version.c revision 7ec681f3
1/* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 2010 VMware, Inc. All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26#include <stdio.h> 27#include "context.h" 28#include "draw_validate.h" 29 30#include "util/os_misc.h" 31#include "util/simple_mtx.h" 32 33#include "mtypes.h" 34#include "version.h" 35#include "git_sha1.h" 36 37static simple_mtx_t override_lock = _SIMPLE_MTX_INITIALIZER_NP; 38 39/** 40 * Scans 'string' to see if it ends with 'ending'. 41 */ 42static bool 43check_for_ending(const char *string, const char *ending) 44{ 45 const size_t len1 = strlen(string); 46 const size_t len2 = strlen(ending); 47 48 if (len2 > len1) 49 return false; 50 51 return strcmp(string + (len1 - len2), ending) == 0; 52} 53 54/** 55 * Returns the gl override data 56 * 57 * version > 0 indicates there is an override requested 58 * fwd_context is only valid if version > 0 59 */ 60static void 61get_gl_override(gl_api api, int *version, bool *fwd_context, 62 bool *compat_context) 63{ 64 const char *env_var = (api == API_OPENGL_CORE || api == API_OPENGL_COMPAT) 65 ? "MESA_GL_VERSION_OVERRIDE" : "MESA_GLES_VERSION_OVERRIDE"; 66 const char *version_str; 67 int major, minor, n; 68 static struct override_info { 69 int version; 70 bool fc_suffix; 71 bool compat_suffix; 72 } override[] = { 73 [API_OPENGL_COMPAT] = { -1, false, false}, 74 [API_OPENGLES] = { -1, false, false}, 75 [API_OPENGLES2] = { -1, false, false}, 76 [API_OPENGL_CORE] = { -1, false, false}, 77 }; 78 79 STATIC_ASSERT(ARRAY_SIZE(override) == API_OPENGL_LAST + 1); 80 81 simple_mtx_lock(&override_lock); 82 83 if (api == API_OPENGLES) 84 goto exit; 85 86 if (override[api].version < 0) { 87 override[api].version = 0; 88 89 version_str = os_get_option(env_var); 90 if (version_str) { 91 override[api].fc_suffix = check_for_ending(version_str, "FC"); 92 override[api].compat_suffix = check_for_ending(version_str, "COMPAT"); 93 94 n = sscanf(version_str, "%u.%u", &major, &minor); 95 if (n != 2) { 96 fprintf(stderr, "error: invalid value for %s: %s\n", 97 env_var, version_str); 98 override[api].version = 0; 99 } else { 100 override[api].version = major * 10 + minor; 101 102 /* There is no such thing as compatibility or forward-compatible for 103 * OpenGL ES 2.0 or 3.x APIs. 104 */ 105 if ((override[api].version < 30 && override[api].fc_suffix) || 106 (api == API_OPENGLES2 && (override[api].fc_suffix || 107 override[api].compat_suffix))) { 108 fprintf(stderr, "error: invalid value for %s: %s\n", 109 env_var, version_str); 110 } 111 } 112 } 113 } 114 115exit: 116 *version = override[api].version; 117 *fwd_context = override[api].fc_suffix; 118 *compat_context = override[api].compat_suffix; 119 120 simple_mtx_unlock(&override_lock); 121} 122 123/** 124 * Builds the Mesa version string. 125 */ 126static void 127create_version_string(struct gl_context *ctx, const char *prefix) 128{ 129 static const int max = 100; 130 131 ctx->VersionString = malloc(max); 132 if (ctx->VersionString) { 133 snprintf(ctx->VersionString, max, 134 "%s%u.%u%s Mesa " PACKAGE_VERSION MESA_GIT_SHA1, 135 prefix, 136 ctx->Version / 10, ctx->Version % 10, 137 (ctx->API == API_OPENGL_CORE) ? " (Core Profile)" : 138 (ctx->API == API_OPENGL_COMPAT && ctx->Version >= 32) ? 139 " (Compatibility Profile)" : "" 140 ); 141 } 142} 143 144/** 145 * Override the context's version and/or API type if the environment variables 146 * MESA_GL_VERSION_OVERRIDE or MESA_GLES_VERSION_OVERRIDE are set. 147 * 148 * Example uses of MESA_GL_VERSION_OVERRIDE: 149 * 150 * 2.1: select a compatibility (non-Core) profile with GL version 2.1. 151 * 3.0: select a compatibility (non-Core) profile with GL version 3.0. 152 * 3.0FC: select a Core+Forward Compatible profile with GL version 3.0. 153 * 3.1: select GL version 3.1 with GL_ARB_compatibility enabled per the driver default. 154 * 3.1FC: select GL version 3.1 with forward compatibility and GL_ARB_compatibility disabled. 155 * 3.1COMPAT: select GL version 3.1 with GL_ARB_compatibility enabled. 156 * X.Y: override GL version to X.Y without changing the profile. 157 * X.YFC: select a Core+Forward Compatible profile with GL version X.Y. 158 * X.YCOMPAT: select a Compatibility profile with GL version X.Y. 159 * 160 * Example uses of MESA_GLES_VERSION_OVERRIDE: 161 * 162 * 2.0: select GLES version 2.0. 163 * 3.0: select GLES version 3.0. 164 * 3.1: select GLES version 3.1. 165 */ 166bool 167_mesa_override_gl_version_contextless(struct gl_constants *consts, 168 gl_api *apiOut, GLuint *versionOut) 169{ 170 int version; 171 bool fwd_context, compat_context; 172 173 get_gl_override(*apiOut, &version, &fwd_context, &compat_context); 174 175 if (version > 0) { 176 *versionOut = version; 177 178 /* Modify the API and context flags as needed. */ 179 if (*apiOut == API_OPENGL_CORE || *apiOut == API_OPENGL_COMPAT) { 180 if (version >= 30 && fwd_context) { 181 *apiOut = API_OPENGL_CORE; 182 consts->ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT; 183 } else if (compat_context) { 184 *apiOut = API_OPENGL_COMPAT; 185 } 186 } 187 188 return true; 189 } 190 return false; 191} 192 193void 194_mesa_override_gl_version(struct gl_context *ctx) 195{ 196 if (_mesa_override_gl_version_contextless(&ctx->Const, &ctx->API, 197 &ctx->Version)) { 198 /* We need to include API in version string for OpenGL ES, otherwise 199 * application can not detect GLES via glGetString(GL_VERSION) query. 200 * 201 * From OpenGL ES 3.2 spec, Page 436: 202 * 203 * "The VERSION string is laid out as follows: 204 * 205 * OpenGL ES N.M vendor-specific information" 206 * 207 * From OpenGL 4.5 spec, Page 538: 208 * 209 * "The VERSION and SHADING_LANGUAGE_VERSION strings are laid out as 210 * follows: 211 * 212 * <version number><space><vendor-specific information>" 213 */ 214 create_version_string(ctx, _mesa_is_gles(ctx) ? "OpenGL ES " : ""); 215 ctx->Extensions.Version = ctx->Version; 216 } 217} 218 219/** 220 * Override the context's GLSL version if the environment variable 221 * MESA_GLSL_VERSION_OVERRIDE is set. Valid values for 222 * MESA_GLSL_VERSION_OVERRIDE are integers, such as "130". 223 */ 224void 225_mesa_override_glsl_version(struct gl_constants *consts) 226{ 227 const char *env_var = "MESA_GLSL_VERSION_OVERRIDE"; 228 const char *version; 229 int n; 230 231 version = getenv(env_var); 232 if (!version) { 233 return; 234 } 235 236 n = sscanf(version, "%u", &consts->GLSLVersion); 237 if (n != 1) { 238 fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version); 239 return; 240 } 241} 242 243/** 244 * Examine enabled GL extensions to determine GL version. 245 */ 246static GLuint 247compute_version(const struct gl_extensions *extensions, 248 const struct gl_constants *consts, gl_api api) 249{ 250 GLuint major, minor, version; 251 252 const bool ver_1_3 = (extensions->ARB_texture_border_clamp && 253 extensions->ARB_texture_cube_map && 254 extensions->ARB_texture_env_combine && 255 extensions->ARB_texture_env_dot3); 256 const bool ver_1_4 = (ver_1_3 && 257 extensions->ARB_depth_texture && 258 extensions->ARB_shadow && 259 extensions->ARB_texture_env_crossbar && 260 extensions->EXT_blend_color && 261 extensions->EXT_blend_func_separate && 262 extensions->EXT_blend_minmax && 263 extensions->EXT_point_parameters); 264 const bool ver_1_5 = (ver_1_4 && 265 extensions->ARB_occlusion_query); 266 const bool ver_2_0 = (ver_1_5 && 267 extensions->ARB_point_sprite && 268 extensions->ARB_vertex_shader && 269 extensions->ARB_fragment_shader && 270 extensions->ARB_texture_non_power_of_two && 271 extensions->EXT_blend_equation_separate && 272 extensions->EXT_stencil_two_side); 273 const bool ver_2_1 = (ver_2_0 && 274 extensions->EXT_pixel_buffer_object && 275 extensions->EXT_texture_sRGB); 276 /* We lie about the minimum number of color attachments. Strictly, OpenGL 277 * 3.0 requires 8, whereas OpenGL ES requires 4. OpenGL ES 3.0 class 278 * hardware may only support 4 render targets. Advertise non-conformant 279 * OpenGL 3.0 anyway. Affects freedreno on a3xx 280 */ 281 const bool ver_3_0 = (ver_2_1 && 282 consts->GLSLVersion >= 130 && 283 consts->MaxColorAttachments >= 4 && 284 (consts->MaxSamples >= 4 || consts->FakeSWMSAA) && 285 (api == API_OPENGL_CORE || 286 extensions->ARB_color_buffer_float) && 287 extensions->ARB_depth_buffer_float && 288 extensions->ARB_half_float_vertex && 289 extensions->ARB_map_buffer_range && 290 extensions->ARB_shader_texture_lod && 291 extensions->ARB_texture_float && 292 extensions->ARB_texture_rg && 293 extensions->ARB_texture_compression_rgtc && 294 extensions->EXT_draw_buffers2 && 295 extensions->ARB_framebuffer_object && 296 extensions->EXT_framebuffer_sRGB && 297 extensions->EXT_packed_float && 298 extensions->EXT_texture_array && 299 extensions->EXT_texture_shared_exponent && 300 extensions->EXT_transform_feedback && 301 extensions->NV_conditional_render); 302 const bool ver_3_1 = (ver_3_0 && 303 consts->GLSLVersion >= 140 && 304 extensions->ARB_draw_instanced && 305 extensions->ARB_texture_buffer_object && 306 extensions->ARB_uniform_buffer_object && 307 extensions->EXT_texture_snorm && 308 extensions->NV_primitive_restart && 309 extensions->NV_texture_rectangle && 310 consts->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits >= 16); 311 const bool ver_3_2 = (ver_3_1 && 312 consts->GLSLVersion >= 150 && 313 extensions->ARB_depth_clamp && 314 extensions->ARB_draw_elements_base_vertex && 315 extensions->ARB_fragment_coord_conventions && 316 extensions->EXT_provoking_vertex && 317 extensions->ARB_seamless_cube_map && 318 extensions->ARB_sync && 319 extensions->ARB_texture_multisample && 320 extensions->EXT_vertex_array_bgra); 321 const bool ver_3_3 = (ver_3_2 && 322 consts->GLSLVersion >= 330 && 323 extensions->ARB_blend_func_extended && 324 extensions->ARB_explicit_attrib_location && 325 extensions->ARB_instanced_arrays && 326 extensions->ARB_occlusion_query2 && 327 extensions->ARB_shader_bit_encoding && 328 extensions->ARB_texture_rgb10_a2ui && 329 extensions->ARB_timer_query && 330 extensions->ARB_vertex_type_2_10_10_10_rev && 331 extensions->EXT_texture_swizzle); 332 /* ARB_sampler_objects is always enabled in mesa */ 333 334 const bool ver_4_0 = (ver_3_3 && 335 consts->GLSLVersion >= 400 && 336 extensions->ARB_draw_buffers_blend && 337 extensions->ARB_draw_indirect && 338 extensions->ARB_gpu_shader5 && 339 extensions->ARB_gpu_shader_fp64 && 340 extensions->ARB_sample_shading && 341 extensions->ARB_tessellation_shader && 342 extensions->ARB_texture_buffer_object_rgb32 && 343 extensions->ARB_texture_cube_map_array && 344 extensions->ARB_texture_query_lod && 345 extensions->ARB_transform_feedback2 && 346 extensions->ARB_transform_feedback3); 347 const bool ver_4_1 = (ver_4_0 && 348 consts->GLSLVersion >= 410 && 349 consts->MaxTextureSize >= 16384 && 350 consts->MaxRenderbufferSize >= 16384 && 351 extensions->ARB_ES2_compatibility && 352 extensions->ARB_shader_precision && 353 extensions->ARB_vertex_attrib_64bit && 354 extensions->ARB_viewport_array); 355 const bool ver_4_2 = (ver_4_1 && 356 consts->GLSLVersion >= 420 && 357 extensions->ARB_base_instance && 358 extensions->ARB_conservative_depth && 359 extensions->ARB_internalformat_query && 360 extensions->ARB_shader_atomic_counters && 361 extensions->ARB_shader_image_load_store && 362 extensions->ARB_shading_language_420pack && 363 extensions->ARB_shading_language_packing && 364 extensions->ARB_texture_compression_bptc && 365 extensions->ARB_transform_feedback_instanced); 366 const bool ver_4_3 = (ver_4_2 && 367 consts->GLSLVersion >= 430 && 368 consts->Program[MESA_SHADER_VERTEX].MaxUniformBlocks >= 14 && 369 extensions->ARB_ES3_compatibility && 370 extensions->ARB_arrays_of_arrays && 371 extensions->ARB_compute_shader && 372 extensions->ARB_copy_image && 373 extensions->ARB_explicit_uniform_location && 374 extensions->ARB_fragment_layer_viewport && 375 extensions->ARB_framebuffer_no_attachments && 376 extensions->ARB_internalformat_query2 && 377 extensions->ARB_robust_buffer_access_behavior && 378 extensions->ARB_shader_image_size && 379 extensions->ARB_shader_storage_buffer_object && 380 extensions->ARB_stencil_texturing && 381 extensions->ARB_texture_buffer_range && 382 extensions->ARB_texture_query_levels && 383 extensions->ARB_texture_view); 384 const bool ver_4_4 = (ver_4_3 && 385 consts->GLSLVersion >= 440 && 386 consts->MaxVertexAttribStride >= 2048 && 387 extensions->ARB_buffer_storage && 388 extensions->ARB_clear_texture && 389 extensions->ARB_enhanced_layouts && 390 extensions->ARB_query_buffer_object && 391 extensions->ARB_texture_mirror_clamp_to_edge && 392 extensions->ARB_texture_stencil8 && 393 extensions->ARB_vertex_type_10f_11f_11f_rev); 394 const bool ver_4_5 = (ver_4_4 && 395 consts->GLSLVersion >= 450 && 396 extensions->ARB_ES3_1_compatibility && 397 extensions->ARB_clip_control && 398 extensions->ARB_conditional_render_inverted && 399 extensions->ARB_cull_distance && 400 extensions->ARB_derivative_control && 401 extensions->ARB_shader_texture_image_samples && 402 extensions->NV_texture_barrier); 403 const bool ver_4_6 = (ver_4_5 && 404 consts->GLSLVersion >= 460 && 405 extensions->ARB_gl_spirv && 406 extensions->ARB_spirv_extensions && 407 extensions->ARB_indirect_parameters && 408 extensions->ARB_pipeline_statistics_query && 409 extensions->ARB_polygon_offset_clamp && 410 extensions->ARB_shader_atomic_counter_ops && 411 extensions->ARB_shader_draw_parameters && 412 extensions->ARB_shader_group_vote && 413 extensions->ARB_texture_filter_anisotropic && 414 extensions->ARB_transform_feedback_overflow_query); 415 416 if (ver_4_6) { 417 major = 4; 418 minor = 6; 419 } 420 else if (ver_4_5) { 421 major = 4; 422 minor = 5; 423 } 424 else if (ver_4_4) { 425 major = 4; 426 minor = 4; 427 } 428 else if (ver_4_3) { 429 major = 4; 430 minor = 3; 431 } 432 else if (ver_4_2) { 433 major = 4; 434 minor = 2; 435 } 436 else if (ver_4_1) { 437 major = 4; 438 minor = 1; 439 } 440 else if (ver_4_0) { 441 major = 4; 442 minor = 0; 443 } 444 else if (ver_3_3) { 445 major = 3; 446 minor = 3; 447 } 448 else if (ver_3_2) { 449 major = 3; 450 minor = 2; 451 } 452 else if (ver_3_1) { 453 major = 3; 454 minor = 1; 455 } 456 else if (ver_3_0) { 457 major = 3; 458 minor = 0; 459 } 460 else if (ver_2_1) { 461 major = 2; 462 minor = 1; 463 } 464 else if (ver_2_0) { 465 major = 2; 466 minor = 0; 467 } 468 else if (ver_1_5) { 469 major = 1; 470 minor = 5; 471 } 472 else if (ver_1_4) { 473 major = 1; 474 minor = 4; 475 } 476 else if (ver_1_3) { 477 major = 1; 478 minor = 3; 479 } 480 else { 481 major = 1; 482 minor = 2; 483 } 484 485 version = major * 10 + minor; 486 487 if (api == API_OPENGL_CORE && version < 31) 488 return 0; 489 490 return version; 491} 492 493static GLuint 494compute_version_es1(const struct gl_extensions *extensions) 495{ 496 /* OpenGL ES 1.0 is derived from OpenGL 1.3 */ 497 const bool ver_1_0 = (extensions->ARB_texture_env_combine && 498 extensions->ARB_texture_env_dot3); 499 /* OpenGL ES 1.1 is derived from OpenGL 1.5 */ 500 const bool ver_1_1 = (ver_1_0 && 501 extensions->EXT_point_parameters); 502 503 if (ver_1_1) { 504 return 11; 505 } else if (ver_1_0) { 506 return 10; 507 } else { 508 return 0; 509 } 510} 511 512static GLuint 513compute_version_es2(const struct gl_extensions *extensions, 514 const struct gl_constants *consts) 515{ 516 /* OpenGL ES 2.0 is derived from OpenGL 2.0 */ 517 const bool ver_2_0 = (extensions->ARB_texture_cube_map && 518 extensions->EXT_blend_color && 519 extensions->EXT_blend_func_separate && 520 extensions->EXT_blend_minmax && 521 extensions->ARB_vertex_shader && 522 extensions->ARB_fragment_shader && 523 extensions->ARB_texture_non_power_of_two && 524 extensions->EXT_blend_equation_separate); 525 /* FINISHME: This list isn't quite right. */ 526 const bool ver_3_0 = (extensions->ARB_half_float_vertex && 527 extensions->ARB_internalformat_query && 528 extensions->ARB_map_buffer_range && 529 extensions->ARB_shader_texture_lod && 530 extensions->OES_texture_float && 531 extensions->OES_texture_half_float && 532 extensions->OES_texture_half_float_linear && 533 extensions->ARB_texture_rg && 534 extensions->ARB_depth_buffer_float && 535 extensions->ARB_framebuffer_object && 536 extensions->EXT_sRGB && 537 extensions->EXT_packed_float && 538 extensions->EXT_texture_array && 539 extensions->EXT_texture_shared_exponent && 540 extensions->EXT_texture_sRGB && 541 extensions->EXT_transform_feedback && 542 extensions->ARB_draw_instanced && 543 extensions->ARB_uniform_buffer_object && 544 extensions->EXT_texture_snorm && 545 (extensions->NV_primitive_restart || 546 consts->PrimitiveRestartFixedIndex) && 547 extensions->OES_depth_texture_cube_map && 548 extensions->EXT_texture_type_2_10_10_10_REV && 549 consts->MaxColorAttachments >= 4); 550 const bool es31_compute_shader = 551 consts->MaxComputeWorkGroupInvocations >= 128 && 552 consts->Program[MESA_SHADER_COMPUTE].MaxShaderStorageBlocks && 553 consts->Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers && 554 consts->Program[MESA_SHADER_COMPUTE].MaxImageUniforms; 555 const bool ver_3_1 = (ver_3_0 && 556 consts->MaxVertexAttribStride >= 2048 && 557 extensions->ARB_arrays_of_arrays && 558 es31_compute_shader && 559 extensions->ARB_draw_indirect && 560 extensions->ARB_explicit_uniform_location && 561 extensions->ARB_framebuffer_no_attachments && 562 extensions->ARB_shading_language_packing && 563 extensions->ARB_stencil_texturing && 564 extensions->ARB_texture_multisample && 565 extensions->ARB_texture_gather && 566 extensions->MESA_shader_integer_functions && 567 extensions->EXT_shader_integer_mix); 568 const bool ver_3_2 = (ver_3_1 && 569 /* ES 3.2 requires that images/buffers be accessible 570 * from fragment shaders as well 571 */ 572 extensions->ARB_shader_atomic_counters && 573 extensions->ARB_shader_image_load_store && 574 extensions->ARB_shader_image_size && 575 extensions->ARB_shader_storage_buffer_object && 576 577 extensions->EXT_draw_buffers2 && 578 extensions->KHR_blend_equation_advanced && 579 extensions->KHR_robustness && 580 extensions->KHR_texture_compression_astc_ldr && 581 extensions->OES_copy_image && 582 extensions->ARB_draw_buffers_blend && 583 extensions->ARB_draw_elements_base_vertex && 584 extensions->OES_geometry_shader && 585 extensions->OES_primitive_bounding_box && 586 extensions->OES_sample_variables && 587 extensions->ARB_tessellation_shader && 588 extensions->ARB_texture_border_clamp && 589 extensions->OES_texture_buffer && 590 extensions->OES_texture_cube_map_array && 591 extensions->ARB_texture_stencil8); 592 593 if (ver_3_2) { 594 return 32; 595 } else if (ver_3_1) { 596 return 31; 597 } else if (ver_3_0) { 598 return 30; 599 } else if (ver_2_0) { 600 return 20; 601 } else { 602 return 0; 603 } 604} 605 606GLuint 607_mesa_get_version(const struct gl_extensions *extensions, 608 struct gl_constants *consts, gl_api api) 609{ 610 switch (api) { 611 case API_OPENGL_COMPAT: 612 /* Disable higher GLSL versions for legacy contexts. 613 * This disallows creation of higher compatibility contexts. */ 614 if (!consts->AllowHigherCompatVersion) { 615 consts->GLSLVersion = consts->GLSLVersionCompat; 616 } 617 FALLTHROUGH; 618 case API_OPENGL_CORE: 619 return compute_version(extensions, consts, api); 620 case API_OPENGLES: 621 return compute_version_es1(extensions); 622 case API_OPENGLES2: 623 return compute_version_es2(extensions, consts); 624 } 625 return 0; 626} 627 628/** 629 * Set the context's Version and VersionString fields. 630 * This should only be called once as part of context initialization 631 * or to perform version check for GLX_ARB_create_context_profile. 632 */ 633void 634_mesa_compute_version(struct gl_context *ctx) 635{ 636 if (ctx->Version) 637 goto done; 638 639 ctx->Version = _mesa_get_version(&ctx->Extensions, &ctx->Const, ctx->API); 640 ctx->Extensions.Version = ctx->Version; 641 642 /* Make sure that the GLSL version lines up with the GL version. In some 643 * cases it can be too high, e.g. if an extension is missing. 644 */ 645 if (_mesa_is_desktop_gl(ctx)) { 646 switch (ctx->Version) { 647 case 20: 648 FALLTHROUGH; /* GLSL 1.20 is the minimum we support */ 649 case 21: 650 ctx->Const.GLSLVersion = 120; 651 break; 652 case 30: 653 ctx->Const.GLSLVersion = 130; 654 break; 655 case 31: 656 ctx->Const.GLSLVersion = 140; 657 break; 658 case 32: 659 ctx->Const.GLSLVersion = 150; 660 break; 661 default: 662 if (ctx->Version >= 33) 663 ctx->Const.GLSLVersion = ctx->Version * 10; 664 break; 665 } 666 } 667 668 switch (ctx->API) { 669 case API_OPENGL_COMPAT: 670 case API_OPENGL_CORE: 671 create_version_string(ctx, ""); 672 break; 673 674 case API_OPENGLES: 675 if (!ctx->Version) { 676 _mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support."); 677 return; 678 } 679 create_version_string(ctx, "OpenGL ES-CM "); 680 break; 681 682 case API_OPENGLES2: 683 if (!ctx->Version) { 684 _mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support."); 685 return; 686 } 687 create_version_string(ctx, "OpenGL ES "); 688 break; 689 } 690 691done: 692 if (ctx->API == API_OPENGL_COMPAT && ctx->Version >= 31) 693 ctx->Extensions.ARB_compatibility = GL_TRUE; 694 695 /* Precompute valid primitive types for faster draw time validation. */ 696 /* All primitive type enums are less than 32, so we can use the shift. */ 697 ctx->SupportedPrimMask = (1 << GL_POINTS) | 698 (1 << GL_LINES) | 699 (1 << GL_LINE_LOOP) | 700 (1 << GL_LINE_STRIP) | 701 (1 << GL_TRIANGLES) | 702 (1 << GL_TRIANGLE_STRIP) | 703 (1 << GL_TRIANGLE_FAN); 704 705 if (ctx->API == API_OPENGL_COMPAT) { 706 ctx->SupportedPrimMask |= (1 << GL_QUADS) | 707 (1 << GL_QUAD_STRIP) | 708 (1 << GL_POLYGON); 709 } 710 711 if (_mesa_has_geometry_shaders(ctx)) { 712 ctx->SupportedPrimMask |= (1 << GL_LINES_ADJACENCY) | 713 (1 << GL_LINE_STRIP_ADJACENCY) | 714 (1 << GL_TRIANGLES_ADJACENCY) | 715 (1 << GL_TRIANGLE_STRIP_ADJACENCY); 716 } 717 718 if (_mesa_has_tessellation(ctx)) 719 ctx->SupportedPrimMask |= 1 << GL_PATCHES; 720 721 /* First time initialization. */ 722 _mesa_update_valid_to_render_state(ctx); 723} 724 725 726void 727_mesa_get_driver_uuid(struct gl_context *ctx, GLint *uuid) 728{ 729 ctx->Driver.GetDriverUuid(ctx, (char*) uuid); 730} 731 732void 733_mesa_get_device_uuid(struct gl_context *ctx, GLint *uuid) 734{ 735 ctx->Driver.GetDeviceUuid(ctx, (char*) uuid); 736} 737 738/** 739 * Get the i-th GLSL version string. If index=0, return the most recent 740 * supported version. 741 * \param ctx context to query 742 * \param index which version string to return, or -1 if none 743 * \param versionOut returns the vesrion string 744 * \return total number of shading language versions. 745 */ 746int 747_mesa_get_shading_language_version(const struct gl_context *ctx, 748 int index, 749 char **versionOut) 750{ 751 int n = 0; 752 753#define GLSL_VERSION(S) \ 754 if (n++ == index) \ 755 *versionOut = S 756 757 /* GLSL core */ 758 if (ctx->Const.GLSLVersion >= 460) 759 GLSL_VERSION("460"); 760 if (ctx->Const.GLSLVersion >= 450) 761 GLSL_VERSION("450"); 762 if (ctx->Const.GLSLVersion >= 440) 763 GLSL_VERSION("440"); 764 if (ctx->Const.GLSLVersion >= 430) 765 GLSL_VERSION("430"); 766 if (ctx->Const.GLSLVersion >= 420) 767 GLSL_VERSION("420"); 768 if (ctx->Const.GLSLVersion >= 410) 769 GLSL_VERSION("410"); 770 if (ctx->Const.GLSLVersion >= 400) 771 GLSL_VERSION("400"); 772 if (ctx->Const.GLSLVersion >= 330) 773 GLSL_VERSION("330"); 774 if (ctx->Const.GLSLVersion >= 150) 775 GLSL_VERSION("150"); 776 if (ctx->Const.GLSLVersion >= 140) 777 GLSL_VERSION("140"); 778 if (ctx->Const.GLSLVersion >= 130) 779 GLSL_VERSION("130"); 780 if (ctx->Const.GLSLVersion >= 120) 781 GLSL_VERSION("120"); 782 /* The GL spec says to return the empty string for GLSL 1.10 */ 783 if (ctx->Const.GLSLVersion >= 110) 784 GLSL_VERSION(""); 785 786 /* GLSL es */ 787 if ((ctx->API == API_OPENGLES2 && ctx->Version >= 32) || 788 ctx->Extensions.ARB_ES3_2_compatibility) 789 GLSL_VERSION("320 es"); 790 if (_mesa_is_gles31(ctx) || ctx->Extensions.ARB_ES3_1_compatibility) 791 GLSL_VERSION("310 es"); 792 if (_mesa_is_gles3(ctx) || ctx->Extensions.ARB_ES3_compatibility) 793 GLSL_VERSION("300 es"); 794 if (ctx->API == API_OPENGLES2 || ctx->Extensions.ARB_ES2_compatibility) 795 GLSL_VERSION("100"); 796 797#undef GLSL_VERSION 798 799 return n; 800} 801