src/mesa/main/texparam.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /**
  27  * \file texparam.c
  28  *
  29  * glTexParameter-related functions
  30  */
  31
  32 #include <stdbool.h>
  33 #include "main/glheader.h"
  34 #include "main/blend.h"
  35 #include "main/colormac.h"
  36 #include "main/context.h"
  37 #include "main/enums.h"
  38 #include "main/formats.h"
  39 #include "main/glformats.h"
  40 #include "main/macros.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  */
  55 static GLboolean
  56 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
  57 {
  58    const struct gl_extensions * const e = & ctx->Extensions;
  59    const bool is_desktop_gl = _mesa_is_desktop_gl(ctx);
  60    bool supported;
  61
  62    switch (wrap) {
  63    case GL_CLAMP:
  64       /* GL_CLAMP was removed in the core profile, and it has never existed in
  65        * OpenGL ES.
  66        */
  67       supported = (ctx->API == API_OPENGL_COMPAT)
  68          && (target != GL_TEXTURE_EXTERNAL_OES);
  69       break;
  70
  71    case GL_CLAMP_TO_EDGE:
  72       supported = true;
  73       break;
  74
  75    case GL_CLAMP_TO_BORDER:
  76       supported = is_desktop_gl && e->ARB_texture_border_clamp
  77          && (target != GL_TEXTURE_EXTERNAL_OES);
  78       break;
  79
  80    case GL_REPEAT:
  81    case GL_MIRRORED_REPEAT:
  82       supported = (target != GL_TEXTURE_RECTANGLE_NV)
  83          && (target != GL_TEXTURE_EXTERNAL_OES);
  84       break;
  85
  86    case GL_MIRROR_CLAMP_EXT:
  87       supported = is_desktop_gl
  88          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  89          && (target != GL_TEXTURE_RECTANGLE_NV)
  90          && (target != GL_TEXTURE_EXTERNAL_OES);
  91       break;
  92
  93    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  94       supported = is_desktop_gl
  95          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp || e->ARB_texture_mirror_clamp_to_edge)
  96          && (target != GL_TEXTURE_RECTANGLE_NV)
  97          && (target != GL_TEXTURE_EXTERNAL_OES);
  98       break;
  99
 100    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
 101       supported = is_desktop_gl && e->EXT_texture_mirror_clamp
 102          && (target != GL_TEXTURE_RECTANGLE_NV)
 103          && (target != GL_TEXTURE_EXTERNAL_OES);
 104       break;
 105
 106    default:
 107       supported = false;
 108       break;
 109    }
 110
 111    if (!supported)
 112       _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
 113
 114    return supported;
 115 }
 116
 117
 118 /**
 119  * Get current texture object for given target.
 120  * Return NULL if any error (and record the error).
 121  * Note that this is different from _mesa_get_current_tex_object() in that
 122  * proxy targets are not accepted.
 123  * Only the glGetTexLevelParameter() functions accept proxy targets.
 124  */
 125 static struct gl_texture_object *
 126 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
 127 {
 128    struct gl_texture_unit *texUnit;
 129    int targetIndex;
 130
 131    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 132       _mesa_error(ctx, GL_INVALID_OPERATION,
 133                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 134       return NULL;
 135    }
 136
 137    texUnit = _mesa_get_current_tex_unit(ctx);
 138
 139    targetIndex = _mesa_tex_target_to_index(ctx, target);
 140    if (targetIndex < 0 || targetIndex == TEXTURE_BUFFER_INDEX) {
 141       _mesa_error(ctx, GL_INVALID_ENUM,
 142                   "gl%sTexParameter(target)", get ? "Get" : "");
 143       return NULL;
 144    }
 145    assert(targetIndex < NUM_TEXTURE_TARGETS);
 146
 147    return texUnit->CurrentTex[targetIndex];
 148 }
 149
 150
 151 /**
 152  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 153  * \return -1 if error.
 154  */
 155 static GLint
 156 comp_to_swizzle(GLenum comp)
 157 {
 158    switch (comp) {
 159    case GL_RED:
 160       return SWIZZLE_X;
 161    case GL_GREEN:
 162       return SWIZZLE_Y;
 163    case GL_BLUE:
 164       return SWIZZLE_Z;
 165    case GL_ALPHA:
 166       return SWIZZLE_W;
 167    case GL_ZERO:
 168       return SWIZZLE_ZERO;
 169    case GL_ONE:
 170       return SWIZZLE_ONE;
 171    default:
 172       return -1;
 173    }
 174 }
 175
 176
 177 static void
 178 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 179 {
 180    ASSERT(comp < 4);
 181    ASSERT(swz <= SWIZZLE_NIL);
 182    {
 183       GLuint mask = 0x7 << (3 * comp);
 184       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 185       *swizzle = s;
 186    }
 187 }
 188
 189
 190 /**
 191  * This is called just prior to changing any texture object state which
 192  * will not effect texture completeness.
 193  */
 194 static inline void
 195 flush(struct gl_context *ctx)
 196 {
 197    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 198 }
 199
 200
 201 /**
 202  * This is called just prior to changing any texture object state which
 203  * can effect texture completeness (texture base level, max level).
 204  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 205  * state flag and then mark the texture object as 'incomplete' so that any
 206  * per-texture derived state gets recomputed.
 207  */
 208 static inline void
 209 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 210 {
 211    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 212    _mesa_dirty_texobj(ctx, texObj);
 213 }
 214
 215
 216 static GLboolean
 217 target_allows_setting_sampler_parameters(GLenum target)
 218 {
 219    switch (target) {
 220    case GL_TEXTURE_2D_MULTISAMPLE:
 221    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 222       return GL_FALSE;
 223
 224    default:
 225       return GL_TRUE;
 226    }
 227 }
 228
 229
 230 /**
 231  * Set an integer-valued texture parameter
 232  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 233  */
 234 static GLboolean
 235 set_tex_parameteri(struct gl_context *ctx,
 236                    struct gl_texture_object *texObj,
 237                    GLenum pname, const GLint *params)
 238 {
 239    switch (pname) {
 240    case GL_TEXTURE_MIN_FILTER:
 241       if (!target_allows_setting_sampler_parameters(texObj->Target))
 242          goto invalid_operation;
 243
 244       if (texObj->Sampler.MinFilter == params[0])
 245          return GL_FALSE;
 246       switch (params[0]) {
 247       case GL_NEAREST:
 248       case GL_LINEAR:
 249          flush(ctx);
 250          texObj->Sampler.MinFilter = params[0];
 251          return GL_TRUE;
 252       case GL_NEAREST_MIPMAP_NEAREST:
 253       case GL_LINEAR_MIPMAP_NEAREST:
 254       case GL_NEAREST_MIPMAP_LINEAR:
 255       case GL_LINEAR_MIPMAP_LINEAR:
 256          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 257              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 258             flush(ctx);
 259             texObj->Sampler.MinFilter = params[0];
 260             return GL_TRUE;
 261          }
 262          /* fall-through */
 263       default:
 264          goto invalid_param;
 265       }
 266       return GL_FALSE;
 267
 268    case GL_TEXTURE_MAG_FILTER:
 269       if (!target_allows_setting_sampler_parameters(texObj->Target))
 270          goto invalid_operation;
 271
 272       if (texObj->Sampler.MagFilter == params[0])
 273          return GL_FALSE;
 274       switch (params[0]) {
 275       case GL_NEAREST:
 276       case GL_LINEAR:
 277          flush(ctx); /* does not effect completeness */
 278          texObj->Sampler.MagFilter = params[0];
 279          return GL_TRUE;
 280       default:
 281          goto invalid_param;
 282       }
 283       return GL_FALSE;
 284
 285    case GL_TEXTURE_WRAP_S:
 286       if (!target_allows_setting_sampler_parameters(texObj->Target))
 287          goto invalid_operation;
 288
 289       if (texObj->Sampler.WrapS == params[0])
 290          return GL_FALSE;
 291       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 292          flush(ctx);
 293          texObj->Sampler.WrapS = params[0];
 294          return GL_TRUE;
 295       }
 296       return GL_FALSE;
 297
 298    case GL_TEXTURE_WRAP_T:
 299       if (!target_allows_setting_sampler_parameters(texObj->Target))
 300          goto invalid_operation;
 301
 302       if (texObj->Sampler.WrapT == params[0])
 303          return GL_FALSE;
 304       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 305          flush(ctx);
 306          texObj->Sampler.WrapT = params[0];
 307          return GL_TRUE;
 308       }
 309       return GL_FALSE;
 310
 311    case GL_TEXTURE_WRAP_R:
 312       if (!target_allows_setting_sampler_parameters(texObj->Target))
 313          goto invalid_operation;
 314
 315       if (texObj->Sampler.WrapR == params[0])
 316          return GL_FALSE;
 317       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 318          flush(ctx);
 319          texObj->Sampler.WrapR = params[0];
 320          return GL_TRUE;
 321       }
 322       return GL_FALSE;
 323
 324    case GL_TEXTURE_BASE_LEVEL:
 325       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 326          goto invalid_pname;
 327
 328       if (texObj->BaseLevel == params[0])
 329          return GL_FALSE;
 330
 331       if ((texObj->Target == GL_TEXTURE_2D_MULTISAMPLE ||
 332            texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) && params[0] != 0)
 333          goto invalid_operation;
 334
 335       if (params[0] < 0 ||
 336           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
 337          _mesa_error(ctx, GL_INVALID_VALUE,
 338                      "glTexParameter(param=%d)", params[0]);
 339          return GL_FALSE;
 340       }
 341       incomplete(ctx, texObj);
 342
 343       /** See note about ARB_texture_storage below */
 344       if (texObj->Immutable)
 345          texObj->BaseLevel = MIN2(texObj->ImmutableLevels - 1, params[0]);
 346       else
 347          texObj->BaseLevel = params[0];
 348
 349       return GL_TRUE;
 350
 351    case GL_TEXTURE_MAX_LEVEL:
 352       if (texObj->MaxLevel == params[0])
 353          return GL_FALSE;
 354
 355       if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
 356          _mesa_error(ctx, GL_INVALID_VALUE,
 357                      "glTexParameter(param=%d)", params[0]);
 358          return GL_FALSE;
 359       }
 360       incomplete(ctx, texObj);
 361
 362       /** From ARB_texture_storage:
 363        * However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then level_base is
 364        * clamped to the range [0, <levels> - 1] and level_max is then clamped to
 365        * the range [level_base, <levels> - 1], where <levels> is the parameter
 366        * passed the call to TexStorage* for the texture object.
 367        */
 368       if (texObj->Immutable)
 369           texObj->MaxLevel = CLAMP(params[0], texObj->BaseLevel,
 370                                    texObj->ImmutableLevels - 1);
 371       else
 372          texObj->MaxLevel = params[0];
 373
 374       return GL_TRUE;
 375
 376    case GL_GENERATE_MIPMAP_SGIS:
 377       if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
 378          goto invalid_pname;
 379
 380       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 381          goto invalid_param;
 382       if (texObj->GenerateMipmap != params[0]) {
 383          /* no flush() */
 384          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 385          return GL_TRUE;
 386       }
 387       return GL_FALSE;
 388
 389    case GL_TEXTURE_COMPARE_MODE_ARB:
 390       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 391           || _mesa_is_gles3(ctx)) {
 392
 393          if (!target_allows_setting_sampler_parameters(texObj->Target))
 394             goto invalid_operation;
 395
 396          if (texObj->Sampler.CompareMode == params[0])
 397             return GL_FALSE;
 398          if (params[0] == GL_NONE ||
 399              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 400             flush(ctx);
 401             texObj->Sampler.CompareMode = params[0];
 402             return GL_TRUE;
 403          }
 404          goto invalid_param;
 405       }
 406       goto invalid_pname;
 407
 408    case GL_TEXTURE_COMPARE_FUNC_ARB:
 409       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 410           || _mesa_is_gles3(ctx)) {
 411
 412          if (!target_allows_setting_sampler_parameters(texObj->Target))
 413             goto invalid_operation;
 414
 415          if (texObj->Sampler.CompareFunc == params[0])
 416             return GL_FALSE;
 417          switch (params[0]) {
 418          case GL_LEQUAL:
 419          case GL_GEQUAL:
 420          case GL_EQUAL:
 421          case GL_NOTEQUAL:
 422          case GL_LESS:
 423          case GL_GREATER:
 424          case GL_ALWAYS:
 425          case GL_NEVER:
 426             flush(ctx);
 427             texObj->Sampler.CompareFunc = params[0];
 428             return GL_TRUE;
 429          default:
 430             goto invalid_param;
 431          }
 432       }
 433       goto invalid_pname;
 434
 435    case GL_DEPTH_TEXTURE_MODE_ARB:
 436       /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has never
 437        * existed in OpenGL ES.
 438        */
 439       if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_texture) {
 440          if (texObj->DepthMode == params[0])
 441             return GL_FALSE;
 442          if (params[0] == GL_LUMINANCE ||
 443              params[0] == GL_INTENSITY ||
 444              params[0] == GL_ALPHA ||
 445              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 446             flush(ctx);
 447             texObj->DepthMode = params[0];
 448             return GL_TRUE;
 449          }
 450          goto invalid_param;
 451       }
 452       goto invalid_pname;
 453
 454    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 455       if (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_stencil_texturing) {
 456          bool stencil = params[0] == GL_STENCIL_INDEX;
 457          if (!stencil && params[0] != GL_DEPTH_COMPONENT)
 458             goto invalid_param;
 459
 460          if (texObj->StencilSampling == stencil)
 461             return GL_FALSE;
 462
 463          texObj->StencilSampling = stencil;
 464          return GL_TRUE;
 465       }
 466       goto invalid_pname;
 467
 468    case GL_TEXTURE_CROP_RECT_OES:
 469       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 470          goto invalid_pname;
 471
 472       texObj->CropRect[0] = params[0];
 473       texObj->CropRect[1] = params[1];
 474       texObj->CropRect[2] = params[2];
 475       texObj->CropRect[3] = params[3];
 476       return GL_TRUE;
 477
 478    case GL_TEXTURE_SWIZZLE_R_EXT:
 479    case GL_TEXTURE_SWIZZLE_G_EXT:
 480    case GL_TEXTURE_SWIZZLE_B_EXT:
 481    case GL_TEXTURE_SWIZZLE_A_EXT:
 482       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 483           || _mesa_is_gles3(ctx)) {
 484          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 485          const GLint swz = comp_to_swizzle(params[0]);
 486          if (swz < 0) {
 487             _mesa_error(ctx, GL_INVALID_OPERATION,
 488                         "glTexParameter(swizzle 0x%x)", params[0]);
 489             return GL_FALSE;
 490          }
 491          ASSERT(comp < 4);
 492
 493          flush(ctx);
 494          texObj->Swizzle[comp] = params[0];
 495          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 496          return GL_TRUE;
 497       }
 498       goto invalid_pname;
 499
 500    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 501       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 502           || _mesa_is_gles3(ctx)) {
 503          GLuint comp;
 504          flush(ctx);
 505          for (comp = 0; comp < 4; comp++) {
 506             const GLint swz = comp_to_swizzle(params[comp]);
 507             if (swz >= 0) {
 508                texObj->Swizzle[comp] = params[comp];
 509                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 510             }
 511             else {
 512                _mesa_error(ctx, GL_INVALID_OPERATION,
 513                            "glTexParameter(swizzle 0x%x)", params[comp]);
 514                return GL_FALSE;
 515             }
 516          }
 517          return GL_TRUE;
 518       }
 519       goto invalid_pname;
 520
 521    case GL_TEXTURE_SRGB_DECODE_EXT:
 522       if (_mesa_is_desktop_gl(ctx)
 523           && ctx->Extensions.EXT_texture_sRGB_decode) {
 524          GLenum decode = params[0];
 525
 526          if (!target_allows_setting_sampler_parameters(texObj->Target))
 527             goto invalid_operation;
 528
 529          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 530             if (texObj->Sampler.sRGBDecode != decode) {
 531                flush(ctx);
 532                texObj->Sampler.sRGBDecode = decode;
 533             }
 534             return GL_TRUE;
 535          }
 536       }
 537       goto invalid_pname;
 538
 539    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 540       if (_mesa_is_desktop_gl(ctx)
 541           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 542          GLenum param = params[0];
 543
 544          if (!target_allows_setting_sampler_parameters(texObj->Target))
 545             goto invalid_operation;
 546
 547          if (param != GL_TRUE && param != GL_FALSE) {
 548             goto invalid_param;
 549          }
 550          if (param != texObj->Sampler.CubeMapSeamless) {
 551             flush(ctx);
 552             texObj->Sampler.CubeMapSeamless = param;
 553          }
 554          return GL_TRUE;
 555       }
 556       goto invalid_pname;
 557
 558    default:
 559       goto invalid_pname;
 560    }
 561
 562 invalid_pname:
 563    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 564                _mesa_lookup_enum_by_nr(pname));
 565    return GL_FALSE;
 566
 567 invalid_param:
 568    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 569                _mesa_lookup_enum_by_nr(params[0]));
 570    return GL_FALSE;
 571
 572 invalid_operation:
 573    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 574                _mesa_lookup_enum_by_nr(pname));
 575    return GL_FALSE;
 576 }
 577
 578
 579 /**
 580  * Set a float-valued texture parameter
 581  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 582  */
 583 static GLboolean
 584 set_tex_parameterf(struct gl_context *ctx,
 585                    struct gl_texture_object *texObj,
 586                    GLenum pname, const GLfloat *params)
 587 {
 588    switch (pname) {
 589    case GL_TEXTURE_MIN_LOD:
 590       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 591          goto invalid_pname;
 592
 593       if (!target_allows_setting_sampler_parameters(texObj->Target))
 594          goto invalid_operation;
 595
 596       if (texObj->Sampler.MinLod == params[0])
 597          return GL_FALSE;
 598       flush(ctx);
 599       texObj->Sampler.MinLod = params[0];
 600       return GL_TRUE;
 601
 602    case GL_TEXTURE_MAX_LOD:
 603       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 604          goto invalid_pname;
 605
 606       if (!target_allows_setting_sampler_parameters(texObj->Target))
 607          goto invalid_operation;
 608
 609       if (texObj->Sampler.MaxLod == params[0])
 610          return GL_FALSE;
 611       flush(ctx);
 612       texObj->Sampler.MaxLod = params[0];
 613       return GL_TRUE;
 614
 615    case GL_TEXTURE_PRIORITY:
 616       if (ctx->API != API_OPENGL_COMPAT)
 617          goto invalid_pname;
 618
 619       flush(ctx);
 620       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 621       return GL_TRUE;
 622
 623    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 624       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 625          if (!target_allows_setting_sampler_parameters(texObj->Target))
 626             goto invalid_operation;
 627
 628          if (texObj->Sampler.MaxAnisotropy == params[0])
 629             return GL_FALSE;
 630          if (params[0] < 1.0) {
 631             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 632             return GL_FALSE;
 633          }
 634          flush(ctx);
 635          /* clamp to max, that's what NVIDIA does */
 636          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 637                                       ctx->Const.MaxTextureMaxAnisotropy);
 638          return GL_TRUE;
 639       }
 640       else {
 641          static GLuint count = 0;
 642          if (count++ < 10)
 643             goto invalid_pname;
 644       }
 645       return GL_FALSE;
 646
 647    case GL_TEXTURE_LOD_BIAS:
 648       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 649       if (_mesa_is_gles(ctx))
 650          goto invalid_pname;
 651
 652       if (!target_allows_setting_sampler_parameters(texObj->Target))
 653          goto invalid_operation;
 654
 655       if (texObj->Sampler.LodBias != params[0]) {
 656          flush(ctx);
 657          texObj->Sampler.LodBias = params[0];
 658          return GL_TRUE;
 659       }
 660       break;
 661
 662    case GL_TEXTURE_BORDER_COLOR:
 663       if (!_mesa_is_desktop_gl(ctx))
 664          goto invalid_pname;
 665
 666       if (!target_allows_setting_sampler_parameters(texObj->Target))
 667          goto invalid_operation;
 668
 669       flush(ctx);
 670       /* ARB_texture_float disables clamping */
 671       if (ctx->Extensions.ARB_texture_float) {
 672          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 673          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 674          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 675          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 676       } else {
 677          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 678          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 679          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 680          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 681       }
 682       return GL_TRUE;
 683
 684    default:
 685       goto invalid_pname;
 686    }
 687    return GL_FALSE;
 688
 689 invalid_pname:
 690    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 691                _mesa_lookup_enum_by_nr(pname));
 692    return GL_FALSE;
 693
 694 invalid_operation:
 695    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 696                _mesa_lookup_enum_by_nr(pname));
 697    return GL_FALSE;
 698 }
 699
 700
 701 void GLAPIENTRY
 702 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 703 {
 704    GLboolean need_update;
 705    struct gl_texture_object *texObj;
 706    GET_CURRENT_CONTEXT(ctx);
 707
 708    texObj = get_texobj(ctx, target, GL_FALSE);
 709    if (!texObj)
 710       return;
 711
 712    switch (pname) {
 713    case GL_TEXTURE_MIN_FILTER:
 714    case GL_TEXTURE_MAG_FILTER:
 715    case GL_TEXTURE_WRAP_S:
 716    case GL_TEXTURE_WRAP_T:
 717    case GL_TEXTURE_WRAP_R:
 718    case GL_TEXTURE_BASE_LEVEL:
 719    case GL_TEXTURE_MAX_LEVEL:
 720    case GL_GENERATE_MIPMAP_SGIS:
 721    case GL_TEXTURE_COMPARE_MODE_ARB:
 722    case GL_TEXTURE_COMPARE_FUNC_ARB:
 723    case GL_DEPTH_TEXTURE_MODE_ARB:
 724    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 725    case GL_TEXTURE_SRGB_DECODE_EXT:
 726    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 727    case GL_TEXTURE_SWIZZLE_R_EXT:
 728    case GL_TEXTURE_SWIZZLE_G_EXT:
 729    case GL_TEXTURE_SWIZZLE_B_EXT:
 730    case GL_TEXTURE_SWIZZLE_A_EXT:
 731       {
 732          GLint p[4];
 733          p[0] = (param > 0) ?
 734                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 735                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 736
 737          p[1] = p[2] = p[3] = 0;
 738          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 739       }
 740       break;
 741    default:
 742       {
 743          /* this will generate an error if pname is illegal */
 744          GLfloat p[4];
 745          p[0] = param;
 746          p[1] = p[2] = p[3] = 0.0F;
 747          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 748       }
 749    }
 750
 751    if (ctx->Driver.TexParameter && need_update) {
 752       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 753    }
 754 }
 755
 756
 757 void GLAPIENTRY
 758 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 759 {
 760    GLboolean need_update;
 761    struct gl_texture_object *texObj;
 762    GET_CURRENT_CONTEXT(ctx);
 763
 764    texObj = get_texobj(ctx, target, GL_FALSE);
 765    if (!texObj)
 766       return;
 767
 768    switch (pname) {
 769    case GL_TEXTURE_MIN_FILTER:
 770    case GL_TEXTURE_MAG_FILTER:
 771    case GL_TEXTURE_WRAP_S:
 772    case GL_TEXTURE_WRAP_T:
 773    case GL_TEXTURE_WRAP_R:
 774    case GL_TEXTURE_BASE_LEVEL:
 775    case GL_TEXTURE_MAX_LEVEL:
 776    case GL_GENERATE_MIPMAP_SGIS:
 777    case GL_TEXTURE_COMPARE_MODE_ARB:
 778    case GL_TEXTURE_COMPARE_FUNC_ARB:
 779    case GL_DEPTH_TEXTURE_MODE_ARB:
 780    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 781    case GL_TEXTURE_SRGB_DECODE_EXT:
 782    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 783       {
 784          /* convert float param to int */
 785          GLint p[4];
 786          p[0] = (GLint) params[0];
 787          p[1] = p[2] = p[3] = 0;
 788          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 789       }
 790       break;
 791    case GL_TEXTURE_CROP_RECT_OES:
 792       {
 793          /* convert float params to int */
 794          GLint iparams[4];
 795          iparams[0] = (GLint) params[0];
 796          iparams[1] = (GLint) params[1];
 797          iparams[2] = (GLint) params[2];
 798          iparams[3] = (GLint) params[3];
 799          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 800       }
 801       break;
 802    case GL_TEXTURE_SWIZZLE_R_EXT:
 803    case GL_TEXTURE_SWIZZLE_G_EXT:
 804    case GL_TEXTURE_SWIZZLE_B_EXT:
 805    case GL_TEXTURE_SWIZZLE_A_EXT:
 806    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 807       {
 808          GLint p[4] = {0, 0, 0, 0};
 809          p[0] = (GLint) params[0];
 810          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 811             p[1] = (GLint) params[1];
 812             p[2] = (GLint) params[2];
 813             p[3] = (GLint) params[3];
 814          }
 815          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 816       }
 817       break;
 818    default:
 819       /* this will generate an error if pname is illegal */
 820       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 821    }
 822
 823    if (ctx->Driver.TexParameter && need_update) {
 824       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 825    }
 826 }
 827
 828
 829 void GLAPIENTRY
 830 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 831 {
 832    GLboolean need_update;
 833    struct gl_texture_object *texObj;
 834    GET_CURRENT_CONTEXT(ctx);
 835
 836    texObj = get_texobj(ctx, target, GL_FALSE);
 837    if (!texObj)
 838       return;
 839
 840    switch (pname) {
 841    case GL_TEXTURE_MIN_LOD:
 842    case GL_TEXTURE_MAX_LOD:
 843    case GL_TEXTURE_PRIORITY:
 844    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 845    case GL_TEXTURE_LOD_BIAS:
 846    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 847       {
 848          GLfloat fparam[4];
 849          fparam[0] = (GLfloat) param;
 850          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 851          /* convert int param to float */
 852          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 853       }
 854       break;
 855    default:
 856       /* this will generate an error if pname is illegal */
 857       {
 858          GLint iparam[4];
 859          iparam[0] = param;
 860          iparam[1] = iparam[2] = iparam[3] = 0;
 861          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 862       }
 863    }
 864
 865    if (ctx->Driver.TexParameter && need_update) {
 866       GLfloat fparam = (GLfloat) param;
 867       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 868    }
 869 }
 870
 871
 872 void GLAPIENTRY
 873 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 874 {
 875    GLboolean need_update;
 876    struct gl_texture_object *texObj;
 877    GET_CURRENT_CONTEXT(ctx);
 878
 879    texObj = get_texobj(ctx, target, GL_FALSE);
 880    if (!texObj)
 881       return;
 882
 883    switch (pname) {
 884    case GL_TEXTURE_BORDER_COLOR:
 885       {
 886          /* convert int params to float */
 887          GLfloat fparams[4];
 888          fparams[0] = INT_TO_FLOAT(params[0]);
 889          fparams[1] = INT_TO_FLOAT(params[1]);
 890          fparams[2] = INT_TO_FLOAT(params[2]);
 891          fparams[3] = INT_TO_FLOAT(params[3]);
 892          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 893       }
 894       break;
 895    case GL_TEXTURE_MIN_LOD:
 896    case GL_TEXTURE_MAX_LOD:
 897    case GL_TEXTURE_PRIORITY:
 898    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 899    case GL_TEXTURE_LOD_BIAS:
 900    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 901       {
 902          /* convert int param to float */
 903          GLfloat fparams[4];
 904          fparams[0] = (GLfloat) params[0];
 905          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 906          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 907       }
 908       break;
 909    default:
 910       /* this will generate an error if pname is illegal */
 911       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 912    }
 913
 914    if (ctx->Driver.TexParameter && need_update) {
 915       GLfloat fparams[4];
 916       fparams[0] = INT_TO_FLOAT(params[0]);
 917       if (pname == GL_TEXTURE_BORDER_COLOR ||
 918           pname == GL_TEXTURE_CROP_RECT_OES) {
 919          fparams[1] = INT_TO_FLOAT(params[1]);
 920          fparams[2] = INT_TO_FLOAT(params[2]);
 921          fparams[3] = INT_TO_FLOAT(params[3]);
 922       }
 923       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 924    }
 925 }
 926
 927
 928 /**
 929  * Set tex parameter to integer value(s).  Primarily intended to set
 930  * integer-valued texture border color (for integer-valued textures).
 931  * New in GL 3.0.
 932  */
 933 void GLAPIENTRY
 934 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 935 {
 936    struct gl_texture_object *texObj;
 937    GET_CURRENT_CONTEXT(ctx);
 938
 939    texObj = get_texobj(ctx, target, GL_FALSE);
 940    if (!texObj)
 941       return;
 942
 943    switch (pname) {
 944    case GL_TEXTURE_BORDER_COLOR:
 945       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 946       /* set the integer-valued border color */
 947       COPY_4V(texObj->Sampler.BorderColor.i, params);
 948       break;
 949    default:
 950       _mesa_TexParameteriv(target, pname, params);
 951       break;
 952    }
 953    /* XXX no driver hook for TexParameterIiv() yet */
 954 }
 955
 956
 957 /**
 958  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 959  * uint-valued texture border color (for integer-valued textures).
 960  * New in GL 3.0
 961  */
 962 void GLAPIENTRY
 963 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 964 {
 965    struct gl_texture_object *texObj;
 966    GET_CURRENT_CONTEXT(ctx);
 967
 968    texObj = get_texobj(ctx, target, GL_FALSE);
 969    if (!texObj)
 970       return;
 971
 972    switch (pname) {
 973    case GL_TEXTURE_BORDER_COLOR:
 974       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 975       /* set the unsigned integer-valued border color */
 976       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 977       break;
 978    default:
 979       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 980       break;
 981    }
 982    /* XXX no driver hook for TexParameterIuiv() yet */
 983 }
 984
 985
 986 static GLboolean
 987 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
 988 {
 989    switch (target) {
 990    case GL_TEXTURE_1D:
 991    case GL_PROXY_TEXTURE_1D:
 992    case GL_TEXTURE_2D:
 993    case GL_PROXY_TEXTURE_2D:
 994    case GL_TEXTURE_3D:
 995    case GL_PROXY_TEXTURE_3D:
 996       return GL_TRUE;
 997    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 998    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 999    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1000    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1001    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1002    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1003    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1004       return ctx->Extensions.ARB_texture_cube_map;
1005    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1006    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1007       return ctx->Extensions.ARB_texture_cube_map_array;
1008    case GL_TEXTURE_RECTANGLE_NV:
1009    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1010       return ctx->Extensions.NV_texture_rectangle;
1011    case GL_TEXTURE_1D_ARRAY_EXT:
1012    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1013    case GL_TEXTURE_2D_ARRAY_EXT:
1014    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1015       return ctx->Extensions.EXT_texture_array;
1016    case GL_TEXTURE_BUFFER:
1017       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1018        * but not in earlier versions that expose ARB_texture_buffer_object.
1019        *
1020        * From the ARB_texture_buffer_object spec:
1021        * "(7) Do buffer textures support texture parameters (TexParameter) or
1022        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1023        *
1024        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1025        *    explicit error language for any of these cases.  That is because
1026        *    each of the functions enumerate the set of valid <target>
1027        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1028        *    these cases means that target is not legal, and an INVALID_ENUM
1029        *    error should be generated."
1030        *
1031        * From the OpenGL 3.1 spec:
1032        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1033        */
1034       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1035    case GL_TEXTURE_2D_MULTISAMPLE:
1036    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1037    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1038    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1039       return ctx->Extensions.ARB_texture_multisample;
1040    default:
1041       return GL_FALSE;
1042    }
1043 }
1044
1045
1046 static void
1047 get_tex_level_parameter_image(struct gl_context *ctx,
1048                               const struct gl_texture_object *texObj,
1049                               GLenum target, GLint level,
1050                               GLenum pname, GLint *params)
1051 {
1052    const struct gl_texture_image *img = NULL;
1053    mesa_format texFormat;
1054
1055    img = _mesa_select_tex_image(ctx, texObj, target, level);
1056    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1057       /* In case of undefined texture image return the default values.
1058        *
1059        * From OpenGL 4.0 spec, page 398:
1060        *    "The initial internal format of a texel array is RGBA
1061        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1062        *     use TEXTURE_INTERNAL_FORMAT."
1063        */
1064
1065       if (pname == GL_TEXTURE_INTERNAL_FORMAT)
1066          *params = GL_RGBA;
1067       else
1068          *params = 0;
1069       return;
1070    }
1071
1072    texFormat = img->TexFormat;
1073
1074    switch (pname) {
1075       case GL_TEXTURE_WIDTH:
1076          *params = img->Width;
1077          break;
1078       case GL_TEXTURE_HEIGHT:
1079          *params = img->Height;
1080          break;
1081       case GL_TEXTURE_DEPTH:
1082          *params = img->Depth;
1083          break;
1084       case GL_TEXTURE_INTERNAL_FORMAT:
1085          if (_mesa_is_format_compressed(texFormat)) {
1086             /* need to return the actual compressed format */
1087             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1088          }
1089          else {
1090             /* If the true internal format is not compressed but the user
1091              * requested a generic compressed format, we have to return the
1092              * generic base format that matches.
1093              *
1094              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1095              *
1096              *     "If no specific compressed format is available,
1097              *     internalformat is instead replaced by the corresponding base
1098              *     internal format."
1099              *
1100              * Otherwise just return the user's requested internal format
1101              */
1102             const GLenum f =
1103                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1104
1105             *params = (f != 0) ? f : img->InternalFormat;
1106          }
1107          break;
1108       case GL_TEXTURE_BORDER:
1109          *params = img->Border;
1110          break;
1111       case GL_TEXTURE_RED_SIZE:
1112       case GL_TEXTURE_GREEN_SIZE:
1113       case GL_TEXTURE_BLUE_SIZE:
1114       case GL_TEXTURE_ALPHA_SIZE:
1115          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1116             *params = _mesa_get_format_bits(texFormat, pname);
1117          else
1118             *params = 0;
1119          break;
1120       case GL_TEXTURE_INTENSITY_SIZE:
1121       case GL_TEXTURE_LUMINANCE_SIZE:
1122          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1123             *params = _mesa_get_format_bits(texFormat, pname);
1124             if (*params == 0) {
1125                /* intensity or luminance is probably stored as RGB[A] */
1126                *params = MIN2(_mesa_get_format_bits(texFormat,
1127                                                     GL_TEXTURE_RED_SIZE),
1128                               _mesa_get_format_bits(texFormat,
1129                                                     GL_TEXTURE_GREEN_SIZE));
1130             }
1131          }
1132          else {
1133             *params = 0;
1134          }
1135          break;
1136       case GL_TEXTURE_DEPTH_SIZE_ARB:
1137          if (!ctx->Extensions.ARB_depth_texture)
1138             goto invalid_pname;
1139          *params = _mesa_get_format_bits(texFormat, pname);
1140          break;
1141       case GL_TEXTURE_STENCIL_SIZE:
1142          *params = _mesa_get_format_bits(texFormat, pname);
1143          break;
1144       case GL_TEXTURE_SHARED_SIZE:
1145          if (ctx->Version < 30 &&
1146              !ctx->Extensions.EXT_texture_shared_exponent)
1147             goto invalid_pname;
1148          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1149          break;
1150
1151       /* GL_ARB_texture_compression */
1152       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1153          if (_mesa_is_format_compressed(texFormat) &&
1154              !_mesa_is_proxy_texture(target)) {
1155             *params = _mesa_format_image_size(texFormat, img->Width,
1156                                               img->Height, img->Depth);
1157          }
1158          else {
1159             _mesa_error(ctx, GL_INVALID_OPERATION,
1160                         "glGetTexLevelParameter[if]v(pname)");
1161          }
1162          break;
1163       case GL_TEXTURE_COMPRESSED:
1164          *params = (GLint) _mesa_is_format_compressed(texFormat);
1165          break;
1166
1167       /* GL_ARB_texture_float */
1168       case GL_TEXTURE_RED_TYPE_ARB:
1169       case GL_TEXTURE_GREEN_TYPE_ARB:
1170       case GL_TEXTURE_BLUE_TYPE_ARB:
1171       case GL_TEXTURE_ALPHA_TYPE_ARB:
1172       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1173       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1174       case GL_TEXTURE_DEPTH_TYPE_ARB:
1175          if (!ctx->Extensions.ARB_texture_float)
1176             goto invalid_pname;
1177          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1178             *params = _mesa_get_format_datatype(texFormat);
1179          else
1180             *params = GL_NONE;
1181          break;
1182
1183       /* GL_ARB_texture_multisample */
1184       case GL_TEXTURE_SAMPLES:
1185          if (!ctx->Extensions.ARB_texture_multisample)
1186             goto invalid_pname;
1187          *params = img->NumSamples;
1188          break;
1189
1190       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1191          if (!ctx->Extensions.ARB_texture_multisample)
1192             goto invalid_pname;
1193          *params = img->FixedSampleLocations;
1194          break;
1195
1196       default:
1197          goto invalid_pname;
1198    }
1199
1200    /* no error if we get here */
1201    return;
1202
1203 invalid_pname:
1204    _mesa_error(ctx, GL_INVALID_ENUM,
1205                "glGetTexLevelParameter[if]v(pname=%s)",
1206                _mesa_lookup_enum_by_nr(pname));
1207 }
1208
1209
1210 static void
1211 get_tex_level_parameter_buffer(struct gl_context *ctx,
1212                                const struct gl_texture_object *texObj,
1213                                GLenum pname, GLint *params)
1214 {
1215    const struct gl_buffer_object *bo = texObj->BufferObject;
1216    mesa_format texFormat = texObj->_BufferObjectFormat;
1217    GLenum internalFormat = texObj->BufferObjectFormat;
1218    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1219
1220    if (!bo) {
1221       /* undefined texture buffer object */
1222       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1223       return;
1224    }
1225
1226    switch (pname) {
1227       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1228          *params = bo->Name;
1229          break;
1230       case GL_TEXTURE_WIDTH:
1231          *params = bo->Size;
1232          break;
1233       case GL_TEXTURE_HEIGHT:
1234       case GL_TEXTURE_DEPTH:
1235       case GL_TEXTURE_BORDER:
1236       case GL_TEXTURE_SHARED_SIZE:
1237       case GL_TEXTURE_COMPRESSED:
1238          *params = 0;
1239          break;
1240       case GL_TEXTURE_INTERNAL_FORMAT:
1241          *params = internalFormat;
1242          break;
1243       case GL_TEXTURE_RED_SIZE:
1244       case GL_TEXTURE_GREEN_SIZE:
1245       case GL_TEXTURE_BLUE_SIZE:
1246       case GL_TEXTURE_ALPHA_SIZE:
1247          if (_mesa_base_format_has_channel(baseFormat, pname))
1248             *params = _mesa_get_format_bits(texFormat, pname);
1249          else
1250             *params = 0;
1251          break;
1252       case GL_TEXTURE_INTENSITY_SIZE:
1253       case GL_TEXTURE_LUMINANCE_SIZE:
1254          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1255             *params = _mesa_get_format_bits(texFormat, pname);
1256             if (*params == 0) {
1257                /* intensity or luminance is probably stored as RGB[A] */
1258                *params = MIN2(_mesa_get_format_bits(texFormat,
1259                                                     GL_TEXTURE_RED_SIZE),
1260                               _mesa_get_format_bits(texFormat,
1261                                                     GL_TEXTURE_GREEN_SIZE));
1262             }
1263          } else {
1264             *params = 0;
1265          }
1266          break;
1267       case GL_TEXTURE_DEPTH_SIZE_ARB:
1268       case GL_TEXTURE_STENCIL_SIZE_EXT:
1269          *params = _mesa_get_format_bits(texFormat, pname);
1270          break;
1271
1272       /* GL_ARB_texture_buffer_range */
1273       case GL_TEXTURE_BUFFER_OFFSET:
1274          if (!ctx->Extensions.ARB_texture_buffer_range)
1275             goto invalid_pname;
1276          *params = texObj->BufferOffset;
1277          break;
1278       case GL_TEXTURE_BUFFER_SIZE:
1279          if (!ctx->Extensions.ARB_texture_buffer_range)
1280             goto invalid_pname;
1281          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1282          break;
1283
1284       /* GL_ARB_texture_compression */
1285       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1286          /* Always illegal for GL_TEXTURE_BUFFER */
1287          _mesa_error(ctx, GL_INVALID_OPERATION,
1288                      "glGetTexLevelParameter[if]v(pname)");
1289          break;
1290
1291       /* GL_ARB_texture_float */
1292       case GL_TEXTURE_RED_TYPE_ARB:
1293       case GL_TEXTURE_GREEN_TYPE_ARB:
1294       case GL_TEXTURE_BLUE_TYPE_ARB:
1295       case GL_TEXTURE_ALPHA_TYPE_ARB:
1296       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1297       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1298       case GL_TEXTURE_DEPTH_TYPE_ARB:
1299          if (!ctx->Extensions.ARB_texture_float)
1300             goto invalid_pname;
1301          if (_mesa_base_format_has_channel(baseFormat, pname))
1302             *params = _mesa_get_format_datatype(texFormat);
1303          else
1304             *params = GL_NONE;
1305          break;
1306
1307       default:
1308          goto invalid_pname;
1309    }
1310
1311    /* no error if we get here */
1312    return;
1313
1314 invalid_pname:
1315    _mesa_error(ctx, GL_INVALID_ENUM,
1316                "glGetTexLevelParameter[if]v(pname=%s)",
1317                _mesa_lookup_enum_by_nr(pname));
1318 }
1319
1320
1321 void GLAPIENTRY
1322 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1323                               GLenum pname, GLfloat *params )
1324 {
1325    GLint iparam;
1326    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1327    *params = (GLfloat) iparam;
1328 }
1329
1330
1331 void GLAPIENTRY
1332 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1333                               GLenum pname, GLint *params )
1334 {
1335    struct gl_texture_object *texObj;
1336    GLint maxLevels;
1337    GET_CURRENT_CONTEXT(ctx);
1338
1339    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1340       _mesa_error(ctx, GL_INVALID_OPERATION,
1341                   "glGetTexLevelParameteriv(current unit)");
1342       return;
1343    }
1344
1345    if (!legal_get_tex_level_parameter_target(ctx, target)) {
1346       _mesa_error(ctx, GL_INVALID_ENUM,
1347                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
1348       return;
1349    }
1350
1351    maxLevels = _mesa_max_texture_levels(ctx, target);
1352    assert(maxLevels != 0);
1353
1354    if (level < 0 || level >= maxLevels) {
1355       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1356       return;
1357    }
1358
1359    texObj = _mesa_get_current_tex_object(ctx, target);
1360
1361    if (target == GL_TEXTURE_BUFFER)
1362       get_tex_level_parameter_buffer(ctx, texObj, pname, params);
1363    else
1364       get_tex_level_parameter_image(ctx, texObj, target, level, pname, params);
1365 }
1366
1367
1368 void GLAPIENTRY
1369 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1370 {
1371    struct gl_texture_object *obj;
1372    GET_CURRENT_CONTEXT(ctx);
1373
1374    obj = get_texobj(ctx, target, GL_TRUE);
1375    if (!obj)
1376       return;
1377
1378    _mesa_lock_texture(ctx, obj);
1379    switch (pname) {
1380       case GL_TEXTURE_MAG_FILTER:
1381          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1382          break;
1383       case GL_TEXTURE_MIN_FILTER:
1384          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1385          break;
1386       case GL_TEXTURE_WRAP_S:
1387          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1388          break;
1389       case GL_TEXTURE_WRAP_T:
1390          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1391          break;
1392       case GL_TEXTURE_WRAP_R:
1393          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1394          break;
1395       case GL_TEXTURE_BORDER_COLOR:
1396          if (!_mesa_is_desktop_gl(ctx))
1397             goto invalid_pname;
1398
1399          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1400             _mesa_update_state_locked(ctx);
1401          if (_mesa_get_clamp_fragment_color(ctx)) {
1402             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1403             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1404             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1405             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1406          }
1407          else {
1408             params[0] = obj->Sampler.BorderColor.f[0];
1409             params[1] = obj->Sampler.BorderColor.f[1];
1410             params[2] = obj->Sampler.BorderColor.f[2];
1411             params[3] = obj->Sampler.BorderColor.f[3];
1412          }
1413          break;
1414       case GL_TEXTURE_RESIDENT:
1415          if (ctx->API != API_OPENGL_COMPAT)
1416             goto invalid_pname;
1417
1418          *params = 1.0F;
1419          break;
1420       case GL_TEXTURE_PRIORITY:
1421          if (ctx->API != API_OPENGL_COMPAT)
1422             goto invalid_pname;
1423
1424          *params = obj->Priority;
1425          break;
1426       case GL_TEXTURE_MIN_LOD:
1427          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1428             goto invalid_pname;
1429
1430          *params = obj->Sampler.MinLod;
1431          break;
1432       case GL_TEXTURE_MAX_LOD:
1433          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1434             goto invalid_pname;
1435
1436          *params = obj->Sampler.MaxLod;
1437          break;
1438       case GL_TEXTURE_BASE_LEVEL:
1439          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1440             goto invalid_pname;
1441
1442          *params = (GLfloat) obj->BaseLevel;
1443          break;
1444       case GL_TEXTURE_MAX_LEVEL:
1445          *params = (GLfloat) obj->MaxLevel;
1446          break;
1447       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1448          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1449             goto invalid_pname;
1450          *params = obj->Sampler.MaxAnisotropy;
1451          break;
1452       case GL_GENERATE_MIPMAP_SGIS:
1453          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1454             goto invalid_pname;
1455
1456          *params = (GLfloat) obj->GenerateMipmap;
1457          break;
1458       case GL_TEXTURE_COMPARE_MODE_ARB:
1459          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1460              && !_mesa_is_gles3(ctx))
1461             goto invalid_pname;
1462          *params = (GLfloat) obj->Sampler.CompareMode;
1463          break;
1464       case GL_TEXTURE_COMPARE_FUNC_ARB:
1465          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1466              && !_mesa_is_gles3(ctx))
1467             goto invalid_pname;
1468          *params = (GLfloat) obj->Sampler.CompareFunc;
1469          break;
1470       case GL_DEPTH_TEXTURE_MODE_ARB:
1471          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1472           * never existed in OpenGL ES.
1473           */
1474          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1475             goto invalid_pname;
1476          *params = (GLfloat) obj->DepthMode;
1477          break;
1478       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1479          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
1480             goto invalid_pname;
1481          *params = (GLfloat)
1482             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1483          break;
1484       case GL_TEXTURE_LOD_BIAS:
1485          if (_mesa_is_gles(ctx))
1486             goto invalid_pname;
1487
1488          *params = obj->Sampler.LodBias;
1489          break;
1490       case GL_TEXTURE_CROP_RECT_OES:
1491          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1492             goto invalid_pname;
1493
1494          params[0] = (GLfloat) obj->CropRect[0];
1495          params[1] = (GLfloat) obj->CropRect[1];
1496          params[2] = (GLfloat) obj->CropRect[2];
1497          params[3] = (GLfloat) obj->CropRect[3];
1498          break;
1499
1500       case GL_TEXTURE_SWIZZLE_R_EXT:
1501       case GL_TEXTURE_SWIZZLE_G_EXT:
1502       case GL_TEXTURE_SWIZZLE_B_EXT:
1503       case GL_TEXTURE_SWIZZLE_A_EXT:
1504          if ((!_mesa_is_desktop_gl(ctx)
1505               || !ctx->Extensions.EXT_texture_swizzle)
1506              && !_mesa_is_gles3(ctx))
1507             goto invalid_pname;
1508          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1509          break;
1510
1511       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1512          if ((!_mesa_is_desktop_gl(ctx)
1513               || !ctx->Extensions.EXT_texture_swizzle)
1514              && !_mesa_is_gles3(ctx)) {
1515             goto invalid_pname;
1516          }
1517          else {
1518             GLuint comp;
1519             for (comp = 0; comp < 4; comp++) {
1520                params[comp] = (GLfloat) obj->Swizzle[comp];
1521             }
1522          }
1523          break;
1524
1525       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1526          if (!_mesa_is_desktop_gl(ctx)
1527              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1528             goto invalid_pname;
1529          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1530          break;
1531
1532       case GL_TEXTURE_IMMUTABLE_FORMAT:
1533          *params = (GLfloat) obj->Immutable;
1534          break;
1535
1536       case GL_TEXTURE_IMMUTABLE_LEVELS:
1537          if (_mesa_is_gles3(ctx) ||
1538              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1539             *params = (GLfloat) obj->ImmutableLevels;
1540          else
1541             goto invalid_pname;
1542          break;
1543
1544       case GL_TEXTURE_VIEW_MIN_LEVEL:
1545          if (!ctx->Extensions.ARB_texture_view)
1546             goto invalid_pname;
1547          *params = (GLfloat) obj->MinLevel;
1548          break;
1549
1550       case GL_TEXTURE_VIEW_NUM_LEVELS:
1551          if (!ctx->Extensions.ARB_texture_view)
1552             goto invalid_pname;
1553          *params = (GLfloat) obj->NumLevels;
1554          break;
1555
1556       case GL_TEXTURE_VIEW_MIN_LAYER:
1557          if (!ctx->Extensions.ARB_texture_view)
1558             goto invalid_pname;
1559          *params = (GLfloat) obj->MinLayer;
1560          break;
1561
1562       case GL_TEXTURE_VIEW_NUM_LAYERS:
1563          if (!ctx->Extensions.ARB_texture_view)
1564             goto invalid_pname;
1565          *params = (GLfloat) obj->NumLayers;
1566          break;
1567
1568       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1569          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1570             goto invalid_pname;
1571          *params = (GLfloat) obj->RequiredTextureImageUnits;
1572          break;
1573
1574       case GL_TEXTURE_SRGB_DECODE_EXT:
1575          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1576             goto invalid_pname;
1577          *params = (GLfloat) obj->Sampler.sRGBDecode;
1578          break;
1579
1580       default:
1581          goto invalid_pname;
1582    }
1583
1584    /* no error if we get here */
1585    _mesa_unlock_texture(ctx, obj);
1586    return;
1587
1588 invalid_pname:
1589    _mesa_unlock_texture(ctx, obj);
1590    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1591 }
1592
1593
1594 void GLAPIENTRY
1595 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1596 {
1597    struct gl_texture_object *obj;
1598    GET_CURRENT_CONTEXT(ctx);
1599
1600    obj = get_texobj(ctx, target, GL_TRUE);
1601    if (!obj)
1602       return;
1603
1604    _mesa_lock_texture(ctx, obj);
1605    switch (pname) {
1606       case GL_TEXTURE_MAG_FILTER:
1607          *params = (GLint) obj->Sampler.MagFilter;
1608          break;
1609       case GL_TEXTURE_MIN_FILTER:
1610          *params = (GLint) obj->Sampler.MinFilter;
1611          break;
1612       case GL_TEXTURE_WRAP_S:
1613          *params = (GLint) obj->Sampler.WrapS;
1614          break;
1615       case GL_TEXTURE_WRAP_T:
1616          *params = (GLint) obj->Sampler.WrapT;
1617          break;
1618       case GL_TEXTURE_WRAP_R:
1619          *params = (GLint) obj->Sampler.WrapR;
1620          break;
1621       case GL_TEXTURE_BORDER_COLOR:
1622          if (!_mesa_is_desktop_gl(ctx))
1623             goto invalid_pname;
1624
1625          {
1626             GLfloat b[4];
1627             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1628             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1629             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1630             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1631             params[0] = FLOAT_TO_INT(b[0]);
1632             params[1] = FLOAT_TO_INT(b[1]);
1633             params[2] = FLOAT_TO_INT(b[2]);
1634             params[3] = FLOAT_TO_INT(b[3]);
1635          }
1636          break;
1637       case GL_TEXTURE_RESIDENT:
1638          if (ctx->API != API_OPENGL_COMPAT)
1639             goto invalid_pname;
1640
1641          *params = 1;
1642          break;
1643       case GL_TEXTURE_PRIORITY:
1644          if (ctx->API != API_OPENGL_COMPAT)
1645             goto invalid_pname;
1646
1647          *params = FLOAT_TO_INT(obj->Priority);
1648          break;
1649       case GL_TEXTURE_MIN_LOD:
1650          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1651             goto invalid_pname;
1652
1653          *params = (GLint) obj->Sampler.MinLod;
1654          break;
1655       case GL_TEXTURE_MAX_LOD:
1656          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1657             goto invalid_pname;
1658
1659          *params = (GLint) obj->Sampler.MaxLod;
1660          break;
1661       case GL_TEXTURE_BASE_LEVEL:
1662          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1663             goto invalid_pname;
1664
1665          *params = obj->BaseLevel;
1666          break;
1667       case GL_TEXTURE_MAX_LEVEL:
1668          *params = obj->MaxLevel;
1669          break;
1670       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1671          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1672             goto invalid_pname;
1673          *params = (GLint) obj->Sampler.MaxAnisotropy;
1674          break;
1675       case GL_GENERATE_MIPMAP_SGIS:
1676          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1677             goto invalid_pname;
1678
1679          *params = (GLint) obj->GenerateMipmap;
1680          break;
1681       case GL_TEXTURE_COMPARE_MODE_ARB:
1682          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1683              && !_mesa_is_gles3(ctx))
1684             goto invalid_pname;
1685          *params = (GLint) obj->Sampler.CompareMode;
1686          break;
1687       case GL_TEXTURE_COMPARE_FUNC_ARB:
1688          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1689              && !_mesa_is_gles3(ctx))
1690             goto invalid_pname;
1691          *params = (GLint) obj->Sampler.CompareFunc;
1692          break;
1693       case GL_DEPTH_TEXTURE_MODE_ARB:
1694          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1695             goto invalid_pname;
1696          *params = (GLint) obj->DepthMode;
1697          break;
1698       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1699          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
1700             goto invalid_pname;
1701          *params = (GLint)
1702             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1703          break;
1704       case GL_TEXTURE_LOD_BIAS:
1705          if (_mesa_is_gles(ctx))
1706             goto invalid_pname;
1707
1708          /* GL spec 'Data Conversions' section specifies that floating-point
1709           * value in integer Get function is rounded to nearest integer
1710           */
1711          *params = IROUND(obj->Sampler.LodBias);
1712          break;
1713       case GL_TEXTURE_CROP_RECT_OES:
1714          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1715             goto invalid_pname;
1716
1717          params[0] = obj->CropRect[0];
1718          params[1] = obj->CropRect[1];
1719          params[2] = obj->CropRect[2];
1720          params[3] = obj->CropRect[3];
1721          break;
1722       case GL_TEXTURE_SWIZZLE_R_EXT:
1723       case GL_TEXTURE_SWIZZLE_G_EXT:
1724       case GL_TEXTURE_SWIZZLE_B_EXT:
1725       case GL_TEXTURE_SWIZZLE_A_EXT:
1726          if ((!_mesa_is_desktop_gl(ctx)
1727               || !ctx->Extensions.EXT_texture_swizzle)
1728              && !_mesa_is_gles3(ctx))
1729             goto invalid_pname;
1730          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1731          break;
1732
1733       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1734          if ((!_mesa_is_desktop_gl(ctx)
1735               || !ctx->Extensions.EXT_texture_swizzle)
1736              && !_mesa_is_gles3(ctx))
1737             goto invalid_pname;
1738          COPY_4V(params, obj->Swizzle);
1739          break;
1740
1741       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1742          if (!_mesa_is_desktop_gl(ctx)
1743              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1744             goto invalid_pname;
1745          *params = (GLint) obj->Sampler.CubeMapSeamless;
1746          break;
1747
1748       case GL_TEXTURE_IMMUTABLE_FORMAT:
1749          *params = (GLint) obj->Immutable;
1750          break;
1751
1752       case GL_TEXTURE_IMMUTABLE_LEVELS:
1753          if (_mesa_is_gles3(ctx) ||
1754              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1755             *params = obj->ImmutableLevels;
1756          else
1757             goto invalid_pname;
1758          break;
1759
1760       case GL_TEXTURE_VIEW_MIN_LEVEL:
1761          if (!ctx->Extensions.ARB_texture_view)
1762             goto invalid_pname;
1763          *params = (GLint) obj->MinLevel;
1764          break;
1765
1766       case GL_TEXTURE_VIEW_NUM_LEVELS:
1767          if (!ctx->Extensions.ARB_texture_view)
1768             goto invalid_pname;
1769          *params = (GLint) obj->NumLevels;
1770          break;
1771
1772       case GL_TEXTURE_VIEW_MIN_LAYER:
1773          if (!ctx->Extensions.ARB_texture_view)
1774             goto invalid_pname;
1775          *params = (GLint) obj->MinLayer;
1776          break;
1777
1778       case GL_TEXTURE_VIEW_NUM_LAYERS:
1779          if (!ctx->Extensions.ARB_texture_view)
1780             goto invalid_pname;
1781          *params = (GLint) obj->NumLayers;
1782          break;
1783
1784       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1785          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1786             goto invalid_pname;
1787          *params = obj->RequiredTextureImageUnits;
1788          break;
1789
1790       case GL_TEXTURE_SRGB_DECODE_EXT:
1791          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1792             goto invalid_pname;
1793          *params = obj->Sampler.sRGBDecode;
1794          break;
1795
1796       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
1797          if (!ctx->Extensions.ARB_shader_image_load_store)
1798             goto invalid_pname;
1799          *params = obj->ImageFormatCompatibilityType;
1800          break;
1801
1802       default:
1803          goto invalid_pname;
1804    }
1805
1806    /* no error if we get here */
1807    _mesa_unlock_texture(ctx, obj);
1808    return;
1809
1810 invalid_pname:
1811    _mesa_unlock_texture(ctx, obj);
1812    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1813 }
1814
1815
1816 /** New in GL 3.0 */
1817 void GLAPIENTRY
1818 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1819 {
1820    struct gl_texture_object *texObj;
1821    GET_CURRENT_CONTEXT(ctx);
1822
1823    texObj = get_texobj(ctx, target, GL_TRUE);
1824    if (!texObj)
1825       return;
1826
1827    switch (pname) {
1828    case GL_TEXTURE_BORDER_COLOR:
1829       COPY_4V(params, texObj->Sampler.BorderColor.i);
1830       break;
1831    default:
1832       _mesa_GetTexParameteriv(target, pname, params);
1833    }
1834 }
1835
1836
1837 /** New in GL 3.0 */
1838 void GLAPIENTRY
1839 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1840 {
1841    struct gl_texture_object *texObj;
1842    GET_CURRENT_CONTEXT(ctx);
1843
1844    texObj = get_texobj(ctx, target, GL_TRUE);
1845    if (!texObj)
1846       return;
1847
1848    switch (pname) {
1849    case GL_TEXTURE_BORDER_COLOR:
1850       COPY_4V(params, texObj->Sampler.BorderColor.i);
1851       break;
1852    default:
1853       {
1854          GLint ip[4];
1855          _mesa_GetTexParameteriv(target, pname, ip);
1856          params[0] = ip[0];
1857          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1858              pname == GL_TEXTURE_CROP_RECT_OES) {
1859             params[1] = ip[1];
1860             params[2] = ip[2];
1861             params[3] = ip[3];
1862          }
1863       }
1864    }
1865 }