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st/mesa: add query buffer support
[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 unsigned sh;
79 boolean can_ubo = TRUE;
80
81 c->MaxTextureLevels
82 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
83 MAX_TEXTURE_LEVELS);
84
85 c->Max3DTextureLevels
86 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
87 MAX_3D_TEXTURE_LEVELS);
88
89 c->MaxCubeTextureLevels
90 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
91 MAX_CUBE_TEXTURE_LEVELS);
92
93 c->MaxTextureRectSize
94 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
95
96 c->MaxArrayTextureLayers
97 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
98
99 /* Define max viewport size and max renderbuffer size in terms of
100 * max texture size (note: max tex RECT size = max tex 2D size).
101 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
102 */
103 c->MaxViewportWidth =
104 c->MaxViewportHeight =
105 c->MaxRenderbufferSize = c->MaxTextureRectSize;
106
107 c->MaxDrawBuffers = c->MaxColorAttachments =
108 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
109 1, MAX_DRAW_BUFFERS);
110
111 c->MaxDualSourceDrawBuffers
112 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
113 0, MAX_DRAW_BUFFERS);
114
115 c->MaxLineWidth
116 = _maxf(1.0f, screen->get_paramf(screen,
117 PIPE_CAPF_MAX_LINE_WIDTH));
118 c->MaxLineWidthAA
119 = _maxf(1.0f, screen->get_paramf(screen,
120 PIPE_CAPF_MAX_LINE_WIDTH_AA));
121
122 c->MaxPointSize
123 = _maxf(1.0f, screen->get_paramf(screen,
124 PIPE_CAPF_MAX_POINT_WIDTH));
125 c->MaxPointSizeAA
126 = _maxf(1.0f, screen->get_paramf(screen,
127 PIPE_CAPF_MAX_POINT_WIDTH_AA));
128
129 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
130 * for non-aa sizes, but we can go down to 0.0 for aa points.
131 */
132 c->MinPointSize = 1.0f;
133 c->MinPointSizeAA = 0.0f;
134
135 c->MaxTextureMaxAnisotropy
136 = _maxf(2.0f, screen->get_paramf(screen,
137 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
138
139 c->MaxTextureLodBias
140 = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
141
142 c->QuadsFollowProvokingVertexConvention = screen->get_param(
143 screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
144
145 c->MaxUniformBlockSize =
146 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
147 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
148 if (c->MaxUniformBlockSize < 16384) {
149 can_ubo = FALSE;
150 }
151
152 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
153 struct gl_shader_compiler_options *options;
154 struct gl_program_constants *pc;
155
156 switch (sh) {
157 case PIPE_SHADER_FRAGMENT:
158 pc = &c->Program[MESA_SHADER_FRAGMENT];
159 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
160 break;
161 case PIPE_SHADER_VERTEX:
162 pc = &c->Program[MESA_SHADER_VERTEX];
163 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
164 break;
165 case PIPE_SHADER_GEOMETRY:
166 pc = &c->Program[MESA_SHADER_GEOMETRY];
167 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
168 break;
169 case PIPE_SHADER_TESS_CTRL:
170 pc = &c->Program[MESA_SHADER_TESS_CTRL];
171 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
172 break;
173 case PIPE_SHADER_TESS_EVAL:
174 pc = &c->Program[MESA_SHADER_TESS_EVAL];
175 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
176 break;
177 default:
178 /* compute shader, etc. */
179 continue;
180 }
181
182 pc->MaxTextureImageUnits =
183 _min(screen->get_shader_param(screen, sh,
184 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
185 MAX_TEXTURE_IMAGE_UNITS);
186
187 pc->MaxInstructions = pc->MaxNativeInstructions =
188 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
189 pc->MaxAluInstructions = pc->MaxNativeAluInstructions =
190 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
191 pc->MaxTexInstructions = pc->MaxNativeTexInstructions =
192 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
193 pc->MaxTexIndirections = pc->MaxNativeTexIndirections =
194 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
195 pc->MaxAttribs = pc->MaxNativeAttribs =
196 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
197 pc->MaxTemps = pc->MaxNativeTemps =
198 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
199 pc->MaxAddressRegs = pc->MaxNativeAddressRegs =
200 sh == PIPE_SHADER_VERTEX ? 1 : 0;
201 pc->MaxParameters = pc->MaxNativeParameters =
202 screen->get_shader_param(screen, sh,
203 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
204 pc->MaxInputComponents =
205 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
206 pc->MaxOutputComponents =
207 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
208
209 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
210
211 pc->MaxUniformBlocks =
212 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
213 if (pc->MaxUniformBlocks)
214 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
215 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
216
217 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
218 c->MaxUniformBlockSize / 4 *
219 pc->MaxUniformBlocks);
220
221 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
222 pc->MaxAtomicBuffers = screen->get_shader_param(
223 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
224 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
225
226 /* Gallium doesn't really care about local vs. env parameters so use the
227 * same limits.
228 */
229 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
230 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
231
232 options->EmitNoNoise = TRUE;
233
234 /* TODO: make these more fine-grained if anyone needs it */
235 options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
236 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
237 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
238 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
239
240 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
241
242 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
243 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
244 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
245 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
246 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
247 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
248 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
249 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
250
251 if (pc->MaxNativeInstructions &&
252 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
253 can_ubo = FALSE;
254 }
255
256 if (options->EmitNoLoops)
257 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
258 else
259 options->MaxUnrollIterations = screen->get_shader_param(screen, sh,
260 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
261
262 options->LowerClipDistance = true;
263 options->LowerBufferInterfaceBlocks = true;
264 }
265
266 c->LowerTessLevel = true;
267
268 c->MaxCombinedTextureImageUnits =
269 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
270 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
271 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
272 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
273 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
274 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
275
276 /* This depends on program constants. */
277 c->MaxTextureCoordUnits
278 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
279
280 c->MaxTextureUnits = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, c->MaxTextureCoordUnits);
281
282 c->Program[MESA_SHADER_VERTEX].MaxAttribs = MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
283
284 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
285 * of inputs. It's always 2 colors + N generic inputs. */
286 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
287 PIPE_SHADER_CAP_MAX_INPUTS);
288 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
289 c->MaxGeometryOutputVertices = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
290 c->MaxGeometryTotalOutputComponents = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
291 c->MaxTessPatchComponents =
292 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
293 MAX_VARYING) * 4;
294
295 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
296 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
297
298 c->MaxProgramTextureGatherComponents = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
299 c->MinProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
300 c->MaxProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
301
302 c->MaxTransformFeedbackBuffers =
303 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
304 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS);
305 c->MaxTransformFeedbackSeparateComponents =
306 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
307 c->MaxTransformFeedbackInterleavedComponents =
308 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
309 c->MaxVertexStreams =
310 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
311
312 /* The vertex stream must fit into pipe_stream_output_info::stream */
313 assert(c->MaxVertexStreams <= 4);
314
315 c->MaxVertexAttribStride
316 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
317
318 c->StripTextureBorder = GL_TRUE;
319
320 c->GLSLSkipStrictMaxUniformLimitCheck =
321 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
322
323 c->UniformBufferOffsetAlignment =
324 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
325
326 if (can_ubo) {
327 extensions->ARB_uniform_buffer_object = GL_TRUE;
328 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
329 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
330 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
331 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
332 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
333 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
334 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
335 }
336
337 c->GLSLFragCoordIsSysVal =
338 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
339 c->GLSLFrontFacingIsSysVal =
340 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
341
342 c->MaxAtomicBufferBindings =
343 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
344 c->MaxCombinedAtomicBuffers =
345 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
346 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
347 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
348 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
349 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
350 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
351
352 if (c->MaxCombinedAtomicBuffers > 0)
353 extensions->ARB_shader_atomic_counters = GL_TRUE;
354
355 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
356 c->ShaderStorageBufferOffsetAlignment =
357 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
358 if (c->ShaderStorageBufferOffsetAlignment) {
359 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
360 c->MaxCombinedAtomicBuffers;
361 c->MaxCombinedShaderOutputResources +=
362 c->MaxCombinedShaderStorageBlocks;
363 c->MaxShaderStorageBlockSize = 1 << 27;
364 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
365 }
366 }
367
368
369 /**
370 * Given a member \c x of struct gl_extensions, return offset of
371 * \c x in bytes.
372 */
373 #define o(x) offsetof(struct gl_extensions, x)
374
375
376 struct st_extension_cap_mapping {
377 int extension_offset;
378 int cap;
379 };
380
381 struct st_extension_format_mapping {
382 int extension_offset[2];
383 enum pipe_format format[32];
384
385 /* If TRUE, at least one format must be supported for the extensions to be
386 * advertised. If FALSE, all the formats must be supported. */
387 GLboolean need_at_least_one;
388 };
389
390 /**
391 * Enable extensions if certain pipe formats are supported by the driver.
392 * What extensions will be enabled and what formats must be supported is
393 * described by the array of st_extension_format_mapping.
394 *
395 * target and bind_flags are passed to is_format_supported.
396 */
397 static void
398 init_format_extensions(struct pipe_screen *screen,
399 struct gl_extensions *extensions,
400 const struct st_extension_format_mapping *mapping,
401 unsigned num_mappings,
402 enum pipe_texture_target target,
403 unsigned bind_flags)
404 {
405 GLboolean *extension_table = (GLboolean *) extensions;
406 unsigned i;
407 int j;
408 int num_formats = ARRAY_SIZE(mapping->format);
409 int num_ext = ARRAY_SIZE(mapping->extension_offset);
410
411 for (i = 0; i < num_mappings; i++) {
412 int num_supported = 0;
413
414 /* Examine each format in the list. */
415 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
416 if (screen->is_format_supported(screen, mapping[i].format[j],
417 target, 0, bind_flags)) {
418 num_supported++;
419 }
420 }
421
422 if (!num_supported ||
423 (!mapping[i].need_at_least_one && num_supported != j)) {
424 continue;
425 }
426
427 /* Enable all extensions in the list. */
428 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
429 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
430 }
431 }
432
433
434 /**
435 * Given a list of formats and bind flags, return the maximum number
436 * of samples supported by any of those formats.
437 */
438 static unsigned
439 get_max_samples_for_formats(struct pipe_screen *screen,
440 unsigned num_formats,
441 enum pipe_format *formats,
442 unsigned max_samples,
443 unsigned bind)
444 {
445 unsigned i, f;
446
447 for (i = max_samples; i > 0; --i) {
448 for (f = 0; f < num_formats; f++) {
449 if (screen->is_format_supported(screen, formats[f],
450 PIPE_TEXTURE_2D, i, bind)) {
451 return i;
452 }
453 }
454 }
455 return 0;
456 }
457
458
459 /**
460 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
461 * which GL extensions are supported.
462 * Quite a few extensions are always supported because they are standard
463 * features or can be built on top of other gallium features.
464 * Some fine tuning may still be needed.
465 */
466 void st_init_extensions(struct pipe_screen *screen,
467 struct gl_constants *consts,
468 struct gl_extensions *extensions,
469 struct st_config_options *options,
470 boolean has_lib_dxtc)
471 {
472 unsigned i;
473 int glsl_feature_level;
474 GLboolean *extension_table = (GLboolean *) extensions;
475
476 static const struct st_extension_cap_mapping cap_mapping[] = {
477 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
478 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
479 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
480 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
481 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
482 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
483 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
484 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
485 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
486 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
487 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
488 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
489 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
490 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
491 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
492 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
493 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
494 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
495 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
496 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
497 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
498 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
499 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
500 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
501 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
502 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
503 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
504 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
505 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
506 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
507 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
508 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
509 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
510 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
511 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
512 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
513 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
514 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
515 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
516 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
517
518 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
519 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
520 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
521 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
522 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
523 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
524 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
525 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
526 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
527 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
528
529 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
530 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
531 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
532 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
533 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
534 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
535 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
536 /* GL_NV_point_sprite is not supported by gallium because we don't
537 * support the GL_POINT_SPRITE_R_MODE_NV option. */
538
539 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
540 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
541 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
542 };
543
544 /* Required: render target and sampler support */
545 static const struct st_extension_format_mapping rendertarget_mapping[] = {
546 { { o(ARB_texture_float) },
547 { PIPE_FORMAT_R32G32B32A32_FLOAT,
548 PIPE_FORMAT_R16G16B16A16_FLOAT } },
549
550 { { o(OES_texture_float) },
551 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
552
553 { { o(OES_texture_half_float) },
554 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
555
556 { { o(ARB_texture_rgb10_a2ui) },
557 { PIPE_FORMAT_R10G10B10A2_UINT,
558 PIPE_FORMAT_B10G10R10A2_UINT },
559 GL_TRUE }, /* at least one format must be supported */
560
561 { { o(EXT_framebuffer_sRGB) },
562 { PIPE_FORMAT_A8B8G8R8_SRGB,
563 PIPE_FORMAT_B8G8R8A8_SRGB },
564 GL_TRUE }, /* at least one format must be supported */
565
566 { { o(EXT_packed_float) },
567 { PIPE_FORMAT_R11G11B10_FLOAT } },
568
569 { { o(EXT_texture_integer) },
570 { PIPE_FORMAT_R32G32B32A32_UINT,
571 PIPE_FORMAT_R32G32B32A32_SINT } },
572
573 { { o(ARB_texture_rg) },
574 { PIPE_FORMAT_R8_UNORM,
575 PIPE_FORMAT_R8G8_UNORM } },
576 };
577
578 /* Required: depth stencil and sampler support */
579 static const struct st_extension_format_mapping depthstencil_mapping[] = {
580 { { o(ARB_depth_buffer_float) },
581 { PIPE_FORMAT_Z32_FLOAT,
582 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
583 };
584
585 /* Required: sampler support */
586 static const struct st_extension_format_mapping texture_mapping[] = {
587 { { o(ARB_texture_compression_rgtc) },
588 { PIPE_FORMAT_RGTC1_UNORM,
589 PIPE_FORMAT_RGTC1_SNORM,
590 PIPE_FORMAT_RGTC2_UNORM,
591 PIPE_FORMAT_RGTC2_SNORM } },
592
593 { { o(EXT_texture_compression_latc) },
594 { PIPE_FORMAT_LATC1_UNORM,
595 PIPE_FORMAT_LATC1_SNORM,
596 PIPE_FORMAT_LATC2_UNORM,
597 PIPE_FORMAT_LATC2_SNORM } },
598
599 { { o(EXT_texture_compression_s3tc),
600 o(ANGLE_texture_compression_dxt) },
601 { PIPE_FORMAT_DXT1_RGB,
602 PIPE_FORMAT_DXT1_RGBA,
603 PIPE_FORMAT_DXT3_RGBA,
604 PIPE_FORMAT_DXT5_RGBA } },
605
606 { { o(ARB_texture_compression_bptc) },
607 { PIPE_FORMAT_BPTC_RGBA_UNORM,
608 PIPE_FORMAT_BPTC_SRGBA,
609 PIPE_FORMAT_BPTC_RGB_FLOAT,
610 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
611
612 { { o(KHR_texture_compression_astc_ldr) },
613 { PIPE_FORMAT_ASTC_4x4,
614 PIPE_FORMAT_ASTC_5x4,
615 PIPE_FORMAT_ASTC_5x5,
616 PIPE_FORMAT_ASTC_6x5,
617 PIPE_FORMAT_ASTC_6x6,
618 PIPE_FORMAT_ASTC_8x5,
619 PIPE_FORMAT_ASTC_8x6,
620 PIPE_FORMAT_ASTC_8x8,
621 PIPE_FORMAT_ASTC_10x5,
622 PIPE_FORMAT_ASTC_10x6,
623 PIPE_FORMAT_ASTC_10x8,
624 PIPE_FORMAT_ASTC_10x10,
625 PIPE_FORMAT_ASTC_12x10,
626 PIPE_FORMAT_ASTC_12x12,
627 PIPE_FORMAT_ASTC_4x4_SRGB,
628 PIPE_FORMAT_ASTC_5x4_SRGB,
629 PIPE_FORMAT_ASTC_5x5_SRGB,
630 PIPE_FORMAT_ASTC_6x5_SRGB,
631 PIPE_FORMAT_ASTC_6x6_SRGB,
632 PIPE_FORMAT_ASTC_8x5_SRGB,
633 PIPE_FORMAT_ASTC_8x6_SRGB,
634 PIPE_FORMAT_ASTC_8x8_SRGB,
635 PIPE_FORMAT_ASTC_10x5_SRGB,
636 PIPE_FORMAT_ASTC_10x6_SRGB,
637 PIPE_FORMAT_ASTC_10x8_SRGB,
638 PIPE_FORMAT_ASTC_10x10_SRGB,
639 PIPE_FORMAT_ASTC_12x10_SRGB,
640 PIPE_FORMAT_ASTC_12x12_SRGB } },
641
642 { { o(EXT_texture_shared_exponent) },
643 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
644
645 { { o(EXT_texture_snorm) },
646 { PIPE_FORMAT_R8G8B8A8_SNORM } },
647
648 { { o(EXT_texture_sRGB),
649 o(EXT_texture_sRGB_decode) },
650 { PIPE_FORMAT_A8B8G8R8_SRGB,
651 PIPE_FORMAT_B8G8R8A8_SRGB },
652 GL_TRUE }, /* at least one format must be supported */
653
654 { { o(ATI_texture_compression_3dc) },
655 { PIPE_FORMAT_LATC2_UNORM } },
656
657 { { o(MESA_ycbcr_texture) },
658 { PIPE_FORMAT_UYVY,
659 PIPE_FORMAT_YUYV },
660 GL_TRUE }, /* at least one format must be supported */
661
662 { { o(OES_compressed_ETC1_RGB8_texture) },
663 { PIPE_FORMAT_ETC1_RGB8,
664 PIPE_FORMAT_R8G8B8A8_UNORM },
665 GL_TRUE }, /* at least one format must be supported */
666
667 { { o(ARB_stencil_texturing),
668 o(ARB_texture_stencil8) },
669 { PIPE_FORMAT_X24S8_UINT,
670 PIPE_FORMAT_S8X24_UINT },
671 GL_TRUE }, /* at least one format must be supported */
672 };
673
674 /* Required: vertex fetch support. */
675 static const struct st_extension_format_mapping vertex_mapping[] = {
676 { { o(ARB_vertex_type_2_10_10_10_rev) },
677 { PIPE_FORMAT_R10G10B10A2_UNORM,
678 PIPE_FORMAT_B10G10R10A2_UNORM,
679 PIPE_FORMAT_R10G10B10A2_SNORM,
680 PIPE_FORMAT_B10G10R10A2_SNORM,
681 PIPE_FORMAT_R10G10B10A2_USCALED,
682 PIPE_FORMAT_B10G10R10A2_USCALED,
683 PIPE_FORMAT_R10G10B10A2_SSCALED,
684 PIPE_FORMAT_B10G10R10A2_SSCALED } },
685 { { o(ARB_vertex_type_10f_11f_11f_rev) },
686 { PIPE_FORMAT_R11G11B10_FLOAT } },
687 };
688
689 static const struct st_extension_format_mapping tbo_rgb32[] = {
690 { {o(ARB_texture_buffer_object_rgb32) },
691 { PIPE_FORMAT_R32G32B32_FLOAT,
692 PIPE_FORMAT_R32G32B32_UINT,
693 PIPE_FORMAT_R32G32B32_SINT,
694 } },
695 };
696
697 /*
698 * Extensions that are supported by all Gallium drivers:
699 */
700 extensions->ARB_ES2_compatibility = GL_TRUE;
701 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
702 extensions->ARB_explicit_attrib_location = GL_TRUE;
703 extensions->ARB_explicit_uniform_location = GL_TRUE;
704 extensions->ARB_fragment_coord_conventions = GL_TRUE;
705 extensions->ARB_fragment_program = GL_TRUE;
706 extensions->ARB_fragment_shader = GL_TRUE;
707 extensions->ARB_half_float_vertex = GL_TRUE;
708 extensions->ARB_internalformat_query = GL_TRUE;
709 extensions->ARB_map_buffer_range = GL_TRUE;
710 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
711 extensions->ARB_texture_cube_map = GL_TRUE;
712 extensions->ARB_texture_env_combine = GL_TRUE;
713 extensions->ARB_texture_env_crossbar = GL_TRUE;
714 extensions->ARB_texture_env_dot3 = GL_TRUE;
715 extensions->ARB_vertex_program = GL_TRUE;
716 extensions->ARB_vertex_shader = GL_TRUE;
717
718 extensions->EXT_blend_color = GL_TRUE;
719 extensions->EXT_blend_func_separate = GL_TRUE;
720 extensions->EXT_blend_minmax = GL_TRUE;
721 extensions->EXT_gpu_program_parameters = GL_TRUE;
722 extensions->EXT_pixel_buffer_object = GL_TRUE;
723 extensions->EXT_point_parameters = GL_TRUE;
724 extensions->EXT_provoking_vertex = GL_TRUE;
725
726 extensions->EXT_texture_env_dot3 = GL_TRUE;
727 extensions->EXT_vertex_array_bgra = GL_TRUE;
728
729 extensions->ATI_texture_env_combine3 = GL_TRUE;
730
731 extensions->MESA_pack_invert = GL_TRUE;
732
733 extensions->NV_fog_distance = GL_TRUE;
734 extensions->NV_texture_env_combine4 = GL_TRUE;
735 extensions->NV_texture_rectangle = GL_TRUE;
736
737 extensions->OES_EGL_image = GL_TRUE;
738 extensions->OES_EGL_image_external = GL_TRUE;
739 extensions->OES_draw_texture = GL_TRUE;
740
741 /* Expose the extensions which directly correspond to gallium caps. */
742 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
743 if (screen->get_param(screen, cap_mapping[i].cap)) {
744 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
745 }
746 }
747
748 /* Expose the extensions which directly correspond to gallium formats. */
749 init_format_extensions(screen, extensions, rendertarget_mapping,
750 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
751 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
752 init_format_extensions(screen, extensions, depthstencil_mapping,
753 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
754 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
755 init_format_extensions(screen, extensions, texture_mapping,
756 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
757 PIPE_BIND_SAMPLER_VIEW);
758 init_format_extensions(screen, extensions, vertex_mapping,
759 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
760 PIPE_BIND_VERTEX_BUFFER);
761
762 /* Figure out GLSL support. */
763 glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
764
765 consts->GLSLVersion = glsl_feature_level;
766 if (glsl_feature_level >= 410)
767 consts->GLSLVersion = 410;
768
769 _mesa_override_glsl_version(consts);
770
771 if (options->force_glsl_version > 0 &&
772 options->force_glsl_version <= consts->GLSLVersion) {
773 consts->ForceGLSLVersion = options->force_glsl_version;
774 }
775
776 if (glsl_feature_level >= 400)
777 extensions->ARB_gpu_shader5 = GL_TRUE;
778 if (glsl_feature_level >= 410)
779 extensions->ARB_shader_precision = GL_TRUE;
780
781 /* This extension needs full OpenGL 3.2, but we don't know if that's
782 * supported at this point. Only check the GLSL version. */
783 if (consts->GLSLVersion >= 150 &&
784 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
785 extensions->AMD_vertex_shader_layer = GL_TRUE;
786 }
787
788 if (consts->GLSLVersion >= 130) {
789 consts->NativeIntegers = GL_TRUE;
790 consts->MaxClipPlanes = 8;
791
792 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
793 consts->VertexID_is_zero_based = GL_TRUE;
794 }
795
796 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
797 extensions->ARB_conservative_depth = GL_TRUE;
798 extensions->ARB_shading_language_packing = GL_TRUE;
799 extensions->OES_depth_texture_cube_map = GL_TRUE;
800 extensions->ARB_shading_language_420pack = GL_TRUE;
801 extensions->ARB_texture_query_levels = GL_TRUE;
802 extensions->ARB_shader_subroutine = GL_TRUE;
803
804 if (!options->disable_shader_bit_encoding) {
805 extensions->ARB_shader_bit_encoding = GL_TRUE;
806 }
807
808 extensions->EXT_shader_integer_mix = GL_TRUE;
809 } else {
810 /* Optional integer support for GLSL 1.2. */
811 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
812 PIPE_SHADER_CAP_INTEGERS) &&
813 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
814 PIPE_SHADER_CAP_INTEGERS)) {
815 consts->NativeIntegers = GL_TRUE;
816
817 extensions->EXT_shader_integer_mix = GL_TRUE;
818 }
819
820 /* Integer textures make no sense before GLSL 1.30 */
821 extensions->EXT_texture_integer = GL_FALSE;
822 }
823
824 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
825
826 /* Below are the cases which cannot be moved into tables easily. */
827
828 if (!has_lib_dxtc && !options->force_s3tc_enable) {
829 extensions->EXT_texture_compression_s3tc = GL_FALSE;
830 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
831 }
832
833 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
834 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
835 extensions->ARB_tessellation_shader = GL_TRUE;
836 }
837
838 if (screen->fence_finish) {
839 extensions->ARB_sync = GL_TRUE;
840 }
841
842 /* Maximum sample count. */
843 {
844 enum pipe_format color_formats[] = {
845 PIPE_FORMAT_R8G8B8A8_UNORM,
846 PIPE_FORMAT_B8G8R8A8_UNORM,
847 PIPE_FORMAT_A8R8G8B8_UNORM,
848 PIPE_FORMAT_A8B8G8R8_UNORM,
849 };
850 enum pipe_format depth_formats[] = {
851 PIPE_FORMAT_Z16_UNORM,
852 PIPE_FORMAT_Z24X8_UNORM,
853 PIPE_FORMAT_X8Z24_UNORM,
854 PIPE_FORMAT_Z32_UNORM,
855 PIPE_FORMAT_Z32_FLOAT
856 };
857 enum pipe_format int_formats[] = {
858 PIPE_FORMAT_R8G8B8A8_SINT
859 };
860
861 consts->MaxSamples =
862 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
863 color_formats, 16,
864 PIPE_BIND_RENDER_TARGET);
865
866 consts->MaxColorTextureSamples =
867 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
868 color_formats, consts->MaxSamples,
869 PIPE_BIND_SAMPLER_VIEW);
870
871 consts->MaxDepthTextureSamples =
872 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
873 depth_formats, consts->MaxSamples,
874 PIPE_BIND_SAMPLER_VIEW);
875
876 consts->MaxIntegerSamples =
877 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
878 int_formats, consts->MaxSamples,
879 PIPE_BIND_SAMPLER_VIEW);
880 }
881 if (consts->MaxSamples == 1) {
882 /* one sample doesn't really make sense */
883 consts->MaxSamples = 0;
884 }
885 else if (consts->MaxSamples >= 2) {
886 extensions->EXT_framebuffer_multisample = GL_TRUE;
887 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
888 }
889
890 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
891 consts->FakeSWMSAA = GL_TRUE;
892 extensions->EXT_framebuffer_multisample = GL_TRUE;
893 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
894 extensions->ARB_texture_multisample = GL_TRUE;
895 }
896
897 if (consts->MaxDualSourceDrawBuffers > 0 &&
898 !options->disable_blend_func_extended)
899 extensions->ARB_blend_func_extended = GL_TRUE;
900
901 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
902 extensions->ARB_timer_query) {
903 extensions->EXT_timer_query = GL_TRUE;
904 }
905
906 if (extensions->ARB_transform_feedback2 &&
907 extensions->ARB_draw_instanced) {
908 extensions->ARB_transform_feedback_instanced = GL_TRUE;
909 }
910 if (options->force_glsl_extensions_warn)
911 consts->ForceGLSLExtensionsWarn = 1;
912
913 if (options->disable_glsl_line_continuations)
914 consts->DisableGLSLLineContinuations = 1;
915
916 if (options->allow_glsl_extension_directive_midshader)
917 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
918
919 consts->MinMapBufferAlignment =
920 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
921
922 if (extensions->ARB_texture_buffer_object) {
923 consts->MaxTextureBufferSize =
924 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
925 (1u << 31) - 1);
926 consts->TextureBufferOffsetAlignment =
927 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
928
929 if (consts->TextureBufferOffsetAlignment)
930 extensions->ARB_texture_buffer_range = GL_TRUE;
931
932 init_format_extensions(screen, extensions, tbo_rgb32,
933 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
934 PIPE_BIND_SAMPLER_VIEW);
935 }
936
937 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
938 * If the number of available texture indirections is very limited, then we
939 * prefer to disable varying packing rather than run the risk of varying
940 * packing preventing a shader from running.
941 */
942 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
943 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
944 /* We can't disable varying packing if transform feedback is available,
945 * because transform feedback code assumes a packed varying layout.
946 */
947 if (!extensions->EXT_transform_feedback)
948 consts->DisableVaryingPacking = GL_TRUE;
949 }
950
951 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
952 if (consts->MaxViewports >= 16) {
953 if (glsl_feature_level >= 400) {
954 consts->ViewportBounds.Min = -32768.0;
955 consts->ViewportBounds.Max = 32767.0;
956 } else {
957 consts->ViewportBounds.Min = -16384.0;
958 consts->ViewportBounds.Max = 16383.0;
959 }
960 extensions->ARB_viewport_array = GL_TRUE;
961 extensions->ARB_fragment_layer_viewport = GL_TRUE;
962 if (extensions->AMD_vertex_shader_layer)
963 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
964 }
965
966 /* GL_ARB_ES3_compatibility.
967 *
968 * Assume that ES3 is supported if GLSL 3.30 is supported.
969 * (OpenGL 3.3 is a requirement for that extension.)
970 */
971 if (consts->GLSLVersion >= 330 &&
972 /* Requirements for ETC2 emulation. */
973 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
974 PIPE_TEXTURE_2D, 0,
975 PIPE_BIND_SAMPLER_VIEW) &&
976 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
977 PIPE_TEXTURE_2D, 0,
978 PIPE_BIND_SAMPLER_VIEW) &&
979 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
980 PIPE_TEXTURE_2D, 0,
981 PIPE_BIND_SAMPLER_VIEW) &&
982 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
983 PIPE_TEXTURE_2D, 0,
984 PIPE_BIND_SAMPLER_VIEW) &&
985 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
986 PIPE_TEXTURE_2D, 0,
987 PIPE_BIND_SAMPLER_VIEW) &&
988 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
989 PIPE_TEXTURE_2D, 0,
990 PIPE_BIND_SAMPLER_VIEW)) {
991 extensions->ARB_ES3_compatibility = GL_TRUE;
992 }
993
994 if (screen->get_video_param &&
995 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
996 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
997 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
998 extensions->NV_vdpau_interop = GL_TRUE;
999 }
1000
1001 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1002 PIPE_SHADER_CAP_DOUBLES) &&
1003 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1004 PIPE_SHADER_CAP_DOUBLES)) {
1005 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1006 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1007 }
1008
1009 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1010 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1011 extensions->GREMEDY_string_marker = GL_TRUE;
1012 }