st_extensions.c 69.1 KB
Newer Older
1 2
/**************************************************************************
 * 
Jose Fonseca's avatar
Jose Fonseca committed
3
 * Copyright 2007 VMware, Inc.
4
 * Copyright (c) 2008 VMware, Inc.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
Jose Fonseca's avatar
Jose Fonseca committed
22
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 24 25 26 27 28
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

29 30
#include "compiler/nir/nir.h"

31 32 33
#include "main/imports.h"
#include "main/context.h"
#include "main/macros.h"
34
#include "main/version.h"
35 36 37

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
38
#include "pipe/p_screen.h"
39
#include "tgsi/tgsi_from_mesa.h"
40
#include "util/u_math.h"
41 42

#include "st_context.h"
Rob Clark's avatar
Rob Clark committed
43
#include "st_debug.h"
44
#include "st_extensions.h"
45
#include "st_format.h"
46

47 48 49 50 51 52

/*
 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
 * avoid evaluating arguments (which are often function calls) more than once.
 */

53
static unsigned _min(unsigned a, unsigned b)
54 55 56 57
{
   return (a < b) ? a : b;
}

58
static float _maxf(float a, float b)
59 60 61 62
{
   return (a > b) ? a : b;
}

63
static int _clamp(int a, int min, int max)
64
{
65 66 67 68 69 70
   if (a < min)
      return min;
   else if (a > max)
      return max;
   else
      return a;
71 72 73
}


74 75 76 77
/**
 * Query driver to get implementation limits.
 * Note that we have to limit/clamp against Mesa's internal limits too.
 */
78
void st_init_limits(struct pipe_screen *screen,
79
                    struct gl_constants *c, struct gl_extensions *extensions)
80
{
81
   int supported_irs;
82
   unsigned sh;
83
   bool can_ubo = true;
84
   int temp;
85

86 87
   c->MaxTextureSize = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
   c->MaxTextureSize = MIN2(c->MaxTextureSize, 1 << (MAX_TEXTURE_LEVELS - 1));
88

89
   c->Max3DTextureLevels
90
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
91
            MAX_3D_TEXTURE_LEVELS);
92

93
   c->MaxCubeTextureLevels
94
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
95
            MAX_CUBE_TEXTURE_LEVELS);
96

97
   c->MaxTextureRectSize = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
98

99 100 101
   c->MaxArrayTextureLayers
      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);

102 103 104 105 106 107 108 109
   /* Define max viewport size and max renderbuffer size in terms of
    * max texture size (note: max tex RECT size = max tex 2D size).
    * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
    */
   c->MaxViewportWidth =
   c->MaxViewportHeight =
   c->MaxRenderbufferSize = c->MaxTextureRectSize;

110
   c->SubPixelBits =
111
      screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
112 113 114
   c->ViewportSubpixelBits =
      screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);

115 116 117
   c->MaxDrawBuffers = c->MaxColorAttachments =
      _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
             1, MAX_DRAW_BUFFERS);
118

119 120 121 122 123 124 125 126 127 128 129 130 131 132
   c->MaxDualSourceDrawBuffers =
      _clamp(screen->get_param(screen,
                               PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
             0, MAX_DRAW_BUFFERS);

   c->MaxLineWidth =
      _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH));
   c->MaxLineWidthAA =
      _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA));

   c->MaxPointSize =
      _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH));
   c->MaxPointSizeAA =
      _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH_AA));
133

134 135 136 137 138
   /* these are not queryable. Note that GL basically mandates a 1.0 minimum
    * for non-aa sizes, but we can go down to 0.0 for aa points.
    */
   c->MinPointSize = 1.0f;
   c->MinPointSizeAA = 0.0f;
139

140 141 142
   c->MaxTextureMaxAnisotropy =
      _maxf(2.0f,
            screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
143

144 145
   c->MaxTextureLodBias =
      screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
146

147 148 149
   c->QuadsFollowProvokingVertexConvention =
      screen->get_param(screen,
                        PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
150

151 152
   c->MaxUniformBlockSize =
      screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
153
                               PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
154 155 156 157 158
   /* GL45-CTS.enhanced_layouts.ssb_member_invalid_offset_alignment fails if
    * this is larger than INT_MAX - 100. Use a nicely aligned limit.
    */
   c->MaxUniformBlockSize = MIN2(c->MaxUniformBlockSize, INT_MAX - 127);

159
   if (c->MaxUniformBlockSize < 16384) {
160
      can_ubo = false;
161 162
   }

163 164
   for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options;
165
      struct gl_program_constants *pc;
166 167 168 169 170 171
      const nir_shader_compiler_options *nir_options = NULL;

      if (screen->get_compiler_options) {
         nir_options = (const nir_shader_compiler_options *)
            screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
      }
172

173 174 175 176
      const gl_shader_stage stage = tgsi_processor_to_shader_stage(sh);
      pc = &c->Program[stage];
      options = &c->ShaderCompilerOptions[stage];
      c->ShaderCompilerOptions[stage].NirOptions = nir_options;
177

178
      if (sh == PIPE_SHADER_COMPUTE) {
179 180 181 182
         if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
            continue;
         supported_irs =
            screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
183 184
         if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
                                (1 << PIPE_SHADER_IR_NIR))))
185
            continue;
186 187
      }

188 189 190 191 192
      pc->MaxTextureImageUnits =
         _min(screen->get_shader_param(screen, sh,
                                       PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
              MAX_TEXTURE_IMAGE_UNITS);

193 194
      pc->MaxInstructions =
      pc->MaxNativeInstructions =
195
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
196 197 198 199 200 201 202 203 204 205 206 207 208 209
      pc->MaxAluInstructions =
      pc->MaxNativeAluInstructions =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
      pc->MaxTexInstructions =
      pc->MaxNativeTexInstructions =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
      pc->MaxTexIndirections =
      pc->MaxNativeTexIndirections =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
      pc->MaxAttribs =
      pc->MaxNativeAttribs =
210
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
211 212
      pc->MaxTemps =
      pc->MaxNativeTemps =
213
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
214 215
      pc->MaxAddressRegs =
      pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
216 217

      pc->MaxUniformComponents =
218
         screen->get_shader_param(screen, sh,
219 220 221 222
                                  PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
      pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
                                      MAX_UNIFORMS * 4);

223 224 225 226 227
      /* For ARB programs, prog_src_register::Index is a signed 13-bit number.
       * This gives us a limit of 4096 values - but we may need to generate
       * internal values in addition to what the source program uses.  So, we
       * drop the limit one step lower, to 2048, to be safe.
       */
228
      pc->MaxParameters =
229
      pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
230 231 232 233
      pc->MaxInputComponents =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS) * 4;
      pc->MaxOutputComponents =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_OUTPUTS) * 4;
234 235 236


      pc->MaxUniformBlocks =
237 238
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
239 240
      if (pc->MaxUniformBlocks)
         pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
241
      pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
242

243 244 245
      pc->MaxCombinedUniformComponents =
         pc->MaxUniformComponents +
         (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
246

247 248 249 250
      pc->MaxShaderStorageBlocks =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);

251 252 253 254 255 256 257 258
      temp = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS);
      if (temp) {
         /*
          * for separate atomic counters get the actual hw limits
          * per stage on atomic counters and buffers
          */
         pc->MaxAtomicCounters = temp;
         pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
259
      } else if (pc->MaxShaderStorageBlocks) {
260
         pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
261 262 263 264 265 266
         /*
          * without separate atomic counters, reserve half of the available
          * SSBOs for atomic buffers, and the other half for normal SSBOs.
          */
         pc->MaxAtomicBuffers = pc->MaxShaderStorageBlocks / 2;
         pc->MaxShaderStorageBlocks -= pc->MaxAtomicBuffers;
267
      }
268 269 270
      pc->MaxImageUniforms = screen->get_shader_param(
            screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);

271 272 273
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
274 275
      pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
      pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
276

277 278 279 280 281 282 283
      if (screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INTEGERS)) {
         pc->LowInt.RangeMin = 31;
         pc->LowInt.RangeMax = 30;
         pc->LowInt.Precision = 0;
         pc->MediumInt = pc->HighInt = pc->LowInt;
      }

284
      /* TODO: make these more fine-grained if anyone needs it */
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
      options->MaxIfDepth =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
      options->EmitNoLoops =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
      options->EmitNoMainReturn =
         !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);

      options->EmitNoCont =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);

      options->EmitNoIndirectInput =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
      options->EmitNoIndirectOutput =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
      options->EmitNoIndirectTemp =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
      options->EmitNoIndirectUniform =
         !screen->get_shader_param(screen, sh,
                                   PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
310

311 312
      if (pc->MaxNativeInstructions &&
          (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
313
         can_ubo = false;
314 315
      }

Brian Paul's avatar
Brian Paul committed
316
      if (options->EmitNoLoops)
317 318 319 320
         options->MaxUnrollIterations =
            MIN2(screen->get_shader_param(screen, sh,
                                          PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
                 65536);
321
      else
322 323 324
         options->MaxUnrollIterations =
            screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
325

326 327 328
      if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
         options->LowerCombinedClipCullDistance = true;

329 330 331 332 333 334 335
      bool prefer_nir = PIPE_SHADER_IR_NIR ==
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);

      /* NIR can do the lowering on our behalf and we'll get better results
       * because it can actually optimize SSBO access.
       */
      options->LowerBufferInterfaceBlocks = !prefer_nir;
336
   }
337

338 339 340 341 342 343 344
   c->MaxUserAssignableUniformLocations =
      c->Program[MESA_SHADER_VERTEX].MaxUniformComponents +
      c->Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents +
      c->Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents +
      c->Program[MESA_SHADER_GEOMETRY].MaxUniformComponents +
      c->Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;

345 346
   c->GLSLOptimizeConservatively =
      screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
347 348
   c->GLSLLowerConstArrays =
      screen->get_param(screen, PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF);
349 350
   c->GLSLTessLevelsAsInputs =
      screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
351 352
   c->LowerTessLevel =
      !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
353 354
   c->LowerCsDerivedVariables =
      !screen->get_param(screen, PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED);
355 356
   c->PrimitiveRestartForPatches =
      screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
357

358 359
   c->MaxCombinedTextureImageUnits =
         _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
360 361
              c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
              c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
362
              c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
363 364
              c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
              c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
365 366
              MAX_COMBINED_TEXTURE_IMAGE_UNITS);

367 368
   /* This depends on program constants. */
   c->MaxTextureCoordUnits
369 370
      = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
             MAX_TEXTURE_COORD_UNITS);
371

372 373 374
   c->MaxTextureUnits =
      _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
           c->MaxTextureCoordUnits);
375

376 377
   c->Program[MESA_SHADER_VERTEX].MaxAttribs =
      MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
378

379
   c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
380
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
381 382 383 384
   c->MaxGeometryOutputVertices =
      screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
   c->MaxGeometryTotalOutputComponents =
      screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
385 386
   c->MaxGeometryShaderInvocations =
      screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
387
   c->MaxTessPatchComponents =
388
      MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
389
           MAX_VARYING) * 4;
390

391 392 393 394
   c->MinProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
   c->MaxProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
395

396 397 398 399 400 401
   c->MaxProgramTextureGatherComponents =
      screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
   c->MinProgramTextureGatherOffset =
      screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
   c->MaxProgramTextureGatherOffset =
      screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);
402

403
   c->MaxTransformFeedbackBuffers =
404
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
405 406
   c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
                                         MAX_FEEDBACK_BUFFERS);
407 408 409
   c->MaxTransformFeedbackSeparateComponents =
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
   c->MaxTransformFeedbackInterleavedComponents =
410 411
      screen->get_param(screen,
                        PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
412 413 414 415 416
   c->MaxVertexStreams =
      MAX2(1, screen->get_param(screen, PIPE_CAP_MAX_VERTEX_STREAMS));

   /* The vertex stream must fit into pipe_stream_output_info::stream */
   assert(c->MaxVertexStreams <= 4);
417

418 419 420
   c->MaxVertexAttribStride
      = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);

421 422 423 424 425 426
   /* The value cannot be larger than that since pipe_vertex_buffer::src_offset
    * is only 16 bits.
    */
   temp = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET);
   c->MaxVertexAttribRelativeOffset = MIN2(0xffff, temp);

427
   c->StripTextureBorder = GL_TRUE;
428 429 430 431

   c->GLSLSkipStrictMaxUniformLimitCheck =
      screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS);

432 433 434
   c->UniformBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);

435
   if (can_ubo) {
436
      extensions->ARB_uniform_buffer_object = GL_TRUE;
437
      c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
438
         c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
439 440
         c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
         c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
441
         c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
442 443
         c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
         c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
444
      assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
445
   }
446 447 448

   c->GLSLFragCoordIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
449 450
   c->GLSLPointCoordIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL);
451 452
   c->GLSLFrontFacingIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
453

454 455
   /* GL_ARB_get_program_binary */
   if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
456 457
      c->NumProgramBinaryFormats = 1;

458
   c->MaxAtomicBufferBindings =
459 460 461
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
   c->MaxAtomicBufferSize =
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
462

463 464 465 466 467
   c->MaxCombinedAtomicBuffers =
      MIN2(screen->get_param(screen,
                             PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
           MAX_COMBINED_ATOMIC_BUFFERS);
   if (!c->MaxCombinedAtomicBuffers) {
468
      c->MaxCombinedAtomicBuffers =
469 470 471 472 473
         c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
         c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
         c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
         c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
         c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
474 475
      assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
   }
476

477 478 479 480 481
   c->MaxCombinedAtomicCounters =
      screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
   if (!c->MaxCombinedAtomicCounters)
      c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;

482
   if (c->MaxCombinedAtomicBuffers > 0) {
483
      extensions->ARB_shader_atomic_counters = GL_TRUE;
484 485
      extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
   }
486 487 488 489 490

   c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
   c->ShaderStorageBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
   if (c->ShaderStorageBufferOffsetAlignment) {
491 492 493 494
      c->MaxCombinedShaderStorageBlocks =
         MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
              MAX_COMBINED_SHADER_STORAGE_BUFFERS);
      if (!c->MaxCombinedShaderStorageBlocks) {
495 496 497 498 499 500 501 502 503 504
         c->MaxCombinedShaderStorageBlocks =
            c->Program[MESA_SHADER_VERTEX].MaxShaderStorageBlocks +
            c->Program[MESA_SHADER_TESS_CTRL].MaxShaderStorageBlocks +
            c->Program[MESA_SHADER_TESS_EVAL].MaxShaderStorageBlocks +
            c->Program[MESA_SHADER_GEOMETRY].MaxShaderStorageBlocks +
            c->Program[MESA_SHADER_FRAGMENT].MaxShaderStorageBlocks;
         assert(c->MaxCombinedShaderStorageBlocks < MAX_COMBINED_SHADER_STORAGE_BUFFERS);
      }
      c->MaxShaderStorageBufferBindings = c->MaxCombinedShaderStorageBlocks;

505 506
      c->MaxCombinedShaderOutputResources +=
         c->MaxCombinedShaderStorageBlocks;
507 508
      c->MaxShaderStorageBlockSize =
         screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
509
      extensions->ARB_shader_storage_buffer_object = GL_TRUE;
510
   }
511 512 513 514 515 516

   c->MaxCombinedImageUniforms =
         c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
         c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
         c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
         c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
517 518
         c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
         c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
519
   c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
520 521 522 523 524
   c->MaxImageUnits = MAX_IMAGE_UNITS;
   if (c->MaxCombinedImageUniforms) {
      extensions->ARB_shader_image_load_store = GL_TRUE;
      extensions->ARB_shader_image_size = GL_TRUE;
   }
525 526 527 528 529 530 531 532 533 534 535 536

   /* ARB_framebuffer_no_attachments */
   c->MaxFramebufferWidth   = c->MaxViewportWidth;
   c->MaxFramebufferHeight  = c->MaxViewportHeight;
   /* NOTE: we cheat here a little by assuming that
    * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
    * number of layers as we need, although we technically
    * could have more the generality is not really useful
    * in practicality.
    */
   c->MaxFramebufferLayers =
      screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
537 538 539

   c->MaxWindowRectangles =
      screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
540 541 542

   c->SparseBufferPageSize =
      screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
543 544 545

   c->AllowMappedBuffersDuringExecution =
      screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
546 547 548

   c->UseSTD430AsDefaultPacking =
      screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
549

550 551 552 553 554 555 556 557 558 559
   c->MaxSubpixelPrecisionBiasBits =
      screen->get_param(screen, PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS);

   c->ConservativeRasterDilateRange[0] =
      screen->get_paramf(screen, PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE);
   c->ConservativeRasterDilateRange[1] =
      screen->get_paramf(screen, PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE);
   c->ConservativeRasterDilateGranularity =
      screen->get_paramf(screen, PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY);

560 561 562 563
   /* limit the max combined shader output resources to a driver limit */
   temp = screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES);
   if (temp > 0 && c->MaxCombinedShaderOutputResources > temp)
      c->MaxCombinedShaderOutputResources = temp;
564 565 566
}


567 568 569 570 571 572 573 574 575 576 577 578
/**
 * Given a member \c x of struct gl_extensions, return offset of
 * \c x in bytes.
 */
#define o(x) offsetof(struct gl_extensions, x)


struct st_extension_cap_mapping {
   int extension_offset;
   int cap;
};

579 580
struct st_extension_format_mapping {
   int extension_offset[2];
Ilia Mirkin's avatar
Ilia Mirkin committed
581
   enum pipe_format format[32];
582 583 584 585 586 587 588 589 590 591 592 593 594

   /* If TRUE, at least one format must be supported for the extensions to be
    * advertised. If FALSE, all the formats must be supported. */
   GLboolean need_at_least_one;
};

/**
 * Enable extensions if certain pipe formats are supported by the driver.
 * What extensions will be enabled and what formats must be supported is
 * described by the array of st_extension_format_mapping.
 *
 * target and bind_flags are passed to is_format_supported.
 */
595 596 597 598 599 600 601
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)
602
{
603
   GLboolean *extension_table = (GLboolean *) extensions;
604 605
   unsigned i;
   int j;
606 607
   int num_formats = ARRAY_SIZE(mapping->format);
   int num_ext = ARRAY_SIZE(mapping->extension_offset);
608 609 610 611 612 613 614

   for (i = 0; i < num_mappings; i++) {
      int num_supported = 0;

      /* Examine each format in the list. */
      for (j = 0; j < num_formats && mapping[i].format[j]; j++) {
         if (screen->is_format_supported(screen, mapping[i].format[j],
615
                                         target, 0, 0, bind_flags)) {
616 617 618 619 620 621 622 623 624 625 626
            num_supported++;
         }
      }

      if (!num_supported ||
          (!mapping[i].need_at_least_one && num_supported != j)) {
         continue;
      }

      /* Enable all extensions in the list. */
      for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++)
627 628 629 630 631 632 633 634 635 636 637 638
         extension_table[mapping[i].extension_offset[j]] = GL_TRUE;
   }
}


/**
 * Given a list of formats and bind flags, return the maximum number
 * of samples supported by any of those formats.
 */
static unsigned
get_max_samples_for_formats(struct pipe_screen *screen,
                            unsigned num_formats,
639
                            const enum pipe_format *formats,
640 641 642 643 644 645 646 647
                            unsigned max_samples,
                            unsigned bind)
{
   unsigned i, f;

   for (i = max_samples; i > 0; --i) {
      for (f = 0; f < num_formats; f++) {
         if (screen->is_format_supported(screen, formats[f],
648
                                         PIPE_TEXTURE_2D, i, i, bind)) {
649 650 651
            return i;
         }
      }
652
   }
653
   return 0;
654
}
655

656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675
static unsigned
get_max_samples_for_formats_advanced(struct pipe_screen *screen,
                                     unsigned num_formats,
                                     const enum pipe_format *formats,
                                     unsigned max_samples,
                                     unsigned num_storage_samples,
                                     unsigned bind)
{
   unsigned i, f;

   for (i = max_samples; i > 0; --i) {
      for (f = 0; f < num_formats; f++) {
         if (screen->is_format_supported(screen, formats[f], PIPE_TEXTURE_2D,
                                         i, num_storage_samples, bind)) {
            return i;
         }
      }
   }
   return 0;
}
676

677
/**
678 679 680 681 682
 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
 * which GL extensions are supported.
 * Quite a few extensions are always supported because they are standard
 * features or can be built on top of other gallium features.
 * Some fine tuning may still be needed.
683
 */
684 685 686
void st_init_extensions(struct pipe_screen *screen,
                        struct gl_constants *consts,
                        struct gl_extensions *extensions,
687 688
                        struct st_config_options *options,
                        gl_api api)
689
{
690
   unsigned i;
691
   GLboolean *extension_table = (GLboolean *) extensions;
692 693

   static const struct st_extension_cap_mapping cap_mapping[] = {
694
      { o(ARB_base_instance),                PIPE_CAP_START_INSTANCE                   },
695
      { o(ARB_bindless_texture),             PIPE_CAP_BINDLESS_TEXTURE                 },
696
      { o(ARB_buffer_storage),               PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT   },
697
      { o(ARB_clear_texture),                PIPE_CAP_CLEAR_TEXTURE                    },
698
      { o(ARB_clip_control),                 PIPE_CAP_CLIP_HALFZ                       },
699
      { o(ARB_color_buffer_float),           PIPE_CAP_VERTEX_COLOR_UNCLAMPED           },
700
      { o(ARB_conditional_render_inverted),  PIPE_CAP_CONDITIONAL_RENDER_INVERTED      },
701
      { o(ARB_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
702
      { o(OES_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
Dave Airlie's avatar
Dave Airlie committed
703
      { o(ARB_cull_distance),                PIPE_CAP_CULL_DISTANCE                    },
704
      { o(ARB_depth_clamp),                  PIPE_CAP_DEPTH_CLIP_DISABLE               },
705
      { o(ARB_derivative_control),           PIPE_CAP_TGSI_FS_FINE_DERIVATIVE          },
706
      { o(ARB_draw_buffers_blend),           PIPE_CAP_INDEP_BLEND_FUNC                 },
707
      { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    },
708
      { o(ARB_draw_instanced),               PIPE_CAP_TGSI_INSTANCEID                  },
709
      { o(ARB_framebuffer_object),           PIPE_CAP_MIXED_FRAMEBUFFER_SIZES          },
710
      { o(ARB_gpu_shader_int64),             PIPE_CAP_INT64                            },
711
      { o(ARB_indirect_parameters),          PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS       },
712 713 714
      { o(ARB_instanced_arrays),             PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR  },
      { o(ARB_occlusion_query),              PIPE_CAP_OCCLUSION_QUERY                  },
      { o(ARB_occlusion_query2),             PIPE_CAP_OCCLUSION_QUERY                  },
715
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS        },
716
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
717
      { o(ARB_point_sprite),                 PIPE_CAP_POINT_SPRITE                     },
718
      { o(ARB_polygon_offset_clamp),         PIPE_CAP_POLYGON_OFFSET_CLAMP             },
719
      { o(ARB_post_depth_coverage),          PIPE_CAP_POST_DEPTH_COVERAGE              },
720
      { o(ARB_query_buffer_object),          PIPE_CAP_QUERY_BUFFER_OBJECT              },
721
      { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR   },
722
      { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
723
      { o(ARB_sample_locations),             PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS    },
724
      { o(ARB_seamless_cube_map),            PIPE_CAP_SEAMLESS_CUBE_MAP                },
725
      { o(ARB_shader_ballot),                PIPE_CAP_TGSI_BALLOT                      },
726
      { o(ARB_shader_clock),                 PIPE_CAP_TGSI_CLOCK                       },
727
      { o(ARB_shader_draw_parameters),       PIPE_CAP_DRAW_PARAMETERS                  },
728
      { o(ARB_shader_group_vote),            PIPE_CAP_TGSI_VOTE                        },
729
      { o(EXT_shader_image_load_formatted),  PIPE_CAP_IMAGE_LOAD_FORMATTED             },
730
      { o(EXT_shader_image_load_store),      PIPE_CAP_TGSI_ATOMINC_WRAP                },
731
      { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
732
      { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS                        },
733
      { o(ARB_shader_texture_lod),           PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD      },
734
      { o(ARB_sparse_buffer),                PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE          },
735
      { o(ARB_texture_buffer_object),        PIPE_CAP_TEXTURE_BUFFER_OBJECTS           },
736
      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
737
      { o(ARB_texture_gather),               PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS    },
738
      { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE     },
739
      { o(ARB_texture_multisample),          PIPE_CAP_TEXTURE_MULTISAMPLE              },
740
      { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
741 742
      { o(ARB_texture_query_lod),            PIPE_CAP_TEXTURE_QUERY_LOD                },
      { o(ARB_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
743
      { o(ARB_timer_query),                  PIPE_CAP_QUERY_TIMESTAMP                  },
744
      { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
745
      { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
746
      { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW           },
747
      { o(ARB_fragment_shader_interlock),    PIPE_CAP_FRAGMENT_SHADER_INTERLOCK        },
748 749

      { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
750
      { o(EXT_depth_bounds_test),            PIPE_CAP_DEPTH_BOUNDS_TEST                },
751
      { o(EXT_disjoint_timer_query),         PIPE_CAP_QUERY_TIMESTAMP                  },
752
      { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
753 754
      { o(EXT_memory_object),                PIPE_CAP_MEMOBJ                           },
      { o(EXT_memory_object_fd),             PIPE_CAP_MEMOBJ                           },
755
      { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT           },
756 757
      { o(EXT_semaphore),                    PIPE_CAP_FENCE_SIGNAL                     },
      { o(EXT_semaphore_fd),                 PIPE_CAP_FENCE_SIGNAL                     },
758
      { o(EXT_shader_samples_identical),     PIPE_CAP_SHADER_SAMPLES_IDENTICAL         },
759 760 761
      { o(EXT_texture_array),                PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS         },
      { o(EXT_texture_filter_anisotropic),   PIPE_CAP_ANISOTROPIC_FILTER               },
      { o(EXT_texture_mirror_clamp),         PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
762
      { o(EXT_texture_shadow_lod),           PIPE_CAP_TEXTURE_SHADOW_LOD               },
763 764
      { o(EXT_texture_swizzle),              PIPE_CAP_TEXTURE_SWIZZLE                  },
      { o(EXT_transform_feedback),           PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS        },
765
      { o(EXT_window_rectangles),            PIPE_CAP_MAX_WINDOW_RECTANGLES            },
766

767
      { o(AMD_depth_clamp_separate),         PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE      },
768
      { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
769
      { o(AMD_pinned_memory),                PIPE_CAP_RESOURCE_FROM_USER_MEMORY        },
770
      { o(ATI_meminfo),                      PIPE_CAP_QUERY_MEMORY_INFO                },
771 772
      { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE    },
      { o(ATI_texture_mirror_once),          PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
773
      { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
774
      { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX              },
775
      { o(MESA_tile_raster_order),           PIPE_CAP_TILE_RASTER_ORDER                },
776
      { o(NV_compute_shader_derivatives),    PIPE_CAP_COMPUTE_SHADER_DERIVATIVES       },
777
      { o(NV_conditional_render),            PIPE_CAP_CONDITIONAL_RENDER               },
778
      { o(NV_fill_rectangle),                PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE      },
779
      { o(NV_primitive_restart),             PIPE_CAP_PRIMITIVE_RESTART                },
780
      { o(NV_shader_atomic_float),           PIPE_CAP_TGSI_ATOMFADD                    },
781
      { o(NV_texture_barrier),               PIPE_CAP_TEXTURE_BARRIER                  },
782
      { o(NVX_gpu_memory_info),              PIPE_CAP_QUERY_MEMORY_INFO                },
783 784
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option. */
785

786
      { o(OES_standard_derivatives),         PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES      },
787 788
      { o(OES_texture_float_linear),         PIPE_CAP_TEXTURE_FLOAT_LINEAR             },
      { o(OES_texture_half_float_linear),    PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR        },
789
      { o(OES_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
790
   };
791

792 793
   /* Required: render target and sampler support */
   static const struct st_extension_format_mapping rendertarget_mapping[] = {
794 795 796 797 798 799
      { { o(OES_texture_float) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },

      { { o(OES_texture_half_float) },
        { PIPE_FORMAT_R16G16B16A16_FLOAT } },

800
      { { o(ARB_texture_rgb10_a2ui) },
801 802 803
        { PIPE_FORMAT_R10G10B10A2_UINT,
          PIPE_FORMAT_B10G10R10A2_UINT },
         GL_TRUE }, /* at least one format must be supported */
804

805
      { { o(EXT_sRGB) },
806
        { PIPE_FORMAT_A8B8G8R8_SRGB,
807 808
          PIPE_FORMAT_B8G8R8A8_SRGB,
          PIPE_FORMAT_R8G8B8A8_SRGB },
809 810 811 812 813 814 815 816
         GL_TRUE }, /* at least one format must be supported */

      { { o(EXT_packed_float) },
        { PIPE_FORMAT_R11G11B10_FLOAT } },

      { { o(EXT_texture_integer) },
        { PIPE_FORMAT_R32G32B32A32_UINT,
          PIPE_FORMAT_R32G32B32A32_SINT } },
817 818 819 820

      { { o(ARB_texture_rg) },
        { PIPE_FORMAT_R8_UNORM,
          PIPE_FORMAT_R8G8_UNORM } },
821 822 823 824 825 826 827 828

      { { o(EXT_render_snorm) },
        { PIPE_FORMAT_R8_SNORM,
          PIPE_FORMAT_R8G8_SNORM,
          PIPE_FORMAT_R8G8B8A8_SNORM,
          PIPE_FORMAT_R16_SNORM,
          PIPE_FORMAT_R16G16_SNORM,
          PIPE_FORMAT_R16G16B16A16_SNORM } },
829 830
   };

831 832 833 834 835 836
   /* Required: render target, sampler, and blending */
   static const struct st_extension_format_mapping rt_blendable[] = {
      { { o(EXT_float_blend) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },
   };

837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
   /* Required: depth stencil and sampler support */
   static const struct st_extension_format_mapping depthstencil_mapping[] = {
      { { o(ARB_depth_buffer_float) },
        { PIPE_FORMAT_Z32_FLOAT,
          PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } },
   };

   /* Required: sampler support */
   static const struct st_extension_format_mapping texture_mapping[] = {
      { { o(ARB_texture_compression_rgtc) },
        { PIPE_FORMAT_RGTC1_UNORM,
          PIPE_FORMAT_RGTC1_SNORM,
          PIPE_FORMAT_RGTC2_UNORM,
          PIPE_FORMAT_RGTC2_SNORM } },

      { { o(EXT_texture_compression_latc) },
        { PIPE_FORMAT_LATC1_UNORM,
          PIPE_FORMAT_LATC1_SNORM,
          PIPE_FORMAT_LATC2_UNORM,
          PIPE_FORMAT_LATC2_SNORM } },

      { { o(EXT_texture_compression_s3tc),
859
          o(ANGLE_texture_compression_dxt) },
860 861 862 863 864
        { PIPE_FORMAT_DXT1_RGB,
          PIPE_FORMAT_DXT1_RGBA,
          PIPE_FORMAT_DXT3_RGBA,
          PIPE_FORMAT_DXT5_RGBA } },

865 866 867 868 869 870
      { { o(EXT_texture_compression_s3tc_srgb) },
        { PIPE_FORMAT_DXT1_SRGB,
          PIPE_FORMAT_DXT1_SRGBA,
          PIPE_FORMAT_DXT3_SRGBA,
          PIPE_FORMAT_DXT5_SRGBA } },

871 872 873 874 875 876
      { { o(ARB_texture_compression_bptc) },
        { PIPE_FORMAT_BPTC_RGBA_UNORM,
          PIPE_FORMAT_BPTC_SRGBA,
          PIPE_FORMAT_BPTC_RGB_FLOAT,
          PIPE_FORMAT_BPTC_RGB_UFLOAT } },

877 878
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
Ilia Mirkin's avatar
Ilia Mirkin committed
879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907
        { PIPE_FORMAT_ASTC_4x4,
          PIPE_FORMAT_ASTC_5x4,
          PIPE_FORMAT_ASTC_5x5,
          PIPE_FORMAT_ASTC_6x5,
          PIPE_FORMAT_ASTC_6x6,
          PIPE_FORMAT_ASTC_8x5,
          PIPE_FORMAT_ASTC_8x6,
          PIPE_FORMAT_ASTC_8x8,
          PIPE_FORMAT_ASTC_10x5,
          PIPE_FORMAT_ASTC_10x6,
          PIPE_FORMAT_ASTC_10x8,
          PIPE_FORMAT_ASTC_10x10,
          PIPE_FORMAT_ASTC_12x10,
          PIPE_FORMAT_ASTC_12x12,
          PIPE_FORMAT_ASTC_4x4_SRGB,
          PIPE_FORMAT_ASTC_5x4_SRGB,
          PIPE_FORMAT_ASTC_5x5_SRGB,
          PIPE_FORMAT_ASTC_6x5_SRGB,
          PIPE_FORMAT_ASTC_6x6_SRGB,
          PIPE_FORMAT_ASTC_8x5_SRGB,
          PIPE_FORMAT_ASTC_8x6_SRGB,
          PIPE_FORMAT_ASTC_8x8_SRGB,
          PIPE_FORMAT_ASTC_10x5_SRGB,
          PIPE_FORMAT_ASTC_10x6_SRGB,
          PIPE_FORMAT_ASTC_10x8_SRGB,
          PIPE_FORMAT_ASTC_10x10_SRGB,
          PIPE_FORMAT_ASTC_12x10_SRGB,
          PIPE_FORMAT_ASTC_12x12_SRGB } },

908
      /* ASTC software fallback support. */
909 910
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
911 912 913
        { PIPE_FORMAT_R8G8B8A8_UNORM,
          PIPE_FORMAT_R8G8B8A8_SRGB } },

914 915 916 917 918 919 920 921 922
      { { o(EXT_texture_shared_exponent) },
        { PIPE_FORMAT_R9G9B9E5_FLOAT } },

      { { o(EXT_texture_snorm) },
        { PIPE_FORMAT_R8G8B8A8_SNORM } },

      { { o(EXT_texture_sRGB),
          o(EXT_texture_sRGB_decode) },
        { PIPE_FORMAT_A8B8G8R8_SRGB,
923 924 925
	  PIPE_FORMAT_B8G8R8A8_SRGB,
	  PIPE_FORMAT_A8R8G8B8_SRGB,
	  PIPE_FORMAT_R8G8B8A8_SRGB},
926 927
        GL_TRUE }, /* at least one format must be supported */

928 929 930 931
      { { o(EXT_texture_sRGB_R8) },
        { PIPE_FORMAT_R8_SRGB },
        GL_TRUE },

932 933 934 935 936
      { { o(EXT_texture_type_2_10_10_10_REV) },
        { PIPE_FORMAT_R10G10B10A2_UNORM,
          PIPE_FORMAT_B10G10R10A2_UNORM },
         GL_TRUE }, /* at least one format must be supported */

937 938 939 940 941 942 943 944 945
      { { o(ATI_texture_compression_3dc) },
        { PIPE_FORMAT_LATC2_UNORM } },

      { { o(MESA_ycbcr_texture) },
        { PIPE_FORMAT_UYVY,
          PIPE_FORMAT_YUYV },
        GL_TRUE }, /* at least one format must be supported */

      { { o(OES_compressed_ETC1_RGB8_texture) },
946 947 948
        { PIPE_FORMAT_ETC1_RGB8,
          PIPE_FORMAT_R8G8B8A8_UNORM },
        GL_TRUE }, /* at least one format must be supported */
949

950 951
      { { o(ARB_stencil_texturing),
          o(ARB_texture_stencil8) },
952 953 954
        { PIPE_FORMAT_X24S8_UINT,
          PIPE_FORMAT_S8X24_UINT },
        GL_TRUE }, /* at least one format must be supported */
Jonathan Marek's avatar
Jonathan Marek committed
955 956 957 958 959

      { { o(AMD_compressed_ATC_texture) },
        { PIPE_FORMAT_ATC_RGB,
          PIPE_FORMAT_ATC_RGBA_EXPLICIT,
          PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
960 961 962 963
   };

   /* Required: vertex fetch support. */
   static const struct st_extension_format_mapping vertex_mapping[] = {
964 965
      { { o(EXT_vertex_array_bgra) },
        { PIPE_FORMAT_B8G8R8A8_UNORM } },
966 967 968 969 970 971 972 973 974
      { { o(ARB_vertex_type_2_10_10_10_rev) },
        { PIPE_FORMAT_R10G10B10A2_UNORM,
          PIPE_FORMAT_B10G10R10A2_UNORM,
          PIPE_FORMAT_R10G10B10A2_SNORM,
          PIPE_FORMAT_B10G10R10A2_SNORM,
          PIPE_FORMAT_R10G10B10A2_USCALED,
          PIPE_FORMAT_B10G10R10A2_USCALED,
          PIPE_FORMAT_R10G10B10A2_SSCALED,
          PIPE_FORMAT_B10G10R10A2_SSCALED } },
975 976
      { { o(ARB_vertex_type_10f_11f_11f_rev) },
        { PIPE_FORMAT_R11G11B10_FLOAT } },
977 978
   };

979 980 981 982 983 984 985 986
   static const struct st_extension_format_mapping tbo_rgb32[] = {
      { {o(ARB_texture_buffer_object_rgb32) },
        { PIPE_FORMAT_R32G32B32_FLOAT,
          PIPE_FORMAT_R32G32B32_UINT,
          PIPE_FORMAT_R32G32B32_SINT,
        } },
   };

987 988 989
   /*
    * Extensions that are supported by all Gallium drivers:
    */
990
   extensions->ARB_ES2_compatibility = GL_TRUE;
991
   extensions->ARB_depth_texture = GL_TRUE;
992 993 994 995 996
   extensions->ARB_draw_elements_base_vertex = GL_TRUE;
   extensions->ARB_explicit_attrib_location = GL_TRUE;
   extensions->ARB_explicit_uniform_location = GL_TRUE;
   extensions->ARB_fragment_coord_conventions = GL_TRUE;
   extensions->ARB_fragment_program = GL_TRUE;
997
   extensions->ARB_fragment_program_shadow = GL_TRUE;
998 999 1000
   extensions->ARB_fragment_shader = GL_TRUE;
   extensions->ARB_half_float_vertex = GL_TRUE;
   extensions->ARB_internalformat_query = GL_TRUE;