st_extensions.c 27.8 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 34 35

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
36
#include "pipe/p_screen.h"
37 38 39 40 41

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


42
static int _min(int a, int b)
43 44 45 46
{
   return (a < b) ? a : b;
}

47
static float _maxf(float a, float b)
48 49 50 51
{
   return (a > b) ? a : b;
}

52
static int _clamp(int a, int min, int max)
53
{
54 55 56 57 58 59
   if (a < min)
      return min;
   else if (a > max)
      return max;
   else
      return a;
60 61 62
}


63 64 65 66
/**
 * Query driver to get implementation limits.
 * Note that we have to limit/clamp against Mesa's internal limits too.
 */
67 68
void st_init_limits(struct st_context *st)
{
69
   struct pipe_screen *screen = st->pipe->screen;
70
   struct gl_constants *c = &st->ctx->Const;
71
   gl_shader_type sh;
72 73

   c->MaxTextureLevels
74
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
75
            MAX_TEXTURE_LEVELS);
76

77
   c->Max3DTextureLevels
78
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
79
            MAX_3D_TEXTURE_LEVELS);
80

81
   c->MaxCubeTextureLevels
82
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
83
            MAX_CUBE_TEXTURE_LEVELS);
84

85
   c->MaxTextureRectSize
86
      = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
87

88 89 90
   c->MaxArrayTextureLayers
      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);

91
   c->MaxTextureImageUnits
92
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
93
            MAX_TEXTURE_IMAGE_UNITS);
94

95
   c->MaxVertexTextureImageUnits
96 97
      = _min(screen->get_param(screen, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS),
             MAX_VERTEX_TEXTURE_IMAGE_UNITS);
98

99 100 101 102
   c->MaxCombinedTextureImageUnits
      = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
             MAX_COMBINED_TEXTURE_IMAGE_UNITS);

103 104
   c->MaxTextureCoordUnits
      = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
105

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

108
   c->MaxDrawBuffers
109
      = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
110
              1, MAX_DRAW_BUFFERS);
111 112

   c->MaxLineWidth
113
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
114
   c->MaxLineWidthAA
115
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
116 117

   c->MaxPointSize
118
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
119
   c->MaxPointSizeAA
120
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
121 122 123 124
   /* 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);
125 126 127 128 129
   /* 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;
130 131

   c->MaxTextureMaxAnisotropy
132
      = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
133 134

   c->MaxTextureLodBias
135
      = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
136

Brian's avatar
Brian committed
137 138 139
   c->MaxDrawBuffers
      = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
              1, MAX_DRAW_BUFFERS);
140

141 142
   /* Quads always follow GL provoking rules. */
   c->QuadsFollowProvokingVertexConvention = GL_FALSE;
143

144 145 146
   for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
      struct gl_shader_compiler_options *options =
         &st->ctx->ShaderCompilerOptions[sh];
147
      struct gl_program_constants *pc;
148 149

      switch (sh) {
150 151 152 153 154 155 156 157 158
      case PIPE_SHADER_FRAGMENT:
         pc = &c->FragmentProgram;
         break;
      case PIPE_SHADER_VERTEX:
         pc = &c->VertexProgram;
         break;
      case PIPE_SHADER_GEOMETRY:
         pc = &c->GeometryProgram;
         break;
159 160 161
      default:
         assert(0);
         continue;
162 163
      }

164 165 166 167 168 169 170 171
      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);
172
      pc->MaxUniformComponents     = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
173 174
      /* raise MaxParameters if native support is higher */
      pc->MaxParameters            = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
175

176 177 178 179 180 181
      /* Gallium doesn't really care about local vs. env parameters so use the
       * same limits.
       */
      pc->MaxLocalParams = pc->MaxParameters;
      pc->MaxEnvParams = pc->MaxParameters;

182 183
      options->EmitNoNoise = TRUE;

184
      /* TODO: make these more fine-grained if anyone needs it */
185
      options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
186 187 188
      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);
189

190
      options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
191

192
      options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
193
                                        PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
194
      options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
195
                                        PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
196
      options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
197
                                        PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
198
      options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
199 200
                                        PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);

Brian Paul's avatar
Brian Paul committed
201
      if (options->EmitNoLoops)
202
         options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
203
   }
204 205 206 207 208 209

   /* 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. */
210
   c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
211
   c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
212 213 214

   /* XXX we'll need a better query here someday */
   if (screen->get_param(screen, PIPE_CAP_GLSL)) {
215 216 217
      c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
      c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);

218
      c->GLSLVersion = 120;
219
      c->UniformBooleanTrue = ~0;
220
   }
221 222 223
}


224 225 226 227 228 229 230 231 232
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;
}


233
/**
234 235 236 237 238
 * 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.
239 240 241
 */
void st_init_extensions(struct st_context *st)
{
242
   struct pipe_screen *screen = st->pipe->screen;
243
   struct gl_context *ctx = st->ctx;
244
   int i;
245 246 247 248

   /*
    * Extensions that are supported by all Gallium drivers:
    */
249
   ctx->Extensions.ARB_copy_buffer = GL_TRUE;
250
   ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
251
   ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
252
   ctx->Extensions.ARB_fragment_program = GL_TRUE;
253
   ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
254
   ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
255
   ctx->Extensions.ARB_multisample = GL_TRUE;
256
   ctx->Extensions.ARB_sampler_objects = GL_TRUE;
257
   ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
258
   ctx->Extensions.ARB_texture_compression = GL_TRUE;
259 260 261 262
   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;
263
   ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
264
   ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
Brian Paul's avatar
Brian Paul committed
265
   ctx->Extensions.ARB_vertex_program = GL_TRUE;
266
   ctx->Extensions.ARB_window_pos = GL_TRUE;
267 268 269 270 271 272

   ctx->Extensions.EXT_blend_color = GL_TRUE;
   ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
   ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
   ctx->Extensions.EXT_blend_minmax = GL_TRUE;
   ctx->Extensions.EXT_blend_subtract = GL_TRUE;
273
   ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
274
   ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
275
   ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
276
   ctx->Extensions.EXT_fog_coord = GL_TRUE;
277
   ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
278 279 280
   ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
   ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
   ctx->Extensions.EXT_point_parameters = GL_TRUE;
281
   ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
282 283 284 285 286 287
   ctx->Extensions.EXT_secondary_color = GL_TRUE;
   ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
   ctx->Extensions.EXT_texture_env_add = GL_TRUE;
   ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
   ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
   ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
288
   ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
289 290
   if (ctx->API == API_OPENGLES || ctx->API == API_OPENGLES2)
	   ctx->Extensions.EXT_texture_format_BGRA8888 = GL_TRUE;
291

292 293
   ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;

294 295
   ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;

296 297
   ctx->Extensions.MESA_pack_invert = GL_TRUE;

298 299
   ctx->Extensions.NV_blend_square = GL_TRUE;
   ctx->Extensions.NV_texgen_reflection = GL_TRUE;
300
   ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
301
   ctx->Extensions.NV_texture_rectangle = GL_TRUE;
302 303
#if 0
   /* possibly could support the following two */
304 305
   ctx->Extensions.NV_vertex_program = GL_TRUE;
   ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
306
#endif
307

308 309 310
#if FEATURE_OES_EGL_image
   ctx->Extensions.OES_EGL_image = GL_TRUE;
#endif
311 312 313 314
#if FEATURE_OES_draw_texture
   ctx->Extensions.OES_draw_texture = GL_TRUE;
#endif

315
   ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
316 317 318 319

   /*
    * Extensions that depend on the driver/hardware:
    */
320
   if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
321 322 323
      ctx->Extensions.ARB_draw_buffers = GL_TRUE;
   }

324 325 326 327
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
      ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
   }

328
   if (screen->get_param(screen, PIPE_CAP_GLSL)) {
329 330 331 332
      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;
333 334
      ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
      ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
335 336
   }

337 338 339 340
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) {
      ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
   }

341 342 343 344
   if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) {
      ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
   }

345 346
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
      ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
347
      ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
348 349
   }

350
   if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
351 352 353
      ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
   }

354
   if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
355 356 357
      ctx->Extensions.ARB_multitexture = GL_TRUE;
   }

358
   if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
359
      ctx->Extensions.ATI_separate_stencil = GL_TRUE;
360
      ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
361 362
   }

363
   if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
364 365 366
      ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
   }

367
   if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
368
      ctx->Extensions.ARB_point_sprite = GL_TRUE;
369 370 371
      /* GL_NV_point_sprite is not supported by gallium because we don't
       * support the GL_POINT_SPRITE_R_MODE_NV option.
       */
372 373
   }

374
   if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
375
      ctx->Extensions.ARB_occlusion_query = GL_TRUE;
376
      ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
377
   }
378 379 380
   if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
     ctx->Extensions.EXT_timer_query = GL_TRUE;
   }
381

382
   if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
383
      ctx->Extensions.ARB_depth_texture = GL_TRUE;
384
      ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
385
      ctx->Extensions.ARB_shadow = GL_TRUE;
Brian's avatar
Brian committed
386
      ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
387 388 389
      /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
   }

390 391 392
   /* GL_EXT_packed_depth_stencil requires both the ability to render to
    * a depth/stencil buffer and texture from depth/stencil source.
    */
393
   if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
394
                                   PIPE_TEXTURE_2D, 0,
395
                                   PIPE_BIND_DEPTH_STENCIL) &&
396
       screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
397
                                   PIPE_TEXTURE_2D, 0,
398
                                   PIPE_BIND_SAMPLER_VIEW)) {
399 400
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }
401
   else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
402
                                        PIPE_TEXTURE_2D, 0,
403
                                        PIPE_BIND_DEPTH_STENCIL) &&
404
            screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
405
                                        PIPE_TEXTURE_2D, 0,
406
                                        PIPE_BIND_SAMPLER_VIEW)) {
407 408 409
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }

410 411 412 413 414 415 416 417 418 419 420 421
   /* 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;
   }

422
   /* sRGB support */
Jose Fonseca's avatar
Jose Fonseca committed
423
   if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
424
                                   PIPE_TEXTURE_2D, 0,
425
                                   PIPE_BIND_SAMPLER_VIEW) ||
Jose Fonseca's avatar
Jose Fonseca committed
426
      screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
427
                                   PIPE_TEXTURE_2D, 0,
428
                                   PIPE_BIND_SAMPLER_VIEW)) {
429
      ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
430
      ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
431 432
      if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
                                   PIPE_TEXTURE_2D, 0,
433
                                   PIPE_BIND_RENDER_TARGET) ||
434 435
          screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
                                   PIPE_TEXTURE_2D, 0,
436
                                   PIPE_BIND_RENDER_TARGET)) {
437 438 439
         ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
         ctx->Const.sRGBCapable = GL_TRUE;
      }
440
   }
441

442 443
   if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
                                   PIPE_TEXTURE_2D, 0,
444
                                   PIPE_BIND_SAMPLER_VIEW)) {
445 446 447
      ctx->Extensions.ARB_texture_rg = GL_TRUE;
   }

448
   /* s3tc support */
449
   if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
450
                                   PIPE_TEXTURE_2D, 0,
451
                                   PIPE_BIND_SAMPLER_VIEW) &&
452
       (ctx->Mesa_DXTn || st_get_s3tc_override())) {
453
      ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
Jose Fonseca's avatar
Jose Fonseca committed
454
      ctx->Extensions.S3_s3tc = GL_TRUE;
455
   }
456

457 458
   if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM,
                                   PIPE_TEXTURE_2D, 0,
459
                                   PIPE_BIND_SAMPLER_VIEW) &&
460 461
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM,
				   PIPE_TEXTURE_2D, 0,
462
                                   PIPE_BIND_SAMPLER_VIEW) &&
463 464
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
465
                                   PIPE_BIND_SAMPLER_VIEW) &&
466 467
       screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM,
                                   PIPE_TEXTURE_2D, 0,
468
                                   PIPE_BIND_SAMPLER_VIEW)
469 470 471 472
       ) {
     ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
   }

473 474
   if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM,
                                   PIPE_TEXTURE_2D, 0,
475
                                   PIPE_BIND_SAMPLER_VIEW) &&
476 477
       screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM,
                                   PIPE_TEXTURE_2D, 0,
478
                                   PIPE_BIND_SAMPLER_VIEW) &&
479 480
       screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
481
                                   PIPE_BIND_SAMPLER_VIEW) &&
482 483
       screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM,
                                   PIPE_TEXTURE_2D, 0,
484
                                   PIPE_BIND_SAMPLER_VIEW)) {
485 486 487 488 489
      ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
   }

   if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
                                   PIPE_TEXTURE_2D, 0,
490
                                   PIPE_BIND_SAMPLER_VIEW)) {
491 492 493
      ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
   }

494 495 496 497 498 499
   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;
   }

500
   /* ycbcr support */
Jose Fonseca's avatar
Jose Fonseca committed
501
   if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, 
502
                                   PIPE_TEXTURE_2D, 0,
503
                                   PIPE_BIND_SAMPLER_VIEW) ||
Jose Fonseca's avatar
Jose Fonseca committed
504
       screen->is_format_supported(screen, PIPE_FORMAT_YUYV, 
505
                                   PIPE_TEXTURE_2D, 0,
506
                                   PIPE_BIND_SAMPLER_VIEW)) {
507 508
      ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
   }
509

510
   /* GL_EXT_texture_array */
511
   if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS) > 1) {
512 513 514 515
      ctx->Extensions.EXT_texture_array = GL_TRUE;
      ctx->Extensions.MESA_texture_array = GL_TRUE;
   }

516 517 518 519 520
   /* 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;
   }
521 522 523 524

   if (st->pipe->render_condition) {
      ctx->Extensions.NV_conditional_render = GL_TRUE;
   }
525 526 527 528 529

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

530 531 532 533
   if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
      ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
   }

534 535 536
   /* GL_ARB_half_float_vertex */
   if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
                                   PIPE_BUFFER, 0,
537
                                   PIPE_BIND_VERTEX_BUFFER)) {
538 539 540
      ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
   }

541 542 543 544 545 546
   if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FIXED,
                                   PIPE_BUFFER, 0,
                                   PIPE_BIND_VERTEX_BUFFER)) {
      ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
   }

547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573
   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;
   }

574
   if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
575
#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
576
      ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
577
#endif
578
   }
Marek Olšák's avatar
Marek Olšák committed
579

580 581 582 583
   if (screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
      ctx->Extensions.NV_primitive_restart = GL_TRUE;
   }

Marek Olšák's avatar
Marek Olšák committed
584 585 586
   if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
      ctx->Extensions.ARB_depth_clamp = GL_TRUE;
   }
587

588 589 590 591 592 593
   /* 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.
594
    */
595 596 597 598 599
   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
600 601
                                     PIPE_TEXTURE_2D, 0,
                                     PIPE_BIND_RENDER_TARGET) &&
602 603 604 605 606 607 608 609 610 611 612 613
        !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))) {
614
      ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
615
   }
616

617 618 619
   if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
      ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
   }
620

621
   if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
622
      ctx->Extensions.ARB_draw_instanced = GL_TRUE;
623 624
   }
   if (screen->get_param(screen, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR)) {
625
      ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
626
   }
Marek Olšák's avatar
Marek Olšák committed
627 628 629 630

   if (screen->fence_finish) {
      ctx->Extensions.ARB_sync = GL_TRUE;
   }
631 632 633 634

   if (st->pipe->texture_barrier) {
      ctx->Extensions.NV_texture_barrier = GL_TRUE;
   }
635 636 637 638 639 640

   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;
   }
641 642 643 644 645 646 647

   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;
   }
648

649 650 651 652 653 654 655 656 657 658
   /* 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;
      }
   }

659 660 661 662 663 664 665
   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;
   }
666 667 668 669

   if (screen->get_param(screen, PIPE_CAP_SM3)) {
      ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;
   }
670 671 672 673 674 675 676 677 678 679 680

   if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_DEPTH_STENCIL |
                                   PIPE_BIND_SAMPLER_VIEW) &&
       screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED,
                                   PIPE_TEXTURE_2D, 0,
                                   PIPE_BIND_DEPTH_STENCIL |
                                   PIPE_BIND_SAMPLER_VIEW)) {
      ctx->Extensions.ARB_depth_buffer_float = GL_TRUE;
   }
681
}