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st/mesa: Enable MESA_shader_integer_functions on all GLSL 1.30 platforms
[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->LowerCsDerivedVariables = true;
318 c->PrimitiveRestartForPatches =
319 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
320
321 c->MaxCombinedTextureImageUnits =
322 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
323 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
324 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
325 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
326 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
327 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
328 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
329
330 /* This depends on program constants. */
331 c->MaxTextureCoordUnits
332 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
333 MAX_TEXTURE_COORD_UNITS);
334
335 c->MaxTextureUnits =
336 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
337 c->MaxTextureCoordUnits);
338
339 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
340 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
341
342 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
343 * of inputs. It's always 2 colors + N generic inputs. */
344 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
345 PIPE_SHADER_CAP_MAX_INPUTS);
346 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
347 c->MaxGeometryOutputVertices =
348 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
349 c->MaxGeometryTotalOutputComponents =
350 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
351 c->MaxTessPatchComponents =
352 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
353 MAX_VARYING) * 4;
354
355 c->MinProgramTexelOffset =
356 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
357 c->MaxProgramTexelOffset =
358 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
359
360 c->MaxProgramTextureGatherComponents =
361 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
362 c->MinProgramTextureGatherOffset =
363 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
364 c->MaxProgramTextureGatherOffset =
365 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
366
367 c->MaxTransformFeedbackBuffers =
368 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
369 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
370 MAX_FEEDBACK_BUFFERS);
371 c->MaxTransformFeedbackSeparateComponents =
372 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
373 c->MaxTransformFeedbackInterleavedComponents =
374 screen->get_param(screen,
375 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
376 c->MaxVertexStreams =
377 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
378
379 /* The vertex stream must fit into pipe_stream_output_info::stream */
380 assert(c->MaxVertexStreams <= 4);
381
382 c->MaxVertexAttribStride
383 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
384
385 c->StripTextureBorder = GL_TRUE;
386
387 c->GLSLSkipStrictMaxUniformLimitCheck =
388 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
389
390 c->UniformBufferOffsetAlignment =
391 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
392
393 if (can_ubo) {
394 extensions->ARB_uniform_buffer_object = GL_TRUE;
395 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
396 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
397 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
398 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
399 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
400 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
401 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
402 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
403 }
404
405 c->GLSLFragCoordIsSysVal =
406 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
407 c->GLSLFrontFacingIsSysVal =
408 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
409
410 c->MaxAtomicBufferBindings =
411 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
412 c->MaxCombinedAtomicBuffers =
413 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
414 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
415 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
416 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
417 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
418 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
419
420 if (c->MaxCombinedAtomicBuffers > 0) {
421 extensions->ARB_shader_atomic_counters = GL_TRUE;
422 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
423 }
424
425 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
426 c->ShaderStorageBufferOffsetAlignment =
427 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
428 if (c->ShaderStorageBufferOffsetAlignment) {
429 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
430 c->MaxCombinedAtomicBuffers;
431 c->MaxCombinedShaderOutputResources +=
432 c->MaxCombinedShaderStorageBlocks;
433 c->MaxShaderStorageBlockSize = 1 << 27;
434 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
435 }
436
437 c->MaxCombinedImageUniforms =
438 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
439 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
440 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
441 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
442 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
443 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
444 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
445 c->MaxImageUnits = MAX_IMAGE_UNITS;
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 c->MaxWindowRectangles =
464 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
465 }
466
467
468 /**
469 * Given a member \c x of struct gl_extensions, return offset of
470 * \c x in bytes.
471 */
472 #define o(x) offsetof(struct gl_extensions, x)
473
474
475 struct st_extension_cap_mapping {
476 int extension_offset;
477 int cap;
478 };
479
480 struct st_extension_format_mapping {
481 int extension_offset[2];
482 enum pipe_format format[32];
483
484 /* If TRUE, at least one format must be supported for the extensions to be
485 * advertised. If FALSE, all the formats must be supported. */
486 GLboolean need_at_least_one;
487 };
488
489 /**
490 * Enable extensions if certain pipe formats are supported by the driver.
491 * What extensions will be enabled and what formats must be supported is
492 * described by the array of st_extension_format_mapping.
493 *
494 * target and bind_flags are passed to is_format_supported.
495 */
496 static void
497 init_format_extensions(struct pipe_screen *screen,
498 struct gl_extensions *extensions,
499 const struct st_extension_format_mapping *mapping,
500 unsigned num_mappings,
501 enum pipe_texture_target target,
502 unsigned bind_flags)
503 {
504 GLboolean *extension_table = (GLboolean *) extensions;
505 unsigned i;
506 int j;
507 int num_formats = ARRAY_SIZE(mapping->format);
508 int num_ext = ARRAY_SIZE(mapping->extension_offset);
509
510 for (i = 0; i < num_mappings; i++) {
511 int num_supported = 0;
512
513 /* Examine each format in the list. */
514 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
515 if (screen->is_format_supported(screen, mapping[i].format[j],
516 target, 0, bind_flags)) {
517 num_supported++;
518 }
519 }
520
521 if (!num_supported ||
522 (!mapping[i].need_at_least_one && num_supported != j)) {
523 continue;
524 }
525
526 /* Enable all extensions in the list. */
527 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
528 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
529 }
530 }
531
532
533 /**
534 * Given a list of formats and bind flags, return the maximum number
535 * of samples supported by any of those formats.
536 */
537 static unsigned
538 get_max_samples_for_formats(struct pipe_screen *screen,
539 unsigned num_formats,
540 enum pipe_format *formats,
541 unsigned max_samples,
542 unsigned bind)
543 {
544 unsigned i, f;
545
546 for (i = max_samples; i > 0; --i) {
547 for (f = 0; f < num_formats; f++) {
548 if (screen->is_format_supported(screen, formats[f],
549 PIPE_TEXTURE_2D, i, bind)) {
550 return i;
551 }
552 }
553 }
554 return 0;
555 }
556
557
558 /**
559 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
560 * which GL extensions are supported.
561 * Quite a few extensions are always supported because they are standard
562 * features or can be built on top of other gallium features.
563 * Some fine tuning may still be needed.
564 */
565 void st_init_extensions(struct pipe_screen *screen,
566 struct gl_constants *consts,
567 struct gl_extensions *extensions,
568 struct st_config_options *options,
569 boolean has_lib_dxtc)
570 {
571 unsigned i;
572 GLboolean *extension_table = (GLboolean *) extensions;
573
574 static const struct st_extension_cap_mapping cap_mapping[] = {
575 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
576 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
577 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
578 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
579 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
580 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
581 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
582 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
583 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
584 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
585 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
586 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
587 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
588 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
589 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
590 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
591 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
592 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
593 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
594 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
595 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
596 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
597 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
598 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
599 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
600 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
601 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
602 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
603 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
604 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
605 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
606 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
607 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
608 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
609 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
610 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
611 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
612 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
613 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
614 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
615 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
616 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
617 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
618
619 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
620 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
621 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
622 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
623 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
624 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
625 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
626 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
627 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
628 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
629 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
630
631 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
632 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
633 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
634 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
635 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
636 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
637 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
638 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
639 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
640 /* GL_NV_point_sprite is not supported by gallium because we don't
641 * support the GL_POINT_SPRITE_R_MODE_NV option. */
642
643 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
644 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
645 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
646 };
647
648 /* Required: render target and sampler support */
649 static const struct st_extension_format_mapping rendertarget_mapping[] = {
650 { { o(ARB_texture_float) },
651 { PIPE_FORMAT_R32G32B32A32_FLOAT,
652 PIPE_FORMAT_R16G16B16A16_FLOAT } },
653
654 { { o(OES_texture_float) },
655 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
656
657 { { o(OES_texture_half_float) },
658 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
659
660 { { o(ARB_texture_rgb10_a2ui) },
661 { PIPE_FORMAT_R10G10B10A2_UINT,
662 PIPE_FORMAT_B10G10R10A2_UINT },
663 GL_TRUE }, /* at least one format must be supported */
664
665 { { o(EXT_framebuffer_sRGB) },
666 { PIPE_FORMAT_A8B8G8R8_SRGB,
667 PIPE_FORMAT_B8G8R8A8_SRGB },
668 GL_TRUE }, /* at least one format must be supported */
669
670 { { o(EXT_packed_float) },
671 { PIPE_FORMAT_R11G11B10_FLOAT } },
672
673 { { o(EXT_texture_integer) },
674 { PIPE_FORMAT_R32G32B32A32_UINT,
675 PIPE_FORMAT_R32G32B32A32_SINT } },
676
677 { { o(ARB_texture_rg) },
678 { PIPE_FORMAT_R8_UNORM,
679 PIPE_FORMAT_R8G8_UNORM } },
680 };
681
682 /* Required: depth stencil and sampler support */
683 static const struct st_extension_format_mapping depthstencil_mapping[] = {
684 { { o(ARB_depth_buffer_float) },
685 { PIPE_FORMAT_Z32_FLOAT,
686 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
687 };
688
689 /* Required: sampler support */
690 static const struct st_extension_format_mapping texture_mapping[] = {
691 { { o(ARB_texture_compression_rgtc) },
692 { PIPE_FORMAT_RGTC1_UNORM,
693 PIPE_FORMAT_RGTC1_SNORM,
694 PIPE_FORMAT_RGTC2_UNORM,
695 PIPE_FORMAT_RGTC2_SNORM } },
696
697 { { o(EXT_texture_compression_latc) },
698 { PIPE_FORMAT_LATC1_UNORM,
699 PIPE_FORMAT_LATC1_SNORM,
700 PIPE_FORMAT_LATC2_UNORM,
701 PIPE_FORMAT_LATC2_SNORM } },
702
703 { { o(EXT_texture_compression_s3tc),
704 o(ANGLE_texture_compression_dxt) },
705 { PIPE_FORMAT_DXT1_RGB,
706 PIPE_FORMAT_DXT1_RGBA,
707 PIPE_FORMAT_DXT3_RGBA,
708 PIPE_FORMAT_DXT5_RGBA } },
709
710 { { o(ARB_texture_compression_bptc) },
711 { PIPE_FORMAT_BPTC_RGBA_UNORM,
712 PIPE_FORMAT_BPTC_SRGBA,
713 PIPE_FORMAT_BPTC_RGB_FLOAT,
714 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
715
716 { { o(KHR_texture_compression_astc_ldr) },
717 { PIPE_FORMAT_ASTC_4x4,
718 PIPE_FORMAT_ASTC_5x4,
719 PIPE_FORMAT_ASTC_5x5,
720 PIPE_FORMAT_ASTC_6x5,
721 PIPE_FORMAT_ASTC_6x6,
722 PIPE_FORMAT_ASTC_8x5,
723 PIPE_FORMAT_ASTC_8x6,
724 PIPE_FORMAT_ASTC_8x8,
725 PIPE_FORMAT_ASTC_10x5,
726 PIPE_FORMAT_ASTC_10x6,
727 PIPE_FORMAT_ASTC_10x8,
728 PIPE_FORMAT_ASTC_10x10,
729 PIPE_FORMAT_ASTC_12x10,
730 PIPE_FORMAT_ASTC_12x12,
731 PIPE_FORMAT_ASTC_4x4_SRGB,
732 PIPE_FORMAT_ASTC_5x4_SRGB,
733 PIPE_FORMAT_ASTC_5x5_SRGB,
734 PIPE_FORMAT_ASTC_6x5_SRGB,
735 PIPE_FORMAT_ASTC_6x6_SRGB,
736 PIPE_FORMAT_ASTC_8x5_SRGB,
737 PIPE_FORMAT_ASTC_8x6_SRGB,
738 PIPE_FORMAT_ASTC_8x8_SRGB,
739 PIPE_FORMAT_ASTC_10x5_SRGB,
740 PIPE_FORMAT_ASTC_10x6_SRGB,
741 PIPE_FORMAT_ASTC_10x8_SRGB,
742 PIPE_FORMAT_ASTC_10x10_SRGB,
743 PIPE_FORMAT_ASTC_12x10_SRGB,
744 PIPE_FORMAT_ASTC_12x12_SRGB } },
745
746 { { o(EXT_texture_shared_exponent) },
747 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
748
749 { { o(EXT_texture_snorm) },
750 { PIPE_FORMAT_R8G8B8A8_SNORM } },
751
752 { { o(EXT_texture_sRGB),
753 o(EXT_texture_sRGB_decode) },
754 { PIPE_FORMAT_A8B8G8R8_SRGB,
755 PIPE_FORMAT_B8G8R8A8_SRGB },
756 GL_TRUE }, /* at least one format must be supported */
757
758 { { o(ATI_texture_compression_3dc) },
759 { PIPE_FORMAT_LATC2_UNORM } },
760
761 { { o(MESA_ycbcr_texture) },
762 { PIPE_FORMAT_UYVY,
763 PIPE_FORMAT_YUYV },
764 GL_TRUE }, /* at least one format must be supported */
765
766 { { o(OES_compressed_ETC1_RGB8_texture) },
767 { PIPE_FORMAT_ETC1_RGB8,
768 PIPE_FORMAT_R8G8B8A8_UNORM },
769 GL_TRUE }, /* at least one format must be supported */
770
771 { { o(ARB_stencil_texturing),
772 o(ARB_texture_stencil8) },
773 { PIPE_FORMAT_X24S8_UINT,
774 PIPE_FORMAT_S8X24_UINT },
775 GL_TRUE }, /* at least one format must be supported */
776 };
777
778 /* Required: vertex fetch support. */
779 static const struct st_extension_format_mapping vertex_mapping[] = {
780 { { o(EXT_vertex_array_bgra) },
781 { PIPE_FORMAT_B8G8R8A8_UNORM } },
782 { { o(ARB_vertex_type_2_10_10_10_rev) },
783 { PIPE_FORMAT_R10G10B10A2_UNORM,
784 PIPE_FORMAT_B10G10R10A2_UNORM,
785 PIPE_FORMAT_R10G10B10A2_SNORM,
786 PIPE_FORMAT_B10G10R10A2_SNORM,
787 PIPE_FORMAT_R10G10B10A2_USCALED,
788 PIPE_FORMAT_B10G10R10A2_USCALED,
789 PIPE_FORMAT_R10G10B10A2_SSCALED,
790 PIPE_FORMAT_B10G10R10A2_SSCALED } },
791 { { o(ARB_vertex_type_10f_11f_11f_rev) },
792 { PIPE_FORMAT_R11G11B10_FLOAT } },
793 };
794
795 static const struct st_extension_format_mapping tbo_rgb32[] = {
796 { {o(ARB_texture_buffer_object_rgb32) },
797 { PIPE_FORMAT_R32G32B32_FLOAT,
798 PIPE_FORMAT_R32G32B32_UINT,
799 PIPE_FORMAT_R32G32B32_SINT,
800 } },
801 };
802
803 /*
804 * Extensions that are supported by all Gallium drivers:
805 */
806 extensions->ARB_ES2_compatibility = GL_TRUE;
807 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
808 extensions->ARB_explicit_attrib_location = GL_TRUE;
809 extensions->ARB_explicit_uniform_location = GL_TRUE;
810 extensions->ARB_fragment_coord_conventions = GL_TRUE;
811 extensions->ARB_fragment_program = GL_TRUE;
812 extensions->ARB_fragment_shader = GL_TRUE;
813 extensions->ARB_half_float_vertex = GL_TRUE;
814 extensions->ARB_internalformat_query = GL_TRUE;
815 extensions->ARB_internalformat_query2 = GL_TRUE;
816 extensions->ARB_map_buffer_range = GL_TRUE;
817 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
818 extensions->ARB_texture_cube_map = GL_TRUE;
819 extensions->ARB_texture_env_combine = GL_TRUE;
820 extensions->ARB_texture_env_crossbar = GL_TRUE;
821 extensions->ARB_texture_env_dot3 = GL_TRUE;
822 extensions->ARB_vertex_program = GL_TRUE;
823 extensions->ARB_vertex_shader = GL_TRUE;
824
825 extensions->EXT_blend_color = GL_TRUE;
826 extensions->EXT_blend_func_separate = GL_TRUE;
827 extensions->EXT_blend_minmax = GL_TRUE;
828 extensions->EXT_gpu_program_parameters = GL_TRUE;
829 extensions->EXT_pixel_buffer_object = GL_TRUE;
830 extensions->EXT_point_parameters = GL_TRUE;
831 extensions->EXT_provoking_vertex = GL_TRUE;
832
833 extensions->EXT_texture_env_dot3 = GL_TRUE;
834
835 extensions->ATI_fragment_shader = GL_TRUE;
836 extensions->ATI_texture_env_combine3 = GL_TRUE;
837
838 extensions->MESA_pack_invert = GL_TRUE;
839
840 extensions->NV_fog_distance = GL_TRUE;
841 extensions->NV_texture_env_combine4 = GL_TRUE;
842 extensions->NV_texture_rectangle = GL_TRUE;
843
844 extensions->OES_EGL_image = GL_TRUE;
845 extensions->OES_EGL_image_external = GL_TRUE;
846 extensions->OES_draw_texture = GL_TRUE;
847
848 /* Expose the extensions which directly correspond to gallium caps. */
849 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
850 if (screen->get_param(screen, cap_mapping[i].cap)) {
851 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
852 }
853 }
854
855 /* Expose the extensions which directly correspond to gallium formats. */
856 init_format_extensions(screen, extensions, rendertarget_mapping,
857 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
858 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
859 init_format_extensions(screen, extensions, depthstencil_mapping,
860 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
861 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
862 init_format_extensions(screen, extensions, texture_mapping,
863 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
864 PIPE_BIND_SAMPLER_VIEW);
865 init_format_extensions(screen, extensions, vertex_mapping,
866 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
867 PIPE_BIND_VERTEX_BUFFER);
868
869 /* Figure out GLSL support and set GLSLVersion to it. */
870 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
871
872 _mesa_override_glsl_version(consts);
873
874 if (options->force_glsl_version > 0 &&
875 options->force_glsl_version <= consts->GLSLVersion) {
876 consts->ForceGLSLVersion = options->force_glsl_version;
877 }
878
879 if (consts->GLSLVersion >= 400)
880 extensions->ARB_gpu_shader5 = GL_TRUE;
881 if (consts->GLSLVersion >= 410)
882 extensions->ARB_shader_precision = GL_TRUE;
883
884 /* This extension needs full OpenGL 3.2, but we don't know if that's
885 * supported at this point. Only check the GLSL version. */
886 if (consts->GLSLVersion >= 150 &&
887 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
888 extensions->AMD_vertex_shader_layer = GL_TRUE;
889 }
890
891 if (consts->GLSLVersion >= 130) {
892 consts->NativeIntegers = GL_TRUE;
893 consts->MaxClipPlanes = 8;
894
895 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
896 consts->VertexID_is_zero_based = GL_TRUE;
897 }
898
899 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
900 extensions->ARB_conservative_depth = GL_TRUE;
901 extensions->ARB_shading_language_packing = GL_TRUE;
902 extensions->OES_depth_texture_cube_map = GL_TRUE;
903 extensions->ARB_shading_language_420pack = GL_TRUE;
904 extensions->ARB_texture_query_levels = GL_TRUE;
905 extensions->ARB_shader_subroutine = GL_TRUE;
906
907 if (!options->disable_shader_bit_encoding) {
908 extensions->ARB_shader_bit_encoding = GL_TRUE;
909 }
910
911 extensions->EXT_shader_integer_mix = GL_TRUE;
912 extensions->ARB_arrays_of_arrays = GL_TRUE;
913 extensions->MESA_shader_integer_functions = GL_TRUE;
914 } else {
915 /* Optional integer support for GLSL 1.2. */
916 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
917 PIPE_SHADER_CAP_INTEGERS) &&
918 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
919 PIPE_SHADER_CAP_INTEGERS)) {
920 consts->NativeIntegers = GL_TRUE;
921
922 extensions->EXT_shader_integer_mix = GL_TRUE;
923 }
924
925 /* Integer textures make no sense before GLSL 1.30 */
926 extensions->EXT_texture_integer = GL_FALSE;
927 }
928
929 consts->GLSLZeroInit = options->glsl_zero_init;
930
931 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
932
933 /* Below are the cases which cannot be moved into tables easily. */
934
935 if (!has_lib_dxtc && !options->force_s3tc_enable) {
936 extensions->EXT_texture_compression_s3tc = GL_FALSE;
937 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
938 }
939
940 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
941 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
942 extensions->ARB_tessellation_shader = GL_TRUE;
943 }
944
945 if (screen->fence_finish) {
946 extensions->ARB_sync = GL_TRUE;
947 }
948
949 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
950 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
951 */
952 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
953 extensions->ARB_gpu_shader5;
954
955 /* If we don't have native ETC2 support, we don't keep track of the
956 * original ETC2 data. This is necessary to be able to copy images between
957 * compatible view classes.
958 */
959 if (extensions->ARB_copy_image && screen->is_format_supported(
960 screen, PIPE_FORMAT_ETC2_RGB8,
961 PIPE_TEXTURE_2D, 0,
962 PIPE_BIND_SAMPLER_VIEW)) {
963 extensions->OES_copy_image = GL_TRUE;
964 }
965
966 /* Maximum sample count. */
967 {
968 enum pipe_format color_formats[] = {
969 PIPE_FORMAT_R8G8B8A8_UNORM,
970 PIPE_FORMAT_B8G8R8A8_UNORM,
971 PIPE_FORMAT_A8R8G8B8_UNORM,
972 PIPE_FORMAT_A8B8G8R8_UNORM,
973 };
974 enum pipe_format depth_formats[] = {
975 PIPE_FORMAT_Z16_UNORM,
976 PIPE_FORMAT_Z24X8_UNORM,
977 PIPE_FORMAT_X8Z24_UNORM,
978 PIPE_FORMAT_Z32_UNORM,
979 PIPE_FORMAT_Z32_FLOAT
980 };
981 enum pipe_format int_formats[] = {
982 PIPE_FORMAT_R8G8B8A8_SINT
983 };
984 enum pipe_format void_formats[] = {
985 PIPE_FORMAT_NONE
986 };
987
988 consts->MaxSamples =
989 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
990 color_formats, 16,
991 PIPE_BIND_RENDER_TARGET);
992
993 consts->MaxImageSamples =
994 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
995 color_formats, 16,
996 PIPE_BIND_SHADER_IMAGE);
997
998 consts->MaxColorTextureSamples =
999 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1000 color_formats, consts->MaxSamples,
1001 PIPE_BIND_SAMPLER_VIEW);
1002
1003 consts->MaxDepthTextureSamples =
1004 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1005 depth_formats, consts->MaxSamples,
1006 PIPE_BIND_SAMPLER_VIEW);
1007
1008 consts->MaxIntegerSamples =
1009 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1010 int_formats, consts->MaxSamples,
1011 PIPE_BIND_SAMPLER_VIEW);
1012
1013 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1014 consts->MaxFramebufferSamples =
1015 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1016 void_formats, 32,
1017 PIPE_BIND_RENDER_TARGET);
1018 }
1019 if (consts->MaxSamples == 1) {
1020 /* one sample doesn't really make sense */
1021 consts->MaxSamples = 0;
1022 }
1023 else if (consts->MaxSamples >= 2) {
1024 extensions->EXT_framebuffer_multisample = GL_TRUE;
1025 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1026 }
1027
1028 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1029 consts->FakeSWMSAA = GL_TRUE;
1030 extensions->EXT_framebuffer_multisample = GL_TRUE;
1031 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1032 extensions->ARB_texture_multisample = GL_TRUE;
1033 }
1034
1035 if (consts->MaxDualSourceDrawBuffers > 0 &&
1036 !options->disable_blend_func_extended)
1037 extensions->ARB_blend_func_extended = GL_TRUE;
1038
1039 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1040 extensions->ARB_timer_query) {
1041 extensions->EXT_timer_query = GL_TRUE;
1042 }
1043
1044 if (extensions->ARB_transform_feedback2 &&
1045 extensions->ARB_draw_instanced) {
1046 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1047 }
1048 if (options->force_glsl_extensions_warn)
1049 consts->ForceGLSLExtensionsWarn = 1;
1050
1051 if (options->disable_glsl_line_continuations)
1052 consts->DisableGLSLLineContinuations = 1;
1053
1054 if (options->allow_glsl_extension_directive_midshader)
1055 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1056
1057 consts->MinMapBufferAlignment =
1058 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1059
1060 if (extensions->ARB_texture_buffer_object) {
1061 consts->MaxTextureBufferSize =
1062 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1063 (1u << 31) - 1);
1064 consts->TextureBufferOffsetAlignment =
1065 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1066
1067 if (consts->TextureBufferOffsetAlignment)
1068 extensions->ARB_texture_buffer_range = GL_TRUE;
1069
1070 init_format_extensions(screen, extensions, tbo_rgb32,
1071 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1072 PIPE_BIND_SAMPLER_VIEW);
1073 }
1074
1075 extensions->OES_texture_buffer =
1076 extensions->ARB_texture_buffer_object &&
1077 extensions->ARB_texture_buffer_range &&
1078 extensions->ARB_texture_buffer_object_rgb32 &&
1079 extensions->ARB_shader_image_load_store;
1080
1081 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1082 * If the number of available texture indirections is very limited, then we
1083 * prefer to disable varying packing rather than run the risk of varying
1084 * packing preventing a shader from running.
1085 */
1086 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1087 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1088 /* We can't disable varying packing if transform feedback is available,
1089 * because transform feedback code assumes a packed varying layout.
1090 */
1091 if (!extensions->EXT_transform_feedback)
1092 consts->DisableVaryingPacking = GL_TRUE;
1093 }
1094
1095 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1096 if (consts->MaxViewports >= 16) {
1097 if (consts->GLSLVersion >= 400) {
1098 consts->ViewportBounds.Min = -32768.0;
1099 consts->ViewportBounds.Max = 32767.0;
1100 } else {
1101 consts->ViewportBounds.Min = -16384.0;
1102 consts->ViewportBounds.Max = 16383.0;
1103 }
1104 extensions->ARB_viewport_array = GL_TRUE;
1105 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1106 if (extensions->AMD_vertex_shader_layer)
1107 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1108 }
1109
1110 /* ARB_framebuffer_no_attachments */
1111 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1112 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1113 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1114 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1115 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1116
1117 /* GL_ARB_ES3_compatibility.
1118 *
1119 * Assume that ES3 is supported if GLSL 3.30 is supported.
1120 * (OpenGL 3.3 is a requirement for that extension.)
1121 */
1122 if (consts->GLSLVersion >= 330 &&
1123 /* Requirements for ETC2 emulation. */
1124 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1125 PIPE_TEXTURE_2D, 0,
1126 PIPE_BIND_SAMPLER_VIEW) &&
1127 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1128 PIPE_TEXTURE_2D, 0,
1129 PIPE_BIND_SAMPLER_VIEW) &&
1130 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1131 PIPE_TEXTURE_2D, 0,
1132 PIPE_BIND_SAMPLER_VIEW) &&
1133 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1134 PIPE_TEXTURE_2D, 0,
1135 PIPE_BIND_SAMPLER_VIEW) &&
1136 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1137 PIPE_TEXTURE_2D, 0,
1138 PIPE_BIND_SAMPLER_VIEW) &&
1139 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1140 PIPE_TEXTURE_2D, 0,
1141 PIPE_BIND_SAMPLER_VIEW)) {
1142 extensions->ARB_ES3_compatibility = GL_TRUE;
1143 }
1144
1145 #ifdef HAVE_ST_VDPAU
1146 if (screen->get_video_param &&
1147 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1148 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1149 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1150 extensions->NV_vdpau_interop = GL_TRUE;
1151 }
1152 #endif
1153
1154 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1155 PIPE_SHADER_CAP_DOUBLES) &&
1156 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1157 PIPE_SHADER_CAP_DOUBLES)) {
1158 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1159 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1160 }
1161
1162 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1163 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1164 extensions->GREMEDY_string_marker = GL_TRUE;
1165
1166 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1167 int compute_supported_irs =
1168 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1169 PIPE_SHADER_CAP_SUPPORTED_IRS);
1170 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1171 uint64_t grid_size[3], block_size[3];
1172 uint64_t max_local_size, max_threads_per_block;
1173
1174 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1175 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1176 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1177 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1178 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1179 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1180 &max_threads_per_block);
1181 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1182 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1183 &max_local_size);
1184
1185 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1186 consts->MaxComputeSharedMemorySize = max_local_size;
1187
1188 for (i = 0; i < 3; i++) {
1189 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1190 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1191 }
1192
1193 extensions->ARB_compute_shader =
1194 extensions->ARB_shader_image_load_store &&
1195 extensions->ARB_shader_atomic_counters;
1196 }
1197 }
1198
1199 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1200 * there's no clean way of telling whether we would support ES 3.1 from
1201 * here, so copy the condition from compute_version_es2 here. A lot of
1202 * these are redunant, but simpler to just have a (near-)exact copy here.
1203 */
1204 extensions->ARB_ES3_1_compatibility =
1205 extensions->ARB_ES3_compatibility &&
1206 extensions->ARB_arrays_of_arrays &&
1207 extensions->ARB_compute_shader &&
1208 extensions->ARB_draw_indirect &&
1209 extensions->ARB_explicit_uniform_location &&
1210 extensions->ARB_framebuffer_no_attachments &&
1211 extensions->ARB_shader_atomic_counters &&
1212 extensions->ARB_shader_image_load_store &&
1213 extensions->ARB_shader_image_size &&
1214 extensions->ARB_shader_storage_buffer_object &&
1215 extensions->ARB_shading_language_packing &&
1216 extensions->ARB_stencil_texturing &&
1217 extensions->ARB_texture_multisample &&
1218 extensions->ARB_gpu_shader5 &&
1219 extensions->EXT_shader_integer_mix;
1220
1221 /* And if we have enough for ES 3.1, we can also expose
1222 * OES_shader_io_blocks, which is only hidden due to the compiler not being
1223 * able to version-restrict things.
1224 */
1225 extensions->OES_shader_io_blocks = extensions->ARB_ES3_1_compatibility;
1226 }