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[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_extensions.h"
41 #include "st_format.h"
42
43
44 /*
45 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
46 * avoid evaluating arguments (which are often function calls) more than once.
47 */
48
49 static unsigned _min(unsigned a, unsigned b)
50 {
51 return (a < b) ? a : b;
52 }
53
54 static float _maxf(float a, float b)
55 {
56 return (a > b) ? a : b;
57 }
58
59 static int _clamp(int a, int min, int max)
60 {
61 if (a < min)
62 return min;
63 else if (a > max)
64 return max;
65 else
66 return a;
67 }
68
69
70 /**
71 * Query driver to get implementation limits.
72 * Note that we have to limit/clamp against Mesa's internal limits too.
73 */
74 void st_init_limits(struct pipe_screen *screen,
75 struct gl_constants *c, struct gl_extensions *extensions)
76 {
77 unsigned sh;
78 boolean can_ubo = TRUE;
79
80 c->MaxTextureLevels
81 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
82 MAX_TEXTURE_LEVELS);
83
84 c->Max3DTextureLevels
85 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
86 MAX_3D_TEXTURE_LEVELS);
87
88 c->MaxCubeTextureLevels
89 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
90 MAX_CUBE_TEXTURE_LEVELS);
91
92 c->MaxTextureRectSize
93 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
94
95 c->MaxArrayTextureLayers
96 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
97
98 /* Define max viewport size and max renderbuffer size in terms of
99 * max texture size (note: max tex RECT size = max tex 2D size).
100 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
101 */
102 c->MaxViewportWidth =
103 c->MaxViewportHeight =
104 c->MaxRenderbufferSize = c->MaxTextureRectSize;
105
106 c->MaxDrawBuffers = c->MaxColorAttachments =
107 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
108 1, MAX_DRAW_BUFFERS);
109
110 c->MaxDualSourceDrawBuffers
111 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
112 0, MAX_DRAW_BUFFERS);
113
114 c->MaxLineWidth
115 = _maxf(1.0f, screen->get_paramf(screen,
116 PIPE_CAPF_MAX_LINE_WIDTH));
117 c->MaxLineWidthAA
118 = _maxf(1.0f, screen->get_paramf(screen,
119 PIPE_CAPF_MAX_LINE_WIDTH_AA));
120
121 c->MaxPointSize
122 = _maxf(1.0f, screen->get_paramf(screen,
123 PIPE_CAPF_MAX_POINT_WIDTH));
124 c->MaxPointSizeAA
125 = _maxf(1.0f, screen->get_paramf(screen,
126 PIPE_CAPF_MAX_POINT_WIDTH_AA));
127
128 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
129 * for non-aa sizes, but we can go down to 0.0 for aa points.
130 */
131 c->MinPointSize = 1.0f;
132 c->MinPointSizeAA = 0.0f;
133
134 c->MaxTextureMaxAnisotropy
135 = _maxf(2.0f, screen->get_paramf(screen,
136 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
137
138 c->MaxTextureLodBias
139 = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
140
141 c->QuadsFollowProvokingVertexConvention = screen->get_param(
142 screen, 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 default:
177 /* compute shader, etc. */
178 continue;
179 }
180
181 pc->MaxTextureImageUnits =
182 _min(screen->get_shader_param(screen, sh,
183 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
184 MAX_TEXTURE_IMAGE_UNITS);
185
186 pc->MaxInstructions = pc->MaxNativeInstructions =
187 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
188 pc->MaxAluInstructions = pc->MaxNativeAluInstructions =
189 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
190 pc->MaxTexInstructions = pc->MaxNativeTexInstructions =
191 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
192 pc->MaxTexIndirections = pc->MaxNativeTexIndirections =
193 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
194 pc->MaxAttribs = pc->MaxNativeAttribs =
195 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
196 pc->MaxTemps = pc->MaxNativeTemps =
197 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
198 pc->MaxAddressRegs = pc->MaxNativeAddressRegs =
199 sh == PIPE_SHADER_VERTEX ? 1 : 0;
200 pc->MaxParameters = pc->MaxNativeParameters =
201 screen->get_shader_param(screen, sh,
202 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
203 pc->MaxInputComponents =
204 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
205 pc->MaxOutputComponents =
206 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
207
208 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
209
210 pc->MaxUniformBlocks =
211 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
212 if (pc->MaxUniformBlocks)
213 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
214 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
215
216 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
217 c->MaxUniformBlockSize / 4 *
218 pc->MaxUniformBlocks);
219
220 /* Gallium doesn't really care about local vs. env parameters so use the
221 * same limits.
222 */
223 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
224 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
225
226 options->EmitNoNoise = TRUE;
227
228 /* TODO: make these more fine-grained if anyone needs it */
229 options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
230 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
231 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
232 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
233
234 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
235
236 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
237 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
238 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
239 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
240 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
241 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
242 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
243 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
244
245 if (pc->MaxNativeInstructions &&
246 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
247 can_ubo = FALSE;
248 }
249
250 if (options->EmitNoLoops)
251 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
252 else
253 options->MaxUnrollIterations = screen->get_shader_param(screen, sh,
254 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
255
256 options->LowerClipDistance = true;
257 options->LowerBufferInterfaceBlocks = true;
258 }
259
260 c->LowerTessLevel = true;
261
262 c->MaxCombinedTextureImageUnits =
263 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
264 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
265 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
266 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
267 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
268 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
269
270 /* This depends on program constants. */
271 c->MaxTextureCoordUnits
272 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
273
274 c->MaxTextureUnits = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, c->MaxTextureCoordUnits);
275
276 c->Program[MESA_SHADER_VERTEX].MaxAttribs = MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
277
278 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
279 * of inputs. It's always 2 colors + N generic inputs. */
280 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
281 PIPE_SHADER_CAP_MAX_INPUTS);
282 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
283 c->MaxGeometryOutputVertices = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
284 c->MaxGeometryTotalOutputComponents = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
285 c->MaxTessPatchComponents =
286 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
287 MAX_VARYING) * 4;
288
289 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
290 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
291
292 c->MaxProgramTextureGatherComponents = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
293 c->MinProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
294 c->MaxProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
295
296 c->MaxTransformFeedbackBuffers =
297 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
298 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS);
299 c->MaxTransformFeedbackSeparateComponents =
300 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
301 c->MaxTransformFeedbackInterleavedComponents =
302 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
303 c->MaxVertexStreams =
304 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
305
306 /* The vertex stream must fit into pipe_stream_output_info::stream */
307 assert(c->MaxVertexStreams <= 4);
308
309 c->MaxVertexAttribStride
310 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
311
312 c->StripTextureBorder = GL_TRUE;
313
314 c->GLSLSkipStrictMaxUniformLimitCheck =
315 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
316
317 if (can_ubo) {
318 extensions->ARB_uniform_buffer_object = GL_TRUE;
319 c->UniformBufferOffsetAlignment =
320 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
321 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
322 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
323 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
324 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
325 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
326 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
327 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
328 }
329 }
330
331
332 /**
333 * Given a member \c x of struct gl_extensions, return offset of
334 * \c x in bytes.
335 */
336 #define o(x) offsetof(struct gl_extensions, x)
337
338
339 struct st_extension_cap_mapping {
340 int extension_offset;
341 int cap;
342 };
343
344 struct st_extension_format_mapping {
345 int extension_offset[2];
346 enum pipe_format format[8];
347
348 /* If TRUE, at least one format must be supported for the extensions to be
349 * advertised. If FALSE, all the formats must be supported. */
350 GLboolean need_at_least_one;
351 };
352
353 /**
354 * Enable extensions if certain pipe formats are supported by the driver.
355 * What extensions will be enabled and what formats must be supported is
356 * described by the array of st_extension_format_mapping.
357 *
358 * target and bind_flags are passed to is_format_supported.
359 */
360 static void
361 init_format_extensions(struct pipe_screen *screen,
362 struct gl_extensions *extensions,
363 const struct st_extension_format_mapping *mapping,
364 unsigned num_mappings,
365 enum pipe_texture_target target,
366 unsigned bind_flags)
367 {
368 GLboolean *extension_table = (GLboolean *) extensions;
369 unsigned i;
370 int j;
371 int num_formats = ARRAY_SIZE(mapping->format);
372 int num_ext = ARRAY_SIZE(mapping->extension_offset);
373
374 for (i = 0; i < num_mappings; i++) {
375 int num_supported = 0;
376
377 /* Examine each format in the list. */
378 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
379 if (screen->is_format_supported(screen, mapping[i].format[j],
380 target, 0, bind_flags)) {
381 num_supported++;
382 }
383 }
384
385 if (!num_supported ||
386 (!mapping[i].need_at_least_one && num_supported != j)) {
387 continue;
388 }
389
390 /* Enable all extensions in the list. */
391 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
392 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
393 }
394 }
395
396
397 /**
398 * Given a list of formats and bind flags, return the maximum number
399 * of samples supported by any of those formats.
400 */
401 static unsigned
402 get_max_samples_for_formats(struct pipe_screen *screen,
403 unsigned num_formats,
404 enum pipe_format *formats,
405 unsigned max_samples,
406 unsigned bind)
407 {
408 unsigned i, f;
409
410 for (i = max_samples; i > 0; --i) {
411 for (f = 0; f < num_formats; f++) {
412 if (screen->is_format_supported(screen, formats[f],
413 PIPE_TEXTURE_2D, i, bind)) {
414 return i;
415 }
416 }
417 }
418 return 0;
419 }
420
421
422 /**
423 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
424 * which GL extensions are supported.
425 * Quite a few extensions are always supported because they are standard
426 * features or can be built on top of other gallium features.
427 * Some fine tuning may still be needed.
428 */
429 void st_init_extensions(struct pipe_screen *screen,
430 struct gl_constants *consts,
431 struct gl_extensions *extensions,
432 struct st_config_options *options,
433 boolean has_lib_dxtc)
434 {
435 unsigned i;
436 int glsl_feature_level;
437 GLboolean *extension_table = (GLboolean *) extensions;
438
439 static const struct st_extension_cap_mapping cap_mapping[] = {
440 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
441 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
442 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
443 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
444 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
445 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
446 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
447 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
448 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
449 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
450 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
451 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
452 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
453 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
454 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
455 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
456 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
457 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
458 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
459 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
460 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
461 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
462 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
463 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
464 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
465 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
466 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
467 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
468
469 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
470 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
471 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
472 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
473 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
474 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
475 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
476 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
477
478 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
479 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
480 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
481 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
482 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
483 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
484 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
485 /* GL_NV_point_sprite is not supported by gallium because we don't
486 * support the GL_POINT_SPRITE_R_MODE_NV option. */
487
488 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
489 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
490 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
491 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
492 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
493 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
494 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
495 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
496 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
497 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
498 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
499 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
500 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
501 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
502 };
503
504 /* Required: render target and sampler support */
505 static const struct st_extension_format_mapping rendertarget_mapping[] = {
506 { { o(ARB_texture_float) },
507 { PIPE_FORMAT_R32G32B32A32_FLOAT,
508 PIPE_FORMAT_R16G16B16A16_FLOAT } },
509
510 { { o(OES_texture_float) },
511 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
512
513 { { o(OES_texture_half_float) },
514 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
515
516 { { o(ARB_texture_rgb10_a2ui) },
517 { PIPE_FORMAT_R10G10B10A2_UINT,
518 PIPE_FORMAT_B10G10R10A2_UINT },
519 GL_TRUE }, /* at least one format must be supported */
520
521 { { o(EXT_framebuffer_sRGB) },
522 { PIPE_FORMAT_A8B8G8R8_SRGB,
523 PIPE_FORMAT_B8G8R8A8_SRGB },
524 GL_TRUE }, /* at least one format must be supported */
525
526 { { o(EXT_packed_float) },
527 { PIPE_FORMAT_R11G11B10_FLOAT } },
528
529 { { o(EXT_texture_integer) },
530 { PIPE_FORMAT_R32G32B32A32_UINT,
531 PIPE_FORMAT_R32G32B32A32_SINT } },
532
533 { { o(ARB_texture_rg) },
534 { PIPE_FORMAT_R8_UNORM,
535 PIPE_FORMAT_R8G8_UNORM } },
536 };
537
538 /* Required: depth stencil and sampler support */
539 static const struct st_extension_format_mapping depthstencil_mapping[] = {
540 { { o(ARB_depth_buffer_float) },
541 { PIPE_FORMAT_Z32_FLOAT,
542 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
543 };
544
545 /* Required: sampler support */
546 static const struct st_extension_format_mapping texture_mapping[] = {
547 { { o(ARB_texture_compression_rgtc) },
548 { PIPE_FORMAT_RGTC1_UNORM,
549 PIPE_FORMAT_RGTC1_SNORM,
550 PIPE_FORMAT_RGTC2_UNORM,
551 PIPE_FORMAT_RGTC2_SNORM } },
552
553 { { o(EXT_texture_compression_latc) },
554 { PIPE_FORMAT_LATC1_UNORM,
555 PIPE_FORMAT_LATC1_SNORM,
556 PIPE_FORMAT_LATC2_UNORM,
557 PIPE_FORMAT_LATC2_SNORM } },
558
559 { { o(EXT_texture_compression_s3tc),
560 o(ANGLE_texture_compression_dxt) },
561 { PIPE_FORMAT_DXT1_RGB,
562 PIPE_FORMAT_DXT1_RGBA,
563 PIPE_FORMAT_DXT3_RGBA,
564 PIPE_FORMAT_DXT5_RGBA } },
565
566 { { o(ARB_texture_compression_bptc) },
567 { PIPE_FORMAT_BPTC_RGBA_UNORM,
568 PIPE_FORMAT_BPTC_SRGBA,
569 PIPE_FORMAT_BPTC_RGB_FLOAT,
570 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
571
572 { { o(EXT_texture_shared_exponent) },
573 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
574
575 { { o(EXT_texture_snorm) },
576 { PIPE_FORMAT_R8G8B8A8_SNORM } },
577
578 { { o(EXT_texture_sRGB),
579 o(EXT_texture_sRGB_decode) },
580 { PIPE_FORMAT_A8B8G8R8_SRGB,
581 PIPE_FORMAT_B8G8R8A8_SRGB },
582 GL_TRUE }, /* at least one format must be supported */
583
584 { { o(ATI_texture_compression_3dc) },
585 { PIPE_FORMAT_LATC2_UNORM } },
586
587 { { o(MESA_ycbcr_texture) },
588 { PIPE_FORMAT_UYVY,
589 PIPE_FORMAT_YUYV },
590 GL_TRUE }, /* at least one format must be supported */
591
592 { { o(OES_compressed_ETC1_RGB8_texture) },
593 { PIPE_FORMAT_ETC1_RGB8,
594 PIPE_FORMAT_R8G8B8A8_UNORM },
595 GL_TRUE }, /* at least one format must be supported */
596
597 { { o(ARB_stencil_texturing),
598 o(ARB_texture_stencil8) },
599 { PIPE_FORMAT_X24S8_UINT,
600 PIPE_FORMAT_S8X24_UINT },
601 GL_TRUE }, /* at least one format must be supported */
602 };
603
604 /* Required: vertex fetch support. */
605 static const struct st_extension_format_mapping vertex_mapping[] = {
606 { { o(ARB_vertex_type_2_10_10_10_rev) },
607 { PIPE_FORMAT_R10G10B10A2_UNORM,
608 PIPE_FORMAT_B10G10R10A2_UNORM,
609 PIPE_FORMAT_R10G10B10A2_SNORM,
610 PIPE_FORMAT_B10G10R10A2_SNORM,
611 PIPE_FORMAT_R10G10B10A2_USCALED,
612 PIPE_FORMAT_B10G10R10A2_USCALED,
613 PIPE_FORMAT_R10G10B10A2_SSCALED,
614 PIPE_FORMAT_B10G10R10A2_SSCALED } },
615 { { o(ARB_vertex_type_10f_11f_11f_rev) },
616 { PIPE_FORMAT_R11G11B10_FLOAT } },
617 };
618
619 static const struct st_extension_format_mapping tbo_rgb32[] = {
620 { {o(ARB_texture_buffer_object_rgb32) },
621 { PIPE_FORMAT_R32G32B32_FLOAT,
622 PIPE_FORMAT_R32G32B32_UINT,
623 PIPE_FORMAT_R32G32B32_SINT,
624 } },
625 };
626
627 /*
628 * Extensions that are supported by all Gallium drivers:
629 */
630 extensions->ARB_ES2_compatibility = GL_TRUE;
631 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
632 extensions->ARB_explicit_attrib_location = GL_TRUE;
633 extensions->ARB_explicit_uniform_location = GL_TRUE;
634 extensions->ARB_fragment_coord_conventions = GL_TRUE;
635 extensions->ARB_fragment_program = GL_TRUE;
636 extensions->ARB_fragment_shader = GL_TRUE;
637 extensions->ARB_half_float_vertex = GL_TRUE;
638 extensions->ARB_internalformat_query = GL_TRUE;
639 extensions->ARB_map_buffer_range = GL_TRUE;
640 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
641 extensions->ARB_texture_cube_map = GL_TRUE;
642 extensions->ARB_texture_env_combine = GL_TRUE;
643 extensions->ARB_texture_env_crossbar = GL_TRUE;
644 extensions->ARB_texture_env_dot3 = GL_TRUE;
645 extensions->ARB_vertex_program = GL_TRUE;
646 extensions->ARB_vertex_shader = GL_TRUE;
647
648 extensions->EXT_blend_color = GL_TRUE;
649 extensions->EXT_blend_func_separate = GL_TRUE;
650 extensions->EXT_blend_minmax = GL_TRUE;
651 extensions->EXT_gpu_program_parameters = GL_TRUE;
652 extensions->EXT_pixel_buffer_object = GL_TRUE;
653 extensions->EXT_point_parameters = GL_TRUE;
654 extensions->EXT_provoking_vertex = GL_TRUE;
655
656 extensions->EXT_texture_env_dot3 = GL_TRUE;
657 extensions->EXT_vertex_array_bgra = GL_TRUE;
658
659 extensions->ATI_texture_env_combine3 = GL_TRUE;
660
661 extensions->MESA_pack_invert = GL_TRUE;
662
663 extensions->NV_fog_distance = GL_TRUE;
664 extensions->NV_texture_env_combine4 = GL_TRUE;
665 extensions->NV_texture_rectangle = GL_TRUE;
666
667 extensions->OES_EGL_image = GL_TRUE;
668 extensions->OES_EGL_image_external = GL_TRUE;
669 extensions->OES_draw_texture = GL_TRUE;
670
671 /* Expose the extensions which directly correspond to gallium caps. */
672 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
673 if (screen->get_param(screen, cap_mapping[i].cap)) {
674 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
675 }
676 }
677
678 /* Expose the extensions which directly correspond to gallium formats. */
679 init_format_extensions(screen, extensions, rendertarget_mapping,
680 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
681 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
682 init_format_extensions(screen, extensions, depthstencil_mapping,
683 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
684 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
685 init_format_extensions(screen, extensions, texture_mapping,
686 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
687 PIPE_BIND_SAMPLER_VIEW);
688 init_format_extensions(screen, extensions, vertex_mapping,
689 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
690 PIPE_BIND_VERTEX_BUFFER);
691
692 /* Figure out GLSL support. */
693 glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
694
695 consts->GLSLVersion = glsl_feature_level;
696 if (glsl_feature_level >= 410)
697 consts->GLSLVersion = 410;
698
699 _mesa_override_glsl_version(consts);
700
701 if (options->force_glsl_version > 0 &&
702 options->force_glsl_version <= consts->GLSLVersion) {
703 consts->ForceGLSLVersion = options->force_glsl_version;
704 }
705
706 if (glsl_feature_level >= 400)
707 extensions->ARB_gpu_shader5 = GL_TRUE;
708 if (glsl_feature_level >= 410)
709 extensions->ARB_shader_precision = GL_TRUE;
710
711 /* This extension needs full OpenGL 3.2, but we don't know if that's
712 * supported at this point. Only check the GLSL version. */
713 if (consts->GLSLVersion >= 150 &&
714 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
715 extensions->AMD_vertex_shader_layer = GL_TRUE;
716 }
717
718 if (consts->GLSLVersion >= 130) {
719 consts->NativeIntegers = GL_TRUE;
720 consts->MaxClipPlanes = 8;
721
722 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
723 consts->VertexID_is_zero_based = GL_TRUE;
724 }
725
726 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
727 extensions->ARB_conservative_depth = GL_TRUE;
728 extensions->ARB_shading_language_packing = GL_TRUE;
729 extensions->OES_depth_texture_cube_map = GL_TRUE;
730 extensions->ARB_shading_language_420pack = GL_TRUE;
731 extensions->ARB_texture_query_levels = GL_TRUE;
732 extensions->ARB_shader_subroutine = GL_TRUE;
733
734 if (!options->disable_shader_bit_encoding) {
735 extensions->ARB_shader_bit_encoding = GL_TRUE;
736 }
737
738 extensions->EXT_shader_integer_mix = GL_TRUE;
739 } else {
740 /* Optional integer support for GLSL 1.2. */
741 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
742 PIPE_SHADER_CAP_INTEGERS) &&
743 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
744 PIPE_SHADER_CAP_INTEGERS)) {
745 consts->NativeIntegers = GL_TRUE;
746
747 extensions->EXT_shader_integer_mix = GL_TRUE;
748 }
749
750 /* Integer textures make no sense before GLSL 1.30 */
751 extensions->EXT_texture_integer = GL_FALSE;
752 }
753
754 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
755
756 /* Below are the cases which cannot be moved into tables easily. */
757
758 if (!has_lib_dxtc && !options->force_s3tc_enable) {
759 extensions->EXT_texture_compression_s3tc = GL_FALSE;
760 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
761 }
762
763 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
764 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
765 extensions->ARB_tessellation_shader = GL_TRUE;
766 }
767
768 if (screen->fence_finish) {
769 extensions->ARB_sync = GL_TRUE;
770 }
771
772 /* Maximum sample count. */
773 {
774 enum pipe_format color_formats[] = {
775 PIPE_FORMAT_R8G8B8A8_UNORM,
776 PIPE_FORMAT_B8G8R8A8_UNORM,
777 PIPE_FORMAT_A8R8G8B8_UNORM,
778 PIPE_FORMAT_A8B8G8R8_UNORM,
779 };
780 enum pipe_format depth_formats[] = {
781 PIPE_FORMAT_Z16_UNORM,
782 PIPE_FORMAT_Z24X8_UNORM,
783 PIPE_FORMAT_X8Z24_UNORM,
784 PIPE_FORMAT_Z32_UNORM,
785 PIPE_FORMAT_Z32_FLOAT
786 };
787 enum pipe_format int_formats[] = {
788 PIPE_FORMAT_R8G8B8A8_SINT
789 };
790
791 consts->MaxSamples =
792 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
793 color_formats, 16,
794 PIPE_BIND_RENDER_TARGET);
795
796 consts->MaxColorTextureSamples =
797 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
798 color_formats, consts->MaxSamples,
799 PIPE_BIND_SAMPLER_VIEW);
800
801 consts->MaxDepthTextureSamples =
802 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
803 depth_formats, consts->MaxSamples,
804 PIPE_BIND_SAMPLER_VIEW);
805
806 consts->MaxIntegerSamples =
807 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
808 int_formats, consts->MaxSamples,
809 PIPE_BIND_SAMPLER_VIEW);
810 }
811 if (consts->MaxSamples == 1) {
812 /* one sample doesn't really make sense */
813 consts->MaxSamples = 0;
814 }
815 else if (consts->MaxSamples >= 2) {
816 extensions->EXT_framebuffer_multisample = GL_TRUE;
817 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
818 }
819
820 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
821 consts->FakeSWMSAA = GL_TRUE;
822 extensions->EXT_framebuffer_multisample = GL_TRUE;
823 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
824 extensions->ARB_texture_multisample = GL_TRUE;
825 }
826
827 if (consts->MaxDualSourceDrawBuffers > 0 &&
828 !options->disable_blend_func_extended)
829 extensions->ARB_blend_func_extended = GL_TRUE;
830
831 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
832 extensions->ARB_timer_query) {
833 extensions->EXT_timer_query = GL_TRUE;
834 }
835
836 if (extensions->ARB_transform_feedback2 &&
837 extensions->ARB_draw_instanced) {
838 extensions->ARB_transform_feedback_instanced = GL_TRUE;
839 }
840 if (options->force_glsl_extensions_warn)
841 consts->ForceGLSLExtensionsWarn = 1;
842
843 if (options->disable_glsl_line_continuations)
844 consts->DisableGLSLLineContinuations = 1;
845
846 if (options->allow_glsl_extension_directive_midshader)
847 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
848
849 consts->MinMapBufferAlignment =
850 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
851
852 if (extensions->ARB_texture_buffer_object) {
853 consts->MaxTextureBufferSize =
854 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
855 (1u << 31) - 1);
856 consts->TextureBufferOffsetAlignment =
857 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
858
859 if (consts->TextureBufferOffsetAlignment)
860 extensions->ARB_texture_buffer_range = GL_TRUE;
861
862 init_format_extensions(screen, extensions, tbo_rgb32,
863 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
864 PIPE_BIND_SAMPLER_VIEW);
865 }
866
867 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
868 * If the number of available texture indirections is very limited, then we
869 * prefer to disable varying packing rather than run the risk of varying
870 * packing preventing a shader from running.
871 */
872 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
873 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
874 /* We can't disable varying packing if transform feedback is available,
875 * because transform feedback code assumes a packed varying layout.
876 */
877 if (!extensions->EXT_transform_feedback)
878 consts->DisableVaryingPacking = GL_TRUE;
879 }
880
881 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
882 if (consts->MaxViewports >= 16) {
883 if (glsl_feature_level >= 400) {
884 consts->ViewportBounds.Min = -32768.0;
885 consts->ViewportBounds.Max = 32767.0;
886 } else {
887 consts->ViewportBounds.Min = -16384.0;
888 consts->ViewportBounds.Max = 16383.0;
889 }
890 extensions->ARB_viewport_array = GL_TRUE;
891 extensions->ARB_fragment_layer_viewport = GL_TRUE;
892 if (extensions->AMD_vertex_shader_layer)
893 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
894 }
895
896 /* GL_ARB_ES3_compatibility.
897 *
898 * Assume that ES3 is supported if GLSL 3.30 is supported.
899 * (OpenGL 3.3 is a requirement for that extension.)
900 */
901 if (consts->GLSLVersion >= 330 &&
902 /* Requirements for ETC2 emulation. */
903 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
904 PIPE_TEXTURE_2D, 0,
905 PIPE_BIND_SAMPLER_VIEW) &&
906 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
907 PIPE_TEXTURE_2D, 0,
908 PIPE_BIND_SAMPLER_VIEW) &&
909 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
910 PIPE_TEXTURE_2D, 0,
911 PIPE_BIND_SAMPLER_VIEW) &&
912 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
913 PIPE_TEXTURE_2D, 0,
914 PIPE_BIND_SAMPLER_VIEW) &&
915 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
916 PIPE_TEXTURE_2D, 0,
917 PIPE_BIND_SAMPLER_VIEW) &&
918 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
919 PIPE_TEXTURE_2D, 0,
920 PIPE_BIND_SAMPLER_VIEW)) {
921 extensions->ARB_ES3_compatibility = GL_TRUE;
922 }
923
924 if (screen->get_video_param &&
925 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
926 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
927 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
928 extensions->NV_vdpau_interop = GL_TRUE;
929 }
930
931 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
932 PIPE_SHADER_CAP_DOUBLES) &&
933 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
934 PIPE_SHADER_CAP_DOUBLES)) {
935 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
936 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
937 }
938 }