },
653 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
654
655 { { o(ARB_texture_rgb10_a2ui) },
656 { PIPE_FORMAT_R10G10B10A2_UINT,
657 PIPE_FORMAT_B10G10R10A2_UINT },
658 GL_TRUE }, /* at least one format must be supported */
659
660 { { o(EXT_framebuffer_sRGB) },
661 { PIPE_FORMAT_A8B8G8R8_SRGB,
662 PIPE_FORMAT_B8G8R8A8_SRGB },
663 GL_TRUE }, /* at least one format must be supported */
664
665 { { o(EXT_packed_float) },
666 { PIPE_FORMAT_R11G11B10_FLOAT } },
667
668 { { o(EXT_texture_integer) },
669 { PIPE_FORMAT_R32G32B32A32_UINT,
670 PIPE_FORMAT_R32G32B32A32_SINT } },
671
672 { { o(ARB_texture_rg) },
673 { PIPE_FORMAT_R8_UNORM,
674 PIPE_FORMAT_R8G8_UNORM } },
675 };
676
677 /* Required: depth stencil and sampler support */
678 static const struct st_extension_format_mapping depthstencil_mapping[] = {
679 { { o(ARB_depth_buffer_float) },
680 { PIPE_FORMAT_Z32_FLOAT,
681 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
682 };
683
684 /* Required: sampler support */
685 static const struct st_extension_format_mapping texture_mapping[] = {
686 { { o(ARB_texture_compression_rgtc) },
687 { PIPE_FORMAT_RGTC1_UNORM,
688 PIPE_FORMAT_RGTC1_SNORM,
689 PIPE_FORMAT_RGTC2_UNORM,
690 PIPE_FORMAT_RGTC2_SNORM } },
691
692 { { o(EXT_texture_compression_latc) },
693 { PIPE_FORMAT_LATC1_UNORM,
694 PIPE_FORMAT_LATC1_SNORM,
695 PIPE_FORMAT_LATC2_UNORM,
696 PIPE_FORMAT_LATC2_SNORM } },
697
698 { { o(EXT_texture_compression_s3tc),
699 o(ANGLE_texture_compression_dxt) },
700 { PIPE_FORMAT_DXT1_RGB,
701 PIPE_FORMAT_DXT1_RGBA,
702 PIPE_FORMAT_DXT3_RGBA,
703 PIPE_FORMAT_DXT5_RGBA } },
704
705 { { o(ARB_texture_compression_bptc) },
706 { PIPE_FORMAT_BPTC_RGBA_UNORM,
707 PIPE_FORMAT_BPTC_SRGBA,
708 PIPE_FORMAT_BPTC_RGB_FLOAT,
709 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
710
711 { { o(KHR_texture_compression_astc_ldr) },
712 { PIPE_FORMAT_ASTC_4x4,
713 PIPE_FORMAT_ASTC_5x4,
714 PIPE_FORMAT_ASTC_5x5,
715 PIPE_FORMAT_ASTC_6x5,
716 PIPE_FORMAT_ASTC_6x6,
717 PIPE_FORMAT_ASTC_8x5,
718 PIPE_FORMAT_ASTC_8x6,
719 PIPE_FORMAT_ASTC_8x8,
720 PIPE_FORMAT_ASTC_10x5,
721 PIPE_FORMAT_ASTC_10x6,
722 PIPE_FORMAT_ASTC_10x8,
723 PIPE_FORMAT_ASTC_10x10,
724 PIPE_FORMAT_ASTC_12x10,
725 PIPE_FORMAT_ASTC_12x12,
726 PIPE_FORMAT_ASTC_4x4_SRGB,
727 PIPE_FORMAT_ASTC_5x4_SRGB,
728 PIPE_FORMAT_ASTC_5x5_SRGB,
729 PIPE_FORMAT_ASTC_6x5_SRGB,
730 PIPE_FORMAT_ASTC_6x6_SRGB,
731 PIPE_FORMAT_ASTC_8x5_SRGB,
732 PIPE_FORMAT_ASTC_8x6_SRGB,
733 PIPE_FORMAT_ASTC_8x8_SRGB,
734 PIPE_FORMAT_ASTC_10x5_SRGB,
735 PIPE_FORMAT_ASTC_10x6_SRGB,
736 PIPE_FORMAT_ASTC_10x8_SRGB,
737 PIPE_FORMAT_ASTC_10x10_SRGB,
738 PIPE_FORMAT_ASTC_12x10_SRGB,
739 PIPE_FORMAT_ASTC_12x12_SRGB } },
740
741 { { o(EXT_texture_shared_exponent) },
742 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
743
744 { { o(EXT_texture_snorm) },
745 { PIPE_FORMAT_R8G8B8A8_SNORM } },
746
747 { { o(EXT_texture_sRGB),
748 o(EXT_texture_sRGB_decode) },
749 { PIPE_FORMAT_A8B8G8R8_SRGB,
750 PIPE_FORMAT_B8G8R8A8_SRGB },
751 GL_TRUE }, /* at least one format must be supported */
752
753 { { o(ATI_texture_compression_3dc) },
754 { PIPE_FORMAT_LATC2_UNORM } },
755
756 { { o(MESA_ycbcr_texture) },
757 { PIPE_FORMAT_UYVY,
758 PIPE_FORMAT_YUYV },
759 GL_TRUE }, /* at least one format must be supported */
760
761 { { o(OES_compressed_ETC1_RGB8_texture) },
762 { PIPE_FORMAT_ETC1_RGB8,
763 PIPE_FORMAT_R8G8B8A8_UNORM },
764 GL_TRUE }, /* at least one format must be supported */
765
766 { { o(ARB_stencil_texturing),
767 o(ARB_texture_stencil8) },
768 { PIPE_FORMAT_X24S8_UINT,
769 PIPE_FORMAT_S8X24_UINT },
770 GL_TRUE }, /* at least one format must be supported */
771 };
772
773 /* Required: vertex fetch support. */
774 static const struct st_extension_format_mapping vertex_mapping[] = {
775 { { o(ARB_vertex_type_2_10_10_10_rev) },
776 { PIPE_FORMAT_R10G10B10A2_UNORM,
777 PIPE_FORMAT_B10G10R10A2_UNORM,
778 PIPE_FORMAT_R10G10B10A2_SNORM,
779 PIPE_FORMAT_B10G10R10A2_SNORM,
780 PIPE_FORMAT_R10G10B10A2_USCALED,
781 PIPE_FORMAT_B10G10R10A2_USCALED,
782 PIPE_FORMAT_R10G10B10A2_SSCALED,
783 PIPE_FORMAT_B10G10R10A2_SSCALED } },
784 { { o(ARB_vertex_type_10f_11f_11f_rev) },
785 { PIPE_FORMAT_R11G11B10_FLOAT } },
786 };
787
788 static const struct st_extension_format_mapping tbo_rgb32[] = {
789 { {o(ARB_texture_buffer_object_rgb32) },
790 { PIPE_FORMAT_R32G32B32_FLOAT,
791 PIPE_FORMAT_R32G32B32_UINT,
792 PIPE_FORMAT_R32G32B32_SINT,
793 } },
794 };
795
796 /*
797 * Extensions that are supported by all Gallium drivers:
798 */
799 extensions->ARB_ES2_compatibility = GL_TRUE;
800 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
801 extensions->ARB_explicit_attrib_location = GL_TRUE;
802 extensions->ARB_explicit_uniform_location = GL_TRUE;
803 extensions->ARB_fragment_coord_conventions = GL_TRUE;
804 extensions->ARB_fragment_program = GL_TRUE;
805 extensions->ARB_fragment_shader = GL_TRUE;
806 extensions->ARB_half_float_vertex = GL_TRUE;
807 extensions->ARB_internalformat_query = GL_TRUE;
808 extensions->ARB_internalformat_query2 = GL_TRUE;
809 extensions->ARB_map_buffer_range = GL_TRUE;
810 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
811 extensions->ARB_texture_cube_map = GL_TRUE;
812 extensions->ARB_texture_env_combine = GL_TRUE;
813 extensions->ARB_texture_env_crossbar = GL_TRUE;
814 extensions->ARB_texture_env_dot3 = GL_TRUE;
815 extensions->ARB_vertex_program = GL_TRUE;
816 extensions->ARB_vertex_shader = GL_TRUE;
817
818 extensions->EXT_blend_color = GL_TRUE;
819 extensions->EXT_blend_func_separate = GL_TRUE;
820 extensions->EXT_blend_minmax = GL_TRUE;
821 extensions->EXT_gpu_program_parameters = GL_TRUE;
822 extensions->EXT_pixel_buffer_object = GL_TRUE;
823 extensions->EXT_point_parameters = GL_TRUE;
824 extensions->EXT_provoking_vertex = GL_TRUE;
825
826 extensions->EXT_texture_env_dot3 = GL_TRUE;
827 extensions->EXT_vertex_array_bgra = GL_TRUE;
828
829 extensions->ATI_fragment_shader = GL_TRUE;
830 extensions->ATI_texture_env_combine3 = GL_TRUE;
831
832 extensions->MESA_pack_invert = GL_TRUE;
833
834 extensions->NV_fog_distance = GL_TRUE;
835 extensions->NV_texture_env_combine4 = GL_TRUE;
836 extensions->NV_texture_rectangle = GL_TRUE;
837
838 extensions->OES_EGL_image = GL_TRUE;
839 extensions->OES_EGL_image_external = GL_TRUE;
840 extensions->OES_draw_texture = GL_TRUE;
841
842 /* Expose the extensions which directly correspond to gallium caps. */
843 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
844 if (screen->get_param(screen, cap_mapping[i].cap)) {
845 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
846 }
847 }
848
849 /* Expose the extensions which directly correspond to gallium formats. */
850 init_format_extensions(screen, extensions, rendertarget_mapping,
851 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
852 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
853 init_format_extensions(screen, extensions, depthstencil_mapping,
854 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
855 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
856 init_format_extensions(screen, extensions, texture_mapping,
857 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
858 PIPE_BIND_SAMPLER_VIEW);
859 init_format_extensions(screen, extensions, vertex_mapping,
860 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
861 PIPE_BIND_VERTEX_BUFFER);
862
863 /* Figure out GLSL support and set GLSLVersion to it. */
864 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
865
866 _mesa_override_glsl_version(consts);
867
868 if (options->force_glsl_version > 0 &&
869 options->force_glsl_version <= consts->GLSLVersion) {
870 consts->ForceGLSLVersion = options->force_glsl_version;
871 }
872
873 if (consts->GLSLVersion >= 400)
874 extensions->ARB_gpu_shader5 = GL_TRUE;
875 if (consts->GLSLVersion >= 410)
876 extensions->ARB_shader_precision = GL_TRUE;
877
878 /* This extension needs full OpenGL 3.2, but we don't know if that's
879 * supported at this point. Only check the GLSL version. */
880 if (consts->GLSLVersion >= 150 &&
881 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
882 extensions->AMD_vertex_shader_layer = GL_TRUE;
883 }
884
885 if (consts->GLSLVersion >= 130) {
886 consts->NativeIntegers = GL_TRUE;
887 consts->MaxClipPlanes = 8;
888
889 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
890 consts->VertexID_is_zero_based = GL_TRUE;
891 }
892
893 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
894 extensions->ARB_conservative_depth = GL_TRUE;
895 extensions->ARB_shading_language_packing = GL_TRUE;
896 extensions->OES_depth_texture_cube_map = GL_TRUE;
897 extensions->ARB_shading_language_420pack = GL_TRUE;
898 extensions->ARB_texture_query_levels = GL_TRUE;
899 extensions->ARB_shader_subroutine = GL_TRUE;
900
901 if (!options->disable_shader_bit_encoding) {
902 extensions->ARB_shader_bit_encoding = GL_TRUE;
903 }
904
905 extensions->EXT_shader_integer_mix = GL_TRUE;
906 extensions->ARB_arrays_of_arrays = GL_TRUE;
907 } else {
908 /* Optional integer support for GLSL 1.2. */
909 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
910 PIPE_SHADER_CAP_INTEGERS) &&
911 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
912 PIPE_SHADER_CAP_INTEGERS)) {
913 consts->NativeIntegers = GL_TRUE;
914
915 extensions->EXT_shader_integer_mix = GL_TRUE;
916 }
917
918 /* Integer textures make no sense before GLSL 1.30 */
919 extensions->EXT_texture_integer = GL_FALSE;
920 }
921
922 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
923
924 /* Below are the cases which cannot be moved into tables easily. */
925
926 if (!has_lib_dxtc && !options->force_s3tc_enable) {
927 extensions->EXT_texture_compression_s3tc = GL_FALSE;
928 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
929 }
930
931 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
932 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
933 extensions->ARB_tessellation_shader = GL_TRUE;
934 }
935
936 if (screen->fence_finish) {
937 extensions->ARB_sync = GL_TRUE;
938 }
939
940 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
941 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
942 */
943 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
944 extensions->ARB_gpu_shader5;
945
946 /* If we don't have native ETC2 support, we don't keep track of the
947 * original ETC2 data. This is necessary to be able to copy images between
948 * compatible view classes.
949 */
950 if (extensions->ARB_copy_image && screen->is_format_supported(
951 screen, PIPE_FORMAT_ETC2_RGB8,
952 PIPE_TEXTURE_2D, 0,
953 PIPE_BIND_SAMPLER_VIEW)) {
954 extensions->OES_copy_image = GL_TRUE;
955 }
956
957 /* Maximum sample count. */
958 {
959 enum pipe_format color_formats[] = {
960 PIPE_FORMAT_R8G8B8A8_UNORM,
961 PIPE_FORMAT_B8G8R8A8_UNORM,
962 PIPE_FORMAT_A8R8G8B8_UNORM,
963 PIPE_FORMAT_A8B8G8R8_UNORM,
964 };
965 enum pipe_format depth_formats[] = {
966 PIPE_FORMAT_Z16_UNORM,
967 PIPE_FORMAT_Z24X8_UNORM,
968 PIPE_FORMAT_X8Z24_UNORM,
969 PIPE_FORMAT_Z32_UNORM,
970 PIPE_FORMAT_Z32_FLOAT
971 };
972 enum pipe_format int_formats[] = {
973 PIPE_FORMAT_R8G8B8A8_SINT
974 };
975 enum pipe_format void_formats[] = {
976 PIPE_FORMAT_NONE
977 };
978
979 consts->MaxSamples =
980 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
981 color_formats, 16,
982 PIPE_BIND_RENDER_TARGET);
983
984 consts->MaxColorTextureSamples =
985 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
986 color_formats, consts->MaxSamples,
987 PIPE_BIND_SAMPLER_VIEW);
988
989 consts->MaxDepthTextureSamples =
990 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
991 depth_formats, consts->MaxSamples,
992 PIPE_BIND_SAMPLER_VIEW);
993
994 consts->MaxIntegerSamples =
995 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
996 int_formats, consts->MaxSamples,
997 PIPE_BIND_SAMPLER_VIEW);
998
999 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1000 consts->MaxFramebufferSamples =
1001 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1002 void_formats, 32,
1003 PIPE_BIND_RENDER_TARGET);
1004 }
1005 if (consts->MaxSamples == 1) {
1006 /* one sample doesn't really make sense */
1007 consts->MaxSamples = 0;
1008 }
1009 else if (consts->MaxSamples >= 2) {
1010 extensions->EXT_framebuffer_multisample = GL_TRUE;
1011 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1012 }
1013
1014 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1015 consts->FakeSWMSAA = GL_TRUE;
1016 extensions->EXT_framebuffer_multisample = GL_TRUE;
1017 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1018 extensions->ARB_texture_multisample = GL_TRUE;
1019 }
1020
1021 if (consts->MaxDualSourceDrawBuffers > 0 &&
1022 !options->disable_blend_func_extended)
1023 extensions->ARB_blend_func_extended = GL_TRUE;
1024
1025 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1026 extensions->ARB_timer_query) {
1027 extensions->EXT_timer_query = GL_TRUE;
1028 }
1029
1030 if (extensions->ARB_transform_feedback2 &&
1031 extensions->ARB_draw_instanced) {
1032 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1033 }
1034 if (options->force_glsl_extensions_warn)
1035 consts->ForceGLSLExtensionsWarn = 1;
1036
1037 if (options->disable_glsl_line_continuations)
1038 consts->DisableGLSLLineContinuations = 1;
1039
1040 if (options->allow_glsl_extension_directive_midshader)
1041 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1042
1043 consts->MinMapBufferAlignment =
1044 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1045
1046 if (extensions->ARB_texture_buffer_object) {
1047 consts->MaxTextureBufferSize =
1048 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1049 (1u << 31) - 1);
1050 consts->TextureBufferOffsetAlignment =
1051 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1052
1053 if (consts->TextureBufferOffsetAlignment)
1054 extensions->ARB_texture_buffer_range = GL_TRUE;
1055
1056 init_format_extensions(screen, extensions, tbo_rgb32,
1057 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1058 PIPE_BIND_SAMPLER_VIEW);
1059 }
1060
1061 extensions->OES_texture_buffer =
1062 extensions->ARB_texture_buffer_object &&
1063 extensions->ARB_texture_buffer_range &&
1064 extensions->ARB_texture_buffer_object_rgb32 &&
1065 extensions->ARB_shader_image_load_store;
1066
1067 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1068 * If the number of available texture indirections is very limited, then we
1069 * prefer to disable varying packing rather than run the risk of varying
1070 * packing preventing a shader from running.
1071 */
1072 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1073 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1074 /* We can't disable varying packing if transform feedback is available,
1075 * because transform feedback code assumes a packed varying layout.
1076 */
1077 if (!extensions->EXT_transform_feedback)
1078 consts->DisableVaryingPacking = GL_TRUE;
1079 }
1080
1081 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1082 if (consts->MaxViewports >= 16) {
1083 if (consts->GLSLVersion >= 400) {
1084 consts->ViewportBounds.Min = -32768.0;
1085 consts->ViewportBounds.Max = 32767.0;
1086 } else {
1087 consts->ViewportBounds.Min = -16384.0;
1088 consts->ViewportBounds.Max = 16383.0;
1089 }
1090 extensions->ARB_viewport_array = GL_TRUE;
1091 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1092 if (extensions->AMD_vertex_shader_layer)
1093 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1094 }
1095
1096 /* ARB_framebuffer_no_attachments */
1097 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1098 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1099 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1100 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1101 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1102
1103 /* GL_ARB_ES3_compatibility.
1104 *
1105 * Assume that ES3 is supported if GLSL 3.30 is supported.
1106 * (OpenGL 3.3 is a requirement for that extension.)
1107 */
1108 if (consts->GLSLVersion >= 330 &&
1109 /* Requirements for ETC2 emulation. */
1110 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1111 PIPE_TEXTURE_2D, 0,
1112 PIPE_BIND_SAMPLER_VIEW) &&
1113 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1114 PIPE_TEXTURE_2D, 0,
1115 PIPE_BIND_SAMPLER_VIEW) &&
1116 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1117 PIPE_TEXTURE_2D, 0,
1118 PIPE_BIND_SAMPLER_VIEW) &&
1119 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1120 PIPE_TEXTURE_2D, 0,
1121 PIPE_BIND_SAMPLER_VIEW) &&
1122 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1123 PIPE_TEXTURE_2D, 0,
1124 PIPE_BIND_SAMPLER_VIEW) &&
1125 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1126 PIPE_TEXTURE_2D, 0,
1127 PIPE_BIND_SAMPLER_VIEW)) {
1128 extensions->ARB_ES3_compatibility = GL_TRUE;
1129 }
1130
1131 #ifdef HAVE_ST_VDPAU
1132 if (screen->get_video_param &&
1133 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1134 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1135 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1136 extensions->NV_vdpau_interop = GL_TRUE;
1137 }
1138 #endif
1139
1140 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1141 PIPE_SHADER_CAP_DOUBLES) &&
1142 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1143 PIPE_SHADER_CAP_DOUBLES)) {
1144 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1145 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1146 }
1147
1148 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1149 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1150 extensions->GREMEDY_string_marker = GL_TRUE;
1151
1152 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1153 int compute_supported_irs =
1154 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1155 PIPE_SHADER_CAP_SUPPORTED_IRS);
1156 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1157 uint64_t grid_size[3], block_size[3];
1158 uint64_t max_local_size, max_threads_per_block;
1159
1160 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1161 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1162 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1163 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1164 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1165 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1166 &max_threads_per_block);
1167 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1168 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1169 &max_local_size);
1170
1171 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1172 consts->MaxComputeSharedMemorySize = max_local_size;
1173
1174 for (i = 0; i < 3; i++) {
1175 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1176 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1177 }
1178
1179 extensions->ARB_compute_shader =
1180 extensions->ARB_shader_image_load_store &&
1181 extensions->ARB_shader_atomic_counters;
1182 }
1183 }
1184 }