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 ||
 356           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] > 0)) {
 357          _mesa_error(ctx, GL_INVALID_VALUE,
 358                      "glTexParameter(param=%d)", params[0]);
 359          return GL_FALSE;
 360       }
 361       incomplete(ctx, texObj);
 362
 363       /** From ARB_texture_storage:
 364        * However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then level_base is
 365        * clamped to the range [0, <levels> - 1] and level_max is then clamped to
 366        * the range [level_base, <levels> - 1], where <levels> is the parameter
 367        * passed the call to TexStorage* for the texture object.
 368        */
 369       if (texObj->Immutable)
 370           texObj->MaxLevel = CLAMP(params[0], texObj->BaseLevel,
 371                                    texObj->ImmutableLevels - 1);
 372       else
 373          texObj->MaxLevel = params[0];
 374
 375       return GL_TRUE;
 376
 377    case GL_GENERATE_MIPMAP_SGIS:
 378       if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
 379          goto invalid_pname;
 380
 381       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 382          goto invalid_param;
 383       if (texObj->GenerateMipmap != params[0]) {
 384          /* no flush() */
 385          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 386          return GL_TRUE;
 387       }
 388       return GL_FALSE;
 389
 390    case GL_TEXTURE_COMPARE_MODE_ARB:
 391       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 392           || _mesa_is_gles3(ctx)) {
 393
 394          if (!target_allows_setting_sampler_parameters(texObj->Target))
 395             goto invalid_operation;
 396
 397          if (texObj->Sampler.CompareMode == params[0])
 398             return GL_FALSE;
 399          if (params[0] == GL_NONE ||
 400              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 401             flush(ctx);
 402             texObj->Sampler.CompareMode = params[0];
 403             return GL_TRUE;
 404          }
 405          goto invalid_param;
 406       }
 407       goto invalid_pname;
 408
 409    case GL_TEXTURE_COMPARE_FUNC_ARB:
 410       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 411           || _mesa_is_gles3(ctx)) {
 412
 413          if (!target_allows_setting_sampler_parameters(texObj->Target))
 414             goto invalid_operation;
 415
 416          if (texObj->Sampler.CompareFunc == params[0])
 417             return GL_FALSE;
 418          switch (params[0]) {
 419          case GL_LEQUAL:
 420          case GL_GEQUAL:
 421          case GL_EQUAL:
 422          case GL_NOTEQUAL:
 423          case GL_LESS:
 424          case GL_GREATER:
 425          case GL_ALWAYS:
 426          case GL_NEVER:
 427             flush(ctx);
 428             texObj->Sampler.CompareFunc = params[0];
 429             return GL_TRUE;
 430          default:
 431             goto invalid_param;
 432          }
 433       }
 434       goto invalid_pname;
 435
 436    case GL_DEPTH_TEXTURE_MODE_ARB:
 437       /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has never
 438        * existed in OpenGL ES.
 439        */
 440       if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_texture) {
 441          if (texObj->DepthMode == params[0])
 442             return GL_FALSE;
 443          if (params[0] == GL_LUMINANCE ||
 444              params[0] == GL_INTENSITY ||
 445              params[0] == GL_ALPHA ||
 446              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 447             flush(ctx);
 448             texObj->DepthMode = params[0];
 449             return GL_TRUE;
 450          }
 451          goto invalid_param;
 452       }
 453       goto invalid_pname;
 454
 455    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 456       if (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_stencil_texturing) {
 457          bool stencil = params[0] == GL_STENCIL_INDEX;
 458          if (!stencil && params[0] != GL_DEPTH_COMPONENT)
 459             goto invalid_param;
 460
 461          if (texObj->StencilSampling == stencil)
 462             return GL_FALSE;
 463
 464          texObj->StencilSampling = stencil;
 465          return GL_TRUE;
 466       }
 467       goto invalid_pname;
 468
 469    case GL_TEXTURE_CROP_RECT_OES:
 470       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 471          goto invalid_pname;
 472
 473       texObj->CropRect[0] = params[0];
 474       texObj->CropRect[1] = params[1];
 475       texObj->CropRect[2] = params[2];
 476       texObj->CropRect[3] = params[3];
 477       return GL_TRUE;
 478
 479    case GL_TEXTURE_SWIZZLE_R_EXT:
 480    case GL_TEXTURE_SWIZZLE_G_EXT:
 481    case GL_TEXTURE_SWIZZLE_B_EXT:
 482    case GL_TEXTURE_SWIZZLE_A_EXT:
 483       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 484           || _mesa_is_gles3(ctx)) {
 485          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 486          const GLint swz = comp_to_swizzle(params[0]);
 487          if (swz < 0) {
 488             _mesa_error(ctx, GL_INVALID_OPERATION,
 489                         "glTexParameter(swizzle 0x%x)", params[0]);
 490             return GL_FALSE;
 491          }
 492          ASSERT(comp < 4);
 493
 494          flush(ctx);
 495          texObj->Swizzle[comp] = params[0];
 496          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 497          return GL_TRUE;
 498       }
 499       goto invalid_pname;
 500
 501    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 502       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 503           || _mesa_is_gles3(ctx)) {
 504          GLuint comp;
 505          flush(ctx);
 506          for (comp = 0; comp < 4; comp++) {
 507             const GLint swz = comp_to_swizzle(params[comp]);
 508             if (swz >= 0) {
 509                texObj->Swizzle[comp] = params[comp];
 510                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 511             }
 512             else {
 513                _mesa_error(ctx, GL_INVALID_OPERATION,
 514                            "glTexParameter(swizzle 0x%x)", params[comp]);
 515                return GL_FALSE;
 516             }
 517          }
 518          return GL_TRUE;
 519       }
 520       goto invalid_pname;
 521
 522    case GL_TEXTURE_SRGB_DECODE_EXT:
 523       if (_mesa_is_desktop_gl(ctx)
 524           && ctx->Extensions.EXT_texture_sRGB_decode) {
 525          GLenum decode = params[0];
 526
 527          if (!target_allows_setting_sampler_parameters(texObj->Target))
 528             goto invalid_operation;
 529
 530          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 531             if (texObj->Sampler.sRGBDecode != decode) {
 532                flush(ctx);
 533                texObj->Sampler.sRGBDecode = decode;
 534             }
 535             return GL_TRUE;
 536          }
 537       }
 538       goto invalid_pname;
 539
 540    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 541       if (_mesa_is_desktop_gl(ctx)
 542           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 543          GLenum param = params[0];
 544
 545          if (!target_allows_setting_sampler_parameters(texObj->Target))
 546             goto invalid_operation;
 547
 548          if (param != GL_TRUE && param != GL_FALSE) {
 549             goto invalid_param;
 550          }
 551          if (param != texObj->Sampler.CubeMapSeamless) {
 552             flush(ctx);
 553             texObj->Sampler.CubeMapSeamless = param;
 554          }
 555          return GL_TRUE;
 556       }
 557       goto invalid_pname;
 558
 559    default:
 560       goto invalid_pname;
 561    }
 562
 563 invalid_pname:
 564    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 565                _mesa_lookup_enum_by_nr(pname));
 566    return GL_FALSE;
 567
 568 invalid_param:
 569    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 570                _mesa_lookup_enum_by_nr(params[0]));
 571    return GL_FALSE;
 572
 573 invalid_operation:
 574    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 575                _mesa_lookup_enum_by_nr(pname));
 576    return GL_FALSE;
 577 }
 578
 579
 580 /**
 581  * Set a float-valued texture parameter
 582  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 583  */
 584 static GLboolean
 585 set_tex_parameterf(struct gl_context *ctx,
 586                    struct gl_texture_object *texObj,
 587                    GLenum pname, const GLfloat *params)
 588 {
 589    switch (pname) {
 590    case GL_TEXTURE_MIN_LOD:
 591       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 592          goto invalid_pname;
 593
 594       if (!target_allows_setting_sampler_parameters(texObj->Target))
 595          goto invalid_operation;
 596
 597       if (texObj->Sampler.MinLod == params[0])
 598          return GL_FALSE;
 599       flush(ctx);
 600       texObj->Sampler.MinLod = params[0];
 601       return GL_TRUE;
 602
 603    case GL_TEXTURE_MAX_LOD:
 604       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 605          goto invalid_pname;
 606
 607       if (!target_allows_setting_sampler_parameters(texObj->Target))
 608          goto invalid_operation;
 609
 610       if (texObj->Sampler.MaxLod == params[0])
 611          return GL_FALSE;
 612       flush(ctx);
 613       texObj->Sampler.MaxLod = params[0];
 614       return GL_TRUE;
 615
 616    case GL_TEXTURE_PRIORITY:
 617       if (ctx->API != API_OPENGL_COMPAT)
 618          goto invalid_pname;
 619
 620       flush(ctx);
 621       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 622       return GL_TRUE;
 623
 624    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 625       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 626          if (!target_allows_setting_sampler_parameters(texObj->Target))
 627             goto invalid_operation;
 628
 629          if (texObj->Sampler.MaxAnisotropy == params[0])
 630             return GL_FALSE;
 631          if (params[0] < 1.0) {
 632             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 633             return GL_FALSE;
 634          }
 635          flush(ctx);
 636          /* clamp to max, that's what NVIDIA does */
 637          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 638                                       ctx->Const.MaxTextureMaxAnisotropy);
 639          return GL_TRUE;
 640       }
 641       else {
 642          static GLuint count = 0;
 643          if (count++ < 10)
 644             goto invalid_pname;
 645       }
 646       return GL_FALSE;
 647
 648    case GL_TEXTURE_LOD_BIAS:
 649       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 650       if (_mesa_is_gles(ctx))
 651          goto invalid_pname;
 652
 653       if (!target_allows_setting_sampler_parameters(texObj->Target))
 654          goto invalid_operation;
 655
 656       if (texObj->Sampler.LodBias != params[0]) {
 657          flush(ctx);
 658          texObj->Sampler.LodBias = params[0];
 659          return GL_TRUE;
 660       }
 661       break;
 662
 663    case GL_TEXTURE_BORDER_COLOR:
 664       if (!_mesa_is_desktop_gl(ctx))
 665          goto invalid_pname;
 666
 667       if (!target_allows_setting_sampler_parameters(texObj->Target))
 668          goto invalid_operation;
 669
 670       flush(ctx);
 671       /* ARB_texture_float disables clamping */
 672       if (ctx->Extensions.ARB_texture_float) {
 673          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 674          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 675          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 676          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 677       } else {
 678          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 679          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 680          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 681          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 682       }
 683       return GL_TRUE;
 684
 685    default:
 686       goto invalid_pname;
 687    }
 688    return GL_FALSE;
 689
 690 invalid_pname:
 691    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 692                _mesa_lookup_enum_by_nr(pname));
 693    return GL_FALSE;
 694
 695 invalid_operation:
 696    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 697                _mesa_lookup_enum_by_nr(pname));
 698    return GL_FALSE;
 699 }
 700
 701
 702 void GLAPIENTRY
 703 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 704 {
 705    GLboolean need_update;
 706    struct gl_texture_object *texObj;
 707    GET_CURRENT_CONTEXT(ctx);
 708
 709    texObj = get_texobj(ctx, target, GL_FALSE);
 710    if (!texObj)
 711       return;
 712
 713    switch (pname) {
 714    case GL_TEXTURE_MIN_FILTER:
 715    case GL_TEXTURE_MAG_FILTER:
 716    case GL_TEXTURE_WRAP_S:
 717    case GL_TEXTURE_WRAP_T:
 718    case GL_TEXTURE_WRAP_R:
 719    case GL_TEXTURE_BASE_LEVEL:
 720    case GL_TEXTURE_MAX_LEVEL:
 721    case GL_GENERATE_MIPMAP_SGIS:
 722    case GL_TEXTURE_COMPARE_MODE_ARB:
 723    case GL_TEXTURE_COMPARE_FUNC_ARB:
 724    case GL_DEPTH_TEXTURE_MODE_ARB:
 725    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 726    case GL_TEXTURE_SRGB_DECODE_EXT:
 727    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 728    case GL_TEXTURE_SWIZZLE_R_EXT:
 729    case GL_TEXTURE_SWIZZLE_G_EXT:
 730    case GL_TEXTURE_SWIZZLE_B_EXT:
 731    case GL_TEXTURE_SWIZZLE_A_EXT:
 732       {
 733          GLint p[4];
 734          p[0] = (param > 0) ?
 735                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 736                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 737
 738          p[1] = p[2] = p[3] = 0;
 739          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 740       }
 741       break;
 742    default:
 743       {
 744          /* this will generate an error if pname is illegal */
 745          GLfloat p[4];
 746          p[0] = param;
 747          p[1] = p[2] = p[3] = 0.0F;
 748          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 749       }
 750    }
 751
 752    if (ctx->Driver.TexParameter && need_update) {
 753       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 754    }
 755 }
 756
 757
 758 void GLAPIENTRY
 759 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 760 {
 761    GLboolean need_update;
 762    struct gl_texture_object *texObj;
 763    GET_CURRENT_CONTEXT(ctx);
 764
 765    texObj = get_texobj(ctx, target, GL_FALSE);
 766    if (!texObj)
 767       return;
 768
 769    switch (pname) {
 770    case GL_TEXTURE_MIN_FILTER:
 771    case GL_TEXTURE_MAG_FILTER:
 772    case GL_TEXTURE_WRAP_S:
 773    case GL_TEXTURE_WRAP_T:
 774    case GL_TEXTURE_WRAP_R:
 775    case GL_TEXTURE_BASE_LEVEL:
 776    case GL_TEXTURE_MAX_LEVEL:
 777    case GL_GENERATE_MIPMAP_SGIS:
 778    case GL_TEXTURE_COMPARE_MODE_ARB:
 779    case GL_TEXTURE_COMPARE_FUNC_ARB:
 780    case GL_DEPTH_TEXTURE_MODE_ARB:
 781    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 782    case GL_TEXTURE_SRGB_DECODE_EXT:
 783    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 784       {
 785          /* convert float param to int */
 786          GLint p[4];
 787          p[0] = (GLint) params[0];
 788          p[1] = p[2] = p[3] = 0;
 789          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 790       }
 791       break;
 792    case GL_TEXTURE_CROP_RECT_OES:
 793       {
 794          /* convert float params to int */
 795          GLint iparams[4];
 796          iparams[0] = (GLint) params[0];
 797          iparams[1] = (GLint) params[1];
 798          iparams[2] = (GLint) params[2];
 799          iparams[3] = (GLint) params[3];
 800          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 801       }
 802       break;
 803    case GL_TEXTURE_SWIZZLE_R_EXT:
 804    case GL_TEXTURE_SWIZZLE_G_EXT:
 805    case GL_TEXTURE_SWIZZLE_B_EXT:
 806    case GL_TEXTURE_SWIZZLE_A_EXT:
 807    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 808       {
 809          GLint p[4] = {0, 0, 0, 0};
 810          p[0] = (GLint) params[0];
 811          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 812             p[1] = (GLint) params[1];
 813             p[2] = (GLint) params[2];
 814             p[3] = (GLint) params[3];
 815          }
 816          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 817       }
 818       break;
 819    default:
 820       /* this will generate an error if pname is illegal */
 821       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 822    }
 823
 824    if (ctx->Driver.TexParameter && need_update) {
 825       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 826    }
 827 }
 828
 829
 830 void GLAPIENTRY
 831 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 832 {
 833    GLboolean need_update;
 834    struct gl_texture_object *texObj;
 835    GET_CURRENT_CONTEXT(ctx);
 836
 837    texObj = get_texobj(ctx, target, GL_FALSE);
 838    if (!texObj)
 839       return;
 840
 841    switch (pname) {
 842    case GL_TEXTURE_MIN_LOD:
 843    case GL_TEXTURE_MAX_LOD:
 844    case GL_TEXTURE_PRIORITY:
 845    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 846    case GL_TEXTURE_LOD_BIAS:
 847    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 848       {
 849          GLfloat fparam[4];
 850          fparam[0] = (GLfloat) param;
 851          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 852          /* convert int param to float */
 853          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 854       }
 855       break;
 856    default:
 857       /* this will generate an error if pname is illegal */
 858       {
 859          GLint iparam[4];
 860          iparam[0] = param;
 861          iparam[1] = iparam[2] = iparam[3] = 0;
 862          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 863       }
 864    }
 865
 866    if (ctx->Driver.TexParameter && need_update) {
 867       GLfloat fparam = (GLfloat) param;
 868       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 869    }
 870 }
 871
 872
 873 void GLAPIENTRY
 874 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 875 {
 876    GLboolean need_update;
 877    struct gl_texture_object *texObj;
 878    GET_CURRENT_CONTEXT(ctx);
 879
 880    texObj = get_texobj(ctx, target, GL_FALSE);
 881    if (!texObj)
 882       return;
 883
 884    switch (pname) {
 885    case GL_TEXTURE_BORDER_COLOR:
 886       {
 887          /* convert int params to float */
 888          GLfloat fparams[4];
 889          fparams[0] = INT_TO_FLOAT(params[0]);
 890          fparams[1] = INT_TO_FLOAT(params[1]);
 891          fparams[2] = INT_TO_FLOAT(params[2]);
 892          fparams[3] = INT_TO_FLOAT(params[3]);
 893          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 894       }
 895       break;
 896    case GL_TEXTURE_MIN_LOD:
 897    case GL_TEXTURE_MAX_LOD:
 898    case GL_TEXTURE_PRIORITY:
 899    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 900    case GL_TEXTURE_LOD_BIAS:
 901    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 902       {
 903          /* convert int param to float */
 904          GLfloat fparams[4];
 905          fparams[0] = (GLfloat) params[0];
 906          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 907          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 908       }
 909       break;
 910    default:
 911       /* this will generate an error if pname is illegal */
 912       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 913    }
 914
 915    if (ctx->Driver.TexParameter && need_update) {
 916       GLfloat fparams[4];
 917       fparams[0] = INT_TO_FLOAT(params[0]);
 918       if (pname == GL_TEXTURE_BORDER_COLOR ||
 919           pname == GL_TEXTURE_CROP_RECT_OES) {
 920          fparams[1] = INT_TO_FLOAT(params[1]);
 921          fparams[2] = INT_TO_FLOAT(params[2]);
 922          fparams[3] = INT_TO_FLOAT(params[3]);
 923       }
 924       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 925    }
 926 }
 927
 928
 929 /**
 930  * Set tex parameter to integer value(s).  Primarily intended to set
 931  * integer-valued texture border color (for integer-valued textures).
 932  * New in GL 3.0.
 933  */
 934 void GLAPIENTRY
 935 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 936 {
 937    struct gl_texture_object *texObj;
 938    GET_CURRENT_CONTEXT(ctx);
 939
 940    texObj = get_texobj(ctx, target, GL_FALSE);
 941    if (!texObj)
 942       return;
 943
 944    switch (pname) {
 945    case GL_TEXTURE_BORDER_COLOR:
 946       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 947       /* set the integer-valued border color */
 948       COPY_4V(texObj->Sampler.BorderColor.i, params);
 949       break;
 950    default:
 951       _mesa_TexParameteriv(target, pname, params);
 952       break;
 953    }
 954    /* XXX no driver hook for TexParameterIiv() yet */
 955 }
 956
 957
 958 /**
 959  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 960  * uint-valued texture border color (for integer-valued textures).
 961  * New in GL 3.0
 962  */
 963 void GLAPIENTRY
 964 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 965 {
 966    struct gl_texture_object *texObj;
 967    GET_CURRENT_CONTEXT(ctx);
 968
 969    texObj = get_texobj(ctx, target, GL_FALSE);
 970    if (!texObj)
 971       return;
 972
 973    switch (pname) {
 974    case GL_TEXTURE_BORDER_COLOR:
 975       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 976       /* set the unsigned integer-valued border color */
 977       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 978       break;
 979    default:
 980       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 981       break;
 982    }
 983    /* XXX no driver hook for TexParameterIuiv() yet */
 984 }
 985
 986
 987 static GLboolean
 988 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
 989 {
 990    switch (target) {
 991    case GL_TEXTURE_1D:
 992    case GL_PROXY_TEXTURE_1D:
 993    case GL_TEXTURE_2D:
 994    case GL_PROXY_TEXTURE_2D:
 995    case GL_TEXTURE_3D:
 996    case GL_PROXY_TEXTURE_3D:
 997       return GL_TRUE;
 998    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 999    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1000    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1001    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1002    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1003    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1004    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1005       return ctx->Extensions.ARB_texture_cube_map;
1006    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1007    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1008       return ctx->Extensions.ARB_texture_cube_map_array;
1009    case GL_TEXTURE_RECTANGLE_NV:
1010    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1011       return ctx->Extensions.NV_texture_rectangle;
1012    case GL_TEXTURE_1D_ARRAY_EXT:
1013    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1014    case GL_TEXTURE_2D_ARRAY_EXT:
1015    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1016       return ctx->Extensions.EXT_texture_array;
1017    case GL_TEXTURE_BUFFER:
1018       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1019        * but not in earlier versions that expose ARB_texture_buffer_object.
1020        *
1021        * From the ARB_texture_buffer_object spec:
1022        * "(7) Do buffer textures support texture parameters (TexParameter) or
1023        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1024        *
1025        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1026        *    explicit error language for any of these cases.  That is because
1027        *    each of the functions enumerate the set of valid <target>
1028        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1029        *    these cases means that target is not legal, and an INVALID_ENUM
1030        *    error should be generated."
1031        *
1032        * From the OpenGL 3.1 spec:
1033        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1034        */
1035       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1036    case GL_TEXTURE_2D_MULTISAMPLE:
1037    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1038    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1039    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1040       return ctx->Extensions.ARB_texture_multisample;
1041    default:
1042       return GL_FALSE;
1043    }
1044 }
1045
1046
1047 static void
1048 get_tex_level_parameter_image(struct gl_context *ctx,
1049                               const struct gl_texture_object *texObj,
1050                               GLenum target, GLint level,
1051                               GLenum pname, GLint *params)
1052 {
1053    const struct gl_texture_image *img = NULL;
1054    mesa_format texFormat;
1055
1056    img = _mesa_select_tex_image(ctx, texObj, target, level);
1057    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1058       /* In case of undefined texture image return the default values.
1059        *
1060        * From OpenGL 4.0 spec, page 398:
1061        *    "The initial internal format of a texel array is RGBA
1062        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1063        *     use TEXTURE_INTERNAL_FORMAT."
1064        */
1065
1066       if (pname == GL_TEXTURE_INTERNAL_FORMAT)
1067          *params = GL_RGBA;
1068       else
1069          *params = 0;
1070       return;
1071    }
1072
1073    texFormat = img->TexFormat;
1074
1075    switch (pname) {
1076       case GL_TEXTURE_WIDTH:
1077          *params = img->Width;
1078          break;
1079       case GL_TEXTURE_HEIGHT:
1080          *params = img->Height;
1081          break;
1082       case GL_TEXTURE_DEPTH:
1083          *params = img->Depth;
1084          break;
1085       case GL_TEXTURE_INTERNAL_FORMAT:
1086          if (_mesa_is_format_compressed(texFormat)) {
1087             /* need to return the actual compressed format */
1088             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1089          }
1090          else {
1091             /* If the true internal format is not compressed but the user
1092              * requested a generic compressed format, we have to return the
1093              * generic base format that matches.
1094              *
1095              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1096              *
1097              *     "If no specific compressed format is available,
1098              *     internalformat is instead replaced by the corresponding base
1099              *     internal format."
1100              *
1101              * Otherwise just return the user's requested internal format
1102              */
1103             const GLenum f =
1104                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1105
1106             *params = (f != 0) ? f : img->InternalFormat;
1107          }
1108          break;
1109       case GL_TEXTURE_BORDER:
1110          *params = img->Border;
1111          break;
1112       case GL_TEXTURE_RED_SIZE:
1113       case GL_TEXTURE_GREEN_SIZE:
1114       case GL_TEXTURE_BLUE_SIZE:
1115       case GL_TEXTURE_ALPHA_SIZE:
1116          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1117             *params = _mesa_get_format_bits(texFormat, pname);
1118          else
1119             *params = 0;
1120          break;
1121       case GL_TEXTURE_INTENSITY_SIZE:
1122       case GL_TEXTURE_LUMINANCE_SIZE:
1123          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1124             *params = _mesa_get_format_bits(texFormat, pname);
1125             if (*params == 0) {
1126                /* intensity or luminance is probably stored as RGB[A] */
1127                *params = MIN2(_mesa_get_format_bits(texFormat,
1128                                                     GL_TEXTURE_RED_SIZE),
1129                               _mesa_get_format_bits(texFormat,
1130                                                     GL_TEXTURE_GREEN_SIZE));
1131             }
1132          }
1133          else {
1134             *params = 0;
1135          }
1136          break;
1137       case GL_TEXTURE_DEPTH_SIZE_ARB:
1138          if (!ctx->Extensions.ARB_depth_texture)
1139             goto invalid_pname;
1140          *params = _mesa_get_format_bits(texFormat, pname);
1141          break;
1142       case GL_TEXTURE_STENCIL_SIZE:
1143          *params = _mesa_get_format_bits(texFormat, pname);
1144          break;
1145       case GL_TEXTURE_SHARED_SIZE:
1146          if (ctx->Version < 30 &&
1147              !ctx->Extensions.EXT_texture_shared_exponent)
1148             goto invalid_pname;
1149          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1150          break;
1151
1152       /* GL_ARB_texture_compression */
1153       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1154          if (_mesa_is_format_compressed(texFormat) &&
1155              !_mesa_is_proxy_texture(target)) {
1156             *params = _mesa_format_image_size(texFormat, img->Width,
1157                                               img->Height, img->Depth);
1158          }
1159          else {
1160             _mesa_error(ctx, GL_INVALID_OPERATION,
1161                         "glGetTexLevelParameter[if]v(pname)");
1162          }
1163          break;
1164       case GL_TEXTURE_COMPRESSED:
1165          *params = (GLint) _mesa_is_format_compressed(texFormat);
1166          break;
1167
1168       /* GL_ARB_texture_float */
1169       case GL_TEXTURE_RED_TYPE_ARB:
1170       case GL_TEXTURE_GREEN_TYPE_ARB:
1171       case GL_TEXTURE_BLUE_TYPE_ARB:
1172       case GL_TEXTURE_ALPHA_TYPE_ARB:
1173       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1174       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1175       case GL_TEXTURE_DEPTH_TYPE_ARB:
1176          if (!ctx->Extensions.ARB_texture_float)
1177             goto invalid_pname;
1178          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1179             *params = _mesa_get_format_datatype(texFormat);
1180          else
1181             *params = GL_NONE;
1182          break;
1183
1184       /* GL_ARB_texture_multisample */
1185       case GL_TEXTURE_SAMPLES:
1186          if (!ctx->Extensions.ARB_texture_multisample)
1187             goto invalid_pname;
1188          *params = img->NumSamples;
1189          break;
1190
1191       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1192          if (!ctx->Extensions.ARB_texture_multisample)
1193             goto invalid_pname;
1194          *params = img->FixedSampleLocations;
1195          break;
1196
1197       default:
1198          goto invalid_pname;
1199    }
1200
1201    /* no error if we get here */
1202    return;
1203
1204 invalid_pname:
1205    _mesa_error(ctx, GL_INVALID_ENUM,
1206                "glGetTexLevelParameter[if]v(pname=%s)",
1207                _mesa_lookup_enum_by_nr(pname));
1208 }
1209
1210
1211 static void
1212 get_tex_level_parameter_buffer(struct gl_context *ctx,
1213                                const struct gl_texture_object *texObj,
1214                                GLenum pname, GLint *params)
1215 {
1216    const struct gl_buffer_object *bo = texObj->BufferObject;
1217    mesa_format texFormat = texObj->_BufferObjectFormat;
1218    GLenum internalFormat = texObj->BufferObjectFormat;
1219    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1220
1221    if (!bo) {
1222       /* undefined texture buffer object */
1223       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1224       return;
1225    }
1226
1227    switch (pname) {
1228       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1229          *params = bo->Name;
1230          break;
1231       case GL_TEXTURE_WIDTH:
1232          *params = bo->Size;
1233          break;
1234       case GL_TEXTURE_HEIGHT:
1235       case GL_TEXTURE_DEPTH:
1236       case GL_TEXTURE_BORDER:
1237       case GL_TEXTURE_SHARED_SIZE:
1238       case GL_TEXTURE_COMPRESSED:
1239          *params = 0;
1240          break;
1241       case GL_TEXTURE_INTERNAL_FORMAT:
1242          *params = internalFormat;
1243          break;
1244       case GL_TEXTURE_RED_SIZE:
1245       case GL_TEXTURE_GREEN_SIZE:
1246       case GL_TEXTURE_BLUE_SIZE:
1247       case GL_TEXTURE_ALPHA_SIZE:
1248          if (_mesa_base_format_has_channel(baseFormat, pname))
1249             *params = _mesa_get_format_bits(texFormat, pname);
1250          else
1251             *params = 0;
1252          break;
1253       case GL_TEXTURE_INTENSITY_SIZE:
1254       case GL_TEXTURE_LUMINANCE_SIZE:
1255          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1256             *params = _mesa_get_format_bits(texFormat, pname);
1257             if (*params == 0) {
1258                /* intensity or luminance is probably stored as RGB[A] */
1259                *params = MIN2(_mesa_get_format_bits(texFormat,
1260                                                     GL_TEXTURE_RED_SIZE),
1261                               _mesa_get_format_bits(texFormat,
1262                                                     GL_TEXTURE_GREEN_SIZE));
1263             }
1264          } else {
1265             *params = 0;
1266          }
1267          break;
1268       case GL_TEXTURE_DEPTH_SIZE_ARB:
1269       case GL_TEXTURE_STENCIL_SIZE_EXT:
1270          *params = _mesa_get_format_bits(texFormat, pname);
1271          break;
1272
1273       /* GL_ARB_texture_buffer_range */
1274       case GL_TEXTURE_BUFFER_OFFSET:
1275          if (!ctx->Extensions.ARB_texture_buffer_range)
1276             goto invalid_pname;
1277          *params = texObj->BufferOffset;
1278          break;
1279       case GL_TEXTURE_BUFFER_SIZE:
1280          if (!ctx->Extensions.ARB_texture_buffer_range)
1281             goto invalid_pname;
1282          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1283          break;
1284
1285       /* GL_ARB_texture_compression */
1286       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1287          /* Always illegal for GL_TEXTURE_BUFFER */
1288          _mesa_error(ctx, GL_INVALID_OPERATION,
1289                      "glGetTexLevelParameter[if]v(pname)");
1290          break;
1291
1292       /* GL_ARB_texture_float */
1293       case GL_TEXTURE_RED_TYPE_ARB:
1294       case GL_TEXTURE_GREEN_TYPE_ARB:
1295       case GL_TEXTURE_BLUE_TYPE_ARB:
1296       case GL_TEXTURE_ALPHA_TYPE_ARB:
1297       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1298       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1299       case GL_TEXTURE_DEPTH_TYPE_ARB:
1300          if (!ctx->Extensions.ARB_texture_float)
1301             goto invalid_pname;
1302          if (_mesa_base_format_has_channel(baseFormat, pname))
1303             *params = _mesa_get_format_datatype(texFormat);
1304          else
1305             *params = GL_NONE;
1306          break;
1307
1308       default:
1309          goto invalid_pname;
1310    }
1311
1312    /* no error if we get here */
1313    return;
1314
1315 invalid_pname:
1316    _mesa_error(ctx, GL_INVALID_ENUM,
1317                "glGetTexLevelParameter[if]v(pname=%s)",
1318                _mesa_lookup_enum_by_nr(pname));
1319 }
1320
1321
1322 void GLAPIENTRY
1323 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1324                               GLenum pname, GLfloat *params )
1325 {
1326    GLint iparam;
1327    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1328    *params = (GLfloat) iparam;
1329 }
1330
1331
1332 void GLAPIENTRY
1333 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1334                               GLenum pname, GLint *params )
1335 {
1336    struct gl_texture_object *texObj;
1337    GLint maxLevels;
1338    GET_CURRENT_CONTEXT(ctx);
1339
1340    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1341       _mesa_error(ctx, GL_INVALID_OPERATION,
1342                   "glGetTexLevelParameteriv(current unit)");
1343       return;
1344    }
1345
1346    if (!legal_get_tex_level_parameter_target(ctx, target)) {
1347       _mesa_error(ctx, GL_INVALID_ENUM,
1348                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
1349       return;
1350    }
1351
1352    maxLevels = _mesa_max_texture_levels(ctx, target);
1353    assert(maxLevels != 0);
1354
1355    if (level < 0 || level >= maxLevels) {
1356       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1357       return;
1358    }
1359
1360    texObj = _mesa_get_current_tex_object(ctx, target);
1361
1362    if (target == GL_TEXTURE_BUFFER)
1363       get_tex_level_parameter_buffer(ctx, texObj, pname, params);
1364    else
1365       get_tex_level_parameter_image(ctx, texObj, target, level, pname, params);
1366 }
1367
1368
1369 void GLAPIENTRY
1370 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1371 {
1372    struct gl_texture_object *obj;
1373    GET_CURRENT_CONTEXT(ctx);
1374
1375    obj = get_texobj(ctx, target, GL_TRUE);
1376    if (!obj)
1377       return;
1378
1379    _mesa_lock_texture(ctx, obj);
1380    switch (pname) {
1381       case GL_TEXTURE_MAG_FILTER:
1382          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1383          break;
1384       case GL_TEXTURE_MIN_FILTER:
1385          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1386          break;
1387       case GL_TEXTURE_WRAP_S:
1388          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1389          break;
1390       case GL_TEXTURE_WRAP_T:
1391          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1392          break;
1393       case GL_TEXTURE_WRAP_R:
1394          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1395          break;
1396       case GL_TEXTURE_BORDER_COLOR:
1397          if (!_mesa_is_desktop_gl(ctx))
1398             goto invalid_pname;
1399
1400          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1401             _mesa_update_state_locked(ctx);
1402          if (_mesa_get_clamp_fragment_color(ctx)) {
1403             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1404             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1405             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1406             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1407          }
1408          else {
1409             params[0] = obj->Sampler.BorderColor.f[0];
1410             params[1] = obj->Sampler.BorderColor.f[1];
1411             params[2] = obj->Sampler.BorderColor.f[2];
1412             params[3] = obj->Sampler.BorderColor.f[3];
1413          }
1414          break;
1415       case GL_TEXTURE_RESIDENT:
1416          if (ctx->API != API_OPENGL_COMPAT)
1417             goto invalid_pname;
1418
1419          *params = 1.0F;
1420          break;
1421       case GL_TEXTURE_PRIORITY:
1422          if (ctx->API != API_OPENGL_COMPAT)
1423             goto invalid_pname;
1424
1425          *params = obj->Priority;
1426          break;
1427       case GL_TEXTURE_MIN_LOD:
1428          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1429             goto invalid_pname;
1430
1431          *params = obj->Sampler.MinLod;
1432          break;
1433       case GL_TEXTURE_MAX_LOD:
1434          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1435             goto invalid_pname;
1436
1437          *params = obj->Sampler.MaxLod;
1438          break;
1439       case GL_TEXTURE_BASE_LEVEL:
1440          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1441             goto invalid_pname;
1442
1443          *params = (GLfloat) obj->BaseLevel;
1444          break;
1445       case GL_TEXTURE_MAX_LEVEL:
1446          *params = (GLfloat) obj->MaxLevel;
1447          break;
1448       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1449          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1450             goto invalid_pname;
1451          *params = obj->Sampler.MaxAnisotropy;
1452          break;
1453       case GL_GENERATE_MIPMAP_SGIS:
1454          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1455             goto invalid_pname;
1456
1457          *params = (GLfloat) obj->GenerateMipmap;
1458          break;
1459       case GL_TEXTURE_COMPARE_MODE_ARB:
1460          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1461              && !_mesa_is_gles3(ctx))
1462             goto invalid_pname;
1463          *params = (GLfloat) obj->Sampler.CompareMode;
1464          break;
1465       case GL_TEXTURE_COMPARE_FUNC_ARB:
1466          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1467              && !_mesa_is_gles3(ctx))
1468             goto invalid_pname;
1469          *params = (GLfloat) obj->Sampler.CompareFunc;
1470          break;
1471       case GL_DEPTH_TEXTURE_MODE_ARB:
1472          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1473           * never existed in OpenGL ES.
1474           */
1475          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1476             goto invalid_pname;
1477          *params = (GLfloat) obj->DepthMode;
1478          break;
1479       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1480          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
1481             goto invalid_pname;
1482          *params = (GLfloat)
1483             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1484          break;
1485       case GL_TEXTURE_LOD_BIAS:
1486          if (_mesa_is_gles(ctx))
1487             goto invalid_pname;
1488
1489          *params = obj->Sampler.LodBias;
1490          break;
1491       case GL_TEXTURE_CROP_RECT_OES:
1492          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1493             goto invalid_pname;
1494
1495          params[0] = (GLfloat) obj->CropRect[0];
1496          params[1] = (GLfloat) obj->CropRect[1];
1497          params[2] = (GLfloat) obj->CropRect[2];
1498          params[3] = (GLfloat) obj->CropRect[3];
1499          break;
1500
1501       case GL_TEXTURE_SWIZZLE_R_EXT:
1502       case GL_TEXTURE_SWIZZLE_G_EXT:
1503       case GL_TEXTURE_SWIZZLE_B_EXT:
1504       case GL_TEXTURE_SWIZZLE_A_EXT:
1505          if ((!_mesa_is_desktop_gl(ctx)
1506               || !ctx->Extensions.EXT_texture_swizzle)
1507              && !_mesa_is_gles3(ctx))
1508             goto invalid_pname;
1509          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1510          break;
1511
1512       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1513          if ((!_mesa_is_desktop_gl(ctx)
1514               || !ctx->Extensions.EXT_texture_swizzle)
1515              && !_mesa_is_gles3(ctx)) {
1516             goto invalid_pname;
1517          }
1518          else {
1519             GLuint comp;
1520             for (comp = 0; comp < 4; comp++) {
1521                params[comp] = (GLfloat) obj->Swizzle[comp];
1522             }
1523          }
1524          break;
1525
1526       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1527          if (!_mesa_is_desktop_gl(ctx)
1528              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1529             goto invalid_pname;
1530          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1531          break;
1532
1533       case GL_TEXTURE_IMMUTABLE_FORMAT:
1534          *params = (GLfloat) obj->Immutable;
1535          break;
1536
1537       case GL_TEXTURE_IMMUTABLE_LEVELS:
1538          if (_mesa_is_gles3(ctx) ||
1539              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1540             *params = (GLfloat) obj->ImmutableLevels;
1541          else
1542             goto invalid_pname;
1543          break;
1544
1545       case GL_TEXTURE_VIEW_MIN_LEVEL:
1546          if (!ctx->Extensions.ARB_texture_view)
1547             goto invalid_pname;
1548          *params = (GLfloat) obj->MinLevel;
1549          break;
1550
1551       case GL_TEXTURE_VIEW_NUM_LEVELS:
1552          if (!ctx->Extensions.ARB_texture_view)
1553             goto invalid_pname;
1554          *params = (GLfloat) obj->NumLevels;
1555          break;
1556
1557       case GL_TEXTURE_VIEW_MIN_LAYER:
1558          if (!ctx->Extensions.ARB_texture_view)
1559             goto invalid_pname;
1560          *params = (GLfloat) obj->MinLayer;
1561          break;
1562
1563       case GL_TEXTURE_VIEW_NUM_LAYERS:
1564          if (!ctx->Extensions.ARB_texture_view)
1565             goto invalid_pname;
1566          *params = (GLfloat) obj->NumLayers;
1567          break;
1568
1569       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1570          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1571             goto invalid_pname;
1572          *params = (GLfloat) obj->RequiredTextureImageUnits;
1573          break;
1574
1575       case GL_TEXTURE_SRGB_DECODE_EXT:
1576          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1577             goto invalid_pname;
1578          *params = (GLfloat) obj->Sampler.sRGBDecode;
1579          break;
1580
1581       default:
1582          goto invalid_pname;
1583    }
1584
1585    /* no error if we get here */
1586    _mesa_unlock_texture(ctx, obj);
1587    return;
1588
1589 invalid_pname:
1590    _mesa_unlock_texture(ctx, obj);
1591    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1592 }
1593
1594
1595 void GLAPIENTRY
1596 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1597 {
1598    struct gl_texture_object *obj;
1599    GET_CURRENT_CONTEXT(ctx);
1600
1601    obj = get_texobj(ctx, target, GL_TRUE);
1602    if (!obj)
1603       return;
1604
1605    _mesa_lock_texture(ctx, obj);
1606    switch (pname) {
1607       case GL_TEXTURE_MAG_FILTER:
1608          *params = (GLint) obj->Sampler.MagFilter;
1609          break;
1610       case GL_TEXTURE_MIN_FILTER:
1611          *params = (GLint) obj->Sampler.MinFilter;
1612          break;
1613       case GL_TEXTURE_WRAP_S:
1614          *params = (GLint) obj->Sampler.WrapS;
1615          break;
1616       case GL_TEXTURE_WRAP_T:
1617          *params = (GLint) obj->Sampler.WrapT;
1618          break;
1619       case GL_TEXTURE_WRAP_R:
1620          *params = (GLint) obj->Sampler.WrapR;
1621          break;
1622       case GL_TEXTURE_BORDER_COLOR:
1623          if (!_mesa_is_desktop_gl(ctx))
1624             goto invalid_pname;
1625
1626          {
1627             GLfloat b[4];
1628             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1629             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1630             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1631             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1632             params[0] = FLOAT_TO_INT(b[0]);
1633             params[1] = FLOAT_TO_INT(b[1]);
1634             params[2] = FLOAT_TO_INT(b[2]);
1635             params[3] = FLOAT_TO_INT(b[3]);
1636          }
1637          break;
1638       case GL_TEXTURE_RESIDENT:
1639          if (ctx->API != API_OPENGL_COMPAT)
1640             goto invalid_pname;
1641
1642          *params = 1;
1643          break;
1644       case GL_TEXTURE_PRIORITY:
1645          if (ctx->API != API_OPENGL_COMPAT)
1646             goto invalid_pname;
1647
1648          *params = FLOAT_TO_INT(obj->Priority);
1649          break;
1650       case GL_TEXTURE_MIN_LOD:
1651          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1652             goto invalid_pname;
1653
1654          *params = (GLint) obj->Sampler.MinLod;
1655          break;
1656       case GL_TEXTURE_MAX_LOD:
1657          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1658             goto invalid_pname;
1659
1660          *params = (GLint) obj->Sampler.MaxLod;
1661          break;
1662       case GL_TEXTURE_BASE_LEVEL:
1663          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1664             goto invalid_pname;
1665
1666          *params = obj->BaseLevel;
1667          break;
1668       case GL_TEXTURE_MAX_LEVEL:
1669          *params = obj->MaxLevel;
1670          break;
1671       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1672          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1673             goto invalid_pname;
1674          *params = (GLint) obj->Sampler.MaxAnisotropy;
1675          break;
1676       case GL_GENERATE_MIPMAP_SGIS:
1677          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1678             goto invalid_pname;
1679
1680          *params = (GLint) obj->GenerateMipmap;
1681          break;
1682       case GL_TEXTURE_COMPARE_MODE_ARB:
1683          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1684              && !_mesa_is_gles3(ctx))
1685             goto invalid_pname;
1686          *params = (GLint) obj->Sampler.CompareMode;
1687          break;
1688       case GL_TEXTURE_COMPARE_FUNC_ARB:
1689          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1690              && !_mesa_is_gles3(ctx))
1691             goto invalid_pname;
1692          *params = (GLint) obj->Sampler.CompareFunc;
1693          break;
1694       case GL_DEPTH_TEXTURE_MODE_ARB:
1695          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1696             goto invalid_pname;
1697          *params = (GLint) obj->DepthMode;
1698          break;
1699       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1700          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
1701             goto invalid_pname;
1702          *params = (GLint)
1703             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1704          break;
1705       case GL_TEXTURE_LOD_BIAS:
1706          if (_mesa_is_gles(ctx))
1707             goto invalid_pname;
1708
1709          /* GL spec 'Data Conversions' section specifies that floating-point
1710           * value in integer Get function is rounded to nearest integer
1711           */
1712          *params = IROUND(obj->Sampler.LodBias);
1713          break;
1714       case GL_TEXTURE_CROP_RECT_OES:
1715          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1716             goto invalid_pname;
1717
1718          params[0] = obj->CropRect[0];
1719          params[1] = obj->CropRect[1];
1720          params[2] = obj->CropRect[2];
1721          params[3] = obj->CropRect[3];
1722          break;
1723       case GL_TEXTURE_SWIZZLE_R_EXT:
1724       case GL_TEXTURE_SWIZZLE_G_EXT:
1725       case GL_TEXTURE_SWIZZLE_B_EXT:
1726       case GL_TEXTURE_SWIZZLE_A_EXT:
1727          if ((!_mesa_is_desktop_gl(ctx)
1728               || !ctx->Extensions.EXT_texture_swizzle)
1729              && !_mesa_is_gles3(ctx))
1730             goto invalid_pname;
1731          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1732          break;
1733
1734       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1735          if ((!_mesa_is_desktop_gl(ctx)
1736               || !ctx->Extensions.EXT_texture_swizzle)
1737              && !_mesa_is_gles3(ctx))
1738             goto invalid_pname;
1739          COPY_4V(params, obj->Swizzle);
1740          break;
1741
1742       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1743          if (!_mesa_is_desktop_gl(ctx)
1744              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1745             goto invalid_pname;
1746          *params = (GLint) obj->Sampler.CubeMapSeamless;
1747          break;
1748
1749       case GL_TEXTURE_IMMUTABLE_FORMAT:
1750          *params = (GLint) obj->Immutable;
1751          break;
1752
1753       case GL_TEXTURE_IMMUTABLE_LEVELS:
1754          if (_mesa_is_gles3(ctx) ||
1755              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1756             *params = obj->ImmutableLevels;
1757          else
1758             goto invalid_pname;
1759          break;
1760
1761       case GL_TEXTURE_VIEW_MIN_LEVEL:
1762          if (!ctx->Extensions.ARB_texture_view)
1763             goto invalid_pname;
1764          *params = (GLint) obj->MinLevel;
1765          break;
1766
1767       case GL_TEXTURE_VIEW_NUM_LEVELS:
1768          if (!ctx->Extensions.ARB_texture_view)
1769             goto invalid_pname;
1770          *params = (GLint) obj->NumLevels;
1771          break;
1772
1773       case GL_TEXTURE_VIEW_MIN_LAYER:
1774          if (!ctx->Extensions.ARB_texture_view)
1775             goto invalid_pname;
1776          *params = (GLint) obj->MinLayer;
1777          break;
1778
1779       case GL_TEXTURE_VIEW_NUM_LAYERS:
1780          if (!ctx->Extensions.ARB_texture_view)
1781             goto invalid_pname;
1782          *params = (GLint) obj->NumLayers;
1783          break;
1784
1785       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1786          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1787             goto invalid_pname;
1788          *params = obj->RequiredTextureImageUnits;
1789          break;
1790
1791       case GL_TEXTURE_SRGB_DECODE_EXT:
1792          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1793             goto invalid_pname;
1794          *params = obj->Sampler.sRGBDecode;
1795          break;
1796
1797       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
1798          if (!ctx->Extensions.ARB_shader_image_load_store)
1799             goto invalid_pname;
1800          *params = obj->ImageFormatCompatibilityType;
1801          break;
1802
1803       default:
1804          goto invalid_pname;
1805    }
1806
1807    /* no error if we get here */
1808    _mesa_unlock_texture(ctx, obj);
1809    return;
1810
1811 invalid_pname:
1812    _mesa_unlock_texture(ctx, obj);
1813    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1814 }
1815
1816
1817 /** New in GL 3.0 */
1818 void GLAPIENTRY
1819 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1820 {
1821    struct gl_texture_object *texObj;
1822    GET_CURRENT_CONTEXT(ctx);
1823
1824    texObj = get_texobj(ctx, target, GL_TRUE);
1825    if (!texObj)
1826       return;
1827
1828    switch (pname) {
1829    case GL_TEXTURE_BORDER_COLOR:
1830       COPY_4V(params, texObj->Sampler.BorderColor.i);
1831       break;
1832    default:
1833       _mesa_GetTexParameteriv(target, pname, params);
1834    }
1835 }
1836
1837
1838 /** New in GL 3.0 */
1839 void GLAPIENTRY
1840 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1841 {
1842    struct gl_texture_object *texObj;
1843    GET_CURRENT_CONTEXT(ctx);
1844
1845    texObj = get_texobj(ctx, target, GL_TRUE);
1846    if (!texObj)
1847       return;
1848
1849    switch (pname) {
1850    case GL_TEXTURE_BORDER_COLOR:
1851       COPY_4V(params, texObj->Sampler.BorderColor.i);
1852       break;
1853    default:
1854       {
1855          GLint ip[4];
1856          _mesa_GetTexParameteriv(target, pname, ip);
1857          params[0] = ip[0];
1858          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1859              pname == GL_TEXTURE_CROP_RECT_OES) {
1860             params[1] = ip[1];
1861             params[2] = ip[2];
1862             params[3] = ip[3];
1863          }
1864       }
1865    }
1866 }