st_extensions.c 27.3 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
   c->MaxDrawBuffers
112
      = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
113
              1, MAX_DRAW_BUFFERS);
114 115

   c->MaxLineWidth
116
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
117
   c->MaxLineWidthAA
118
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
119 120

   c->MaxPointSize
121
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
122
   c->MaxPointSizeAA
123
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
124 125 126 127
   /* 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);
128 129 130 131 132
   /* 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;
133 134

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

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

Brian's avatar
Brian committed
140 141 142
   c->MaxDrawBuffers
      = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
              1, MAX_DRAW_BUFFERS);
143

144 145
   /* Quads always follow GL provoking rules. */
   c->QuadsFollowProvokingVertexConvention = GL_FALSE;
146

147 148 149
   for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options =
         &st->ctx->ShaderCompilerOptions[sh];
150
      struct gl_program_constants *pc;
151 152

      switch (sh) {
153 154 155 156 157 158 159 160 161
      case PIPE_SHADER_FRAGMENT:
         pc = &c->FragmentProgram;
         break;
      case PIPE_SHADER_VERTEX:
         pc = &c->VertexProgram;
         break;
      case PIPE_SHADER_GEOMETRY:
         pc = &c->GeometryProgram;
         break;
162 163 164
      default:
         assert(0);
         continue;
165 166
      }

167 168 169 170 171 172 173 174
      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);
175
      pc->MaxUniformComponents     = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
176 177
      /* raise MaxParameters if native support is higher */
      pc->MaxParameters            = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
178

179 180 181
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
182 183
      pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
      pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
184

185 186
      options->EmitNoNoise = TRUE;

187
      /* TODO: make these more fine-grained if anyone needs it */
188
      options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
189 190 191
      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);
192

193
      options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
194

195
      options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
196
                                        PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
197
      options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
198
                                        PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
199
      options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
200
                                        PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
201
      options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
202 203
                                        PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);

Brian Paul's avatar
Brian Paul committed
204
      if (options->EmitNoLoops)
205
         options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
206
   }
207 208 209 210 211 212

   /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
    * and is set in MaxNativeAttribs. It's always 2 colors + N generic
    * attributes. The GLSL compiler never uses COLORn for varyings, so we
    * subtract the 2 colors to get the maximum number of varyings (generic
    * attributes) supported by a driver. */
213
   c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
214
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
215 216 217

   /* XXX we'll need a better query here someday */
   if (screen->get_param(screen, PIPE_CAP_GLSL)) {
218 219 220
      c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
      c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);

221
      c->GLSLVersion = 120;
222
      _mesa_override_glsl_version(st->ctx);
223
      c->UniformBooleanTrue = ~0;
224
   }
225 226

   c->StripTextureBorder = GL_TRUE;
227 228 229
}


230 231 232 233 234 235 236 237 238
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;
}


239
/**
240 241 242 243 244
 * 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.
245 246 247
 */
void st_init_extensions(struct st_context *st)
{
248
   struct pipe_screen *screen = st->pipe->screen;
249
   struct gl_context *ctx = st->ctx;
250
   int i;
251 252 253 254

   /*
    * Extensions that are supported by all Gallium drivers:
    */
255
   ctx->Extensions.ARB_copy_buffer = GL_TRUE;
256
   ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
257
   ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
258
   ctx->Extensions.ARB_fragment_program = GL_TRUE;
259
   ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
260
   ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
261
   ctx->Extensions.ARB_sampler_objects = GL_TRUE;
262
   ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
263 264 265 266
   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;
267
   ctx->Extensions.ARB_texture_storage = GL_TRUE;
268
   ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
269
   ctx->Extensions.ARB_vertex_program = GL_TRUE;
270
   ctx->Extensions.ARB_window_pos = GL_TRUE;
271 272 273 274

   ctx->Extensions.EXT_blend_color = GL_TRUE;
   ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
   ctx->Extensions.EXT_blend_minmax = GL_TRUE;
275
   ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
276
   ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
277
   ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
278
   ctx->Extensions.EXT_fog_coord = GL_TRUE;
279
   ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
280 281
   ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
   ctx->Extensions.EXT_point_parameters = GL_TRUE;
282
   ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
283 284
   ctx->Extensions.EXT_secondary_color = GL_TRUE;
   ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
285
   ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
286

287 288
   ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;

289 290
   ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;

291 292
   ctx->Extensions.MESA_pack_invert = GL_TRUE;

293
   ctx->Extensions.NV_blend_square = GL_TRUE;
294
   ctx->Extensions.NV_fog_distance = GL_TRUE;
295
   ctx->Extensions.NV_texgen_reflection = GL_TRUE;
296
   ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
297
   ctx->Extensions.NV_texture_rectangle = GL_TRUE;
298 299
#if 0
   /* possibly could support the following two */
300 301
   ctx->Extensions.NV_vertex_program = GL_TRUE;
   ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
302
#endif
303

304 305
#if FEATURE_OES_EGL_image
   ctx->Extensions.OES_EGL_image = GL_TRUE;
306 307
   if (ctx->API != API_OPENGL)
      ctx->Extensions.OES_EGL_image_external = GL_TRUE;
308
#endif
309 310 311 312
#if FEATURE_OES_draw_texture
   ctx->Extensions.OES_draw_texture = GL_TRUE;
#endif

313 314 315
   /*
    * Extensions that depend on the driver/hardware:
    */
316 317 318 319
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
      ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
   }

320
   if (screen->get_param(screen, PIPE_CAP_GLSL)) {
321 322 323 324
      ctx->Extensions.ARB_fragment_shader = GL_TRUE;
      ctx->Extensions.ARB_vertex_shader = GL_TRUE;
      ctx->Extensions.ARB_shader_objects = GL_TRUE;
      ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
325 326
      ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
      ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
327 328
   }

329 330 331 332
   if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) {
      ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
   }

333 334
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
      ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
335
      ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
336 337
   }

338
   if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
339 340 341
      ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
   }

342
   if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
343
      ctx->Extensions.ATI_separate_stencil = GL_TRUE;
344
      ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
345 346
   }

347
   if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
348 349 350
      ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
   }

351
   if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
352
      ctx->Extensions.ARB_point_sprite = GL_TRUE;
353 354 355
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option.
       */
356 357
   }

358
   if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
359
      ctx->Extensions.ARB_occlusion_query = GL_TRUE;
360
      ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
361
   }
362 363 364
   if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
     ctx->Extensions.EXT_timer_query = GL_TRUE;
   }
365

366
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
367
      ctx->Extensions.ARB_depth_texture = GL_TRUE;
368
      ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
369
      ctx->Extensions.ARB_shadow = GL_TRUE;
Brian's avatar
Brian committed
370
      ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
371 372 373
      /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
   }

374 375 376
   /* GL_EXT_packed_depth_stencil requires both the ability to render to
    * a depth/stencil buffer and texture from depth/stencil source.
    */
377
   if (screen->is_format_supported(screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
378
                                   PIPE_TEXTURE_2D, 0,
379
                                   PIPE_BIND_DEPTH_STENCIL) &&
380
       screen->is_format_supported(screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
381
                                   PIPE_TEXTURE_2D, 0,
382
                                   PIPE_BIND_SAMPLER_VIEW)) {
383 384
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }
385
   else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
386
                                        PIPE_TEXTURE_2D, 0,
387
                                        PIPE_BIND_DEPTH_STENCIL) &&
388
            screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
389
                                        PIPE_TEXTURE_2D, 0,
390
                                        PIPE_BIND_SAMPLER_VIEW)) {
391 392 393
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }

394 395 396 397 398 399 400 401 402 403 404 405
   /* float support - assume nothing exclusively supports 64-bit floats */
   if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW |
                                   PIPE_BIND_RENDER_TARGET) &&
      screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW |
                                   PIPE_BIND_RENDER_TARGET)) {
      ctx->Extensions.ARB_texture_float = GL_TRUE;
   }

406
   /* sRGB support */
Jose Fonseca's avatar
Jose Fonseca committed
407
   if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
408
                                   PIPE_TEXTURE_2D, 0,
409
                                   PIPE_BIND_SAMPLER_VIEW) ||
Jose Fonseca's avatar
Jose Fonseca committed
410
      screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
411
                                   PIPE_TEXTURE_2D, 0,
412
                                   PIPE_BIND_SAMPLER_VIEW)) {
413
      ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
414
      ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
415 416
      if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
                                   PIPE_TEXTURE_2D, 0,
417
                                   PIPE_BIND_RENDER_TARGET) ||
418 419
          screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
                                   PIPE_TEXTURE_2D, 0,
420
                                   PIPE_BIND_RENDER_TARGET)) {
421 422 423
         ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
         ctx->Const.sRGBCapable = GL_TRUE;
      }
424
   }
425

426 427
   if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
                                   PIPE_TEXTURE_2D, 0,
428
                                   PIPE_BIND_SAMPLER_VIEW)) {
429 430 431
      ctx->Extensions.ARB_texture_rg = GL_TRUE;
   }

432
   /* s3tc support */
433
   if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
434
                                   PIPE_TEXTURE_2D, 0,
435
                                   PIPE_BIND_SAMPLER_VIEW) &&
436
       (ctx->Mesa_DXTn || st_get_s3tc_override())) {
437
      ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
Jose Fonseca's avatar
Jose Fonseca committed
438
      ctx->Extensions.S3_s3tc = GL_TRUE;
439
   }
440

441 442
   if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM,
                                   PIPE_TEXTURE_2D, 0,
443
                                   PIPE_BIND_SAMPLER_VIEW) &&
444 445
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM,
				   PIPE_TEXTURE_2D, 0,
446
                                   PIPE_BIND_SAMPLER_VIEW) &&
447 448
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
449
                                   PIPE_BIND_SAMPLER_VIEW) &&
450 451
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM,
                                   PIPE_TEXTURE_2D, 0,
452
                                   PIPE_BIND_SAMPLER_VIEW)
453 454 455 456
       ) {
     ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
   }

457 458
   if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM,
                                   PIPE_TEXTURE_2D, 0,
459
                                   PIPE_BIND_SAMPLER_VIEW) &&
460 461
       screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM,
                                   PIPE_TEXTURE_2D, 0,
462
                                   PIPE_BIND_SAMPLER_VIEW) &&
463 464
       screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
465
                                   PIPE_BIND_SAMPLER_VIEW) &&
466 467
       screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM,
                                   PIPE_TEXTURE_2D, 0,
468
                                   PIPE_BIND_SAMPLER_VIEW)) {
469 470 471 472 473
      ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
   }

   if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
474
                                   PIPE_BIND_SAMPLER_VIEW)) {
475 476 477
      ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
   }

478 479 480 481 482 483
   if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW)) {
      ctx->Extensions.EXT_texture_snorm = GL_TRUE;
   }

484
   /* ycbcr support */
Jose Fonseca's avatar
Jose Fonseca committed
485
   if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, 
486
                                   PIPE_TEXTURE_2D, 0,
487
                                   PIPE_BIND_SAMPLER_VIEW) ||
Jose Fonseca's avatar
Jose Fonseca committed
488
       screen->is_format_supported(screen, PIPE_FORMAT_YUYV, 
489
                                   PIPE_TEXTURE_2D, 0,
490
                                   PIPE_BIND_SAMPLER_VIEW)) {
491 492
      ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
   }
493

494
   /* GL_EXT_texture_array */
495
   if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS) > 1) {
496 497 498 499
      ctx->Extensions.EXT_texture_array = GL_TRUE;
      ctx->Extensions.MESA_texture_array = GL_TRUE;
   }

500 501 502 503 504
   /* GL_ARB_framebuffer_object */
   if (ctx->Extensions.EXT_packed_depth_stencil) {
      /* we support always support GL_EXT_framebuffer_blit */
      ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
   }
505

506
   if (screen->get_param(screen, PIPE_CAP_CONDITIONAL_RENDER)) {
507 508
      ctx->Extensions.NV_conditional_render = GL_TRUE;
   }
509 510 511 512 513

   if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
      ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
   }

514 515 516 517
   if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
      ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
   }

518 519 520
   /* GL_ARB_half_float_vertex */
   if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
                                   PIPE_BUFFER, 0,
521
                                   PIPE_BIND_VERTEX_BUFFER)) {
522 523 524
      ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
   }

525 526 527 528 529 530
   if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FIXED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER)) {
      ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
   }

531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557
   if (screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_UNORM,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_UNORM,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SNORM,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SNORM,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_USCALED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_USCALED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SSCALED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER) &&
       screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SSCALED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER)) {
      ctx->Extensions.ARB_vertex_type_2_10_10_10_rev = GL_TRUE;
   }

558
   if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
559
#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
560
      ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
561
#endif
562
   }
Marek Olšák's avatar
Marek Olšák committed
563

564 565 566
   ctx->Extensions.NV_primitive_restart = GL_TRUE;
   if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
      st->sw_primitive_restart = GL_TRUE;
567 568
   }

Marek Olšák's avatar
Marek Olšák committed
569 570 571
   if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
      ctx->Extensions.ARB_depth_clamp = GL_TRUE;
   }
572

573 574 575 576 577 578
   /* This extension does not actually require support of floating point
    * render targets, just clamping controls.
    * Advertise this extension if either fragment color clamping is supported
    * or no render targets having color values outside of the range [0, 1]
    * are supported, in which case the fragment color clamping has no effect
    * on rendering.
579
    */
580 581 582 583 584
   if (screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL) ||
       (!screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
        !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM,
Brian Paul's avatar
Brian Paul committed
585 586
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
587 588 589 590 591 592 593 594 595 596 597 598
        !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
        !screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
        !screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
        !screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET))) {
599
      ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
600
   }
601

602 603 604
   if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
      ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
   }
605

606
   if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
607
      ctx->Extensions.ARB_draw_instanced = GL_TRUE;
608 609
   }
   if (screen->get_param(screen, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR)) {
610
      ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
611
   }
Marek Olšák's avatar
Marek Olšák committed
612 613 614 615

   if (screen->fence_finish) {
      ctx->Extensions.ARB_sync = GL_TRUE;
   }
616

617
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_BARRIER)) {
618 619
      ctx->Extensions.NV_texture_barrier = GL_TRUE;
   }
620 621 622 623 624 625

   if (screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_SAMPLER_VIEW)) {
      ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;
   }
626 627 628 629 630 631 632

   if (screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_RENDER_TARGET |
                                   PIPE_BIND_SAMPLER_VIEW)) {
      ctx->Extensions.EXT_packed_float = GL_TRUE;
   }
633

634 635 636 637 638 639 640 641 642 643
   /* 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;
      }
   }

644 645 646 647 648 649 650
   if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE)) {
      ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
      ctx->Extensions.AMD_seamless_cubemap_per_texture = GL_TRUE;
   }
   else if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP)) {
      ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
   }
651 652 653 654

   if (screen->get_param(screen, PIPE_CAP_SM3)) {
      ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;
   }
655 656 657 658 659

   if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_DEPTH_STENCIL |
                                   PIPE_BIND_SAMPLER_VIEW) &&
660
       screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT_S8X24_UINT,
661 662 663 664 665
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_DEPTH_STENCIL |
                                   PIPE_BIND_SAMPLER_VIEW)) {
      ctx->Extensions.ARB_depth_buffer_float = GL_TRUE;
   }
666
}