st_extensions.c revision 20836c81851e0df29a8ee9c86e5e5388738c840b
1/************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * Copyright (c) 2008 VMware, Inc. 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 **************************************************************************/ 28 29#include "main/imports.h" 30#include "main/context.h" 31#include "main/macros.h" 32#include "main/mfeatures.h" 33#include "main/version.h" 34 35#include "pipe/p_context.h" 36#include "pipe/p_defines.h" 37#include "pipe/p_screen.h" 38 39#include "st_context.h" 40#include "st_extensions.h" 41 42 43static int _min(int a, int b) 44{ 45 return (a < b) ? a : b; 46} 47 48static float _maxf(float a, float b) 49{ 50 return (a > b) ? a : b; 51} 52 53static int _clamp(int a, int min, int max) 54{ 55 if (a < min) 56 return min; 57 else if (a > max) 58 return max; 59 else 60 return a; 61} 62 63 64/** 65 * Query driver to get implementation limits. 66 * Note that we have to limit/clamp against Mesa's internal limits too. 67 */ 68void st_init_limits(struct st_context *st) 69{ 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 c->MaxArrayTextureLayers 90 = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS); 91 92 c->MaxTextureImageUnits 93 = _min(screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 94 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), 95 MAX_TEXTURE_IMAGE_UNITS); 96 97 c->MaxVertexTextureImageUnits 98 = _min(screen->get_shader_param(screen, PIPE_SHADER_VERTEX, 99 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), 100 MAX_VERTEX_TEXTURE_IMAGE_UNITS); 101 102 c->MaxCombinedTextureImageUnits 103 = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS), 104 MAX_COMBINED_TEXTURE_IMAGE_UNITS); 105 106 c->MaxTextureCoordUnits 107 = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS); 108 109 c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits); 110 111 /* Define max viewport size and max renderbuffer size in terms of 112 * max texture size (note: max tex RECT size = max tex 2D size). 113 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries. 114 */ 115 c->MaxViewportWidth = 116 c->MaxViewportHeight = 117 c->MaxRenderbufferSize = c->MaxTextureRectSize; 118 119 c->MaxDrawBuffers 120 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 121 1, MAX_DRAW_BUFFERS); 122 123 c->MaxLineWidth 124 = _maxf(1.0f, screen->get_paramf(screen, 125 PIPE_CAPF_MAX_LINE_WIDTH)); 126 c->MaxLineWidthAA 127 = _maxf(1.0f, screen->get_paramf(screen, 128 PIPE_CAPF_MAX_LINE_WIDTH_AA)); 129 130 c->MaxPointSize 131 = _maxf(1.0f, screen->get_paramf(screen, 132 PIPE_CAPF_MAX_POINT_WIDTH)); 133 c->MaxPointSizeAA 134 = _maxf(1.0f, screen->get_paramf(screen, 135 PIPE_CAPF_MAX_POINT_WIDTH_AA)); 136 /* called after _mesa_create_context/_mesa_init_point, fix default user 137 * settable max point size up 138 */ 139 st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA); 140 /* these are not queryable. Note that GL basically mandates a 1.0 minimum 141 * for non-aa sizes, but we can go down to 0.0 for aa points. 142 */ 143 c->MinPointSize = 1.0f; 144 c->MinPointSizeAA = 0.0f; 145 146 c->MaxTextureMaxAnisotropy 147 = _maxf(2.0f, screen->get_paramf(screen, 148 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY)); 149 150 c->MaxTextureLodBias 151 = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS); 152 153 c->MaxDrawBuffers 154 = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 155 1, MAX_DRAW_BUFFERS); 156 157 c->QuadsFollowProvokingVertexConvention = screen->get_param( 158 screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION); 159 160 for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) { 161 struct gl_shader_compiler_options *options = 162 &st->ctx->ShaderCompilerOptions[sh]; 163 struct gl_program_constants *pc; 164 165 switch (sh) { 166 case PIPE_SHADER_FRAGMENT: 167 pc = &c->FragmentProgram; 168 break; 169 case PIPE_SHADER_VERTEX: 170 pc = &c->VertexProgram; 171 break; 172 case PIPE_SHADER_GEOMETRY: 173 pc = &c->GeometryProgram; 174 break; 175 default: 176 assert(0); 177 continue; 178 } 179 180 pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS); 181 pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS); 182 pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS); 183 pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS); 184 pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS); 185 pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS); 186 pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS); 187 pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS); 188 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS); 189 /* raise MaxParameters if native support is higher */ 190 pc->MaxParameters = MAX2(pc->MaxParameters, pc->MaxNativeParameters); 191 192 /* Gallium doesn't really care about local vs. env parameters so use the 193 * same limits. 194 */ 195 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS); 196 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS); 197 198 options->EmitNoNoise = TRUE; 199 200 /* 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 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH); 203 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES); 204 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 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR); 216 217 if (options->EmitNoLoops) 218 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536); 219 else 220 options->MaxUnrollIterations = 255; /* SM3 limit */ 221 } 222 223 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number 224 * of inputs. It's always 2 colors + N generic inputs. */ 225 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 226 PIPE_SHADER_CAP_MAX_INPUTS); 227 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING); 228 229 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET); 230 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET); 231 232 c->UniformBooleanTrue = ~0; 233 234 c->MaxTransformFeedbackSeparateAttribs = 235 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS); 236 c->MaxTransformFeedbackSeparateComponents = 237 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS); 238 c->MaxTransformFeedbackInterleavedComponents = 239 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS); 240 241 c->StripTextureBorder = GL_TRUE; 242 243 c->GLSLSkipStrictMaxUniformLimitCheck = 244 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS); 245 246 c->GLSLSkipStrictMaxVaryingLimitCheck = 247 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS); 248} 249 250 251static GLboolean st_get_s3tc_override(void) 252{ 253 const char *override = _mesa_getenv("force_s3tc_enable"); 254 if (override && !strcmp(override, "true")) 255 return GL_TRUE; 256 return GL_FALSE; 257} 258 259/** 260 * Given a member \c x of struct gl_extensions, return offset of 261 * \c x in bytes. 262 */ 263#define o(x) offsetof(struct gl_extensions, x) 264 265 266struct st_extension_cap_mapping { 267 int extension_offset; 268 int cap; 269}; 270 271struct st_extension_format_mapping { 272 int extension_offset[2]; 273 enum pipe_format format[8]; 274 275 /* If TRUE, at least one format must be supported for the extensions to be 276 * advertised. If FALSE, all the formats must be supported. */ 277 GLboolean need_at_least_one; 278}; 279 280/** 281 * Enable extensions if certain pipe formats are supported by the driver. 282 * What extensions will be enabled and what formats must be supported is 283 * described by the array of st_extension_format_mapping. 284 * 285 * target and bind_flags are passed to is_format_supported. 286 */ 287static void init_format_extensions(struct st_context *st, 288 const struct st_extension_format_mapping *mapping, 289 unsigned num_mappings, 290 enum pipe_texture_target target, 291 unsigned bind_flags) 292{ 293 struct pipe_screen *screen = st->pipe->screen; 294 GLboolean *extensions = (GLboolean *) &st->ctx->Extensions; 295 int i, j; 296 int num_formats = Elements(mapping->format); 297 int num_ext = Elements(mapping->extension_offset); 298 299 for (i = 0; i < num_mappings; i++) { 300 int num_supported = 0; 301 302 /* Examine each format in the list. */ 303 for (j = 0; j < num_formats && mapping[i].format[j]; j++) { 304 if (screen->is_format_supported(screen, mapping[i].format[j], 305 target, 0, bind_flags)) { 306 num_supported++; 307 } 308 } 309 310 if (!num_supported || 311 (!mapping[i].need_at_least_one && num_supported != j)) { 312 continue; 313 } 314 315 /* Enable all extensions in the list. */ 316 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++) 317 extensions[mapping[i].extension_offset[j]] = GL_TRUE; 318 } 319} 320 321/** 322 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine 323 * which GL extensions are supported. 324 * Quite a few extensions are always supported because they are standard 325 * features or can be built on top of other gallium features. 326 * Some fine tuning may still be needed. 327 */ 328void st_init_extensions(struct st_context *st) 329{ 330 struct pipe_screen *screen = st->pipe->screen; 331 struct gl_context *ctx = st->ctx; 332 int i, glsl_feature_level; 333 GLboolean *extensions = (GLboolean *) &ctx->Extensions; 334 335 static const struct st_extension_cap_mapping cap_mapping[] = { 336 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE }, 337 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP }, 338 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC }, 339 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID }, 340 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, 341 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR }, 342 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY }, 343 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY }, 344 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE }, 345 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP }, 346 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT }, 347 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 }, 348 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, 349 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES }, 350 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME }, 351 352 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE }, 353 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE }, 354 { o(EXT_shadow_funcs), PIPE_CAP_TEXTURE_SHADOW_MAP }, 355 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL }, 356 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, 357 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER }, 358 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, 359 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE }, 360 { o(EXT_timer_query), PIPE_CAP_TIMER_QUERY }, 361 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS }, 362 363 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE }, 364 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL }, 365 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, 366 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER }, 367 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER }, 368 /* GL_NV_point_sprite is not supported by gallium because we don't 369 * support the GL_POINT_SPRITE_R_MODE_NV option. */ 370 { o(MESA_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, 371 }; 372 373 /* Required: render target and sampler support */ 374 static const struct st_extension_format_mapping rendertarget_mapping[] = { 375 { { o(ARB_texture_float) }, 376 { PIPE_FORMAT_R32G32B32A32_FLOAT, 377 PIPE_FORMAT_R16G16B16A16_FLOAT } }, 378 379 { { o(ARB_texture_rgb10_a2ui) }, 380 { PIPE_FORMAT_B10G10R10A2_UINT } }, 381 382 { { o(EXT_framebuffer_sRGB) }, 383 { PIPE_FORMAT_A8B8G8R8_SRGB, 384 PIPE_FORMAT_B8G8R8A8_SRGB }, 385 GL_TRUE }, /* at least one format must be supported */ 386 387 { { o(EXT_packed_float) }, 388 { PIPE_FORMAT_R11G11B10_FLOAT } }, 389 390 { { o(EXT_texture_integer) }, 391 { PIPE_FORMAT_R32G32B32A32_UINT, 392 PIPE_FORMAT_R32G32B32A32_SINT } }, 393 }; 394 395 /* Required: depth stencil and sampler support */ 396 static const struct st_extension_format_mapping depthstencil_mapping[] = { 397 { { o(ARB_depth_buffer_float) }, 398 { PIPE_FORMAT_Z32_FLOAT, 399 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } }, 400 401 { { o(ARB_framebuffer_object), 402 o(EXT_packed_depth_stencil) }, 403 { PIPE_FORMAT_S8_UINT_Z24_UNORM, 404 PIPE_FORMAT_Z24_UNORM_S8_UINT }, 405 GL_TRUE }, /* at least one format must be supported */ 406 }; 407 408 /* Required: sampler support */ 409 static const struct st_extension_format_mapping texture_mapping[] = { 410 { { o(ARB_texture_compression_rgtc) }, 411 { PIPE_FORMAT_RGTC1_UNORM, 412 PIPE_FORMAT_RGTC1_SNORM, 413 PIPE_FORMAT_RGTC2_UNORM, 414 PIPE_FORMAT_RGTC2_SNORM } }, 415 416 { { o(ARB_texture_rg) }, 417 { PIPE_FORMAT_R8G8_UNORM } }, 418 419 { { o(EXT_texture_compression_latc) }, 420 { PIPE_FORMAT_LATC1_UNORM, 421 PIPE_FORMAT_LATC1_SNORM, 422 PIPE_FORMAT_LATC2_UNORM, 423 PIPE_FORMAT_LATC2_SNORM } }, 424 425 { { o(EXT_texture_compression_s3tc), 426 o(S3_s3tc) }, 427 { PIPE_FORMAT_DXT1_RGB, 428 PIPE_FORMAT_DXT1_RGBA, 429 PIPE_FORMAT_DXT3_RGBA, 430 PIPE_FORMAT_DXT5_RGBA } }, 431 432 { { o(EXT_texture_shared_exponent) }, 433 { PIPE_FORMAT_R9G9B9E5_FLOAT } }, 434 435 { { o(EXT_texture_snorm) }, 436 { PIPE_FORMAT_R8G8B8A8_SNORM } }, 437 438 { { o(EXT_texture_sRGB), 439 o(EXT_texture_sRGB_decode) }, 440 { PIPE_FORMAT_A8B8G8R8_SRGB, 441 PIPE_FORMAT_B8G8R8A8_SRGB }, 442 GL_TRUE }, /* at least one format must be supported */ 443 444 { { o(ATI_texture_compression_3dc) }, 445 { PIPE_FORMAT_LATC2_UNORM } }, 446 447 { { o(MESA_ycbcr_texture) }, 448 { PIPE_FORMAT_UYVY, 449 PIPE_FORMAT_YUYV }, 450 GL_TRUE }, /* at least one format must be supported */ 451 452 { { o(OES_compressed_ETC1_RGB8_texture) }, 453 { PIPE_FORMAT_ETC1_RGB8 } }, 454 }; 455 456 /* Required: vertex fetch support. */ 457 static const struct st_extension_format_mapping vertex_mapping[] = { 458 { { o(ARB_ES2_compatibility) }, 459 { PIPE_FORMAT_R32G32B32A32_FIXED } }, 460 461 { { o(ARB_half_float_vertex) }, 462 { PIPE_FORMAT_R16G16B16A16_FLOAT } }, 463 464 { { o(ARB_vertex_type_2_10_10_10_rev) }, 465 { PIPE_FORMAT_R10G10B10A2_UNORM, 466 PIPE_FORMAT_B10G10R10A2_UNORM, 467 PIPE_FORMAT_R10G10B10A2_SNORM, 468 PIPE_FORMAT_B10G10R10A2_SNORM, 469 PIPE_FORMAT_R10G10B10A2_USCALED, 470 PIPE_FORMAT_B10G10R10A2_USCALED, 471 PIPE_FORMAT_R10G10B10A2_SSCALED, 472 PIPE_FORMAT_B10G10R10A2_SSCALED } }, 473 }; 474 475 /* 476 * Extensions that are supported by all Gallium drivers: 477 */ 478 ctx->Extensions.ARB_copy_buffer = GL_TRUE; 479 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; 480 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; 481 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; 482 ctx->Extensions.ARB_fragment_program = GL_TRUE; 483 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 484 ctx->Extensions.ARB_half_float_pixel = GL_TRUE; 485 ctx->Extensions.ARB_map_buffer_range = GL_TRUE; 486 ctx->Extensions.ARB_sampler_objects = GL_TRUE; 487 ctx->Extensions.ARB_shader_objects = GL_TRUE; 488 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 489 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */ 490 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 491 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 492 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 493 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 494 ctx->Extensions.ARB_texture_storage = GL_TRUE; 495 ctx->Extensions.ARB_vertex_array_object = GL_TRUE; 496 ctx->Extensions.ARB_vertex_program = GL_TRUE; 497 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 498 ctx->Extensions.ARB_window_pos = GL_TRUE; 499 500 ctx->Extensions.EXT_blend_color = GL_TRUE; 501 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 502 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 503 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; 504 ctx->Extensions.EXT_framebuffer_object = GL_TRUE; 505 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; 506 ctx->Extensions.EXT_fog_coord = GL_TRUE; 507 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; 508 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 509 ctx->Extensions.EXT_point_parameters = GL_TRUE; 510 ctx->Extensions.EXT_provoking_vertex = GL_TRUE; 511 ctx->Extensions.EXT_secondary_color = GL_TRUE; 512 ctx->Extensions.EXT_separate_shader_objects = GL_TRUE; 513 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; 514 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; 515 516 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; 517 518 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; 519 520 ctx->Extensions.MESA_pack_invert = GL_TRUE; 521 522 ctx->Extensions.NV_blend_square = GL_TRUE; 523 ctx->Extensions.NV_fog_distance = GL_TRUE; 524 ctx->Extensions.NV_texgen_reflection = GL_TRUE; 525 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; 526 ctx->Extensions.NV_texture_rectangle = GL_TRUE; 527#if 0 528 /* possibly could support the following two */ 529 ctx->Extensions.NV_vertex_program = GL_TRUE; 530 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; 531#endif 532 533#if FEATURE_OES_EGL_image 534 ctx->Extensions.OES_EGL_image = GL_TRUE; 535 if (ctx->API != API_OPENGL) 536 ctx->Extensions.OES_EGL_image_external = GL_TRUE; 537#endif 538#if FEATURE_OES_draw_texture 539 ctx->Extensions.OES_draw_texture = GL_TRUE; 540#endif 541 542 /* Expose the extensions which directly correspond to gallium caps. */ 543 for (i = 0; i < Elements(cap_mapping); i++) { 544 if (screen->get_param(screen, cap_mapping[i].cap)) { 545 extensions[cap_mapping[i].extension_offset] = GL_TRUE; 546 } 547 } 548 549 /* Expose the extensions which directly correspond to gallium formats. */ 550 init_format_extensions(st, rendertarget_mapping, 551 Elements(rendertarget_mapping), PIPE_TEXTURE_2D, 552 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW); 553 init_format_extensions(st, depthstencil_mapping, 554 Elements(depthstencil_mapping), PIPE_TEXTURE_2D, 555 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW); 556 init_format_extensions(st, texture_mapping, Elements(texture_mapping), 557 PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW); 558 init_format_extensions(st, vertex_mapping, Elements(vertex_mapping), 559 PIPE_BUFFER, PIPE_BIND_VERTEX_BUFFER); 560 561 /* Figure out GLSL support. */ 562 glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL); 563 564 if (glsl_feature_level >= 130) { 565 ctx->Const.GLSLVersion = 130; 566 } else { 567 ctx->Const.GLSLVersion = 120; 568 } 569 570 _mesa_override_glsl_version(st->ctx); 571 572 if (ctx->Const.GLSLVersion >= 130) { 573 ctx->Const.NativeIntegers = GL_TRUE; 574 ctx->Const.MaxClipPlanes = 8; 575 576 /* Extensions that only depend on GLSL 1.3. */ 577 ctx->Extensions.ARB_conservative_depth = GL_TRUE; 578 } else { 579 /* Optional integer support for GLSL 1.2. */ 580 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX, 581 PIPE_SHADER_CAP_INTEGERS) && 582 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 583 PIPE_SHADER_CAP_INTEGERS)) { 584 ctx->Const.NativeIntegers = GL_TRUE; 585 } 586 } 587 588 /* Below are the cases which cannot be moved into tables easily. */ 589 590 if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) { 591 ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE; 592 ctx->Extensions.S3_s3tc = GL_FALSE; 593 } 594 595 if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, 596 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) { 597#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */ 598 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE; 599#endif 600 } 601 602 ctx->Extensions.NV_primitive_restart = GL_TRUE; 603 if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) { 604 st->sw_primitive_restart = GL_TRUE; 605 } 606 607 if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) { 608 ctx->Extensions.ARB_color_buffer_float = GL_TRUE; 609 610 if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) { 611 st->clamp_vert_color_in_shader = TRUE; 612 } 613 614 if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) { 615 st->clamp_frag_color_in_shader = TRUE; 616 } 617 } 618 619 if (screen->fence_finish) { 620 ctx->Extensions.ARB_sync = GL_TRUE; 621 } 622 623 /* Maximum sample count. */ 624 for (i = 16; i > 0; --i) { 625 if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM, 626 PIPE_TEXTURE_2D, i, 627 PIPE_BIND_RENDER_TARGET)) { 628 ctx->Const.MaxSamples = i; 629 break; 630 } 631 } 632} 633