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 #include <stdbool.h>
  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    bool supported;
  60
  61    switch (wrap) {
  62    case GL_CLAMP:
  63       supported = (target != GL_TEXTURE_EXTERNAL_OES);
  64       break;
  65
  66    case GL_CLAMP_TO_EDGE:
  67       supported = true;
  68       break;
  69
  70    case GL_CLAMP_TO_BORDER:
  71       supported = e->ARB_texture_border_clamp
  72          && (target != GL_TEXTURE_EXTERNAL_OES);
  73       break;
  74
  75    case GL_REPEAT:
  76    case GL_MIRRORED_REPEAT:
  77       supported = (target != GL_TEXTURE_RECTANGLE_NV)
  78          && (target != GL_TEXTURE_EXTERNAL_OES);
  79       break;
  80
  81    case GL_MIRROR_CLAMP_EXT:
  82    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  83       supported = (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  84          && (target != GL_TEXTURE_RECTANGLE_NV)
  85          && (target != GL_TEXTURE_EXTERNAL_OES);
  86       break;
  87
  88    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
  89       supported = e->EXT_texture_mirror_clamp
  90          && (target != GL_TEXTURE_RECTANGLE_NV)
  91          && (target != GL_TEXTURE_EXTERNAL_OES);
  92       break;
  93
  94    default:
  95       supported = false;
  96       break;
  97    }
  98
  99    if (!supported)
 100       _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
 101
 102    return supported;
 103 }
 104
 105
 106 /**
 107  * Get current texture object for given target.
 108  * Return NULL if any error (and record the error).
 109  * Note that this is different from _mesa_select_tex_object() in that proxy
 110  * targets are not accepted.
 111  * Only the glGetTexLevelParameter() functions accept proxy targets.
 112  */
 113 static struct gl_texture_object *
 114 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
 115 {
 116    struct gl_texture_unit *texUnit;
 117
 118    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 119       _mesa_error(ctx, GL_INVALID_OPERATION,
 120                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 121       return NULL;
 122    }
 123
 124    texUnit = _mesa_get_current_tex_unit(ctx);
 125
 126    switch (target) {
 127    case GL_TEXTURE_1D:
 128       return texUnit->CurrentTex[TEXTURE_1D_INDEX];
 129    case GL_TEXTURE_2D:
 130       return texUnit->CurrentTex[TEXTURE_2D_INDEX];
 131    case GL_TEXTURE_3D:
 132       return texUnit->CurrentTex[TEXTURE_3D_INDEX];
 133    case GL_TEXTURE_CUBE_MAP:
 134       if (ctx->Extensions.ARB_texture_cube_map) {
 135          return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
 136       }
 137       break;
 138    case GL_TEXTURE_RECTANGLE_NV:
 139       if (ctx->Extensions.NV_texture_rectangle) {
 140          return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
 141       }
 142       break;
 143    case GL_TEXTURE_1D_ARRAY_EXT:
 144       if (ctx->Extensions.MESA_texture_array ||
 145           ctx->Extensions.EXT_texture_array) {
 146          return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
 147       }
 148       break;
 149    case GL_TEXTURE_2D_ARRAY_EXT:
 150       if (ctx->Extensions.MESA_texture_array ||
 151           ctx->Extensions.EXT_texture_array) {
 152          return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
 153       }
 154       break;
 155    case GL_TEXTURE_EXTERNAL_OES:
 156       if (ctx->Extensions.OES_EGL_image_external) {
 157          return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX];
 158       }
 159       break;
 160    default:
 161       ;
 162    }
 163
 164    _mesa_error(ctx, GL_INVALID_ENUM,
 165                   "gl%sTexParameter(target)", get ? "Get" : "");
 166    return NULL;
 167 }
 168
 169
 170 /**
 171  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 172  * \return -1 if error.
 173  */
 174 static GLint
 175 comp_to_swizzle(GLenum comp)
 176 {
 177    switch (comp) {
 178    case GL_RED:
 179       return SWIZZLE_X;
 180    case GL_GREEN:
 181       return SWIZZLE_Y;
 182    case GL_BLUE:
 183       return SWIZZLE_Z;
 184    case GL_ALPHA:
 185       return SWIZZLE_W;
 186    case GL_ZERO:
 187       return SWIZZLE_ZERO;
 188    case GL_ONE:
 189       return SWIZZLE_ONE;
 190    default:
 191       return -1;
 192    }
 193 }
 194
 195
 196 static void
 197 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 198 {
 199    ASSERT(comp < 4);
 200    ASSERT(swz <= SWIZZLE_NIL);
 201    {
 202       GLuint mask = 0x7 << (3 * comp);
 203       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 204       *swizzle = s;
 205    }
 206 }
 207
 208
 209 /**
 210  * This is called just prior to changing any texture object state which
 211  * will not effect texture completeness.
 212  */
 213 static inline void
 214 flush(struct gl_context *ctx)
 215 {
 216    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 217 }
 218
 219
 220 /**
 221  * This is called just prior to changing any texture object state which
 222  * can effect texture completeness (texture base level, max level).
 223  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 224  * state flag and then mark the texture object as 'incomplete' so that any
 225  * per-texture derived state gets recomputed.
 226  */
 227 static inline void
 228 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 229 {
 230    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 231    _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 232 }
 233
 234
 235 /**
 236  * Set an integer-valued texture parameter
 237  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 238  */
 239 static GLboolean
 240 set_tex_parameteri(struct gl_context *ctx,
 241                    struct gl_texture_object *texObj,
 242                    GLenum pname, const GLint *params)
 243 {
 244    switch (pname) {
 245    case GL_TEXTURE_MIN_FILTER:
 246       if (texObj->Sampler.MinFilter == params[0])
 247          return GL_FALSE;
 248       switch (params[0]) {
 249       case GL_NEAREST:
 250       case GL_LINEAR:
 251          flush(ctx);
 252          texObj->Sampler.MinFilter = params[0];
 253          return GL_TRUE;
 254       case GL_NEAREST_MIPMAP_NEAREST:
 255       case GL_LINEAR_MIPMAP_NEAREST:
 256       case GL_NEAREST_MIPMAP_LINEAR:
 257       case GL_LINEAR_MIPMAP_LINEAR:
 258          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 259              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 260             flush(ctx);
 261             texObj->Sampler.MinFilter = params[0];
 262             return GL_TRUE;
 263          }
 264          /* fall-through */
 265       default:
 266          goto invalid_param;
 267       }
 268       return GL_FALSE;
 269
 270    case GL_TEXTURE_MAG_FILTER:
 271       if (texObj->Sampler.MagFilter == params[0])
 272          return GL_FALSE;
 273       switch (params[0]) {
 274       case GL_NEAREST:
 275       case GL_LINEAR:
 276          flush(ctx); /* does not effect completeness */
 277          texObj->Sampler.MagFilter = params[0];
 278          return GL_TRUE;
 279       default:
 280          goto invalid_param;
 281       }
 282       return GL_FALSE;
 283
 284    case GL_TEXTURE_WRAP_S:
 285       if (texObj->Sampler.WrapS == params[0])
 286          return GL_FALSE;
 287       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 288          flush(ctx);
 289          texObj->Sampler.WrapS = params[0];
 290          return GL_TRUE;
 291       }
 292       return GL_FALSE;
 293
 294    case GL_TEXTURE_WRAP_T:
 295       if (texObj->Sampler.WrapT == params[0])
 296          return GL_FALSE;
 297       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 298          flush(ctx);
 299          texObj->Sampler.WrapT = params[0];
 300          return GL_TRUE;
 301       }
 302       return GL_FALSE;
 303
 304    case GL_TEXTURE_WRAP_R:
 305       if (texObj->Sampler.WrapR == params[0])
 306          return GL_FALSE;
 307       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 308          flush(ctx);
 309          texObj->Sampler.WrapR = params[0];
 310          return GL_TRUE;
 311       }
 312       return GL_FALSE;
 313
 314    case GL_TEXTURE_BASE_LEVEL:
 315       if (texObj->BaseLevel == params[0])
 316          return GL_FALSE;
 317       if (params[0] < 0 ||
 318           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
 319          _mesa_error(ctx, GL_INVALID_VALUE,
 320                      "glTexParameter(param=%d)", params[0]);
 321          return GL_FALSE;
 322       }
 323       incomplete(ctx, texObj);
 324       texObj->BaseLevel = params[0];
 325       return GL_TRUE;
 326
 327    case GL_TEXTURE_MAX_LEVEL:
 328       if (texObj->MaxLevel == params[0])
 329          return GL_FALSE;
 330       if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
 331          _mesa_error(ctx, GL_INVALID_OPERATION,
 332                      "glTexParameter(param=%d)", params[0]);
 333          return GL_FALSE;
 334       }
 335       incomplete(ctx, texObj);
 336       texObj->MaxLevel = params[0];
 337       return GL_TRUE;
 338
 339    case GL_GENERATE_MIPMAP_SGIS:
 340       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 341          goto invalid_param;
 342       if (texObj->GenerateMipmap != params[0]) {
 343          /* no flush() */
 344          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 345          return GL_TRUE;
 346       }
 347       return GL_FALSE;
 348
 349    case GL_TEXTURE_COMPARE_MODE_ARB:
 350       if (ctx->Extensions.ARB_shadow) {
 351          if (texObj->Sampler.CompareMode == params[0])
 352             return GL_FALSE;
 353          if (params[0] == GL_NONE ||
 354              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 355             flush(ctx);
 356             texObj->Sampler.CompareMode = params[0];
 357             return GL_TRUE;
 358          }
 359          goto invalid_param;
 360       }
 361       goto invalid_pname;
 362
 363    case GL_TEXTURE_COMPARE_FUNC_ARB:
 364       if (ctx->Extensions.ARB_shadow) {
 365          if (texObj->Sampler.CompareFunc == params[0])
 366             return GL_FALSE;
 367          switch (params[0]) {
 368          case GL_LEQUAL:
 369          case GL_GEQUAL:
 370             flush(ctx);
 371             texObj->Sampler.CompareFunc = params[0];
 372             return GL_TRUE;
 373          case GL_EQUAL:
 374          case GL_NOTEQUAL:
 375          case GL_LESS:
 376          case GL_GREATER:
 377          case GL_ALWAYS:
 378          case GL_NEVER:
 379             if (ctx->Extensions.EXT_shadow_funcs) {
 380                flush(ctx);
 381                texObj->Sampler.CompareFunc = params[0];
 382                return GL_TRUE;
 383             }
 384             /* fall-through */
 385          default:
 386             goto invalid_param;
 387          }
 388       }
 389       goto invalid_pname;
 390
 391    case GL_DEPTH_TEXTURE_MODE_ARB:
 392       if (ctx->Extensions.ARB_depth_texture) {
 393          if (texObj->DepthMode == params[0])
 394             return GL_FALSE;
 395          if (params[0] == GL_LUMINANCE ||
 396              params[0] == GL_INTENSITY ||
 397              params[0] == GL_ALPHA ||
 398              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 399             flush(ctx);
 400             texObj->DepthMode = params[0];
 401             return GL_TRUE;
 402          }
 403          goto invalid_param;
 404       }
 405       goto invalid_pname;
 406
 407 #if FEATURE_OES_draw_texture
 408    case GL_TEXTURE_CROP_RECT_OES:
 409       texObj->CropRect[0] = params[0];
 410       texObj->CropRect[1] = params[1];
 411       texObj->CropRect[2] = params[2];
 412       texObj->CropRect[3] = params[3];
 413       return GL_TRUE;
 414 #endif
 415
 416    case GL_TEXTURE_SWIZZLE_R_EXT:
 417    case GL_TEXTURE_SWIZZLE_G_EXT:
 418    case GL_TEXTURE_SWIZZLE_B_EXT:
 419    case GL_TEXTURE_SWIZZLE_A_EXT:
 420       if (ctx->Extensions.EXT_texture_swizzle) {
 421          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 422          const GLint swz = comp_to_swizzle(params[0]);
 423          if (swz < 0) {
 424             _mesa_error(ctx, GL_INVALID_OPERATION,
 425                         "glTexParameter(swizzle 0x%x)", params[0]);
 426             return GL_FALSE;
 427          }
 428          ASSERT(comp < 4);
 429
 430          flush(ctx);
 431          texObj->Swizzle[comp] = params[0];
 432          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 433          return GL_TRUE;
 434       }
 435       goto invalid_pname;
 436
 437    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 438       if (ctx->Extensions.EXT_texture_swizzle) {
 439          GLuint comp;
 440          flush(ctx);
 441          for (comp = 0; comp < 4; comp++) {
 442             const GLint swz = comp_to_swizzle(params[comp]);
 443             if (swz >= 0) {
 444                texObj->Swizzle[comp] = params[comp];
 445                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 446             }
 447             else {
 448                _mesa_error(ctx, GL_INVALID_OPERATION,
 449                            "glTexParameter(swizzle 0x%x)", params[comp]);
 450                return GL_FALSE;
 451             }
 452          }
 453          return GL_TRUE;
 454       }
 455       goto invalid_pname;
 456
 457    case GL_TEXTURE_SRGB_DECODE_EXT:
 458       if (ctx->Extensions.EXT_texture_sRGB_decode) {
 459          GLenum decode = params[0];
 460          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 461             if (texObj->Sampler.sRGBDecode != decode) {
 462                flush(ctx);
 463                texObj->Sampler.sRGBDecode = decode;
 464             }
 465             return GL_TRUE;
 466          }
 467       }
 468       goto invalid_pname;
 469
 470    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 471       if (ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 472          GLenum param = params[0];
 473          if (param != GL_TRUE && param != GL_FALSE) {
 474             goto invalid_param;
 475          }
 476          if (param != texObj->Sampler.CubeMapSeamless) {
 477             flush(ctx);
 478             texObj->Sampler.CubeMapSeamless = param;
 479          }
 480          return GL_TRUE;
 481       }
 482       goto invalid_pname;
 483
 484    default:
 485       goto invalid_pname;
 486    }
 487
 488 invalid_pname:
 489    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 490                _mesa_lookup_enum_by_nr(pname));
 491    return GL_FALSE;
 492
 493 invalid_param:
 494    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 495                _mesa_lookup_enum_by_nr(params[0]));
 496    return GL_FALSE;
 497 }
 498
 499
 500 /**
 501  * Set a float-valued texture parameter
 502  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 503  */
 504 static GLboolean
 505 set_tex_parameterf(struct gl_context *ctx,
 506                    struct gl_texture_object *texObj,
 507                    GLenum pname, const GLfloat *params)
 508 {
 509    switch (pname) {
 510    case GL_TEXTURE_MIN_LOD:
 511       if (texObj->Sampler.MinLod == params[0])
 512          return GL_FALSE;
 513       flush(ctx);
 514       texObj->Sampler.MinLod = params[0];
 515       return GL_TRUE;
 516
 517    case GL_TEXTURE_MAX_LOD:
 518       if (texObj->Sampler.MaxLod == params[0])
 519          return GL_FALSE;
 520       flush(ctx);
 521       texObj->Sampler.MaxLod = params[0];
 522       return GL_TRUE;
 523
 524    case GL_TEXTURE_PRIORITY:
 525       flush(ctx);
 526       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 527       return GL_TRUE;
 528
 529    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 530       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 531          if (texObj->Sampler.MaxAnisotropy == params[0])
 532             return GL_FALSE;
 533          if (params[0] < 1.0) {
 534             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 535             return GL_FALSE;
 536          }
 537          flush(ctx);
 538          /* clamp to max, that's what NVIDIA does */
 539          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 540                                       ctx->Const.MaxTextureMaxAnisotropy);
 541          return GL_TRUE;
 542       }
 543       else {
 544          static GLuint count = 0;
 545          if (count++ < 10)
 546             _mesa_error(ctx, GL_INVALID_ENUM,
 547                         "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
 548       }
 549       return GL_FALSE;
 550
 551    case GL_TEXTURE_LOD_BIAS:
 552       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
 553       if (texObj->Sampler.LodBias != params[0]) {
 554          flush(ctx);
 555          texObj->Sampler.LodBias = params[0];
 556          return GL_TRUE;
 557       }
 558       break;
 559
 560    case GL_TEXTURE_BORDER_COLOR:
 561       flush(ctx);
 562       /* ARB_texture_float disables clamping */
 563       if (ctx->Extensions.ARB_texture_float) {
 564          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 565          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 566          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 567          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 568       } else {
 569          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 570          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 571          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 572          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 573       }
 574       return GL_TRUE;
 575
 576    default:
 577       _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
 578    }
 579    return GL_FALSE;
 580 }
 581
 582
 583 void GLAPIENTRY
 584 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 585 {
 586    GLboolean need_update;
 587    struct gl_texture_object *texObj;
 588    GET_CURRENT_CONTEXT(ctx);
 589    ASSERT_OUTSIDE_BEGIN_END(ctx);
 590
 591    texObj = get_texobj(ctx, target, GL_FALSE);
 592    if (!texObj)
 593       return;
 594
 595    switch (pname) {
 596    case GL_TEXTURE_MIN_FILTER:
 597    case GL_TEXTURE_MAG_FILTER:
 598    case GL_TEXTURE_WRAP_S:
 599    case GL_TEXTURE_WRAP_T:
 600    case GL_TEXTURE_WRAP_R:
 601    case GL_TEXTURE_BASE_LEVEL:
 602    case GL_TEXTURE_MAX_LEVEL:
 603    case GL_GENERATE_MIPMAP_SGIS:
 604    case GL_TEXTURE_COMPARE_MODE_ARB:
 605    case GL_TEXTURE_COMPARE_FUNC_ARB:
 606    case GL_DEPTH_TEXTURE_MODE_ARB:
 607    case GL_TEXTURE_SRGB_DECODE_EXT:
 608    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 609       {
 610          /* convert float param to int */
 611          GLint p[4];
 612          p[0] = (GLint) param;
 613          p[1] = p[2] = p[3] = 0;
 614          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 615       }
 616       break;
 617    case GL_TEXTURE_SWIZZLE_R_EXT:
 618    case GL_TEXTURE_SWIZZLE_G_EXT:
 619    case GL_TEXTURE_SWIZZLE_B_EXT:
 620    case GL_TEXTURE_SWIZZLE_A_EXT:
 621       {
 622          GLint p[4];
 623          p[0] = (GLint) param;
 624          p[1] = p[2] = p[3] = 0;
 625          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 626       }
 627       break;
 628    default:
 629       {
 630          /* this will generate an error if pname is illegal */
 631          GLfloat p[4];
 632          p[0] = param;
 633          p[1] = p[2] = p[3] = 0.0F;
 634          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 635       }
 636    }
 637
 638    if (ctx->Driver.TexParameter && need_update) {
 639       ctx->Driver.TexParameter(ctx, target, texObj, pname, &param);
 640    }
 641 }
 642
 643
 644 void GLAPIENTRY
 645 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 646 {
 647    GLboolean need_update;
 648    struct gl_texture_object *texObj;
 649    GET_CURRENT_CONTEXT(ctx);
 650    ASSERT_OUTSIDE_BEGIN_END(ctx);
 651
 652    texObj = get_texobj(ctx, target, GL_FALSE);
 653    if (!texObj)
 654       return;
 655
 656    switch (pname) {
 657    case GL_TEXTURE_MIN_FILTER:
 658    case GL_TEXTURE_MAG_FILTER:
 659    case GL_TEXTURE_WRAP_S:
 660    case GL_TEXTURE_WRAP_T:
 661    case GL_TEXTURE_WRAP_R:
 662    case GL_TEXTURE_BASE_LEVEL:
 663    case GL_TEXTURE_MAX_LEVEL:
 664    case GL_GENERATE_MIPMAP_SGIS:
 665    case GL_TEXTURE_COMPARE_MODE_ARB:
 666    case GL_TEXTURE_COMPARE_FUNC_ARB:
 667    case GL_DEPTH_TEXTURE_MODE_ARB:
 668    case GL_TEXTURE_SRGB_DECODE_EXT:
 669    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 670       {
 671          /* convert float param to int */
 672          GLint p[4];
 673          p[0] = (GLint) params[0];
 674          p[1] = p[2] = p[3] = 0;
 675          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 676       }
 677       break;
 678
 679 #if FEATURE_OES_draw_texture
 680    case GL_TEXTURE_CROP_RECT_OES:
 681       {
 682          /* convert float params to int */
 683          GLint iparams[4];
 684          iparams[0] = (GLint) params[0];
 685          iparams[1] = (GLint) params[1];
 686          iparams[2] = (GLint) params[2];
 687          iparams[3] = (GLint) params[3];
 688          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 689       }
 690       break;
 691 #endif
 692
 693    case GL_TEXTURE_SWIZZLE_R_EXT:
 694    case GL_TEXTURE_SWIZZLE_G_EXT:
 695    case GL_TEXTURE_SWIZZLE_B_EXT:
 696    case GL_TEXTURE_SWIZZLE_A_EXT:
 697    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 698       {
 699          GLint p[4] = {0, 0, 0, 0};
 700          p[0] = (GLint) params[0];
 701          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 702             p[1] = (GLint) params[1];
 703             p[2] = (GLint) params[2];
 704             p[3] = (GLint) params[3];
 705          }
 706          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 707       }
 708       break;
 709    default:
 710       /* this will generate an error if pname is illegal */
 711       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 712    }
 713
 714    if (ctx->Driver.TexParameter && need_update) {
 715       ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
 716    }
 717 }
 718
 719
 720 void GLAPIENTRY
 721 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 722 {
 723    GLboolean need_update;
 724    struct gl_texture_object *texObj;
 725    GET_CURRENT_CONTEXT(ctx);
 726    ASSERT_OUTSIDE_BEGIN_END(ctx);
 727
 728    texObj = get_texobj(ctx, target, GL_FALSE);
 729    if (!texObj)
 730       return;
 731
 732    switch (pname) {
 733    case GL_TEXTURE_MIN_LOD:
 734    case GL_TEXTURE_MAX_LOD:
 735    case GL_TEXTURE_PRIORITY:
 736    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 737    case GL_TEXTURE_LOD_BIAS:
 738    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 739       {
 740          GLfloat fparam[4];
 741          fparam[0] = (GLfloat) param;
 742          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 743          /* convert int param to float */
 744          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 745       }
 746       break;
 747    default:
 748       /* this will generate an error if pname is illegal */
 749       {
 750          GLint iparam[4];
 751          iparam[0] = param;
 752          iparam[1] = iparam[2] = iparam[3] = 0;
 753          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 754       }
 755    }
 756
 757    if (ctx->Driver.TexParameter && need_update) {
 758       GLfloat fparam = (GLfloat) param;
 759       ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
 760    }
 761 }
 762
 763
 764 void GLAPIENTRY
 765 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 766 {
 767    GLboolean need_update;
 768    struct gl_texture_object *texObj;
 769    GET_CURRENT_CONTEXT(ctx);
 770    ASSERT_OUTSIDE_BEGIN_END(ctx);
 771
 772    texObj = get_texobj(ctx, target, GL_FALSE);
 773    if (!texObj)
 774       return;
 775
 776    switch (pname) {
 777    case GL_TEXTURE_BORDER_COLOR:
 778       {
 779          /* convert int params to float */
 780          GLfloat fparams[4];
 781          fparams[0] = INT_TO_FLOAT(params[0]);
 782          fparams[1] = INT_TO_FLOAT(params[1]);
 783          fparams[2] = INT_TO_FLOAT(params[2]);
 784          fparams[3] = INT_TO_FLOAT(params[3]);
 785          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 786       }
 787       break;
 788    case GL_TEXTURE_MIN_LOD:
 789    case GL_TEXTURE_MAX_LOD:
 790    case GL_TEXTURE_PRIORITY:
 791    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 792    case GL_TEXTURE_LOD_BIAS:
 793    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 794       {
 795          /* convert int param to float */
 796          GLfloat fparams[4];
 797          fparams[0] = (GLfloat) params[0];
 798          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 799          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 800       }
 801       break;
 802    default:
 803       /* this will generate an error if pname is illegal */
 804       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 805    }
 806
 807    if (ctx->Driver.TexParameter && need_update) {
 808       GLfloat fparams[4];
 809       fparams[0] = INT_TO_FLOAT(params[0]);
 810       if (pname == GL_TEXTURE_BORDER_COLOR ||
 811           pname == GL_TEXTURE_CROP_RECT_OES) {
 812          fparams[1] = INT_TO_FLOAT(params[1]);
 813          fparams[2] = INT_TO_FLOAT(params[2]);
 814          fparams[3] = INT_TO_FLOAT(params[3]);
 815       }
 816       ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
 817    }
 818 }
 819
 820
 821 /**
 822  * Set tex parameter to integer value(s).  Primarily intended to set
 823  * integer-valued texture border color (for integer-valued textures).
 824  * New in GL 3.0.
 825  */
 826 void GLAPIENTRY
 827 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 828 {
 829    struct gl_texture_object *texObj;
 830    GET_CURRENT_CONTEXT(ctx);
 831    ASSERT_OUTSIDE_BEGIN_END(ctx);
 832
 833    texObj = get_texobj(ctx, target, GL_FALSE);
 834    if (!texObj)
 835       return;
 836
 837    switch (pname) {
 838    case GL_TEXTURE_BORDER_COLOR:
 839       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 840       /* set the integer-valued border color */
 841       COPY_4V(texObj->Sampler.BorderColor.i, params);
 842       break;
 843    default:
 844       _mesa_TexParameteriv(target, pname, params);
 845       break;
 846    }
 847    /* XXX no driver hook for TexParameterIiv() yet */
 848 }
 849
 850
 851 /**
 852  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 853  * uint-valued texture border color (for integer-valued textures).
 854  * New in GL 3.0
 855  */
 856 void GLAPIENTRY
 857 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 858 {
 859    struct gl_texture_object *texObj;
 860    GET_CURRENT_CONTEXT(ctx);
 861    ASSERT_OUTSIDE_BEGIN_END(ctx);
 862
 863    texObj = get_texobj(ctx, target, GL_FALSE);
 864    if (!texObj)
 865       return;
 866
 867    switch (pname) {
 868    case GL_TEXTURE_BORDER_COLOR:
 869       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 870       /* set the unsigned integer-valued border color */
 871       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 872       break;
 873    default:
 874       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 875       break;
 876    }
 877    /* XXX no driver hook for TexParameterIuiv() yet */
 878 }
 879
 880
 881 static GLboolean
 882 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
 883 {
 884    switch (target) {
 885    case GL_TEXTURE_1D:
 886    case GL_PROXY_TEXTURE_1D:
 887    case GL_TEXTURE_2D:
 888    case GL_PROXY_TEXTURE_2D:
 889    case GL_TEXTURE_3D:
 890    case GL_PROXY_TEXTURE_3D:
 891       return GL_TRUE;
 892    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 893    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 894    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 895    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 896    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 897    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 898    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
 899       return ctx->Extensions.ARB_texture_cube_map;
 900    case GL_TEXTURE_RECTANGLE_NV:
 901    case GL_PROXY_TEXTURE_RECTANGLE_NV:
 902       return ctx->Extensions.NV_texture_rectangle;
 903    case GL_TEXTURE_1D_ARRAY_EXT:
 904    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
 905    case GL_TEXTURE_2D_ARRAY_EXT:
 906    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
 907       return (ctx->Extensions.MESA_texture_array ||
 908               ctx->Extensions.EXT_texture_array);
 909    case GL_TEXTURE_BUFFER:
 910       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
 911        * but not in earlier versions that expose ARB_texture_buffer_object.
 912        *
 913        * From the ARB_texture_buffer_object spec:
 914        * "(7) Do buffer textures support texture parameters (TexParameter) or
 915        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
 916        *
 917        *    RESOLVED:  No. [...] Note that the spec edits above don't add
 918        *    explicit error language for any of these cases.  That is because
 919        *    each of the functions enumerate the set of valid <target>
 920        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
 921        *    these cases means that target is not legal, and an INVALID_ENUM
 922        *    error should be generated."
 923        *
 924        * From the OpenGL 3.1 spec:
 925        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
 926        */
 927       return _mesa_is_desktop_gl(ctx) && ctx->Version >= 31;
 928    default:
 929       return GL_FALSE;
 930    }
 931 }
 932
 933
 934 static void
 935 get_tex_level_parameter_image(struct gl_context *ctx,
 936                               const struct gl_texture_object *texObj,
 937                               GLenum target, GLint level,
 938                               GLenum pname, GLint *params)
 939 {
 940    const struct gl_texture_image *img = NULL;
 941    gl_format texFormat;
 942
 943    img = _mesa_select_tex_image(ctx, texObj, target, level);
 944    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
 945       /* undefined texture image */
 946       if (pname == GL_TEXTURE_COMPONENTS)
 947          *params = 1;
 948       else
 949          *params = 0;
 950       return;
 951    }
 952
 953    texFormat = img->TexFormat;
 954
 955    switch (pname) {
 956       case GL_TEXTURE_WIDTH:
 957          *params = img->Width;
 958          break;
 959       case GL_TEXTURE_HEIGHT:
 960          *params = img->Height;
 961          break;
 962       case GL_TEXTURE_DEPTH:
 963          *params = img->Depth;
 964          break;
 965       case GL_TEXTURE_INTERNAL_FORMAT:
 966          if (_mesa_is_format_compressed(texFormat)) {
 967             /* need to return the actual compressed format */
 968             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
 969          }
 970          else {
 971             /* If the true internal format is not compressed but the user
 972              * requested a generic compressed format, we have to return the
 973              * generic base format that matches.
 974              *
 975              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
 976              *
 977              *     "If no specific compressed format is available,
 978              *     internalformat is instead replaced by the corresponding base
 979              *     internal format."
 980              *
 981              * Otherwise just return the user's requested internal format
 982              */
 983             const GLenum f =
 984                _mesa_gl_compressed_format_base_format(img->InternalFormat);
 985
 986             *params = (f != 0) ? f : img->InternalFormat;
 987          }
 988          break;
 989       case GL_TEXTURE_BORDER:
 990          *params = img->Border;
 991          break;
 992       case GL_TEXTURE_RED_SIZE:
 993       case GL_TEXTURE_GREEN_SIZE:
 994       case GL_TEXTURE_BLUE_SIZE:
 995       case GL_TEXTURE_ALPHA_SIZE:
 996          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
 997             *params = _mesa_get_format_bits(texFormat, pname);
 998          else
 999             *params = 0;
1000          break;
1001       case GL_TEXTURE_INTENSITY_SIZE:
1002       case GL_TEXTURE_LUMINANCE_SIZE:
1003          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1004             *params = _mesa_get_format_bits(texFormat, pname);
1005             if (*params == 0) {
1006                /* intensity or luminance is probably stored as RGB[A] */
1007                *params = MIN2(_mesa_get_format_bits(texFormat,
1008                                                     GL_TEXTURE_RED_SIZE),
1009                               _mesa_get_format_bits(texFormat,
1010                                                     GL_TEXTURE_GREEN_SIZE));
1011             }
1012          }
1013          else {
1014             *params = 0;
1015          }
1016          break;
1017       case GL_TEXTURE_DEPTH_SIZE_ARB:
1018          if (!ctx->Extensions.ARB_depth_texture)
1019             goto invalid_pname;
1020          *params = _mesa_get_format_bits(texFormat, pname);
1021          break;
1022       case GL_TEXTURE_STENCIL_SIZE_EXT:
1023          if (!ctx->Extensions.EXT_packed_depth_stencil &&
1024              !ctx->Extensions.ARB_framebuffer_object)
1025             goto invalid_pname;
1026          *params = _mesa_get_format_bits(texFormat, pname);
1027          break;
1028       case GL_TEXTURE_SHARED_SIZE:
1029          if (ctx->Version < 30 &&
1030              !ctx->Extensions.EXT_texture_shared_exponent)
1031             goto invalid_pname;
1032          *params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0;
1033          break;
1034
1035       /* GL_ARB_texture_compression */
1036       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1037          if (_mesa_is_format_compressed(texFormat) &&
1038              !_mesa_is_proxy_texture(target)) {
1039             *params = _mesa_format_image_size(texFormat, img->Width,
1040                                               img->Height, img->Depth);
1041          }
1042          else {
1043             _mesa_error(ctx, GL_INVALID_OPERATION,
1044                         "glGetTexLevelParameter[if]v(pname)");
1045          }
1046          break;
1047       case GL_TEXTURE_COMPRESSED:
1048          *params = (GLint) _mesa_is_format_compressed(texFormat);
1049          break;
1050
1051       /* GL_ARB_texture_float */
1052       case GL_TEXTURE_RED_TYPE_ARB:
1053       case GL_TEXTURE_GREEN_TYPE_ARB:
1054       case GL_TEXTURE_BLUE_TYPE_ARB:
1055       case GL_TEXTURE_ALPHA_TYPE_ARB:
1056       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1057       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1058       case GL_TEXTURE_DEPTH_TYPE_ARB:
1059          if (!ctx->Extensions.ARB_texture_float)
1060             goto invalid_pname;
1061          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1062             *params = _mesa_get_format_datatype(texFormat);
1063          else
1064             *params = GL_NONE;
1065          break;
1066
1067       default:
1068          goto invalid_pname;
1069    }
1070
1071    /* no error if we get here */
1072    return;
1073
1074 invalid_pname:
1075    _mesa_error(ctx, GL_INVALID_ENUM,
1076                "glGetTexLevelParameter[if]v(pname=%s)",
1077                _mesa_lookup_enum_by_nr(pname));
1078 }
1079
1080
1081 static void
1082 get_tex_level_parameter_buffer(struct gl_context *ctx,
1083                                const struct gl_texture_object *texObj,
1084                                GLenum pname, GLint *params)
1085 {
1086    const struct gl_buffer_object *bo = texObj->BufferObject;
1087    gl_format texFormat = texObj->_BufferObjectFormat;
1088    GLenum internalFormat = texObj->BufferObjectFormat;
1089    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1090
1091    if (!bo) {
1092       /* undefined texture buffer object */
1093       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1094       return;
1095    }
1096
1097    switch (pname) {
1098       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1099          *params = bo->Name;
1100          break;
1101       case GL_TEXTURE_WIDTH:
1102          *params = bo->Size;
1103          break;
1104       case GL_TEXTURE_HEIGHT:
1105       case GL_TEXTURE_DEPTH:
1106       case GL_TEXTURE_BORDER:
1107       case GL_TEXTURE_SHARED_SIZE:
1108       case GL_TEXTURE_COMPRESSED:
1109          *params = 0;
1110          break;
1111       case GL_TEXTURE_INTERNAL_FORMAT:
1112          *params = internalFormat;
1113          break;
1114       case GL_TEXTURE_RED_SIZE:
1115       case GL_TEXTURE_GREEN_SIZE:
1116       case GL_TEXTURE_BLUE_SIZE:
1117       case GL_TEXTURE_ALPHA_SIZE:
1118          if (_mesa_base_format_has_channel(baseFormat, pname))
1119             *params = _mesa_get_format_bits(texFormat, pname);
1120          else
1121             *params = 0;
1122          break;
1123       case GL_TEXTURE_INTENSITY_SIZE:
1124       case GL_TEXTURE_LUMINANCE_SIZE:
1125          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1126             *params = _mesa_get_format_bits(texFormat, pname);
1127             if (*params == 0) {
1128                /* intensity or luminance is probably stored as RGB[A] */
1129                *params = MIN2(_mesa_get_format_bits(texFormat,
1130                                                     GL_TEXTURE_RED_SIZE),
1131                               _mesa_get_format_bits(texFormat,
1132                                                     GL_TEXTURE_GREEN_SIZE));
1133             }
1134          } else {
1135             *params = 0;
1136          }
1137          break;
1138       case GL_TEXTURE_DEPTH_SIZE_ARB:
1139       case GL_TEXTURE_STENCIL_SIZE_EXT:
1140          *params = _mesa_get_format_bits(texFormat, pname);
1141          break;
1142
1143       /* GL_ARB_texture_compression */
1144       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1145          /* Always illegal for GL_TEXTURE_BUFFER */
1146          _mesa_error(ctx, GL_INVALID_OPERATION,
1147                      "glGetTexLevelParameter[if]v(pname)");
1148          break;
1149
1150       /* GL_ARB_texture_float */
1151       case GL_TEXTURE_RED_TYPE_ARB:
1152       case GL_TEXTURE_GREEN_TYPE_ARB:
1153       case GL_TEXTURE_BLUE_TYPE_ARB:
1154       case GL_TEXTURE_ALPHA_TYPE_ARB:
1155       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1156       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1157       case GL_TEXTURE_DEPTH_TYPE_ARB:
1158          if (!ctx->Extensions.ARB_texture_float)
1159             goto invalid_pname;
1160          if (_mesa_base_format_has_channel(baseFormat, pname))
1161             *params = _mesa_get_format_datatype(texFormat);
1162          else
1163             *params = GL_NONE;
1164          break;
1165
1166       default:
1167          goto invalid_pname;
1168    }
1169
1170    /* no error if we get here */
1171    return;
1172
1173 invalid_pname:
1174    _mesa_error(ctx, GL_INVALID_ENUM,
1175                "glGetTexLevelParameter[if]v(pname=%s)",
1176                _mesa_lookup_enum_by_nr(pname));
1177 }
1178
1179
1180 void GLAPIENTRY
1181 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1182                               GLenum pname, GLfloat *params )
1183 {
1184    GLint iparam;
1185    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1186    *params = (GLfloat) iparam;
1187 }
1188
1189
1190 void GLAPIENTRY
1191 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1192                               GLenum pname, GLint *params )
1193 {
1194    const struct gl_texture_unit *texUnit;
1195    struct gl_texture_object *texObj;
1196    GLint maxLevels;
1197    GET_CURRENT_CONTEXT(ctx);
1198    ASSERT_OUTSIDE_BEGIN_END(ctx);
1199
1200    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1201       _mesa_error(ctx, GL_INVALID_OPERATION,
1202                   "glGetTexLevelParameteriv(current unit)");
1203       return;
1204    }
1205
1206    texUnit = _mesa_get_current_tex_unit(ctx);
1207
1208    if (!legal_get_tex_level_parameter_target(ctx, target)) {
1209       _mesa_error(ctx, GL_INVALID_ENUM,
1210                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
1211       return;
1212    }
1213
1214    maxLevels = _mesa_max_texture_levels(ctx, target);
1215    assert(maxLevels != 0);
1216
1217    if (level < 0 || level >= maxLevels) {
1218       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1219       return;
1220    }
1221
1222    texObj = _mesa_select_tex_object(ctx, texUnit, target);
1223
1224    if (target == GL_TEXTURE_BUFFER)
1225       get_tex_level_parameter_buffer(ctx, texObj, pname, params);
1226    else
1227       get_tex_level_parameter_image(ctx, texObj, target, level, pname, params);
1228 }
1229
1230
1231 void GLAPIENTRY
1232 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1233 {
1234    struct gl_texture_object *obj;
1235    GET_CURRENT_CONTEXT(ctx);
1236    ASSERT_OUTSIDE_BEGIN_END(ctx);
1237
1238    obj = get_texobj(ctx, target, GL_TRUE);
1239    if (!obj)
1240       return;
1241
1242    _mesa_lock_texture(ctx, obj);
1243    switch (pname) {
1244       case GL_TEXTURE_MAG_FILTER:
1245          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1246          break;
1247       case GL_TEXTURE_MIN_FILTER:
1248          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1249          break;
1250       case GL_TEXTURE_WRAP_S:
1251          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1252          break;
1253       case GL_TEXTURE_WRAP_T:
1254          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1255          break;
1256       case GL_TEXTURE_WRAP_R:
1257          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1258          break;
1259       case GL_TEXTURE_BORDER_COLOR:
1260          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1261             _mesa_update_state_locked(ctx);
1262          if (ctx->Color._ClampFragmentColor) {
1263             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1264             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1265             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1266             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1267          }
1268          else {
1269             params[0] = obj->Sampler.BorderColor.f[0];
1270             params[1] = obj->Sampler.BorderColor.f[1];
1271             params[2] = obj->Sampler.BorderColor.f[2];
1272             params[3] = obj->Sampler.BorderColor.f[3];
1273          }
1274          break;
1275       case GL_TEXTURE_RESIDENT:
1276          *params = 1.0F;
1277          break;
1278       case GL_TEXTURE_PRIORITY:
1279          *params = obj->Priority;
1280          break;
1281       case GL_TEXTURE_MIN_LOD:
1282          *params = obj->Sampler.MinLod;
1283          break;
1284       case GL_TEXTURE_MAX_LOD:
1285          *params = obj->Sampler.MaxLod;
1286          break;
1287       case GL_TEXTURE_BASE_LEVEL:
1288          *params = (GLfloat) obj->BaseLevel;
1289          break;
1290       case GL_TEXTURE_MAX_LEVEL:
1291          *params = (GLfloat) obj->MaxLevel;
1292          break;
1293       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1294          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1295             goto invalid_pname;
1296          *params = obj->Sampler.MaxAnisotropy;
1297          break;
1298       case GL_GENERATE_MIPMAP_SGIS:
1299          *params = (GLfloat) obj->GenerateMipmap;
1300          break;
1301       case GL_TEXTURE_COMPARE_MODE_ARB:
1302          if (!ctx->Extensions.ARB_shadow)
1303             goto invalid_pname;
1304          *params = (GLfloat) obj->Sampler.CompareMode;
1305          break;
1306       case GL_TEXTURE_COMPARE_FUNC_ARB:
1307          if (!ctx->Extensions.ARB_shadow)
1308             goto invalid_pname;
1309          *params = (GLfloat) obj->Sampler.CompareFunc;
1310          break;
1311       case GL_DEPTH_TEXTURE_MODE_ARB:
1312          if (!ctx->Extensions.ARB_depth_texture)
1313             goto invalid_pname;
1314          *params = (GLfloat) obj->DepthMode;
1315          break;
1316       case GL_TEXTURE_LOD_BIAS:
1317          *params = obj->Sampler.LodBias;
1318          break;
1319 #if FEATURE_OES_draw_texture
1320       case GL_TEXTURE_CROP_RECT_OES:
1321          params[0] = obj->CropRect[0];
1322          params[1] = obj->CropRect[1];
1323          params[2] = obj->CropRect[2];
1324          params[3] = obj->CropRect[3];
1325          break;
1326 #endif
1327
1328       case GL_TEXTURE_SWIZZLE_R_EXT:
1329       case GL_TEXTURE_SWIZZLE_G_EXT:
1330       case GL_TEXTURE_SWIZZLE_B_EXT:
1331       case GL_TEXTURE_SWIZZLE_A_EXT:
1332          if (!ctx->Extensions.EXT_texture_swizzle)
1333             goto invalid_pname;
1334          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1335          break;
1336
1337       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1338          if (!ctx->Extensions.EXT_texture_swizzle) {
1339             goto invalid_pname;
1340          }
1341          else {
1342             GLuint comp;
1343             for (comp = 0; comp < 4; comp++) {
1344                params[comp] = (GLfloat) obj->Swizzle[comp];
1345             }
1346          }
1347          break;
1348
1349       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1350          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1351             goto invalid_pname;
1352          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1353          break;
1354
1355       case GL_TEXTURE_IMMUTABLE_FORMAT:
1356          if (!ctx->Extensions.ARB_texture_storage)
1357             goto invalid_pname;
1358          *params = (GLfloat) obj->Immutable;
1359          break;
1360
1361       default:
1362          goto invalid_pname;
1363    }
1364
1365    /* no error if we get here */
1366    _mesa_unlock_texture(ctx, obj);
1367    return;
1368
1369 invalid_pname:
1370    _mesa_unlock_texture(ctx, obj);
1371    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1372 }
1373
1374
1375 void GLAPIENTRY
1376 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1377 {
1378    struct gl_texture_object *obj;
1379    GET_CURRENT_CONTEXT(ctx);
1380    ASSERT_OUTSIDE_BEGIN_END(ctx);
1381
1382    obj = get_texobj(ctx, target, GL_TRUE);
1383    if (!obj)
1384       return;
1385
1386    _mesa_lock_texture(ctx, obj);
1387    switch (pname) {
1388       case GL_TEXTURE_MAG_FILTER:
1389          *params = (GLint) obj->Sampler.MagFilter;
1390          break;
1391       case GL_TEXTURE_MIN_FILTER:
1392          *params = (GLint) obj->Sampler.MinFilter;
1393          break;
1394       case GL_TEXTURE_WRAP_S:
1395          *params = (GLint) obj->Sampler.WrapS;
1396          break;
1397       case GL_TEXTURE_WRAP_T:
1398          *params = (GLint) obj->Sampler.WrapT;
1399          break;
1400       case GL_TEXTURE_WRAP_R:
1401          *params = (GLint) obj->Sampler.WrapR;
1402          break;
1403       case GL_TEXTURE_BORDER_COLOR:
1404          {
1405             GLfloat b[4];
1406             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1407             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1408             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1409             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1410             params[0] = FLOAT_TO_INT(b[0]);
1411             params[1] = FLOAT_TO_INT(b[1]);
1412             params[2] = FLOAT_TO_INT(b[2]);
1413             params[3] = FLOAT_TO_INT(b[3]);
1414          }
1415          break;
1416       case GL_TEXTURE_RESIDENT:
1417          *params = 1;
1418          break;
1419       case GL_TEXTURE_PRIORITY:
1420          *params = FLOAT_TO_INT(obj->Priority);
1421          break;
1422       case GL_TEXTURE_MIN_LOD:
1423          *params = (GLint) obj->Sampler.MinLod;
1424          break;
1425       case GL_TEXTURE_MAX_LOD:
1426          *params = (GLint) obj->Sampler.MaxLod;
1427          break;
1428       case GL_TEXTURE_BASE_LEVEL:
1429          *params = obj->BaseLevel;
1430          break;
1431       case GL_TEXTURE_MAX_LEVEL:
1432          *params = obj->MaxLevel;
1433          break;
1434       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1435          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1436             goto invalid_pname;
1437          *params = (GLint) obj->Sampler.MaxAnisotropy;
1438          break;
1439       case GL_GENERATE_MIPMAP_SGIS:
1440          *params = (GLint) obj->GenerateMipmap;
1441          break;
1442       case GL_TEXTURE_COMPARE_MODE_ARB:
1443          if (!ctx->Extensions.ARB_shadow)
1444             goto invalid_pname;
1445          *params = (GLint) obj->Sampler.CompareMode;
1446          break;
1447       case GL_TEXTURE_COMPARE_FUNC_ARB:
1448          if (!ctx->Extensions.ARB_shadow)
1449             goto invalid_pname;
1450          *params = (GLint) obj->Sampler.CompareFunc;
1451          break;
1452       case GL_DEPTH_TEXTURE_MODE_ARB:
1453          if (!ctx->Extensions.ARB_depth_texture)
1454             goto invalid_pname;
1455          *params = (GLint) obj->DepthMode;
1456          break;
1457       case GL_TEXTURE_LOD_BIAS:
1458          *params = (GLint) obj->Sampler.LodBias;
1459          break;
1460 #if FEATURE_OES_draw_texture
1461       case GL_TEXTURE_CROP_RECT_OES:
1462          params[0] = obj->CropRect[0];
1463          params[1] = obj->CropRect[1];
1464          params[2] = obj->CropRect[2];
1465          params[3] = obj->CropRect[3];
1466          break;
1467 #endif
1468       case GL_TEXTURE_SWIZZLE_R_EXT:
1469       case GL_TEXTURE_SWIZZLE_G_EXT:
1470       case GL_TEXTURE_SWIZZLE_B_EXT:
1471       case GL_TEXTURE_SWIZZLE_A_EXT:
1472          if (!ctx->Extensions.EXT_texture_swizzle)
1473             goto invalid_pname;
1474          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1475          break;
1476
1477       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1478          if (!ctx->Extensions.EXT_texture_swizzle)
1479             goto invalid_pname;
1480          COPY_4V(params, obj->Swizzle);
1481          break;
1482
1483       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1484          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1485             goto invalid_pname;
1486          *params = (GLint) obj->Sampler.CubeMapSeamless;
1487          break;
1488
1489       case GL_TEXTURE_IMMUTABLE_FORMAT:
1490          if (!ctx->Extensions.ARB_texture_storage)
1491             goto invalid_pname;
1492          *params = (GLint) obj->Immutable;
1493          break;
1494
1495       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1496          if (!ctx->Extensions.OES_EGL_image_external)
1497             goto invalid_pname;
1498          *params = obj->RequiredTextureImageUnits;
1499          break;
1500
1501       default:
1502          goto invalid_pname;
1503    }
1504
1505    /* no error if we get here */
1506    _mesa_unlock_texture(ctx, obj);
1507    return;
1508
1509 invalid_pname:
1510    _mesa_unlock_texture(ctx, obj);
1511    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1512 }
1513
1514
1515 /** New in GL 3.0 */
1516 void GLAPIENTRY
1517 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1518 {
1519    struct gl_texture_object *texObj;
1520    GET_CURRENT_CONTEXT(ctx);
1521    ASSERT_OUTSIDE_BEGIN_END(ctx);
1522
1523    texObj = get_texobj(ctx, target, GL_TRUE);
1524    if (!texObj)
1525       return;
1526
1527    switch (pname) {
1528    case GL_TEXTURE_BORDER_COLOR:
1529       COPY_4V(params, texObj->Sampler.BorderColor.i);
1530       break;
1531    default:
1532       _mesa_GetTexParameteriv(target, pname, params);
1533    }
1534 }
1535
1536
1537 /** New in GL 3.0 */
1538 void GLAPIENTRY
1539 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1540 {
1541    struct gl_texture_object *texObj;
1542    GET_CURRENT_CONTEXT(ctx);
1543    ASSERT_OUTSIDE_BEGIN_END(ctx);
1544
1545    texObj = get_texobj(ctx, target, GL_TRUE);
1546    if (!texObj)
1547       return;
1548
1549    switch (pname) {
1550    case GL_TEXTURE_BORDER_COLOR:
1551       COPY_4V(params, texObj->Sampler.BorderColor.i);
1552       break;
1553    default:
1554       {
1555          GLint ip[4];
1556          _mesa_GetTexParameteriv(target, pname, ip);
1557          params[0] = ip[0];
1558          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1559              pname == GL_TEXTURE_CROP_RECT_OES) {
1560             params[1] = ip[1];
1561             params[2] = ip[2];
1562             params[3] = ip[3];
1563          }
1564       }
1565    }
1566 }