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
 130    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 131       _mesa_error(ctx, GL_INVALID_OPERATION,
 132                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 133       return NULL;
 134    }
 135
 136    texUnit = _mesa_get_current_tex_unit(ctx);
 137
 138    switch (target) {
 139    case GL_TEXTURE_1D:
 140       if (_mesa_is_desktop_gl(ctx))
 141          return texUnit->CurrentTex[TEXTURE_1D_INDEX];
 142       break;
 143    case GL_TEXTURE_2D:
 144       return texUnit->CurrentTex[TEXTURE_2D_INDEX];
 145    case GL_TEXTURE_3D:
 146       if (ctx->API != API_OPENGLES)
 147          return texUnit->CurrentTex[TEXTURE_3D_INDEX];
 148       break;
 149    case GL_TEXTURE_CUBE_MAP:
 150       if (ctx->Extensions.ARB_texture_cube_map) {
 151          return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
 152       }
 153       break;
 154    case GL_TEXTURE_RECTANGLE_NV:
 155       if (_mesa_is_desktop_gl(ctx)
 156           && ctx->Extensions.NV_texture_rectangle) {
 157          return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
 158       }
 159       break;
 160    case GL_TEXTURE_1D_ARRAY_EXT:
 161       if (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array) {
 162          return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
 163       }
 164       break;
 165    case GL_TEXTURE_2D_ARRAY_EXT:
 166       if ((_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx))
 167           && ctx->Extensions.EXT_texture_array) {
 168          return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
 169       }
 170       break;
 171    case GL_TEXTURE_EXTERNAL_OES:
 172       if (_mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external) {
 173          return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX];
 174       }
 175       break;
 176    case GL_TEXTURE_CUBE_MAP_ARRAY:
 177       if (ctx->Extensions.ARB_texture_cube_map_array) {
 178          return texUnit->CurrentTex[TEXTURE_CUBE_ARRAY_INDEX];
 179       }
 180       break;
 181    case GL_TEXTURE_2D_MULTISAMPLE:
 182       if (ctx->Extensions.ARB_texture_multisample) {
 183          return texUnit->CurrentTex[TEXTURE_2D_MULTISAMPLE_INDEX];
 184       }
 185       break;
 186    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 187       if (ctx->Extensions.ARB_texture_multisample) {
 188          return texUnit->CurrentTex[TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX];
 189       }
 190       break;
 191    default:
 192       ;
 193    }
 194
 195    _mesa_error(ctx, GL_INVALID_ENUM,
 196                   "gl%sTexParameter(target)", get ? "Get" : "");
 197    return NULL;
 198 }
 199
 200
 201 /**
 202  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 203  * \return -1 if error.
 204  */
 205 static GLint
 206 comp_to_swizzle(GLenum comp)
 207 {
 208    switch (comp) {
 209    case GL_RED:
 210       return SWIZZLE_X;
 211    case GL_GREEN:
 212       return SWIZZLE_Y;
 213    case GL_BLUE:
 214       return SWIZZLE_Z;
 215    case GL_ALPHA:
 216       return SWIZZLE_W;
 217    case GL_ZERO:
 218       return SWIZZLE_ZERO;
 219    case GL_ONE:
 220       return SWIZZLE_ONE;
 221    default:
 222       return -1;
 223    }
 224 }
 225
 226
 227 static void
 228 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 229 {
 230    ASSERT(comp < 4);
 231    ASSERT(swz <= SWIZZLE_NIL);
 232    {
 233       GLuint mask = 0x7 << (3 * comp);
 234       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 235       *swizzle = s;
 236    }
 237 }
 238
 239
 240 /**
 241  * This is called just prior to changing any texture object state which
 242  * will not effect texture completeness.
 243  */
 244 static inline void
 245 flush(struct gl_context *ctx)
 246 {
 247    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 248 }
 249
 250
 251 /**
 252  * This is called just prior to changing any texture object state which
 253  * can effect texture completeness (texture base level, max level).
 254  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 255  * state flag and then mark the texture object as 'incomplete' so that any
 256  * per-texture derived state gets recomputed.
 257  */
 258 static inline void
 259 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 260 {
 261    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 262    _mesa_dirty_texobj(ctx, texObj);
 263 }
 264
 265
 266 static GLboolean
 267 target_allows_setting_sampler_parameters(GLenum target)
 268 {
 269    switch (target) {
 270    case GL_TEXTURE_2D_MULTISAMPLE:
 271    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 272       return GL_FALSE;
 273
 274    default:
 275       return GL_TRUE;
 276    }
 277 }
 278
 279
 280 /**
 281  * Set an integer-valued texture parameter
 282  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 283  */
 284 static GLboolean
 285 set_tex_parameteri(struct gl_context *ctx,
 286                    struct gl_texture_object *texObj,
 287                    GLenum pname, const GLint *params)
 288 {
 289    switch (pname) {
 290    case GL_TEXTURE_MIN_FILTER:
 291       if (!target_allows_setting_sampler_parameters(texObj->Target))
 292          goto invalid_operation;
 293
 294       if (texObj->Sampler.MinFilter == params[0])
 295          return GL_FALSE;
 296       switch (params[0]) {
 297       case GL_NEAREST:
 298       case GL_LINEAR:
 299          flush(ctx);
 300          texObj->Sampler.MinFilter = params[0];
 301          return GL_TRUE;
 302       case GL_NEAREST_MIPMAP_NEAREST:
 303       case GL_LINEAR_MIPMAP_NEAREST:
 304       case GL_NEAREST_MIPMAP_LINEAR:
 305       case GL_LINEAR_MIPMAP_LINEAR:
 306          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 307              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 308             flush(ctx);
 309             texObj->Sampler.MinFilter = params[0];
 310             return GL_TRUE;
 311          }
 312          /* fall-through */
 313       default:
 314          goto invalid_param;
 315       }
 316       return GL_FALSE;
 317
 318    case GL_TEXTURE_MAG_FILTER:
 319       if (!target_allows_setting_sampler_parameters(texObj->Target))
 320          goto invalid_operation;
 321
 322       if (texObj->Sampler.MagFilter == params[0])
 323          return GL_FALSE;
 324       switch (params[0]) {
 325       case GL_NEAREST:
 326       case GL_LINEAR:
 327          flush(ctx); /* does not effect completeness */
 328          texObj->Sampler.MagFilter = params[0];
 329          return GL_TRUE;
 330       default:
 331          goto invalid_param;
 332       }
 333       return GL_FALSE;
 334
 335    case GL_TEXTURE_WRAP_S:
 336       if (!target_allows_setting_sampler_parameters(texObj->Target))
 337          goto invalid_operation;
 338
 339       if (texObj->Sampler.WrapS == params[0])
 340          return GL_FALSE;
 341       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 342          flush(ctx);
 343          texObj->Sampler.WrapS = params[0];
 344          return GL_TRUE;
 345       }
 346       return GL_FALSE;
 347
 348    case GL_TEXTURE_WRAP_T:
 349       if (!target_allows_setting_sampler_parameters(texObj->Target))
 350          goto invalid_operation;
 351
 352       if (texObj->Sampler.WrapT == params[0])
 353          return GL_FALSE;
 354       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 355          flush(ctx);
 356          texObj->Sampler.WrapT = params[0];
 357          return GL_TRUE;
 358       }
 359       return GL_FALSE;
 360
 361    case GL_TEXTURE_WRAP_R:
 362       if (!target_allows_setting_sampler_parameters(texObj->Target))
 363          goto invalid_operation;
 364
 365       if (texObj->Sampler.WrapR == params[0])
 366          return GL_FALSE;
 367       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 368          flush(ctx);
 369          texObj->Sampler.WrapR = params[0];
 370          return GL_TRUE;
 371       }
 372       return GL_FALSE;
 373
 374    case GL_TEXTURE_BASE_LEVEL:
 375       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 376          goto invalid_pname;
 377
 378       if (texObj->BaseLevel == params[0])
 379          return GL_FALSE;
 380
 381       if ((texObj->Target == GL_TEXTURE_2D_MULTISAMPLE ||
 382            texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) && params[0] != 0)
 383          goto invalid_operation;
 384
 385       if (params[0] < 0 ||
 386           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
 387          _mesa_error(ctx, GL_INVALID_VALUE,
 388                      "glTexParameter(param=%d)", params[0]);
 389          return GL_FALSE;
 390       }
 391       incomplete(ctx, texObj);
 392
 393       /** See note about ARB_texture_storage below */
 394       if (texObj->Immutable)
 395          texObj->BaseLevel = MIN2(texObj->ImmutableLevels - 1, params[0]);
 396       else
 397          texObj->BaseLevel = params[0];
 398
 399       return GL_TRUE;
 400
 401    case GL_TEXTURE_MAX_LEVEL:
 402       if (texObj->MaxLevel == params[0])
 403          return GL_FALSE;
 404
 405       if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
 406          _mesa_error(ctx, GL_INVALID_VALUE,
 407                      "glTexParameter(param=%d)", params[0]);
 408          return GL_FALSE;
 409       }
 410       incomplete(ctx, texObj);
 411
 412       /** From ARB_texture_storage:
 413        * However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then level_base is
 414        * clamped to the range [0, <levels> - 1] and level_max is then clamped to
 415        * the range [level_base, <levels> - 1], where <levels> is the parameter
 416        * passed the call to TexStorage* for the texture object.
 417        */
 418       if (texObj->Immutable)
 419           texObj->MaxLevel = CLAMP(params[0], texObj->BaseLevel,
 420                                    texObj->ImmutableLevels - 1);
 421       else
 422          texObj->MaxLevel = params[0];
 423
 424       return GL_TRUE;
 425
 426    case GL_GENERATE_MIPMAP_SGIS:
 427       if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
 428          goto invalid_pname;
 429
 430       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 431          goto invalid_param;
 432       if (texObj->GenerateMipmap != params[0]) {
 433          /* no flush() */
 434          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 435          return GL_TRUE;
 436       }
 437       return GL_FALSE;
 438
 439    case GL_TEXTURE_COMPARE_MODE_ARB:
 440       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 441           || _mesa_is_gles3(ctx)) {
 442
 443          if (!target_allows_setting_sampler_parameters(texObj->Target))
 444             goto invalid_operation;
 445
 446          if (texObj->Sampler.CompareMode == params[0])
 447             return GL_FALSE;
 448          if (params[0] == GL_NONE ||
 449              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 450             flush(ctx);
 451             texObj->Sampler.CompareMode = params[0];
 452             return GL_TRUE;
 453          }
 454          goto invalid_param;
 455       }
 456       goto invalid_pname;
 457
 458    case GL_TEXTURE_COMPARE_FUNC_ARB:
 459       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 460           || _mesa_is_gles3(ctx)) {
 461
 462          if (!target_allows_setting_sampler_parameters(texObj->Target))
 463             goto invalid_operation;
 464
 465          if (texObj->Sampler.CompareFunc == params[0])
 466             return GL_FALSE;
 467          switch (params[0]) {
 468          case GL_LEQUAL:
 469          case GL_GEQUAL:
 470          case GL_EQUAL:
 471          case GL_NOTEQUAL:
 472          case GL_LESS:
 473          case GL_GREATER:
 474          case GL_ALWAYS:
 475          case GL_NEVER:
 476             flush(ctx);
 477             texObj->Sampler.CompareFunc = params[0];
 478             return GL_TRUE;
 479          default:
 480             goto invalid_param;
 481          }
 482       }
 483       goto invalid_pname;
 484
 485    case GL_DEPTH_TEXTURE_MODE_ARB:
 486       /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has never
 487        * existed in OpenGL ES.
 488        */
 489       if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_texture) {
 490          if (texObj->DepthMode == params[0])
 491             return GL_FALSE;
 492          if (params[0] == GL_LUMINANCE ||
 493              params[0] == GL_INTENSITY ||
 494              params[0] == GL_ALPHA ||
 495              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 496             flush(ctx);
 497             texObj->DepthMode = params[0];
 498             return GL_TRUE;
 499          }
 500          goto invalid_param;
 501       }
 502       goto invalid_pname;
 503
 504    case GL_TEXTURE_CROP_RECT_OES:
 505       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 506          goto invalid_pname;
 507
 508       texObj->CropRect[0] = params[0];
 509       texObj->CropRect[1] = params[1];
 510       texObj->CropRect[2] = params[2];
 511       texObj->CropRect[3] = params[3];
 512       return GL_TRUE;
 513
 514    case GL_TEXTURE_SWIZZLE_R_EXT:
 515    case GL_TEXTURE_SWIZZLE_G_EXT:
 516    case GL_TEXTURE_SWIZZLE_B_EXT:
 517    case GL_TEXTURE_SWIZZLE_A_EXT:
 518       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 519           || _mesa_is_gles3(ctx)) {
 520          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 521          const GLint swz = comp_to_swizzle(params[0]);
 522          if (swz < 0) {
 523             _mesa_error(ctx, GL_INVALID_OPERATION,
 524                         "glTexParameter(swizzle 0x%x)", params[0]);
 525             return GL_FALSE;
 526          }
 527          ASSERT(comp < 4);
 528
 529          flush(ctx);
 530          texObj->Swizzle[comp] = params[0];
 531          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 532          return GL_TRUE;
 533       }
 534       goto invalid_pname;
 535
 536    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 537       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 538           || _mesa_is_gles3(ctx)) {
 539          GLuint comp;
 540          flush(ctx);
 541          for (comp = 0; comp < 4; comp++) {
 542             const GLint swz = comp_to_swizzle(params[comp]);
 543             if (swz >= 0) {
 544                texObj->Swizzle[comp] = params[comp];
 545                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 546             }
 547             else {
 548                _mesa_error(ctx, GL_INVALID_OPERATION,
 549                            "glTexParameter(swizzle 0x%x)", params[comp]);
 550                return GL_FALSE;
 551             }
 552          }
 553          return GL_TRUE;
 554       }
 555       goto invalid_pname;
 556
 557    case GL_TEXTURE_SRGB_DECODE_EXT:
 558       if (_mesa_is_desktop_gl(ctx)
 559           && ctx->Extensions.EXT_texture_sRGB_decode) {
 560          GLenum decode = params[0];
 561
 562          if (!target_allows_setting_sampler_parameters(texObj->Target))
 563             goto invalid_operation;
 564
 565          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 566             if (texObj->Sampler.sRGBDecode != decode) {
 567                flush(ctx);
 568                texObj->Sampler.sRGBDecode = decode;
 569             }
 570             return GL_TRUE;
 571          }
 572       }
 573       goto invalid_pname;
 574
 575    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 576       if (_mesa_is_desktop_gl(ctx)
 577           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 578          GLenum param = params[0];
 579
 580          if (!target_allows_setting_sampler_parameters(texObj->Target))
 581             goto invalid_operation;
 582
 583          if (param != GL_TRUE && param != GL_FALSE) {
 584             goto invalid_param;
 585          }
 586          if (param != texObj->Sampler.CubeMapSeamless) {
 587             flush(ctx);
 588             texObj->Sampler.CubeMapSeamless = param;
 589          }
 590          return GL_TRUE;
 591       }
 592       goto invalid_pname;
 593
 594    default:
 595       goto invalid_pname;
 596    }
 597
 598 invalid_pname:
 599    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 600                _mesa_lookup_enum_by_nr(pname));
 601    return GL_FALSE;
 602
 603 invalid_param:
 604    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 605                _mesa_lookup_enum_by_nr(params[0]));
 606    return GL_FALSE;
 607
 608 invalid_operation:
 609    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 610                _mesa_lookup_enum_by_nr(pname));
 611    return GL_FALSE;
 612 }
 613
 614
 615 /**
 616  * Set a float-valued texture parameter
 617  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 618  */
 619 static GLboolean
 620 set_tex_parameterf(struct gl_context *ctx,
 621                    struct gl_texture_object *texObj,
 622                    GLenum pname, const GLfloat *params)
 623 {
 624    switch (pname) {
 625    case GL_TEXTURE_MIN_LOD:
 626       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 627          goto invalid_pname;
 628
 629       if (!target_allows_setting_sampler_parameters(texObj->Target))
 630          goto invalid_operation;
 631
 632       if (texObj->Sampler.MinLod == params[0])
 633          return GL_FALSE;
 634       flush(ctx);
 635       texObj->Sampler.MinLod = params[0];
 636       return GL_TRUE;
 637
 638    case GL_TEXTURE_MAX_LOD:
 639       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 640          goto invalid_pname;
 641
 642       if (!target_allows_setting_sampler_parameters(texObj->Target))
 643          goto invalid_operation;
 644
 645       if (texObj->Sampler.MaxLod == params[0])
 646          return GL_FALSE;
 647       flush(ctx);
 648       texObj->Sampler.MaxLod = params[0];
 649       return GL_TRUE;
 650
 651    case GL_TEXTURE_PRIORITY:
 652       if (ctx->API != API_OPENGL_COMPAT)
 653          goto invalid_pname;
 654
 655       flush(ctx);
 656       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 657       return GL_TRUE;
 658
 659    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 660       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 661          if (!target_allows_setting_sampler_parameters(texObj->Target))
 662             goto invalid_operation;
 663
 664          if (texObj->Sampler.MaxAnisotropy == params[0])
 665             return GL_FALSE;
 666          if (params[0] < 1.0) {
 667             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 668             return GL_FALSE;
 669          }
 670          flush(ctx);
 671          /* clamp to max, that's what NVIDIA does */
 672          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 673                                       ctx->Const.MaxTextureMaxAnisotropy);
 674          return GL_TRUE;
 675       }
 676       else {
 677          static GLuint count = 0;
 678          if (count++ < 10)
 679             goto invalid_pname;
 680       }
 681       return GL_FALSE;
 682
 683    case GL_TEXTURE_LOD_BIAS:
 684       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 685       if (_mesa_is_gles(ctx))
 686          goto invalid_pname;
 687
 688       if (!target_allows_setting_sampler_parameters(texObj->Target))
 689          goto invalid_operation;
 690
 691       if (texObj->Sampler.LodBias != params[0]) {
 692          flush(ctx);
 693          texObj->Sampler.LodBias = params[0];
 694          return GL_TRUE;
 695       }
 696       break;
 697
 698    case GL_TEXTURE_BORDER_COLOR:
 699       if (!_mesa_is_desktop_gl(ctx))
 700          goto invalid_pname;
 701
 702       if (!target_allows_setting_sampler_parameters(texObj->Target))
 703          goto invalid_operation;
 704
 705       flush(ctx);
 706       /* ARB_texture_float disables clamping */
 707       if (ctx->Extensions.ARB_texture_float) {
 708          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 709          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 710          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 711          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 712       } else {
 713          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 714          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 715          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 716          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 717       }
 718       return GL_TRUE;
 719
 720    default:
 721       goto invalid_pname;
 722    }
 723    return GL_FALSE;
 724
 725 invalid_pname:
 726    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 727                _mesa_lookup_enum_by_nr(pname));
 728    return GL_FALSE;
 729
 730 invalid_operation:
 731    _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(pname=%s)",
 732                _mesa_lookup_enum_by_nr(pname));
 733    return GL_FALSE;
 734 }
 735
 736
 737 void GLAPIENTRY
 738 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 739 {
 740    GLboolean need_update;
 741    struct gl_texture_object *texObj;
 742    GET_CURRENT_CONTEXT(ctx);
 743
 744    texObj = get_texobj(ctx, target, GL_FALSE);
 745    if (!texObj)
 746       return;
 747
 748    switch (pname) {
 749    case GL_TEXTURE_MIN_FILTER:
 750    case GL_TEXTURE_MAG_FILTER:
 751    case GL_TEXTURE_WRAP_S:
 752    case GL_TEXTURE_WRAP_T:
 753    case GL_TEXTURE_WRAP_R:
 754    case GL_TEXTURE_BASE_LEVEL:
 755    case GL_TEXTURE_MAX_LEVEL:
 756    case GL_GENERATE_MIPMAP_SGIS:
 757    case GL_TEXTURE_COMPARE_MODE_ARB:
 758    case GL_TEXTURE_COMPARE_FUNC_ARB:
 759    case GL_DEPTH_TEXTURE_MODE_ARB:
 760    case GL_TEXTURE_SRGB_DECODE_EXT:
 761    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 762    case GL_TEXTURE_SWIZZLE_R_EXT:
 763    case GL_TEXTURE_SWIZZLE_G_EXT:
 764    case GL_TEXTURE_SWIZZLE_B_EXT:
 765    case GL_TEXTURE_SWIZZLE_A_EXT:
 766       {
 767          GLint p[4];
 768          p[0] = (param > 0) ?
 769                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 770                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 771
 772          p[1] = p[2] = p[3] = 0;
 773          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 774       }
 775       break;
 776    default:
 777       {
 778          /* this will generate an error if pname is illegal */
 779          GLfloat p[4];
 780          p[0] = param;
 781          p[1] = p[2] = p[3] = 0.0F;
 782          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 783       }
 784    }
 785
 786    if (ctx->Driver.TexParameter && need_update) {
 787       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 788    }
 789 }
 790
 791
 792 void GLAPIENTRY
 793 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 794 {
 795    GLboolean need_update;
 796    struct gl_texture_object *texObj;
 797    GET_CURRENT_CONTEXT(ctx);
 798
 799    texObj = get_texobj(ctx, target, GL_FALSE);
 800    if (!texObj)
 801       return;
 802
 803    switch (pname) {
 804    case GL_TEXTURE_MIN_FILTER:
 805    case GL_TEXTURE_MAG_FILTER:
 806    case GL_TEXTURE_WRAP_S:
 807    case GL_TEXTURE_WRAP_T:
 808    case GL_TEXTURE_WRAP_R:
 809    case GL_TEXTURE_BASE_LEVEL:
 810    case GL_TEXTURE_MAX_LEVEL:
 811    case GL_GENERATE_MIPMAP_SGIS:
 812    case GL_TEXTURE_COMPARE_MODE_ARB:
 813    case GL_TEXTURE_COMPARE_FUNC_ARB:
 814    case GL_DEPTH_TEXTURE_MODE_ARB:
 815    case GL_TEXTURE_SRGB_DECODE_EXT:
 816    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 817       {
 818          /* convert float param to int */
 819          GLint p[4];
 820          p[0] = (GLint) params[0];
 821          p[1] = p[2] = p[3] = 0;
 822          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 823       }
 824       break;
 825    case GL_TEXTURE_CROP_RECT_OES:
 826       {
 827          /* convert float params to int */
 828          GLint iparams[4];
 829          iparams[0] = (GLint) params[0];
 830          iparams[1] = (GLint) params[1];
 831          iparams[2] = (GLint) params[2];
 832          iparams[3] = (GLint) params[3];
 833          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 834       }
 835       break;
 836    case GL_TEXTURE_SWIZZLE_R_EXT:
 837    case GL_TEXTURE_SWIZZLE_G_EXT:
 838    case GL_TEXTURE_SWIZZLE_B_EXT:
 839    case GL_TEXTURE_SWIZZLE_A_EXT:
 840    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 841       {
 842          GLint p[4] = {0, 0, 0, 0};
 843          p[0] = (GLint) params[0];
 844          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 845             p[1] = (GLint) params[1];
 846             p[2] = (GLint) params[2];
 847             p[3] = (GLint) params[3];
 848          }
 849          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 850       }
 851       break;
 852    default:
 853       /* this will generate an error if pname is illegal */
 854       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 855    }
 856
 857    if (ctx->Driver.TexParameter && need_update) {
 858       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 859    }
 860 }
 861
 862
 863 void GLAPIENTRY
 864 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 865 {
 866    GLboolean need_update;
 867    struct gl_texture_object *texObj;
 868    GET_CURRENT_CONTEXT(ctx);
 869
 870    texObj = get_texobj(ctx, target, GL_FALSE);
 871    if (!texObj)
 872       return;
 873
 874    switch (pname) {
 875    case GL_TEXTURE_MIN_LOD:
 876    case GL_TEXTURE_MAX_LOD:
 877    case GL_TEXTURE_PRIORITY:
 878    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 879    case GL_TEXTURE_LOD_BIAS:
 880    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 881       {
 882          GLfloat fparam[4];
 883          fparam[0] = (GLfloat) param;
 884          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 885          /* convert int param to float */
 886          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 887       }
 888       break;
 889    default:
 890       /* this will generate an error if pname is illegal */
 891       {
 892          GLint iparam[4];
 893          iparam[0] = param;
 894          iparam[1] = iparam[2] = iparam[3] = 0;
 895          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 896       }
 897    }
 898
 899    if (ctx->Driver.TexParameter && need_update) {
 900       GLfloat fparam = (GLfloat) param;
 901       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 902    }
 903 }
 904
 905
 906 void GLAPIENTRY
 907 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 908 {
 909    GLboolean need_update;
 910    struct gl_texture_object *texObj;
 911    GET_CURRENT_CONTEXT(ctx);
 912
 913    texObj = get_texobj(ctx, target, GL_FALSE);
 914    if (!texObj)
 915       return;
 916
 917    switch (pname) {
 918    case GL_TEXTURE_BORDER_COLOR:
 919       {
 920          /* convert int params to float */
 921          GLfloat fparams[4];
 922          fparams[0] = INT_TO_FLOAT(params[0]);
 923          fparams[1] = INT_TO_FLOAT(params[1]);
 924          fparams[2] = INT_TO_FLOAT(params[2]);
 925          fparams[3] = INT_TO_FLOAT(params[3]);
 926          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 927       }
 928       break;
 929    case GL_TEXTURE_MIN_LOD:
 930    case GL_TEXTURE_MAX_LOD:
 931    case GL_TEXTURE_PRIORITY:
 932    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 933    case GL_TEXTURE_LOD_BIAS:
 934    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 935       {
 936          /* convert int param to float */
 937          GLfloat fparams[4];
 938          fparams[0] = (GLfloat) params[0];
 939          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 940          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 941       }
 942       break;
 943    default:
 944       /* this will generate an error if pname is illegal */
 945       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 946    }
 947
 948    if (ctx->Driver.TexParameter && need_update) {
 949       GLfloat fparams[4];
 950       fparams[0] = INT_TO_FLOAT(params[0]);
 951       if (pname == GL_TEXTURE_BORDER_COLOR ||
 952           pname == GL_TEXTURE_CROP_RECT_OES) {
 953          fparams[1] = INT_TO_FLOAT(params[1]);
 954          fparams[2] = INT_TO_FLOAT(params[2]);
 955          fparams[3] = INT_TO_FLOAT(params[3]);
 956       }
 957       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 958    }
 959 }
 960
 961
 962 /**
 963  * Set tex parameter to integer value(s).  Primarily intended to set
 964  * integer-valued texture border color (for integer-valued textures).
 965  * New in GL 3.0.
 966  */
 967 void GLAPIENTRY
 968 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 969 {
 970    struct gl_texture_object *texObj;
 971    GET_CURRENT_CONTEXT(ctx);
 972
 973    texObj = get_texobj(ctx, target, GL_FALSE);
 974    if (!texObj)
 975       return;
 976
 977    switch (pname) {
 978    case GL_TEXTURE_BORDER_COLOR:
 979       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 980       /* set the integer-valued border color */
 981       COPY_4V(texObj->Sampler.BorderColor.i, params);
 982       break;
 983    default:
 984       _mesa_TexParameteriv(target, pname, params);
 985       break;
 986    }
 987    /* XXX no driver hook for TexParameterIiv() yet */
 988 }
 989
 990
 991 /**
 992  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 993  * uint-valued texture border color (for integer-valued textures).
 994  * New in GL 3.0
 995  */
 996 void GLAPIENTRY
 997 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 998 {
 999    struct gl_texture_object *texObj;
1000    GET_CURRENT_CONTEXT(ctx);
1001
1002    texObj = get_texobj(ctx, target, GL_FALSE);
1003    if (!texObj)
1004       return;
1005
1006    switch (pname) {
1007    case GL_TEXTURE_BORDER_COLOR:
1008       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1009       /* set the unsigned integer-valued border color */
1010       COPY_4V(texObj->Sampler.BorderColor.ui, params);
1011       break;
1012    default:
1013       _mesa_TexParameteriv(target, pname, (const GLint *) params);
1014       break;
1015    }
1016    /* XXX no driver hook for TexParameterIuiv() yet */
1017 }
1018
1019
1020 static GLboolean
1021 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
1022 {
1023    switch (target) {
1024    case GL_TEXTURE_1D:
1025    case GL_PROXY_TEXTURE_1D:
1026    case GL_TEXTURE_2D:
1027    case GL_PROXY_TEXTURE_2D:
1028    case GL_TEXTURE_3D:
1029    case GL_PROXY_TEXTURE_3D:
1030       return GL_TRUE;
1031    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
1032    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1033    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1034    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1035    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1036    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1037    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1038       return ctx->Extensions.ARB_texture_cube_map;
1039    case GL_TEXTURE_RECTANGLE_NV:
1040    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1041       return ctx->Extensions.NV_texture_rectangle;
1042    case GL_TEXTURE_1D_ARRAY_EXT:
1043    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1044    case GL_TEXTURE_2D_ARRAY_EXT:
1045    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1046       return ctx->Extensions.EXT_texture_array;
1047    case GL_TEXTURE_BUFFER:
1048       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1049        * but not in earlier versions that expose ARB_texture_buffer_object.
1050        *
1051        * From the ARB_texture_buffer_object spec:
1052        * "(7) Do buffer textures support texture parameters (TexParameter) or
1053        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1054        *
1055        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1056        *    explicit error language for any of these cases.  That is because
1057        *    each of the functions enumerate the set of valid <target>
1058        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1059        *    these cases means that target is not legal, and an INVALID_ENUM
1060        *    error should be generated."
1061        *
1062        * From the OpenGL 3.1 spec:
1063        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1064        */
1065       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1066    case GL_TEXTURE_2D_MULTISAMPLE:
1067    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1068    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1069    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1070       return ctx->Extensions.ARB_texture_multisample;
1071    default:
1072       return GL_FALSE;
1073    }
1074 }
1075
1076
1077 static void
1078 get_tex_level_parameter_image(struct gl_context *ctx,
1079                               const struct gl_texture_object *texObj,
1080                               GLenum target, GLint level,
1081                               GLenum pname, GLint *params)
1082 {
1083    const struct gl_texture_image *img = NULL;
1084    mesa_format texFormat;
1085
1086    img = _mesa_select_tex_image(ctx, texObj, target, level);
1087    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1088       /* undefined texture image */
1089       if (pname == GL_TEXTURE_COMPONENTS)
1090          *params = 1;
1091       else
1092          *params = 0;
1093       return;
1094    }
1095
1096    texFormat = img->TexFormat;
1097
1098    switch (pname) {
1099       case GL_TEXTURE_WIDTH:
1100          *params = img->Width;
1101          break;
1102       case GL_TEXTURE_HEIGHT:
1103          *params = img->Height;
1104          break;
1105       case GL_TEXTURE_DEPTH:
1106          *params = img->Depth;
1107          break;
1108       case GL_TEXTURE_INTERNAL_FORMAT:
1109          if (_mesa_is_format_compressed(texFormat)) {
1110             /* need to return the actual compressed format */
1111             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1112          }
1113          else {
1114             /* If the true internal format is not compressed but the user
1115              * requested a generic compressed format, we have to return the
1116              * generic base format that matches.
1117              *
1118              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1119              *
1120              *     "If no specific compressed format is available,
1121              *     internalformat is instead replaced by the corresponding base
1122              *     internal format."
1123              *
1124              * Otherwise just return the user's requested internal format
1125              */
1126             const GLenum f =
1127                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1128
1129             *params = (f != 0) ? f : img->InternalFormat;
1130          }
1131          break;
1132       case GL_TEXTURE_BORDER:
1133          *params = img->Border;
1134          break;
1135       case GL_TEXTURE_RED_SIZE:
1136       case GL_TEXTURE_GREEN_SIZE:
1137       case GL_TEXTURE_BLUE_SIZE:
1138       case GL_TEXTURE_ALPHA_SIZE:
1139          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1140             *params = _mesa_get_format_bits(texFormat, pname);
1141          else
1142             *params = 0;
1143          break;
1144       case GL_TEXTURE_INTENSITY_SIZE:
1145       case GL_TEXTURE_LUMINANCE_SIZE:
1146          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1147             *params = _mesa_get_format_bits(texFormat, pname);
1148             if (*params == 0) {
1149                /* intensity or luminance is probably stored as RGB[A] */
1150                *params = MIN2(_mesa_get_format_bits(texFormat,
1151                                                     GL_TEXTURE_RED_SIZE),
1152                               _mesa_get_format_bits(texFormat,
1153                                                     GL_TEXTURE_GREEN_SIZE));
1154             }
1155          }
1156          else {
1157             *params = 0;
1158          }
1159          break;
1160       case GL_TEXTURE_DEPTH_SIZE_ARB:
1161          if (!ctx->Extensions.ARB_depth_texture)
1162             goto invalid_pname;
1163          *params = _mesa_get_format_bits(texFormat, pname);
1164          break;
1165       case GL_TEXTURE_STENCIL_SIZE:
1166          *params = _mesa_get_format_bits(texFormat, pname);
1167          break;
1168       case GL_TEXTURE_SHARED_SIZE:
1169          if (ctx->Version < 30 &&
1170              !ctx->Extensions.EXT_texture_shared_exponent)
1171             goto invalid_pname;
1172          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1173          break;
1174
1175       /* GL_ARB_texture_compression */
1176       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1177          if (_mesa_is_format_compressed(texFormat) &&
1178              !_mesa_is_proxy_texture(target)) {
1179             *params = _mesa_format_image_size(texFormat, img->Width,
1180                                               img->Height, img->Depth);
1181          }
1182          else {
1183             _mesa_error(ctx, GL_INVALID_OPERATION,
1184                         "glGetTexLevelParameter[if]v(pname)");
1185          }
1186          break;
1187       case GL_TEXTURE_COMPRESSED:
1188          *params = (GLint) _mesa_is_format_compressed(texFormat);
1189          break;
1190
1191       /* GL_ARB_texture_float */
1192       case GL_TEXTURE_RED_TYPE_ARB:
1193       case GL_TEXTURE_GREEN_TYPE_ARB:
1194       case GL_TEXTURE_BLUE_TYPE_ARB:
1195       case GL_TEXTURE_ALPHA_TYPE_ARB:
1196       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1197       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1198       case GL_TEXTURE_DEPTH_TYPE_ARB:
1199          if (!ctx->Extensions.ARB_texture_float)
1200             goto invalid_pname;
1201          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1202             *params = _mesa_get_format_datatype(texFormat);
1203          else
1204             *params = GL_NONE;
1205          break;
1206
1207       /* GL_ARB_texture_multisample */
1208       case GL_TEXTURE_SAMPLES:
1209          if (!ctx->Extensions.ARB_texture_multisample)
1210             goto invalid_pname;
1211          *params = img->NumSamples;
1212          break;
1213
1214       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1215          if (!ctx->Extensions.ARB_texture_multisample)
1216             goto invalid_pname;
1217          *params = img->FixedSampleLocations;
1218          break;
1219
1220       default:
1221          goto invalid_pname;
1222    }
1223
1224    /* no error if we get here */
1225    return;
1226
1227 invalid_pname:
1228    _mesa_error(ctx, GL_INVALID_ENUM,
1229                "glGetTexLevelParameter[if]v(pname=%s)",
1230                _mesa_lookup_enum_by_nr(pname));
1231 }
1232
1233
1234 static void
1235 get_tex_level_parameter_buffer(struct gl_context *ctx,
1236                                const struct gl_texture_object *texObj,
1237                                GLenum pname, GLint *params)
1238 {
1239    const struct gl_buffer_object *bo = texObj->BufferObject;
1240    mesa_format texFormat = texObj->_BufferObjectFormat;
1241    GLenum internalFormat = texObj->BufferObjectFormat;
1242    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1243
1244    if (!bo) {
1245       /* undefined texture buffer object */
1246       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1247       return;
1248    }
1249
1250    switch (pname) {
1251       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1252          *params = bo->Name;
1253          break;
1254       case GL_TEXTURE_WIDTH:
1255          *params = bo->Size;
1256          break;
1257       case GL_TEXTURE_HEIGHT:
1258       case GL_TEXTURE_DEPTH:
1259       case GL_TEXTURE_BORDER:
1260       case GL_TEXTURE_SHARED_SIZE:
1261       case GL_TEXTURE_COMPRESSED:
1262          *params = 0;
1263          break;
1264       case GL_TEXTURE_INTERNAL_FORMAT:
1265          *params = internalFormat;
1266          break;
1267       case GL_TEXTURE_RED_SIZE:
1268       case GL_TEXTURE_GREEN_SIZE:
1269       case GL_TEXTURE_BLUE_SIZE:
1270       case GL_TEXTURE_ALPHA_SIZE:
1271          if (_mesa_base_format_has_channel(baseFormat, pname))
1272             *params = _mesa_get_format_bits(texFormat, pname);
1273          else
1274             *params = 0;
1275          break;
1276       case GL_TEXTURE_INTENSITY_SIZE:
1277       case GL_TEXTURE_LUMINANCE_SIZE:
1278          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1279             *params = _mesa_get_format_bits(texFormat, pname);
1280             if (*params == 0) {
1281                /* intensity or luminance is probably stored as RGB[A] */
1282                *params = MIN2(_mesa_get_format_bits(texFormat,
1283                                                     GL_TEXTURE_RED_SIZE),
1284                               _mesa_get_format_bits(texFormat,
1285                                                     GL_TEXTURE_GREEN_SIZE));
1286             }
1287          } else {
1288             *params = 0;
1289          }
1290          break;
1291       case GL_TEXTURE_DEPTH_SIZE_ARB:
1292       case GL_TEXTURE_STENCIL_SIZE_EXT:
1293          *params = _mesa_get_format_bits(texFormat, pname);
1294          break;
1295
1296       /* GL_ARB_texture_buffer_range */
1297       case GL_TEXTURE_BUFFER_OFFSET:
1298          if (!ctx->Extensions.ARB_texture_buffer_range)
1299             goto invalid_pname;
1300          *params = texObj->BufferOffset;
1301          break;
1302       case GL_TEXTURE_BUFFER_SIZE:
1303          if (!ctx->Extensions.ARB_texture_buffer_range)
1304             goto invalid_pname;
1305          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1306          break;
1307
1308       /* GL_ARB_texture_compression */
1309       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1310          /* Always illegal for GL_TEXTURE_BUFFER */
1311          _mesa_error(ctx, GL_INVALID_OPERATION,
1312                      "glGetTexLevelParameter[if]v(pname)");
1313          break;
1314
1315       /* GL_ARB_texture_float */
1316       case GL_TEXTURE_RED_TYPE_ARB:
1317       case GL_TEXTURE_GREEN_TYPE_ARB:
1318       case GL_TEXTURE_BLUE_TYPE_ARB:
1319       case GL_TEXTURE_ALPHA_TYPE_ARB:
1320       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1321       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1322       case GL_TEXTURE_DEPTH_TYPE_ARB:
1323          if (!ctx->Extensions.ARB_texture_float)
1324             goto invalid_pname;
1325          if (_mesa_base_format_has_channel(baseFormat, pname))
1326             *params = _mesa_get_format_datatype(texFormat);
1327          else
1328             *params = GL_NONE;
1329          break;
1330
1331       default:
1332          goto invalid_pname;
1333    }
1334
1335    /* no error if we get here */
1336    return;
1337
1338 invalid_pname:
1339    _mesa_error(ctx, GL_INVALID_ENUM,
1340                "glGetTexLevelParameter[if]v(pname=%s)",
1341                _mesa_lookup_enum_by_nr(pname));
1342 }
1343
1344
1345 void GLAPIENTRY
1346 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1347                               GLenum pname, GLfloat *params )
1348 {
1349    GLint iparam;
1350    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1351    *params = (GLfloat) iparam;
1352 }
1353
1354
1355 void GLAPIENTRY
1356 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1357                               GLenum pname, GLint *params )
1358 {
1359    struct gl_texture_object *texObj;
1360    GLint maxLevels;
1361    GET_CURRENT_CONTEXT(ctx);
1362
1363    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1364       _mesa_error(ctx, GL_INVALID_OPERATION,
1365                   "glGetTexLevelParameteriv(current unit)");
1366       return;
1367    }
1368
1369    if (!legal_get_tex_level_parameter_target(ctx, target)) {
1370       _mesa_error(ctx, GL_INVALID_ENUM,
1371                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
1372       return;
1373    }
1374
1375    maxLevels = _mesa_max_texture_levels(ctx, target);
1376    assert(maxLevels != 0);
1377
1378    if (level < 0 || level >= maxLevels) {
1379       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1380       return;
1381    }
1382
1383    texObj = _mesa_get_current_tex_object(ctx, target);
1384
1385    if (target == GL_TEXTURE_BUFFER)
1386       get_tex_level_parameter_buffer(ctx, texObj, pname, params);
1387    else
1388       get_tex_level_parameter_image(ctx, texObj, target, level, pname, params);
1389 }
1390
1391
1392 void GLAPIENTRY
1393 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1394 {
1395    struct gl_texture_object *obj;
1396    GET_CURRENT_CONTEXT(ctx);
1397
1398    obj = get_texobj(ctx, target, GL_TRUE);
1399    if (!obj)
1400       return;
1401
1402    _mesa_lock_texture(ctx, obj);
1403    switch (pname) {
1404       case GL_TEXTURE_MAG_FILTER:
1405          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1406          break;
1407       case GL_TEXTURE_MIN_FILTER:
1408          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1409          break;
1410       case GL_TEXTURE_WRAP_S:
1411          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1412          break;
1413       case GL_TEXTURE_WRAP_T:
1414          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1415          break;
1416       case GL_TEXTURE_WRAP_R:
1417          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1418          break;
1419       case GL_TEXTURE_BORDER_COLOR:
1420          if (!_mesa_is_desktop_gl(ctx))
1421             goto invalid_pname;
1422
1423          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1424             _mesa_update_state_locked(ctx);
1425          if (_mesa_get_clamp_fragment_color(ctx)) {
1426             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1427             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1428             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1429             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1430          }
1431          else {
1432             params[0] = obj->Sampler.BorderColor.f[0];
1433             params[1] = obj->Sampler.BorderColor.f[1];
1434             params[2] = obj->Sampler.BorderColor.f[2];
1435             params[3] = obj->Sampler.BorderColor.f[3];
1436          }
1437          break;
1438       case GL_TEXTURE_RESIDENT:
1439          if (ctx->API != API_OPENGL_COMPAT)
1440             goto invalid_pname;
1441
1442          *params = 1.0F;
1443          break;
1444       case GL_TEXTURE_PRIORITY:
1445          if (ctx->API != API_OPENGL_COMPAT)
1446             goto invalid_pname;
1447
1448          *params = obj->Priority;
1449          break;
1450       case GL_TEXTURE_MIN_LOD:
1451          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1452             goto invalid_pname;
1453
1454          *params = obj->Sampler.MinLod;
1455          break;
1456       case GL_TEXTURE_MAX_LOD:
1457          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1458             goto invalid_pname;
1459
1460          *params = obj->Sampler.MaxLod;
1461          break;
1462       case GL_TEXTURE_BASE_LEVEL:
1463          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1464             goto invalid_pname;
1465
1466          *params = (GLfloat) obj->BaseLevel;
1467          break;
1468       case GL_TEXTURE_MAX_LEVEL:
1469          *params = (GLfloat) obj->MaxLevel;
1470          break;
1471       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1472          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1473             goto invalid_pname;
1474          *params = obj->Sampler.MaxAnisotropy;
1475          break;
1476       case GL_GENERATE_MIPMAP_SGIS:
1477          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1478             goto invalid_pname;
1479
1480          *params = (GLfloat) obj->GenerateMipmap;
1481          break;
1482       case GL_TEXTURE_COMPARE_MODE_ARB:
1483          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1484              && !_mesa_is_gles3(ctx))
1485             goto invalid_pname;
1486          *params = (GLfloat) obj->Sampler.CompareMode;
1487          break;
1488       case GL_TEXTURE_COMPARE_FUNC_ARB:
1489          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1490              && !_mesa_is_gles3(ctx))
1491             goto invalid_pname;
1492          *params = (GLfloat) obj->Sampler.CompareFunc;
1493          break;
1494       case GL_DEPTH_TEXTURE_MODE_ARB:
1495          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1496           * never existed in OpenGL ES.
1497           */
1498          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1499             goto invalid_pname;
1500          *params = (GLfloat) obj->DepthMode;
1501          break;
1502       case GL_TEXTURE_LOD_BIAS:
1503          if (_mesa_is_gles(ctx))
1504             goto invalid_pname;
1505
1506          *params = obj->Sampler.LodBias;
1507          break;
1508       case GL_TEXTURE_CROP_RECT_OES:
1509          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1510             goto invalid_pname;
1511
1512          params[0] = (GLfloat) obj->CropRect[0];
1513          params[1] = (GLfloat) obj->CropRect[1];
1514          params[2] = (GLfloat) obj->CropRect[2];
1515          params[3] = (GLfloat) obj->CropRect[3];
1516          break;
1517
1518       case GL_TEXTURE_SWIZZLE_R_EXT:
1519       case GL_TEXTURE_SWIZZLE_G_EXT:
1520       case GL_TEXTURE_SWIZZLE_B_EXT:
1521       case GL_TEXTURE_SWIZZLE_A_EXT:
1522          if ((!_mesa_is_desktop_gl(ctx)
1523               || !ctx->Extensions.EXT_texture_swizzle)
1524              && !_mesa_is_gles3(ctx))
1525             goto invalid_pname;
1526          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1527          break;
1528
1529       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1530          if ((!_mesa_is_desktop_gl(ctx)
1531               || !ctx->Extensions.EXT_texture_swizzle)
1532              && !_mesa_is_gles3(ctx)) {
1533             goto invalid_pname;
1534          }
1535          else {
1536             GLuint comp;
1537             for (comp = 0; comp < 4; comp++) {
1538                params[comp] = (GLfloat) obj->Swizzle[comp];
1539             }
1540          }
1541          break;
1542
1543       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1544          if (!_mesa_is_desktop_gl(ctx)
1545              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1546             goto invalid_pname;
1547          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1548          break;
1549
1550       case GL_TEXTURE_IMMUTABLE_FORMAT:
1551          *params = (GLfloat) obj->Immutable;
1552          break;
1553
1554       case GL_TEXTURE_IMMUTABLE_LEVELS:
1555          if (_mesa_is_gles3(ctx) ||
1556              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1557             *params = (GLfloat) obj->ImmutableLevels;
1558          else
1559             goto invalid_pname;
1560          break;
1561
1562       case GL_TEXTURE_VIEW_MIN_LEVEL:
1563          if (!ctx->Extensions.ARB_texture_view)
1564             goto invalid_pname;
1565          *params = (GLfloat) obj->MinLevel;
1566          break;
1567
1568       case GL_TEXTURE_VIEW_NUM_LEVELS:
1569          if (!ctx->Extensions.ARB_texture_view)
1570             goto invalid_pname;
1571          *params = (GLfloat) obj->NumLevels;
1572          break;
1573
1574       case GL_TEXTURE_VIEW_MIN_LAYER:
1575          if (!ctx->Extensions.ARB_texture_view)
1576             goto invalid_pname;
1577          *params = (GLfloat) obj->MinLayer;
1578          break;
1579
1580       case GL_TEXTURE_VIEW_NUM_LAYERS:
1581          if (!ctx->Extensions.ARB_texture_view)
1582             goto invalid_pname;
1583          *params = (GLfloat) obj->NumLayers;
1584          break;
1585
1586       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1587          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1588             goto invalid_pname;
1589          *params = (GLfloat) obj->RequiredTextureImageUnits;
1590          break;
1591
1592       case GL_TEXTURE_SRGB_DECODE_EXT:
1593          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1594             goto invalid_pname;
1595          *params = (GLfloat) obj->Sampler.sRGBDecode;
1596          break;
1597
1598       default:
1599          goto invalid_pname;
1600    }
1601
1602    /* no error if we get here */
1603    _mesa_unlock_texture(ctx, obj);
1604    return;
1605
1606 invalid_pname:
1607    _mesa_unlock_texture(ctx, obj);
1608    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1609 }
1610
1611
1612 void GLAPIENTRY
1613 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1614 {
1615    struct gl_texture_object *obj;
1616    GET_CURRENT_CONTEXT(ctx);
1617
1618    obj = get_texobj(ctx, target, GL_TRUE);
1619    if (!obj)
1620       return;
1621
1622    _mesa_lock_texture(ctx, obj);
1623    switch (pname) {
1624       case GL_TEXTURE_MAG_FILTER:
1625          *params = (GLint) obj->Sampler.MagFilter;
1626          break;
1627       case GL_TEXTURE_MIN_FILTER:
1628          *params = (GLint) obj->Sampler.MinFilter;
1629          break;
1630       case GL_TEXTURE_WRAP_S:
1631          *params = (GLint) obj->Sampler.WrapS;
1632          break;
1633       case GL_TEXTURE_WRAP_T:
1634          *params = (GLint) obj->Sampler.WrapT;
1635          break;
1636       case GL_TEXTURE_WRAP_R:
1637          *params = (GLint) obj->Sampler.WrapR;
1638          break;
1639       case GL_TEXTURE_BORDER_COLOR:
1640          if (!_mesa_is_desktop_gl(ctx))
1641             goto invalid_pname;
1642
1643          {
1644             GLfloat b[4];
1645             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1646             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1647             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1648             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1649             params[0] = FLOAT_TO_INT(b[0]);
1650             params[1] = FLOAT_TO_INT(b[1]);
1651             params[2] = FLOAT_TO_INT(b[2]);
1652             params[3] = FLOAT_TO_INT(b[3]);
1653          }
1654          break;
1655       case GL_TEXTURE_RESIDENT:
1656          if (ctx->API != API_OPENGL_COMPAT)
1657             goto invalid_pname;
1658
1659          *params = 1;
1660          break;
1661       case GL_TEXTURE_PRIORITY:
1662          if (ctx->API != API_OPENGL_COMPAT)
1663             goto invalid_pname;
1664
1665          *params = FLOAT_TO_INT(obj->Priority);
1666          break;
1667       case GL_TEXTURE_MIN_LOD:
1668          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1669             goto invalid_pname;
1670
1671          *params = (GLint) obj->Sampler.MinLod;
1672          break;
1673       case GL_TEXTURE_MAX_LOD:
1674          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1675             goto invalid_pname;
1676
1677          *params = (GLint) obj->Sampler.MaxLod;
1678          break;
1679       case GL_TEXTURE_BASE_LEVEL:
1680          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1681             goto invalid_pname;
1682
1683          *params = obj->BaseLevel;
1684          break;
1685       case GL_TEXTURE_MAX_LEVEL:
1686          *params = obj->MaxLevel;
1687          break;
1688       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1689          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1690             goto invalid_pname;
1691          *params = (GLint) obj->Sampler.MaxAnisotropy;
1692          break;
1693       case GL_GENERATE_MIPMAP_SGIS:
1694          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1695             goto invalid_pname;
1696
1697          *params = (GLint) obj->GenerateMipmap;
1698          break;
1699       case GL_TEXTURE_COMPARE_MODE_ARB:
1700          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1701              && !_mesa_is_gles3(ctx))
1702             goto invalid_pname;
1703          *params = (GLint) obj->Sampler.CompareMode;
1704          break;
1705       case GL_TEXTURE_COMPARE_FUNC_ARB:
1706          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1707              && !_mesa_is_gles3(ctx))
1708             goto invalid_pname;
1709          *params = (GLint) obj->Sampler.CompareFunc;
1710          break;
1711       case GL_DEPTH_TEXTURE_MODE_ARB:
1712          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1713             goto invalid_pname;
1714          *params = (GLint) obj->DepthMode;
1715          break;
1716       case GL_TEXTURE_LOD_BIAS:
1717          if (_mesa_is_gles(ctx))
1718             goto invalid_pname;
1719
1720          /* GL spec 'Data Conversions' section specifies that floating-point
1721           * value in integer Get function is rounded to nearest integer
1722           */
1723          *params = IROUND(obj->Sampler.LodBias);
1724          break;
1725       case GL_TEXTURE_CROP_RECT_OES:
1726          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1727             goto invalid_pname;
1728
1729          params[0] = obj->CropRect[0];
1730          params[1] = obj->CropRect[1];
1731          params[2] = obj->CropRect[2];
1732          params[3] = obj->CropRect[3];
1733          break;
1734       case GL_TEXTURE_SWIZZLE_R_EXT:
1735       case GL_TEXTURE_SWIZZLE_G_EXT:
1736       case GL_TEXTURE_SWIZZLE_B_EXT:
1737       case GL_TEXTURE_SWIZZLE_A_EXT:
1738          if ((!_mesa_is_desktop_gl(ctx)
1739               || !ctx->Extensions.EXT_texture_swizzle)
1740              && !_mesa_is_gles3(ctx))
1741             goto invalid_pname;
1742          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1743          break;
1744
1745       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1746          if ((!_mesa_is_desktop_gl(ctx)
1747               || !ctx->Extensions.EXT_texture_swizzle)
1748              && !_mesa_is_gles3(ctx))
1749             goto invalid_pname;
1750          COPY_4V(params, obj->Swizzle);
1751          break;
1752
1753       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1754          if (!_mesa_is_desktop_gl(ctx)
1755              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1756             goto invalid_pname;
1757          *params = (GLint) obj->Sampler.CubeMapSeamless;
1758          break;
1759
1760       case GL_TEXTURE_IMMUTABLE_FORMAT:
1761          *params = (GLint) obj->Immutable;
1762          break;
1763
1764       case GL_TEXTURE_IMMUTABLE_LEVELS:
1765          if (_mesa_is_gles3(ctx) ||
1766              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1767             *params = obj->ImmutableLevels;
1768          else
1769             goto invalid_pname;
1770          break;
1771
1772       case GL_TEXTURE_VIEW_MIN_LEVEL:
1773          if (!ctx->Extensions.ARB_texture_view)
1774             goto invalid_pname;
1775          *params = (GLint) obj->MinLevel;
1776          break;
1777
1778       case GL_TEXTURE_VIEW_NUM_LEVELS:
1779          if (!ctx->Extensions.ARB_texture_view)
1780             goto invalid_pname;
1781          *params = (GLint) obj->NumLevels;
1782          break;
1783
1784       case GL_TEXTURE_VIEW_MIN_LAYER:
1785          if (!ctx->Extensions.ARB_texture_view)
1786             goto invalid_pname;
1787          *params = (GLint) obj->MinLayer;
1788          break;
1789
1790       case GL_TEXTURE_VIEW_NUM_LAYERS:
1791          if (!ctx->Extensions.ARB_texture_view)
1792             goto invalid_pname;
1793          *params = (GLint) obj->NumLayers;
1794          break;
1795
1796       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1797          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1798             goto invalid_pname;
1799          *params = obj->RequiredTextureImageUnits;
1800          break;
1801
1802       case GL_TEXTURE_SRGB_DECODE_EXT:
1803          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1804             goto invalid_pname;
1805          *params = obj->Sampler.sRGBDecode;
1806          break;
1807
1808       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
1809          if (!ctx->Extensions.ARB_shader_image_load_store)
1810             goto invalid_pname;
1811          *params = obj->ImageFormatCompatibilityType;
1812          break;
1813
1814       default:
1815          goto invalid_pname;
1816    }
1817
1818    /* no error if we get here */
1819    _mesa_unlock_texture(ctx, obj);
1820    return;
1821
1822 invalid_pname:
1823    _mesa_unlock_texture(ctx, obj);
1824    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1825 }
1826
1827
1828 /** New in GL 3.0 */
1829 void GLAPIENTRY
1830 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1831 {
1832    struct gl_texture_object *texObj;
1833    GET_CURRENT_CONTEXT(ctx);
1834
1835    texObj = get_texobj(ctx, target, GL_TRUE);
1836    if (!texObj)
1837       return;
1838
1839    switch (pname) {
1840    case GL_TEXTURE_BORDER_COLOR:
1841       COPY_4V(params, texObj->Sampler.BorderColor.i);
1842       break;
1843    default:
1844       _mesa_GetTexParameteriv(target, pname, params);
1845    }
1846 }
1847
1848
1849 /** New in GL 3.0 */
1850 void GLAPIENTRY
1851 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1852 {
1853    struct gl_texture_object *texObj;
1854    GET_CURRENT_CONTEXT(ctx);
1855
1856    texObj = get_texobj(ctx, target, GL_TRUE);
1857    if (!texObj)
1858       return;
1859
1860    switch (pname) {
1861    case GL_TEXTURE_BORDER_COLOR:
1862       COPY_4V(params, texObj->Sampler.BorderColor.i);
1863       break;
1864    default:
1865       {
1866          GLint ip[4];
1867          _mesa_GetTexParameteriv(target, pname, ip);
1868          params[0] = ip[0];
1869          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1870              pname == GL_TEXTURE_CROP_RECT_OES) {
1871             params[1] = ip[1];
1872             params[2] = ip[2];
1873             params[3] = ip[3];
1874          }
1875       }
1876    }
1877 }