reactos/dll/opengl/mesa/src/mesa/main/texparam.c

   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/image.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/texparam.h"
  45 #include "main/teximage.h"
  46 #include "main/texstate.h"
  47 #include "program/prog_instruction.h"
  48
  49
  50 /**
  51  * Check if a coordinate wrap mode is supported for the texture target.
  52  * \return GL_TRUE if legal, GL_FALSE otherwise
  53  */
  54 static GLboolean
  55 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
  56 {
  57    const struct gl_extensions * const e = & ctx->Extensions;
  58
  59    if (target == GL_TEXTURE_RECTANGLE_NV) {
  60       if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE ||
  61           (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp))
  62          return GL_TRUE;
  63    }
  64    else if (target == GL_TEXTURE_EXTERNAL_OES) {
  65       if (wrap == GL_CLAMP_TO_EDGE)
  66          return GL_TRUE;
  67    }
  68    else {
  69       switch (wrap) {
  70       case GL_CLAMP:
  71       case GL_REPEAT:
  72       case GL_CLAMP_TO_EDGE:
  73       case GL_MIRRORED_REPEAT:
  74          return GL_TRUE;
  75       case GL_CLAMP_TO_BORDER:
  76          if (e->ARB_texture_border_clamp)
  77             return GL_TRUE;
  78          break;
  79       case GL_MIRROR_CLAMP_EXT:
  80       case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  81          if (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  82             return GL_TRUE;
  83          break;
  84       case GL_MIRROR_CLAMP_TO_BORDER_EXT:
  85          if (e->EXT_texture_mirror_clamp)
  86             return GL_TRUE;
  87          break;
  88       default:
  89          break;
  90       }
  91    }
  92
  93    _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
  94    return GL_FALSE;
  95 }
  96
  97
  98 /**
  99  * Get current texture object for given target.
 100  * Return NULL if any error (and record the error).
 101  * Note that this is different from _mesa_select_tex_object() in that proxy
 102  * targets are not accepted.
 103  * Only the glGetTexLevelParameter() functions accept proxy targets.
 104  */
 105 static struct gl_texture_object *
 106 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
 107 {
 108    struct gl_texture_unit *texUnit;
 109
 110    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 111       _mesa_error(ctx, GL_INVALID_OPERATION,
 112                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 113       return NULL;
 114    }
 115
 116    texUnit = _mesa_get_current_tex_unit(ctx);
 117
 118    switch (target) {
 119    case GL_TEXTURE_1D:
 120       return texUnit->CurrentTex[TEXTURE_1D_INDEX];
 121    case GL_TEXTURE_2D:
 122       return texUnit->CurrentTex[TEXTURE_2D_INDEX];
 123    case GL_TEXTURE_3D:
 124       return texUnit->CurrentTex[TEXTURE_3D_INDEX];
 125    case GL_TEXTURE_CUBE_MAP:
 126       if (ctx->Extensions.ARB_texture_cube_map) {
 127          return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
 128       }
 129       break;
 130    case GL_TEXTURE_RECTANGLE_NV:
 131       if (ctx->Extensions.NV_texture_rectangle) {
 132          return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
 133       }
 134       break;
 135    case GL_TEXTURE_1D_ARRAY_EXT:
 136       if (ctx->Extensions.MESA_texture_array ||
 137           ctx->Extensions.EXT_texture_array) {
 138          return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
 139       }
 140       break;
 141    case GL_TEXTURE_2D_ARRAY_EXT:
 142       if (ctx->Extensions.MESA_texture_array ||
 143           ctx->Extensions.EXT_texture_array) {
 144          return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
 145       }
 146       break;
 147    case GL_TEXTURE_EXTERNAL_OES:
 148       if (ctx->Extensions.OES_EGL_image_external) {
 149          return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX];
 150       }
 151       break;
 152    default:
 153       ;
 154    }
 155
 156    _mesa_error(ctx, GL_INVALID_ENUM,
 157                   "gl%sTexParameter(target)", get ? "Get" : "");
 158    return NULL;
 159 }
 160
 161
 162 /**
 163  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 164  * \return -1 if error.
 165  */
 166 static GLint
 167 comp_to_swizzle(GLenum comp)
 168 {
 169    switch (comp) {
 170    case GL_RED:
 171       return SWIZZLE_X;
 172    case GL_GREEN:
 173       return SWIZZLE_Y;
 174    case GL_BLUE:
 175       return SWIZZLE_Z;
 176    case GL_ALPHA:
 177       return SWIZZLE_W;
 178    case GL_ZERO:
 179       return SWIZZLE_ZERO;
 180    case GL_ONE:
 181       return SWIZZLE_ONE;
 182    default:
 183       return -1;
 184    }
 185 }
 186
 187
 188 static void
 189 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 190 {
 191    ASSERT(comp < 4);
 192    ASSERT(swz <= SWIZZLE_NIL);
 193    {
 194       GLuint mask = 0x7 << (3 * comp);
 195       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 196       *swizzle = s;
 197    }
 198 }
 199
 200
 201 /**
 202  * This is called just prior to changing any texture object state which
 203  * will not effect texture completeness.
 204  */
 205 static inline void
 206 flush(struct gl_context *ctx)
 207 {
 208    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 209 }
 210
 211
 212 /**
 213  * This is called just prior to changing any texture object state which
 214  * can effect texture completeness (texture base level, max level,
 215  * minification filter).
 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  */
 220 static inline void
 221 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 222 {
 223    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 224    texObj->_Complete = GL_FALSE;
 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  */
 232 static GLboolean
 233 set_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          incomplete(ctx, texObj);
 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             incomplete(ctx, texObj);
 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->Sampler.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->Sampler.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
 481 invalid_pname:
 482    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 483                _mesa_lookup_enum_by_nr(pname));
 484    return GL_FALSE;
 485
 486 invalid_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  */
 497 static GLboolean
 498 set_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_COMPARE_FAIL_VALUE_ARB:
 545       if (ctx->Extensions.ARB_shadow_ambient) {
 546          if (texObj->Sampler.CompareFailValue != params[0]) {
 547             flush(ctx);
 548             texObj->Sampler.CompareFailValue = CLAMP(params[0], 0.0F, 1.0F);
 549             return GL_TRUE;
 550          }
 551       }
 552       else {
 553          _mesa_error(ctx, GL_INVALID_ENUM,
 554                     "glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)");
 555       }
 556       return GL_FALSE;
 557
 558    case GL_TEXTURE_LOD_BIAS:
 559       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
 560       if (texObj->Sampler.LodBias != params[0]) {
 561          flush(ctx);
 562          texObj->Sampler.LodBias = params[0];
 563          return GL_TRUE;
 564       }
 565       break;
 566
 567    case GL_TEXTURE_BORDER_COLOR:
 568       flush(ctx);
 569       /* ARB_texture_float disables clamping */
 570       if (ctx->Extensions.ARB_texture_float) {
 571          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 572          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 573          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 574          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 575       } else {
 576          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 577          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 578          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 579          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 580       }
 581       return GL_TRUE;
 582
 583    default:
 584       _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
 585    }
 586    return GL_FALSE;
 587 }
 588
 589
 590 void GLAPIENTRY
 591 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 592 {
 593    GLboolean need_update;
 594    struct gl_texture_object *texObj;
 595    GET_CURRENT_CONTEXT(ctx);
 596    ASSERT_OUTSIDE_BEGIN_END(ctx);
 597
 598    texObj = get_texobj(ctx, target, GL_FALSE);
 599    if (!texObj)
 600       return;
 601
 602    switch (pname) {
 603    case GL_TEXTURE_MIN_FILTER:
 604    case GL_TEXTURE_MAG_FILTER:
 605    case GL_TEXTURE_WRAP_S:
 606    case GL_TEXTURE_WRAP_T:
 607    case GL_TEXTURE_WRAP_R:
 608    case GL_TEXTURE_BASE_LEVEL:
 609    case GL_TEXTURE_MAX_LEVEL:
 610    case GL_GENERATE_MIPMAP_SGIS:
 611    case GL_TEXTURE_COMPARE_MODE_ARB:
 612    case GL_TEXTURE_COMPARE_FUNC_ARB:
 613    case GL_DEPTH_TEXTURE_MODE_ARB:
 614    case GL_TEXTURE_SRGB_DECODE_EXT:
 615    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 616       {
 617          /* convert float param to int */
 618          GLint p[4];
 619          p[0] = (GLint) param;
 620          p[1] = p[2] = p[3] = 0;
 621          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 622       }
 623       break;
 624    case GL_TEXTURE_SWIZZLE_R_EXT:
 625    case GL_TEXTURE_SWIZZLE_G_EXT:
 626    case GL_TEXTURE_SWIZZLE_B_EXT:
 627    case GL_TEXTURE_SWIZZLE_A_EXT:
 628       {
 629          GLint p[4];
 630          p[0] = (GLint) param;
 631          p[1] = p[2] = p[3] = 0;
 632          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 633       }
 634       break;
 635    default:
 636       {
 637          /* this will generate an error if pname is illegal */
 638          GLfloat p[4];
 639          p[0] = param;
 640          p[1] = p[2] = p[3] = 0.0F;
 641          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 642       }
 643    }
 644
 645    if (ctx->Driver.TexParameter && need_update) {
 646       ctx->Driver.TexParameter(ctx, target, texObj, pname, &param);
 647    }
 648 }
 649
 650
 651 void GLAPIENTRY
 652 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 653 {
 654    GLboolean need_update;
 655    struct gl_texture_object *texObj;
 656    GET_CURRENT_CONTEXT(ctx);
 657    ASSERT_OUTSIDE_BEGIN_END(ctx);
 658
 659    texObj = get_texobj(ctx, target, GL_FALSE);
 660    if (!texObj)
 661       return;
 662
 663    switch (pname) {
 664    case GL_TEXTURE_MIN_FILTER:
 665    case GL_TEXTURE_MAG_FILTER:
 666    case GL_TEXTURE_WRAP_S:
 667    case GL_TEXTURE_WRAP_T:
 668    case GL_TEXTURE_WRAP_R:
 669    case GL_TEXTURE_BASE_LEVEL:
 670    case GL_TEXTURE_MAX_LEVEL:
 671    case GL_GENERATE_MIPMAP_SGIS:
 672    case GL_TEXTURE_COMPARE_MODE_ARB:
 673    case GL_TEXTURE_COMPARE_FUNC_ARB:
 674    case GL_DEPTH_TEXTURE_MODE_ARB:
 675    case GL_TEXTURE_SRGB_DECODE_EXT:
 676    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 677       {
 678          /* convert float param to int */
 679          GLint p[4];
 680          p[0] = (GLint) params[0];
 681          p[1] = p[2] = p[3] = 0;
 682          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 683       }
 684       break;
 685
 686 #if FEATURE_OES_draw_texture
 687    case GL_TEXTURE_CROP_RECT_OES:
 688       {
 689          /* convert float params to int */
 690          GLint iparams[4];
 691          iparams[0] = (GLint) params[0];
 692          iparams[1] = (GLint) params[1];
 693          iparams[2] = (GLint) params[2];
 694          iparams[3] = (GLint) params[3];
 695          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 696       }
 697       break;
 698 #endif
 699
 700    case GL_TEXTURE_SWIZZLE_R_EXT:
 701    case GL_TEXTURE_SWIZZLE_G_EXT:
 702    case GL_TEXTURE_SWIZZLE_B_EXT:
 703    case GL_TEXTURE_SWIZZLE_A_EXT:
 704    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 705       {
 706          GLint p[4] = {0, 0, 0, 0};
 707          p[0] = (GLint) params[0];
 708          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 709             p[1] = (GLint) params[1];
 710             p[2] = (GLint) params[2];
 711             p[3] = (GLint) params[3];
 712          }
 713          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 714       }
 715       break;
 716    default:
 717       /* this will generate an error if pname is illegal */
 718       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 719    }
 720
 721    if (ctx->Driver.TexParameter && need_update) {
 722       ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
 723    }
 724 }
 725
 726
 727 void GLAPIENTRY
 728 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 729 {
 730    GLboolean need_update;
 731    struct gl_texture_object *texObj;
 732    GET_CURRENT_CONTEXT(ctx);
 733    ASSERT_OUTSIDE_BEGIN_END(ctx);
 734
 735    texObj = get_texobj(ctx, target, GL_FALSE);
 736    if (!texObj)
 737       return;
 738
 739    switch (pname) {
 740    case GL_TEXTURE_MIN_LOD:
 741    case GL_TEXTURE_MAX_LOD:
 742    case GL_TEXTURE_PRIORITY:
 743    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 744    case GL_TEXTURE_LOD_BIAS:
 745    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 746       {
 747          GLfloat fparam[4];
 748          fparam[0] = (GLfloat) param;
 749          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 750          /* convert int param to float */
 751          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 752       }
 753       break;
 754    default:
 755       /* this will generate an error if pname is illegal */
 756       {
 757          GLint iparam[4];
 758          iparam[0] = param;
 759          iparam[1] = iparam[2] = iparam[3] = 0;
 760          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 761       }
 762    }
 763
 764    if (ctx->Driver.TexParameter && need_update) {
 765       GLfloat fparam = (GLfloat) param;
 766       ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
 767    }
 768 }
 769
 770
 771 void GLAPIENTRY
 772 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 773 {
 774    GLboolean need_update;
 775    struct gl_texture_object *texObj;
 776    GET_CURRENT_CONTEXT(ctx);
 777    ASSERT_OUTSIDE_BEGIN_END(ctx);
 778
 779    texObj = get_texobj(ctx, target, GL_FALSE);
 780    if (!texObj)
 781       return;
 782
 783    switch (pname) {
 784    case GL_TEXTURE_BORDER_COLOR:
 785       {
 786          /* convert int params to float */
 787          GLfloat fparams[4];
 788          fparams[0] = INT_TO_FLOAT(params[0]);
 789          fparams[1] = INT_TO_FLOAT(params[1]);
 790          fparams[2] = INT_TO_FLOAT(params[2]);
 791          fparams[3] = INT_TO_FLOAT(params[3]);
 792          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 793       }
 794       break;
 795    case GL_TEXTURE_MIN_LOD:
 796    case GL_TEXTURE_MAX_LOD:
 797    case GL_TEXTURE_PRIORITY:
 798    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 799    case GL_TEXTURE_LOD_BIAS:
 800    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 801       {
 802          /* convert int param to float */
 803          GLfloat fparams[4];
 804          fparams[0] = (GLfloat) params[0];
 805          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 806          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 807       }
 808       break;
 809    default:
 810       /* this will generate an error if pname is illegal */
 811       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 812    }
 813
 814    if (ctx->Driver.TexParameter && need_update) {
 815       GLfloat fparams[4];
 816       fparams[0] = INT_TO_FLOAT(params[0]);
 817       if (pname == GL_TEXTURE_BORDER_COLOR ||
 818           pname == GL_TEXTURE_CROP_RECT_OES) {
 819          fparams[1] = INT_TO_FLOAT(params[1]);
 820          fparams[2] = INT_TO_FLOAT(params[2]);
 821          fparams[3] = INT_TO_FLOAT(params[3]);
 822       }
 823       ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
 824    }
 825 }
 826
 827
 828 /**
 829  * Set tex parameter to integer value(s).  Primarily intended to set
 830  * integer-valued texture border color (for integer-valued textures).
 831  * New in GL 3.0.
 832  */
 833 void GLAPIENTRY
 834 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 835 {
 836    struct gl_texture_object *texObj;
 837    GET_CURRENT_CONTEXT(ctx);
 838    ASSERT_OUTSIDE_BEGIN_END(ctx);
 839
 840    texObj = get_texobj(ctx, target, GL_FALSE);
 841    if (!texObj)
 842       return;
 843
 844    switch (pname) {
 845    case GL_TEXTURE_BORDER_COLOR:
 846       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 847       /* set the integer-valued border color */
 848       COPY_4V(texObj->Sampler.BorderColor.i, params);
 849       break;
 850    default:
 851       _mesa_TexParameteriv(target, pname, params);
 852       break;
 853    }
 854    /* XXX no driver hook for TexParameterIiv() yet */
 855 }
 856
 857
 858 /**
 859  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 860  * uint-valued texture border color (for integer-valued textures).
 861  * New in GL 3.0
 862  */
 863 void GLAPIENTRY
 864 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 865 {
 866    struct gl_texture_object *texObj;
 867    GET_CURRENT_CONTEXT(ctx);
 868    ASSERT_OUTSIDE_BEGIN_END(ctx);
 869
 870    texObj = get_texobj(ctx, target, GL_FALSE);
 871    if (!texObj)
 872       return;
 873
 874    switch (pname) {
 875    case GL_TEXTURE_BORDER_COLOR:
 876       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 877       /* set the unsigned integer-valued border color */
 878       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 879       break;
 880    default:
 881       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 882       break;
 883    }
 884    /* XXX no driver hook for TexParameterIuiv() yet */
 885 }
 886
 887
 888 void GLAPIENTRY
 889 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
 890                               GLenum pname, GLfloat *params )
 891 {
 892    GLint iparam;
 893    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
 894    *params = (GLfloat) iparam;
 895 }
 896
 897
 898 void GLAPIENTRY
 899 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
 900                               GLenum pname, GLint *params )
 901 {
 902    const struct gl_texture_unit *texUnit;
 903    struct gl_texture_object *texObj;
 904    const struct gl_texture_image *img = NULL;
 905    GLint maxLevels;
 906    gl_format texFormat;
 907    GET_CURRENT_CONTEXT(ctx);
 908    ASSERT_OUTSIDE_BEGIN_END(ctx);
 909
 910    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 911       _mesa_error(ctx, GL_INVALID_OPERATION,
 912                   "glGetTexLevelParameteriv(current unit)");
 913       return;
 914    }
 915
 916    texUnit = _mesa_get_current_tex_unit(ctx);
 917
 918    /* this will catch bad target values */
 919    maxLevels = _mesa_max_texture_levels(ctx, target);
 920    if (maxLevels == 0) {
 921       _mesa_error(ctx, GL_INVALID_ENUM,
 922                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
 923       return;
 924    }
 925
 926    if (level < 0 || level >= maxLevels) {
 927       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
 928       return;
 929    }
 930
 931    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 932
 933    img = _mesa_select_tex_image(ctx, texObj, target, level);
 934    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
 935       /* undefined texture image */
 936       if (pname == GL_TEXTURE_COMPONENTS)
 937          *params = 1;
 938       else
 939          *params = 0;
 940       return;
 941    }
 942
 943    texFormat = img->TexFormat;
 944
 945    switch (pname) {
 946       case GL_TEXTURE_WIDTH:
 947          *params = img->Width;
 948          break;
 949       case GL_TEXTURE_HEIGHT:
 950          *params = img->Height;
 951          break;
 952       case GL_TEXTURE_DEPTH:
 953          *params = img->Depth;
 954          break;
 955       case GL_TEXTURE_INTERNAL_FORMAT:
 956          if (_mesa_is_format_compressed(texFormat)) {
 957             /* need to return the actual compressed format */
 958             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
 959          }
 960          else {
 961             /* If the true internal format is not compressed but the user
 962              * requested a generic compressed format, we have to return the
 963              * generic base format that matches.
 964              *
 965              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
 966              *
 967              *     "If no specific compressed format is available,
 968              *     internalformat is instead replaced by the corresponding base
 969              *     internal format."
 970              *
 971              * Otherwise just return the user's requested internal format
 972              */
 973             const GLenum f =
 974                _mesa_gl_compressed_format_base_format(img->InternalFormat);
 975
 976             *params = (f != 0) ? f : img->InternalFormat;
 977          }
 978          break;
 979       case GL_TEXTURE_BORDER:
 980          *params = img->Border;
 981          break;
 982       case GL_TEXTURE_RED_SIZE:
 983       case GL_TEXTURE_GREEN_SIZE:
 984       case GL_TEXTURE_BLUE_SIZE:
 985       case GL_TEXTURE_ALPHA_SIZE:
 986          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
 987             *params = _mesa_get_format_bits(texFormat, pname);
 988          else
 989             *params = 0;
 990          break;
 991       case GL_TEXTURE_INTENSITY_SIZE:
 992       case GL_TEXTURE_LUMINANCE_SIZE:
 993          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
 994             *params = _mesa_get_format_bits(texFormat, pname);
 995             if (*params == 0) {
 996                /* intensity or luminance is probably stored as RGB[A] */
 997                *params = MIN2(_mesa_get_format_bits(texFormat,
 998                                                     GL_TEXTURE_RED_SIZE),
 999                               _mesa_get_format_bits(texFormat,
1000                                                     GL_TEXTURE_GREEN_SIZE));
1001             }
1002          }
1003          else {
1004             *params = 0;
1005          }
1006          break;
1007       case GL_TEXTURE_DEPTH_SIZE_ARB:
1008          if (!ctx->Extensions.ARB_depth_texture)
1009             goto invalid_pname;
1010          *params = _mesa_get_format_bits(texFormat, pname);
1011          break;
1012       case GL_TEXTURE_STENCIL_SIZE_EXT:
1013          if (!ctx->Extensions.EXT_packed_depth_stencil &&
1014              !ctx->Extensions.ARB_framebuffer_object)
1015             goto invalid_pname;
1016          *params = _mesa_get_format_bits(texFormat, pname);
1017          break;
1018       case GL_TEXTURE_SHARED_SIZE:
1019          if (ctx->VersionMajor < 3 &&
1020              !ctx->Extensions.EXT_texture_shared_exponent)
1021             goto invalid_pname;
1022          *params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0;
1023          break;
1024
1025       /* GL_ARB_texture_compression */
1026       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1027          if (_mesa_is_format_compressed(texFormat) &&
1028              !_mesa_is_proxy_texture(target)) {
1029             *params = _mesa_format_image_size(texFormat, img->Width,
1030                                               img->Height, img->Depth);
1031          }
1032          else {
1033             _mesa_error(ctx, GL_INVALID_OPERATION,
1034                         "glGetTexLevelParameter[if]v(pname)");
1035          }
1036          break;
1037       case GL_TEXTURE_COMPRESSED:
1038          *params = (GLint) _mesa_is_format_compressed(texFormat);
1039          break;
1040
1041       /* GL_ARB_texture_float */
1042       case GL_TEXTURE_RED_TYPE_ARB:
1043       case GL_TEXTURE_GREEN_TYPE_ARB:
1044       case GL_TEXTURE_BLUE_TYPE_ARB:
1045       case GL_TEXTURE_ALPHA_TYPE_ARB:
1046       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1047       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1048       case GL_TEXTURE_DEPTH_TYPE_ARB:
1049          if (!ctx->Extensions.ARB_texture_float)
1050             goto invalid_pname;
1051          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1052             *params = _mesa_get_format_datatype(texFormat);
1053          else
1054             *params = GL_NONE;
1055          break;
1056
1057       default:
1058          goto invalid_pname;
1059    }
1060
1061    /* no error if we get here */
1062    return;
1063
1064 invalid_pname:
1065    _mesa_error(ctx, GL_INVALID_ENUM,
1066                "glGetTexLevelParameter[if]v(pname=%s)",
1067                _mesa_lookup_enum_by_nr(pname));
1068 }
1069
1070
1071
1072 void GLAPIENTRY
1073 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1074 {
1075    struct gl_texture_object *obj;
1076    GET_CURRENT_CONTEXT(ctx);
1077    ASSERT_OUTSIDE_BEGIN_END(ctx);
1078
1079    obj = get_texobj(ctx, target, GL_TRUE);
1080    if (!obj)
1081       return;
1082
1083    _mesa_lock_texture(ctx, obj);
1084    switch (pname) {
1085       case GL_TEXTURE_MAG_FILTER:
1086          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1087          break;
1088       case GL_TEXTURE_MIN_FILTER:
1089          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1090          break;
1091       case GL_TEXTURE_WRAP_S:
1092          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1093          break;
1094       case GL_TEXTURE_WRAP_T:
1095          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1096          break;
1097       case GL_TEXTURE_WRAP_R:
1098          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1099          break;
1100       case GL_TEXTURE_BORDER_COLOR:
1101          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1102             _mesa_update_state_locked(ctx);
1103          if (ctx->Color._ClampFragmentColor) {
1104             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1105             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1106             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1107             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1108          }
1109          else {
1110             params[0] = obj->Sampler.BorderColor.f[0];
1111             params[1] = obj->Sampler.BorderColor.f[1];
1112             params[2] = obj->Sampler.BorderColor.f[2];
1113             params[3] = obj->Sampler.BorderColor.f[3];
1114          }
1115          break;
1116       case GL_TEXTURE_RESIDENT:
1117          *params = 1.0F;
1118          break;
1119       case GL_TEXTURE_PRIORITY:
1120          *params = obj->Priority;
1121          break;
1122       case GL_TEXTURE_MIN_LOD:
1123          *params = obj->Sampler.MinLod;
1124          break;
1125       case GL_TEXTURE_MAX_LOD:
1126          *params = obj->Sampler.MaxLod;
1127          break;
1128       case GL_TEXTURE_BASE_LEVEL:
1129          *params = (GLfloat) obj->BaseLevel;
1130          break;
1131       case GL_TEXTURE_MAX_LEVEL:
1132          *params = (GLfloat) obj->MaxLevel;
1133          break;
1134       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1135          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1136             goto invalid_pname;
1137          *params = obj->Sampler.MaxAnisotropy;
1138          break;
1139       case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1140          if (!ctx->Extensions.ARB_shadow_ambient)
1141             goto invalid_pname;
1142          *params = obj->Sampler.CompareFailValue;
1143          break;
1144       case GL_GENERATE_MIPMAP_SGIS:
1145          *params = (GLfloat) obj->GenerateMipmap;
1146          break;
1147       case GL_TEXTURE_COMPARE_MODE_ARB:
1148          if (!ctx->Extensions.ARB_shadow)
1149             goto invalid_pname;
1150          *params = (GLfloat) obj->Sampler.CompareMode;
1151          break;
1152       case GL_TEXTURE_COMPARE_FUNC_ARB:
1153          if (!ctx->Extensions.ARB_shadow)
1154             goto invalid_pname;
1155          *params = (GLfloat) obj->Sampler.CompareFunc;
1156          break;
1157       case GL_DEPTH_TEXTURE_MODE_ARB:
1158          if (!ctx->Extensions.ARB_depth_texture)
1159             goto invalid_pname;
1160          *params = (GLfloat) obj->Sampler.DepthMode;
1161          break;
1162       case GL_TEXTURE_LOD_BIAS:
1163          *params = obj->Sampler.LodBias;
1164          break;
1165 #if FEATURE_OES_draw_texture
1166       case GL_TEXTURE_CROP_RECT_OES:
1167          params[0] = obj->CropRect[0];
1168          params[1] = obj->CropRect[1];
1169          params[2] = obj->CropRect[2];
1170          params[3] = obj->CropRect[3];
1171          break;
1172 #endif
1173
1174       case GL_TEXTURE_SWIZZLE_R_EXT:
1175       case GL_TEXTURE_SWIZZLE_G_EXT:
1176       case GL_TEXTURE_SWIZZLE_B_EXT:
1177       case GL_TEXTURE_SWIZZLE_A_EXT:
1178          if (!ctx->Extensions.EXT_texture_swizzle)
1179             goto invalid_pname;
1180          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1181          break;
1182
1183       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1184          if (!ctx->Extensions.EXT_texture_swizzle) {
1185             goto invalid_pname;
1186          }
1187          else {
1188             GLuint comp;
1189             for (comp = 0; comp < 4; comp++) {
1190                params[comp] = (GLfloat) obj->Swizzle[comp];
1191             }
1192          }
1193          break;
1194
1195       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1196          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1197             goto invalid_pname;
1198          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1199          break;
1200
1201       case GL_TEXTURE_IMMUTABLE_FORMAT:
1202          if (!ctx->Extensions.ARB_texture_storage)
1203             goto invalid_pname;
1204          *params = (GLfloat) obj->Immutable;
1205          break;
1206
1207       default:
1208          goto invalid_pname;
1209    }
1210
1211    /* no error if we get here */
1212    _mesa_unlock_texture(ctx, obj);
1213    return;
1214
1215 invalid_pname:
1216    _mesa_unlock_texture(ctx, obj);
1217    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1218 }
1219
1220
1221 void GLAPIENTRY
1222 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1223 {
1224    struct gl_texture_object *obj;
1225    GET_CURRENT_CONTEXT(ctx);
1226    ASSERT_OUTSIDE_BEGIN_END(ctx);
1227
1228    obj = get_texobj(ctx, target, GL_TRUE);
1229    if (!obj)
1230       return;
1231
1232    _mesa_lock_texture(ctx, obj);
1233    switch (pname) {
1234       case GL_TEXTURE_MAG_FILTER:
1235          *params = (GLint) obj->Sampler.MagFilter;
1236          break;;
1237       case GL_TEXTURE_MIN_FILTER:
1238          *params = (GLint) obj->Sampler.MinFilter;
1239          break;;
1240       case GL_TEXTURE_WRAP_S:
1241          *params = (GLint) obj->Sampler.WrapS;
1242          break;;
1243       case GL_TEXTURE_WRAP_T:
1244          *params = (GLint) obj->Sampler.WrapT;
1245          break;;
1246       case GL_TEXTURE_WRAP_R:
1247          *params = (GLint) obj->Sampler.WrapR;
1248          break;;
1249       case GL_TEXTURE_BORDER_COLOR:
1250          {
1251             GLfloat b[4];
1252             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1253             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1254             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1255             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1256             params[0] = FLOAT_TO_INT(b[0]);
1257             params[1] = FLOAT_TO_INT(b[1]);
1258             params[2] = FLOAT_TO_INT(b[2]);
1259             params[3] = FLOAT_TO_INT(b[3]);
1260          }
1261          break;;
1262       case GL_TEXTURE_RESIDENT:
1263          *params = 1;
1264          break;;
1265       case GL_TEXTURE_PRIORITY:
1266          *params = FLOAT_TO_INT(obj->Priority);
1267          break;;
1268       case GL_TEXTURE_MIN_LOD:
1269          *params = (GLint) obj->Sampler.MinLod;
1270          break;;
1271       case GL_TEXTURE_MAX_LOD:
1272          *params = (GLint) obj->Sampler.MaxLod;
1273          break;;
1274       case GL_TEXTURE_BASE_LEVEL:
1275          *params = obj->BaseLevel;
1276          break;;
1277       case GL_TEXTURE_MAX_LEVEL:
1278          *params = obj->MaxLevel;
1279          break;;
1280       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1281          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1282             goto invalid_pname;
1283          *params = (GLint) obj->Sampler.MaxAnisotropy;
1284          break;
1285       case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1286          if (!ctx->Extensions.ARB_shadow_ambient)
1287             goto invalid_pname;
1288          *params = (GLint) FLOAT_TO_INT(obj->Sampler.CompareFailValue);
1289          break;
1290       case GL_GENERATE_MIPMAP_SGIS:
1291          *params = (GLint) obj->GenerateMipmap;
1292          break;
1293       case GL_TEXTURE_COMPARE_MODE_ARB:
1294          if (!ctx->Extensions.ARB_shadow)
1295             goto invalid_pname;
1296          *params = (GLint) obj->Sampler.CompareMode;
1297          break;
1298       case GL_TEXTURE_COMPARE_FUNC_ARB:
1299          if (!ctx->Extensions.ARB_shadow)
1300             goto invalid_pname;
1301          *params = (GLint) obj->Sampler.CompareFunc;
1302          break;
1303       case GL_DEPTH_TEXTURE_MODE_ARB:
1304          if (!ctx->Extensions.ARB_depth_texture)
1305             goto invalid_pname;
1306          *params = (GLint) obj->Sampler.DepthMode;
1307          break;
1308       case GL_TEXTURE_LOD_BIAS:
1309          *params = (GLint) obj->Sampler.LodBias;
1310          break;
1311 #if FEATURE_OES_draw_texture
1312       case GL_TEXTURE_CROP_RECT_OES:
1313          params[0] = obj->CropRect[0];
1314          params[1] = obj->CropRect[1];
1315          params[2] = obj->CropRect[2];
1316          params[3] = obj->CropRect[3];
1317          break;
1318 #endif
1319       case GL_TEXTURE_SWIZZLE_R_EXT:
1320       case GL_TEXTURE_SWIZZLE_G_EXT:
1321       case GL_TEXTURE_SWIZZLE_B_EXT:
1322       case GL_TEXTURE_SWIZZLE_A_EXT:
1323          if (!ctx->Extensions.EXT_texture_swizzle)
1324             goto invalid_pname;
1325          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1326          break;
1327
1328       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1329          if (!ctx->Extensions.EXT_texture_swizzle)
1330             goto invalid_pname;
1331          COPY_4V(params, obj->Swizzle);
1332          break;
1333
1334       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1335          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1336             goto invalid_pname;
1337          *params = (GLint) obj->Sampler.CubeMapSeamless;
1338          break;
1339
1340       case GL_TEXTURE_IMMUTABLE_FORMAT:
1341          if (!ctx->Extensions.ARB_texture_storage)
1342             goto invalid_pname;
1343          *params = (GLint) obj->Immutable;
1344          break;
1345
1346       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1347          if (!ctx->Extensions.OES_EGL_image_external)
1348             goto invalid_pname;
1349          *params = obj->RequiredTextureImageUnits;
1350          break;
1351
1352       default:
1353          goto invalid_pname;
1354    }
1355
1356    /* no error if we get here */
1357    _mesa_unlock_texture(ctx, obj);
1358    return;
1359
1360 invalid_pname:
1361    _mesa_unlock_texture(ctx, obj);
1362    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1363 }
1364
1365
1366 /** New in GL 3.0 */
1367 void GLAPIENTRY
1368 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1369 {
1370    struct gl_texture_object *texObj;
1371    GET_CURRENT_CONTEXT(ctx);
1372    ASSERT_OUTSIDE_BEGIN_END(ctx);
1373
1374    texObj = get_texobj(ctx, target, GL_TRUE);
1375    if (!texObj)
1376       return;
1377
1378    switch (pname) {
1379    case GL_TEXTURE_BORDER_COLOR:
1380       COPY_4V(params, texObj->Sampler.BorderColor.i);
1381       break;
1382    default:
1383       _mesa_GetTexParameteriv(target, pname, params);
1384    }
1385 }
1386
1387
1388 /** New in GL 3.0 */
1389 void GLAPIENTRY
1390 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1391 {
1392    struct gl_texture_object *texObj;
1393    GET_CURRENT_CONTEXT(ctx);
1394    ASSERT_OUTSIDE_BEGIN_END(ctx);
1395
1396    texObj = get_texobj(ctx, target, GL_TRUE);
1397    if (!texObj)
1398       return;
1399
1400    switch (pname) {
1401    case GL_TEXTURE_BORDER_COLOR:
1402       COPY_4V(params, texObj->Sampler.BorderColor.i);
1403       break;
1404    default:
1405       {
1406          GLint ip[4];
1407          _mesa_GetTexParameteriv(target, pname, ip);
1408          params[0] = ip[0];
1409          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1410              pname == GL_TEXTURE_CROP_RECT_OES) {
1411             params[1] = ip[1];
1412             params[2] = ip[2];
1413             params[3] = ip[3];
1414          }
1415       }
1416    }
1417 }