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