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 "main/texfetch.h"
  47 #include "program/prog_instruction.h"
  48
  49
  50 /**
  51  * Check if a coordinate wrap mode is supported for the texture target.
  52  * \return GL_TRUE if legal, GL_FALSE otherwise
  53  */
  54 static GLboolean
  55 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
  56 {
  57    const struct gl_extensions * const e = & ctx->Extensions;
  58
  59    if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE ||
  60        (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
  61       /* any texture target */
  62       return GL_TRUE;
  63    }
  64    else if (target != GL_TEXTURE_RECTANGLE_NV &&
  65             (wrap == GL_REPEAT ||
  66              (wrap == GL_MIRRORED_REPEAT &&
  67               e->ARB_texture_mirrored_repeat) ||
  68              (wrap == GL_MIRROR_CLAMP_EXT &&
  69               (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
  70              (wrap == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
  71               (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
  72              (wrap == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
  73               (e->EXT_texture_mirror_clamp)))) {
  74       /* non-rectangle texture */
  75       return GL_TRUE;
  76    }
  77
  78    _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
  79    return GL_FALSE;
  80 }
  81
  82
  83 /**
  84  * Get current texture object for given target.
  85  * Return NULL if any error (and record the error).
  86  * Note that this is different from _mesa_select_tex_object() in that proxy
  87  * targets are not accepted.
  88  * Only the glGetTexLevelParameter() functions accept proxy targets.
  89  */
  90 static struct gl_texture_object *
  91 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
  92 {
  93    struct gl_texture_unit *texUnit;
  94
  95    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
  96       _mesa_error(ctx, GL_INVALID_OPERATION,
  97                   "gl%sTexParameter(current unit)", get ? "Get" : "");
  98       return NULL;
  99    }
 100
 101    texUnit = _mesa_get_current_tex_unit(ctx);
 102
 103    switch (target) {
 104    case GL_TEXTURE_1D:
 105       return texUnit->CurrentTex[TEXTURE_1D_INDEX];
 106    case GL_TEXTURE_2D:
 107       return texUnit->CurrentTex[TEXTURE_2D_INDEX];
 108    case GL_TEXTURE_3D:
 109       return texUnit->CurrentTex[TEXTURE_3D_INDEX];
 110    case GL_TEXTURE_CUBE_MAP:
 111       if (ctx->Extensions.ARB_texture_cube_map) {
 112          return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
 113       }
 114       break;
 115    case GL_TEXTURE_RECTANGLE_NV:
 116       if (ctx->Extensions.NV_texture_rectangle) {
 117          return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
 118       }
 119       break;
 120    case GL_TEXTURE_1D_ARRAY_EXT:
 121       if (ctx->Extensions.MESA_texture_array ||
 122           ctx->Extensions.EXT_texture_array) {
 123          return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
 124       }
 125       break;
 126    case GL_TEXTURE_2D_ARRAY_EXT:
 127       if (ctx->Extensions.MESA_texture_array ||
 128           ctx->Extensions.EXT_texture_array) {
 129          return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
 130       }
 131       break;
 132    default:
 133       ;
 134    }
 135
 136    _mesa_error(ctx, GL_INVALID_ENUM,
 137                   "gl%sTexParameter(target)", get ? "Get" : "");
 138    return NULL;
 139 }
 140
 141
 142 /**
 143  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 144  * \return -1 if error.
 145  */
 146 static GLint
 147 comp_to_swizzle(GLenum comp)
 148 {
 149    switch (comp) {
 150    case GL_RED:
 151       return SWIZZLE_X;
 152    case GL_GREEN:
 153       return SWIZZLE_Y;
 154    case GL_BLUE:
 155       return SWIZZLE_Z;
 156    case GL_ALPHA:
 157       return SWIZZLE_W;
 158    case GL_ZERO:
 159       return SWIZZLE_ZERO;
 160    case GL_ONE:
 161       return SWIZZLE_ONE;
 162    default:
 163       return -1;
 164    }
 165 }
 166
 167
 168 static void
 169 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 170 {
 171    ASSERT(comp < 4);
 172    ASSERT(swz <= SWIZZLE_NIL);
 173    {
 174       GLuint mask = 0x7 << (3 * comp);
 175       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 176       *swizzle = s;
 177    }
 178 }
 179
 180
 181 /**
 182  * This is called just prior to changing any texture object state which
 183  * will not effect texture completeness.
 184  */
 185 static INLINE void
 186 flush(struct gl_context *ctx)
 187 {
 188    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 189 }
 190
 191
 192 /**
 193  * This is called just prior to changing any texture object state which
 194  * can effect texture completeness (texture base level, max level,
 195  * minification filter).
 196  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 197  * state flag and then mark the texture object as 'incomplete' so that any
 198  * per-texture derived state gets recomputed.
 199  */
 200 static INLINE void
 201 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 202 {
 203    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 204    texObj->_Complete = GL_FALSE;
 205 }
 206
 207
 208 /**
 209  * Set an integer-valued texture parameter
 210  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 211  */
 212 static GLboolean
 213 set_tex_parameteri(struct gl_context *ctx,
 214                    struct gl_texture_object *texObj,
 215                    GLenum pname, const GLint *params)
 216 {
 217    switch (pname) {
 218    case GL_TEXTURE_MIN_FILTER:
 219       if (texObj->Sampler.MinFilter == params[0])
 220          return GL_FALSE;
 221       switch (params[0]) {
 222       case GL_NEAREST:
 223       case GL_LINEAR:
 224          incomplete(ctx, texObj);
 225          texObj->Sampler.MinFilter = params[0];
 226          return GL_TRUE;
 227       case GL_NEAREST_MIPMAP_NEAREST:
 228       case GL_LINEAR_MIPMAP_NEAREST:
 229       case GL_NEAREST_MIPMAP_LINEAR:
 230       case GL_LINEAR_MIPMAP_LINEAR:
 231          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
 232             incomplete(ctx, texObj);
 233             texObj->Sampler.MinFilter = params[0];
 234             return GL_TRUE;
 235          }
 236          /* fall-through */
 237       default:
 238          goto invalid_param;
 239       }
 240       return GL_FALSE;
 241
 242    case GL_TEXTURE_MAG_FILTER:
 243       if (texObj->Sampler.MagFilter == params[0])
 244          return GL_FALSE;
 245       switch (params[0]) {
 246       case GL_NEAREST:
 247       case GL_LINEAR:
 248          flush(ctx); /* does not effect completeness */
 249          texObj->Sampler.MagFilter = params[0];
 250          return GL_TRUE;
 251       default:
 252          goto invalid_param;
 253       }
 254       return GL_FALSE;
 255
 256    case GL_TEXTURE_WRAP_S:
 257       if (texObj->Sampler.WrapS == params[0])
 258          return GL_FALSE;
 259       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 260          flush(ctx);
 261          texObj->Sampler.WrapS = params[0];
 262          return GL_TRUE;
 263       }
 264       return GL_FALSE;
 265
 266    case GL_TEXTURE_WRAP_T:
 267       if (texObj->Sampler.WrapT == params[0])
 268          return GL_FALSE;
 269       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 270          flush(ctx);
 271          texObj->Sampler.WrapT = params[0];
 272          return GL_TRUE;
 273       }
 274       return GL_FALSE;
 275
 276    case GL_TEXTURE_WRAP_R:
 277       if (texObj->Sampler.WrapR == params[0])
 278          return GL_FALSE;
 279       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 280          flush(ctx);
 281          texObj->Sampler.WrapR = params[0];
 282          return GL_TRUE;
 283       }
 284       return GL_FALSE;
 285
 286    case GL_TEXTURE_BASE_LEVEL:
 287       if (texObj->BaseLevel == params[0])
 288          return GL_FALSE;
 289       if (params[0] < 0 ||
 290           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
 291          _mesa_error(ctx, GL_INVALID_VALUE,
 292                      "glTexParameter(param=%d)", params[0]);
 293          return GL_FALSE;
 294       }
 295       incomplete(ctx, texObj);
 296       texObj->BaseLevel = params[0];
 297       return GL_TRUE;
 298
 299    case GL_TEXTURE_MAX_LEVEL:
 300       if (texObj->MaxLevel == params[0])
 301          return GL_FALSE;
 302       if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
 303          _mesa_error(ctx, GL_INVALID_OPERATION,
 304                      "glTexParameter(param=%d)", params[0]);
 305          return GL_FALSE;
 306       }
 307       incomplete(ctx, texObj);
 308       texObj->MaxLevel = params[0];
 309       return GL_TRUE;
 310
 311    case GL_GENERATE_MIPMAP_SGIS:
 312       if (texObj->GenerateMipmap != params[0]) {
 313          /* no flush() */
 314          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 315          return GL_TRUE;
 316       }
 317       return GL_FALSE;
 318
 319    case GL_TEXTURE_COMPARE_MODE_ARB:
 320       if (ctx->Extensions.ARB_shadow) {
 321          if (texObj->Sampler.CompareMode == params[0])
 322             return GL_FALSE;
 323          if (params[0] == GL_NONE ||
 324              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 325             flush(ctx);
 326             texObj->Sampler.CompareMode = params[0];
 327             return GL_TRUE;
 328          }
 329          goto invalid_param;
 330       }
 331       goto invalid_pname;
 332
 333    case GL_TEXTURE_COMPARE_FUNC_ARB:
 334       if (ctx->Extensions.ARB_shadow) {
 335          if (texObj->Sampler.CompareFunc == params[0])
 336             return GL_FALSE;
 337          switch (params[0]) {
 338          case GL_LEQUAL:
 339          case GL_GEQUAL:
 340             flush(ctx);
 341             texObj->Sampler.CompareFunc = params[0];
 342             return GL_TRUE;
 343          case GL_EQUAL:
 344          case GL_NOTEQUAL:
 345          case GL_LESS:
 346          case GL_GREATER:
 347          case GL_ALWAYS:
 348          case GL_NEVER:
 349             if (ctx->Extensions.EXT_shadow_funcs) {
 350                flush(ctx);
 351                texObj->Sampler.CompareFunc = params[0];
 352                return GL_TRUE;
 353             }
 354             /* fall-through */
 355          default:
 356             goto invalid_param;
 357          }
 358       }
 359       goto invalid_pname;
 360
 361    case GL_DEPTH_TEXTURE_MODE_ARB:
 362       if (ctx->Extensions.ARB_depth_texture) {
 363          if (texObj->Sampler.DepthMode == params[0])
 364             return GL_FALSE;
 365          if (params[0] == GL_LUMINANCE ||
 366              params[0] == GL_INTENSITY ||
 367              params[0] == GL_ALPHA ||
 368              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 369             flush(ctx);
 370             texObj->Sampler.DepthMode = params[0];
 371             return GL_TRUE;
 372          }
 373          goto invalid_param;
 374       }
 375       goto invalid_pname;
 376
 377 #if FEATURE_OES_draw_texture
 378    case GL_TEXTURE_CROP_RECT_OES:
 379       texObj->CropRect[0] = params[0];
 380       texObj->CropRect[1] = params[1];
 381       texObj->CropRect[2] = params[2];
 382       texObj->CropRect[3] = params[3];
 383       return GL_TRUE;
 384 #endif
 385
 386    case GL_TEXTURE_SWIZZLE_R_EXT:
 387    case GL_TEXTURE_SWIZZLE_G_EXT:
 388    case GL_TEXTURE_SWIZZLE_B_EXT:
 389    case GL_TEXTURE_SWIZZLE_A_EXT:
 390       if (ctx->Extensions.EXT_texture_swizzle) {
 391          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 392          const GLint swz = comp_to_swizzle(params[0]);
 393          if (swz < 0) {
 394             _mesa_error(ctx, GL_INVALID_OPERATION,
 395                         "glTexParameter(swizzle 0x%x)", params[0]);
 396             return GL_FALSE;
 397          }
 398          ASSERT(comp < 4);
 399          if (swz >= 0) {
 400             flush(ctx);
 401             texObj->Swizzle[comp] = params[0];
 402             set_swizzle_component(&texObj->_Swizzle, comp, swz);
 403             return GL_TRUE;
 404          }
 405       }
 406       goto invalid_pname;
 407
 408    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 409       if (ctx->Extensions.EXT_texture_swizzle) {
 410          GLuint comp;
 411          flush(ctx);
 412          for (comp = 0; comp < 4; comp++) {
 413             const GLint swz = comp_to_swizzle(params[comp]);
 414             if (swz >= 0) {
 415                texObj->Swizzle[comp] = params[comp];
 416                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 417             }
 418             else {
 419                _mesa_error(ctx, GL_INVALID_OPERATION,
 420                            "glTexParameter(swizzle 0x%x)", params[comp]);
 421                return GL_FALSE;
 422             }
 423          }
 424          return GL_TRUE;
 425       }
 426       goto invalid_pname;
 427
 428    case GL_TEXTURE_SRGB_DECODE_EXT:
 429       if (ctx->Extensions.EXT_texture_sRGB_decode) {
 430          GLenum decode = params[0];
 431          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 432             if (texObj->Sampler.sRGBDecode != decode) {
 433                flush(ctx);
 434                texObj->Sampler.sRGBDecode = decode;
 435                _mesa_update_fetch_functions(texObj);
 436             }
 437             return GL_TRUE;
 438          }
 439       }
 440       goto invalid_pname;
 441
 442    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 443       if (ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 444          GLenum param = params[0];
 445          if (param != GL_TRUE && param != GL_FALSE) {
 446             goto invalid_param;
 447          }
 448          if (param != texObj->Sampler.CubeMapSeamless) {
 449             flush(ctx);
 450             texObj->Sampler.CubeMapSeamless = param;
 451          }
 452          return GL_TRUE;
 453       }
 454       goto invalid_pname;
 455
 456    default:
 457       goto invalid_pname;
 458    }
 459
 460 invalid_pname:
 461    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 462                _mesa_lookup_enum_by_nr(pname));
 463    return GL_FALSE;
 464
 465 invalid_param:
 466    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 467                _mesa_lookup_enum_by_nr(params[0]));
 468    return GL_FALSE;
 469 }
 470
 471
 472 /**
 473  * Set a float-valued texture parameter
 474  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 475  */
 476 static GLboolean
 477 set_tex_parameterf(struct gl_context *ctx,
 478                    struct gl_texture_object *texObj,
 479                    GLenum pname, const GLfloat *params)
 480 {
 481    switch (pname) {
 482    case GL_TEXTURE_MIN_LOD:
 483       if (texObj->Sampler.MinLod == params[0])
 484          return GL_FALSE;
 485       flush(ctx);
 486       texObj->Sampler.MinLod = params[0];
 487       return GL_TRUE;
 488
 489    case GL_TEXTURE_MAX_LOD:
 490       if (texObj->Sampler.MaxLod == params[0])
 491          return GL_FALSE;
 492       flush(ctx);
 493       texObj->Sampler.MaxLod = params[0];
 494       return GL_TRUE;
 495
 496    case GL_TEXTURE_PRIORITY:
 497       flush(ctx);
 498       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 499       return GL_TRUE;
 500
 501    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 502       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 503          if (texObj->Sampler.MaxAnisotropy == params[0])
 504             return GL_FALSE;
 505          if (params[0] < 1.0) {
 506             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 507             return GL_FALSE;
 508          }
 509          flush(ctx);
 510          /* clamp to max, that's what NVIDIA does */
 511          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 512                                       ctx->Const.MaxTextureMaxAnisotropy);
 513          return GL_TRUE;
 514       }
 515       else {
 516          static GLuint count = 0;
 517          if (count++ < 10)
 518             _mesa_error(ctx, GL_INVALID_ENUM,
 519                         "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
 520       }
 521       return GL_FALSE;
 522
 523    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 524       if (ctx->Extensions.ARB_shadow_ambient) {
 525          if (texObj->Sampler.CompareFailValue != params[0]) {
 526             flush(ctx);
 527             texObj->Sampler.CompareFailValue = CLAMP(params[0], 0.0F, 1.0F);
 528             return GL_TRUE;
 529          }
 530       }
 531       else {
 532          _mesa_error(ctx, GL_INVALID_ENUM,
 533                     "glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)");
 534       }
 535       return GL_FALSE;
 536
 537    case GL_TEXTURE_LOD_BIAS:
 538       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
 539       if (ctx->Extensions.EXT_texture_lod_bias) {
 540          if (texObj->Sampler.LodBias != params[0]) {
 541             flush(ctx);
 542             texObj->Sampler.LodBias = params[0];
 543             return GL_TRUE;
 544          }
 545          return GL_FALSE;
 546       }
 547       break;
 548
 549    case GL_TEXTURE_BORDER_COLOR:
 550       flush(ctx);
 551       /* ARB_texture_float disables clamping */
 552       if (ctx->Extensions.ARB_texture_float) {
 553          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 554          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 555          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 556          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 557       } else {
 558          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 559          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 560          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 561          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 562       }
 563       return GL_TRUE;
 564
 565    default:
 566       _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
 567    }
 568    return GL_FALSE;
 569 }
 570
 571
 572 void GLAPIENTRY
 573 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 574 {
 575    GLboolean need_update;
 576    struct gl_texture_object *texObj;
 577    GET_CURRENT_CONTEXT(ctx);
 578    ASSERT_OUTSIDE_BEGIN_END(ctx);
 579
 580    texObj = get_texobj(ctx, target, GL_FALSE);
 581    if (!texObj)
 582       return;
 583
 584    switch (pname) {
 585    case GL_TEXTURE_MIN_FILTER:
 586    case GL_TEXTURE_MAG_FILTER:
 587    case GL_TEXTURE_WRAP_S:
 588    case GL_TEXTURE_WRAP_T:
 589    case GL_TEXTURE_WRAP_R:
 590    case GL_TEXTURE_BASE_LEVEL:
 591    case GL_TEXTURE_MAX_LEVEL:
 592    case GL_GENERATE_MIPMAP_SGIS:
 593    case GL_TEXTURE_COMPARE_MODE_ARB:
 594    case GL_TEXTURE_COMPARE_FUNC_ARB:
 595    case GL_DEPTH_TEXTURE_MODE_ARB:
 596    case GL_TEXTURE_SRGB_DECODE_EXT:
 597    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 598       {
 599          /* convert float param to int */
 600          GLint p[4];
 601          p[0] = (GLint) param;
 602          p[1] = p[2] = p[3] = 0;
 603          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 604       }
 605       break;
 606    default:
 607       {
 608          /* this will generate an error if pname is illegal */
 609          GLfloat p[4];
 610          p[0] = param;
 611          p[1] = p[2] = p[3] = 0.0F;
 612          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 613       }
 614    }
 615
 616    if (ctx->Driver.TexParameter && need_update) {
 617       ctx->Driver.TexParameter(ctx, target, texObj, pname, &param);
 618    }
 619 }
 620
 621
 622 void GLAPIENTRY
 623 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 624 {
 625    GLboolean need_update;
 626    struct gl_texture_object *texObj;
 627    GET_CURRENT_CONTEXT(ctx);
 628    ASSERT_OUTSIDE_BEGIN_END(ctx);
 629
 630    texObj = get_texobj(ctx, target, GL_FALSE);
 631    if (!texObj)
 632       return;
 633
 634    switch (pname) {
 635    case GL_TEXTURE_MIN_FILTER:
 636    case GL_TEXTURE_MAG_FILTER:
 637    case GL_TEXTURE_WRAP_S:
 638    case GL_TEXTURE_WRAP_T:
 639    case GL_TEXTURE_WRAP_R:
 640    case GL_TEXTURE_BASE_LEVEL:
 641    case GL_TEXTURE_MAX_LEVEL:
 642    case GL_GENERATE_MIPMAP_SGIS:
 643    case GL_TEXTURE_COMPARE_MODE_ARB:
 644    case GL_TEXTURE_COMPARE_FUNC_ARB:
 645    case GL_DEPTH_TEXTURE_MODE_ARB:
 646    case GL_TEXTURE_SRGB_DECODE_EXT:
 647    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 648       {
 649          /* convert float param to int */
 650          GLint p[4];
 651          p[0] = (GLint) params[0];
 652          p[1] = p[2] = p[3] = 0;
 653          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 654       }
 655       break;
 656
 657 #if FEATURE_OES_draw_texture
 658    case GL_TEXTURE_CROP_RECT_OES:
 659       {
 660          /* convert float params to int */
 661          GLint iparams[4];
 662          iparams[0] = (GLint) params[0];
 663          iparams[1] = (GLint) params[1];
 664          iparams[2] = (GLint) params[2];
 665          iparams[3] = (GLint) params[3];
 666          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 667       }
 668       break;
 669 #endif
 670
 671    default:
 672       /* this will generate an error if pname is illegal */
 673       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 674    }
 675
 676    if (ctx->Driver.TexParameter && need_update) {
 677       ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
 678    }
 679 }
 680
 681
 682 void GLAPIENTRY
 683 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 684 {
 685    GLboolean need_update;
 686    struct gl_texture_object *texObj;
 687    GET_CURRENT_CONTEXT(ctx);
 688    ASSERT_OUTSIDE_BEGIN_END(ctx);
 689
 690    texObj = get_texobj(ctx, target, GL_FALSE);
 691    if (!texObj)
 692       return;
 693
 694    switch (pname) {
 695    case GL_TEXTURE_MIN_LOD:
 696    case GL_TEXTURE_MAX_LOD:
 697    case GL_TEXTURE_PRIORITY:
 698    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 699    case GL_TEXTURE_LOD_BIAS:
 700    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 701       {
 702          GLfloat fparam[4];
 703          fparam[0] = (GLfloat) param;
 704          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 705          /* convert int param to float */
 706          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 707       }
 708       break;
 709    default:
 710       /* this will generate an error if pname is illegal */
 711       {
 712          GLint iparam[4];
 713          iparam[0] = param;
 714          iparam[1] = iparam[2] = iparam[3] = 0;
 715          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 716       }
 717    }
 718
 719    if (ctx->Driver.TexParameter && need_update) {
 720       GLfloat fparam = (GLfloat) param;
 721       ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
 722    }
 723 }
 724
 725
 726 void GLAPIENTRY
 727 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 728 {
 729    GLboolean need_update;
 730    struct gl_texture_object *texObj;
 731    GET_CURRENT_CONTEXT(ctx);
 732    ASSERT_OUTSIDE_BEGIN_END(ctx);
 733
 734    texObj = get_texobj(ctx, target, GL_FALSE);
 735    if (!texObj)
 736       return;
 737
 738    switch (pname) {
 739    case GL_TEXTURE_BORDER_COLOR:
 740       {
 741          /* convert int params to float */
 742          GLfloat fparams[4];
 743          fparams[0] = INT_TO_FLOAT(params[0]);
 744          fparams[1] = INT_TO_FLOAT(params[1]);
 745          fparams[2] = INT_TO_FLOAT(params[2]);
 746          fparams[3] = INT_TO_FLOAT(params[3]);
 747          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 748       }
 749       break;
 750    case GL_TEXTURE_MIN_LOD:
 751    case GL_TEXTURE_MAX_LOD:
 752    case GL_TEXTURE_PRIORITY:
 753    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 754    case GL_TEXTURE_LOD_BIAS:
 755    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 756       {
 757          /* convert int param to float */
 758          GLfloat fparams[4];
 759          fparams[0] = (GLfloat) params[0];
 760          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 761          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 762       }
 763       break;
 764    default:
 765       /* this will generate an error if pname is illegal */
 766       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 767    }
 768
 769    if (ctx->Driver.TexParameter && need_update) {
 770       GLfloat fparams[4];
 771       fparams[0] = INT_TO_FLOAT(params[0]);
 772       if (pname == GL_TEXTURE_BORDER_COLOR ||
 773           pname == GL_TEXTURE_CROP_RECT_OES) {
 774          fparams[1] = INT_TO_FLOAT(params[1]);
 775          fparams[2] = INT_TO_FLOAT(params[2]);
 776          fparams[3] = INT_TO_FLOAT(params[3]);
 777       }
 778       ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
 779    }
 780 }
 781
 782
 783 /**
 784  * Set tex parameter to integer value(s).  Primarily intended to set
 785  * integer-valued texture border color (for integer-valued textures).
 786  * New in GL 3.0.
 787  */
 788 void GLAPIENTRY
 789 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 790 {
 791    struct gl_texture_object *texObj;
 792    GET_CURRENT_CONTEXT(ctx);
 793    ASSERT_OUTSIDE_BEGIN_END(ctx);
 794
 795    texObj = get_texobj(ctx, target, GL_FALSE);
 796    if (!texObj)
 797       return;
 798
 799    switch (pname) {
 800    case GL_TEXTURE_BORDER_COLOR:
 801       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 802       /* set the integer-valued border color */
 803       COPY_4V(texObj->Sampler.BorderColor.i, params);
 804       break;
 805    default:
 806       _mesa_TexParameteriv(target, pname, params);
 807       break;
 808    }
 809    /* XXX no driver hook for TexParameterIiv() yet */
 810 }
 811
 812
 813 /**
 814  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 815  * uint-valued texture border color (for integer-valued textures).
 816  * New in GL 3.0
 817  */
 818 void GLAPIENTRY
 819 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 820 {
 821    struct gl_texture_object *texObj;
 822    GET_CURRENT_CONTEXT(ctx);
 823    ASSERT_OUTSIDE_BEGIN_END(ctx);
 824
 825    texObj = get_texobj(ctx, target, GL_FALSE);
 826    if (!texObj)
 827       return;
 828
 829    switch (pname) {
 830    case GL_TEXTURE_BORDER_COLOR:
 831       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 832       /* set the unsigned integer-valued border color */
 833       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 834       break;
 835    default:
 836       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 837       break;
 838    }
 839    /* XXX no driver hook for TexParameterIuiv() yet */
 840 }
 841
 842
 843
 844
 845 void GLAPIENTRY
 846 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
 847                               GLenum pname, GLfloat *params )
 848 {
 849    GLint iparam;
 850    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
 851    *params = (GLfloat) iparam;
 852 }
 853
 854
 855 void GLAPIENTRY
 856 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
 857                               GLenum pname, GLint *params )
 858 {
 859    const struct gl_texture_unit *texUnit;
 860    struct gl_texture_object *texObj;
 861    const struct gl_texture_image *img = NULL;
 862    GLint maxLevels;
 863    gl_format texFormat;
 864    GET_CURRENT_CONTEXT(ctx);
 865    ASSERT_OUTSIDE_BEGIN_END(ctx);
 866
 867    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 868       _mesa_error(ctx, GL_INVALID_OPERATION,
 869                   "glGetTexLevelParameteriv(current unit)");
 870       return;
 871    }
 872
 873    texUnit = _mesa_get_current_tex_unit(ctx);
 874
 875    /* this will catch bad target values */
 876    maxLevels = _mesa_max_texture_levels(ctx, target);
 877    if (maxLevels == 0) {
 878       _mesa_error(ctx, GL_INVALID_ENUM,
 879                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
 880       return;
 881    }
 882
 883    if (level < 0 || level >= maxLevels) {
 884       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
 885       return;
 886    }
 887
 888    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 889
 890    img = _mesa_select_tex_image(ctx, texObj, target, level);
 891    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
 892       /* undefined texture image */
 893       if (pname == GL_TEXTURE_COMPONENTS)
 894          *params = 1;
 895       else
 896          *params = 0;
 897       return;
 898    }
 899
 900    texFormat = img->TexFormat;
 901
 902    switch (pname) {
 903       case GL_TEXTURE_WIDTH:
 904          *params = img->Width;
 905          break;
 906       case GL_TEXTURE_HEIGHT:
 907          *params = img->Height;
 908          break;
 909       case GL_TEXTURE_DEPTH:
 910          *params = img->Depth;
 911          break;
 912       case GL_TEXTURE_INTERNAL_FORMAT:
 913          if (_mesa_is_format_compressed(texFormat)) {
 914             /* need to return the actual compressed format */
 915             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
 916          }
 917          else {
 918             /* If the true internal format is not compressed but the user
 919              * requested a generic compressed format, we have to return the
 920              * generic base format that matches.
 921              *
 922              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
 923              *
 924              *     "If no specific compressed format is available,
 925              *     internalformat is instead replaced by the corresponding base
 926              *     internal format."
 927              *
 928              * Otherwise just return the user's requested internal format
 929              */
 930             const GLenum f =
 931                _mesa_gl_compressed_format_base_format(img->InternalFormat);
 932
 933             *params = (f != 0) ? f : img->InternalFormat;
 934          }
 935          break;
 936       case GL_TEXTURE_BORDER:
 937          *params = img->Border;
 938          break;
 939       case GL_TEXTURE_RED_SIZE:
 940          if (img->_BaseFormat == GL_RED) {
 941             *params = _mesa_get_format_bits(texFormat, pname);
 942             break;
 943          }
 944          /* FALLTHROUGH */
 945       case GL_TEXTURE_GREEN_SIZE:
 946          if (img->_BaseFormat == GL_RG) {
 947             *params = _mesa_get_format_bits(texFormat, pname);
 948             break;
 949          }
 950          /* FALLTHROUGH */
 951       case GL_TEXTURE_BLUE_SIZE:
 952          if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
 953             *params = _mesa_get_format_bits(texFormat, pname);
 954          else
 955             *params = 0;
 956          break;
 957       case GL_TEXTURE_ALPHA_SIZE:
 958          if (img->_BaseFormat == GL_ALPHA ||
 959              img->_BaseFormat == GL_LUMINANCE_ALPHA ||
 960              img->_BaseFormat == GL_RGBA)
 961             *params = _mesa_get_format_bits(texFormat, pname);
 962          else
 963             *params = 0;
 964          break;
 965       case GL_TEXTURE_INTENSITY_SIZE:
 966          if (img->_BaseFormat != GL_INTENSITY)
 967             *params = 0;
 968          else {
 969             *params = _mesa_get_format_bits(texFormat, pname);
 970             if (*params == 0) {
 971                /* intensity probably stored as rgb texture */
 972                *params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
 973                               _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
 974             }
 975          }
 976          break;
 977       case GL_TEXTURE_LUMINANCE_SIZE:
 978          if (img->_BaseFormat != GL_LUMINANCE &&
 979              img->_BaseFormat != GL_LUMINANCE_ALPHA)
 980             *params = 0;
 981          else {
 982             *params = _mesa_get_format_bits(texFormat, pname);
 983             if (*params == 0) {
 984                /* luminance probably stored as rgb texture */
 985                *params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
 986                               _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
 987             }
 988          }
 989          break;
 990       case GL_TEXTURE_INDEX_SIZE_EXT:
 991          if (img->_BaseFormat == GL_COLOR_INDEX)
 992             *params = _mesa_get_format_bits(texFormat, pname);
 993          else
 994             *params = 0;
 995          break;
 996       case GL_TEXTURE_DEPTH_SIZE_ARB:
 997          if (!ctx->Extensions.ARB_depth_texture)
 998             goto invalid_pname;
 999          *params = _mesa_get_format_bits(texFormat, pname);
1000          break;
1001       case GL_TEXTURE_STENCIL_SIZE_EXT:
1002          if (!ctx->Extensions.EXT_packed_depth_stencil &&
1003              !ctx->Extensions.ARB_framebuffer_object)
1004             goto invalid_pname;
1005          *params = _mesa_get_format_bits(texFormat, pname);
1006          break;
1007       case GL_TEXTURE_SHARED_SIZE:
1008          if (ctx->VersionMajor < 3 &&
1009              !ctx->Extensions.EXT_texture_shared_exponent)
1010             goto invalid_pname;
1011          *params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0;
1012          break;
1013
1014       /* GL_ARB_texture_compression */
1015       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1016          if (_mesa_is_format_compressed(texFormat) &&
1017              !_mesa_is_proxy_texture(target)) {
1018             *params = _mesa_format_image_size(texFormat, img->Width,
1019                                               img->Height, img->Depth);
1020          }
1021          else {
1022             _mesa_error(ctx, GL_INVALID_OPERATION,
1023                         "glGetTexLevelParameter[if]v(pname)");
1024          }
1025          break;
1026       case GL_TEXTURE_COMPRESSED:
1027          *params = (GLint) _mesa_is_format_compressed(texFormat);
1028          break;
1029
1030       /* GL_ARB_texture_float */
1031       case GL_TEXTURE_RED_TYPE_ARB:
1032          if (!ctx->Extensions.ARB_texture_float)
1033             goto invalid_pname;
1034          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE) ?
1035             _mesa_get_format_datatype(texFormat) : GL_NONE;
1036          break;
1037       case GL_TEXTURE_GREEN_TYPE_ARB:
1038          if (!ctx->Extensions.ARB_texture_float)
1039             goto invalid_pname;
1040          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE) ?
1041             _mesa_get_format_datatype(texFormat) : GL_NONE;
1042          break;
1043       case GL_TEXTURE_BLUE_TYPE_ARB:
1044          if (!ctx->Extensions.ARB_texture_float)
1045             goto invalid_pname;
1046          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE) ?
1047             _mesa_get_format_datatype(texFormat) : GL_NONE;
1048          break;
1049       case GL_TEXTURE_ALPHA_TYPE_ARB:
1050          if (!ctx->Extensions.ARB_texture_float)
1051             goto invalid_pname;
1052          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE) ?
1053             _mesa_get_format_datatype(texFormat) : GL_NONE;
1054          break;
1055       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1056          if (!ctx->Extensions.ARB_texture_float)
1057             goto invalid_pname;
1058          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_LUMINANCE_SIZE) ?
1059             _mesa_get_format_datatype(texFormat) : GL_NONE;
1060          break;
1061       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1062          if (!ctx->Extensions.ARB_texture_float)
1063             goto invalid_pname;
1064          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_INTENSITY_SIZE) ?
1065             _mesa_get_format_datatype(texFormat) : GL_NONE;
1066          break;
1067       case GL_TEXTURE_DEPTH_TYPE_ARB:
1068          if (!ctx->Extensions.ARB_texture_float)
1069             goto invalid_pname;
1070          *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE) ?
1071             _mesa_get_format_datatype(texFormat) : GL_NONE;
1072          break;
1073
1074       default:
1075          goto invalid_pname;
1076    }
1077
1078    /* no error if we get here */
1079    return;
1080
1081 invalid_pname:
1082    _mesa_error(ctx, GL_INVALID_ENUM,
1083                "glGetTexLevelParameter[if]v(pname=%s)",
1084                _mesa_lookup_enum_by_nr(pname));
1085 }
1086
1087
1088
1089 void GLAPIENTRY
1090 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1091 {
1092    struct gl_texture_object *obj;
1093    GET_CURRENT_CONTEXT(ctx);
1094    ASSERT_OUTSIDE_BEGIN_END(ctx);
1095
1096    obj = get_texobj(ctx, target, GL_TRUE);
1097    if (!obj)
1098       return;
1099
1100    _mesa_lock_texture(ctx, obj);
1101    switch (pname) {
1102       case GL_TEXTURE_MAG_FILTER:
1103          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1104          break;
1105       case GL_TEXTURE_MIN_FILTER:
1106          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1107          break;
1108       case GL_TEXTURE_WRAP_S:
1109          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1110          break;
1111       case GL_TEXTURE_WRAP_T:
1112          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1113          break;
1114       case GL_TEXTURE_WRAP_R:
1115          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1116          break;
1117       case GL_TEXTURE_BORDER_COLOR:
1118          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1119             _mesa_update_state_locked(ctx);
1120          if (ctx->Color._ClampFragmentColor) {
1121             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1122             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1123             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1124             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1125          }
1126          else {
1127             params[0] = obj->Sampler.BorderColor.f[0];
1128             params[1] = obj->Sampler.BorderColor.f[1];
1129             params[2] = obj->Sampler.BorderColor.f[2];
1130             params[3] = obj->Sampler.BorderColor.f[3];
1131          }
1132          break;
1133       case GL_TEXTURE_RESIDENT:
1134          *params = ctx->Driver.IsTextureResident ?
1135             ctx->Driver.IsTextureResident(ctx, obj) : 1.0F;
1136          break;
1137       case GL_TEXTURE_PRIORITY:
1138          *params = obj->Priority;
1139          break;
1140       case GL_TEXTURE_MIN_LOD:
1141          *params = obj->Sampler.MinLod;
1142          break;
1143       case GL_TEXTURE_MAX_LOD:
1144          *params = obj->Sampler.MaxLod;
1145          break;
1146       case GL_TEXTURE_BASE_LEVEL:
1147          *params = (GLfloat) obj->BaseLevel;
1148          break;
1149       case GL_TEXTURE_MAX_LEVEL:
1150          *params = (GLfloat) obj->MaxLevel;
1151          break;
1152       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1153          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1154             goto invalid_pname;
1155          *params = obj->Sampler.MaxAnisotropy;
1156          break;
1157       case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1158          if (!ctx->Extensions.ARB_shadow_ambient)
1159             goto invalid_pname;
1160          *params = obj->Sampler.CompareFailValue;
1161          break;
1162       case GL_GENERATE_MIPMAP_SGIS:
1163          *params = (GLfloat) obj->GenerateMipmap;
1164          break;
1165       case GL_TEXTURE_COMPARE_MODE_ARB:
1166          if (!ctx->Extensions.ARB_shadow)
1167             goto invalid_pname;
1168          *params = (GLfloat) obj->Sampler.CompareMode;
1169          break;
1170       case GL_TEXTURE_COMPARE_FUNC_ARB:
1171          if (!ctx->Extensions.ARB_shadow)
1172             goto invalid_pname;
1173          *params = (GLfloat) obj->Sampler.CompareFunc;
1174          break;
1175       case GL_DEPTH_TEXTURE_MODE_ARB:
1176          if (!ctx->Extensions.ARB_depth_texture)
1177             goto invalid_pname;
1178          *params = (GLfloat) obj->Sampler.DepthMode;
1179          break;
1180       case GL_TEXTURE_LOD_BIAS:
1181          if (!ctx->Extensions.EXT_texture_lod_bias)
1182             goto invalid_pname;
1183          *params = obj->Sampler.LodBias;
1184          break;
1185 #if FEATURE_OES_draw_texture
1186       case GL_TEXTURE_CROP_RECT_OES:
1187          params[0] = obj->CropRect[0];
1188          params[1] = obj->CropRect[1];
1189          params[2] = obj->CropRect[2];
1190          params[3] = obj->CropRect[3];
1191          break;
1192 #endif
1193
1194       case GL_TEXTURE_SWIZZLE_R_EXT:
1195       case GL_TEXTURE_SWIZZLE_G_EXT:
1196       case GL_TEXTURE_SWIZZLE_B_EXT:
1197       case GL_TEXTURE_SWIZZLE_A_EXT:
1198          if (!ctx->Extensions.EXT_texture_swizzle)
1199             goto invalid_pname;
1200          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1201          break;
1202
1203       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1204          if (!ctx->Extensions.EXT_texture_swizzle) {
1205             goto invalid_pname;
1206          }
1207          else {
1208             GLuint comp;
1209             for (comp = 0; comp < 4; comp++) {
1210                params[comp] = (GLfloat) obj->Swizzle[comp];
1211             }
1212          }
1213          break;
1214
1215       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1216          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1217             goto invalid_pname;
1218          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1219          break;
1220
1221       default:
1222          goto invalid_pname;
1223    }
1224
1225    /* no error if we get here */
1226    _mesa_unlock_texture(ctx, obj);
1227    return;
1228
1229 invalid_pname:
1230    _mesa_unlock_texture(ctx, obj);
1231    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1232 }
1233
1234
1235 void GLAPIENTRY
1236 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1237 {
1238    struct gl_texture_object *obj;
1239    GET_CURRENT_CONTEXT(ctx);
1240    ASSERT_OUTSIDE_BEGIN_END(ctx);
1241
1242    obj = get_texobj(ctx, target, GL_TRUE);
1243    if (!obj)
1244       return;
1245
1246    _mesa_lock_texture(ctx, obj);
1247    switch (pname) {
1248       case GL_TEXTURE_MAG_FILTER:
1249          *params = (GLint) obj->Sampler.MagFilter;
1250          break;;
1251       case GL_TEXTURE_MIN_FILTER:
1252          *params = (GLint) obj->Sampler.MinFilter;
1253          break;;
1254       case GL_TEXTURE_WRAP_S:
1255          *params = (GLint) obj->Sampler.WrapS;
1256          break;;
1257       case GL_TEXTURE_WRAP_T:
1258          *params = (GLint) obj->Sampler.WrapT;
1259          break;;
1260       case GL_TEXTURE_WRAP_R:
1261          *params = (GLint) obj->Sampler.WrapR;
1262          break;;
1263       case GL_TEXTURE_BORDER_COLOR:
1264          {
1265             GLfloat b[4];
1266             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1267             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1268             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1269             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1270             params[0] = FLOAT_TO_INT(b[0]);
1271             params[1] = FLOAT_TO_INT(b[1]);
1272             params[2] = FLOAT_TO_INT(b[2]);
1273             params[3] = FLOAT_TO_INT(b[3]);
1274          }
1275          break;;
1276       case GL_TEXTURE_RESIDENT:
1277          *params = ctx->Driver.IsTextureResident ?
1278             ctx->Driver.IsTextureResident(ctx, obj) : 1;
1279          break;;
1280       case GL_TEXTURE_PRIORITY:
1281          *params = FLOAT_TO_INT(obj->Priority);
1282          break;;
1283       case GL_TEXTURE_MIN_LOD:
1284          *params = (GLint) obj->Sampler.MinLod;
1285          break;;
1286       case GL_TEXTURE_MAX_LOD:
1287          *params = (GLint) obj->Sampler.MaxLod;
1288          break;;
1289       case GL_TEXTURE_BASE_LEVEL:
1290          *params = obj->BaseLevel;
1291          break;;
1292       case GL_TEXTURE_MAX_LEVEL:
1293          *params = obj->MaxLevel;
1294          break;;
1295       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1296          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1297             goto invalid_pname;
1298          *params = (GLint) obj->Sampler.MaxAnisotropy;
1299          break;
1300       case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1301          if (!ctx->Extensions.ARB_shadow_ambient)
1302             goto invalid_pname;
1303          *params = (GLint) FLOAT_TO_INT(obj->Sampler.CompareFailValue);
1304          break;
1305       case GL_GENERATE_MIPMAP_SGIS:
1306          *params = (GLint) obj->GenerateMipmap;
1307          break;
1308       case GL_TEXTURE_COMPARE_MODE_ARB:
1309          if (!ctx->Extensions.ARB_shadow)
1310             goto invalid_pname;
1311          *params = (GLint) obj->Sampler.CompareMode;
1312          break;
1313       case GL_TEXTURE_COMPARE_FUNC_ARB:
1314          if (!ctx->Extensions.ARB_shadow)
1315             goto invalid_pname;
1316          *params = (GLint) obj->Sampler.CompareFunc;
1317          break;
1318       case GL_DEPTH_TEXTURE_MODE_ARB:
1319          if (!ctx->Extensions.ARB_depth_texture)
1320             goto invalid_pname;
1321          *params = (GLint) obj->Sampler.DepthMode;
1322          break;
1323       case GL_TEXTURE_LOD_BIAS:
1324          if (!ctx->Extensions.EXT_texture_lod_bias)
1325             goto invalid_pname;
1326          *params = (GLint) obj->Sampler.LodBias;
1327          break;
1328 #if FEATURE_OES_draw_texture
1329       case GL_TEXTURE_CROP_RECT_OES:
1330          params[0] = obj->CropRect[0];
1331          params[1] = obj->CropRect[1];
1332          params[2] = obj->CropRect[2];
1333          params[3] = obj->CropRect[3];
1334          break;
1335 #endif
1336       case GL_TEXTURE_SWIZZLE_R_EXT:
1337       case GL_TEXTURE_SWIZZLE_G_EXT:
1338       case GL_TEXTURE_SWIZZLE_B_EXT:
1339       case GL_TEXTURE_SWIZZLE_A_EXT:
1340          if (!ctx->Extensions.EXT_texture_swizzle)
1341             goto invalid_pname;
1342          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1343          break;
1344
1345       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1346          if (!ctx->Extensions.EXT_texture_swizzle)
1347             goto invalid_pname;
1348          COPY_4V(params, obj->Swizzle);
1349          break;
1350
1351       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1352          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1353             goto invalid_pname;
1354          *params = (GLint) obj->Sampler.CubeMapSeamless;
1355          break;
1356
1357       default:
1358          goto invalid_pname;
1359    }
1360
1361    /* no error if we get here */
1362    _mesa_unlock_texture(ctx, obj);
1363    return;
1364
1365 invalid_pname:
1366    _mesa_unlock_texture(ctx, obj);
1367    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1368 }
1369
1370
1371 /** New in GL 3.0 */
1372 void GLAPIENTRY
1373 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1374 {
1375    struct gl_texture_object *texObj;
1376    GET_CURRENT_CONTEXT(ctx);
1377    ASSERT_OUTSIDE_BEGIN_END(ctx);
1378
1379    texObj = get_texobj(ctx, target, GL_TRUE);
1380    if (!texObj)
1381       return;
1382
1383    switch (pname) {
1384    case GL_TEXTURE_BORDER_COLOR:
1385       COPY_4V(params, texObj->Sampler.BorderColor.i);
1386       break;
1387    default:
1388       _mesa_GetTexParameteriv(target, pname, params);
1389    }
1390 }
1391
1392
1393 /** New in GL 3.0 */
1394 void GLAPIENTRY
1395 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1396 {
1397    struct gl_texture_object *texObj;
1398    GET_CURRENT_CONTEXT(ctx);
1399    ASSERT_OUTSIDE_BEGIN_END(ctx);
1400
1401    texObj = get_texobj(ctx, target, GL_TRUE);
1402    if (!texObj)
1403       return;
1404
1405    switch (pname) {
1406    case GL_TEXTURE_BORDER_COLOR:
1407       COPY_4V(params, texObj->Sampler.BorderColor.i);
1408       break;
1409    default:
1410       {
1411          GLint ip[4];
1412          _mesa_GetTexParameteriv(target, pname, ip);
1413          params[0] = ip[0];
1414          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1415              pname == GL_TEXTURE_CROP_RECT_OES) {
1416             params[1] = ip[1];
1417             params[2] = ip[2];
1418             params[3] = ip[3];
1419          }
1420       }
1421    }
1422 }