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mesa/main: Add support for GL_ARB_cull_distance (v2)
[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
318 c->MaxCombinedTextureImageUnits =
319 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
320 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
321 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
322 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
323 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
324 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
325 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
326
327 /* This depends on program constants. */
328 c->MaxTextureCoordUnits
329 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
330 MAX_TEXTURE_COORD_UNITS);
331
332 c->MaxTextureUnits =
333 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
334 c->MaxTextureCoordUnits);
335
336 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
337 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
338
339 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
340 * of inputs. It's always 2 colors + N generic inputs. */
341 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
342 PIPE_SHADER_CAP_MAX_INPUTS);
343 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
344 c->MaxGeometryOutputVertices =
345 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
346 c->MaxGeometryTotalOutputComponents =
347 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
348 c->MaxTessPatchComponents =
349 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
350 MAX_VARYING) * 4;
351
352 c->MinProgramTexelOffset =
353 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
354 c->MaxProgramTexelOffset =
355 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
356
357 c->MaxProgramTextureGatherComponents =
358 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
359 c->MinProgramTextureGatherOffset =
360 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
361 c->MaxProgramTextureGatherOffset =
362 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
363
364 c->MaxTransformFeedbackBuffers =
365 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
366 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
367 MAX_FEEDBACK_BUFFERS);
368 c->MaxTransformFeedbackSeparateComponents =
369 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
370 c->MaxTransformFeedbackInterleavedComponents =
371 screen->get_param(screen,
372 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
373 c->MaxVertexStreams =
374 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
375
376 /* The vertex stream must fit into pipe_stream_output_info::stream */
377 assert(c->MaxVertexStreams <= 4);
378
379 c->MaxVertexAttribStride
380 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
381
382 c->StripTextureBorder = GL_TRUE;
383
384 c->GLSLSkipStrictMaxUniformLimitCheck =
385 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
386
387 c->UniformBufferOffsetAlignment =
388 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
389
390 if (can_ubo) {
391 extensions->ARB_uniform_buffer_object = GL_TRUE;
392 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
393 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
394 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
395 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
396 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
397 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
398 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
399 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
400 }
401
402 c->GLSLFragCoordIsSysVal =
403 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
404 c->GLSLFrontFacingIsSysVal =
405 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
406
407 c->MaxAtomicBufferBindings =
408 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
409 c->MaxCombinedAtomicBuffers =
410 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
411 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
412 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
413 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
414 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
415 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
416
417 if (c->MaxCombinedAtomicBuffers > 0) {
418 extensions->ARB_shader_atomic_counters = GL_TRUE;
419 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
420 }
421
422 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
423 c->ShaderStorageBufferOffsetAlignment =
424 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
425 if (c->ShaderStorageBufferOffsetAlignment) {
426 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
427 c->MaxCombinedAtomicBuffers;
428 c->MaxCombinedShaderOutputResources +=
429 c->MaxCombinedShaderStorageBlocks;
430 c->MaxShaderStorageBlockSize = 1 << 27;
431 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
432 }
433
434 c->MaxCombinedImageUniforms =
435 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
436 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
437 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
438 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
439 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
440 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
441 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
442 c->MaxImageUnits = MAX_IMAGE_UNITS;
443 c->MaxImageSamples = 0; /* XXX */
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
462
463 /**
464 * Given a member \c x of struct gl_extensions, return offset of
465 * \c x in bytes.
466 */
467 #define o(x) offsetof(struct gl_extensions, x)
468
469
470 struct st_extension_cap_mapping {
471 int extension_offset;
472 int cap;
473 };
474
475 struct st_extension_format_mapping {
476 int extension_offset[2];
477 enum pipe_format format[32];
478
479 /* If TRUE, at least one format must be supported for the extensions to be
480 * advertised. If FALSE, all the formats must be supported. */
481 GLboolean need_at_least_one;
482 };
483
484 /**
485 * Enable extensions if certain pipe formats are supported by the driver.
486 * What extensions will be enabled and what formats must be supported is
487 * described by the array of st_extension_format_mapping.
488 *
489 * target and bind_flags are passed to is_format_supported.
490 */
491 static void
492 init_format_extensions(struct pipe_screen *screen,
493 struct gl_extensions *extensions,
494 const struct st_extension_format_mapping *mapping,
495 unsigned num_mappings,
496 enum pipe_texture_target target,
497 unsigned bind_flags)
498 {
499 GLboolean *extension_table = (GLboolean *) extensions;
500 unsigned i;
501 int j;
502 int num_formats = ARRAY_SIZE(mapping->format);
503 int num_ext = ARRAY_SIZE(mapping->extension_offset);
504
505 for (i = 0; i < num_mappings; i++) {
506 int num_supported = 0;
507
508 /* Examine each format in the list. */
509 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
510 if (screen->is_format_supported(screen, mapping[i].format[j],
511 target, 0, bind_flags)) {
512 num_supported++;
513 }
514 }
515
516 if (!num_supported ||
517 (!mapping[i].need_at_least_one && num_supported != j)) {
518 continue;
519 }
520
521 /* Enable all extensions in the list. */
522 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
523 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
524 }
525 }
526
527
528 /**
529 * Given a list of formats and bind flags, return the maximum number
530 * of samples supported by any of those formats.
531 */
532 static unsigned
533 get_max_samples_for_formats(struct pipe_screen *screen,
534 unsigned num_formats,
535 enum pipe_format *formats,
536 unsigned max_samples,
537 unsigned bind)
538 {
539 unsigned i, f;
540
541 for (i = max_samples; i > 0; --i) {
542 for (f = 0; f < num_formats; f++) {
543 if (screen->is_format_supported(screen, formats[f],
544 PIPE_TEXTURE_2D, i, bind)) {
545 return i;
546 }
547 }
548 }
549 return 0;
550 }
551
552
553 /**
554 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
555 * which GL extensions are supported.
556 * Quite a few extensions are always supported because they are standard
557 * features or can be built on top of other gallium features.
558 * Some fine tuning may still be needed.
559 */
560 void st_init_extensions(struct pipe_screen *screen,
561 struct gl_constants *consts,
562 struct gl_extensions *extensions,
563 struct st_config_options *options,
564 boolean has_lib_dxtc)
565 {
566 unsigned i;
567 GLboolean *extension_table = (GLboolean *) extensions;
568
569 static const struct st_extension_cap_mapping cap_mapping[] = {
570 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
571 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
572 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
573 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
574 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
575 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
576 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
577 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
578 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
579 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
580 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
581 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
582 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
583 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
584 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
585 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
586 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
587 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
588 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
589 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
590 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
591 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
592 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
593 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
594 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
595 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
596 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
597 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
598 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
599 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
600 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
601 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
602 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
603 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
604 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
605 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
606 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
607 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
608 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
609 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
610 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
611
612 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
613 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
614 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
615 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
616 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
617 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
618 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
619 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
620 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
621 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
622
623 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
624 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
625 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
626 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
627 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
628 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
629 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
630 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
631 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
632 /* GL_NV_point_sprite is not supported by gallium because we don't
633 * support the GL_POINT_SPRITE_R_MODE_NV option. */
634
635 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
636 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
637 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
638 };
639
640 /* Required: render target and sampler support */
641 static const struct st_extension_format_mapping rendertarget_mapping[] = {
642 { { o(ARB_texture_float) },
643 { PIPE_FORMAT_R32G32B32A32_FLOAT,
644 PIPE_FORMAT_R16G16B16A16_FLOAT } },
645
646 { { o(OES_texture_float) },
647 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
648
649 { { o(OES_texture_half_float) },
650 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
651
652 { { o(ARB_texture_rgb10_a2ui) },
653 { PIPE_FORMAT_R10G10B10A2_UINT,
654 PIPE_FORMAT_B10G10R10A2_UINT },
655 GL_TRUE }, /* at least one format must be supported */
656
657 { { o(EXT_framebuffer_sRGB) },
658 { PIPE_FORMAT_A8B8G8R8_SRGB,
659 PIPE_FORMAT_B8G8R8A8_SRGB },
660 GL_TRUE }, /* at least one format must be supported */
661
662 { { o(EXT_packed_float) },
663 { PIPE_FORMAT_R11G11B10_FLOAT } },
664
665 { { o(EXT_texture_integer) },
666 { PIPE_FORMAT_R32G32B32A32_UINT,
667 PIPE_FORMAT_R32G32B32A32_SINT } },
668
669 { { o(ARB_texture_rg) },
670 { PIPE_FORMAT_R8_UNORM,
671 PIPE_FORMAT_R8G8_UNORM } },
672 };
673
674 /* Required: depth stencil and sampler support */
675 static const struct st_extension_format_mapping depthstencil_mapping[] = {
676 { { o(ARB_depth_buffer_float) },
677 { PIPE_FORMAT_Z32_FLOAT,
678 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
679 };
680
681 /* Required: sampler support */
682 static const struct st_extension_format_mapping texture_mapping[] = {
683 { { o(ARB_texture_compression_rgtc) },
684 { PIPE_FORMAT_RGTC1_UNORM,
685 PIPE_FORMAT_RGTC1_SNORM,
686 PIPE_FORMAT_RGTC2_UNORM,
687 PIPE_FORMAT_RGTC2_SNORM } },
688
689 { { o(EXT_texture_compression_latc) },
690 { PIPE_FORMAT_LATC1_UNORM,
691 PIPE_FORMAT_LATC1_SNORM,
692 PIPE_FORMAT_LATC2_UNORM,
693 PIPE_FORMAT_LATC2_SNORM } },
694
695 { { o(EXT_texture_compression_s3tc),
696 o(ANGLE_texture_compression_dxt) },
697 { PIPE_FORMAT_DXT1_RGB,
698 PIPE_FORMAT_DXT1_RGBA,
699 PIPE_FORMAT_DXT3_RGBA,
700 PIPE_FORMAT_DXT5_RGBA } },
701
702 { { o(ARB_texture_compression_bptc) },
703 { PIPE_FORMAT_BPTC_RGBA_UNORM,
704 PIPE_FORMAT_BPTC_SRGBA,
705 PIPE_FORMAT_BPTC_RGB_FLOAT,
706 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
707
708 { { o(KHR_texture_compression_astc_ldr) },
709 { PIPE_FORMAT_ASTC_4x4,
710 PIPE_FORMAT_ASTC_5x4,
711 PIPE_FORMAT_ASTC_5x5,
712 PIPE_FORMAT_ASTC_6x5,
713 PIPE_FORMAT_ASTC_6x6,
714 PIPE_FORMAT_ASTC_8x5,
715 PIPE_FORMAT_ASTC_8x6,
716 PIPE_FORMAT_ASTC_8x8,
717 PIPE_FORMAT_ASTC_10x5,
718 PIPE_FORMAT_ASTC_10x6,
719 PIPE_FORMAT_ASTC_10x8,
720 PIPE_FORMAT_ASTC_10x10,
721 PIPE_FORMAT_ASTC_12x10,
722 PIPE_FORMAT_ASTC_12x12,
723 PIPE_FORMAT_ASTC_4x4_SRGB,
724 PIPE_FORMAT_ASTC_5x4_SRGB,
725 PIPE_FORMAT_ASTC_5x5_SRGB,
726 PIPE_FORMAT_ASTC_6x5_SRGB,
727 PIPE_FORMAT_ASTC_6x6_SRGB,
728 PIPE_FORMAT_ASTC_8x5_SRGB,
729 PIPE_FORMAT_ASTC_8x6_SRGB,
730 PIPE_FORMAT_ASTC_8x8_SRGB,
731 PIPE_FORMAT_ASTC_10x5_SRGB,
732 PIPE_FORMAT_ASTC_10x6_SRGB,
733 PIPE_FORMAT_ASTC_10x8_SRGB,
734 PIPE_FORMAT_ASTC_10x10_SRGB,
735 PIPE_FORMAT_ASTC_12x10_SRGB,
736 PIPE_FORMAT_ASTC_12x12_SRGB } },
737
738 { { o(EXT_texture_shared_exponent) },
739 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
740
741 { { o(EXT_texture_snorm) },
742 { PIPE_FORMAT_R8G8B8A8_SNORM } },
743
744 { { o(EXT_texture_sRGB),
745 o(EXT_texture_sRGB_decode) },
746 { PIPE_FORMAT_A8B8G8R8_SRGB,
747 PIPE_FORMAT_B8G8R8A8_SRGB },
748 GL_TRUE }, /* at least one format must be supported */
749
750 { { o(ATI_texture_compression_3dc) },
751 { PIPE_FORMAT_LATC2_UNORM } },
752
753 { { o(MESA_ycbcr_texture) },
754 { PIPE_FORMAT_UYVY,
755 PIPE_FORMAT_YUYV },
756 GL_TRUE }, /* at least one format must be supported */
757
758 { { o(OES_compressed_ETC1_RGB8_texture) },
759 { PIPE_FORMAT_ETC1_RGB8,
760 PIPE_FORMAT_R8G8B8A8_UNORM },
761 GL_TRUE }, /* at least one format must be supported */
762
763 { { o(ARB_stencil_texturing),
764 o(ARB_texture_stencil8) },
765 { PIPE_FORMAT_X24S8_UINT,
766 PIPE_FORMAT_S8X24_UINT },
767 GL_TRUE }, /* at least one format must be supported */
768 };
769
770 /* Required: vertex fetch support. */
771 static const struct st_extension_format_mapping vertex_mapping[] = {
772 { { o(ARB_vertex_type_2_10_10_10_rev) },
773 { PIPE_FORMAT_R10G10B10A2_UNORM,
774 PIPE_FORMAT_B10G10R10A2_UNORM,
775 PIPE_FORMAT_R10G10B10A2_SNORM,
776 PIPE_FORMAT_B10G10R10A2_SNORM,
777 PIPE_FORMAT_R10G10B10A2_USCALED,
778 PIPE_FORMAT_B10G10R10A2_USCALED,
779 PIPE_FORMAT_R10G10B10A2_SSCALED,
780 PIPE_FORMAT_B10G10R10A2_SSCALED } },
781 { { o(ARB_vertex_type_10f_11f_11f_rev) },
782 { PIPE_FORMAT_R11G11B10_FLOAT } },
783 };
784
785 static const struct st_extension_format_mapping tbo_rgb32[] = {
786 { {o(ARB_texture_buffer_object_rgb32) },
787 { PIPE_FORMAT_R32G32B32_FLOAT,
788 PIPE_FORMAT_R32G32B32_UINT,
789 PIPE_FORMAT_R32G32B32_SINT,
790 } },
791 };
792
793 /*
794 * Extensions that are supported by all Gallium drivers:
795 */
796 extensions->ARB_ES2_compatibility = GL_TRUE;
797 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
798 extensions->ARB_explicit_attrib_location = GL_TRUE;
799 extensions->ARB_explicit_uniform_location = GL_TRUE;
800 extensions->ARB_fragment_coord_conventions = GL_TRUE;
801 extensions->ARB_fragment_program = GL_TRUE;
802 extensions->ARB_fragment_shader = GL_TRUE;
803 extensions->ARB_half_float_vertex = GL_TRUE;
804 extensions->ARB_internalformat_query = GL_TRUE;
805 extensions->ARB_internalformat_query2 = GL_TRUE;
806 extensions->ARB_map_buffer_range = GL_TRUE;
807 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
808 extensions->ARB_texture_cube_map = GL_TRUE;
809 extensions->ARB_texture_env_combine = GL_TRUE;
810 extensions->ARB_texture_env_crossbar = GL_TRUE;
811 extensions->ARB_texture_env_dot3 = GL_TRUE;
812 extensions->ARB_vertex_program = GL_TRUE;
813 extensions->ARB_vertex_shader = GL_TRUE;
814
815 extensions->EXT_blend_color = GL_TRUE;
816 extensions->EXT_blend_func_separate = GL_TRUE;
817 extensions->EXT_blend_minmax = GL_TRUE;
818 extensions->EXT_gpu_program_parameters = GL_TRUE;
819 extensions->EXT_pixel_buffer_object = GL_TRUE;
820 extensions->EXT_point_parameters = GL_TRUE;
821 extensions->EXT_provoking_vertex = GL_TRUE;
822
823 extensions->EXT_texture_env_dot3 = GL_TRUE;
824 extensions->EXT_vertex_array_bgra = GL_TRUE;
825
826 extensions->ATI_fragment_shader = GL_TRUE;
827 extensions->ATI_texture_env_combine3 = GL_TRUE;
828
829 extensions->MESA_pack_invert = GL_TRUE;
830
831 extensions->NV_fog_distance = GL_TRUE;
832 extensions->NV_texture_env_combine4 = GL_TRUE;
833 extensions->NV_texture_rectangle = GL_TRUE;
834
835 extensions->OES_EGL_image = GL_TRUE;
836 extensions->OES_EGL_image_external = GL_TRUE;
837 extensions->OES_draw_texture = GL_TRUE;
838
839 /* Expose the extensions which directly correspond to gallium caps. */
840 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
841 if (screen->get_param(screen, cap_mapping[i].cap)) {
842 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
843 }
844 }
845
846 /* Expose the extensions which directly correspond to gallium formats. */
847 init_format_extensions(screen, extensions, rendertarget_mapping,
848 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
849 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
850 init_format_extensions(screen, extensions, depthstencil_mapping,
851 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
852 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
853 init_format_extensions(screen, extensions, texture_mapping,
854 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
855 PIPE_BIND_SAMPLER_VIEW);
856 init_format_extensions(screen, extensions, vertex_mapping,
857 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
858 PIPE_BIND_VERTEX_BUFFER);
859
860 /* Figure out GLSL support and set GLSLVersion to it. */
861 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
862
863 _mesa_override_glsl_version(consts);
864
865 if (options->force_glsl_version > 0 &&
866 options->force_glsl_version <= consts->GLSLVersion) {
867 consts->ForceGLSLVersion = options->force_glsl_version;
868 }
869
870 if (consts->GLSLVersion >= 400)
871 extensions->ARB_gpu_shader5 = GL_TRUE;
872 if (consts->GLSLVersion >= 410)
873 extensions->ARB_shader_precision = GL_TRUE;
874
875 /* This extension needs full OpenGL 3.2, but we don't know if that's
876 * supported at this point. Only check the GLSL version. */
877 if (consts->GLSLVersion >= 150 &&
878 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
879 extensions->AMD_vertex_shader_layer = GL_TRUE;
880 }
881
882 if (consts->GLSLVersion >= 130) {
883 consts->NativeIntegers = GL_TRUE;
884 consts->MaxClipPlanes = 8;
885
886 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
887 consts->VertexID_is_zero_based = GL_TRUE;
888 }
889
890 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
891 extensions->ARB_conservative_depth = GL_TRUE;
892 extensions->ARB_shading_language_packing = GL_TRUE;
893 extensions->OES_depth_texture_cube_map = GL_TRUE;
894 extensions->ARB_shading_language_420pack = GL_TRUE;
895 extensions->ARB_texture_query_levels = GL_TRUE;
896 extensions->ARB_shader_subroutine = GL_TRUE;
897
898 if (!options->disable_shader_bit_encoding) {
899 extensions->ARB_shader_bit_encoding = GL_TRUE;
900 }
901
902 extensions->EXT_shader_integer_mix = GL_TRUE;
903 extensions->ARB_arrays_of_arrays = GL_TRUE;
904 } else {
905 /* Optional integer support for GLSL 1.2. */
906 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
907 PIPE_SHADER_CAP_INTEGERS) &&
908 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
909 PIPE_SHADER_CAP_INTEGERS)) {
910 consts->NativeIntegers = GL_TRUE;
911
912 extensions->EXT_shader_integer_mix = GL_TRUE;
913 }
914
915 /* Integer textures make no sense before GLSL 1.30 */
916 extensions->EXT_texture_integer = GL_FALSE;
917 }
918
919 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
920
921 /* Below are the cases which cannot be moved into tables easily. */
922
923 if (!has_lib_dxtc && !options->force_s3tc_enable) {
924 extensions->EXT_texture_compression_s3tc = GL_FALSE;
925 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
926 }
927
928 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
929 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
930 extensions->ARB_tessellation_shader = GL_TRUE;
931 }
932
933 if (screen->fence_finish) {
934 extensions->ARB_sync = GL_TRUE;
935 }
936
937 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
938 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
939 */
940 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
941 extensions->ARB_gpu_shader5;
942
943 /* If we don't have native ETC2 support, we don't keep track of the
944 * original ETC2 data. This is necessary to be able to copy images between
945 * compatible view classes.
946 */
947 if (extensions->ARB_copy_image && screen->is_format_supported(
948 screen, PIPE_FORMAT_ETC2_RGB8,
949 PIPE_TEXTURE_2D, 0,
950 PIPE_BIND_SAMPLER_VIEW)) {
951 extensions->OES_copy_image = GL_TRUE;
952 }
953
954 /* Maximum sample count. */
955 {
956 enum pipe_format color_formats[] = {
957 PIPE_FORMAT_R8G8B8A8_UNORM,
958 PIPE_FORMAT_B8G8R8A8_UNORM,
959 PIPE_FORMAT_A8R8G8B8_UNORM,
960 PIPE_FORMAT_A8B8G8R8_UNORM,
961 };
962 enum pipe_format depth_formats[] = {
963 PIPE_FORMAT_Z16_UNORM,
964 PIPE_FORMAT_Z24X8_UNORM,
965 PIPE_FORMAT_X8Z24_UNORM,
966 PIPE_FORMAT_Z32_UNORM,
967 PIPE_FORMAT_Z32_FLOAT
968 };
969 enum pipe_format int_formats[] = {
970 PIPE_FORMAT_R8G8B8A8_SINT
971 };
972 enum pipe_format void_formats[] = {
973 PIPE_FORMAT_NONE
974 };
975
976 consts->MaxSamples =
977 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
978 color_formats, 16,
979 PIPE_BIND_RENDER_TARGET);
980
981 consts->MaxColorTextureSamples =
982 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
983 color_formats, consts->MaxSamples,
984 PIPE_BIND_SAMPLER_VIEW);
985
986 consts->MaxDepthTextureSamples =
987 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
988 depth_formats, consts->MaxSamples,
989 PIPE_BIND_SAMPLER_VIEW);
990
991 consts->MaxIntegerSamples =
992 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
993 int_formats, consts->MaxSamples,
994 PIPE_BIND_SAMPLER_VIEW);
995
996 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
997 consts->MaxFramebufferSamples =
998 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
999 void_formats, 32,
1000 PIPE_BIND_RENDER_TARGET);
1001 }
1002 if (consts->MaxSamples == 1) {
1003 /* one sample doesn't really make sense */
1004 consts->MaxSamples = 0;
1005 }
1006 else if (consts->MaxSamples >= 2) {
1007 extensions->EXT_framebuffer_multisample = GL_TRUE;
1008 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1009 }
1010
1011 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1012 consts->FakeSWMSAA = GL_TRUE;
1013 extensions->EXT_framebuffer_multisample = GL_TRUE;
1014 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1015 extensions->ARB_texture_multisample = GL_TRUE;
1016 }
1017
1018 if (consts->MaxDualSourceDrawBuffers > 0 &&
1019 !options->disable_blend_func_extended)
1020 extensions->ARB_blend_func_extended = GL_TRUE;
1021
1022 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1023 extensions->ARB_timer_query) {
1024 extensions->EXT_timer_query = GL_TRUE;
1025 }
1026
1027 if (extensions->ARB_transform_feedback2 &&
1028 extensions->ARB_draw_instanced) {
1029 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1030 }
1031 if (options->force_glsl_extensions_warn)
1032 consts->ForceGLSLExtensionsWarn = 1;
1033
1034 if (options->disable_glsl_line_continuations)
1035 consts->DisableGLSLLineContinuations = 1;
1036
1037 if (options->allow_glsl_extension_directive_midshader)
1038 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1039
1040 consts->MinMapBufferAlignment =
1041 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1042
1043 if (extensions->ARB_texture_buffer_object) {
1044 consts->MaxTextureBufferSize =
1045 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1046 (1u << 31) - 1);
1047 consts->TextureBufferOffsetAlignment =
1048 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1049
1050 if (consts->TextureBufferOffsetAlignment)
1051 extensions->ARB_texture_buffer_range = GL_TRUE;
1052
1053 init_format_extensions(screen, extensions, tbo_rgb32,
1054 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1055 PIPE_BIND_SAMPLER_VIEW);
1056 }
1057
1058 extensions->OES_texture_buffer =
1059 extensions->ARB_texture_buffer_object &&
1060 extensions->ARB_texture_buffer_range &&
1061 extensions->ARB_texture_buffer_object_rgb32 &&
1062 extensions->ARB_shader_image_load_store;
1063
1064 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1065 * If the number of available texture indirections is very limited, then we
1066 * prefer to disable varying packing rather than run the risk of varying
1067 * packing preventing a shader from running.
1068 */
1069 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1070 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1071 /* We can't disable varying packing if transform feedback is available,
1072 * because transform feedback code assumes a packed varying layout.
1073 */
1074 if (!extensions->EXT_transform_feedback)
1075 consts->DisableVaryingPacking = GL_TRUE;
1076 }
1077
1078 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1079 if (consts->MaxViewports >= 16) {
1080 if (consts->GLSLVersion >= 400) {
1081 consts->ViewportBounds.Min = -32768.0;
1082 consts->ViewportBounds.Max = 32767.0;
1083 } else {
1084 consts->ViewportBounds.Min = -16384.0;
1085 consts->ViewportBounds.Max = 16383.0;
1086 }
1087 extensions->ARB_viewport_array = GL_TRUE;
1088 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1089 if (extensions->AMD_vertex_shader_layer)
1090 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1091 }
1092
1093 /* ARB_framebuffer_no_attachments */
1094 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1095 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1096 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1097 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1098 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1099
1100 /* GL_ARB_ES3_compatibility.
1101 *
1102 * Assume that ES3 is supported if GLSL 3.30 is supported.
1103 * (OpenGL 3.3 is a requirement for that extension.)
1104 */
1105 if (consts->GLSLVersion >= 330 &&
1106 /* Requirements for ETC2 emulation. */
1107 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1108 PIPE_TEXTURE_2D, 0,
1109 PIPE_BIND_SAMPLER_VIEW) &&
1110 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1111 PIPE_TEXTURE_2D, 0,
1112 PIPE_BIND_SAMPLER_VIEW) &&
1113 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1114 PIPE_TEXTURE_2D, 0,
1115 PIPE_BIND_SAMPLER_VIEW) &&
1116 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1117 PIPE_TEXTURE_2D, 0,
1118 PIPE_BIND_SAMPLER_VIEW) &&
1119 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1120 PIPE_TEXTURE_2D, 0,
1121 PIPE_BIND_SAMPLER_VIEW) &&
1122 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1123 PIPE_TEXTURE_2D, 0,
1124 PIPE_BIND_SAMPLER_VIEW)) {
1125 extensions->ARB_ES3_compatibility = GL_TRUE;
1126 }
1127
1128 #ifdef HAVE_ST_VDPAU
1129 if (screen->get_video_param &&
1130 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1131 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1132 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1133 extensions->NV_vdpau_interop = GL_TRUE;
1134 }
1135 #endif
1136
1137 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1138 PIPE_SHADER_CAP_DOUBLES) &&
1139 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1140 PIPE_SHADER_CAP_DOUBLES)) {
1141 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1142 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1143 }
1144
1145 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1146 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1147 extensions->GREMEDY_string_marker = GL_TRUE;
1148
1149 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1150 int compute_supported_irs =
1151 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1152 PIPE_SHADER_CAP_SUPPORTED_IRS);
1153 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1154 uint64_t grid_size[3], block_size[3];
1155 uint64_t max_local_size, max_threads_per_block;
1156
1157 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1158 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1159 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1160 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1161 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1162 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1163 &max_threads_per_block);
1164 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1165 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1166 &max_local_size);
1167
1168 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1169 consts->MaxComputeSharedMemorySize = max_local_size;
1170
1171 for (i = 0; i < 3; i++) {
1172 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1173 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1174 }
1175
1176 extensions->ARB_compute_shader =
1177 extensions->ARB_shader_image_load_store &&
1178 extensions->ARB_shader_atomic_counters;
1179 }
1180 }
1181 }