st_extensions.c 35.3 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 29 30 31
 * 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.
 * 
 **************************************************************************/

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

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
36
#include "pipe/p_screen.h"
37 38 39

#include "st_context.h"
#include "st_extensions.h"
40
#include "st_format.h"
41

42 43 44 45 46 47

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

48
static unsigned _min(unsigned a, unsigned b)
49 50 51 52
{
   return (a < b) ? a : b;
}

53
static float _maxf(float a, float b)
54 55 56 57
{
   return (a > b) ? a : b;
}

58
static int _clamp(int a, int min, int max)
59
{
60 61 62 63 64 65
   if (a < min)
      return min;
   else if (a > max)
      return max;
   else
      return a;
66 67 68
}


69 70 71 72
/**
 * Query driver to get implementation limits.
 * Note that we have to limit/clamp against Mesa's internal limits too.
 */
73 74
void st_init_limits(struct pipe_screen *screen,
                    struct gl_constants *c, struct gl_extensions *extensions)
75
{
76
   unsigned sh;
77
   boolean can_ubo = TRUE;
78 79

   c->MaxTextureLevels
80
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
81
            MAX_TEXTURE_LEVELS);
82

83
   c->Max3DTextureLevels
84
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
85
            MAX_3D_TEXTURE_LEVELS);
86

87
   c->MaxCubeTextureLevels
88
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
89
            MAX_CUBE_TEXTURE_LEVELS);
90

91
   c->MaxTextureRectSize
92
      = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
93

94 95 96
   c->MaxArrayTextureLayers
      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);

97 98 99 100 101 102 103 104
   /* 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;

105 106 107
   c->MaxDrawBuffers = c->MaxColorAttachments =
      _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
             1, MAX_DRAW_BUFFERS);
108

109 110 111 112
   c->MaxDualSourceDrawBuffers
      = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS),
              0, MAX_DRAW_BUFFERS);

113
   c->MaxLineWidth
114 115
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_LINE_WIDTH));
116
   c->MaxLineWidthAA
117 118
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_LINE_WIDTH_AA));
119 120

   c->MaxPointSize
121 122
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_POINT_WIDTH));
123
   c->MaxPointSizeAA
124 125
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_POINT_WIDTH_AA));
126

127 128 129 130 131
   /* 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;
132 133

   c->MaxTextureMaxAnisotropy
134 135
      = _maxf(2.0f, screen->get_paramf(screen,
                                 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
136 137

   c->MaxTextureLodBias
138
      = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
139

140 141
   c->QuadsFollowProvokingVertexConvention = screen->get_param(
      screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
142

143 144
   c->MaxUniformBlockSize =
      screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
145
                               PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE);
146 147 148 149
   if (c->MaxUniformBlockSize < 16384) {
      can_ubo = FALSE;
   }

150 151
   for (sh = 0; sh < PIPE_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options;
152
      struct gl_program_constants *pc;
153 154

      switch (sh) {
155
      case PIPE_SHADER_FRAGMENT:
156
         pc = &c->Program[MESA_SHADER_FRAGMENT];
157
         options = &c->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
158 159
         break;
      case PIPE_SHADER_VERTEX:
160
         pc = &c->Program[MESA_SHADER_VERTEX];
161
         options = &c->ShaderCompilerOptions[MESA_SHADER_VERTEX];
162 163
         break;
      case PIPE_SHADER_GEOMETRY:
164
         pc = &c->Program[MESA_SHADER_GEOMETRY];
165
         options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
166
         break;
167
      default:
168
         /* compute shader, etc. */
169
         continue;
170 171
      }

172 173 174 175 176
      pc->MaxTextureImageUnits =
         _min(screen->get_shader_param(screen, sh,
                                       PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
              MAX_TEXTURE_IMAGE_UNITS);

177 178 179 180 181 182 183 184 185 186 187 188 189
      pc->MaxInstructions    = pc->MaxNativeInstructions    =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
      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         =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
      pc->MaxTemps           = pc->MaxNativeTemps           =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
      pc->MaxAddressRegs     = pc->MaxNativeAddressRegs     =
190
         sh == PIPE_SHADER_VERTEX ? 1 : 0;
191
      pc->MaxParameters      = pc->MaxNativeParameters      =
192 193
         screen->get_shader_param(screen, sh,
                   PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) / sizeof(float[4]);
194 195 196 197 198 199 200

      pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);

      pc->MaxUniformBlocks =
         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONST_BUFFERS);
      if (pc->MaxUniformBlocks)
         pc->MaxUniformBlocks -= 1; /* The first one is for ordinary uniforms. */
201
      pc->MaxUniformBlocks = _min(pc->MaxUniformBlocks, MAX_UNIFORM_BUFFERS);
202 203 204 205

      pc->MaxCombinedUniformComponents = (pc->MaxUniformComponents +
                                          c->MaxUniformBlockSize / 4 *
                                          pc->MaxUniformBlocks);
206

207 208 209
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
210 211
      pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
      pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
212

213 214
      options->EmitNoNoise = TRUE;

215
      /* TODO: make these more fine-grained if anyone needs it */
216
      options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
217 218 219
      options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
      options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
      options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
220

221
      options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
222

223
      options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
224
                                        PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
225
      options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
226
                                        PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
227
      options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
228
                                        PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
229
      options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
230 231
                                        PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);

232 233
      if (pc->MaxNativeInstructions &&
          (options->EmitNoIndirectUniform || pc->MaxUniformBlocks < 12)) {
234 235 236
         can_ubo = FALSE;
      }

Brian Paul's avatar
Brian Paul committed
237
      if (options->EmitNoLoops)
238
         options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
239 240
      else
         options->MaxUnrollIterations = 255; /* SM3 limit */
241
      options->LowerClipDistance = true;
242
   }
243

244 245 246 247 248 249
   c->MaxCombinedTextureImageUnits =
         _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
              c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
              c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
              MAX_COMBINED_TEXTURE_IMAGE_UNITS);

250 251
   /* This depends on program constants. */
   c->MaxTextureCoordUnits
252
      = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
253

254
   c->MaxTextureUnits = _min(c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits, c->MaxTextureCoordUnits);
255

256
   c->Program[MESA_SHADER_VERTEX].MaxAttribs = MIN2(c->Program[MESA_SHADER_VERTEX].MaxAttribs, 16);
257

258 259 260 261
   /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
    * of inputs. It's always 2 colors + N generic inputs. */
   c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                            PIPE_SHADER_CAP_MAX_INPUTS);
262
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
263 264 265 266
   c->Program[MESA_SHADER_FRAGMENT].MaxInputComponents = c->MaxVarying * 4;
   c->Program[MESA_SHADER_VERTEX].MaxOutputComponents = c->MaxVarying * 4;
   c->Program[MESA_SHADER_GEOMETRY].MaxInputComponents = c->MaxVarying * 4;
   c->Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = c->MaxVarying * 4;
267 268
   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);
269

270 271 272
   c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
   c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);

273
   c->MaxProgramTextureGatherComponents = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS);
274 275 276
   c->MinProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET);
   c->MaxProgramTextureGatherOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET);

277
   c->UniformBooleanTrue = ~0;
278

279
   c->MaxTransformFeedbackBuffers =
280
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
281
   c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS);
282 283 284 285
   c->MaxTransformFeedbackSeparateComponents =
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS);
   c->MaxTransformFeedbackInterleavedComponents =
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS);
286 287 288 289 290
   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);
291

292
   c->StripTextureBorder = GL_TRUE;
293 294 295 296

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

297
   if (can_ubo) {
298
      extensions->ARB_uniform_buffer_object = GL_TRUE;
299
      c->UniformBufferOffsetAlignment =
300
         screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
301
      c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
302 303 304
         c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
         c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
         c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
305
      assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
306
   }
307 308 309
}


310 311 312 313 314 315 316 317 318 319 320 321
/**
 * 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;
};

322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337
struct st_extension_format_mapping {
   int extension_offset[2];
   enum pipe_format format[8];

   /* 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.
 */
338 339 340 341 342 343 344
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)
345
{
346
   GLboolean *extension_table = (GLboolean *) extensions;
347 348
   unsigned i;
   int j;
349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369
   int num_formats = Elements(mapping->format);
   int num_ext = Elements(mapping->extension_offset);

   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],
                                         target, 0, bind_flags)) {
            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++)
370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
         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,
                            enum pipe_format *formats,
                            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],
                                         PIPE_TEXTURE_2D, i, bind)) {
            return i;
         }
      }
395
   }
396
   return 0;
397
}
398

399

400
/**
401 402 403 404 405
 * 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.
406
 */
407 408 409 410 411 412
void st_init_extensions(struct pipe_screen *screen,
                        gl_api api,
                        struct gl_constants *consts,
                        struct gl_extensions *extensions,
                        struct st_config_options *options,
                        boolean has_lib_dxtc)
413
{
414
   int i, glsl_feature_level;
415
   GLboolean *extension_table = (GLboolean *) extensions;
416 417

   static const struct st_extension_cap_mapping cap_mapping[] = {
418
      { o(ARB_base_instance),                PIPE_CAP_START_INSTANCE                   },
419
      { o(ARB_buffer_storage),               PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT },
420 421 422 423 424 425 426 427 428 429 430 431 432
      { o(ARB_depth_clamp),                  PIPE_CAP_DEPTH_CLIP_DISABLE               },
      { o(ARB_depth_texture),                PIPE_CAP_TEXTURE_SHADOW_MAP               },
      { o(ARB_draw_buffers_blend),           PIPE_CAP_INDEP_BLEND_FUNC                 },
      { o(ARB_draw_instanced),               PIPE_CAP_TGSI_INSTANCEID                  },
      { o(ARB_fragment_program_shadow),      PIPE_CAP_TEXTURE_SHADOW_MAP               },
      { 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                  },
      { o(ARB_point_sprite),                 PIPE_CAP_POINT_SPRITE                     },
      { o(ARB_seamless_cube_map),            PIPE_CAP_SEAMLESS_CUBE_MAP                },
      { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
      { o(ARB_shader_texture_lod),           PIPE_CAP_SM3                              },
      { o(ARB_shadow),                       PIPE_CAP_TEXTURE_SHADOW_MAP               },
433
      { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
434
      { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
435
      { o(ARB_timer_query),                  PIPE_CAP_QUERY_TIMESTAMP                  },
436
      { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
437
      { o(ARB_transform_feedback3),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },
438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454

      { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
      { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
      { o(EXT_stencil_two_side),             PIPE_CAP_TWO_SIDED_STENCIL                },
      { 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        },

      { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE    },
      { o(ATI_separate_stencil),             PIPE_CAP_TWO_SIDED_STENCIL                },
      { o(ATI_texture_mirror_once),          PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
      { o(NV_conditional_render),            PIPE_CAP_CONDITIONAL_RENDER               },
      { o(NV_texture_barrier),               PIPE_CAP_TEXTURE_BARRIER                  },
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option. */
455

456
      { o(OES_standard_derivatives),         PIPE_CAP_SM3                              },
457
      { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
458
      { o(ARB_texture_multisample),          PIPE_CAP_TEXTURE_MULTISAMPLE              },
459 460
      { o(ARB_texture_query_lod),            PIPE_CAP_TEXTURE_QUERY_LOD                },
      { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
461
      { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    }
462
   };
463

464 465 466 467 468 469 470
   /* Required: render target and sampler support */
   static const struct st_extension_format_mapping rendertarget_mapping[] = {
      { { o(ARB_texture_float) },
        { PIPE_FORMAT_R32G32B32A32_FLOAT,
          PIPE_FORMAT_R16G16B16A16_FLOAT } },

      { { o(ARB_texture_rgb10_a2ui) },
471 472 473
        { PIPE_FORMAT_R10G10B10A2_UINT,
          PIPE_FORMAT_B10G10R10A2_UINT },
         GL_TRUE }, /* at least one format must be supported */
474 475 476 477 478 479 480 481 482 483 484 485

      { { o(EXT_framebuffer_sRGB) },
        { PIPE_FORMAT_A8B8G8R8_SRGB,
          PIPE_FORMAT_B8G8R8A8_SRGB },
         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 } },
486 487 488 489

      { { o(ARB_texture_rg) },
        { PIPE_FORMAT_R8_UNORM,
          PIPE_FORMAT_R8G8_UNORM } },
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
   };

   /* 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),
514
          o(ANGLE_texture_compression_dxt) },
515 516 517 518 519
        { PIPE_FORMAT_DXT1_RGB,
          PIPE_FORMAT_DXT1_RGBA,
          PIPE_FORMAT_DXT3_RGBA,
          PIPE_FORMAT_DXT5_RGBA } },

520 521 522 523 524 525
      { { o(ARB_texture_compression_bptc) },
        { PIPE_FORMAT_BPTC_RGBA_UNORM,
          PIPE_FORMAT_BPTC_SRGBA,
          PIPE_FORMAT_BPTC_RGB_FLOAT,
          PIPE_FORMAT_BPTC_RGB_UFLOAT } },

526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546
      { { 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,
          PIPE_FORMAT_B8G8R8A8_SRGB },
        GL_TRUE }, /* at least one format must be supported */

      { { 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) },
547 548 549
        { PIPE_FORMAT_ETC1_RGB8,
          PIPE_FORMAT_R8G8B8A8_UNORM },
        GL_TRUE }, /* at least one format must be supported */
550 551 552 553 554

      { { o(ARB_stencil_texturing) },
        { PIPE_FORMAT_X24S8_UINT,
          PIPE_FORMAT_S8X24_UINT },
        GL_TRUE }, /* at least one format must be supported */
555 556 557 558 559 560 561 562 563 564 565 566 567
   };

   /* Required: vertex fetch support. */
   static const struct st_extension_format_mapping vertex_mapping[] = {
      { { 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 } },
568 569
      { { o(ARB_vertex_type_10f_11f_11f_rev) },
        { PIPE_FORMAT_R11G11B10_FLOAT } },
570 571
   };

572 573 574 575 576 577 578 579
   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,
        } },
   };

580 581 582
   /*
    * Extensions that are supported by all Gallium drivers:
    */
583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623
   extensions->ARB_ES2_compatibility = GL_TRUE;
   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;
   extensions->ARB_fragment_shader = GL_TRUE;
   extensions->ARB_half_float_vertex = GL_TRUE;
   extensions->ARB_internalformat_query = GL_TRUE;
   extensions->ARB_map_buffer_range = GL_TRUE;
   extensions->ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
   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;

   extensions->EXT_texture_env_dot3 = GL_TRUE;
   extensions->EXT_vertex_array_bgra = GL_TRUE;

   extensions->ATI_texture_env_combine3 = GL_TRUE;

   extensions->MESA_pack_invert = GL_TRUE;

   extensions->NV_fog_distance = GL_TRUE;
   extensions->NV_texture_env_combine4 = GL_TRUE;
   extensions->NV_texture_rectangle = GL_TRUE;
   extensions->NV_vdpau_interop = GL_TRUE;

   extensions->OES_EGL_image = GL_TRUE;
   extensions->OES_EGL_image_external = GL_TRUE;
   extensions->OES_draw_texture = GL_TRUE;
624

625 626 627
   /* Expose the extensions which directly correspond to gallium caps. */
   for (i = 0; i < Elements(cap_mapping); i++) {
      if (screen->get_param(screen, cap_mapping[i].cap)) {
628
         extension_table[cap_mapping[i].extension_offset] = GL_TRUE;
629 630 631
      }
   }

632
   /* Expose the extensions which directly correspond to gallium formats. */
633
   init_format_extensions(screen, extensions, rendertarget_mapping,
634 635
                          Elements(rendertarget_mapping), PIPE_TEXTURE_2D,
                          PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
636
   init_format_extensions(screen, extensions, depthstencil_mapping,
637 638
                          Elements(depthstencil_mapping), PIPE_TEXTURE_2D,
                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
639 640 641 642 643 644
   init_format_extensions(screen, extensions, texture_mapping,
                          Elements(texture_mapping), PIPE_TEXTURE_2D,
                          PIPE_BIND_SAMPLER_VIEW);
   init_format_extensions(screen, extensions, vertex_mapping,
                          Elements(vertex_mapping), PIPE_BUFFER,
                          PIPE_BIND_VERTEX_BUFFER);
645

646 647 648
   /* Figure out GLSL support. */
   glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);

649
   consts->GLSLVersion = glsl_feature_level;
650
   if (glsl_feature_level >= 330)
651
      consts->GLSLVersion = 330;
652

653
   _mesa_override_glsl_version(consts);
654

655 656 657
   if (options->force_glsl_version > 0 &&
       options->force_glsl_version <= consts->GLSLVersion) {
      consts->ForceGLSLVersion = options->force_glsl_version;
658 659
   }

660 661 662
   if (glsl_feature_level >= 400)
      extensions->ARB_gpu_shader5 = GL_TRUE;

663 664
   /* This extension needs full OpenGL 3.2, but we don't know if that's
    * supported at this point. Only check the GLSL version. */
665
   if (consts->GLSLVersion >= 150 &&
666
       screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
667
      extensions->AMD_vertex_shader_layer = GL_TRUE;
668 669
   }

670 671 672
   if (consts->GLSLVersion >= 130) {
      consts->NativeIntegers = GL_TRUE;
      consts->MaxClipPlanes = 8;
673

674
      /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
675 676 677 678 679 680 681 682
      extensions->ARB_conservative_depth = GL_TRUE;
      extensions->ARB_shading_language_packing = GL_TRUE;
      extensions->OES_depth_texture_cube_map = GL_TRUE;
      extensions->ARB_shading_language_420pack = GL_TRUE;
      extensions->ARB_texture_query_levels = GL_TRUE;

      if (!options->disable_shader_bit_encoding) {
         extensions->ARB_shader_bit_encoding = GL_TRUE;
683
      }
684

685
      extensions->EXT_shader_integer_mix = GL_TRUE;
686 687 688 689 690 691
   } else {
      /* Optional integer support for GLSL 1.2. */
      if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
                                   PIPE_SHADER_CAP_INTEGERS) &&
          screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                   PIPE_SHADER_CAP_INTEGERS)) {
692
         consts->NativeIntegers = GL_TRUE;
693

694
         extensions->EXT_shader_integer_mix = GL_TRUE;
695 696 697
      }
   }

698
   /* Below are the cases which cannot be moved into tables easily. */
699

700 701 702
   if (!has_lib_dxtc && !options->force_s3tc_enable) {
      extensions->EXT_texture_compression_s3tc = GL_FALSE;
      extensions->ANGLE_texture_compression_dxt = GL_FALSE;
703 704
   }

705 706
   if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
                                PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
707
#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
708
      extensions->ARB_geometry_shader4 = GL_TRUE;
709
#endif
710
   }
Marek Olšák's avatar
Marek Olšák committed
711

712
   extensions->NV_primitive_restart = GL_TRUE;
713
   if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
714
      consts->PrimitiveRestartInSoftware = GL_TRUE;
715 716
   }

717
   /* ARB_color_buffer_float. */
718
   if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
719
      extensions->ARB_color_buffer_float = GL_TRUE;
720
   }
721

Marek Olšák's avatar
Marek Olšák committed
722
   if (screen->fence_finish) {
723
      extensions->ARB_sync = GL_TRUE;
Marek Olšák's avatar
Marek Olšák committed
724
   }
725

726
   /* Maximum sample count. */
727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
   {
      enum pipe_format color_formats[] = {
         PIPE_FORMAT_R8G8B8A8_UNORM,
         PIPE_FORMAT_B8G8R8A8_UNORM,
         PIPE_FORMAT_A8R8G8B8_UNORM,
         PIPE_FORMAT_A8B8G8R8_UNORM,
      };
      enum pipe_format depth_formats[] = {
         PIPE_FORMAT_Z16_UNORM,
         PIPE_FORMAT_Z24X8_UNORM,
         PIPE_FORMAT_X8Z24_UNORM,
         PIPE_FORMAT_Z32_UNORM,
         PIPE_FORMAT_Z32_FLOAT
      };
      enum pipe_format int_formats[] = {
         PIPE_FORMAT_R8G8B8A8_SINT
      };

      consts->MaxSamples =
         get_max_samples_for_formats(screen, Elements(color_formats),
                                     color_formats, 16,
                                     PIPE_BIND_RENDER_TARGET);

      consts->MaxColorTextureSamples =
         get_max_samples_for_formats(screen, Elements(color_formats),
                                     color_formats, consts->MaxSamples,
                                     PIPE_BIND_SAMPLER_VIEW);

      consts->MaxDepthTextureSamples =
         get_max_samples_for_formats(screen, Elements(depth_formats),
                                     depth_formats, consts->MaxSamples,
                                     PIPE_BIND_SAMPLER_VIEW);

      consts->MaxIntegerSamples =
         get_max_samples_for_formats(screen, Elements(int_formats),
                                     int_formats, consts->MaxSamples,
                                     PIPE_BIND_SAMPLER_VIEW);
764
   }
765
   if (consts->MaxSamples == 1) {
766
      /* one sample doesn't really make sense */
767
      consts->MaxSamples = 0;
768
   }
769 770 771
   else if (consts->MaxSamples >= 2) {
      extensions->EXT_framebuffer_multisample = GL_TRUE;
      extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
772
   }
773

774 775 776 777 778
   if (consts->MaxSamples == 0 && screen->get_param(screen, PIPE_CAP_FAKE_SW_MSAA)) {
	consts->FakeSWMSAA = GL_TRUE;
        extensions->EXT_framebuffer_multisample = GL_TRUE;
        extensions->EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
        extensions->ARB_texture_multisample = GL_TRUE;
779 780
   }

781 782 783
   if (consts->MaxDualSourceDrawBuffers > 0 &&
       !options->disable_blend_func_extended)
      extensions->ARB_blend_func_extended = GL_TRUE;
784

785 786 787
   if (screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED) ||
       extensions->ARB_timer_query) {
      extensions->EXT_timer_query = GL_TRUE;
788
   }
789

790 791 792
   if (extensions->ARB_transform_feedback2 &&
       extensions->ARB_draw_instanced) {
      extensions->ARB_transform_feedback_instanced = GL_TRUE;
793
   }
794 795
   if (options->force_glsl_extensions_warn)
      consts->ForceGLSLExtensionsWarn = 1;
796

797 798
   if (options->disable_glsl_line_continuations)
      consts->DisableGLSLLineContinuations = 1;
799

800 801
   if (options->allow_glsl_extension_directive_midshader)
      consts->AllowGLSLExtensionDirectiveMidShader = GL_TRUE;
802

803
   consts->MinMapBufferAlignment =
804
      screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT);
805

806
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS)) {
807
      extensions->ARB_texture_buffer_object = GL_TRUE;
808

809
      consts->MaxTextureBufferSize =
810 811
         _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE),
              (1u << 31) - 1);
812
      consts->TextureBufferOffsetAlignment =
813 814
         screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);

815 816
      if (consts->TextureBufferOffsetAlignment)
         extensions->ARB_texture_buffer_range = GL_TRUE;
817

818 819 820
      init_format_extensions(screen, extensions, tbo_rgb32,
                             Elements(tbo_rgb32), PIPE_BUFFER,
                             PIPE_BIND_SAMPLER_VIEW);
821 822
   }

823
   if (screen->get_param(screen, PIPE_CAP_MIXED_FRAMEBUFFER_SIZES)) {
824
      extensions->ARB_framebuffer_object = GL_TRUE;
825
   }
826 827 828 829 830 831 832 833 834 835 836

   /* Unpacking a varying in the fragment shader costs 1 texture indirection.
    * If the number of available texture indirections is very limited, then we
    * prefer to disable varying packing rather than run the risk of varying
    * packing preventing a shader from running.
    */
   if (screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS) <= 8) {
      /* We can't disable varying packing if transform feedback is available,
       * because transform feedback code assumes a packed varying layout.
       */
837 838
      if (!extensions->EXT_transform_feedback)
         consts->DisableVaryingPacking = GL_TRUE;
839
   }
840

841 842 843 844 845 846 847 848 849
   if (api == API_OPENGL_CORE) {
      consts->MaxViewports = screen->get_param(screen, PIPE_CAP_MAX_VIEWPORTS);
      if (consts->MaxViewports >= 16) {
         consts->ViewportBounds.Min = -16384.0;
         consts->ViewportBounds.Max = 16384.0;
         extensions->ARB_viewport_array = GL_TRUE;
         extensions->ARB_fragment_layer_viewport = GL_TRUE;
         if (extensions->AMD_vertex_shader_layer)
            extensions->AMD_vertex_shader_viewport_index = GL_TRUE;
850 851
      }
   }
852 853
   if (consts->MaxProgramTextureGatherComponents > 0)
      extensions->ARB_texture_gather = GL_TRUE;
854 855 856 857 858 859

   /* GL_ARB_ES3_compatibility.
    *
    * Assume that ES3 is supported if GLSL 3.30 is supported.
    * (OpenGL 3.3 is a requirement for that extension.)
    */
860
   if (consts->GLSLVersion >= 330 &&
861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879
       /* Requirements for ETC2 emulation. */
       screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_UNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R16_SNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R16G16_SNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW)) {
880
      extensions->ARB_ES3_compatibility = GL_TRUE;
881
   }
882
}