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gallium: add a cap for VIEWPORT_SUBPIXEL_BITS (v2)
[mesa.git] / src / mesa / state_tracker / st_extensions.c
1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * Copyright (c) 2008 VMware, Inc.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 #include "main/imports.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/version.h"
33
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_math.h"
38
39 #include "st_context.h"
40 #include "st_debug.h"
41 #include "st_extensions.h"
42 #include "st_format.h"
43
44
45 /*
46 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
47 * avoid evaluating arguments (which are often function calls) more than once.
48 */
49
50 static unsigned _min(unsigned a, unsigned b)
51 {
52 return (a < b) ? a : b;
53 }
54
55 static float _maxf(float a, float b)
56 {
57 return (a > b) ? a : b;
58 }
59
60 static int _clamp(int a, int min, int max)
61 {
62 if (a < min)
63 return min;
64 else if (a > max)
65 return max;
66 else
67 return a;
68 }
69
70
71 /**
72 * Query driver to get implementation limits.
73 * Note that we have to limit/clamp against Mesa's internal limits too.
74 */
75 void st_init_limits(struct pipe_screen *screen,
76 struct gl_constants *c, struct gl_extensions *extensions)
77 {
78 int supported_irs;
79 unsigned sh;
80 boolean can_ubo = TRUE;
81
82 c->MaxTextureLevels
83 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
84 MAX_TEXTURE_LEVELS);
85
86 c->Max3DTextureLevels
87 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
88 MAX_3D_TEXTURE_LEVELS);
89
90 c->MaxCubeTextureLevels
91 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
92 MAX_CUBE_TEXTURE_LEVELS);
93
94 c->MaxTextureRectSize
95 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
96
97 c->MaxArrayTextureLayers
98 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
99
100 /* Define max viewport size and max renderbuffer size in terms of
101 * max texture size (note: max tex RECT size = max tex 2D size).
102 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
103 */
104 c->MaxViewportWidth =
105 c->MaxViewportHeight =
106 c->MaxRenderbufferSize = c->MaxTextureRectSize;
107
108 c->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 options->EmitNoNoise = TRUE;
267
268 /* TODO: make these more fine-grained if anyone needs it */
269 options->MaxIfDepth =
270 screen->get_shader_param(screen, sh,
271 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
272 options->EmitNoLoops =
273 !screen->get_shader_param(screen, sh,
274 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
275 options->EmitNoFunctions =
276 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
277 options->EmitNoMainReturn =
278 !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
279
280 options->EmitNoCont =
281 !screen->get_shader_param(screen, sh,
282 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
283
284 options->EmitNoIndirectInput =
285 !screen->get_shader_param(screen, sh,
286 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
287 options->EmitNoIndirectOutput =
288 !screen->get_shader_param(screen, sh,
289 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
290 options->EmitNoIndirectTemp =
291 !screen->get_shader_param(screen, sh,
292 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
293 options->EmitNoIndirectUniform =
294 !screen->get_shader_param(screen, sh,
295 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
296
297 if (pc->MaxNativeInstructions &&
298 (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
299 can_ubo = FALSE;
300 }
301
302 if (options->EmitNoLoops)
303 options->MaxUnrollIterations =
304 MIN2(screen->get_shader_param(screen, sh,
305 PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
306 65536);
307 else
308 options->MaxUnrollIterations =
309 screen->get_shader_param(screen, sh,
310 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
311
312 options->LowerCombinedClipCullDistance = true;
313 options->LowerBufferInterfaceBlocks = true;
314
315 if (sh == PIPE_SHADER_COMPUTE)
316 options->LowerShaderSharedVariables = true;
317 }
318
319 c->LowerTessLevel = true;
320 c->LowerCsDerivedVariables = true;
321 c->PrimitiveRestartForPatches =
322 screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
323
324 c->MaxCombinedTextureImageUnits =
325 _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
326 c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
327 c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
328 c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
329 c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
330 c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
331 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
332
333 /* This depends on program constants. */
334 c->MaxTextureCoordUnits
335 = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
336 MAX_TEXTURE_COORD_UNITS);
337
338 c->MaxTextureUnits =
339 _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
340 c->MaxTextureCoordUnits);
341
342 c->Program[MESA_SHADER_VERTEX].MaxAttribs =
343 MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
344
345 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
346 * of inputs. It's always 2 colors + N generic inputs. */
347 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
348 PIPE_SHADER_CAP_MAX_INPUTS);
349 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
350 c->MaxGeometryOutputVertices =
351 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
352 c->MaxGeometryTotalOutputComponents =
353 screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
354 c->MaxTessPatchComponents =
355 MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
356 MAX_VARYING) * 4;
357
358 c->MinProgramTexelOffset =
359 screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
360 c->MaxProgramTexelOffset =
361 screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
362
363 c->MaxProgramTextureGatherComponents =
364 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
365 c->MinProgramTextureGatherOffset =
366 screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
367 c->MaxProgramTextureGatherOffset =
368 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
369
370 c->MaxTransformFeedbackBuffers =
371 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
372 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
373 MAX_FEEDBACK_BUFFERS);
374 c->MaxTransformFeedbackSeparateComponents =
375 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
376 c->MaxTransformFeedbackInterleavedComponents =
377 screen->get_param(screen,
378 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
379 c->MaxVertexStreams =
380 MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));
381
382 /* The vertex stream must fit into pipe_stream_output_info::stream */
383 assert(c->MaxVertexStreams <= 4);
384
385 c->MaxVertexAttribStride
386 = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
387
388 c->StripTextureBorder = GL_TRUE;
389
390 c->GLSLSkipStrictMaxUniformLimitCheck =
391 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);
392
393 c->UniformBufferOffsetAlignment =
394 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
395
396 if (can_ubo) {
397 extensions->ARB_uniform_buffer_object = GL_TRUE;
398 c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
399 c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
400 c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
401 c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
402 c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
403 c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
404 c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
405 assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
406 }
407
408 c->GLSLFragCoordIsSysVal =
409 screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
410 c->GLSLFrontFacingIsSysVal =
411 screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
412
413 c->MaxAtomicBufferBindings =
414 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
415 c->MaxCombinedAtomicBuffers =
416 c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
417 c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
418 c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
419 c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
420 c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
421 assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
422
423 if (c->MaxCombinedAtomicBuffers > 0) {
424 extensions->ARB_shader_atomic_counters = GL_TRUE;
425 extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
426 }
427
428 c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
429 c->ShaderStorageBufferOffsetAlignment =
430 screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
431 if (c->ShaderStorageBufferOffsetAlignment) {
432 c->MaxCombinedShaderStorageBlocks = c->MaxShaderStorageBufferBindings =
433 c->MaxCombinedAtomicBuffers;
434 c->MaxCombinedShaderOutputResources +=
435 c->MaxCombinedShaderStorageBlocks;
436 c->MaxShaderStorageBlockSize = 1 << 27;
437 extensions->ARB_shader_storage_buffer_object = GL_TRUE;
438 }
439
440 c->MaxCombinedImageUniforms =
441 c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
442 c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
443 c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
444 c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
445 c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
446 c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
447 c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
448 c->MaxImageUnits = MAX_IMAGE_UNITS;
449 if (c->MaxCombinedImageUniforms) {
450 extensions->ARB_shader_image_load_store = GL_TRUE;
451 extensions->ARB_shader_image_size = GL_TRUE;
452 }
453
454 /* ARB_framebuffer_no_attachments */
455 c->MaxFramebufferWidth = c->MaxViewportWidth;
456 c->MaxFramebufferHeight = c->MaxViewportHeight;
457 /* NOTE: we cheat here a little by assuming that
458 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
459 * number of layers as we need, although we technically
460 * could have more the generality is not really useful
461 * in practicality.
462 */
463 c->MaxFramebufferLayers =
464 screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
465
466 c->MaxWindowRectangles =
467 screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
468 }
469
470
471 /**
472 * Given a member \c x of struct gl_extensions, return offset of
473 * \c x in bytes.
474 */
475 #define o(x) offsetof(struct gl_extensions, x)
476
477
478 struct st_extension_cap_mapping {
479 int extension_offset;
480 int cap;
481 };
482
483 struct st_extension_format_mapping {
484 int extension_offset[2];
485 enum pipe_format format[32];
486
487 /* If TRUE, at least one format must be supported for the extensions to be
488 * advertised. If FALSE, all the formats must be supported. */
489 GLboolean need_at_least_one;
490 };
491
492 /**
493 * Enable extensions if certain pipe formats are supported by the driver.
494 * What extensions will be enabled and what formats must be supported is
495 * described by the array of st_extension_format_mapping.
496 *
497 * target and bind_flags are passed to is_format_supported.
498 */
499 static void
500 init_format_extensions(struct pipe_screen *screen,
501 struct gl_extensions *extensions,
502 const struct st_extension_format_mapping *mapping,
503 unsigned num_mappings,
504 enum pipe_texture_target target,
505 unsigned bind_flags)
506 {
507 GLboolean *extension_table = (GLboolean *) extensions;
508 unsigned i;
509 int j;
510 int num_formats = ARRAY_SIZE(mapping->format);
511 int num_ext = ARRAY_SIZE(mapping->extension_offset);
512
513 for (i = 0; i < num_mappings; i++) {
514 int num_supported = 0;
515
516 /* Examine each format in the list. */
517 for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
518 if (screen->is_format_supported(screen, mapping[i].format[j],
519 target, 0, bind_flags)) {
520 num_supported++;
521 }
522 }
523
524 if (!num_supported ||
525 (!mapping[i].need_at_least_one && num_supported != j)) {
526 continue;
527 }
528
529 /* Enable all extensions in the list. */
530 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
531 extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
532 }
533 }
534
535
536 /**
537 * Given a list of formats and bind flags, return the maximum number
538 * of samples supported by any of those formats.
539 */
540 static unsigned
541 get_max_samples_for_formats(struct pipe_screen *screen,
542 unsigned num_formats,
543 enum pipe_format *formats,
544 unsigned max_samples,
545 unsigned bind)
546 {
547 unsigned i, f;
548
549 for (i = max_samples; i > 0; --i) {
550 for (f = 0; f < num_formats; f++) {
551 if (screen->is_format_supported(screen, formats[f],
552 PIPE_TEXTURE_2D, i, bind)) {
553 return i;
554 }
555 }
556 }
557 return 0;
558 }
559
560
561 /**
562 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
563 * which GL extensions are supported.
564 * Quite a few extensions are always supported because they are standard
565 * features or can be built on top of other gallium features.
566 * Some fine tuning may still be needed.
567 */
568 void st_init_extensions(struct pipe_screen *screen,
569 struct gl_constants *consts,
570 struct gl_extensions *extensions,
571 struct st_config_options *options,
572 boolean has_lib_dxtc)
573 {
574 unsigned i;
575 GLboolean *extension_table = (GLboolean *) extensions;
576
577 static const struct st_extension_cap_mapping cap_mapping[] = {
578 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE },
579 { o(ARB_buffer_storage), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
580 { o(ARB_clear_texture), PIPE_CAP_CLEAR_TEXTURE },
581 { o(ARB_clip_control), PIPE_CAP_CLIP_HALFZ },
582 { o(ARB_color_buffer_float), PIPE_CAP_VERTEX_COLOR_UNCLAMPED },
583 { o(ARB_conditional_render_inverted), PIPE_CAP_CONDITIONAL_RENDER_INVERTED },
584 { o(ARB_copy_image), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
585 { o(ARB_cull_distance), PIPE_CAP_CULL_DISTANCE },
586 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE },
587 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP },
588 { o(ARB_derivative_control), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE },
589 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC },
590 { o(ARB_draw_indirect), PIPE_CAP_DRAW_INDIRECT },
591 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID },
592 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
593 { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES },
594 { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS },
595 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR },
596 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY },
597 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY },
598 { o(ARB_pipeline_statistics_query), PIPE_CAP_QUERY_PIPELINE_STATISTICS },
599 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
600 { o(ARB_query_buffer_object), PIPE_CAP_QUERY_BUFFER_OBJECT },
601 { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR },
602 { o(ARB_sample_shading), PIPE_CAP_SAMPLE_SHADING },
603 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
604 { o(ARB_shader_draw_parameters), PIPE_CAP_DRAW_PARAMETERS },
605 { o(ARB_shader_group_vote), PIPE_CAP_TGSI_VOTE },
606 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
607 { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
608 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
609 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
610 { o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
611 { o(ARB_texture_cube_map_array), PIPE_CAP_CUBE_MAP_ARRAY },
612 { o(ARB_texture_gather), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS },
613 { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
614 { o(ARB_texture_multisample), PIPE_CAP_TEXTURE_MULTISAMPLE },
615 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES },
616 { o(ARB_texture_query_lod), PIPE_CAP_TEXTURE_QUERY_LOD },
617 { o(ARB_texture_view), PIPE_CAP_SAMPLER_VIEW_TARGET },
618 { o(ARB_timer_query), PIPE_CAP_QUERY_TIMESTAMP },
619 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
620 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
621
622 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
623 { o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
624 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
625 { o(EXT_polygon_offset_clamp), PIPE_CAP_POLYGON_OFFSET_CLAMP },
626 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL },
627 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS },
628 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER },
629 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
630 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE },
631 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS },
632 { o(EXT_window_rectangles), PIPE_CAP_MAX_WINDOW_RECTANGLES },
633
634 { o(AMD_pinned_memory), PIPE_CAP_RESOURCE_FROM_USER_MEMORY },
635 { o(ATI_meminfo), PIPE_CAP_QUERY_MEMORY_INFO },
636 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE },
637 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL },
638 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP },
639 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER },
640 { o(NV_primitive_restart), PIPE_CAP_PRIMITIVE_RESTART },
641 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER },
642 { o(NVX_gpu_memory_info), PIPE_CAP_QUERY_MEMORY_INFO },
643 /* GL_NV_point_sprite is not supported by gallium because we don't
644 * support the GL_POINT_SPRITE_R_MODE_NV option. */
645
646 { o(OES_standard_derivatives), PIPE_CAP_SM3 },
647 { o(OES_texture_float_linear), PIPE_CAP_TEXTURE_FLOAT_LINEAR },
648 { o(OES_texture_half_float_linear), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR },
649 };
650
651 /* Required: render target and sampler support */
652 static const struct st_extension_format_mapping rendertarget_mapping[] = {
653 { { o(ARB_texture_float) },
654 { PIPE_FORMAT_R32G32B32A32_FLOAT,
655 PIPE_FORMAT_R16G16B16A16_FLOAT } },
656
657 { { o(OES_texture_float) },
658 { PIPE_FORMAT_R32G32B32A32_FLOAT } },
659
660 { { o(OES_texture_half_float) },
661 { PIPE_FORMAT_R16G16B16A16_FLOAT } },
662
663 { { o(ARB_texture_rgb10_a2ui) },
664 { PIPE_FORMAT_R10G10B10A2_UINT,
665 PIPE_FORMAT_B10G10R10A2_UINT },
666 GL_TRUE }, /* at least one format must be supported */
667
668 { { o(EXT_framebuffer_sRGB) },
669 { PIPE_FORMAT_A8B8G8R8_SRGB,
670 PIPE_FORMAT_B8G8R8A8_SRGB },
671 GL_TRUE }, /* at least one format must be supported */
672
673 { { o(EXT_packed_float) },
674 { PIPE_FORMAT_R11G11B10_FLOAT } },
675
676 { { o(EXT_texture_integer) },
677 { PIPE_FORMAT_R32G32B32A32_UINT,
678 PIPE_FORMAT_R32G32B32A32_SINT } },
679
680 { { o(ARB_texture_rg) },
681 { PIPE_FORMAT_R8_UNORM,
682 PIPE_FORMAT_R8G8_UNORM } },
683 };
684
685 /* Required: depth stencil and sampler support */
686 static const struct st_extension_format_mapping depthstencil_mapping[] = {
687 { { o(ARB_depth_buffer_float) },
688 { PIPE_FORMAT_Z32_FLOAT,
689 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
690 };
691
692 /* Required: sampler support */
693 static const struct st_extension_format_mapping texture_mapping[] = {
694 { { o(ARB_texture_compression_rgtc) },
695 { PIPE_FORMAT_RGTC1_UNORM,
696 PIPE_FORMAT_RGTC1_SNORM,
697 PIPE_FORMAT_RGTC2_UNORM,
698 PIPE_FORMAT_RGTC2_SNORM } },
699
700 { { o(EXT_texture_compression_latc) },
701 { PIPE_FORMAT_LATC1_UNORM,
702 PIPE_FORMAT_LATC1_SNORM,
703 PIPE_FORMAT_LATC2_UNORM,
704 PIPE_FORMAT_LATC2_SNORM } },
705
706 { { o(EXT_texture_compression_s3tc),
707 o(ANGLE_texture_compression_dxt) },
708 { PIPE_FORMAT_DXT1_RGB,
709 PIPE_FORMAT_DXT1_RGBA,
710 PIPE_FORMAT_DXT3_RGBA,
711 PIPE_FORMAT_DXT5_RGBA } },
712
713 { { o(ARB_texture_compression_bptc) },
714 { PIPE_FORMAT_BPTC_RGBA_UNORM,
715 PIPE_FORMAT_BPTC_SRGBA,
716 PIPE_FORMAT_BPTC_RGB_FLOAT,
717 PIPE_FORMAT_BPTC_RGB_UFLOAT } },
718
719 { { o(KHR_texture_compression_astc_ldr) },
720 { PIPE_FORMAT_ASTC_4x4,
721 PIPE_FORMAT_ASTC_5x4,
722 PIPE_FORMAT_ASTC_5x5,
723 PIPE_FORMAT_ASTC_6x5,
724 PIPE_FORMAT_ASTC_6x6,
725 PIPE_FORMAT_ASTC_8x5,
726 PIPE_FORMAT_ASTC_8x6,
727 PIPE_FORMAT_ASTC_8x8,
728 PIPE_FORMAT_ASTC_10x5,
729 PIPE_FORMAT_ASTC_10x6,
730 PIPE_FORMAT_ASTC_10x8,
731 PIPE_FORMAT_ASTC_10x10,
732 PIPE_FORMAT_ASTC_12x10,
733 PIPE_FORMAT_ASTC_12x12,
734 PIPE_FORMAT_ASTC_4x4_SRGB,
735 PIPE_FORMAT_ASTC_5x4_SRGB,
736 PIPE_FORMAT_ASTC_5x5_SRGB,
737 PIPE_FORMAT_ASTC_6x5_SRGB,
738 PIPE_FORMAT_ASTC_6x6_SRGB,
739 PIPE_FORMAT_ASTC_8x5_SRGB,
740 PIPE_FORMAT_ASTC_8x6_SRGB,
741 PIPE_FORMAT_ASTC_8x8_SRGB,
742 PIPE_FORMAT_ASTC_10x5_SRGB,
743 PIPE_FORMAT_ASTC_10x6_SRGB,
744 PIPE_FORMAT_ASTC_10x8_SRGB,
745 PIPE_FORMAT_ASTC_10x10_SRGB,
746 PIPE_FORMAT_ASTC_12x10_SRGB,
747 PIPE_FORMAT_ASTC_12x12_SRGB } },
748
749 { { o(EXT_texture_shared_exponent) },
750 { PIPE_FORMAT_R9G9B9E5_FLOAT } },
751
752 { { o(EXT_texture_snorm) },
753 { PIPE_FORMAT_R8G8B8A8_SNORM } },
754
755 { { o(EXT_texture_sRGB),
756 o(EXT_texture_sRGB_decode) },
757 { PIPE_FORMAT_A8B8G8R8_SRGB,
758 PIPE_FORMAT_B8G8R8A8_SRGB },
759 GL_TRUE }, /* at least one format must be supported */
760
761 { { o(ATI_texture_compression_3dc) },
762 { PIPE_FORMAT_LATC2_UNORM } },
763
764 { { o(MESA_ycbcr_texture) },
765 { PIPE_FORMAT_UYVY,
766 PIPE_FORMAT_YUYV },
767 GL_TRUE }, /* at least one format must be supported */
768
769 { { o(OES_compressed_ETC1_RGB8_texture) },
770 { PIPE_FORMAT_ETC1_RGB8,
771 PIPE_FORMAT_R8G8B8A8_UNORM },
772 GL_TRUE }, /* at least one format must be supported */
773
774 { { o(ARB_stencil_texturing),
775 o(ARB_texture_stencil8) },
776 { PIPE_FORMAT_X24S8_UINT,
777 PIPE_FORMAT_S8X24_UINT },
778 GL_TRUE }, /* at least one format must be supported */
779 };
780
781 /* Required: vertex fetch support. */
782 static const struct st_extension_format_mapping vertex_mapping[] = {
783 { { o(EXT_vertex_array_bgra) },
784 { PIPE_FORMAT_B8G8R8A8_UNORM } },
785 { { o(ARB_vertex_type_2_10_10_10_rev) },
786 { PIPE_FORMAT_R10G10B10A2_UNORM,
787 PIPE_FORMAT_B10G10R10A2_UNORM,
788 PIPE_FORMAT_R10G10B10A2_SNORM,
789 PIPE_FORMAT_B10G10R10A2_SNORM,
790 PIPE_FORMAT_R10G10B10A2_USCALED,
791 PIPE_FORMAT_B10G10R10A2_USCALED,
792 PIPE_FORMAT_R10G10B10A2_SSCALED,
793 PIPE_FORMAT_B10G10R10A2_SSCALED } },
794 { { o(ARB_vertex_type_10f_11f_11f_rev) },
795 { PIPE_FORMAT_R11G11B10_FLOAT } },
796 };
797
798 static const struct st_extension_format_mapping tbo_rgb32[] = {
799 { {o(ARB_texture_buffer_object_rgb32) },
800 { PIPE_FORMAT_R32G32B32_FLOAT,
801 PIPE_FORMAT_R32G32B32_UINT,
802 PIPE_FORMAT_R32G32B32_SINT,
803 } },
804 };
805
806 /*
807 * Extensions that are supported by all Gallium drivers:
808 */
809 extensions->ARB_ES2_compatibility = GL_TRUE;
810 extensions->ARB_draw_elements_base_vertex = GL_TRUE;
811 extensions->ARB_explicit_attrib_location = GL_TRUE;
812 extensions->ARB_explicit_uniform_location = GL_TRUE;
813 extensions->ARB_fragment_coord_conventions = GL_TRUE;
814 extensions->ARB_fragment_program = GL_TRUE;
815 extensions->ARB_fragment_shader = GL_TRUE;
816 extensions->ARB_half_float_vertex = GL_TRUE;
817 extensions->ARB_internalformat_query = GL_TRUE;
818 extensions->ARB_internalformat_query2 = GL_TRUE;
819 extensions->ARB_map_buffer_range = GL_TRUE;
820 extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
821 extensions->ARB_texture_cube_map = GL_TRUE;
822 extensions->ARB_texture_env_combine = GL_TRUE;
823 extensions->ARB_texture_env_crossbar = GL_TRUE;
824 extensions->ARB_texture_env_dot3 = GL_TRUE;
825 extensions->ARB_vertex_program = GL_TRUE;
826 extensions->ARB_vertex_shader = GL_TRUE;
827
828 extensions->EXT_blend_color = GL_TRUE;
829 extensions->EXT_blend_func_separate = GL_TRUE;
830 extensions->EXT_blend_minmax = GL_TRUE;
831 extensions->EXT_gpu_program_parameters = GL_TRUE;
832 extensions->EXT_pixel_buffer_object = GL_TRUE;
833 extensions->EXT_point_parameters = GL_TRUE;
834 extensions->EXT_provoking_vertex = GL_TRUE;
835
836 extensions->EXT_texture_env_dot3 = GL_TRUE;
837
838 extensions->ATI_fragment_shader = GL_TRUE;
839 extensions->ATI_texture_env_combine3 = GL_TRUE;
840
841 extensions->MESA_pack_invert = GL_TRUE;
842
843 extensions->NV_fog_distance = GL_TRUE;
844 extensions->NV_texture_env_combine4 = GL_TRUE;
845 extensions->NV_texture_rectangle = GL_TRUE;
846
847 extensions->OES_EGL_image = GL_TRUE;
848 extensions->OES_EGL_image_external = GL_TRUE;
849 extensions->OES_draw_texture = GL_TRUE;
850
851 /* Expose the extensions which directly correspond to gallium caps. */
852 for (i = 0; i < ARRAY_SIZE(cap_mapping); i++) {
853 if (screen->get_param(screen, cap_mapping[i].cap)) {
854 extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
855 }
856 }
857
858 /* Expose the extensions which directly correspond to gallium formats. */
859 init_format_extensions(screen, extensions, rendertarget_mapping,
860 ARRAY_SIZE(rendertarget_mapping), PIPE_TEXTURE_2D,
861 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
862 init_format_extensions(screen, extensions, depthstencil_mapping,
863 ARRAY_SIZE(depthstencil_mapping), PIPE_TEXTURE_2D,
864 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
865 init_format_extensions(screen, extensions, texture_mapping,
866 ARRAY_SIZE(texture_mapping), PIPE_TEXTURE_2D,
867 PIPE_BIND_SAMPLER_VIEW);
868 init_format_extensions(screen, extensions, vertex_mapping,
869 ARRAY_SIZE(vertex_mapping), PIPE_BUFFER,
870 PIPE_BIND_VERTEX_BUFFER);
871
872 /* Figure out GLSL support and set GLSLVersion to it. */
873 consts->GLSLVersion = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);
874
875 _mesa_override_glsl_version(consts);
876
877 if (options->force_glsl_version > 0 &&
878 options->force_glsl_version <= consts->GLSLVersion) {
879 consts->ForceGLSLVersion = options->force_glsl_version;
880 }
881
882 if (consts->GLSLVersion >= 400)
883 extensions->ARB_gpu_shader5 = GL_TRUE;
884 if (consts->GLSLVersion >= 410)
885 extensions->ARB_shader_precision = GL_TRUE;
886
887 /* This extension needs full OpenGL 3.2, but we don't know if that's
888 * supported at this point. Only check the GLSL version. */
889 if (consts->GLSLVersion >= 150 &&
890 screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
891 extensions->AMD_vertex_shader_layer = GL_TRUE;
892 }
893
894 if (consts->GLSLVersion >= 130) {
895 consts->NativeIntegers = GL_TRUE;
896 consts->MaxClipPlanes = 8;
897
898 if (screen->get_param(screen, PIPE_CAP_VERTEXID_NOBASE)) {
899 consts->VertexID_is_zero_based = GL_TRUE;
900 }
901
902 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
903 extensions->ARB_conservative_depth = GL_TRUE;
904 extensions->ARB_shading_language_packing = GL_TRUE;
905 extensions->OES_depth_texture_cube_map = GL_TRUE;
906 extensions->ARB_shading_language_420pack = GL_TRUE;
907 extensions->ARB_texture_query_levels = GL_TRUE;
908 extensions->ARB_shader_subroutine = GL_TRUE;
909
910 if (!options->disable_shader_bit_encoding) {
911 extensions->ARB_shader_bit_encoding = GL_TRUE;
912 }
913
914 extensions->EXT_shader_integer_mix = GL_TRUE;
915 extensions->ARB_arrays_of_arrays = GL_TRUE;
916 extensions->MESA_shader_integer_functions = GL_TRUE;
917 } else {
918 /* Optional integer support for GLSL 1.2. */
919 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
920 PIPE_SHADER_CAP_INTEGERS) &&
921 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
922 PIPE_SHADER_CAP_INTEGERS)) {
923 consts->NativeIntegers = GL_TRUE;
924
925 extensions->EXT_shader_integer_mix = GL_TRUE;
926 }
927
928 /* Integer textures make no sense before GLSL 1.30 */
929 extensions->EXT_texture_integer = GL_FALSE;
930 }
931
932 consts->GLSLZeroInit = options->glsl_zero_init;
933
934 consts->UniformBooleanTrue = consts->NativeIntegers ? ~0U : fui(1.0f);
935
936 /* Below are the cases which cannot be moved into tables easily. */
937
938 if (!has_lib_dxtc && !options->force_s3tc_enable) {
939 extensions->EXT_texture_compression_s3tc = GL_FALSE;
940 extensions->ANGLE_texture_compression_dxt = GL_FALSE;
941 }
942
943 if (screen->get_shader_param(screen, PIPE_SHADER_TESS_CTRL,
944 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
945 extensions->ARB_tessellation_shader = GL_TRUE;
946 }
947
948 if (screen->fence_finish) {
949 extensions->ARB_sync = GL_TRUE;
950 }
951
952 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
953 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
954 */
955 extensions->OES_sample_variables = extensions->ARB_sample_shading &&
956 extensions->ARB_gpu_shader5;
957
958 /* If we don't have native ETC2 support, we don't keep track of the
959 * original ETC2 data. This is necessary to be able to copy images between
960 * compatible view classes.
961 */
962 if (extensions->ARB_copy_image && screen->is_format_supported(
963 screen, PIPE_FORMAT_ETC2_RGB8,
964 PIPE_TEXTURE_2D, 0,
965 PIPE_BIND_SAMPLER_VIEW)) {
966 extensions->OES_copy_image = GL_TRUE;
967 }
968
969 /* Maximum sample count. */
970 {
971 enum pipe_format color_formats[] = {
972 PIPE_FORMAT_R8G8B8A8_UNORM,
973 PIPE_FORMAT_B8G8R8A8_UNORM,
974 PIPE_FORMAT_A8R8G8B8_UNORM,
975 PIPE_FORMAT_A8B8G8R8_UNORM,
976 };
977 enum pipe_format depth_formats[] = {
978 PIPE_FORMAT_Z16_UNORM,
979 PIPE_FORMAT_Z24X8_UNORM,
980 PIPE_FORMAT_X8Z24_UNORM,
981 PIPE_FORMAT_Z32_UNORM,
982 PIPE_FORMAT_Z32_FLOAT
983 };
984 enum pipe_format int_formats[] = {
985 PIPE_FORMAT_R8G8B8A8_SINT
986 };
987 enum pipe_format void_formats[] = {
988 PIPE_FORMAT_NONE
989 };
990
991 consts->MaxSamples =
992 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
993 color_formats, 16,
994 PIPE_BIND_RENDER_TARGET);
995
996 consts->MaxImageSamples =
997 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
998 color_formats, 16,
999 PIPE_BIND_SHADER_IMAGE);
1000
1001 consts->MaxColorTextureSamples =
1002 get_max_samples_for_formats(screen, ARRAY_SIZE(color_formats),
1003 color_formats, consts->MaxSamples,
1004 PIPE_BIND_SAMPLER_VIEW);
1005
1006 consts->MaxDepthTextureSamples =
1007 get_max_samples_for_formats(screen, ARRAY_SIZE(depth_formats),
1008 depth_formats, consts->MaxSamples,
1009 PIPE_BIND_SAMPLER_VIEW);
1010
1011 consts->MaxIntegerSamples =
1012 get_max_samples_for_formats(screen, ARRAY_SIZE(int_formats),
1013 int_formats, consts->MaxSamples,
1014 PIPE_BIND_SAMPLER_VIEW);
1015
1016 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1017 consts->MaxFramebufferSamples =
1018 get_max_samples_for_formats(screen, ARRAY_SIZE(void_formats),
1019 void_formats, 32,
1020 PIPE_BIND_RENDER_TARGET);
1021 }
1022 if (consts->MaxSamples == 1) {
1023 /* one sample doesn't really make sense */
1024 consts->MaxSamples = 0;
1025 }
1026 else if (consts->MaxSamples >= 2) {
1027 extensions->EXT_framebuffer_multisample = GL_TRUE;
1028 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1029 }
1030
1031 if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
1032 consts->FakeSWMSAA = GL_TRUE;
1033 extensions->EXT_framebuffer_multisample = GL_TRUE;
1034 extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
1035 extensions->ARB_texture_multisample = GL_TRUE;
1036 }
1037
1038 if (consts->MaxDualSourceDrawBuffers > 0 &&
1039 !options->disable_blend_func_extended)
1040 extensions->ARB_blend_func_extended = GL_TRUE;
1041
1042 if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
1043 extensions->ARB_timer_query) {
1044 extensions->EXT_timer_query = GL_TRUE;
1045 }
1046
1047 if (extensions->ARB_transform_feedback2 &&
1048 extensions->ARB_draw_instanced) {
1049 extensions->ARB_transform_feedback_instanced = GL_TRUE;
1050 }
1051 if (options->force_glsl_extensions_warn)
1052 consts->ForceGLSLExtensionsWarn = 1;
1053
1054 if (options->disable_glsl_line_continuations)
1055 consts->DisableGLSLLineContinuations = 1;
1056
1057 if (options->allow_glsl_extension_directive_midshader)
1058 consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
1059
1060 consts->MinMapBufferAlignment =
1061 screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
1062
1063 if (extensions->ARB_texture_buffer_object) {
1064 consts->MaxTextureBufferSize =
1065 _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
1066 (1u << 31) - 1);
1067 consts->TextureBufferOffsetAlignment =
1068 screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
1069
1070 if (consts->TextureBufferOffsetAlignment)
1071 extensions->ARB_texture_buffer_range = GL_TRUE;
1072
1073 init_format_extensions(screen, extensions, tbo_rgb32,
1074 ARRAY_SIZE(tbo_rgb32), PIPE_BUFFER,
1075 PIPE_BIND_SAMPLER_VIEW);
1076 }
1077
1078 extensions->OES_texture_buffer =
1079 extensions->ARB_texture_buffer_object &&
1080 extensions->ARB_texture_buffer_range &&
1081 extensions->ARB_texture_buffer_object_rgb32 &&
1082 extensions->ARB_shader_image_load_store;
1083
1084 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1085 * If the number of available texture indirections is very limited, then we
1086 * prefer to disable varying packing rather than run the risk of varying
1087 * packing preventing a shader from running.
1088 */
1089 if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1090 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
1091 /* We can't disable varying packing if transform feedback is available,
1092 * because transform feedback code assumes a packed varying layout.
1093 */
1094 if (!extensions->EXT_transform_feedback)
1095 consts->DisableVaryingPacking = GL_TRUE;
1096 }
1097
1098 consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
1099 if (consts->MaxViewports >= 16) {
1100 if (consts->GLSLVersion >= 400) {
1101 consts->ViewportBounds.Min = -32768.0;
1102 consts->ViewportBounds.Max = 32767.0;
1103 } else {
1104 consts->ViewportBounds.Min = -16384.0;
1105 consts->ViewportBounds.Max = 16383.0;
1106 }
1107 extensions->ARB_viewport_array = GL_TRUE;
1108 extensions->ARB_fragment_layer_viewport = GL_TRUE;
1109 if (extensions->AMD_vertex_shader_layer)
1110 extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
1111 }
1112
1113 /* ARB_framebuffer_no_attachments */
1114 if (screen->get_param(screen, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT) &&
1115 ((consts->MaxSamples >= 4 && consts->MaxFramebufferLayers >= 2048) ||
1116 (consts->MaxFramebufferSamples >= consts->MaxSamples &&
1117 consts->MaxFramebufferLayers >= consts->MaxArrayTextureLayers)))
1118 extensions->ARB_framebuffer_no_attachments = GL_TRUE;
1119
1120 /* GL_ARB_ES3_compatibility.
1121 *
1122 * Assume that ES3 is supported if GLSL 3.30 is supported.
1123 * (OpenGL 3.3 is a requirement for that extension.)
1124 */
1125 if (consts->GLSLVersion >= 330 &&
1126 /* Requirements for ETC2 emulation. */
1127 screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
1128 PIPE_TEXTURE_2D, 0,
1129 PIPE_BIND_SAMPLER_VIEW) &&
1130 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
1131 PIPE_TEXTURE_2D, 0,
1132 PIPE_BIND_SAMPLER_VIEW) &&
1133 screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
1134 PIPE_TEXTURE_2D, 0,
1135 PIPE_BIND_SAMPLER_VIEW) &&
1136 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
1137 PIPE_TEXTURE_2D, 0,
1138 PIPE_BIND_SAMPLER_VIEW) &&
1139 screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
1140 PIPE_TEXTURE_2D, 0,
1141 PIPE_BIND_SAMPLER_VIEW) &&
1142 screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
1143 PIPE_TEXTURE_2D, 0,
1144 PIPE_BIND_SAMPLER_VIEW)) {
1145 extensions->ARB_ES3_compatibility = GL_TRUE;
1146 }
1147
1148 #ifdef HAVE_ST_VDPAU
1149 if (screen->get_video_param &&
1150 screen->get_video_param(screen, PIPE_VIDEO_PROFILE_UNKNOWN,
1151 PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
1152 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED)) {
1153 extensions->NV_vdpau_interop = GL_TRUE;
1154 }
1155 #endif
1156
1157 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
1158 PIPE_SHADER_CAP_DOUBLES) &&
1159 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
1160 PIPE_SHADER_CAP_DOUBLES)) {
1161 extensions->ARB_gpu_shader_fp64 = GL_TRUE;
1162 extensions->ARB_vertex_attrib_64bit = GL_TRUE;
1163 }
1164
1165 if ((ST_DEBUG & DEBUG_GREMEDY) &&
1166 screen->get_param(screen, PIPE_CAP_STRING_MARKER))
1167 extensions->GREMEDY_string_marker = GL_TRUE;
1168
1169 if (screen->get_param(screen, PIPE_CAP_COMPUTE)) {
1170 int compute_supported_irs =
1171 screen->get_shader_param(screen, PIPE_SHADER_COMPUTE,
1172 PIPE_SHADER_CAP_SUPPORTED_IRS);
1173 if (compute_supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
1174 uint64_t grid_size[3], block_size[3];
1175 uint64_t max_local_size, max_threads_per_block;
1176
1177 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1178 PIPE_COMPUTE_CAP_MAX_GRID_SIZE, grid_size);
1179 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1180 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE, block_size);
1181 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1182 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
1183 &max_threads_per_block);
1184 screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
1185 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE,
1186 &max_local_size);
1187
1188 consts->MaxComputeWorkGroupInvocations = max_threads_per_block;
1189 consts->MaxComputeSharedMemorySize = max_local_size;
1190
1191 for (i = 0; i < 3; i++) {
1192 consts->MaxComputeWorkGroupCount[i] = grid_size[i];
1193 consts->MaxComputeWorkGroupSize[i] = block_size[i];
1194 }
1195
1196 extensions->ARB_compute_shader =
1197 extensions->ARB_shader_image_load_store &&
1198 extensions->ARB_shader_atomic_counters;
1199 }
1200 }
1201
1202 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1203 * there's no clean way of telling whether we would support ES 3.1 from
1204 * here, so copy the condition from compute_version_es2 here. A lot of
1205 * these are redunant, but simpler to just have a (near-)exact copy here.
1206 */
1207 extensions->ARB_ES3_1_compatibility =
1208 extensions->ARB_ES3_compatibility &&
1209 extensions->ARB_arrays_of_arrays &&
1210 extensions->ARB_compute_shader &&
1211 extensions->ARB_draw_indirect &&
1212 extensions->ARB_explicit_uniform_location &&
1213 extensions->ARB_framebuffer_no_attachments &&
1214 extensions->ARB_shader_atomic_counters &&
1215 extensions->ARB_shader_image_load_store &&
1216 extensions->ARB_shader_image_size &&
1217 extensions->ARB_shader_storage_buffer_object &&
1218 extensions->ARB_shading_language_packing &&
1219 extensions->ARB_stencil_texturing &&
1220 extensions->ARB_texture_multisample &&
1221 extensions->ARB_gpu_shader5 &&
1222 extensions->EXT_shader_integer_mix;
1223
1224 /* And if we have enough for ES 3.1, we can also expose
1225 * OES_shader_io_blocks, which is only hidden due to the compiler not being
1226 * able to version-restrict things.
1227 */
1228 extensions->OES_shader_io_blocks = extensions->ARB_ES3_1_compatibility;
1229 }