st_extensions.c 68.5 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->GLSLTessLevelsAsInputs =
      screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
349 350
   c->LowerTessLevel =
      !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
351
   c->LowerCsDerivedVariables = true;
352 353
   c->PrimitiveRestartForPatches =
      screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
354

355 356
   c->MaxCombinedTextureImageUnits =
         _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
357 358
              c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
              c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
359
              c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
360 361
              c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
              c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
362 363
              MAX_COMBINED_TEXTURE_IMAGE_UNITS);

364 365
   /* This depends on program constants. */
   c->MaxTextureCoordUnits
366 367
      = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
             MAX_TEXTURE_COORD_UNITS);
368

369 370 371
   c->MaxTextureUnits =
      _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
           c->MaxTextureCoordUnits);
372

373 374
   c->Program[MESA_SHADER_VERTEX].MaxAttribs =
      MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
375

376
   c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
377
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
378 379 380 381
   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);
382 383
   c->MaxGeometryShaderInvocations =
      screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
384
   c->MaxTessPatchComponents =
385
      MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
386
           MAX_VARYING) * 4;
387

388 389 390 391
   c->MinProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
   c->MaxProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
392

393 394 395 396 397 398
   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);
399

400
   c->MaxTransformFeedbackBuffers =
401
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
402 403
   c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
                                         MAX_FEEDBACK_BUFFERS);
404 405 406
   c->MaxTransformFeedbackSeparateComponents =
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
   c->MaxTransformFeedbackInterleavedComponents =
407 408
      screen->get_param(screen,
                        PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
409 410 411 412 413
   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);
414

415 416 417
   c->MaxVertexAttribStride
      = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);

418 419 420 421 422 423
   /* 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);

424
   c->StripTextureBorder = GL_TRUE;
425 426 427 428

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

429 430 431
   c->UniformBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);

432
   if (can_ubo) {
433
      extensions->ARB_uniform_buffer_object = GL_TRUE;
434
      c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
435
         c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
436 437
         c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
         c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
438
         c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
439 440
         c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
         c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
441
      assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
442
   }
443 444 445 446 447

   c->GLSLFragCoordIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
   c->GLSLFrontFacingIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
448

449 450
   /* GL_ARB_get_program_binary */
   if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
451 452
      c->NumProgramBinaryFormats = 1;

453
   c->MaxAtomicBufferBindings =
454 455 456
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
   c->MaxAtomicBufferSize =
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
457

458 459 460 461 462
   c->MaxCombinedAtomicBuffers =
      MIN2(screen->get_param(screen,
                             PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
           MAX_COMBINED_ATOMIC_BUFFERS);
   if (!c->MaxCombinedAtomicBuffers) {
463
      c->MaxCombinedAtomicBuffers =
464 465 466 467 468
         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;
469 470
      assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
   }
471

472 473 474 475 476
   c->MaxCombinedAtomicCounters =
      screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
   if (!c->MaxCombinedAtomicCounters)
      c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;

477
   if (c->MaxCombinedAtomicBuffers > 0) {
478
      extensions->ARB_shader_atomic_counters = GL_TRUE;
479 480
      extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
   }
481 482 483 484 485

   c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
   c->ShaderStorageBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
   if (c->ShaderStorageBufferOffsetAlignment) {
486 487 488 489
      c->MaxCombinedShaderStorageBlocks =
         MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
              MAX_COMBINED_SHADER_STORAGE_BUFFERS);
      if (!c->MaxCombinedShaderStorageBlocks) {
490 491 492 493 494 495 496 497 498 499
         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;

500 501
      c->MaxCombinedShaderOutputResources +=
         c->MaxCombinedShaderStorageBlocks;
502 503
      c->MaxShaderStorageBlockSize =
         screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
504
      extensions->ARB_shader_storage_buffer_object = GL_TRUE;
505
   }
506 507 508 509 510 511

   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 +
512 513
         c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
         c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
514
   c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
515 516 517 518 519
   c->MaxImageUnits = MAX_IMAGE_UNITS;
   if (c->MaxCombinedImageUniforms) {
      extensions->ARB_shader_image_load_store = GL_TRUE;
      extensions->ARB_shader_image_size = GL_TRUE;
   }
520 521 522 523 524 525 526 527 528 529 530 531

   /* 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);
532 533 534

   c->MaxWindowRectangles =
      screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
535 536 537

   c->SparseBufferPageSize =
      screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
538 539 540

   c->AllowMappedBuffersDuringExecution =
      screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
541 542 543

   c->UseSTD430AsDefaultPacking =
      screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
544

545 546 547 548 549 550 551 552 553 554
   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);

555 556 557 558
   /* 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;
559 560 561
}


562 563 564 565 566 567 568 569 570 571 572 573
/**
 * 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;
};

574 575
struct st_extension_format_mapping {
   int extension_offset[2];
Ilia Mirkin's avatar
Ilia Mirkin committed
576
   enum pipe_format format[32];
577 578 579 580 581 582 583 584 585 586 587 588 589

   /* 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.
 */
590 591 592 593 594 595 596
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)
597
{
598
   GLboolean *extension_table = (GLboolean *) extensions;
599 600
   unsigned i;
   int j;
601 602
   int num_formats = ARRAY_SIZE(mapping->format);
   int num_ext = ARRAY_SIZE(mapping->extension_offset);
603 604 605 606 607 608 609

   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],
610
                                         target, 0, 0, bind_flags)) {
611 612 613 614 615 616 617 618 619 620 621
            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++)
622 623 624 625 626 627 628 629 630 631 632 633
         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,
634
                            const enum pipe_format *formats,
635 636 637 638 639 640 641 642
                            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],
643
                                         PIPE_TEXTURE_2D, i, i, bind)) {
644 645 646
            return i;
         }
      }
647
   }
648
   return 0;
649
}
650

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670
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;
}
671

672
/**
673 674 675 676 677
 * 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.
678
 */
679 680 681
void st_init_extensions(struct pipe_screen *screen,
                        struct gl_constants *consts,
                        struct gl_extensions *extensions,
682 683
                        struct st_config_options *options,
                        gl_api api)
684
{
685
   unsigned i;
686
   GLboolean *extension_table = (GLboolean *) extensions;
687 688

   static const struct st_extension_cap_mapping cap_mapping[] = {
689
      { o(ARB_base_instance),                PIPE_CAP_START_INSTANCE                   },
690
      { o(ARB_bindless_texture),             PIPE_CAP_BINDLESS_TEXTURE                 },
691
      { o(ARB_buffer_storage),               PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT   },
692
      { o(ARB_clear_texture),                PIPE_CAP_CLEAR_TEXTURE                    },
693
      { o(ARB_clip_control),                 PIPE_CAP_CLIP_HALFZ                       },
694
      { o(ARB_color_buffer_float),           PIPE_CAP_VERTEX_COLOR_UNCLAMPED           },
695
      { o(ARB_conditional_render_inverted),  PIPE_CAP_CONDITIONAL_RENDER_INVERTED      },
696
      { o(ARB_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
697
      { o(OES_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
Dave Airlie's avatar
Dave Airlie committed
698
      { o(ARB_cull_distance),                PIPE_CAP_CULL_DISTANCE                    },
699
      { o(ARB_depth_clamp),                  PIPE_CAP_DEPTH_CLIP_DISABLE               },
700
      { o(ARB_derivative_control),           PIPE_CAP_TGSI_FS_FINE_DERIVATIVE          },
701
      { o(ARB_draw_buffers_blend),           PIPE_CAP_INDEP_BLEND_FUNC                 },
702
      { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    },
703
      { o(ARB_draw_instanced),               PIPE_CAP_TGSI_INSTANCEID                  },
704
      { o(ARB_framebuffer_object),           PIPE_CAP_MIXED_FRAMEBUFFER_SIZES          },
705
      { o(ARB_gpu_shader_int64),             PIPE_CAP_INT64                            },
706
      { o(ARB_indirect_parameters),          PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS       },
707 708 709
      { 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                  },
710
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS        },
711
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
712
      { o(ARB_point_sprite),                 PIPE_CAP_POINT_SPRITE                     },
713
      { o(ARB_polygon_offset_clamp),         PIPE_CAP_POLYGON_OFFSET_CLAMP             },
714
      { o(ARB_post_depth_coverage),          PIPE_CAP_POST_DEPTH_COVERAGE              },
715
      { o(ARB_query_buffer_object),          PIPE_CAP_QUERY_BUFFER_OBJECT              },
716
      { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR   },
717
      { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
718
      { o(ARB_sample_locations),             PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS    },
719
      { o(ARB_seamless_cube_map),            PIPE_CAP_SEAMLESS_CUBE_MAP                },
720
      { o(ARB_shader_ballot),                PIPE_CAP_TGSI_BALLOT                      },
721
      { o(ARB_shader_clock),                 PIPE_CAP_TGSI_CLOCK                       },
722
      { o(ARB_shader_draw_parameters),       PIPE_CAP_DRAW_PARAMETERS                  },
723
      { o(ARB_shader_group_vote),            PIPE_CAP_TGSI_VOTE                        },
724
      { o(EXT_shader_image_load_formatted),  PIPE_CAP_IMAGE_LOAD_FORMATTED             },
725
      { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
726
      { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS                        },
727
      { o(ARB_shader_texture_lod),           PIPE_CAP_SM3                              },
728
      { o(ARB_sparse_buffer),                PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE          },
729
      { o(ARB_texture_buffer_object),        PIPE_CAP_TEXTURE_BUFFER_OBJECTS           },
730
      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
731
      { o(ARB_texture_gather),               PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS    },
732
      { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE     },
733
      { o(ARB_texture_multisample),          PIPE_CAP_TEXTURE_MULTISAMPLE              },
734
      { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
735 736
      { o(ARB_texture_query_lod),            PIPE_CAP_TEXTURE_QUERY_LOD                },
      { o(ARB_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
737
      { o(ARB_timer_query),                  PIPE_CAP_QUERY_TIMESTAMP                  },
738
      { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
739
      { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
740
      { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW           },
741
      { o(ARB_fragment_shader_interlock),    PIPE_CAP_FRAGMENT_SHADER_INTERLOCK        },
742 743

      { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
744
      { o(EXT_depth_bounds_test),            PIPE_CAP_DEPTH_BOUNDS_TEST                },
745
      { o(EXT_disjoint_timer_query),         PIPE_CAP_QUERY_TIMESTAMP                  },
746
      { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
747 748
      { o(EXT_memory_object),                PIPE_CAP_MEMOBJ                           },
      { o(EXT_memory_object_fd),             PIPE_CAP_MEMOBJ                           },
749
      { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT           },
750 751
      { o(EXT_semaphore),                    PIPE_CAP_FENCE_SIGNAL                     },
      { o(EXT_semaphore_fd),                 PIPE_CAP_FENCE_SIGNAL                     },
752 753 754 755 756
      { 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             },
      { o(EXT_texture_swizzle),              PIPE_CAP_TEXTURE_SWIZZLE                  },
      { o(EXT_transform_feedback),           PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS        },
757
      { o(EXT_window_rectangles),            PIPE_CAP_MAX_WINDOW_RECTANGLES            },
758

759
      { o(AMD_depth_clamp_separate),         PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE      },
760
      { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
761
      { o(AMD_pinned_memory),                PIPE_CAP_RESOURCE_FROM_USER_MEMORY        },
762
      { o(ATI_meminfo),                      PIPE_CAP_QUERY_MEMORY_INFO                },
763 764
      { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE    },
      { o(ATI_texture_mirror_once),          PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
765
      { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
766
      { o(MESA_tile_raster_order),           PIPE_CAP_TILE_RASTER_ORDER                },
767
      { o(NV_compute_shader_derivatives),    PIPE_CAP_COMPUTE_SHADER_DERIVATIVES       },
768
      { o(NV_conditional_render),            PIPE_CAP_CONDITIONAL_RENDER               },
769
      { o(NV_fill_rectangle),                PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE      },
770
      { o(NV_primitive_restart),             PIPE_CAP_PRIMITIVE_RESTART                },
771
      { o(NV_shader_atomic_float),           PIPE_CAP_TGSI_ATOMFADD                    },
772
      { o(NV_texture_barrier),               PIPE_CAP_TEXTURE_BARRIER                  },
773
      { o(NVX_gpu_memory_info),              PIPE_CAP_QUERY_MEMORY_INFO                },
774 775
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option. */
776

777
      { o(OES_standard_derivatives),         PIPE_CAP_SM3                              },
778 779
      { o(OES_texture_float_linear),         PIPE_CAP_TEXTURE_FLOAT_LINEAR             },
      { o(OES_texture_half_float_linear),    PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR        },
780
      { o(OES_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
781
   };
782

783 784
   /* Required: render target and sampler support */
   static const struct st_extension_format_mapping rendertarget_mapping[] = {
785 786 787 788 789 790
      { { o(OES_texture_float) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },

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

791
      { { o(ARB_texture_rgb10_a2ui) },
792 793 794
        { PIPE_FORMAT_R10G10B10A2_UINT,
          PIPE_FORMAT_B10G10R10A2_UINT },
         GL_TRUE }, /* at least one format must be supported */
795

796
      { { o(EXT_sRGB) },
797
        { PIPE_FORMAT_A8B8G8R8_SRGB,
798 799
          PIPE_FORMAT_B8G8R8A8_SRGB,
          PIPE_FORMAT_R8G8B8A8_SRGB },
800 801 802 803 804 805 806 807
         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 } },
808 809 810 811

      { { o(ARB_texture_rg) },
        { PIPE_FORMAT_R8_UNORM,
          PIPE_FORMAT_R8G8_UNORM } },
812 813 814 815 816 817 818 819

      { { 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 } },
820 821
   };

822 823 824 825 826 827
   /* Required: render target, sampler, and blending */
   static const struct st_extension_format_mapping rt_blendable[] = {
      { { o(EXT_float_blend) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },
   };

828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849
   /* 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),
850
          o(ANGLE_texture_compression_dxt) },
851 852 853 854 855
        { PIPE_FORMAT_DXT1_RGB,
          PIPE_FORMAT_DXT1_RGBA,
          PIPE_FORMAT_DXT3_RGBA,
          PIPE_FORMAT_DXT5_RGBA } },

856 857 858 859 860 861
      { { o(EXT_texture_compression_s3tc_srgb) },
        { PIPE_FORMAT_DXT1_SRGB,
          PIPE_FORMAT_DXT1_SRGBA,
          PIPE_FORMAT_DXT3_SRGBA,
          PIPE_FORMAT_DXT5_SRGBA } },

862 863 864 865 866 867
      { { o(ARB_texture_compression_bptc) },
        { PIPE_FORMAT_BPTC_RGBA_UNORM,
          PIPE_FORMAT_BPTC_SRGBA,
          PIPE_FORMAT_BPTC_RGB_FLOAT,
          PIPE_FORMAT_BPTC_RGB_UFLOAT } },

868 869
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
Ilia Mirkin's avatar
Ilia Mirkin committed
870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
        { 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 } },

899
      /* ASTC software fallback support. */
900 901
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
902 903 904
        { PIPE_FORMAT_R8G8B8A8_UNORM,
          PIPE_FORMAT_R8G8B8A8_SRGB } },

905 906 907 908 909 910 911 912 913
      { { 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,
914 915 916
	  PIPE_FORMAT_B8G8R8A8_SRGB,
	  PIPE_FORMAT_A8R8G8B8_SRGB,
	  PIPE_FORMAT_R8G8B8A8_SRGB},
917 918
        GL_TRUE }, /* at least one format must be supported */

919 920 921 922
      { { o(EXT_texture_sRGB_R8) },
        { PIPE_FORMAT_R8_SRGB },
        GL_TRUE },

923 924 925 926 927
      { { 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 */

928 929 930 931 932 933 934 935 936
      { { 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) },
937 938 939
        { PIPE_FORMAT_ETC1_RGB8,
          PIPE_FORMAT_R8G8B8A8_UNORM },
        GL_TRUE }, /* at least one format must be supported */
940

941 942
      { { o(ARB_stencil_texturing),
          o(ARB_texture_stencil8) },
943 944 945
        { PIPE_FORMAT_X24S8_UINT,
          PIPE_FORMAT_S8X24_UINT },
        GL_TRUE }, /* at least one format must be supported */
Jonathan Marek's avatar
Jonathan Marek committed
946 947 948 949 950

      { { o(AMD_compressed_ATC_texture) },
        { PIPE_FORMAT_ATC_RGB,
          PIPE_FORMAT_ATC_RGBA_EXPLICIT,
          PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
951 952 953 954
   };

   /* Required: vertex fetch support. */
   static const struct st_extension_format_mapping vertex_mapping[] = {
955 956
      { { o(EXT_vertex_array_bgra) },
        { PIPE_FORMAT_B8G8R8A8_UNORM } },
957 958 959 960 961 962 963 964 965
      { { 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 } },
966 967
      { { o(ARB_vertex_type_10f_11f_11f_rev) },
        { PIPE_FORMAT_R11G11B10_FLOAT } },
968 969
   };

970 971 972 973 974 975 976 977
   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,
        } },
   };

978 979 980
   /*
    * Extensions that are supported by all Gallium drivers:
    */
981
   extensions->ARB_ES2_compatibility = GL_TRUE;
982
   extensions->ARB_depth_texture = GL_TRUE;
983 984 985 986 987
   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;
988
   extensions->ARB_fragment_program_shadow = GL_TRUE;
989 990 991
   extensions->ARB_fragment_shader = GL_TRUE;
   extensions->ARB_half_float_vertex = GL_TRUE;
   extensions->ARB_internalformat_query = GL_TRUE;
992
   extensions->ARB_internalformat_query2 = GL_TRUE;
993
   extensions->ARB_map_buffer_range = GL_TRUE;
994
   extensions->ARB_shadow = GL_TRUE;
995 996
   extensions->ARB_sync = GL_TRUE;
   extensions->ARB_texture_border_clamp = GL_TRUE;
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
   extensions->ARB_texture_cube_map = GL_TRUE;
   extensions->ARB_texture_env_combine = GL_TRUE;
   extensions->ARB_texture_env_crossbar = GL_TRUE;
   extensions->ARB_texture_env_dot3 = GL_TRUE;
   extensions->ARB_vertex_program = GL_TRUE;
   extensions->ARB_vertex_shader = GL_TRUE;

   extensions->EXT_blend_color = GL_TRUE;
   extensions->EXT_blend_func_separate = GL_TRUE;
   extensions->EXT_blend_minmax = GL_TRUE;
   extensions->EXT_gpu_program_parameters = GL_TRUE;
   extensions->EXT_pixel_buffer_object = GL_TRUE;
   extensions->EXT_point_parameters = GL_TRUE;
   extensions->EXT_provoking_vertex = GL_TRUE;