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 "imports.h" 29 #include "mtypes.h" 30 #include "version.h" 31 #include "git_sha1.h" 32 33 /** 34 * Scans 'string' to see if it ends with 'ending'. 35 */ 36 static bool 37 check_for_ending(const char *string, const char *ending) 38 { 39 const size_t len1 = strlen(string); 40 const size_t len2 = strlen(ending); 41 42 if (len2 > len1) 43 return false; 44 45 return strcmp(string + (len1 - len2), ending) == 0; 46 } 47 48 /** 49 * Returns the gl override data 50 * 51 * version > 0 indicates there is an override requested 52 * fwd_context is only valid if version > 0 53 */ 54 static void 55 get_gl_override(gl_api api, int *version, bool *fwd_context, 56 bool *compat_context) 57 { 58 const char *env_var = (api == API_OPENGL_CORE || api == API_OPENGL_COMPAT) 59 ? "MESA_GL_VERSION_OVERRIDE" : "MESA_GLES_VERSION_OVERRIDE"; 60 const char *version_str; 61 int major, minor, n; 62 static struct override_info { 63 int version; 64 bool fc_suffix; 65 bool compat_suffix; 66 } override[] = { 67 { -1, false, false}, 68 { -1, false, false}, 69 { -1, false, false}, 70 { -1, false, false}, 71 }; 72 73 STATIC_ASSERT(ARRAY_SIZE(override) == API_OPENGL_LAST + 1); 74 75 if (api == API_OPENGLES) 76 goto exit; 77 78 if (override[api].version < 0) { 79 override[api].version = 0; 80 81 version_str = getenv(env_var); 82 if (version_str) { 83 override[api].fc_suffix = check_for_ending(version_str, "FC"); 84 override[api].compat_suffix = check_for_ending(version_str, "COMPAT"); 85 86 n = sscanf(version_str, "%u.%u", &major, &minor); 87 if (n != 2) { 88 fprintf(stderr, "error: invalid value for %s: %s\n", 89 env_var, version_str); 90 override[api].version = 0; 91 } else { 92 override[api].version = major * 10 + minor; 93 94 /* There is no such thing as compatibility or forward-compatible for 95 * OpenGL ES 2.0 or 3.x APIs. 96 */ 97 if ((override[api].version < 30 && override[api].fc_suffix) || 98 (api == API_OPENGLES2 && (override[api].fc_suffix || 99 override[api].compat_suffix))) { 100 fprintf(stderr, "error: invalid value for %s: %s\n", 101 env_var, version_str); 102 } 103 } 104 } 105 } 106 107 exit: 108 *version = override[api].version; 109 *fwd_context = override[api].fc_suffix; 110 *compat_context = override[api].compat_suffix; 111 } 112 113 /** 114 * Builds the Mesa version string. 115 */ 116 static void 117 create_version_string(struct gl_context *ctx, const char *prefix) 118 { 119 static const int max = 100; 120 121 ctx->VersionString = malloc(max); 122 if (ctx->VersionString) { 123 _mesa_snprintf(ctx->VersionString, max, 124 "%s%u.%u%s Mesa " PACKAGE_VERSION 125 #ifdef MESA_GIT_SHA1 126 " (" MESA_GIT_SHA1 ")" 127 #endif 128 , 129 prefix, 130 ctx->Version / 10, ctx->Version % 10, 131 (ctx->API == API_OPENGL_CORE) ? " (Core Profile)" : "" 132 ); 133 } 134 } 135 136 /** 137 * Override the context's version and/or API type if the environment variables 138 * MESA_GL_VERSION_OVERRIDE or MESA_GLES_VERSION_OVERRIDE are set. 139 * 140 * Example uses of MESA_GL_VERSION_OVERRIDE: 141 * 142 * 2.1: select a compatibility (non-Core) profile with GL version 2.1. 143 * 3.0: select a compatibility (non-Core) profile with GL version 3.0. 144 * 3.0FC: select a Core+Forward Compatible profile with GL version 3.0. 145 * 3.1: select GL version 3.1 with GL_ARB_compatibility enabled per the driver default. 146 * 3.1FC: select GL version 3.1 with forward compatibility and GL_ARB_compatibility disabled. 147 * 3.1COMPAT: select GL version 3.1 with GL_ARB_compatibility enabled. 148 * X.Y: override GL version to X.Y without changing the profile. 149 * X.YFC: select a Core+Forward Compatible profile with GL version X.Y. 150 * X.YCOMPAT: select a Compatibility profile with GL version X.Y. 151 * 152 * Example uses of MESA_GLES_VERSION_OVERRIDE: 153 * 154 * 2.0: select GLES version 2.0. 155 * 3.0: select GLES version 3.0. 156 * 3.1: select GLES version 3.1. 157 */ 158 bool 159 _mesa_override_gl_version_contextless(struct gl_constants *consts, 160 gl_api *apiOut, GLuint *versionOut) 161 { 162 int version; 163 bool fwd_context, compat_context; 164 165 get_gl_override(*apiOut, &version, &fwd_context, &compat_context); 166 167 if (version > 0) { 168 *versionOut = version; 169 170 /* Modify the API and context flags as needed. */ 171 if (*apiOut == API_OPENGL_CORE || *apiOut == API_OPENGL_COMPAT) { 172 if (version >= 30 && fwd_context) { 173 *apiOut = API_OPENGL_CORE; 174 consts->ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT; 175 } else if (compat_context) { 176 *apiOut = API_OPENGL_COMPAT; 177 } 178 } 179 180 return true; 181 } 182 return false; 183 } 184 185 void 186 _mesa_override_gl_version(struct gl_context *ctx) 187 { 188 if (_mesa_override_gl_version_contextless(&ctx->Const, &ctx->API, 189 &ctx->Version)) { 190 /* We need to include API in version string for OpenGL ES, otherwise 191 * application can not detect GLES via glGetString(GL_VERSION) query. 192 * 193 * From OpenGL ES 3.2 spec, Page 436: 194 * 195 * "The VERSION string is laid out as follows: 196 * 197 * OpenGL ES N.M vendor-specific information" 198 * 199 * From OpenGL 4.5 spec, Page 538: 200 * 201 * "The VERSION and SHADING_LANGUAGE_VERSION strings are laid out as 202 * follows: 203 * 204 * <version number><space><vendor-specific information>" 205 */ 206 create_version_string(ctx, _mesa_is_gles(ctx) ? "OpenGL ES " : ""); 207 ctx->Extensions.Version = ctx->Version; 208 } 209 } 210 211 /** 212 * Override the context's GLSL version if the environment variable 213 * MESA_GLSL_VERSION_OVERRIDE is set. Valid values for 214 * MESA_GLSL_VERSION_OVERRIDE are integers, such as "130". 215 */ 216 void 217 _mesa_override_glsl_version(struct gl_constants *consts) 218 { 219 const char *env_var = "MESA_GLSL_VERSION_OVERRIDE"; 220 const char *version; 221 int n; 222 223 version = getenv(env_var); 224 if (!version) { 225 return; 226 } 227 228 n = sscanf(version, "%u", &consts->GLSLVersion); 229 if (n != 1) { 230 fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version); 231 return; 232 } 233 } 234 235 /** 236 * Examine enabled GL extensions to determine GL version. 237 */ 238 static GLuint 239 compute_version(const struct gl_extensions *extensions, 240 const struct gl_constants *consts, gl_api api) 241 { 242 GLuint major, minor, version; 243 244 const bool ver_1_3 = (extensions->ARB_texture_border_clamp && 245 extensions->ARB_texture_cube_map && 246 extensions->ARB_texture_env_combine && 247 extensions->ARB_texture_env_dot3); 248 const bool ver_1_4 = (ver_1_3 && 249 extensions->ARB_depth_texture && 250 extensions->ARB_shadow && 251 extensions->ARB_texture_env_crossbar && 252 extensions->EXT_blend_color && 253 extensions->EXT_blend_func_separate && 254 extensions->EXT_blend_minmax && 255 extensions->EXT_point_parameters); 256 const bool ver_1_5 = (ver_1_4 && 257 extensions->ARB_occlusion_query); 258 const bool ver_2_0 = (ver_1_5 && 259 extensions->ARB_point_sprite && 260 extensions->ARB_vertex_shader && 261 extensions->ARB_fragment_shader && 262 extensions->ARB_texture_non_power_of_two && 263 extensions->EXT_blend_equation_separate && 264 265 /* Technically, 2.0 requires the functionality of the 266 * EXT version. Enable 2.0 if either extension is 267 * available, and assume that a driver that only 268 * exposes the ATI extension will fallback to 269 * software when necessary. 270 */ 271 (extensions->EXT_stencil_two_side 272 || extensions->ATI_separate_stencil)); 273 const bool ver_2_1 = (ver_2_0 && 274 extensions->EXT_pixel_buffer_object && 275 extensions->EXT_texture_sRGB); 276 const bool ver_3_0 = (ver_2_1 && 277 consts->GLSLVersion >= 130 && 278 (consts->MaxSamples >= 4 || consts->FakeSWMSAA) && 279 (api == API_OPENGL_CORE || 280 extensions->ARB_color_buffer_float) && 281 extensions->ARB_depth_buffer_float && 282 extensions->ARB_half_float_vertex && 283 extensions->ARB_map_buffer_range && 284 extensions->ARB_shader_texture_lod && 285 extensions->ARB_texture_float && 286 extensions->ARB_texture_rg && 287 extensions->ARB_texture_compression_rgtc && 288 extensions->EXT_draw_buffers2 && 289 extensions->ARB_framebuffer_object && 290 extensions->EXT_framebuffer_sRGB && 291 extensions->EXT_packed_float && 292 extensions->EXT_texture_array && 293 extensions->EXT_texture_shared_exponent && 294 extensions->EXT_transform_feedback && 295 extensions->NV_conditional_render); 296 const bool ver_3_1 = (ver_3_0 && 297 consts->GLSLVersion >= 140 && 298 extensions->ARB_draw_instanced && 299 extensions->ARB_texture_buffer_object && 300 extensions->ARB_uniform_buffer_object && 301 extensions->EXT_texture_snorm && 302 extensions->NV_primitive_restart && 303 extensions->NV_texture_rectangle && 304 consts->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits >= 16); 305 const bool ver_3_2 = (ver_3_1 && 306 consts->GLSLVersion >= 150 && 307 extensions->ARB_depth_clamp && 308 extensions->ARB_draw_elements_base_vertex && 309 extensions->ARB_fragment_coord_conventions && 310 extensions->EXT_provoking_vertex && 311 extensions->ARB_seamless_cube_map && 312 extensions->ARB_sync && 313 extensions->ARB_texture_multisample && 314 extensions->EXT_vertex_array_bgra); 315 const bool ver_3_3 = (ver_3_2 && 316 consts->GLSLVersion >= 330 && 317 extensions->ARB_blend_func_extended && 318 extensions->ARB_explicit_attrib_location && 319 extensions->ARB_instanced_arrays && 320 extensions->ARB_occlusion_query2 && 321 extensions->ARB_shader_bit_encoding && 322 extensions->ARB_texture_rgb10_a2ui && 323 extensions->ARB_timer_query && 324 extensions->ARB_vertex_type_2_10_10_10_rev && 325 extensions->EXT_texture_swizzle); 326 /* ARB_sampler_objects is always enabled in mesa */ 327 328 const bool ver_4_0 = (ver_3_3 && 329 consts->GLSLVersion >= 400 && 330 extensions->ARB_draw_buffers_blend && 331 extensions->ARB_draw_indirect && 332 extensions->ARB_gpu_shader5 && 333 extensions->ARB_gpu_shader_fp64 && 334 extensions->ARB_sample_shading && 335 extensions->ARB_tessellation_shader && 336 extensions->ARB_texture_buffer_object_rgb32 && 337 extensions->ARB_texture_cube_map_array && 338 extensions->ARB_texture_query_lod && 339 extensions->ARB_transform_feedback2 && 340 extensions->ARB_transform_feedback3); 341 const bool ver_4_1 = (ver_4_0 && 342 consts->GLSLVersion >= 410 && 343 extensions->ARB_ES2_compatibility && 344 extensions->ARB_shader_precision && 345 extensions->ARB_vertex_attrib_64bit && 346 extensions->ARB_viewport_array); 347 const bool ver_4_2 = (ver_4_1 && 348 consts->GLSLVersion >= 420 && 349 extensions->ARB_base_instance && 350 extensions->ARB_conservative_depth && 351 extensions->ARB_internalformat_query && 352 extensions->ARB_shader_atomic_counters && 353 extensions->ARB_shader_image_load_store && 354 extensions->ARB_shading_language_420pack && 355 extensions->ARB_shading_language_packing && 356 extensions->ARB_texture_compression_bptc && 357 extensions->ARB_transform_feedback_instanced); 358 const bool ver_4_3 = (ver_4_2 && 359 consts->GLSLVersion >= 430 && 360 consts->Program[MESA_SHADER_VERTEX].MaxUniformBlocks >= 14 && 361 extensions->ARB_ES3_compatibility && 362 extensions->ARB_arrays_of_arrays && 363 extensions->ARB_compute_shader && 364 extensions->ARB_copy_image && 365 extensions->ARB_explicit_uniform_location && 366 extensions->ARB_fragment_layer_viewport && 367 extensions->ARB_framebuffer_no_attachments && 368 extensions->ARB_internalformat_query2 && 369 extensions->ARB_robust_buffer_access_behavior && 370 extensions->ARB_shader_image_size && 371 extensions->ARB_shader_storage_buffer_object && 372 extensions->ARB_stencil_texturing && 373 extensions->ARB_texture_buffer_range && 374 extensions->ARB_texture_query_levels && 375 extensions->ARB_texture_view); 376 const bool ver_4_4 = (ver_4_3 && 377 consts->GLSLVersion >= 440 && 378 extensions->ARB_buffer_storage && 379 extensions->ARB_clear_texture && 380 extensions->ARB_enhanced_layouts && 381 extensions->ARB_query_buffer_object && 382 extensions->ARB_texture_mirror_clamp_to_edge && 383 extensions->ARB_texture_stencil8 && 384 extensions->ARB_vertex_type_10f_11f_11f_rev); 385 const bool ver_4_5 = (ver_4_4 && 386 consts->GLSLVersion >= 450 && 387 extensions->ARB_ES3_1_compatibility && 388 extensions->ARB_clip_control && 389 extensions->ARB_conditional_render_inverted && 390 extensions->ARB_cull_distance && 391 extensions->ARB_derivative_control && 392 extensions->ARB_shader_texture_image_samples && 393 extensions->NV_texture_barrier); 394 const bool ver_4_6 = (ver_4_5 && 395 consts->GLSLVersion >= 460 && 396 /* extensions->ARB_gl_spirv */ 0 && 397 /* extensions->ARB_spirv_extensions */ 0 && 398 extensions->ARB_indirect_parameters && 399 extensions->ARB_pipeline_statistics_query && 400 extensions->ARB_polygon_offset_clamp && 401 extensions->ARB_shader_atomic_counter_ops && 402 extensions->ARB_shader_draw_parameters && 403 extensions->ARB_shader_group_vote && 404 extensions->ARB_texture_filter_anisotropic && 405 extensions->ARB_transform_feedback_overflow_query); 406 407 if (ver_4_6) { 408 major = 4; 409 minor = 6; 410 } 411 else if (ver_4_5) { 412 major = 4; 413 minor = 5; 414 } 415 else if (ver_4_4) { 416 major = 4; 417 minor = 4; 418 } 419 else if (ver_4_3) { 420 major = 4; 421 minor = 3; 422 } 423 else if (ver_4_2) { 424 major = 4; 425 minor = 2; 426 } 427 else if (ver_4_1) { 428 major = 4; 429 minor = 1; 430 } 431 else if (ver_4_0) { 432 major = 4; 433 minor = 0; 434 } 435 else if (ver_3_3) { 436 major = 3; 437 minor = 3; 438 } 439 else if (ver_3_2) { 440 major = 3; 441 minor = 2; 442 } 443 else if (ver_3_1) { 444 major = 3; 445 minor = 1; 446 } 447 else if (ver_3_0) { 448 major = 3; 449 minor = 0; 450 } 451 else if (ver_2_1) { 452 major = 2; 453 minor = 1; 454 } 455 else if (ver_2_0) { 456 major = 2; 457 minor = 0; 458 } 459 else if (ver_1_5) { 460 major = 1; 461 minor = 5; 462 } 463 else if (ver_1_4) { 464 major = 1; 465 minor = 4; 466 } 467 else if (ver_1_3) { 468 major = 1; 469 minor = 3; 470 } 471 else { 472 major = 1; 473 minor = 2; 474 } 475 476 version = major * 10 + minor; 477 478 if (api == API_OPENGL_CORE && version < 31) 479 return 0; 480 481 return version; 482 } 483 484 static GLuint 485 compute_version_es1(const struct gl_extensions *extensions) 486 { 487 /* OpenGL ES 1.0 is derived from OpenGL 1.3 */ 488 const bool ver_1_0 = (extensions->ARB_texture_env_combine && 489 extensions->ARB_texture_env_dot3); 490 /* OpenGL ES 1.1 is derived from OpenGL 1.5 */ 491 const bool ver_1_1 = (ver_1_0 && 492 extensions->EXT_point_parameters); 493 494 if (ver_1_1) { 495 return 11; 496 } else if (ver_1_0) { 497 return 10; 498 } else { 499 return 0; 500 } 501 } 502 503 static GLuint 504 compute_version_es2(const struct gl_extensions *extensions, 505 const struct gl_constants *consts) 506 { 507 /* OpenGL ES 2.0 is derived from OpenGL 2.0 */ 508 const bool ver_2_0 = (extensions->ARB_texture_cube_map && 509 extensions->EXT_blend_color && 510 extensions->EXT_blend_func_separate && 511 extensions->EXT_blend_minmax && 512 extensions->ARB_vertex_shader && 513 extensions->ARB_fragment_shader && 514 extensions->ARB_texture_non_power_of_two && 515 extensions->EXT_blend_equation_separate); 516 /* FINISHME: This list isn't quite right. */ 517 const bool ver_3_0 = (extensions->ARB_half_float_vertex && 518 extensions->ARB_internalformat_query && 519 extensions->ARB_map_buffer_range && 520 extensions->ARB_shader_texture_lod && 521 extensions->ARB_texture_float && 522 extensions->ARB_texture_rg && 523 extensions->ARB_depth_buffer_float && 524 /* extensions->ARB_framebuffer_object && */ 525 extensions->EXT_framebuffer_sRGB && 526 extensions->EXT_packed_float && 527 extensions->EXT_texture_array && 528 extensions->EXT_texture_shared_exponent && 529 extensions->EXT_transform_feedback && 530 extensions->ARB_draw_instanced && 531 extensions->ARB_uniform_buffer_object && 532 extensions->EXT_texture_snorm && 533 extensions->NV_primitive_restart && 534 extensions->OES_depth_texture_cube_map); 535 const bool es31_compute_shader = 536 consts->MaxComputeWorkGroupInvocations >= 128; 537 const bool ver_3_1 = (ver_3_0 && 538 extensions->ARB_arrays_of_arrays && 539 es31_compute_shader && 540 extensions->ARB_draw_indirect && 541 extensions->ARB_explicit_uniform_location && 542 extensions->ARB_framebuffer_no_attachments && 543 extensions->ARB_shader_atomic_counters && 544 extensions->ARB_shader_image_load_store && 545 extensions->ARB_shader_image_size && 546 extensions->ARB_shader_storage_buffer_object && 547 extensions->ARB_shading_language_packing && 548 extensions->ARB_stencil_texturing && 549 extensions->ARB_texture_multisample && 550 extensions->ARB_gpu_shader5 && 551 extensions->EXT_shader_integer_mix); 552 const bool ver_3_2 = (ver_3_1 && 553 extensions->EXT_draw_buffers2 && 554 extensions->KHR_blend_equation_advanced && 555 extensions->KHR_robustness && 556 extensions->KHR_texture_compression_astc_ldr && 557 extensions->OES_copy_image && 558 extensions->ARB_draw_buffers_blend && 559 extensions->ARB_draw_elements_base_vertex && 560 extensions->OES_geometry_shader && 561 extensions->OES_primitive_bounding_box && 562 extensions->OES_sample_variables && 563 extensions->ARB_tessellation_shader && 564 extensions->ARB_texture_border_clamp && 565 extensions->OES_texture_buffer && 566 extensions->OES_texture_cube_map_array && 567 extensions->ARB_texture_stencil8); 568 569 if (ver_3_2) { 570 return 32; 571 } else if (ver_3_1) { 572 return 31; 573 } else if (ver_3_0) { 574 return 30; 575 } else if (ver_2_0) { 576 return 20; 577 } else { 578 return 0; 579 } 580 } 581 582 GLuint 583 _mesa_get_version(const struct gl_extensions *extensions, 584 struct gl_constants *consts, gl_api api) 585 { 586 switch (api) { 587 case API_OPENGL_COMPAT: 588 /* Disable GLSL 1.40 and later for legacy contexts. 589 * This disallows creation of the GL 3.1 compatibility context. */ 590 if (!consts->AllowHigherCompatVersion) { 591 if (consts->GLSLVersion > 130) { 592 consts->GLSLVersion = 130; 593 } 594 } 595 /* fall through */ 596 case API_OPENGL_CORE: 597 return compute_version(extensions, consts, api); 598 case API_OPENGLES: 599 return compute_version_es1(extensions); 600 case API_OPENGLES2: 601 return compute_version_es2(extensions, consts); 602 } 603 return 0; 604 } 605 606 /** 607 * Set the context's Version and VersionString fields. 608 * This should only be called once as part of context initialization 609 * or to perform version check for GLX_ARB_create_context_profile. 610 */ 611 void 612 _mesa_compute_version(struct gl_context *ctx) 613 { 614 if (ctx->Version) 615 return; 616 617 ctx->Version = _mesa_get_version(&ctx->Extensions, &ctx->Const, ctx->API); 618 ctx->Extensions.Version = ctx->Version; 619 620 /* Make sure that the GLSL version lines up with the GL version. In some 621 * cases it can be too high, e.g. if an extension is missing. 622 */ 623 if (ctx->API == API_OPENGL_CORE) { 624 switch (ctx->Version) { 625 case 31: 626 ctx->Const.GLSLVersion = 140; 627 break; 628 case 32: 629 ctx->Const.GLSLVersion = 150; 630 break; 631 default: 632 ctx->Const.GLSLVersion = ctx->Version * 10; 633 break; 634 } 635 } 636 637 switch (ctx->API) { 638 case API_OPENGL_COMPAT: 639 case API_OPENGL_CORE: 640 create_version_string(ctx, ""); 641 break; 642 643 case API_OPENGLES: 644 if (!ctx->Version) { 645 _mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support."); 646 return; 647 } 648 create_version_string(ctx, "OpenGL ES-CM "); 649 break; 650 651 case API_OPENGLES2: 652 if (!ctx->Version) { 653 _mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support."); 654 return; 655 } 656 create_version_string(ctx, "OpenGL ES "); 657 break; 658 } 659 } 660 661 662 void 663 _mesa_get_driver_uuid(struct gl_context *ctx, GLint *uuid) 664 { 665 ctx->Driver.GetDriverUuid(ctx, (char*) uuid); 666 } 667 668 void 669 _mesa_get_device_uuid(struct gl_context *ctx, GLint *uuid) 670 { 671 ctx->Driver.GetDeviceUuid(ctx, (char*) uuid); 672 } 673 674 /** 675 * Get the i-th GLSL version string. If index=0, return the most recent 676 * supported version. 677 * \param ctx context to query 678 * \param index which version string to return, or -1 if none 679 * \param versionOut returns the vesrion string 680 * \return total number of shading language versions. 681 */ 682 int 683 _mesa_get_shading_language_version(const struct gl_context *ctx, 684 int index, 685 char **versionOut) 686 { 687 int n = 0; 688 689 #define GLSL_VERSION(S) \ 690 if (n++ == index) \ 691 *versionOut = S 692 693 /* GLSL core */ 694 if (ctx->Const.GLSLVersion >= 460) 695 GLSL_VERSION("460"); 696 if (ctx->Const.GLSLVersion >= 450) 697 GLSL_VERSION("450"); 698 if (ctx->Const.GLSLVersion >= 440) 699 GLSL_VERSION("440"); 700 if (ctx->Const.GLSLVersion >= 430) 701 GLSL_VERSION("430"); 702 if (ctx->Const.GLSLVersion >= 420) 703 GLSL_VERSION("420"); 704 if (ctx->Const.GLSLVersion >= 410) 705 GLSL_VERSION("410"); 706 if (ctx->Const.GLSLVersion >= 400) 707 GLSL_VERSION("400"); 708 if (ctx->Const.GLSLVersion >= 330) 709 GLSL_VERSION("330"); 710 if (ctx->Const.GLSLVersion >= 150) 711 GLSL_VERSION("150"); 712 if (ctx->Const.GLSLVersion >= 140) 713 GLSL_VERSION("140"); 714 if (ctx->Const.GLSLVersion >= 130) 715 GLSL_VERSION("130"); 716 if (ctx->Const.GLSLVersion >= 120) 717 GLSL_VERSION("120"); 718 /* The GL spec says to return the empty string for GLSL 1.10 */ 719 if (ctx->Const.GLSLVersion >= 110) 720 GLSL_VERSION(""); 721 722 /* GLSL es */ 723 if ((ctx->API == API_OPENGLES2 && ctx->Version >= 32) || 724 ctx->Extensions.ARB_ES3_2_compatibility) 725 GLSL_VERSION("320 es"); 726 if (_mesa_is_gles31(ctx) || ctx->Extensions.ARB_ES3_1_compatibility) 727 GLSL_VERSION("310 es"); 728 if (_mesa_is_gles3(ctx) || ctx->Extensions.ARB_ES3_compatibility) 729 GLSL_VERSION("300 es"); 730 if (ctx->API == API_OPENGLES2 || ctx->Extensions.ARB_ES2_compatibility) 731 GLSL_VERSION("100"); 732 733 #undef GLSL_VERSION 734 735 return n; 736 } 737
