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
_min(unsigned a,unsigned b)50 static unsigned _min(unsigned a, unsigned b)
51 {
52 return (a < b) ? a : b;
53 }
54
_maxf(float a,float b)55 static float _maxf(float a, float b)
56 {
57 return (a > b) ? a : b;
58 }
59
_clamp(int a,int min,int max)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 */
st_init_limits(struct pipe_screen * screen,struct gl_constants * c,struct gl_extensions * extensions)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->ViewportSubpixelBits =
109 screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);
110
111 c->MaxDrawBuffers = c->MaxColorAttachments =
112 _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
113 1, MAX_DRAW_BUFFERS);
114
115 c->MaxDualSourceDrawBuffers =
116 _clamp(screen->get_param(screen,
117 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
118 0, MAX_DRAW_BUFFERS);
119
120 c->MaxLineWidth =
121 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
122 c->MaxLineWidthAA =
123 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));
124
125 c->MaxPointSize =
126 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
127 c->MaxPointSizeAA =
128 _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
129
130 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
131 * for non-aa sizes, but we can go down to 0.0 for aa points.
132 */
133 c->MinPointSize = 1.0f;
134 c->MinPointSizeAA = 0.0f;
135
136 c->MaxTextureMaxAnisotropy =
137 _maxf(2.0f,
138 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
139
140 c->MaxTextureLodBias =
141 screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
142
143 c->QuadsFollowProvokingVertexConvention =
144 screen->get_param(screen,
145 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
146
147 c->MaxUniformBlockSize =
148 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
149 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
150 if (c->MaxUniformBlockSize < 16384) {
151 can_ubo = FALSE;
152 }
153
154 for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
155 struct gl_shader_compiler_options *options;
156 struct gl_program_constants *pc;
157
158 switch (sh) {
159 case PIPE_SHADER_FRAGMENT:
160 pc = &c->Program[MESA_SHADER_FRAGMENT];
161 options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
162 break;
163 case PIPE_SHADER_VERTEX:
164 pc = &c->Program[MESA_SHADER_VERTEX];
165 options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
166 break;
167 case PIPE_SHADER_GEOMETRY:
168 pc = &c->Program[MESA_SHADER_GEOMETRY];
169 options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
170 break;
171 case PIPE_SHADER_TESS_CTRL:
172 pc = &c->Program[MESA_SHADER_TESS_CTRL];
173 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
174 break;
175 case PIPE_SHADER_TESS_EVAL:
176 pc = &c->Program[MESA_SHADER_TESS_EVAL];
177 options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
178 break;
179 case PIPE_SHADER_COMPUTE:
180 pc = &c->Program[MESA_SHADER_COMPUTE];
181 options = &c->ShaderCompilerOptions[MESA_SHADER_COMPUTE];
182
183 if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
184 continue;
185 supported_irs =
186 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
187 if (!(supported_irs & (1 << PIPE_SHADER_IR_TGSI)))
188 continue;
189 break;
190 default:
191 assert(0);
192 }
193
194 pc->MaxTextureImageUnits =
195 _min(screen->get_shader_param(screen, sh,
196 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
197 MAX_TEXTURE_IMAGE_UNITS);
198
199 pc->MaxInstructions =
200 pc->MaxNativeInstructions =
201 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
202 pc->MaxAluInstructions =
203 pc->MaxNativeAluInstructions =
204 screen->get_shader_param(screen, sh,
205 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
206 pc->MaxTexInstructions =
207 pc->MaxNativeTexInstructions =
208 screen->get_shader_param(screen, sh,
209 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
210 pc->MaxTexIndirections =
211 pc->MaxNativeTexIndirections =
212 screen->get_shader_param(screen, sh,
213 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
214 pc->MaxAttribs =
215 pc->MaxNativeAttribs =
216 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
217 pc->MaxTemps =
218 pc->MaxNativeTemps =
219 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
220 pc->MaxAddressRegs =
221 pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
222 pc->MaxParameters =
223 pc->MaxNativeParameters =
224 screen->get_shader_param(screen, sh,
225 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
226 pc->MaxInputComponents =
227 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
228 pc->MaxOutputComponents =
229 screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
230
231 pc->MaxUniformComponents =
232 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
233
234 pc->MaxUniformBlocks =
235 screen->get_shader_param(screen, sh,
236 PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
237 if (pc->MaxUniformBlocks)
238 pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
239 pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
240
241 pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
242 c->MaxUniformBlockSize / 4 *
243 pc->MaxUniformBlocks);
244
245 pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
246 pc->MaxAtomicBuffers = screen->get_shader_param(
247 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
248 pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
249
250 pc->MaxImageUniforms = screen->get_shader_param(
251 screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
252
253 /* Gallium doesn't really care about local vs. env parameters so use the
254 * same limits.
255 */
256 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
257 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
258
259 if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
260 pc->LowInt.RangeMin = 31;
261 pc->LowInt.RangeMax = 30;
262 pc->LowInt.Precision = 0;
263 pc->MediumInt = pc->HighInt = pc->LowInt;
264 }
265
266 /* TODO: make these more fine-grained if anyone needs it */
267 options->MaxIfDepth =
268 screen->get_shader_param(screen, sh,
269 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
270 options->EmitNoLoops =
271 !screen->get_shader_param(screen, sh,
272 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
273 options->EmitNoFunctions = true;
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
313 c->GLSLOptimizeConservatively =
314 screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
315 c->LowerTessLevel = true;
316 c->LowerCsDerivedVariables = true;
317 c->PrimitiveRestartForPatches =
318 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
319
320 c->MaxCombinedTextureImageUnits =
321 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
322 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
323 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
324 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
325 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
326 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
327 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
328
329 /* This depends on program constants. */
330 c->MaxTextureCoordUnits
331 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
332 MAX_TEXTURE_COORD_UNITS);
333
334 c->MaxTextureUnits =
335 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
336 c->MaxTextureCoordUnits);
337
338 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
339 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
340
341 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
342 * of inputs. It's always 2 colors + N generic inputs. */
343 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
344 PIPE_SHADER_CAP_MAX_INPUTS);
345 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
346 c->MaxGeometryOutputVertices =
347 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
348 c->MaxGeometryTotalOutputComponents =
349 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
350 c->MaxTessPatchComponents =
351 MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
352 MAX_VARYING) * 4;
353
354 c->MinProgramTexelOffset =
355 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
356 c->MaxProgramTexelOffset =
357 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
358
359 c->MaxProgramTextureGatherComponents =
360 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
361 c->MinProgramTextureGatherOffset =
362 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
363 c->MaxProgramTextureGatherOffset =
364 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
365
366 c->MaxTransformFeedbackBuffers =
367 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
368 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
369 MAX_FEEDBACK_BUFFERS);
370 c->MaxTransformFeedbackSeparateComponents =
371 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
372 c->MaxTransformFeedbackInterleavedComponents =
373 screen->get_param(screen,
374 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
375 c->MaxVertexStreams =
376 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
377
378 /* The vertex stream must fit into pipe_stream_output_info::stream */
379 assert(c->MaxVertexStreams <= 4);
380
381 c->MaxVertexAttribStride
382 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
383
384 c->StripTextureBorder = GL_TRUE;
385
386 c->GLSLSkipStrictMaxUniformLimitCheck =
387 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
388
389 c->UniformBufferOffsetAlignment =
390 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
391
392 if (can_ubo) {
393 extensions->ARB_uniform_buffer_object = GL_TRUE;
394 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
395 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
396 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
397 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
398 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
399 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
400 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
401 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
402 }
403
404 c->GLSLFragCoordIsSysVal =
405 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
406 c->GLSLFrontFacingIsSysVal =
407 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
408
409 c->MaxAtomicBufferBindings =
410 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
411 c->MaxCombinedAtomicBuffers =
412 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
413 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
414 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
415 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
416 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
417 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
418
419 if (c->MaxCombinedAtomicBuffers > 0) {
420 extensions->ARB_shader_atomic_counters = GL_TRUE;
421 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
422 }
423
424 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
425 c->ShaderStorageBufferOffsetAlignment =
426 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
427 if (c->ShaderStorageBufferOffsetAlignment) {
428 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
429 c->MaxCombinedAtomicBuffers;
430 c->MaxCombinedShaderOutputResources +=
431 c->MaxCombinedShaderStorageBlocks;
432 c->MaxShaderStorageBlockSize = 1 << 27;
433 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
434 }
435
436 c->MaxCombinedImageUniforms =
437 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
438 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
439 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
440 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
441 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
442 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
443 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
444 c->MaxImageUnits = MAX_IMAGE_UNITS;
445 if (c->MaxCombinedImageUniforms) {
446 extensions->ARB_shader_image_load_store = GL_TRUE;
447 extensions->ARB_shader_image_size = GL_TRUE;
448 }
449
450 /* ARB_framebuffer_no_attachments */
451 c->MaxFramebufferWidth = c->MaxViewportWidth;
452 c->MaxFramebufferHeight = c->MaxViewportHeight;
453 /* NOTE: we cheat here a little by assuming that
454 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
455 * number of layers as we need, although we technically
456 * could have more the generality is not really useful
457 * in practicality.
458 */
459 c->MaxFramebufferLayers =
460 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
461
462 c->MaxWindowRectangles =
463 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
464 }
465
466
467 /**
468 * Given a member \c x of struct gl_extensions, return offset of
469 * \c x in bytes.
470 */
471 #define o(x) offsetof(struct gl_extensions, x)
472
473
474 struct st_extension_cap_mapping {
475 int extension_offset;
476 int cap;
477 };
478
479 struct st_extension_format_mapping {
480 int extension_offset[2];
481 enum pipe_format format[32];
482
483 /* If TRUE, at least one format must be supported for the extensions to be
484 * advertised. If FALSE, all the formats must be supported. */
485 GLboolean need_at_least_one;
486 };
487
488 /**
489 * Enable extensions if certain pipe formats are supported by the driver.
490 * What extensions will be enabled and what formats must be supported is
491 * described by the array of st_extension_format_mapping.
492 *
493 * target and bind_flags are passed to is_format_supported.
494 */
495 static void
init_format_extensions(struct pipe_screen * screen,struct gl_extensions * extensions,const struct st_extension_format_mapping * mapping,unsigned num_mappings,enum pipe_texture_target target,unsigned bind_flags)496 init_format_extensions(struct pipe_screen *screen,
497 struct gl_extensions *extensions,
498 const struct st_extension_format_mapping *mapping,
499 unsigned num_mappings,
500 enum pipe_texture_target target,
501 unsigned bind_flags)
502 {
503 GLboolean *extension_table = (GLboolean *) extensions;
504 unsigned i;
505 int j;
506 int num_formats = ARRAY_SIZE(mapping->format);
507 int num_ext = ARRAY_SIZE(mapping->extension_offset);
508
509 for (i = 0; i < num_mappings; i++) {
510 int num_supported = 0;
511
512 /* Examine each format in the list. */
513 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
514 if (screen->is_format_supported(screen, mapping[i].format[j],
515 target, 0, bind_flags)) {
516 num_supported++;
517 }
518 }
519
520 if (!num_supported ||
521 (!mapping[i].need_at_least_one && num_supported != j)) {
522 continue;
523 }
524
525 /* Enable all extensions in the list. */
526 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
527 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
528 }
529 }
530
531
532 /**
533 * Given a list of formats and bind flags, return the maximum number
534 * of samples supported by any of those formats.
535 */
536 static unsigned
get_max_samples_for_formats(struct pipe_screen * screen,unsigned num_formats,enum pipe_format * formats,unsigned max_samples,unsigned bind)537 get_max_samples_for_formats(struct pipe_screen *screen,
538 unsigned num_formats,
539 enum pipe_format *formats,
540 unsigned max_samples,
541 unsigned bind)
542 {
543 unsigned i, f;
544
545 for (i = max_samples; i > 0; --i) {
546 for (f = 0; f < num_formats; f++) {
547 if (screen->is_format_supported(screen, formats[f],
548 PIPE_TEXTURE_2D, i, bind)) {
549 return i;
550 }
551 }
552 }
553 return 0;
554 }
555
556
557 /**
558 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
559 * which GL extensions are supported.
560 * Quite a few extensions are always supported because they are standard
561 * features or can be built on top of other gallium features.
562 * Some fine tuning may still be needed.
563 */
st_init_extensions(struct pipe_screen * screen,struct gl_constants * consts,struct gl_extensions * extensions,struct st_config_options * options,boolean has_lib_dxtc)564 void st_init_extensions(struct pipe_screen *screen,
565 struct gl_constants *consts,
566 struct gl_extensions *extensions,
567 struct st_config_options *options,
568 boolean has_lib_dxtc)
569 {
570 unsigned i;
571 GLboolean *extension_table = (GLboolean *) extensions;
572
573 static const struct st_extension_cap_mapping cap_mapping[] = {
574 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
575 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
576 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
577 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
578 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
579 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
580 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
581 { o(OES_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_INTERLEAVE_BUFFERS },
618
619 { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
620
621 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
622 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
623 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
624 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
625 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
626 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
627 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
628 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
629 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
630 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
631 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
632
633 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
634 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
635 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
636 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
637 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
638 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
639 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
640 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
641 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
642 /* GL_NV_point_sprite is not supported by gallium because we don't
643 * support the GL_POINT_SPRITE_R_MODE_NV option. */
644
645 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
646 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
647 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
648 };
649
650 /* Required: render target and sampler support */
651 static const struct st_extension_format_mapping rendertarget_mapping[] = {
652 { { o(ARB_texture_float) },
653 { PIPE_FORMAT_R32G32B32A32_FLOAT,
654 PIPE_FORMAT_R16G16B16A16_FLOAT } },
655
656 { { o(OES_texture_float) },
657 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
658
659 { { o(OES_texture_half_float) },
660 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
661
662 { { o(ARB_texture_rgb10_a2ui) },
663 { PIPE_FORMAT_R10G10B10A2_UINT,
664 PIPE_FORMAT_B10G10R10A2_UINT },
665 GL_TRUE }, /* at least one format must be supported */
666
667 { { o(EXT_framebuffer_sRGB) },
668 { PIPE_FORMAT_A8B8G8R8_SRGB,
669 PIPE_FORMAT_B8G8R8A8_SRGB },
670 GL_TRUE }, /* at least one format must be supported */
671
672 { { o(EXT_packed_float) },
673 { PIPE_FORMAT_R11G11B10_FLOAT } },
674
675 { { o(EXT_texture_integer) },
676 { PIPE_FORMAT_R32G32B32A32_UINT,
677 PIPE_FORMAT_R32G32B32A32_SINT } },
678
679 { { o(ARB_texture_rg) },
680 { PIPE_FORMAT_R8_UNORM,
681 PIPE_FORMAT_R8G8_UNORM } },
682 };
683
684 /* Required: depth stencil and sampler support */
685 static const struct st_extension_format_mapping depthstencil_mapping[] = {
686 { { o(ARB_depth_buffer_float) },
687 { PIPE_FORMAT_Z32_FLOAT,
688 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
689 };
690
691 /* Required: sampler support */
692 static const struct st_extension_format_mapping texture_mapping[] = {
693 { { o(ARB_texture_compression_rgtc) },
694 { PIPE_FORMAT_RGTC1_UNORM,
695 PIPE_FORMAT_RGTC1_SNORM,
696 PIPE_FORMAT_RGTC2_UNORM,
697 PIPE_FORMAT_RGTC2_SNORM } },
698
699 { { o(EXT_texture_compression_latc) },
700 { PIPE_FORMAT_LATC1_UNORM,
701 PIPE_FORMAT_LATC1_SNORM,
702 PIPE_FORMAT_LATC2_UNORM,
703 PIPE_FORMAT_LATC2_SNORM } },
704
705 { { o(EXT_texture_compression_s3tc),
706 o(ANGLE_texture_compression_dxt) },
707 { PIPE_FORMAT_DXT1_RGB,
708 PIPE_FORMAT_DXT1_RGBA,
709 PIPE_FORMAT_DXT3_RGBA,
710 PIPE_FORMAT_DXT5_RGBA } },
711
712 { { o(ARB_texture_compression_bptc) },
713 { PIPE_FORMAT_BPTC_RGBA_UNORM,
714 PIPE_FORMAT_BPTC_SRGBA,
715 PIPE_FORMAT_BPTC_RGB_FLOAT,
716 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
717
718 { { o(KHR_texture_compression_astc_ldr) },
719 { PIPE_FORMAT_ASTC_4x4,
720 PIPE_FORMAT_ASTC_5x4,
721 PIPE_FORMAT_ASTC_5x5,
722 PIPE_FORMAT_ASTC_6x5,
723 PIPE_FORMAT_ASTC_6x6,
724 PIPE_FORMAT_ASTC_8x5,
725 PIPE_FORMAT_ASTC_8x6,
726 PIPE_FORMAT_ASTC_8x8,
727 PIPE_FORMAT_ASTC_10x5,
728 PIPE_FORMAT_ASTC_10x6,
729 PIPE_FORMAT_ASTC_10x8,
730 PIPE_FORMAT_ASTC_10x10,
731 PIPE_FORMAT_ASTC_12x10,
732 PIPE_FORMAT_ASTC_12x12,
733 PIPE_FORMAT_ASTC_4x4_SRGB,
734 PIPE_FORMAT_ASTC_5x4_SRGB,
735 PIPE_FORMAT_ASTC_5x5_SRGB,
736 PIPE_FORMAT_ASTC_6x5_SRGB,
737 PIPE_FORMAT_ASTC_6x6_SRGB,
738 PIPE_FORMAT_ASTC_8x5_SRGB,
739 PIPE_FORMAT_ASTC_8x6_SRGB,
740 PIPE_FORMAT_ASTC_8x8_SRGB,
741 PIPE_FORMAT_ASTC_10x5_SRGB,
742 PIPE_FORMAT_ASTC_10x6_SRGB,
743 PIPE_FORMAT_ASTC_10x8_SRGB,
744 PIPE_FORMAT_ASTC_10x10_SRGB,
745 PIPE_FORMAT_ASTC_12x10_SRGB,
746 PIPE_FORMAT_ASTC_12x12_SRGB } },
747
748 { { o(EXT_texture_shared_exponent) },
749 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
750
751 { { o(EXT_texture_snorm) },
752 { PIPE_FORMAT_R8G8B8A8_SNORM } },
753
754 { { o(EXT_texture_sRGB),
755 o(EXT_texture_sRGB_decode) },
756 { PIPE_FORMAT_A8B8G8R8_SRGB,
757 PIPE_FORMAT_B8G8R8A8_SRGB },
758 GL_TRUE }, /* at least one format must be supported */
759
760 { { o(ATI_texture_compression_3dc) },
761 { PIPE_FORMAT_LATC2_UNORM } },
762
763 { { o(MESA_ycbcr_texture) },
764 { PIPE_FORMAT_UYVY,
765 PIPE_FORMAT_YUYV },
766 GL_TRUE }, /* at least one format must be supported */
767
768 { { o(OES_compressed_ETC1_RGB8_texture) },
769 { PIPE_FORMAT_ETC1_RGB8,
770 PIPE_FORMAT_R8G8B8A8_UNORM },
771 GL_TRUE }, /* at least one format must be supported */
772
773 { { o(ARB_stencil_texturing),
774 o(ARB_texture_stencil8) },
775 { PIPE_FORMAT_X24S8_UINT,
776 PIPE_FORMAT_S8X24_UINT },
777 GL_TRUE }, /* at least one format must be supported */
778 };
779
780 /* Required: vertex fetch support. */
781 static const struct st_extension_format_mapping vertex_mapping[] = {
782 { { o(EXT_vertex_array_bgra) },
783 { PIPE_FORMAT_B8G8R8A8_UNORM } },
784 { { o(ARB_vertex_type_2_10_10_10_rev) },
785 { PIPE_FORMAT_R10G10B10A2_UNORM,
786 PIPE_FORMAT_B10G10R10A2_UNORM,
787 PIPE_FORMAT_R10G10B10A2_SNORM,
788 PIPE_FORMAT_B10G10R10A2_SNORM,
789 PIPE_FORMAT_R10G10B10A2_USCALED,
790 PIPE_FORMAT_B10G10R10A2_USCALED,
791 PIPE_FORMAT_R10G10B10A2_SSCALED,
792 PIPE_FORMAT_B10G10R10A2_SSCALED } },
793 { { o(ARB_vertex_type_10f_11f_11f_rev) },
794 { PIPE_FORMAT_R11G11B10_FLOAT } },
795 };
796
797 static const struct st_extension_format_mapping tbo_rgb32[] = {
798 { {o(ARB_texture_buffer_object_rgb32) },
799 { PIPE_FORMAT_R32G32B32_FLOAT,
800 PIPE_FORMAT_R32G32B32_UINT,
801 PIPE_FORMAT_R32G32B32_SINT,
802 } },
803 };
804
805 /*
806 * Extensions that are supported by all Gallium drivers:
807 */
808 extensions->ARB_ES2_compatibility = GL_TRUE;
809 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
810 extensions->ARB_explicit_attrib_location = GL_TRUE;
811 extensions->ARB_explicit_uniform_location = GL_TRUE;
812 extensions->ARB_fragment_coord_conventions = GL_TRUE;
813 extensions->ARB_fragment_program = GL_TRUE;
814 extensions->ARB_fragment_shader = GL_TRUE;
815 extensions->ARB_half_float_vertex = GL_TRUE;
816 extensions->ARB_internalformat_query = GL_TRUE;
817 extensions->ARB_internalformat_query2 = GL_TRUE;
818 extensions->ARB_map_buffer_range = GL_TRUE;
819 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
820 extensions->ARB_texture_cube_map = GL_TRUE;
821 extensions->ARB_texture_env_combine = GL_TRUE;
822 extensions->ARB_texture_env_crossbar = GL_TRUE;
823 extensions->ARB_texture_env_dot3 = GL_TRUE;
824 extensions->ARB_vertex_program = GL_TRUE;
825 extensions->ARB_vertex_shader = GL_TRUE;
826
827 extensions->EXT_blend_color = GL_TRUE;
828 extensions->EXT_blend_func_separate = GL_TRUE;
829 extensions->EXT_blend_minmax = GL_TRUE;
830 extensions->EXT_gpu_program_parameters = GL_TRUE;
831 extensions->EXT_pixel_buffer_object = GL_TRUE;
832 extensions->EXT_point_parameters = GL_TRUE;
833 extensions->EXT_provoking_vertex = GL_TRUE;
834
835 extensions->EXT_texture_env_dot3 = GL_TRUE;
836
837 extensions->ATI_fragment_shader = GL_TRUE;
838 extensions->ATI_texture_env_combine3 = GL_TRUE;
839
840 extensions->MESA_pack_invert = GL_TRUE;
841
842 extensions->NV_fog_distance = GL_TRUE;
843 extensions->NV_texture_env_combine4 = GL_TRUE;
844 extensions->NV_texture_rectangle = GL_TRUE;
845
846 extensions->OES_EGL_image = GL_TRUE;
847 extensions->OES_EGL_image_external = GL_TRUE;
848 extensions->OES_draw_texture = GL_TRUE;
849
850 /* Expose the extensions which directly correspond to gallium caps. */
851 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
852 if (screen->get_param(screen, cap_mapping[i].cap)) {
853 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
854 }
855 }
856
857 /* Expose the extensions which directly correspond to gallium formats. */
858 init_format_extensions(screen, extensions, rendertarget_mapping,
859 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
860 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
861 init_format_extensions(screen, extensions, depthstencil_mapping,
862 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
863 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
864 init_format_extensions(screen, extensions, texture_mapping,
865 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
866 PIPE_BIND_SAMPLER_VIEW);
867 init_format_extensions(screen, extensions, vertex_mapping,
868 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
869 PIPE_BIND_VERTEX_BUFFER);
870
871 /* Figure out GLSL support and set GLSLVersion to it. */
872 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
873
874 _mesa_override_glsl_version(consts);
875
876 if (options->force_glsl_version > 0 &&
877 options->force_glsl_version <= consts->GLSLVersion) {
878 consts->ForceGLSLVersion = options->force_glsl_version;
879 }
880
881 if (consts->GLSLVersion >= 400)
882 extensions->ARB_gpu_shader5 = GL_TRUE;
883 if (consts->GLSLVersion >= 410)
884 extensions->ARB_shader_precision = GL_TRUE;
885
886 /* This extension needs full OpenGL 3.2, but we don't know if that's
887 * supported at this point. Only check the GLSL version. */
888 if (consts->GLSLVersion >= 150 &&
889 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
890 extensions->AMD_vertex_shader_layer = GL_TRUE;
891 }
892
893 if (consts->GLSLVersion >= 140) {
894 if (screen->get_param(screen, PIPE_CAP_TGSI_ARRAY_COMPONENTS) &&
895 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
896 PIPE_SHADER_CAP_PREFERRED_IR) == PIPE_SHADER_IR_TGSI)
897 extensions->ARB_enhanced_layouts = GL_TRUE;
898 }
899
900 if (consts->GLSLVersion >= 130) {
901 consts->NativeIntegers = GL_TRUE;
902 consts->MaxClipPlanes = 8;
903
904 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
905 consts->VertexID_is_zero_based = GL_TRUE;
906 }
907
908 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
909 extensions->ARB_conservative_depth = GL_TRUE;
910 extensions->ARB_shading_language_packing = GL_TRUE;
911 extensions->OES_depth_texture_cube_map = GL_TRUE;
912 extensions->ARB_shading_language_420pack = GL_TRUE;
913 extensions->ARB_texture_query_levels = GL_TRUE;
914 extensions->ARB_shader_subroutine = GL_TRUE;
915
916 if (!options->disable_shader_bit_encoding) {
917 extensions->ARB_shader_bit_encoding = GL_TRUE;
918 }
919
920 extensions->EXT_shader_integer_mix = GL_TRUE;
921 extensions->ARB_arrays_of_arrays = GL_TRUE;
922 extensions->MESA_shader_integer_functions = GL_TRUE;
923 } else {
924 /* Optional integer support for GLSL 1.2. */
925 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
926 PIPE_SHADER_CAP_INTEGERS) &&
927 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
928 PIPE_SHADER_CAP_INTEGERS)) {
929 consts->NativeIntegers = GL_TRUE;
930
931 extensions->EXT_shader_integer_mix = GL_TRUE;
932 }
933
934 /* Integer textures make no sense before GLSL 1.30 */
935 extensions->EXT_texture_integer = GL_FALSE;
936 }
937
938 consts->GLSLZeroInit = options->glsl_zero_init;
939
940 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
941
942 /* Below are the cases which cannot be moved into tables easily. */
943
944 if (!has_lib_dxtc && !options->force_s3tc_enable) {
945 extensions->EXT_texture_compression_s3tc = GL_FALSE;
946 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
947 }
948
949 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
950 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
951 extensions->ARB_tessellation_shader = GL_TRUE;
952 }
953
954 /* What this is really checking for is the ability to support multiple
955 * invocations of a geometry shader. There is no separate cap for that, so
956 * we check the GLSLVersion.
957 */
958 if (consts->GLSLVersion >= 400 &&
959 screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
960 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
961 extensions->OES_geometry_shader = GL_TRUE;
962 }
963
964 if (screen->fence_finish) {
965 extensions->ARB_sync = GL_TRUE;
966 }
967
968 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
969 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
970 */
971 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
972 extensions->ARB_gpu_shader5;
973
974 /* Maximum sample count. */
975 {
976 enum pipe_format color_formats[] = {
977 PIPE_FORMAT_R8G8B8A8_UNORM,
978 PIPE_FORMAT_B8G8R8A8_UNORM,
979 PIPE_FORMAT_A8R8G8B8_UNORM,
980 PIPE_FORMAT_A8B8G8R8_UNORM,
981 };
982 enum pipe_format depth_formats[] = {
983 PIPE_FORMAT_Z16_UNORM,
984 PIPE_FORMAT_Z24X8_UNORM,
985 PIPE_FORMAT_X8Z24_UNORM,
986 PIPE_FORMAT_Z32_UNORM,
987 PIPE_FORMAT_Z32_FLOAT
988 };
989 enum pipe_format int_formats[] = {
990 PIPE_FORMAT_R8G8B8A8_SINT
991 };
992 enum pipe_format void_formats[] = {
993 PIPE_FORMAT_NONE
994 };
995
996 consts->MaxSamples =
997 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
998 color_formats, 16,
999 PIPE_BIND_RENDER_TARGET);
1000
1001 consts->MaxImageSamples =
1002 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1003 color_formats, 16,
1004 PIPE_BIND_SHADER_IMAGE);
1005
1006 consts->MaxColorTextureSamples =
1007 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1008 color_formats, consts->MaxSamples,
1009 PIPE_BIND_SAMPLER_VIEW);
1010
1011 consts->MaxDepthTextureSamples =
1012 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1013 depth_formats, consts->MaxSamples,
1014 PIPE_BIND_SAMPLER_VIEW);
1015
1016 consts->MaxIntegerSamples =
1017 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1018 int_formats, consts->MaxSamples,
1019 PIPE_BIND_SAMPLER_VIEW);
1020
1021 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1022 consts->MaxFramebufferSamples =
1023 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1024 void_formats, 32,
1025 PIPE_BIND_RENDER_TARGET);
1026 }
1027 if (consts->MaxSamples == 1) {
1028 /* one sample doesn't really make sense */
1029 consts->MaxSamples = 0;
1030 }
1031 else if (consts->MaxSamples >= 2) {
1032 extensions->EXT_framebuffer_multisample = GL_TRUE;
1033 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1034 }
1035
1036 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1037 consts->FakeSWMSAA = GL_TRUE;
1038 extensions->EXT_framebuffer_multisample = GL_TRUE;
1039 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1040 extensions->ARB_texture_multisample = GL_TRUE;
1041 }
1042
1043 if (consts->MaxDualSourceDrawBuffers > 0 &&
1044 !options->disable_blend_func_extended)
1045 extensions->ARB_blend_func_extended = GL_TRUE;
1046
1047 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1048 extensions->ARB_timer_query) {
1049 extensions->EXT_timer_query = GL_TRUE;
1050 }
1051
1052 if (extensions->ARB_transform_feedback2 &&
1053 extensions->ARB_draw_instanced) {
1054 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1055 }
1056 if (options->force_glsl_extensions_warn)
1057 consts->ForceGLSLExtensionsWarn = 1;
1058
1059 if (options->disable_glsl_line_continuations)
1060 consts->DisableGLSLLineContinuations = 1;
1061
1062 if (options->allow_glsl_extension_directive_midshader)
1063 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1064
1065 consts->MinMapBufferAlignment =
1066 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1067
1068 if (extensions->ARB_texture_buffer_object) {
1069 consts->MaxTextureBufferSize =
1070 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1071 (1u << 31) - 1);
1072 consts->TextureBufferOffsetAlignment =
1073 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1074
1075 if (consts->TextureBufferOffsetAlignment)
1076 extensions->ARB_texture_buffer_range = GL_TRUE;
1077
1078 init_format_extensions(screen, extensions, tbo_rgb32,
1079 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1080 PIPE_BIND_SAMPLER_VIEW);
1081 }
1082
1083 extensions->OES_texture_buffer =
1084 extensions->ARB_texture_buffer_object &&
1085 extensions->ARB_texture_buffer_range &&
1086 extensions->ARB_texture_buffer_object_rgb32 &&
1087 extensions->ARB_shader_image_load_store;
1088
1089 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1090 * If the number of available texture indirections is very limited, then we
1091 * prefer to disable varying packing rather than run the risk of varying
1092 * packing preventing a shader from running.
1093 */
1094 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1095 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1096 /* We can't disable varying packing if transform feedback is available,
1097 * because transform feedback code assumes a packed varying layout.
1098 */
1099 if (!extensions->EXT_transform_feedback)
1100 consts->DisableVaryingPacking = GL_TRUE;
1101 }
1102
1103 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1104 if (consts->MaxViewports >= 16) {
1105 if (consts->GLSLVersion >= 400) {
1106 consts->ViewportBounds.Min = -32768.0;
1107 consts->ViewportBounds.Max = 32767.0;
1108 } else {
1109 consts->ViewportBounds.Min = -16384.0;
1110 consts->ViewportBounds.Max = 16383.0;
1111 }
1112 extensions->ARB_viewport_array = GL_TRUE;
1113 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1114 if (extensions->AMD_vertex_shader_layer)
1115 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1116 }
1117
1118 /* ARB_framebuffer_no_attachments */
1119 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1120 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1121 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1122 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1123 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1124
1125 /* GL_ARB_ES3_compatibility.
1126 *
1127 * Assume that ES3 is supported if GLSL 3.30 is supported.
1128 * (OpenGL 3.3 is a requirement for that extension.)
1129 */
1130 if (consts->GLSLVersion >= 330 &&
1131 /* Requirements for ETC2 emulation. */
1132 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1133 PIPE_TEXTURE_2D, 0,
1134 PIPE_BIND_SAMPLER_VIEW) &&
1135 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1136 PIPE_TEXTURE_2D, 0,
1137 PIPE_BIND_SAMPLER_VIEW) &&
1138 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1139 PIPE_TEXTURE_2D, 0,
1140 PIPE_BIND_SAMPLER_VIEW) &&
1141 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1142 PIPE_TEXTURE_2D, 0,
1143 PIPE_BIND_SAMPLER_VIEW) &&
1144 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1145 PIPE_TEXTURE_2D, 0,
1146 PIPE_BIND_SAMPLER_VIEW) &&
1147 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1148 PIPE_TEXTURE_2D, 0,
1149 PIPE_BIND_SAMPLER_VIEW)) {
1150 extensions->ARB_ES3_compatibility = GL_TRUE;
1151 }
1152
1153 #ifdef HAVE_ST_VDPAU
1154 if (screen->get_video_param &&
1155 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1156 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1157 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1158 extensions->NV_vdpau_interop = GL_TRUE;
1159 }
1160 #endif
1161
1162 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1163 PIPE_SHADER_CAP_DOUBLES) &&
1164 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1165 PIPE_SHADER_CAP_DOUBLES)) {
1166 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1167 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1168 }
1169
1170 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1171 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1172 extensions->GREMEDY_string_marker = GL_TRUE;
1173
1174 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1175 int compute_supported_irs =
1176 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1177 PIPE_SHADER_CAP_SUPPORTED_IRS);
1178 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1179 uint64_t grid_size[3], block_size[3];
1180 uint64_t max_local_size, max_threads_per_block;
1181
1182 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1183 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1184 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1185 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1186 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1187 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1188 &max_threads_per_block);
1189 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1190 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1191 &max_local_size);
1192
1193 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1194 consts->MaxComputeSharedMemorySize = max_local_size;
1195
1196 for (i = 0; i < 3; i++) {
1197 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1198 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1199 }
1200
1201 extensions->ARB_compute_shader =
1202 extensions->ARB_shader_image_load_store &&
1203 extensions->ARB_shader_atomic_counters;
1204
1205 if (extensions->ARB_compute_shader) {
1206 uint64_t max_variable_threads_per_block = 0;
1207
1208 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1209 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK,
1210 &max_variable_threads_per_block);
1211
1212 for (i = 0; i < 3; i++) {
1213 /* Clamp the values to avoid having a local work group size
1214 * greater than the maximum number of invocations.
1215 */
1216 consts->MaxComputeVariableGroupSize[i] =
1217 MIN2(consts->MaxComputeWorkGroupSize[i],
1218 max_variable_threads_per_block);
1219 }
1220 consts->MaxComputeVariableGroupInvocations =
1221 max_variable_threads_per_block;
1222
1223 extensions->ARB_compute_variable_group_size =
1224 max_variable_threads_per_block > 0;
1225 }
1226 }
1227 }
1228
1229 extensions->KHR_robustness = extensions->ARB_robust_buffer_access_behavior;
1230
1231 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1232 * there's no clean way of telling whether we would support ES 3.1 from
1233 * here, so copy the condition from compute_version_es2 here. A lot of
1234 * these are redunant, but simpler to just have a (near-)exact copy here.
1235 */
1236 extensions->ARB_ES3_1_compatibility =
1237 extensions->ARB_ES3_compatibility &&
1238 extensions->ARB_arrays_of_arrays &&
1239 extensions->ARB_compute_shader &&
1240 extensions->ARB_draw_indirect &&
1241 extensions->ARB_explicit_uniform_location &&
1242 extensions->ARB_framebuffer_no_attachments &&
1243 extensions->ARB_shader_atomic_counters &&
1244 extensions->ARB_shader_image_load_store &&
1245 extensions->ARB_shader_image_size &&
1246 extensions->ARB_shader_storage_buffer_object &&
1247 extensions->ARB_shading_language_packing &&
1248 extensions->ARB_stencil_texturing &&
1249 extensions->ARB_texture_multisample &&
1250 extensions->ARB_gpu_shader5 &&
1251 extensions->EXT_shader_integer_mix;
1252
1253 extensions->OES_texture_cube_map_array =
1254 extensions->ARB_ES3_1_compatibility &&
1255 extensions->OES_geometry_shader &&
1256 extensions->ARB_texture_cube_map_array;
1257
1258 extensions->OES_viewport_array =
1259 extensions->ARB_ES3_1_compatibility &&
1260 extensions->OES_geometry_shader &&
1261 extensions->ARB_viewport_array;
1262
1263 extensions->OES_primitive_bounding_box = extensions->ARB_ES3_1_compatibility;
1264 consts->NoPrimitiveBoundingBoxOutput = true;
1265
1266 extensions->ANDROID_extension_pack_es31a =
1267 extensions->KHR_texture_compression_astc_ldr &&
1268 extensions->KHR_blend_equation_advanced &&
1269 extensions->OES_sample_variables &&
1270 extensions->ARB_shader_image_load_store &&
1271 extensions->ARB_texture_stencil8 &&
1272 extensions->ARB_texture_multisample &&
1273 extensions->OES_copy_image &&
1274 extensions->ARB_draw_buffers_blend &&
1275 extensions->OES_geometry_shader &&
1276 extensions->ARB_gpu_shader5 &&
1277 extensions->OES_primitive_bounding_box &&
1278 extensions->ARB_tessellation_shader &&
1279 extensions->ARB_texture_border_clamp &&
1280 extensions->OES_texture_buffer &&
1281 extensions->OES_texture_cube_map_array &&
1282 extensions->EXT_texture_sRGB_decode;
1283
1284 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1285 * before overall versions are selected. Also it's actually a subset of ES
1286 * 3.2, since it doesn't require ASTC or advanced blending.
1287 */
1288 extensions->ARB_ES3_2_compatibility =
1289 extensions->ARB_ES3_1_compatibility &&
1290 extensions->KHR_robustness &&
1291 extensions->ARB_copy_image &&
1292 extensions->ARB_draw_buffers_blend &&
1293 extensions->ARB_draw_elements_base_vertex &&
1294 extensions->OES_geometry_shader &&
1295 extensions->ARB_gpu_shader5 &&
1296 extensions->ARB_sample_shading &&
1297 extensions->ARB_tessellation_shader &&
1298 extensions->ARB_texture_border_clamp &&
1299 extensions->OES_texture_buffer &&
1300 extensions->ARB_texture_cube_map_array &&
1301 extensions->ARB_texture_stencil8 &&
1302 extensions->ARB_texture_multisample;
1303 }
1304