texparam.c revision 1a9e4d5113cf1fd608668506312167a676fcdb4f
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.5 4 * 5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included 16 * in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26/** 27 * \file texparam.c 28 * 29 * glTexParameter-related functions 30 */ 31 32 33#include "main/glheader.h" 34#include "main/colormac.h" 35#include "main/context.h" 36#include "main/enums.h" 37#include "main/formats.h" 38#include "main/glformats.h" 39#include "main/macros.h" 40#include "main/mfeatures.h" 41#include "main/mtypes.h" 42#include "main/state.h" 43#include "main/texcompress.h" 44#include "main/texobj.h" 45#include "main/texparam.h" 46#include "main/teximage.h" 47#include "main/texstate.h" 48#include "program/prog_instruction.h" 49 50 51/** 52 * Check if a coordinate wrap mode is supported for the texture target. 53 * \return GL_TRUE if legal, GL_FALSE otherwise 54 */ 55static GLboolean 56validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap) 57{ 58 const struct gl_extensions * const e = & ctx->Extensions; 59 60 if (target == GL_TEXTURE_RECTANGLE_NV) { 61 if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE || 62 (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) 63 return GL_TRUE; 64 } 65 else if (target == GL_TEXTURE_EXTERNAL_OES) { 66 if (wrap == GL_CLAMP_TO_EDGE) 67 return GL_TRUE; 68 } 69 else { 70 switch (wrap) { 71 case GL_CLAMP: 72 case GL_REPEAT: 73 case GL_CLAMP_TO_EDGE: 74 case GL_MIRRORED_REPEAT: 75 return GL_TRUE; 76 case GL_CLAMP_TO_BORDER: 77 if (e->ARB_texture_border_clamp) 78 return GL_TRUE; 79 break; 80 case GL_MIRROR_CLAMP_EXT: 81 case GL_MIRROR_CLAMP_TO_EDGE_EXT: 82 if (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp) 83 return GL_TRUE; 84 break; 85 case GL_MIRROR_CLAMP_TO_BORDER_EXT: 86 if (e->EXT_texture_mirror_clamp) 87 return GL_TRUE; 88 break; 89 default: 90 break; 91 } 92 } 93 94 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap ); 95 return GL_FALSE; 96} 97 98 99/** 100 * Get current texture object for given target. 101 * Return NULL if any error (and record the error). 102 * Note that this is different from _mesa_select_tex_object() in that proxy 103 * targets are not accepted. 104 * Only the glGetTexLevelParameter() functions accept proxy targets. 105 */ 106static struct gl_texture_object * 107get_texobj(struct gl_context *ctx, GLenum target, GLboolean get) 108{ 109 struct gl_texture_unit *texUnit; 110 111 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) { 112 _mesa_error(ctx, GL_INVALID_OPERATION, 113 "gl%sTexParameter(current unit)", get ? "Get" : ""); 114 return NULL; 115 } 116 117 texUnit = _mesa_get_current_tex_unit(ctx); 118 119 switch (target) { 120 case GL_TEXTURE_1D: 121 return texUnit->CurrentTex[TEXTURE_1D_INDEX]; 122 case GL_TEXTURE_2D: 123 return texUnit->CurrentTex[TEXTURE_2D_INDEX]; 124 case GL_TEXTURE_3D: 125 return texUnit->CurrentTex[TEXTURE_3D_INDEX]; 126 case GL_TEXTURE_CUBE_MAP: 127 if (ctx->Extensions.ARB_texture_cube_map) { 128 return texUnit->CurrentTex[TEXTURE_CUBE_INDEX]; 129 } 130 break; 131 case GL_TEXTURE_RECTANGLE_NV: 132 if (ctx->Extensions.NV_texture_rectangle) { 133 return texUnit->CurrentTex[TEXTURE_RECT_INDEX]; 134 } 135 break; 136 case GL_TEXTURE_1D_ARRAY_EXT: 137 if (ctx->Extensions.MESA_texture_array || 138 ctx->Extensions.EXT_texture_array) { 139 return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX]; 140 } 141 break; 142 case GL_TEXTURE_2D_ARRAY_EXT: 143 if (ctx->Extensions.MESA_texture_array || 144 ctx->Extensions.EXT_texture_array) { 145 return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX]; 146 } 147 break; 148 case GL_TEXTURE_EXTERNAL_OES: 149 if (ctx->Extensions.OES_EGL_image_external) { 150 return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX]; 151 } 152 break; 153 default: 154 ; 155 } 156 157 _mesa_error(ctx, GL_INVALID_ENUM, 158 "gl%sTexParameter(target)", get ? "Get" : ""); 159 return NULL; 160} 161 162 163/** 164 * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE. 165 * \return -1 if error. 166 */ 167static GLint 168comp_to_swizzle(GLenum comp) 169{ 170 switch (comp) { 171 case GL_RED: 172 return SWIZZLE_X; 173 case GL_GREEN: 174 return SWIZZLE_Y; 175 case GL_BLUE: 176 return SWIZZLE_Z; 177 case GL_ALPHA: 178 return SWIZZLE_W; 179 case GL_ZERO: 180 return SWIZZLE_ZERO; 181 case GL_ONE: 182 return SWIZZLE_ONE; 183 default: 184 return -1; 185 } 186} 187 188 189static void 190set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz) 191{ 192 ASSERT(comp < 4); 193 ASSERT(swz <= SWIZZLE_NIL); 194 { 195 GLuint mask = 0x7 << (3 * comp); 196 GLuint s = (*swizzle & ~mask) | (swz << (3 * comp)); 197 *swizzle = s; 198 } 199} 200 201 202/** 203 * This is called just prior to changing any texture object state which 204 * will not effect texture completeness. 205 */ 206static inline void 207flush(struct gl_context *ctx) 208{ 209 FLUSH_VERTICES(ctx, _NEW_TEXTURE); 210} 211 212 213/** 214 * This is called just prior to changing any texture object state which 215 * can effect texture completeness (texture base level, max level). 216 * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE 217 * state flag and then mark the texture object as 'incomplete' so that any 218 * per-texture derived state gets recomputed. 219 */ 220static inline void 221incomplete(struct gl_context *ctx, struct gl_texture_object *texObj) 222{ 223 FLUSH_VERTICES(ctx, _NEW_TEXTURE); 224 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 225} 226 227 228/** 229 * Set an integer-valued texture parameter 230 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise 231 */ 232static GLboolean 233set_tex_parameteri(struct gl_context *ctx, 234 struct gl_texture_object *texObj, 235 GLenum pname, const GLint *params) 236{ 237 switch (pname) { 238 case GL_TEXTURE_MIN_FILTER: 239 if (texObj->Sampler.MinFilter == params[0]) 240 return GL_FALSE; 241 switch (params[0]) { 242 case GL_NEAREST: 243 case GL_LINEAR: 244 flush(ctx); 245 texObj->Sampler.MinFilter = params[0]; 246 return GL_TRUE; 247 case GL_NEAREST_MIPMAP_NEAREST: 248 case GL_LINEAR_MIPMAP_NEAREST: 249 case GL_NEAREST_MIPMAP_LINEAR: 250 case GL_LINEAR_MIPMAP_LINEAR: 251 if (texObj->Target != GL_TEXTURE_RECTANGLE_NV && 252 texObj->Target != GL_TEXTURE_EXTERNAL_OES) { 253 flush(ctx); 254 texObj->Sampler.MinFilter = params[0]; 255 return GL_TRUE; 256 } 257 /* fall-through */ 258 default: 259 goto invalid_param; 260 } 261 return GL_FALSE; 262 263 case GL_TEXTURE_MAG_FILTER: 264 if (texObj->Sampler.MagFilter == params[0]) 265 return GL_FALSE; 266 switch (params[0]) { 267 case GL_NEAREST: 268 case GL_LINEAR: 269 flush(ctx); /* does not effect completeness */ 270 texObj->Sampler.MagFilter = params[0]; 271 return GL_TRUE; 272 default: 273 goto invalid_param; 274 } 275 return GL_FALSE; 276 277 case GL_TEXTURE_WRAP_S: 278 if (texObj->Sampler.WrapS == params[0]) 279 return GL_FALSE; 280 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { 281 flush(ctx); 282 texObj->Sampler.WrapS = params[0]; 283 return GL_TRUE; 284 } 285 return GL_FALSE; 286 287 case GL_TEXTURE_WRAP_T: 288 if (texObj->Sampler.WrapT == params[0]) 289 return GL_FALSE; 290 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { 291 flush(ctx); 292 texObj->Sampler.WrapT = params[0]; 293 return GL_TRUE; 294 } 295 return GL_FALSE; 296 297 case GL_TEXTURE_WRAP_R: 298 if (texObj->Sampler.WrapR == params[0]) 299 return GL_FALSE; 300 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { 301 flush(ctx); 302 texObj->Sampler.WrapR = params[0]; 303 return GL_TRUE; 304 } 305 return GL_FALSE; 306 307 case GL_TEXTURE_BASE_LEVEL: 308 if (texObj->BaseLevel == params[0]) 309 return GL_FALSE; 310 if (params[0] < 0 || 311 (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) { 312 _mesa_error(ctx, GL_INVALID_VALUE, 313 "glTexParameter(param=%d)", params[0]); 314 return GL_FALSE; 315 } 316 incomplete(ctx, texObj); 317 texObj->BaseLevel = params[0]; 318 return GL_TRUE; 319 320 case GL_TEXTURE_MAX_LEVEL: 321 if (texObj->MaxLevel == params[0]) 322 return GL_FALSE; 323 if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) { 324 _mesa_error(ctx, GL_INVALID_OPERATION, 325 "glTexParameter(param=%d)", params[0]); 326 return GL_FALSE; 327 } 328 incomplete(ctx, texObj); 329 texObj->MaxLevel = params[0]; 330 return GL_TRUE; 331 332 case GL_GENERATE_MIPMAP_SGIS: 333 if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES) 334 goto invalid_param; 335 if (texObj->GenerateMipmap != params[0]) { 336 /* no flush() */ 337 texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE; 338 return GL_TRUE; 339 } 340 return GL_FALSE; 341 342 case GL_TEXTURE_COMPARE_MODE_ARB: 343 if (ctx->Extensions.ARB_shadow) { 344 if (texObj->Sampler.CompareMode == params[0]) 345 return GL_FALSE; 346 if (params[0] == GL_NONE || 347 params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) { 348 flush(ctx); 349 texObj->Sampler.CompareMode = params[0]; 350 return GL_TRUE; 351 } 352 goto invalid_param; 353 } 354 goto invalid_pname; 355 356 case GL_TEXTURE_COMPARE_FUNC_ARB: 357 if (ctx->Extensions.ARB_shadow) { 358 if (texObj->Sampler.CompareFunc == params[0]) 359 return GL_FALSE; 360 switch (params[0]) { 361 case GL_LEQUAL: 362 case GL_GEQUAL: 363 flush(ctx); 364 texObj->Sampler.CompareFunc = params[0]; 365 return GL_TRUE; 366 case GL_EQUAL: 367 case GL_NOTEQUAL: 368 case GL_LESS: 369 case GL_GREATER: 370 case GL_ALWAYS: 371 case GL_NEVER: 372 if (ctx->Extensions.EXT_shadow_funcs) { 373 flush(ctx); 374 texObj->Sampler.CompareFunc = params[0]; 375 return GL_TRUE; 376 } 377 /* fall-through */ 378 default: 379 goto invalid_param; 380 } 381 } 382 goto invalid_pname; 383 384 case GL_DEPTH_TEXTURE_MODE_ARB: 385 if (ctx->Extensions.ARB_depth_texture) { 386 if (texObj->DepthMode == params[0]) 387 return GL_FALSE; 388 if (params[0] == GL_LUMINANCE || 389 params[0] == GL_INTENSITY || 390 params[0] == GL_ALPHA || 391 (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) { 392 flush(ctx); 393 texObj->DepthMode = params[0]; 394 return GL_TRUE; 395 } 396 goto invalid_param; 397 } 398 goto invalid_pname; 399 400#if FEATURE_OES_draw_texture 401 case GL_TEXTURE_CROP_RECT_OES: 402 texObj->CropRect[0] = params[0]; 403 texObj->CropRect[1] = params[1]; 404 texObj->CropRect[2] = params[2]; 405 texObj->CropRect[3] = params[3]; 406 return GL_TRUE; 407#endif 408 409 case GL_TEXTURE_SWIZZLE_R_EXT: 410 case GL_TEXTURE_SWIZZLE_G_EXT: 411 case GL_TEXTURE_SWIZZLE_B_EXT: 412 case GL_TEXTURE_SWIZZLE_A_EXT: 413 if (ctx->Extensions.EXT_texture_swizzle) { 414 const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT; 415 const GLint swz = comp_to_swizzle(params[0]); 416 if (swz < 0) { 417 _mesa_error(ctx, GL_INVALID_OPERATION, 418 "glTexParameter(swizzle 0x%x)", params[0]); 419 return GL_FALSE; 420 } 421 ASSERT(comp < 4); 422 423 flush(ctx); 424 texObj->Swizzle[comp] = params[0]; 425 set_swizzle_component(&texObj->_Swizzle, comp, swz); 426 return GL_TRUE; 427 } 428 goto invalid_pname; 429 430 case GL_TEXTURE_SWIZZLE_RGBA_EXT: 431 if (ctx->Extensions.EXT_texture_swizzle) { 432 GLuint comp; 433 flush(ctx); 434 for (comp = 0; comp < 4; comp++) { 435 const GLint swz = comp_to_swizzle(params[comp]); 436 if (swz >= 0) { 437 texObj->Swizzle[comp] = params[comp]; 438 set_swizzle_component(&texObj->_Swizzle, comp, swz); 439 } 440 else { 441 _mesa_error(ctx, GL_INVALID_OPERATION, 442 "glTexParameter(swizzle 0x%x)", params[comp]); 443 return GL_FALSE; 444 } 445 } 446 return GL_TRUE; 447 } 448 goto invalid_pname; 449 450 case GL_TEXTURE_SRGB_DECODE_EXT: 451 if (ctx->Extensions.EXT_texture_sRGB_decode) { 452 GLenum decode = params[0]; 453 if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) { 454 if (texObj->Sampler.sRGBDecode != decode) { 455 flush(ctx); 456 texObj->Sampler.sRGBDecode = decode; 457 } 458 return GL_TRUE; 459 } 460 } 461 goto invalid_pname; 462 463 case GL_TEXTURE_CUBE_MAP_SEAMLESS: 464 if (ctx->Extensions.AMD_seamless_cubemap_per_texture) { 465 GLenum param = params[0]; 466 if (param != GL_TRUE && param != GL_FALSE) { 467 goto invalid_param; 468 } 469 if (param != texObj->Sampler.CubeMapSeamless) { 470 flush(ctx); 471 texObj->Sampler.CubeMapSeamless = param; 472 } 473 return GL_TRUE; 474 } 475 goto invalid_pname; 476 477 default: 478 goto invalid_pname; 479 } 480 481invalid_pname: 482 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)", 483 _mesa_lookup_enum_by_nr(pname)); 484 return GL_FALSE; 485 486invalid_param: 487 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)", 488 _mesa_lookup_enum_by_nr(params[0])); 489 return GL_FALSE; 490} 491 492 493/** 494 * Set a float-valued texture parameter 495 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise 496 */ 497static GLboolean 498set_tex_parameterf(struct gl_context *ctx, 499 struct gl_texture_object *texObj, 500 GLenum pname, const GLfloat *params) 501{ 502 switch (pname) { 503 case GL_TEXTURE_MIN_LOD: 504 if (texObj->Sampler.MinLod == params[0]) 505 return GL_FALSE; 506 flush(ctx); 507 texObj->Sampler.MinLod = params[0]; 508 return GL_TRUE; 509 510 case GL_TEXTURE_MAX_LOD: 511 if (texObj->Sampler.MaxLod == params[0]) 512 return GL_FALSE; 513 flush(ctx); 514 texObj->Sampler.MaxLod = params[0]; 515 return GL_TRUE; 516 517 case GL_TEXTURE_PRIORITY: 518 flush(ctx); 519 texObj->Priority = CLAMP(params[0], 0.0F, 1.0F); 520 return GL_TRUE; 521 522 case GL_TEXTURE_MAX_ANISOTROPY_EXT: 523 if (ctx->Extensions.EXT_texture_filter_anisotropic) { 524 if (texObj->Sampler.MaxAnisotropy == params[0]) 525 return GL_FALSE; 526 if (params[0] < 1.0) { 527 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); 528 return GL_FALSE; 529 } 530 flush(ctx); 531 /* clamp to max, that's what NVIDIA does */ 532 texObj->Sampler.MaxAnisotropy = MIN2(params[0], 533 ctx->Const.MaxTextureMaxAnisotropy); 534 return GL_TRUE; 535 } 536 else { 537 static GLuint count = 0; 538 if (count++ < 10) 539 _mesa_error(ctx, GL_INVALID_ENUM, 540 "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)"); 541 } 542 return GL_FALSE; 543 544 case GL_TEXTURE_LOD_BIAS: 545 /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */ 546 if (texObj->Sampler.LodBias != params[0]) { 547 flush(ctx); 548 texObj->Sampler.LodBias = params[0]; 549 return GL_TRUE; 550 } 551 break; 552 553 case GL_TEXTURE_BORDER_COLOR: 554 flush(ctx); 555 /* ARB_texture_float disables clamping */ 556 if (ctx->Extensions.ARB_texture_float) { 557 texObj->Sampler.BorderColor.f[RCOMP] = params[0]; 558 texObj->Sampler.BorderColor.f[GCOMP] = params[1]; 559 texObj->Sampler.BorderColor.f[BCOMP] = params[2]; 560 texObj->Sampler.BorderColor.f[ACOMP] = params[3]; 561 } else { 562 texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F); 563 texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F); 564 texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F); 565 texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F); 566 } 567 return GL_TRUE; 568 569 default: 570 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); 571 } 572 return GL_FALSE; 573} 574 575 576void GLAPIENTRY 577_mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param) 578{ 579 GLboolean need_update; 580 struct gl_texture_object *texObj; 581 GET_CURRENT_CONTEXT(ctx); 582 ASSERT_OUTSIDE_BEGIN_END(ctx); 583 584 texObj = get_texobj(ctx, target, GL_FALSE); 585 if (!texObj) 586 return; 587 588 switch (pname) { 589 case GL_TEXTURE_MIN_FILTER: 590 case GL_TEXTURE_MAG_FILTER: 591 case GL_TEXTURE_WRAP_S: 592 case GL_TEXTURE_WRAP_T: 593 case GL_TEXTURE_WRAP_R: 594 case GL_TEXTURE_BASE_LEVEL: 595 case GL_TEXTURE_MAX_LEVEL: 596 case GL_GENERATE_MIPMAP_SGIS: 597 case GL_TEXTURE_COMPARE_MODE_ARB: 598 case GL_TEXTURE_COMPARE_FUNC_ARB: 599 case GL_DEPTH_TEXTURE_MODE_ARB: 600 case GL_TEXTURE_SRGB_DECODE_EXT: 601 case GL_TEXTURE_CUBE_MAP_SEAMLESS: 602 { 603 /* convert float param to int */ 604 GLint p[4]; 605 p[0] = (GLint) param; 606 p[1] = p[2] = p[3] = 0; 607 need_update = set_tex_parameteri(ctx, texObj, pname, p); 608 } 609 break; 610 case GL_TEXTURE_SWIZZLE_R_EXT: 611 case GL_TEXTURE_SWIZZLE_G_EXT: 612 case GL_TEXTURE_SWIZZLE_B_EXT: 613 case GL_TEXTURE_SWIZZLE_A_EXT: 614 { 615 GLint p[4]; 616 p[0] = (GLint) param; 617 p[1] = p[2] = p[3] = 0; 618 need_update = set_tex_parameteri(ctx, texObj, pname, p); 619 } 620 break; 621 default: 622 { 623 /* this will generate an error if pname is illegal */ 624 GLfloat p[4]; 625 p[0] = param; 626 p[1] = p[2] = p[3] = 0.0F; 627 need_update = set_tex_parameterf(ctx, texObj, pname, p); 628 } 629 } 630 631 if (ctx->Driver.TexParameter && need_update) { 632 ctx->Driver.TexParameter(ctx, target, texObj, pname, ¶m); 633 } 634} 635 636 637void GLAPIENTRY 638_mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params) 639{ 640 GLboolean need_update; 641 struct gl_texture_object *texObj; 642 GET_CURRENT_CONTEXT(ctx); 643 ASSERT_OUTSIDE_BEGIN_END(ctx); 644 645 texObj = get_texobj(ctx, target, GL_FALSE); 646 if (!texObj) 647 return; 648 649 switch (pname) { 650 case GL_TEXTURE_MIN_FILTER: 651 case GL_TEXTURE_MAG_FILTER: 652 case GL_TEXTURE_WRAP_S: 653 case GL_TEXTURE_WRAP_T: 654 case GL_TEXTURE_WRAP_R: 655 case GL_TEXTURE_BASE_LEVEL: 656 case GL_TEXTURE_MAX_LEVEL: 657 case GL_GENERATE_MIPMAP_SGIS: 658 case GL_TEXTURE_COMPARE_MODE_ARB: 659 case GL_TEXTURE_COMPARE_FUNC_ARB: 660 case GL_DEPTH_TEXTURE_MODE_ARB: 661 case GL_TEXTURE_SRGB_DECODE_EXT: 662 case GL_TEXTURE_CUBE_MAP_SEAMLESS: 663 { 664 /* convert float param to int */ 665 GLint p[4]; 666 p[0] = (GLint) params[0]; 667 p[1] = p[2] = p[3] = 0; 668 need_update = set_tex_parameteri(ctx, texObj, pname, p); 669 } 670 break; 671 672#if FEATURE_OES_draw_texture 673 case GL_TEXTURE_CROP_RECT_OES: 674 { 675 /* convert float params to int */ 676 GLint iparams[4]; 677 iparams[0] = (GLint) params[0]; 678 iparams[1] = (GLint) params[1]; 679 iparams[2] = (GLint) params[2]; 680 iparams[3] = (GLint) params[3]; 681 need_update = set_tex_parameteri(ctx, texObj, pname, iparams); 682 } 683 break; 684#endif 685 686 case GL_TEXTURE_SWIZZLE_R_EXT: 687 case GL_TEXTURE_SWIZZLE_G_EXT: 688 case GL_TEXTURE_SWIZZLE_B_EXT: 689 case GL_TEXTURE_SWIZZLE_A_EXT: 690 case GL_TEXTURE_SWIZZLE_RGBA_EXT: 691 { 692 GLint p[4] = {0, 0, 0, 0}; 693 p[0] = (GLint) params[0]; 694 if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) { 695 p[1] = (GLint) params[1]; 696 p[2] = (GLint) params[2]; 697 p[3] = (GLint) params[3]; 698 } 699 need_update = set_tex_parameteri(ctx, texObj, pname, p); 700 } 701 break; 702 default: 703 /* this will generate an error if pname is illegal */ 704 need_update = set_tex_parameterf(ctx, texObj, pname, params); 705 } 706 707 if (ctx->Driver.TexParameter && need_update) { 708 ctx->Driver.TexParameter(ctx, target, texObj, pname, params); 709 } 710} 711 712 713void GLAPIENTRY 714_mesa_TexParameteri(GLenum target, GLenum pname, GLint param) 715{ 716 GLboolean need_update; 717 struct gl_texture_object *texObj; 718 GET_CURRENT_CONTEXT(ctx); 719 ASSERT_OUTSIDE_BEGIN_END(ctx); 720 721 texObj = get_texobj(ctx, target, GL_FALSE); 722 if (!texObj) 723 return; 724 725 switch (pname) { 726 case GL_TEXTURE_MIN_LOD: 727 case GL_TEXTURE_MAX_LOD: 728 case GL_TEXTURE_PRIORITY: 729 case GL_TEXTURE_MAX_ANISOTROPY_EXT: 730 case GL_TEXTURE_LOD_BIAS: 731 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: 732 { 733 GLfloat fparam[4]; 734 fparam[0] = (GLfloat) param; 735 fparam[1] = fparam[2] = fparam[3] = 0.0F; 736 /* convert int param to float */ 737 need_update = set_tex_parameterf(ctx, texObj, pname, fparam); 738 } 739 break; 740 default: 741 /* this will generate an error if pname is illegal */ 742 { 743 GLint iparam[4]; 744 iparam[0] = param; 745 iparam[1] = iparam[2] = iparam[3] = 0; 746 need_update = set_tex_parameteri(ctx, texObj, pname, iparam); 747 } 748 } 749 750 if (ctx->Driver.TexParameter && need_update) { 751 GLfloat fparam = (GLfloat) param; 752 ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam); 753 } 754} 755 756 757void GLAPIENTRY 758_mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params) 759{ 760 GLboolean need_update; 761 struct gl_texture_object *texObj; 762 GET_CURRENT_CONTEXT(ctx); 763 ASSERT_OUTSIDE_BEGIN_END(ctx); 764 765 texObj = get_texobj(ctx, target, GL_FALSE); 766 if (!texObj) 767 return; 768 769 switch (pname) { 770 case GL_TEXTURE_BORDER_COLOR: 771 { 772 /* convert int params to float */ 773 GLfloat fparams[4]; 774 fparams[0] = INT_TO_FLOAT(params[0]); 775 fparams[1] = INT_TO_FLOAT(params[1]); 776 fparams[2] = INT_TO_FLOAT(params[2]); 777 fparams[3] = INT_TO_FLOAT(params[3]); 778 need_update = set_tex_parameterf(ctx, texObj, pname, fparams); 779 } 780 break; 781 case GL_TEXTURE_MIN_LOD: 782 case GL_TEXTURE_MAX_LOD: 783 case GL_TEXTURE_PRIORITY: 784 case GL_TEXTURE_MAX_ANISOTROPY_EXT: 785 case GL_TEXTURE_LOD_BIAS: 786 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: 787 { 788 /* convert int param to float */ 789 GLfloat fparams[4]; 790 fparams[0] = (GLfloat) params[0]; 791 fparams[1] = fparams[2] = fparams[3] = 0.0F; 792 need_update = set_tex_parameterf(ctx, texObj, pname, fparams); 793 } 794 break; 795 default: 796 /* this will generate an error if pname is illegal */ 797 need_update = set_tex_parameteri(ctx, texObj, pname, params); 798 } 799 800 if (ctx->Driver.TexParameter && need_update) { 801 GLfloat fparams[4]; 802 fparams[0] = INT_TO_FLOAT(params[0]); 803 if (pname == GL_TEXTURE_BORDER_COLOR || 804 pname == GL_TEXTURE_CROP_RECT_OES) { 805 fparams[1] = INT_TO_FLOAT(params[1]); 806 fparams[2] = INT_TO_FLOAT(params[2]); 807 fparams[3] = INT_TO_FLOAT(params[3]); 808 } 809 ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams); 810 } 811} 812 813 814/** 815 * Set tex parameter to integer value(s). Primarily intended to set 816 * integer-valued texture border color (for integer-valued textures). 817 * New in GL 3.0. 818 */ 819void GLAPIENTRY 820_mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params) 821{ 822 struct gl_texture_object *texObj; 823 GET_CURRENT_CONTEXT(ctx); 824 ASSERT_OUTSIDE_BEGIN_END(ctx); 825 826 texObj = get_texobj(ctx, target, GL_FALSE); 827 if (!texObj) 828 return; 829 830 switch (pname) { 831 case GL_TEXTURE_BORDER_COLOR: 832 FLUSH_VERTICES(ctx, _NEW_TEXTURE); 833 /* set the integer-valued border color */ 834 COPY_4V(texObj->Sampler.BorderColor.i, params); 835 break; 836 default: 837 _mesa_TexParameteriv(target, pname, params); 838 break; 839 } 840 /* XXX no driver hook for TexParameterIiv() yet */ 841} 842 843 844/** 845 * Set tex parameter to unsigned integer value(s). Primarily intended to set 846 * uint-valued texture border color (for integer-valued textures). 847 * New in GL 3.0 848 */ 849void GLAPIENTRY 850_mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params) 851{ 852 struct gl_texture_object *texObj; 853 GET_CURRENT_CONTEXT(ctx); 854 ASSERT_OUTSIDE_BEGIN_END(ctx); 855 856 texObj = get_texobj(ctx, target, GL_FALSE); 857 if (!texObj) 858 return; 859 860 switch (pname) { 861 case GL_TEXTURE_BORDER_COLOR: 862 FLUSH_VERTICES(ctx, _NEW_TEXTURE); 863 /* set the unsigned integer-valued border color */ 864 COPY_4V(texObj->Sampler.BorderColor.ui, params); 865 break; 866 default: 867 _mesa_TexParameteriv(target, pname, (const GLint *) params); 868 break; 869 } 870 /* XXX no driver hook for TexParameterIuiv() yet */ 871} 872 873 874static GLboolean 875legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target) 876{ 877 switch (target) { 878 case GL_TEXTURE_1D: 879 case GL_PROXY_TEXTURE_1D: 880 case GL_TEXTURE_2D: 881 case GL_PROXY_TEXTURE_2D: 882 case GL_TEXTURE_3D: 883 case GL_PROXY_TEXTURE_3D: 884 return GL_TRUE; 885 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 886 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 887 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 888 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 889 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 890 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 891 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 892 return ctx->Extensions.ARB_texture_cube_map; 893 case GL_TEXTURE_RECTANGLE_NV: 894 case GL_PROXY_TEXTURE_RECTANGLE_NV: 895 return ctx->Extensions.NV_texture_rectangle; 896 case GL_TEXTURE_1D_ARRAY_EXT: 897 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 898 case GL_TEXTURE_2D_ARRAY_EXT: 899 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 900 return (ctx->Extensions.MESA_texture_array || 901 ctx->Extensions.EXT_texture_array); 902 case GL_TEXTURE_BUFFER: 903 /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts, 904 * but not in earlier versions that expose ARB_texture_buffer_object. 905 * 906 * From the ARB_texture_buffer_object spec: 907 * "(7) Do buffer textures support texture parameters (TexParameter) or 908 * queries (GetTexParameter, GetTexLevelParameter, GetTexImage)? 909 * 910 * RESOLVED: No. [...] Note that the spec edits above don't add 911 * explicit error language for any of these cases. That is because 912 * each of the functions enumerate the set of valid <target> 913 * parameters. Not editing the spec to allow TEXTURE_BUFFER_ARB in 914 * these cases means that target is not legal, and an INVALID_ENUM 915 * error should be generated." 916 * 917 * From the OpenGL 3.1 spec: 918 * "target may also be TEXTURE_BUFFER, indicating the texture buffer." 919 */ 920 return _mesa_is_desktop_gl(ctx) && ctx->Version >= 31; 921 default: 922 return GL_FALSE; 923 } 924} 925 926 927static void 928get_tex_level_parameter_image(struct gl_context *ctx, 929 const struct gl_texture_object *texObj, 930 GLenum target, GLint level, 931 GLenum pname, GLint *params) 932{ 933 const struct gl_texture_image *img = NULL; 934 gl_format texFormat; 935 936 img = _mesa_select_tex_image(ctx, texObj, target, level); 937 if (!img || img->TexFormat == MESA_FORMAT_NONE) { 938 /* undefined texture image */ 939 if (pname == GL_TEXTURE_COMPONENTS) 940 *params = 1; 941 else 942 *params = 0; 943 return; 944 } 945 946 texFormat = img->TexFormat; 947 948 switch (pname) { 949 case GL_TEXTURE_WIDTH: 950 *params = img->Width; 951 break; 952 case GL_TEXTURE_HEIGHT: 953 *params = img->Height; 954 break; 955 case GL_TEXTURE_DEPTH: 956 *params = img->Depth; 957 break; 958 case GL_TEXTURE_INTERNAL_FORMAT: 959 if (_mesa_is_format_compressed(texFormat)) { 960 /* need to return the actual compressed format */ 961 *params = _mesa_compressed_format_to_glenum(ctx, texFormat); 962 } 963 else { 964 /* If the true internal format is not compressed but the user 965 * requested a generic compressed format, we have to return the 966 * generic base format that matches. 967 * 968 * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec: 969 * 970 * "If no specific compressed format is available, 971 * internalformat is instead replaced by the corresponding base 972 * internal format." 973 * 974 * Otherwise just return the user's requested internal format 975 */ 976 const GLenum f = 977 _mesa_gl_compressed_format_base_format(img->InternalFormat); 978 979 *params = (f != 0) ? f : img->InternalFormat; 980 } 981 break; 982 case GL_TEXTURE_BORDER: 983 *params = img->Border; 984 break; 985 case GL_TEXTURE_RED_SIZE: 986 case GL_TEXTURE_GREEN_SIZE: 987 case GL_TEXTURE_BLUE_SIZE: 988 case GL_TEXTURE_ALPHA_SIZE: 989 if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) 990 *params = _mesa_get_format_bits(texFormat, pname); 991 else 992 *params = 0; 993 break; 994 case GL_TEXTURE_INTENSITY_SIZE: 995 case GL_TEXTURE_LUMINANCE_SIZE: 996 if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) { 997 *params = _mesa_get_format_bits(texFormat, pname); 998 if (*params == 0) { 999 /* intensity or luminance is probably stored as RGB[A] */ 1000 *params = MIN2(_mesa_get_format_bits(texFormat, 1001 GL_TEXTURE_RED_SIZE), 1002 _mesa_get_format_bits(texFormat, 1003 GL_TEXTURE_GREEN_SIZE)); 1004 } 1005 } 1006 else { 1007 *params = 0; 1008 } 1009 break; 1010 case GL_TEXTURE_DEPTH_SIZE_ARB: 1011 if (!ctx->Extensions.ARB_depth_texture) 1012 goto invalid_pname; 1013 *params = _mesa_get_format_bits(texFormat, pname); 1014 break; 1015 case GL_TEXTURE_STENCIL_SIZE_EXT: 1016 if (!ctx->Extensions.EXT_packed_depth_stencil && 1017 !ctx->Extensions.ARB_framebuffer_object) 1018 goto invalid_pname; 1019 *params = _mesa_get_format_bits(texFormat, pname); 1020 break; 1021 case GL_TEXTURE_SHARED_SIZE: 1022 if (ctx->Version < 30 && 1023 !ctx->Extensions.EXT_texture_shared_exponent) 1024 goto invalid_pname; 1025 *params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0; 1026 break; 1027 1028 /* GL_ARB_texture_compression */ 1029 case GL_TEXTURE_COMPRESSED_IMAGE_SIZE: 1030 if (_mesa_is_format_compressed(texFormat) && 1031 !_mesa_is_proxy_texture(target)) { 1032 *params = _mesa_format_image_size(texFormat, img->Width, 1033 img->Height, img->Depth); 1034 } 1035 else { 1036 _mesa_error(ctx, GL_INVALID_OPERATION, 1037 "glGetTexLevelParameter[if]v(pname)"); 1038 } 1039 break; 1040 case GL_TEXTURE_COMPRESSED: 1041 *params = (GLint) _mesa_is_format_compressed(texFormat); 1042 break; 1043 1044 /* GL_ARB_texture_float */ 1045 case GL_TEXTURE_RED_TYPE_ARB: 1046 case GL_TEXTURE_GREEN_TYPE_ARB: 1047 case GL_TEXTURE_BLUE_TYPE_ARB: 1048 case GL_TEXTURE_ALPHA_TYPE_ARB: 1049 case GL_TEXTURE_LUMINANCE_TYPE_ARB: 1050 case GL_TEXTURE_INTENSITY_TYPE_ARB: 1051 case GL_TEXTURE_DEPTH_TYPE_ARB: 1052 if (!ctx->Extensions.ARB_texture_float) 1053 goto invalid_pname; 1054 if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) 1055 *params = _mesa_get_format_datatype(texFormat); 1056 else 1057 *params = GL_NONE; 1058 break; 1059 1060 default: 1061 goto invalid_pname; 1062 } 1063 1064 /* no error if we get here */ 1065 return; 1066 1067invalid_pname: 1068 _mesa_error(ctx, GL_INVALID_ENUM, 1069 "glGetTexLevelParameter[if]v(pname=%s)", 1070 _mesa_lookup_enum_by_nr(pname)); 1071} 1072 1073 1074static void 1075get_tex_level_parameter_buffer(struct gl_context *ctx, 1076 const struct gl_texture_object *texObj, 1077 GLenum pname, GLint *params) 1078{ 1079 const struct gl_buffer_object *bo = texObj->BufferObject; 1080 gl_format texFormat = texObj->_BufferObjectFormat; 1081 GLenum internalFormat = texObj->BufferObjectFormat; 1082 GLenum baseFormat = _mesa_get_format_base_format(texFormat); 1083 1084 if (!bo) { 1085 /* undefined texture buffer object */ 1086 *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0; 1087 return; 1088 } 1089 1090 switch (pname) { 1091 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING: 1092 *params = bo->Name; 1093 break; 1094 case GL_TEXTURE_WIDTH: 1095 *params = bo->Size; 1096 break; 1097 case GL_TEXTURE_HEIGHT: 1098 case GL_TEXTURE_DEPTH: 1099 case GL_TEXTURE_BORDER: 1100 case GL_TEXTURE_SHARED_SIZE: 1101 case GL_TEXTURE_COMPRESSED: 1102 *params = 0; 1103 break; 1104 case GL_TEXTURE_INTERNAL_FORMAT: 1105 *params = internalFormat; 1106 break; 1107 case GL_TEXTURE_RED_SIZE: 1108 case GL_TEXTURE_GREEN_SIZE: 1109 case GL_TEXTURE_BLUE_SIZE: 1110 case GL_TEXTURE_ALPHA_SIZE: 1111 if (_mesa_base_format_has_channel(baseFormat, pname)) 1112 *params = _mesa_get_format_bits(texFormat, pname); 1113 else 1114 *params = 0; 1115 break; 1116 case GL_TEXTURE_INTENSITY_SIZE: 1117 case GL_TEXTURE_LUMINANCE_SIZE: 1118 if (_mesa_base_format_has_channel(baseFormat, pname)) { 1119 *params = _mesa_get_format_bits(texFormat, pname); 1120 if (*params == 0) { 1121 /* intensity or luminance is probably stored as RGB[A] */ 1122 *params = MIN2(_mesa_get_format_bits(texFormat, 1123 GL_TEXTURE_RED_SIZE), 1124 _mesa_get_format_bits(texFormat, 1125 GL_TEXTURE_GREEN_SIZE)); 1126 } 1127 } else { 1128 *params = 0; 1129 } 1130 break; 1131 case GL_TEXTURE_DEPTH_SIZE_ARB: 1132 case GL_TEXTURE_STENCIL_SIZE_EXT: 1133 *params = _mesa_get_format_bits(texFormat, pname); 1134 break; 1135 1136 /* GL_ARB_texture_compression */ 1137 case GL_TEXTURE_COMPRESSED_IMAGE_SIZE: 1138 /* Always illegal for GL_TEXTURE_BUFFER */ 1139 _mesa_error(ctx, GL_INVALID_OPERATION, 1140 "glGetTexLevelParameter[if]v(pname)"); 1141 break; 1142 1143 /* GL_ARB_texture_float */ 1144 case GL_TEXTURE_RED_TYPE_ARB: 1145 case GL_TEXTURE_GREEN_TYPE_ARB: 1146 case GL_TEXTURE_BLUE_TYPE_ARB: 1147 case GL_TEXTURE_ALPHA_TYPE_ARB: 1148 case GL_TEXTURE_LUMINANCE_TYPE_ARB: 1149 case GL_TEXTURE_INTENSITY_TYPE_ARB: 1150 case GL_TEXTURE_DEPTH_TYPE_ARB: 1151 if (!ctx->Extensions.ARB_texture_float) 1152 goto invalid_pname; 1153 if (_mesa_base_format_has_channel(baseFormat, pname)) 1154 *params = _mesa_get_format_datatype(texFormat); 1155 else 1156 *params = GL_NONE; 1157 break; 1158 1159 default: 1160 goto invalid_pname; 1161 } 1162 1163 /* no error if we get here */ 1164 return; 1165 1166invalid_pname: 1167 _mesa_error(ctx, GL_INVALID_ENUM, 1168 "glGetTexLevelParameter[if]v(pname=%s)", 1169 _mesa_lookup_enum_by_nr(pname)); 1170} 1171 1172 1173void GLAPIENTRY 1174_mesa_GetTexLevelParameterfv( GLenum target, GLint level, 1175 GLenum pname, GLfloat *params ) 1176{ 1177 GLint iparam; 1178 _mesa_GetTexLevelParameteriv( target, level, pname, &iparam ); 1179 *params = (GLfloat) iparam; 1180} 1181 1182 1183void GLAPIENTRY 1184_mesa_GetTexLevelParameteriv( GLenum target, GLint level, 1185 GLenum pname, GLint *params ) 1186{ 1187 const struct gl_texture_unit *texUnit; 1188 struct gl_texture_object *texObj; 1189 GLint maxLevels; 1190 GET_CURRENT_CONTEXT(ctx); 1191 ASSERT_OUTSIDE_BEGIN_END(ctx); 1192 1193 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) { 1194 _mesa_error(ctx, GL_INVALID_OPERATION, 1195 "glGetTexLevelParameteriv(current unit)"); 1196 return; 1197 } 1198 1199 texUnit = _mesa_get_current_tex_unit(ctx); 1200 1201 if (!legal_get_tex_level_parameter_target(ctx, target)) { 1202 _mesa_error(ctx, GL_INVALID_ENUM, 1203 "glGetTexLevelParameter[if]v(target=0x%x)", target); 1204 return; 1205 } 1206 1207 maxLevels = _mesa_max_texture_levels(ctx, target); 1208 assert(maxLevels != 0); 1209 1210 if (level < 0 || level >= maxLevels) { 1211 _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" ); 1212 return; 1213 } 1214 1215 texObj = _mesa_select_tex_object(ctx, texUnit, target); 1216 1217 if (target == GL_TEXTURE_BUFFER) 1218 get_tex_level_parameter_buffer(ctx, texObj, pname, params); 1219 else 1220 get_tex_level_parameter_image(ctx, texObj, target, level, pname, params); 1221} 1222 1223 1224void GLAPIENTRY 1225_mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params ) 1226{ 1227 struct gl_texture_object *obj; 1228 GET_CURRENT_CONTEXT(ctx); 1229 ASSERT_OUTSIDE_BEGIN_END(ctx); 1230 1231 obj = get_texobj(ctx, target, GL_TRUE); 1232 if (!obj) 1233 return; 1234 1235 _mesa_lock_texture(ctx, obj); 1236 switch (pname) { 1237 case GL_TEXTURE_MAG_FILTER: 1238 *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter); 1239 break; 1240 case GL_TEXTURE_MIN_FILTER: 1241 *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter); 1242 break; 1243 case GL_TEXTURE_WRAP_S: 1244 *params = ENUM_TO_FLOAT(obj->Sampler.WrapS); 1245 break; 1246 case GL_TEXTURE_WRAP_T: 1247 *params = ENUM_TO_FLOAT(obj->Sampler.WrapT); 1248 break; 1249 case GL_TEXTURE_WRAP_R: 1250 *params = ENUM_TO_FLOAT(obj->Sampler.WrapR); 1251 break; 1252 case GL_TEXTURE_BORDER_COLOR: 1253 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP)) 1254 _mesa_update_state_locked(ctx); 1255 if (ctx->Color._ClampFragmentColor) { 1256 params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F); 1257 params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F); 1258 params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F); 1259 params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F); 1260 } 1261 else { 1262 params[0] = obj->Sampler.BorderColor.f[0]; 1263 params[1] = obj->Sampler.BorderColor.f[1]; 1264 params[2] = obj->Sampler.BorderColor.f[2]; 1265 params[3] = obj->Sampler.BorderColor.f[3]; 1266 } 1267 break; 1268 case GL_TEXTURE_RESIDENT: 1269 *params = 1.0F; 1270 break; 1271 case GL_TEXTURE_PRIORITY: 1272 *params = obj->Priority; 1273 break; 1274 case GL_TEXTURE_MIN_LOD: 1275 *params = obj->Sampler.MinLod; 1276 break; 1277 case GL_TEXTURE_MAX_LOD: 1278 *params = obj->Sampler.MaxLod; 1279 break; 1280 case GL_TEXTURE_BASE_LEVEL: 1281 *params = (GLfloat) obj->BaseLevel; 1282 break; 1283 case GL_TEXTURE_MAX_LEVEL: 1284 *params = (GLfloat) obj->MaxLevel; 1285 break; 1286 case GL_TEXTURE_MAX_ANISOTROPY_EXT: 1287 if (!ctx->Extensions.EXT_texture_filter_anisotropic) 1288 goto invalid_pname; 1289 *params = obj->Sampler.MaxAnisotropy; 1290 break; 1291 case GL_GENERATE_MIPMAP_SGIS: 1292 *params = (GLfloat) obj->GenerateMipmap; 1293 break; 1294 case GL_TEXTURE_COMPARE_MODE_ARB: 1295 if (!ctx->Extensions.ARB_shadow) 1296 goto invalid_pname; 1297 *params = (GLfloat) obj->Sampler.CompareMode; 1298 break; 1299 case GL_TEXTURE_COMPARE_FUNC_ARB: 1300 if (!ctx->Extensions.ARB_shadow) 1301 goto invalid_pname; 1302 *params = (GLfloat) obj->Sampler.CompareFunc; 1303 break; 1304 case GL_DEPTH_TEXTURE_MODE_ARB: 1305 if (!ctx->Extensions.ARB_depth_texture) 1306 goto invalid_pname; 1307 *params = (GLfloat) obj->DepthMode; 1308 break; 1309 case GL_TEXTURE_LOD_BIAS: 1310 *params = obj->Sampler.LodBias; 1311 break; 1312#if FEATURE_OES_draw_texture 1313 case GL_TEXTURE_CROP_RECT_OES: 1314 params[0] = obj->CropRect[0]; 1315 params[1] = obj->CropRect[1]; 1316 params[2] = obj->CropRect[2]; 1317 params[3] = obj->CropRect[3]; 1318 break; 1319#endif 1320 1321 case GL_TEXTURE_SWIZZLE_R_EXT: 1322 case GL_TEXTURE_SWIZZLE_G_EXT: 1323 case GL_TEXTURE_SWIZZLE_B_EXT: 1324 case GL_TEXTURE_SWIZZLE_A_EXT: 1325 if (!ctx->Extensions.EXT_texture_swizzle) 1326 goto invalid_pname; 1327 *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT]; 1328 break; 1329 1330 case GL_TEXTURE_SWIZZLE_RGBA_EXT: 1331 if (!ctx->Extensions.EXT_texture_swizzle) { 1332 goto invalid_pname; 1333 } 1334 else { 1335 GLuint comp; 1336 for (comp = 0; comp < 4; comp++) { 1337 params[comp] = (GLfloat) obj->Swizzle[comp]; 1338 } 1339 } 1340 break; 1341 1342 case GL_TEXTURE_CUBE_MAP_SEAMLESS: 1343 if (!ctx->Extensions.AMD_seamless_cubemap_per_texture) 1344 goto invalid_pname; 1345 *params = (GLfloat) obj->Sampler.CubeMapSeamless; 1346 break; 1347 1348 case GL_TEXTURE_IMMUTABLE_FORMAT: 1349 if (!ctx->Extensions.ARB_texture_storage) 1350 goto invalid_pname; 1351 *params = (GLfloat) obj->Immutable; 1352 break; 1353 1354 default: 1355 goto invalid_pname; 1356 } 1357 1358 /* no error if we get here */ 1359 _mesa_unlock_texture(ctx, obj); 1360 return; 1361 1362invalid_pname: 1363 _mesa_unlock_texture(ctx, obj); 1364 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname); 1365} 1366 1367 1368void GLAPIENTRY 1369_mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) 1370{ 1371 struct gl_texture_object *obj; 1372 GET_CURRENT_CONTEXT(ctx); 1373 ASSERT_OUTSIDE_BEGIN_END(ctx); 1374 1375 obj = get_texobj(ctx, target, GL_TRUE); 1376 if (!obj) 1377 return; 1378 1379 _mesa_lock_texture(ctx, obj); 1380 switch (pname) { 1381 case GL_TEXTURE_MAG_FILTER: 1382 *params = (GLint) obj->Sampler.MagFilter; 1383 break; 1384 case GL_TEXTURE_MIN_FILTER: 1385 *params = (GLint) obj->Sampler.MinFilter; 1386 break; 1387 case GL_TEXTURE_WRAP_S: 1388 *params = (GLint) obj->Sampler.WrapS; 1389 break; 1390 case GL_TEXTURE_WRAP_T: 1391 *params = (GLint) obj->Sampler.WrapT; 1392 break; 1393 case GL_TEXTURE_WRAP_R: 1394 *params = (GLint) obj->Sampler.WrapR; 1395 break; 1396 case GL_TEXTURE_BORDER_COLOR: 1397 { 1398 GLfloat b[4]; 1399 b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F); 1400 b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F); 1401 b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F); 1402 b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F); 1403 params[0] = FLOAT_TO_INT(b[0]); 1404 params[1] = FLOAT_TO_INT(b[1]); 1405 params[2] = FLOAT_TO_INT(b[2]); 1406 params[3] = FLOAT_TO_INT(b[3]); 1407 } 1408 break; 1409 case GL_TEXTURE_RESIDENT: 1410 *params = 1; 1411 break; 1412 case GL_TEXTURE_PRIORITY: 1413 *params = FLOAT_TO_INT(obj->Priority); 1414 break; 1415 case GL_TEXTURE_MIN_LOD: 1416 *params = (GLint) obj->Sampler.MinLod; 1417 break; 1418 case GL_TEXTURE_MAX_LOD: 1419 *params = (GLint) obj->Sampler.MaxLod; 1420 break; 1421 case GL_TEXTURE_BASE_LEVEL: 1422 *params = obj->BaseLevel; 1423 break; 1424 case GL_TEXTURE_MAX_LEVEL: 1425 *params = obj->MaxLevel; 1426 break; 1427 case GL_TEXTURE_MAX_ANISOTROPY_EXT: 1428 if (!ctx->Extensions.EXT_texture_filter_anisotropic) 1429 goto invalid_pname; 1430 *params = (GLint) obj->Sampler.MaxAnisotropy; 1431 break; 1432 case GL_GENERATE_MIPMAP_SGIS: 1433 *params = (GLint) obj->GenerateMipmap; 1434 break; 1435 case GL_TEXTURE_COMPARE_MODE_ARB: 1436 if (!ctx->Extensions.ARB_shadow) 1437 goto invalid_pname; 1438 *params = (GLint) obj->Sampler.CompareMode; 1439 break; 1440 case GL_TEXTURE_COMPARE_FUNC_ARB: 1441 if (!ctx->Extensions.ARB_shadow) 1442 goto invalid_pname; 1443 *params = (GLint) obj->Sampler.CompareFunc; 1444 break; 1445 case GL_DEPTH_TEXTURE_MODE_ARB: 1446 if (!ctx->Extensions.ARB_depth_texture) 1447 goto invalid_pname; 1448 *params = (GLint) obj->DepthMode; 1449 break; 1450 case GL_TEXTURE_LOD_BIAS: 1451 *params = (GLint) obj->Sampler.LodBias; 1452 break; 1453#if FEATURE_OES_draw_texture 1454 case GL_TEXTURE_CROP_RECT_OES: 1455 params[0] = obj->CropRect[0]; 1456 params[1] = obj->CropRect[1]; 1457 params[2] = obj->CropRect[2]; 1458 params[3] = obj->CropRect[3]; 1459 break; 1460#endif 1461 case GL_TEXTURE_SWIZZLE_R_EXT: 1462 case GL_TEXTURE_SWIZZLE_G_EXT: 1463 case GL_TEXTURE_SWIZZLE_B_EXT: 1464 case GL_TEXTURE_SWIZZLE_A_EXT: 1465 if (!ctx->Extensions.EXT_texture_swizzle) 1466 goto invalid_pname; 1467 *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT]; 1468 break; 1469 1470 case GL_TEXTURE_SWIZZLE_RGBA_EXT: 1471 if (!ctx->Extensions.EXT_texture_swizzle) 1472 goto invalid_pname; 1473 COPY_4V(params, obj->Swizzle); 1474 break; 1475 1476 case GL_TEXTURE_CUBE_MAP_SEAMLESS: 1477 if (!ctx->Extensions.AMD_seamless_cubemap_per_texture) 1478 goto invalid_pname; 1479 *params = (GLint) obj->Sampler.CubeMapSeamless; 1480 break; 1481 1482 case GL_TEXTURE_IMMUTABLE_FORMAT: 1483 if (!ctx->Extensions.ARB_texture_storage) 1484 goto invalid_pname; 1485 *params = (GLint) obj->Immutable; 1486 break; 1487 1488 case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES: 1489 if (!ctx->Extensions.OES_EGL_image_external) 1490 goto invalid_pname; 1491 *params = obj->RequiredTextureImageUnits; 1492 break; 1493 1494 default: 1495 goto invalid_pname; 1496 } 1497 1498 /* no error if we get here */ 1499 _mesa_unlock_texture(ctx, obj); 1500 return; 1501 1502invalid_pname: 1503 _mesa_unlock_texture(ctx, obj); 1504 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname); 1505} 1506 1507 1508/** New in GL 3.0 */ 1509void GLAPIENTRY 1510_mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params) 1511{ 1512 struct gl_texture_object *texObj; 1513 GET_CURRENT_CONTEXT(ctx); 1514 ASSERT_OUTSIDE_BEGIN_END(ctx); 1515 1516 texObj = get_texobj(ctx, target, GL_TRUE); 1517 if (!texObj) 1518 return; 1519 1520 switch (pname) { 1521 case GL_TEXTURE_BORDER_COLOR: 1522 COPY_4V(params, texObj->Sampler.BorderColor.i); 1523 break; 1524 default: 1525 _mesa_GetTexParameteriv(target, pname, params); 1526 } 1527} 1528 1529 1530/** New in GL 3.0 */ 1531void GLAPIENTRY 1532_mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params) 1533{ 1534 struct gl_texture_object *texObj; 1535 GET_CURRENT_CONTEXT(ctx); 1536 ASSERT_OUTSIDE_BEGIN_END(ctx); 1537 1538 texObj = get_texobj(ctx, target, GL_TRUE); 1539 if (!texObj) 1540 return; 1541 1542 switch (pname) { 1543 case GL_TEXTURE_BORDER_COLOR: 1544 COPY_4V(params, texObj->Sampler.BorderColor.i); 1545 break; 1546 default: 1547 { 1548 GLint ip[4]; 1549 _mesa_GetTexParameteriv(target, pname, ip); 1550 params[0] = ip[0]; 1551 if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT || 1552 pname == GL_TEXTURE_CROP_RECT_OES) { 1553 params[1] = ip[1]; 1554 params[2] = ip[2]; 1555 params[3] = ip[3]; 1556 } 1557 } 1558 } 1559} 1560