src/mesa/main/texparam.c

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