st_extensions.c 24.6 KB
Newer Older
1 2 3
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4
 * Copyright (c) 2008 VMware, Inc.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
 * 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.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * 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/mfeatures.h"
33
#include "main/version.h"
34 35 36

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
37
#include "pipe/p_screen.h"
38 39 40 41 42

#include "st_context.h"
#include "st_extensions.h"


43
static int _min(int a, int b)
44 45 46 47
{
   return (a < b) ? a : b;
}

48
static float _maxf(float a, float b)
49 50 51 52
{
   return (a > b) ? a : b;
}

53
static int _clamp(int a, int min, int max)
54
{
55 56 57 58 59 60
   if (a < min)
      return min;
   else if (a > max)
      return max;
   else
      return a;
61 62 63
}


64 65 66 67
/**
 * Query driver to get implementation limits.
 * Note that we have to limit/clamp against Mesa's internal limits too.
 */
68 69
void st_init_limits(struct st_context *st)
{
70
   struct pipe_screen *screen = st->pipe->screen;
71
   struct gl_constants *c = &st->ctx->Const;
72
   gl_shader_type sh;
73 74

   c->MaxTextureLevels
75
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
76
            MAX_TEXTURE_LEVELS);
77

78
   c->Max3DTextureLevels
79
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
80
            MAX_3D_TEXTURE_LEVELS);
81

82
   c->MaxCubeTextureLevels
83
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
84
            MAX_CUBE_TEXTURE_LEVELS);
85

86
   c->MaxTextureRectSize
87
      = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
88

89 90 91
   c->MaxArrayTextureLayers
      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);

92
   c->MaxTextureImageUnits
93 94
      = _min(screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
                                      PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
95
            MAX_TEXTURE_IMAGE_UNITS);
96

97
   c->MaxVertexTextureImageUnits
98 99
      = _min(screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
                                      PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS),
100
             MAX_VERTEX_TEXTURE_IMAGE_UNITS);
101

102 103 104 105
   c->MaxCombinedTextureImageUnits
      = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
             MAX_COMBINED_TEXTURE_IMAGE_UNITS);

106 107
   c->MaxTextureCoordUnits
      = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
108

109
   c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits);
110

111 112 113 114 115 116 117 118
   /* 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;

119
   c->MaxDrawBuffers
120
      = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
121
              1, MAX_DRAW_BUFFERS);
122 123

   c->MaxLineWidth
124 125
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_LINE_WIDTH));
126
   c->MaxLineWidthAA
127 128
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_LINE_WIDTH_AA));
129 130

   c->MaxPointSize
131 132
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_POINT_WIDTH));
133
   c->MaxPointSizeAA
134 135
      = _maxf(1.0f, screen->get_paramf(screen,
                                       PIPE_CAPF_MAX_POINT_WIDTH_AA));
136 137 138 139
   /* called after _mesa_create_context/_mesa_init_point, fix default user
    * settable max point size up
    */
   st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA);
140 141 142 143 144
   /* 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;
145 146

   c->MaxTextureMaxAnisotropy
147 148
      = _maxf(2.0f, screen->get_paramf(screen,
                                 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY));
149 150

   c->MaxTextureLodBias
151
      = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS);
152

Brian's avatar
Brian committed
153 154 155
   c->MaxDrawBuffers
      = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
              1, MAX_DRAW_BUFFERS);
156

157 158
   c->QuadsFollowProvokingVertexConvention = screen->get_param(
      screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
159

160 161 162
   for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options =
         &st->ctx->ShaderCompilerOptions[sh];
163
      struct gl_program_constants *pc;
164 165

      switch (sh) {
166 167 168 169 170 171 172 173 174
      case PIPE_SHADER_FRAGMENT:
         pc = &c->FragmentProgram;
         break;
      case PIPE_SHADER_VERTEX:
         pc = &c->VertexProgram;
         break;
      case PIPE_SHADER_GEOMETRY:
         pc = &c->GeometryProgram;
         break;
175 176 177
      default:
         assert(0);
         continue;
178 179
      }

180 181 182 183 184 185 186 187
      pc->MaxNativeInstructions    = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
      pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
      pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
      pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
      pc->MaxNativeAttribs         = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
      pc->MaxNativeTemps           = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
      pc->MaxNativeAddressRegs     = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
      pc->MaxNativeParameters      = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);
188
      pc->MaxUniformComponents     = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
189 190
      /* raise MaxParameters if native support is higher */
      pc->MaxParameters            = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
191

192 193 194
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
195 196
      pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
      pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
197

198 199
      options->EmitNoNoise = TRUE;

200
      /* TODO: make these more fine-grained if anyone needs it */
201
      options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
202 203 204
      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);
205

206
      options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
207

208
      options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
209
                                        PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
210
      options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
211
                                        PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
212
      options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
213
                                        PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
214
      options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
215 216
                                        PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);

Brian Paul's avatar
Brian Paul committed
217
      if (options->EmitNoLoops)
218
         options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
219
   }
220

221 222 223 224
   /* 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);
225
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
226

227 228 229 230
   c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
   c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);

   c->UniformBooleanTrue = ~0;
231

232
   c->MaxTransformFeedbackSeparateAttribs =
233
      screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS);
234 235 236 237 238
   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);

239
   c->StripTextureBorder = GL_TRUE;
240 241 242 243 244 245

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

   c->GLSLSkipStrictMaxVaryingLimitCheck =
      screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS);
246 247 248
}


249 250 251 252 253 254 255 256
static GLboolean st_get_s3tc_override(void)
{
   const char *override = _mesa_getenv("force_s3tc_enable");
   if (override && !strcmp(override, "true"))
      return GL_TRUE;
   return GL_FALSE;
}

257 258 259 260 261 262 263 264 265 266 267 268
/**
 * 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;
};

269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
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.
 */
static void init_format_extensions(struct st_context *st,
                           const struct st_extension_format_mapping *mapping,
                           unsigned num_mappings,
                           enum pipe_texture_target target,
                           unsigned bind_flags)
{
   struct pipe_screen *screen = st->pipe->screen;
   GLboolean *extensions = (GLboolean *) &st->ctx->Extensions;
   int i, j;
   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++)
         extensions[mapping[i].extension_offset[j]] = GL_TRUE;
   }
}
318

319
/**
320 321 322 323 324
 * 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.
325 326 327
 */
void st_init_extensions(struct st_context *st)
{
328
   struct pipe_screen *screen = st->pipe->screen;
329
   struct gl_context *ctx = st->ctx;
330
   int i, glsl_feature_level;
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369
   GLboolean *extensions = (GLboolean *) &ctx->Extensions;

   static const struct st_extension_cap_mapping cap_mapping[] = {
      { 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               },
      { o(ARB_texture_non_power_of_two),     PIPE_CAP_NPOT_TEXTURES                    },
      { o(ARB_transform_feedback2),          PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME       },

      { o(EXT_blend_equation_separate),      PIPE_CAP_BLEND_EQUATION_SEPARATE          },
      { o(EXT_draw_buffers2),                PIPE_CAP_INDEP_BLEND_ENABLE               },
      { o(EXT_shadow_funcs),                 PIPE_CAP_TEXTURE_SHADOW_MAP               },
      { 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_timer_query),                  PIPE_CAP_TIMER_QUERY                      },
      { 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. */
      { o(MESA_texture_array),               PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS         },
   };
370

371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472
   /* 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) },
        { PIPE_FORMAT_B10G10R10A2_UINT } },

      { { 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 } },
   };

   /* 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 } },

      { { o(ARB_framebuffer_object),
          o(EXT_packed_depth_stencil) },
        { PIPE_FORMAT_S8_UINT_Z24_UNORM,
          PIPE_FORMAT_Z24_UNORM_S8_UINT },
        GL_TRUE }, /* at least one format must be supported */
   };

   /* 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(ARB_texture_rg) },
        { PIPE_FORMAT_R8G8_UNORM } },

      { { 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),
          o(S3_s3tc) },
        { PIPE_FORMAT_DXT1_RGB,
          PIPE_FORMAT_DXT1_RGBA,
          PIPE_FORMAT_DXT3_RGBA,
          PIPE_FORMAT_DXT5_RGBA } },

      { { 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) },
        { PIPE_FORMAT_ETC1_RGB8 } },
   };

   /* Required: vertex fetch support. */
   static const struct st_extension_format_mapping vertex_mapping[] = {
      { { o(ARB_ES2_compatibility) },
        { PIPE_FORMAT_R32G32B32A32_FIXED } },

      { { o(ARB_half_float_vertex) },
        { PIPE_FORMAT_R16G16B16A16_FLOAT } },

      { { 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 } },
   };

473 474 475
   /*
    * Extensions that are supported by all Gallium drivers:
    */
476
   ctx->Extensions.ARB_copy_buffer = GL_TRUE;
477
   ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
478
   ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
479
   ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
480
   ctx->Extensions.ARB_fragment_program = GL_TRUE;
481
   ctx->Extensions.ARB_fragment_shader = GL_TRUE;
482
   ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
483
   ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
484
   ctx->Extensions.ARB_sampler_objects = GL_TRUE;
485 486
   ctx->Extensions.ARB_shader_objects = GL_TRUE;
   ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
487
   ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
488 489 490 491
   ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
   ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
   ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
   ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
492
   ctx->Extensions.ARB_texture_storage = GL_TRUE;
493
   ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
494
   ctx->Extensions.ARB_vertex_program = GL_TRUE;
495
   ctx->Extensions.ARB_vertex_shader = GL_TRUE;
496
   ctx->Extensions.ARB_window_pos = GL_TRUE;
497 498 499 500

   ctx->Extensions.EXT_blend_color = GL_TRUE;
   ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
   ctx->Extensions.EXT_blend_minmax = GL_TRUE;
501
   ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
502
   ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
503
   ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
504
   ctx->Extensions.EXT_fog_coord = GL_TRUE;
505
   ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
506 507
   ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
   ctx->Extensions.EXT_point_parameters = GL_TRUE;
508
   ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
509
   ctx->Extensions.EXT_secondary_color = GL_TRUE;
510
   ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
511
   ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
512
   ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
513

514 515
   ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;

516 517
   ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;

518 519
   ctx->Extensions.MESA_pack_invert = GL_TRUE;

520
   ctx->Extensions.NV_blend_square = GL_TRUE;
521
   ctx->Extensions.NV_fog_distance = GL_TRUE;
522
   ctx->Extensions.NV_texgen_reflection = GL_TRUE;
523
   ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
524
   ctx->Extensions.NV_texture_rectangle = GL_TRUE;
525 526
#if 0
   /* possibly could support the following two */
527 528
   ctx->Extensions.NV_vertex_program = GL_TRUE;
   ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
529
#endif
530

531 532
#if FEATURE_OES_EGL_image
   ctx->Extensions.OES_EGL_image = GL_TRUE;
533 534
   if (ctx->API != API_OPENGL)
      ctx->Extensions.OES_EGL_image_external = GL_TRUE;
535
#endif
536 537 538 539
#if FEATURE_OES_draw_texture
   ctx->Extensions.OES_draw_texture = GL_TRUE;
#endif

540 541 542 543 544 545 546
   /* 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)) {
         extensions[cap_mapping[i].extension_offset] = GL_TRUE;
      }
   }

547 548 549 550 551 552 553 554 555 556 557 558
   /* Expose the extensions which directly correspond to gallium formats. */
   init_format_extensions(st, rendertarget_mapping,
                          Elements(rendertarget_mapping), PIPE_TEXTURE_2D,
                          PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW);
   init_format_extensions(st, depthstencil_mapping,
                          Elements(depthstencil_mapping), PIPE_TEXTURE_2D,
                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW);
   init_format_extensions(st, texture_mapping, Elements(texture_mapping),
                          PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW);
   init_format_extensions(st, vertex_mapping, Elements(vertex_mapping),
                          PIPE_BUFFER, PIPE_BIND_VERTEX_BUFFER);

559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585
   /* Figure out GLSL support. */
   glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL);

   if (glsl_feature_level >= 130) {
      ctx->Const.GLSLVersion = 130;
   } else {
      ctx->Const.GLSLVersion = 120;
   }

   _mesa_override_glsl_version(st->ctx);

   if (ctx->Const.GLSLVersion >= 130) {
      ctx->Const.NativeIntegers = GL_TRUE;
      ctx->Const.MaxClipPlanes = 8;

      /* Extensions that only depend on GLSL 1.3. */
      ctx->Extensions.ARB_conservative_depth = GL_TRUE;
   } 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)) {
         ctx->Const.NativeIntegers = GL_TRUE;
      }
   }

586
   /* Below are the cases which cannot be moved into tables easily. */
587

588 589 590
   if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) {
      ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE;
      ctx->Extensions.S3_s3tc = GL_FALSE;
591 592
   }

593 594
   if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
                                PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
595
#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
596
      ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
597
#endif
598
   }
Marek Olšák's avatar
Marek Olšák committed
599

600 601 602
   ctx->Extensions.NV_primitive_restart = GL_TRUE;
   if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
      st->sw_primitive_restart = GL_TRUE;
603 604
   }

605
   if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
606
      ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
607 608 609 610 611 612 613 614

      if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
         st->clamp_vert_color_in_shader = TRUE;
      }

      if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
         st->clamp_frag_color_in_shader = TRUE;
      }
615
   }
616

Marek Olšák's avatar
Marek Olšák committed
617 618 619
   if (screen->fence_finish) {
      ctx->Extensions.ARB_sync = GL_TRUE;
   }
620

621 622 623 624 625 626 627 628 629
   /* Maximum sample count. */
   for (i = 16; i > 0; --i) {
      if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM,
                                      PIPE_TEXTURE_2D, i,
                                      PIPE_BIND_RENDER_TARGET)) {
         ctx->Const.MaxSamples = i;
         break;
      }
   }
630
}