st_extensions.c 71.7 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/spirv_extensions.h"
35
#include "main/version.h"
36 37 38

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
39
#include "pipe/p_screen.h"
40
#include "tgsi/tgsi_from_mesa.h"
41
#include "util/u_math.h"
42 43

#include "st_context.h"
Rob Clark's avatar
Rob Clark committed
44
#include "st_debug.h"
45
#include "st_extensions.h"
46
#include "st_format.h"
47

48 49 50 51 52 53

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

54
static unsigned _min(unsigned a, unsigned b)
55 56 57 58
{
   return (a < b) ? a : b;
}

59
static float _maxf(float a, float b)
60 61 62 63
{
   return (a > b) ? a : b;
}

64
static int _clamp(int a, int min, int max)
65
{
66 67 68 69 70 71
   if (a < min)
      return min;
   else if (a > max)
      return max;
   else
      return a;
72 73 74
}


75 76 77 78
/**
 * Query driver to get implementation limits.
 * Note that we have to limit/clamp against Mesa's internal limits too.
 */
79
void st_init_limits(struct pipe_screen *screen,
80
                    struct gl_constants *c, struct gl_extensions *extensions)
81
{
82
   int supported_irs;
83
   unsigned sh;
84
   bool can_ubo = true;
85
   int temp;
86

87 88
   c->MaxTextureSize = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
   c->MaxTextureSize = MIN2(c->MaxTextureSize, 1 << (MAX_TEXTURE_LEVELS - 1));
89

90
   c->Max3DTextureLevels
91
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
92
            MAX_3D_TEXTURE_LEVELS);
93

94
   c->MaxCubeTextureLevels
95
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
96
            MAX_CUBE_TEXTURE_LEVELS);
97

98
   c->MaxTextureRectSize = _min(c->MaxTextureSize, MAX_TEXTURE_RECT_SIZE);
99

100 101 102
   c->MaxArrayTextureLayers
      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);

103 104 105 106 107 108 109 110
   /* 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;

111
   c->SubPixelBits =
112
      screen->get_param(screen, PIPE_CAP_RASTERIZER_SUBPIXEL_BITS);
113 114 115
   c->ViewportSubpixelBits =
      screen->get_param(screen, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS);

116 117 118
   c->MaxDrawBuffers = c->MaxColorAttachments =
      _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
             1, MAX_DRAW_BUFFERS);
119

120 121 122 123 124 125 126 127 128 129 130 131 132 133
   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));
134

135
   c->MinPointSize = 1.0f;
136
   c->MinPointSizeAA = 1.0f;
137

138 139 140
   c->MaxTextureMaxAnisotropy =
      _maxf(2.0f,
            screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
141

142 143
   c->MaxTextureLodBias =
      screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
144

145 146 147
   c->QuadsFollowProvokingVertexConvention =
      screen->get_param(screen,
                        PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
148

149 150
   c->MaxUniformBlockSize =
      screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
151
                               PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
152 153 154 155 156
   /* 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);

157
   if (c->MaxUniformBlockSize < 16384) {
158
      can_ubo = false;
159 160
   }

161 162
   for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options;
163
      struct gl_program_constants *pc;
164 165
      const nir_shader_compiler_options *nir_options = NULL;

166 167 168 169
      bool prefer_nir = PIPE_SHADER_IR_NIR ==
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_PREFERRED_IR);

      if (screen->get_compiler_options && prefer_nir) {
170 171 172
         nir_options = (const nir_shader_compiler_options *)
            screen->get_compiler_options(screen, PIPE_SHADER_IR_NIR, sh);
      }
173

174 175 176 177
      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;
178

179
      if (sh == PIPE_SHADER_COMPUTE) {
180 181 182 183
         if (!screen->get_param(screen, PIPE_CAP_COMPUTE))
            continue;
         supported_irs =
            screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUPPORTED_IRS);
184 185
         if (!(supported_irs & ((1 << PIPE_SHADER_IR_TGSI) |
                                (1 << PIPE_SHADER_IR_NIR))))
186
            continue;
187 188
      }

189 190 191 192 193
      pc->MaxTextureImageUnits =
         _min(screen->get_shader_param(screen, sh,
                                       PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
              MAX_TEXTURE_IMAGE_UNITS);

194 195
      pc->MaxInstructions =
      pc->MaxNativeInstructions =
196
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
197 198 199 200 201 202 203 204 205 206 207 208 209 210
      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 =
211
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
212 213
      pc->MaxTemps =
      pc->MaxNativeTemps =
214
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
215 216
      pc->MaxAddressRegs =
      pc->MaxNativeAddressRegs = sh == PIPE_SHADER_VERTEX ? 1 : 0;
217 218

      pc->MaxUniformComponents =
219
         screen->get_shader_param(screen, sh,
220 221 222 223
                                  PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / 4;
      pc->MaxUniformComponents = MIN2(pc->MaxUniformComponents,
                                      MAX_UNIFORMS * 4);

224 225 226 227 228
      /* 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.
       */
229
      pc->MaxParameters =
230
      pc->MaxNativeParameters = MIN2(pc->MaxUniformComponents / 4, 2048);
231 232 233 234
      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;
235 236 237


      pc->MaxUniformBlocks =
238 239
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
240 241
      if (pc->MaxUniformBlocks)
         pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
242
      pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
243

244 245 246
      pc->MaxCombinedUniformComponents =
         pc->MaxUniformComponents +
         (uint64_t)c->MaxUniformBlockSize / 4 * pc->MaxUniformBlocks;
247

248 249 250 251
      pc->MaxShaderStorageBlocks =
         screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);

252 253 254 255 256 257 258 259
      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);
260
      } else if (pc->MaxShaderStorageBlocks) {
261
         pc->MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
262 263 264 265 266 267
         /*
          * 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;
268
      }
269 270 271
      pc->MaxImageUniforms = screen->get_shader_param(
            screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);

272 273 274
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
275 276
      pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
      pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
277

278 279 280 281 282 283 284
      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;
      }

285
      /* TODO: make these more fine-grained if anyone needs it */
286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310
      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);
311

312 313
      if (pc->MaxNativeInstructions &&
          (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
314
         can_ubo = false;
315 316
      }

Brian Paul's avatar
Brian Paul committed
317
      if (options->EmitNoLoops)
318 319 320 321
         options->MaxUnrollIterations =
            MIN2(screen->get_shader_param(screen, sh,
                                          PIPE_SHADER_CAP_MAX_INSTRUCTIONS),
                 65536);
322
      else
323 324 325
         options->MaxUnrollIterations =
            screen->get_shader_param(screen, sh,
                                  PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
326

327 328 329
      if (!screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS))
         options->LowerCombinedClipCullDistance = true;

330 331 332 333
      /* 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;
334 335 336 337 338

      if (sh == MESA_SHADER_VERTEX) {
         if (screen->get_param(screen, PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED))
            options->LowerBuiltinVariablesXfb |= VARYING_BIT_POS;
      }
339
   }
340

341 342 343 344 345 346 347
   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;

348 349
   c->GLSLOptimizeConservatively =
      screen->get_param(screen, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY);
350 351
   c->GLSLLowerConstArrays =
      screen->get_param(screen, PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF);
352 353
   c->GLSLTessLevelsAsInputs =
      screen->get_param(screen, PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS);
354 355
   c->LowerTessLevel =
      !screen->get_param(screen, PIPE_CAP_NIR_COMPACT_ARRAYS);
356 357
   c->LowerCsDerivedVariables =
      !screen->get_param(screen, PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED);
358 359
   c->PrimitiveRestartForPatches =
      screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES);
360

361 362
   c->MaxCombinedTextureImageUnits =
         _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
363 364
              c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
              c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
365
              c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
366 367
              c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
              c->Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
368 369
              MAX_COMBINED_TEXTURE_IMAGE_UNITS);

370 371
   /* This depends on program constants. */
   c->MaxTextureCoordUnits
372 373
      = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
             MAX_TEXTURE_COORD_UNITS);
374

375 376 377
   c->MaxTextureUnits =
      _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
           c->MaxTextureCoordUnits);
378

379 380
   c->Program[MESA_SHADER_VERTEX].MaxAttribs =
      MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
381

382
   c->MaxVarying = screen->get_param(screen, PIPE_CAP_MAX_VARYINGS);
383
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
384 385 386 387
   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);
388 389
   c->MaxGeometryShaderInvocations =
      screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
390
   c->MaxTessPatchComponents =
391
      MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
392
           MAX_VARYING) * 4;
393

394 395 396 397
   c->MinProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
   c->MaxProgramTexelOffset =
      screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
398

399 400 401 402 403 404
   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);
405

406
   c->MaxTransformFeedbackBuffers =
407
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
408 409
   c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers,
                                         MAX_FEEDBACK_BUFFERS);
410 411 412
   c->MaxTransformFeedbackSeparateComponents =
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
   c->MaxTransformFeedbackInterleavedComponents =
413 414
      screen->get_param(screen,
                        PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
415 416 417 418 419
   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);
420

421 422 423
   c->MaxVertexAttribStride
      = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);

424 425 426 427 428 429
   /* 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);

430
   c->StripTextureBorder = GL_TRUE;
431 432 433 434

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

435 436 437
   c->UniformBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);

438
   if (can_ubo) {
439
      extensions->ARB_uniform_buffer_object = GL_TRUE;
440
      c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
441
         c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
442 443
         c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
         c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
444
         c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
445 446
         c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks +
         c->Program[MESA_SHADER_COMPUTE].MaxUniformBlocks;
447
      assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
448
   }
449 450 451

   c->GLSLFragCoordIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL);
452 453
   c->GLSLPointCoordIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL);
454 455
   c->GLSLFrontFacingIsSysVal =
      screen->get_param(screen, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL);
456

457 458
   /* GL_ARB_get_program_binary */
   if (screen->get_disk_shader_cache && screen->get_disk_shader_cache(screen))
459 460
      c->NumProgramBinaryFormats = 1;

461
   c->MaxAtomicBufferBindings =
462 463 464
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
   c->MaxAtomicBufferSize =
      c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
465

466 467 468 469 470
   c->MaxCombinedAtomicBuffers =
      MIN2(screen->get_param(screen,
                             PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS),
           MAX_COMBINED_ATOMIC_BUFFERS);
   if (!c->MaxCombinedAtomicBuffers) {
471
      c->MaxCombinedAtomicBuffers =
472 473 474 475 476
         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;
477 478
      assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
   }
479

480 481 482 483 484
   c->MaxCombinedAtomicCounters =
      screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
   if (!c->MaxCombinedAtomicCounters)
      c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;

485
   if (c->MaxCombinedAtomicBuffers > 0) {
486
      extensions->ARB_shader_atomic_counters = GL_TRUE;
487 488
      extensions->ARB_shader_atomic_counter_ops = GL_TRUE;
   }
489 490 491 492 493

   c->MaxCombinedShaderOutputResources = c->MaxDrawBuffers;
   c->ShaderStorageBufferOffsetAlignment =
      screen->get_param(screen, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT);
   if (c->ShaderStorageBufferOffsetAlignment) {
494 495 496 497
      c->MaxCombinedShaderStorageBlocks =
         MIN2(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS),
              MAX_COMBINED_SHADER_STORAGE_BUFFERS);
      if (!c->MaxCombinedShaderStorageBlocks) {
498 499 500 501 502 503 504 505 506 507
         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;

508 509
      c->MaxCombinedShaderOutputResources +=
         c->MaxCombinedShaderStorageBlocks;
510 511
      c->MaxShaderStorageBlockSize =
         screen->get_param(screen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE);
512
      extensions->ARB_shader_storage_buffer_object = GL_TRUE;
513
   }
514 515 516 517 518 519

   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 +
520 521
         c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms +
         c->Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
522
   c->MaxCombinedShaderOutputResources += c->MaxCombinedImageUniforms;
523 524 525 526 527
   c->MaxImageUnits = MAX_IMAGE_UNITS;
   if (c->MaxCombinedImageUniforms) {
      extensions->ARB_shader_image_load_store = GL_TRUE;
      extensions->ARB_shader_image_size = GL_TRUE;
   }
528 529 530 531 532 533 534 535 536 537 538 539

   /* 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);
540 541 542

   c->MaxWindowRectangles =
      screen->get_param(screen, PIPE_CAP_MAX_WINDOW_RECTANGLES);
543 544 545

   c->SparseBufferPageSize =
      screen->get_param(screen, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE);
546 547 548

   c->AllowMappedBuffersDuringExecution =
      screen->get_param(screen, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION);
549 550 551

   c->UseSTD430AsDefaultPacking =
      screen->get_param(screen, PIPE_CAP_LOAD_CONSTBUF);
552

553 554 555 556 557 558 559 560 561 562
   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);

563 564 565 566
   /* 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;
567 568 569

   c->VertexBufferOffsetIsInt32 =
      screen->get_param(screen, PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET);
570 571 572
}


573 574 575 576 577 578 579 580 581 582 583 584
/**
 * 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;
};

585 586
struct st_extension_format_mapping {
   int extension_offset[2];
Ilia Mirkin's avatar
Ilia Mirkin committed
587
   enum pipe_format format[32];
588 589 590 591 592 593 594 595 596 597 598 599 600

   /* 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.
 */
601 602 603 604 605 606 607
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)
608
{
609
   GLboolean *extension_table = (GLboolean *) extensions;
610 611
   unsigned i;
   int j;
612 613
   int num_formats = ARRAY_SIZE(mapping->format);
   int num_ext = ARRAY_SIZE(mapping->extension_offset);
614 615 616 617 618 619 620

   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],
621
                                         target, 0, 0, bind_flags)) {
622 623 624 625 626 627 628 629 630 631 632
            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++)
633 634 635 636 637 638 639 640 641 642 643 644
         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,
645
                            const enum pipe_format *formats,
646 647 648 649 650 651 652 653
                            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],
654
                                         PIPE_TEXTURE_2D, i, i, bind)) {
655 656 657
            return i;
         }
      }
658
   }
659
   return 0;
660
}
661

662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681
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;
}
682

683
/**
684 685 686 687 688
 * 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.
689
 */
690 691 692
void st_init_extensions(struct pipe_screen *screen,
                        struct gl_constants *consts,
                        struct gl_extensions *extensions,
693 694
                        struct st_config_options *options,
                        gl_api api)
695
{
696
   unsigned i;
697
   GLboolean *extension_table = (GLboolean *) extensions;
698 699

   static const struct st_extension_cap_mapping cap_mapping[] = {
700
      { o(ARB_base_instance),                PIPE_CAP_START_INSTANCE                   },
701
      { o(ARB_bindless_texture),             PIPE_CAP_BINDLESS_TEXTURE                 },
702
      { o(ARB_buffer_storage),               PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT   },
703
      { o(ARB_clear_texture),                PIPE_CAP_CLEAR_TEXTURE                    },
704
      { o(ARB_clip_control),                 PIPE_CAP_CLIP_HALFZ                       },
705
      { o(ARB_color_buffer_float),           PIPE_CAP_VERTEX_COLOR_UNCLAMPED           },
706
      { o(ARB_conditional_render_inverted),  PIPE_CAP_CONDITIONAL_RENDER_INVERTED      },
707
      { o(ARB_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
708
      { o(OES_copy_image),                   PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS },
Dave Airlie's avatar
Dave Airlie committed
709
      { o(ARB_cull_distance),                PIPE_CAP_CULL_DISTANCE                    },
710
      { o(ARB_depth_clamp),                  PIPE_CAP_DEPTH_CLIP_DISABLE               },
711
      { o(ARB_derivative_control),           PIPE_CAP_TGSI_FS_FINE_DERIVATIVE          },
712
      { o(ARB_draw_buffers_blend),           PIPE_CAP_INDEP_BLEND_FUNC                 },
713
      { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    },
714
      { o(ARB_draw_instanced),               PIPE_CAP_TGSI_INSTANCEID                  },
715
      { o(ARB_fragment_program_shadow),      PIPE_CAP_TEXTURE_SHADOW_MAP               },
716
      { o(ARB_framebuffer_object),           PIPE_CAP_MIXED_FRAMEBUFFER_SIZES          },
717
      { o(ARB_gpu_shader_int64),             PIPE_CAP_INT64                            },
718
      { o(ARB_gl_spirv),                     PIPE_CAP_GL_SPIRV                         },
719
      { o(ARB_indirect_parameters),          PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS       },
720 721 722
      { 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                  },
723
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS        },
724
      { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE },
725
      { o(ARB_point_sprite),                 PIPE_CAP_POINT_SPRITE                     },
726
      { o(ARB_polygon_offset_clamp),         PIPE_CAP_POLYGON_OFFSET_CLAMP             },
727
      { o(ARB_post_depth_coverage),          PIPE_CAP_POST_DEPTH_COVERAGE              },
728
      { o(ARB_query_buffer_object),          PIPE_CAP_QUERY_BUFFER_OBJECT              },
729
      { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR   },
730
      { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
731
      { o(ARB_sample_locations),             PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS    },
732
      { o(ARB_seamless_cube_map),            PIPE_CAP_SEAMLESS_CUBE_MAP                },
733
      { o(ARB_shader_ballot),                PIPE_CAP_TGSI_BALLOT                      },
734
      { o(ARB_shader_clock),                 PIPE_CAP_TGSI_CLOCK                       },
735
      { o(ARB_shader_draw_parameters),       PIPE_CAP_DRAW_PARAMETERS                  },
736
      { o(ARB_shader_group_vote),            PIPE_CAP_TGSI_VOTE                        },
737
      { o(EXT_shader_image_load_formatted),  PIPE_CAP_IMAGE_LOAD_FORMATTED             },
738
      { o(EXT_shader_image_load_store),      PIPE_CAP_TGSI_ATOMINC_WRAP                },
739
      { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
740
      { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS                        },
741
      { o(ARB_shader_texture_lod),           PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD      },
742
      { o(ARB_shadow),                       PIPE_CAP_TEXTURE_SHADOW_MAP               },
743
      { o(ARB_sparse_buffer),                PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE          },
744
      { o(ARB_spirv_extensions),             PIPE_CAP_GL_SPIRV                         },
745
      { o(ARB_texture_buffer_object),        PIPE_CAP_TEXTURE_BUFFER_OBJECTS           },
746
      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
747
      { o(ARB_texture_gather),               PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS    },
748
      { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE     },
749
      { o(ARB_texture_multisample),          PIPE_CAP_TEXTURE_MULTISAMPLE              },
750
      { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
751 752
      { o(ARB_texture_query_lod),            PIPE_CAP_TEXTURE_QUERY_LOD                },
      { o(ARB_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
753
      { o(ARB_timer_query),                  PIPE_CAP_QUERY_TIMESTAMP                  },
754
      { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
755
      { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
756
      { o(ARB_transform_feedback_overflow_query), PIPE_CAP_QUERY_SO_OVERFLOW           },
757
      { o(ARB_fragment_shader_interlock),    PIPE_CAP_FRAGMENT_SHADER_INTERLOCK        },
758 759

      { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
760
      { o(EXT_demote_to_helper_invocation),  PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION      },
761
      { o(EXT_depth_bounds_test),            PIPE_CAP_DEPTH_BOUNDS_TEST                },
762
      { o(EXT_disjoint_timer_query),         PIPE_CAP_QUERY_TIMESTAMP                  },
763
      { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
764 765
      { o(EXT_memory_object),                PIPE_CAP_MEMOBJ                           },
      { o(EXT_memory_object_fd),             PIPE_CAP_MEMOBJ                           },
766
      { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT           },
767 768
      { o(EXT_semaphore),                    PIPE_CAP_FENCE_SIGNAL                     },
      { o(EXT_semaphore_fd),                 PIPE_CAP_FENCE_SIGNAL                     },
769
      { o(EXT_shader_samples_identical),     PIPE_CAP_SHADER_SAMPLES_IDENTICAL         },
770 771 772
      { 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             },
773
      { o(EXT_texture_shadow_lod),           PIPE_CAP_TEXTURE_SHADOW_LOD               },
774 775
      { o(EXT_texture_swizzle),              PIPE_CAP_TEXTURE_SWIZZLE                  },
      { o(EXT_transform_feedback),           PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS        },
776
      { o(EXT_window_rectangles),            PIPE_CAP_MAX_WINDOW_RECTANGLES            },
777

778
      { o(AMD_depth_clamp_separate),         PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE      },
779
      { o(AMD_framebuffer_multisample_advanced), PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS },
780
      { o(AMD_pinned_memory),                PIPE_CAP_RESOURCE_FROM_USER_MEMORY        },
781
      { o(ATI_meminfo),                      PIPE_CAP_QUERY_MEMORY_INFO                },
782 783
      { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE    },
      { o(ATI_texture_mirror_once),          PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
784
      { o(INTEL_conservative_rasterization), PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE },
785
      { o(INTEL_shader_atomic_float_minmax), PIPE_CAP_ATOMIC_FLOAT_MINMAX              },
786
      { o(MESA_tile_raster_order),           PIPE_CAP_TILE_RASTER_ORDER                },
787
      { o(NV_compute_shader_derivatives),    PIPE_CAP_COMPUTE_SHADER_DERIVATIVES       },
788
      { o(NV_conditional_render),            PIPE_CAP_CONDITIONAL_RENDER               },
789
      { o(NV_fill_rectangle),                PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE      },
790
      { o(NV_primitive_restart),             PIPE_CAP_PRIMITIVE_RESTART                },
791
      { o(NV_shader_atomic_float),           PIPE_CAP_TGSI_ATOMFADD                    },
792
      { o(NV_texture_barrier),               PIPE_CAP_TEXTURE_BARRIER                  },
793
      { o(NVX_gpu_memory_info),              PIPE_CAP_QUERY_MEMORY_INFO                },
794 795
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option. */
796

797
      { o(OES_standard_derivatives),         PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES      },
798 799
      { o(OES_texture_float_linear),         PIPE_CAP_TEXTURE_FLOAT_LINEAR             },
      { o(OES_texture_half_float_linear),    PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR        },
800
      { o(OES_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
801
      { o(INTEL_blackhole_render),           PIPE_CAP_FRONTEND_NOOP,                   },
802
   };
803

804 805
   /* Required: render target and sampler support */
   static const struct st_extension_format_mapping rendertarget_mapping[] = {
806 807 808 809 810 811
      { { o(OES_texture_float) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },

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

812
      { { o(ARB_texture_rgb10_a2ui) },
813 814 815
        { PIPE_FORMAT_R10G10B10A2_UINT,
          PIPE_FORMAT_B10G10R10A2_UINT },
         GL_TRUE }, /* at least one format must be supported */
816

817
      { { o(EXT_sRGB) },
818
        { PIPE_FORMAT_A8B8G8R8_SRGB,
819 820
          PIPE_FORMAT_B8G8R8A8_SRGB,
          PIPE_FORMAT_R8G8B8A8_SRGB },
821 822 823 824 825 826 827 828
         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 } },
829 830 831 832

      { { o(ARB_texture_rg) },
        { PIPE_FORMAT_R8_UNORM,
          PIPE_FORMAT_R8G8_UNORM } },
833

834 835 836 837 838
      { { o(EXT_texture_norm16) },
        { PIPE_FORMAT_R16_UNORM,
          PIPE_FORMAT_R16G16_UNORM,
          PIPE_FORMAT_R16G16B16A16_UNORM } },

839 840 841 842 843 844 845
      { { 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 } },
846 847
   };

848 849 850 851 852 853
   /* Required: render target, sampler, and blending */
   static const struct st_extension_format_mapping rt_blendable[] = {
      { { o(EXT_float_blend) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT } },
   };

854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
   /* 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),
876
          o(ANGLE_texture_compression_dxt) },
877 878 879 880 881
        { PIPE_FORMAT_DXT1_RGB,
          PIPE_FORMAT_DXT1_RGBA,
          PIPE_FORMAT_DXT3_RGBA,
          PIPE_FORMAT_DXT5_RGBA } },

882 883 884 885 886 887
      { { o(EXT_texture_compression_s3tc_srgb) },
        { PIPE_FORMAT_DXT1_SRGB,
          PIPE_FORMAT_DXT1_SRGBA,
          PIPE_FORMAT_DXT3_SRGBA,
          PIPE_FORMAT_DXT5_SRGBA } },

888 889 890 891 892 893
      { { o(ARB_texture_compression_bptc) },
        { PIPE_FORMAT_BPTC_RGBA_UNORM,
          PIPE_FORMAT_BPTC_SRGBA,
          PIPE_FORMAT_BPTC_RGB_FLOAT,
          PIPE_FORMAT_BPTC_RGB_UFLOAT } },

894 895 896 897
      { { o(TDFX_texture_compression_FXT1) },
        { PIPE_FORMAT_FXT1_RGB,
          PIPE_FORMAT_FXT1_RGBA } },

898 899
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
Ilia Mirkin's avatar
Ilia Mirkin committed
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
        { 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 } },

929
      /* ASTC software fallback support. */
930 931
      { { o(KHR_texture_compression_astc_ldr),
          o(KHR_texture_compression_astc_sliced_3d) },
932 933 934
        { PIPE_FORMAT_R8G8B8A8_UNORM,
          PIPE_FORMAT_R8G8B8A8_SRGB } },

935 936 937 938 939 940 941 942 943
      { { 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,
944 945 946
	  PIPE_FORMAT_B8G8R8A8_SRGB,
	  PIPE_FORMAT_A8R8G8B8_SRGB,
	  PIPE_FORMAT_R8G8B8A8_SRGB},
947 948
        GL_TRUE }, /* at least one format must be supported */

949 950 951 952
      { { o(EXT_texture_sRGB_R8) },
        { PIPE_FORMAT_R8_SRGB },
        GL_TRUE },

953 954 955 956 957
      { { 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 */

958 959 960 961 962 963 964 965 966
      { { 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) },
967 968 969
        { PIPE_FORMAT_ETC1_RGB8,
          PIPE_FORMAT_R8G8B8A8_UNORM },
        GL_TRUE }, /* at least one format must be supported */
970

971 972
      { { o(ARB_stencil_texturing),
          o(ARB_texture_stencil8) },
973 974 975
        { PIPE_FORMAT_X24S8_UINT,
          PIPE_FORMAT_S8X24_UINT },
        GL_TRUE }, /* at least one format must be supported */
Jonathan Marek's avatar
Jonathan Marek committed
976 977 978 979 980

      { { o(AMD_compressed_ATC_texture) },
        { PIPE_FORMAT_ATC_RGB,
          PIPE_FORMAT_ATC_RGBA_EXPLICIT,
          PIPE_FORMAT_ATC_RGBA_INTERPOLATED } },
981 982 983 984
   };

   /* Required: vertex fetch support. */
   static const struct st_extension_format_mapping vertex_mapping[] = {