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    const bool is_desktop_gl = _mesa_is_desktop_gl(ctx);
  60    bool supported;
  61
  62    switch (wrap) {
  63    case GL_CLAMP:
  64       /* GL_CLAMP was removed in the core profile, and it has never existed in
  65        * OpenGL ES.
  66        */
  67       supported = (ctx->API == API_OPENGL)
  68          && (target != GL_TEXTURE_EXTERNAL_OES);
  69       break;
  70
  71    case GL_CLAMP_TO_EDGE:
  72       supported = true;
  73       break;
  74
  75    case GL_CLAMP_TO_BORDER:
  76       supported = is_desktop_gl && e->ARB_texture_border_clamp
  77          && (target != GL_TEXTURE_EXTERNAL_OES);
  78       break;
  79
  80    case GL_REPEAT:
  81    case GL_MIRRORED_REPEAT:
  82       supported = (target != GL_TEXTURE_RECTANGLE_NV)
  83          && (target != GL_TEXTURE_EXTERNAL_OES);
  84       break;
  85
  86    case GL_MIRROR_CLAMP_EXT:
  87    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  88       supported = is_desktop_gl
  89          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  90          && (target != GL_TEXTURE_RECTANGLE_NV)
  91          && (target != GL_TEXTURE_EXTERNAL_OES);
  92       break;
  93
  94    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
  95       supported = is_desktop_gl && e->EXT_texture_mirror_clamp
  96          && (target != GL_TEXTURE_RECTANGLE_NV)
  97          && (target != GL_TEXTURE_EXTERNAL_OES);
  98       break;
  99
 100    default:
 101       supported = false;
 102       break;
 103    }
 104
 105    if (!supported)
 106       _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
 107
 108    return supported;
 109 }
 110
 111
 112 /**
 113  * Get current texture object for given target.
 114  * Return NULL if any error (and record the error).
 115  * Note that this is different from _mesa_select_tex_object() in that proxy
 116  * targets are not accepted.
 117  * Only the glGetTexLevelParameter() functions accept proxy targets.
 118  */
 119 static struct gl_texture_object *
 120 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
 121 {
 122    struct gl_texture_unit *texUnit;
 123
 124    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 125       _mesa_error(ctx, GL_INVALID_OPERATION,
 126                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 127       return NULL;
 128    }
 129
 130    texUnit = _mesa_get_current_tex_unit(ctx);
 131
 132    switch (target) {
 133    case GL_TEXTURE_1D:
 134       if (_mesa_is_desktop_gl(ctx))
 135          return texUnit->CurrentTex[TEXTURE_1D_INDEX];
 136       break;
 137    case GL_TEXTURE_2D:
 138       return texUnit->CurrentTex[TEXTURE_2D_INDEX];
 139    case GL_TEXTURE_3D:
 140       if (ctx->API != API_OPENGLES)
 141          return texUnit->CurrentTex[TEXTURE_3D_INDEX];
 142       break;
 143    case GL_TEXTURE_CUBE_MAP:
 144       if (ctx->Extensions.ARB_texture_cube_map) {
 145          return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
 146       }
 147       break;
 148    case GL_TEXTURE_RECTANGLE_NV:
 149       if (_mesa_is_desktop_gl(ctx)
 150           && ctx->Extensions.NV_texture_rectangle) {
 151          return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
 152       }
 153       break;
 154    case GL_TEXTURE_1D_ARRAY_EXT:
 155       if (_mesa_is_desktop_gl(ctx)
 156           && (ctx->Extensions.MESA_texture_array ||
 157               ctx->Extensions.EXT_texture_array)) {
 158          return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
 159       }
 160       break;
 161    case GL_TEXTURE_2D_ARRAY_EXT:
 162       if ((_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx))
 163           && (ctx->Extensions.MESA_texture_array ||
 164               ctx->Extensions.EXT_texture_array)) {
 165          return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
 166       }
 167       break;
 168    case GL_TEXTURE_EXTERNAL_OES:
 169       if (_mesa_is_gles(ctx) && ctx->Extensions.OES_EGL_image_external) {
 170          return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX];
 171       }
 172       break;
 173    default:
 174       ;
 175    }
 176
 177    _mesa_error(ctx, GL_INVALID_ENUM,
 178                   "gl%sTexParameter(target)", get ? "Get" : "");
 179    return NULL;
 180 }
 181
 182
 183 /**
 184  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 185  * \return -1 if error.
 186  */
 187 static GLint
 188 comp_to_swizzle(GLenum comp)
 189 {
 190    switch (comp) {
 191    case GL_RED:
 192       return SWIZZLE_X;
 193    case GL_GREEN:
 194       return SWIZZLE_Y;
 195    case GL_BLUE:
 196       return SWIZZLE_Z;
 197    case GL_ALPHA:
 198       return SWIZZLE_W;
 199    case GL_ZERO:
 200       return SWIZZLE_ZERO;
 201    case GL_ONE:
 202       return SWIZZLE_ONE;
 203    default:
 204       return -1;
 205    }
 206 }
 207
 208
 209 static void
 210 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 211 {
 212    ASSERT(comp < 4);
 213    ASSERT(swz <= SWIZZLE_NIL);
 214    {
 215       GLuint mask = 0x7 << (3 * comp);
 216       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 217       *swizzle = s;
 218    }
 219 }
 220
 221
 222 /**
 223  * This is called just prior to changing any texture object state which
 224  * will not effect texture completeness.
 225  */
 226 static inline void
 227 flush(struct gl_context *ctx)
 228 {
 229    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 230 }
 231
 232
 233 /**
 234  * This is called just prior to changing any texture object state which
 235  * can effect texture completeness (texture base level, max level).
 236  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 237  * state flag and then mark the texture object as 'incomplete' so that any
 238  * per-texture derived state gets recomputed.
 239  */
 240 static inline void
 241 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 242 {
 243    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 244    _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 245 }
 246
 247
 248 /**
 249  * Set an integer-valued texture parameter
 250  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 251  */
 252 static GLboolean
 253 set_tex_parameteri(struct gl_context *ctx,
 254                    struct gl_texture_object *texObj,
 255                    GLenum pname, const GLint *params)
 256 {
 257    switch (pname) {
 258    case GL_TEXTURE_MIN_FILTER:
 259       if (texObj->Sampler.MinFilter == params[0])
 260          return GL_FALSE;
 261       switch (params[0]) {
 262       case GL_NEAREST:
 263       case GL_LINEAR:
 264          flush(ctx);
 265          texObj->Sampler.MinFilter = params[0];
 266          return GL_TRUE;
 267       case GL_NEAREST_MIPMAP_NEAREST:
 268       case GL_LINEAR_MIPMAP_NEAREST:
 269       case GL_NEAREST_MIPMAP_LINEAR:
 270       case GL_LINEAR_MIPMAP_LINEAR:
 271          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 272              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 273             flush(ctx);
 274             texObj->Sampler.MinFilter = params[0];
 275             return GL_TRUE;
 276          }
 277          /* fall-through */
 278       default:
 279          goto invalid_param;
 280       }
 281       return GL_FALSE;
 282
 283    case GL_TEXTURE_MAG_FILTER:
 284       if (texObj->Sampler.MagFilter == params[0])
 285          return GL_FALSE;
 286       switch (params[0]) {
 287       case GL_NEAREST:
 288       case GL_LINEAR:
 289          flush(ctx); /* does not effect completeness */
 290          texObj->Sampler.MagFilter = params[0];
 291          return GL_TRUE;
 292       default:
 293          goto invalid_param;
 294       }
 295       return GL_FALSE;
 296
 297    case GL_TEXTURE_WRAP_S:
 298       if (texObj->Sampler.WrapS == params[0])
 299          return GL_FALSE;
 300       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 301          flush(ctx);
 302          texObj->Sampler.WrapS = params[0];
 303          return GL_TRUE;
 304       }
 305       return GL_FALSE;
 306
 307    case GL_TEXTURE_WRAP_T:
 308       if (texObj->Sampler.WrapT == params[0])
 309          return GL_FALSE;
 310       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 311          flush(ctx);
 312          texObj->Sampler.WrapT = params[0];
 313          return GL_TRUE;
 314       }
 315       return GL_FALSE;
 316
 317    case GL_TEXTURE_WRAP_R:
 318       if (texObj->Sampler.WrapR == params[0])
 319          return GL_FALSE;
 320       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 321          flush(ctx);
 322          texObj->Sampler.WrapR = params[0];
 323          return GL_TRUE;
 324       }
 325       return GL_FALSE;
 326
 327    case GL_TEXTURE_BASE_LEVEL:
 328       if (texObj->BaseLevel == params[0])
 329          return GL_FALSE;
 330       if (params[0] < 0 ||
 331           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
 332          _mesa_error(ctx, GL_INVALID_VALUE,
 333                      "glTexParameter(param=%d)", params[0]);
 334          return GL_FALSE;
 335       }
 336       incomplete(ctx, texObj);
 337       texObj->BaseLevel = params[0];
 338       return GL_TRUE;
 339
 340    case GL_TEXTURE_MAX_LEVEL:
 341       if (texObj->MaxLevel == params[0])
 342          return GL_FALSE;
 343       if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
 344          _mesa_error(ctx, GL_INVALID_OPERATION,
 345                      "glTexParameter(param=%d)", params[0]);
 346          return GL_FALSE;
 347       }
 348       incomplete(ctx, texObj);
 349       texObj->MaxLevel = params[0];
 350       return GL_TRUE;
 351
 352    case GL_GENERATE_MIPMAP_SGIS:
 353       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 354          goto invalid_param;
 355       if (texObj->GenerateMipmap != params[0]) {
 356          /* no flush() */
 357          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 358          return GL_TRUE;
 359       }
 360       return GL_FALSE;
 361
 362    case GL_TEXTURE_COMPARE_MODE_ARB:
 363       if (ctx->Extensions.ARB_shadow) {
 364          if (texObj->Sampler.CompareMode == params[0])
 365             return GL_FALSE;
 366          if (params[0] == GL_NONE ||
 367              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 368             flush(ctx);
 369             texObj->Sampler.CompareMode = params[0];
 370             return GL_TRUE;
 371          }
 372          goto invalid_param;
 373       }
 374       goto invalid_pname;
 375
 376    case GL_TEXTURE_COMPARE_FUNC_ARB:
 377       if (ctx->Extensions.ARB_shadow) {
 378          if (texObj->Sampler.CompareFunc == params[0])
 379             return GL_FALSE;
 380          switch (params[0]) {
 381          case GL_LEQUAL:
 382          case GL_GEQUAL:
 383             flush(ctx);
 384             texObj->Sampler.CompareFunc = params[0];
 385             return GL_TRUE;
 386          case GL_EQUAL:
 387          case GL_NOTEQUAL:
 388          case GL_LESS:
 389          case GL_GREATER:
 390          case GL_ALWAYS:
 391          case GL_NEVER:
 392             if (ctx->Extensions.EXT_shadow_funcs) {
 393                flush(ctx);
 394                texObj->Sampler.CompareFunc = params[0];
 395                return GL_TRUE;
 396             }
 397             /* fall-through */
 398          default:
 399             goto invalid_param;
 400          }
 401       }
 402       goto invalid_pname;
 403
 404    case GL_DEPTH_TEXTURE_MODE_ARB:
 405       if (ctx->Extensions.ARB_depth_texture) {
 406          if (texObj->DepthMode == params[0])
 407             return GL_FALSE;
 408          if (params[0] == GL_LUMINANCE ||
 409              params[0] == GL_INTENSITY ||
 410              params[0] == GL_ALPHA ||
 411              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 412             flush(ctx);
 413             texObj->DepthMode = params[0];
 414             return GL_TRUE;
 415          }
 416          goto invalid_param;
 417       }
 418       goto invalid_pname;
 419
 420 #if FEATURE_OES_draw_texture
 421    case GL_TEXTURE_CROP_RECT_OES:
 422       texObj->CropRect[0] = params[0];
 423       texObj->CropRect[1] = params[1];
 424       texObj->CropRect[2] = params[2];
 425       texObj->CropRect[3] = params[3];
 426       return GL_TRUE;
 427 #endif
 428
 429    case GL_TEXTURE_SWIZZLE_R_EXT:
 430    case GL_TEXTURE_SWIZZLE_G_EXT:
 431    case GL_TEXTURE_SWIZZLE_B_EXT:
 432    case GL_TEXTURE_SWIZZLE_A_EXT:
 433       if (ctx->Extensions.EXT_texture_swizzle) {
 434          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 435          const GLint swz = comp_to_swizzle(params[0]);
 436          if (swz < 0) {
 437             _mesa_error(ctx, GL_INVALID_OPERATION,
 438                         "glTexParameter(swizzle 0x%x)", params[0]);
 439             return GL_FALSE;
 440          }
 441          ASSERT(comp < 4);
 442
 443          flush(ctx);
 444          texObj->Swizzle[comp] = params[0];
 445          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 446          return GL_TRUE;
 447       }
 448       goto invalid_pname;
 449
 450    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 451       if (ctx->Extensions.EXT_texture_swizzle) {
 452          GLuint comp;
 453          flush(ctx);
 454          for (comp = 0; comp < 4; comp++) {
 455             const GLint swz = comp_to_swizzle(params[comp]);
 456             if (swz >= 0) {
 457                texObj->Swizzle[comp] = params[comp];
 458                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 459             }
 460             else {
 461                _mesa_error(ctx, GL_INVALID_OPERATION,
 462                            "glTexParameter(swizzle 0x%x)", params[comp]);
 463                return GL_FALSE;
 464             }
 465          }
 466          return GL_TRUE;
 467       }
 468       goto invalid_pname;
 469
 470    case GL_TEXTURE_SRGB_DECODE_EXT:
 471       if (ctx->Extensions.EXT_texture_sRGB_decode) {
 472          GLenum decode = params[0];
 473          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 474             if (texObj->Sampler.sRGBDecode != decode) {
 475                flush(ctx);
 476                texObj->Sampler.sRGBDecode = decode;
 477             }
 478             return GL_TRUE;
 479          }
 480       }
 481       goto invalid_pname;
 482
 483    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 484       if (ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 485          GLenum param = params[0];
 486          if (param != GL_TRUE && param != GL_FALSE) {
 487             goto invalid_param;
 488          }
 489          if (param != texObj->Sampler.CubeMapSeamless) {
 490             flush(ctx);
 491             texObj->Sampler.CubeMapSeamless = param;
 492          }
 493          return GL_TRUE;
 494       }
 495       goto invalid_pname;
 496
 497    default:
 498       goto invalid_pname;
 499    }
 500
 501 invalid_pname:
 502    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=%s)",
 503                _mesa_lookup_enum_by_nr(pname));
 504    return GL_FALSE;
 505
 506 invalid_param:
 507    _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param=%s)",
 508                _mesa_lookup_enum_by_nr(params[0]));
 509    return GL_FALSE;
 510 }
 511
 512
 513 /**
 514  * Set a float-valued texture parameter
 515  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 516  */
 517 static GLboolean
 518 set_tex_parameterf(struct gl_context *ctx,
 519                    struct gl_texture_object *texObj,
 520                    GLenum pname, const GLfloat *params)
 521 {
 522    switch (pname) {
 523    case GL_TEXTURE_MIN_LOD:
 524       if (texObj->Sampler.MinLod == params[0])
 525          return GL_FALSE;
 526       flush(ctx);
 527       texObj->Sampler.MinLod = params[0];
 528       return GL_TRUE;
 529
 530    case GL_TEXTURE_MAX_LOD:
 531       if (texObj->Sampler.MaxLod == params[0])
 532          return GL_FALSE;
 533       flush(ctx);
 534       texObj->Sampler.MaxLod = params[0];
 535       return GL_TRUE;
 536
 537    case GL_TEXTURE_PRIORITY:
 538       flush(ctx);
 539       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 540       return GL_TRUE;
 541
 542    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 543       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 544          if (texObj->Sampler.MaxAnisotropy == params[0])
 545             return GL_FALSE;
 546          if (params[0] < 1.0) {
 547             _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
 548             return GL_FALSE;
 549          }
 550          flush(ctx);
 551          /* clamp to max, that's what NVIDIA does */
 552          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 553                                       ctx->Const.MaxTextureMaxAnisotropy);
 554          return GL_TRUE;
 555       }
 556       else {
 557          static GLuint count = 0;
 558          if (count++ < 10)
 559             _mesa_error(ctx, GL_INVALID_ENUM,
 560                         "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
 561       }
 562       return GL_FALSE;
 563
 564    case GL_TEXTURE_LOD_BIAS:
 565       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
 566       if (texObj->Sampler.LodBias != params[0]) {
 567          flush(ctx);
 568          texObj->Sampler.LodBias = params[0];
 569          return GL_TRUE;
 570       }
 571       break;
 572
 573    case GL_TEXTURE_BORDER_COLOR:
 574       flush(ctx);
 575       /* ARB_texture_float disables clamping */
 576       if (ctx->Extensions.ARB_texture_float) {
 577          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 578          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 579          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 580          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 581       } else {
 582          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 583          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 584          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 585          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 586       }
 587       return GL_TRUE;
 588
 589    default:
 590       _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
 591    }
 592    return GL_FALSE;
 593 }
 594
 595
 596 void GLAPIENTRY
 597 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
 598 {
 599    GLboolean need_update;
 600    struct gl_texture_object *texObj;
 601    GET_CURRENT_CONTEXT(ctx);
 602    ASSERT_OUTSIDE_BEGIN_END(ctx);
 603
 604    texObj = get_texobj(ctx, target, GL_FALSE);
 605    if (!texObj)
 606       return;
 607
 608    switch (pname) {
 609    case GL_TEXTURE_MIN_FILTER:
 610    case GL_TEXTURE_MAG_FILTER:
 611    case GL_TEXTURE_WRAP_S:
 612    case GL_TEXTURE_WRAP_T:
 613    case GL_TEXTURE_WRAP_R:
 614    case GL_TEXTURE_BASE_LEVEL:
 615    case GL_TEXTURE_MAX_LEVEL:
 616    case GL_GENERATE_MIPMAP_SGIS:
 617    case GL_TEXTURE_COMPARE_MODE_ARB:
 618    case GL_TEXTURE_COMPARE_FUNC_ARB:
 619    case GL_DEPTH_TEXTURE_MODE_ARB:
 620    case GL_TEXTURE_SRGB_DECODE_EXT:
 621    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 622       {
 623          /* convert float param to int */
 624          GLint p[4];
 625          p[0] = (GLint) param;
 626          p[1] = p[2] = p[3] = 0;
 627          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 628       }
 629       break;
 630    case GL_TEXTURE_SWIZZLE_R_EXT:
 631    case GL_TEXTURE_SWIZZLE_G_EXT:
 632    case GL_TEXTURE_SWIZZLE_B_EXT:
 633    case GL_TEXTURE_SWIZZLE_A_EXT:
 634       {
 635          GLint p[4];
 636          p[0] = (GLint) param;
 637          p[1] = p[2] = p[3] = 0;
 638          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 639       }
 640       break;
 641    default:
 642       {
 643          /* this will generate an error if pname is illegal */
 644          GLfloat p[4];
 645          p[0] = param;
 646          p[1] = p[2] = p[3] = 0.0F;
 647          need_update = set_tex_parameterf(ctx, texObj, pname, p);
 648       }
 649    }
 650
 651    if (ctx->Driver.TexParameter && need_update) {
 652       ctx->Driver.TexParameter(ctx, target, texObj, pname, &param);
 653    }
 654 }
 655
 656
 657 void GLAPIENTRY
 658 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
 659 {
 660    GLboolean need_update;
 661    struct gl_texture_object *texObj;
 662    GET_CURRENT_CONTEXT(ctx);
 663    ASSERT_OUTSIDE_BEGIN_END(ctx);
 664
 665    texObj = get_texobj(ctx, target, GL_FALSE);
 666    if (!texObj)
 667       return;
 668
 669    switch (pname) {
 670    case GL_TEXTURE_MIN_FILTER:
 671    case GL_TEXTURE_MAG_FILTER:
 672    case GL_TEXTURE_WRAP_S:
 673    case GL_TEXTURE_WRAP_T:
 674    case GL_TEXTURE_WRAP_R:
 675    case GL_TEXTURE_BASE_LEVEL:
 676    case GL_TEXTURE_MAX_LEVEL:
 677    case GL_GENERATE_MIPMAP_SGIS:
 678    case GL_TEXTURE_COMPARE_MODE_ARB:
 679    case GL_TEXTURE_COMPARE_FUNC_ARB:
 680    case GL_DEPTH_TEXTURE_MODE_ARB:
 681    case GL_TEXTURE_SRGB_DECODE_EXT:
 682    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 683       {
 684          /* convert float param to int */
 685          GLint p[4];
 686          p[0] = (GLint) params[0];
 687          p[1] = p[2] = p[3] = 0;
 688          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 689       }
 690       break;
 691
 692 #if FEATURE_OES_draw_texture
 693    case GL_TEXTURE_CROP_RECT_OES:
 694       {
 695          /* convert float params to int */
 696          GLint iparams[4];
 697          iparams[0] = (GLint) params[0];
 698          iparams[1] = (GLint) params[1];
 699          iparams[2] = (GLint) params[2];
 700          iparams[3] = (GLint) params[3];
 701          need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
 702       }
 703       break;
 704 #endif
 705
 706    case GL_TEXTURE_SWIZZLE_R_EXT:
 707    case GL_TEXTURE_SWIZZLE_G_EXT:
 708    case GL_TEXTURE_SWIZZLE_B_EXT:
 709    case GL_TEXTURE_SWIZZLE_A_EXT:
 710    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 711       {
 712          GLint p[4] = {0, 0, 0, 0};
 713          p[0] = (GLint) params[0];
 714          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 715             p[1] = (GLint) params[1];
 716             p[2] = (GLint) params[2];
 717             p[3] = (GLint) params[3];
 718          }
 719          need_update = set_tex_parameteri(ctx, texObj, pname, p);
 720       }
 721       break;
 722    default:
 723       /* this will generate an error if pname is illegal */
 724       need_update = set_tex_parameterf(ctx, texObj, pname, params);
 725    }
 726
 727    if (ctx->Driver.TexParameter && need_update) {
 728       ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
 729    }
 730 }
 731
 732
 733 void GLAPIENTRY
 734 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
 735 {
 736    GLboolean need_update;
 737    struct gl_texture_object *texObj;
 738    GET_CURRENT_CONTEXT(ctx);
 739    ASSERT_OUTSIDE_BEGIN_END(ctx);
 740
 741    texObj = get_texobj(ctx, target, GL_FALSE);
 742    if (!texObj)
 743       return;
 744
 745    switch (pname) {
 746    case GL_TEXTURE_MIN_LOD:
 747    case GL_TEXTURE_MAX_LOD:
 748    case GL_TEXTURE_PRIORITY:
 749    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 750    case GL_TEXTURE_LOD_BIAS:
 751    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 752       {
 753          GLfloat fparam[4];
 754          fparam[0] = (GLfloat) param;
 755          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 756          /* convert int param to float */
 757          need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
 758       }
 759       break;
 760    default:
 761       /* this will generate an error if pname is illegal */
 762       {
 763          GLint iparam[4];
 764          iparam[0] = param;
 765          iparam[1] = iparam[2] = iparam[3] = 0;
 766          need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
 767       }
 768    }
 769
 770    if (ctx->Driver.TexParameter && need_update) {
 771       GLfloat fparam = (GLfloat) param;
 772       ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
 773    }
 774 }
 775
 776
 777 void GLAPIENTRY
 778 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
 779 {
 780    GLboolean need_update;
 781    struct gl_texture_object *texObj;
 782    GET_CURRENT_CONTEXT(ctx);
 783    ASSERT_OUTSIDE_BEGIN_END(ctx);
 784
 785    texObj = get_texobj(ctx, target, GL_FALSE);
 786    if (!texObj)
 787       return;
 788
 789    switch (pname) {
 790    case GL_TEXTURE_BORDER_COLOR:
 791       {
 792          /* convert int params to float */
 793          GLfloat fparams[4];
 794          fparams[0] = INT_TO_FLOAT(params[0]);
 795          fparams[1] = INT_TO_FLOAT(params[1]);
 796          fparams[2] = INT_TO_FLOAT(params[2]);
 797          fparams[3] = INT_TO_FLOAT(params[3]);
 798          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 799       }
 800       break;
 801    case GL_TEXTURE_MIN_LOD:
 802    case GL_TEXTURE_MAX_LOD:
 803    case GL_TEXTURE_PRIORITY:
 804    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 805    case GL_TEXTURE_LOD_BIAS:
 806    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 807       {
 808          /* convert int param to float */
 809          GLfloat fparams[4];
 810          fparams[0] = (GLfloat) params[0];
 811          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 812          need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
 813       }
 814       break;
 815    default:
 816       /* this will generate an error if pname is illegal */
 817       need_update = set_tex_parameteri(ctx, texObj, pname, params);
 818    }
 819
 820    if (ctx->Driver.TexParameter && need_update) {
 821       GLfloat fparams[4];
 822       fparams[0] = INT_TO_FLOAT(params[0]);
 823       if (pname == GL_TEXTURE_BORDER_COLOR ||
 824           pname == GL_TEXTURE_CROP_RECT_OES) {
 825          fparams[1] = INT_TO_FLOAT(params[1]);
 826          fparams[2] = INT_TO_FLOAT(params[2]);
 827          fparams[3] = INT_TO_FLOAT(params[3]);
 828       }
 829       ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
 830    }
 831 }
 832
 833
 834 /**
 835  * Set tex parameter to integer value(s).  Primarily intended to set
 836  * integer-valued texture border color (for integer-valued textures).
 837  * New in GL 3.0.
 838  */
 839 void GLAPIENTRY
 840 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
 841 {
 842    struct gl_texture_object *texObj;
 843    GET_CURRENT_CONTEXT(ctx);
 844    ASSERT_OUTSIDE_BEGIN_END(ctx);
 845
 846    texObj = get_texobj(ctx, target, GL_FALSE);
 847    if (!texObj)
 848       return;
 849
 850    switch (pname) {
 851    case GL_TEXTURE_BORDER_COLOR:
 852       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 853       /* set the integer-valued border color */
 854       COPY_4V(texObj->Sampler.BorderColor.i, params);
 855       break;
 856    default:
 857       _mesa_TexParameteriv(target, pname, params);
 858       break;
 859    }
 860    /* XXX no driver hook for TexParameterIiv() yet */
 861 }
 862
 863
 864 /**
 865  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
 866  * uint-valued texture border color (for integer-valued textures).
 867  * New in GL 3.0
 868  */
 869 void GLAPIENTRY
 870 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
 871 {
 872    struct gl_texture_object *texObj;
 873    GET_CURRENT_CONTEXT(ctx);
 874    ASSERT_OUTSIDE_BEGIN_END(ctx);
 875
 876    texObj = get_texobj(ctx, target, GL_FALSE);
 877    if (!texObj)
 878       return;
 879
 880    switch (pname) {
 881    case GL_TEXTURE_BORDER_COLOR:
 882       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 883       /* set the unsigned integer-valued border color */
 884       COPY_4V(texObj->Sampler.BorderColor.ui, params);
 885       break;
 886    default:
 887       _mesa_TexParameteriv(target, pname, (const GLint *) params);
 888       break;
 889    }
 890    /* XXX no driver hook for TexParameterIuiv() yet */
 891 }
 892
 893
 894 static GLboolean
 895 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
 896 {
 897    switch (target) {
 898    case GL_TEXTURE_1D:
 899    case GL_PROXY_TEXTURE_1D:
 900    case GL_TEXTURE_2D:
 901    case GL_PROXY_TEXTURE_2D:
 902    case GL_TEXTURE_3D:
 903    case GL_PROXY_TEXTURE_3D:
 904       return GL_TRUE;
 905    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 906    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 907    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 908    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 909    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 910    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 911    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
 912       return ctx->Extensions.ARB_texture_cube_map;
 913    case GL_TEXTURE_RECTANGLE_NV:
 914    case GL_PROXY_TEXTURE_RECTANGLE_NV:
 915       return ctx->Extensions.NV_texture_rectangle;
 916    case GL_TEXTURE_1D_ARRAY_EXT:
 917    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
 918    case GL_TEXTURE_2D_ARRAY_EXT:
 919    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
 920       return (ctx->Extensions.MESA_texture_array ||
 921               ctx->Extensions.EXT_texture_array);
 922    case GL_TEXTURE_BUFFER:
 923       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
 924        * but not in earlier versions that expose ARB_texture_buffer_object.
 925        *
 926        * From the ARB_texture_buffer_object spec:
 927        * "(7) Do buffer textures support texture parameters (TexParameter) or
 928        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
 929        *
 930        *    RESOLVED:  No. [...] Note that the spec edits above don't add
 931        *    explicit error language for any of these cases.  That is because
 932        *    each of the functions enumerate the set of valid <target>
 933        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
 934        *    these cases means that target is not legal, and an INVALID_ENUM
 935        *    error should be generated."
 936        *
 937        * From the OpenGL 3.1 spec:
 938        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
 939        */
 940       return _mesa_is_desktop_gl(ctx) && ctx->Version >= 31;
 941    default:
 942       return GL_FALSE;
 943    }
 944 }
 945
 946
 947 static void
 948 get_tex_level_parameter_image(struct gl_context *ctx,
 949                               const struct gl_texture_object *texObj,
 950                               GLenum target, GLint level,
 951                               GLenum pname, GLint *params)
 952 {
 953    const struct gl_texture_image *img = NULL;
 954    gl_format texFormat;
 955
 956    img = _mesa_select_tex_image(ctx, texObj, target, level);
 957    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
 958       /* undefined texture image */
 959       if (pname == GL_TEXTURE_COMPONENTS)
 960          *params = 1;
 961       else
 962          *params = 0;
 963       return;
 964    }
 965
 966    texFormat = img->TexFormat;
 967
 968    switch (pname) {
 969       case GL_TEXTURE_WIDTH:
 970          *params = img->Width;
 971          break;
 972       case GL_TEXTURE_HEIGHT:
 973          *params = img->Height;
 974          break;
 975       case GL_TEXTURE_DEPTH:
 976          *params = img->Depth;
 977          break;
 978       case GL_TEXTURE_INTERNAL_FORMAT:
 979          if (_mesa_is_format_compressed(texFormat)) {
 980             /* need to return the actual compressed format */
 981             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
 982          }
 983          else {
 984             /* If the true internal format is not compressed but the user
 985              * requested a generic compressed format, we have to return the
 986              * generic base format that matches.
 987              *
 988              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
 989              *
 990              *     "If no specific compressed format is available,
 991              *     internalformat is instead replaced by the corresponding base
 992              *     internal format."
 993              *
 994              * Otherwise just return the user's requested internal format
 995              */
 996             const GLenum f =
 997                _mesa_gl_compressed_format_base_format(img->InternalFormat);
 998
 999             *params = (f != 0) ? f : img->InternalFormat;
1000          }
1001          break;
1002       case GL_TEXTURE_BORDER:
1003          *params = img->Border;
1004          break;
1005       case GL_TEXTURE_RED_SIZE:
1006       case GL_TEXTURE_GREEN_SIZE:
1007       case GL_TEXTURE_BLUE_SIZE:
1008       case GL_TEXTURE_ALPHA_SIZE:
1009          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1010             *params = _mesa_get_format_bits(texFormat, pname);
1011          else
1012             *params = 0;
1013          break;
1014       case GL_TEXTURE_INTENSITY_SIZE:
1015       case GL_TEXTURE_LUMINANCE_SIZE:
1016          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1017             *params = _mesa_get_format_bits(texFormat, pname);
1018             if (*params == 0) {
1019                /* intensity or luminance is probably stored as RGB[A] */
1020                *params = MIN2(_mesa_get_format_bits(texFormat,
1021                                                     GL_TEXTURE_RED_SIZE),
1022                               _mesa_get_format_bits(texFormat,
1023                                                     GL_TEXTURE_GREEN_SIZE));
1024             }
1025          }
1026          else {
1027             *params = 0;
1028          }
1029          break;
1030       case GL_TEXTURE_DEPTH_SIZE_ARB:
1031          if (!ctx->Extensions.ARB_depth_texture)
1032             goto invalid_pname;
1033          *params = _mesa_get_format_bits(texFormat, pname);
1034          break;
1035       case GL_TEXTURE_STENCIL_SIZE_EXT:
1036          if (!ctx->Extensions.EXT_packed_depth_stencil &&
1037              !ctx->Extensions.ARB_framebuffer_object)
1038             goto invalid_pname;
1039          *params = _mesa_get_format_bits(texFormat, pname);
1040          break;
1041       case GL_TEXTURE_SHARED_SIZE:
1042          if (ctx->Version < 30 &&
1043              !ctx->Extensions.EXT_texture_shared_exponent)
1044             goto invalid_pname;
1045          *params = texFormat == MESA_FORMAT_RGB9_E5_FLOAT ? 5 : 0;
1046          break;
1047
1048       /* GL_ARB_texture_compression */
1049       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1050          if (_mesa_is_format_compressed(texFormat) &&
1051              !_mesa_is_proxy_texture(target)) {
1052             *params = _mesa_format_image_size(texFormat, img->Width,
1053                                               img->Height, img->Depth);
1054          }
1055          else {
1056             _mesa_error(ctx, GL_INVALID_OPERATION,
1057                         "glGetTexLevelParameter[if]v(pname)");
1058          }
1059          break;
1060       case GL_TEXTURE_COMPRESSED:
1061          *params = (GLint) _mesa_is_format_compressed(texFormat);
1062          break;
1063
1064       /* GL_ARB_texture_float */
1065       case GL_TEXTURE_RED_TYPE_ARB:
1066       case GL_TEXTURE_GREEN_TYPE_ARB:
1067       case GL_TEXTURE_BLUE_TYPE_ARB:
1068       case GL_TEXTURE_ALPHA_TYPE_ARB:
1069       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1070       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1071       case GL_TEXTURE_DEPTH_TYPE_ARB:
1072          if (!ctx->Extensions.ARB_texture_float)
1073             goto invalid_pname;
1074          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1075             *params = _mesa_get_format_datatype(texFormat);
1076          else
1077             *params = GL_NONE;
1078          break;
1079
1080       default:
1081          goto invalid_pname;
1082    }
1083
1084    /* no error if we get here */
1085    return;
1086
1087 invalid_pname:
1088    _mesa_error(ctx, GL_INVALID_ENUM,
1089                "glGetTexLevelParameter[if]v(pname=%s)",
1090                _mesa_lookup_enum_by_nr(pname));
1091 }
1092
1093
1094 static void
1095 get_tex_level_parameter_buffer(struct gl_context *ctx,
1096                                const struct gl_texture_object *texObj,
1097                                GLenum pname, GLint *params)
1098 {
1099    const struct gl_buffer_object *bo = texObj->BufferObject;
1100    gl_format texFormat = texObj->_BufferObjectFormat;
1101    GLenum internalFormat = texObj->BufferObjectFormat;
1102    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1103
1104    if (!bo) {
1105       /* undefined texture buffer object */
1106       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1107       return;
1108    }
1109
1110    switch (pname) {
1111       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1112          *params = bo->Name;
1113          break;
1114       case GL_TEXTURE_WIDTH:
1115          *params = bo->Size;
1116          break;
1117       case GL_TEXTURE_HEIGHT:
1118       case GL_TEXTURE_DEPTH:
1119       case GL_TEXTURE_BORDER:
1120       case GL_TEXTURE_SHARED_SIZE:
1121       case GL_TEXTURE_COMPRESSED:
1122          *params = 0;
1123          break;
1124       case GL_TEXTURE_INTERNAL_FORMAT:
1125          *params = internalFormat;
1126          break;
1127       case GL_TEXTURE_RED_SIZE:
1128       case GL_TEXTURE_GREEN_SIZE:
1129       case GL_TEXTURE_BLUE_SIZE:
1130       case GL_TEXTURE_ALPHA_SIZE:
1131          if (_mesa_base_format_has_channel(baseFormat, pname))
1132             *params = _mesa_get_format_bits(texFormat, pname);
1133          else
1134             *params = 0;
1135          break;
1136       case GL_TEXTURE_INTENSITY_SIZE:
1137       case GL_TEXTURE_LUMINANCE_SIZE:
1138          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1139             *params = _mesa_get_format_bits(texFormat, pname);
1140             if (*params == 0) {
1141                /* intensity or luminance is probably stored as RGB[A] */
1142                *params = MIN2(_mesa_get_format_bits(texFormat,
1143                                                     GL_TEXTURE_RED_SIZE),
1144                               _mesa_get_format_bits(texFormat,
1145                                                     GL_TEXTURE_GREEN_SIZE));
1146             }
1147          } else {
1148             *params = 0;
1149          }
1150          break;
1151       case GL_TEXTURE_DEPTH_SIZE_ARB:
1152       case GL_TEXTURE_STENCIL_SIZE_EXT:
1153          *params = _mesa_get_format_bits(texFormat, pname);
1154          break;
1155
1156       /* GL_ARB_texture_compression */
1157       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1158          /* Always illegal for GL_TEXTURE_BUFFER */
1159          _mesa_error(ctx, GL_INVALID_OPERATION,
1160                      "glGetTexLevelParameter[if]v(pname)");
1161          break;
1162
1163       /* GL_ARB_texture_float */
1164       case GL_TEXTURE_RED_TYPE_ARB:
1165       case GL_TEXTURE_GREEN_TYPE_ARB:
1166       case GL_TEXTURE_BLUE_TYPE_ARB:
1167       case GL_TEXTURE_ALPHA_TYPE_ARB:
1168       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1169       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1170       case GL_TEXTURE_DEPTH_TYPE_ARB:
1171          if (!ctx->Extensions.ARB_texture_float)
1172             goto invalid_pname;
1173          if (_mesa_base_format_has_channel(baseFormat, pname))
1174             *params = _mesa_get_format_datatype(texFormat);
1175          else
1176             *params = GL_NONE;
1177          break;
1178
1179       default:
1180          goto invalid_pname;
1181    }
1182
1183    /* no error if we get here */
1184    return;
1185
1186 invalid_pname:
1187    _mesa_error(ctx, GL_INVALID_ENUM,
1188                "glGetTexLevelParameter[if]v(pname=%s)",
1189                _mesa_lookup_enum_by_nr(pname));
1190 }
1191
1192
1193 void GLAPIENTRY
1194 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1195                               GLenum pname, GLfloat *params )
1196 {
1197    GLint iparam;
1198    _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1199    *params = (GLfloat) iparam;
1200 }
1201
1202
1203 void GLAPIENTRY
1204 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1205                               GLenum pname, GLint *params )
1206 {
1207    const struct gl_texture_unit *texUnit;
1208    struct gl_texture_object *texObj;
1209    GLint maxLevels;
1210    GET_CURRENT_CONTEXT(ctx);
1211    ASSERT_OUTSIDE_BEGIN_END(ctx);
1212
1213    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1214       _mesa_error(ctx, GL_INVALID_OPERATION,
1215                   "glGetTexLevelParameteriv(current unit)");
1216       return;
1217    }
1218
1219    texUnit = _mesa_get_current_tex_unit(ctx);
1220
1221    if (!legal_get_tex_level_parameter_target(ctx, target)) {
1222       _mesa_error(ctx, GL_INVALID_ENUM,
1223                   "glGetTexLevelParameter[if]v(target=0x%x)", target);
1224       return;
1225    }
1226
1227    maxLevels = _mesa_max_texture_levels(ctx, target);
1228    assert(maxLevels != 0);
1229
1230    if (level < 0 || level >= maxLevels) {
1231       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1232       return;
1233    }
1234
1235    texObj = _mesa_select_tex_object(ctx, texUnit, target);
1236
1237    if (target == GL_TEXTURE_BUFFER)
1238       get_tex_level_parameter_buffer(ctx, texObj, pname, params);
1239    else
1240       get_tex_level_parameter_image(ctx, texObj, target, level, pname, params);
1241 }
1242
1243
1244 void GLAPIENTRY
1245 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1246 {
1247    struct gl_texture_object *obj;
1248    GET_CURRENT_CONTEXT(ctx);
1249    ASSERT_OUTSIDE_BEGIN_END(ctx);
1250
1251    obj = get_texobj(ctx, target, GL_TRUE);
1252    if (!obj)
1253       return;
1254
1255    _mesa_lock_texture(ctx, obj);
1256    switch (pname) {
1257       case GL_TEXTURE_MAG_FILTER:
1258          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1259          break;
1260       case GL_TEXTURE_MIN_FILTER:
1261          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1262          break;
1263       case GL_TEXTURE_WRAP_S:
1264          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1265          break;
1266       case GL_TEXTURE_WRAP_T:
1267          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1268          break;
1269       case GL_TEXTURE_WRAP_R:
1270          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1271          break;
1272       case GL_TEXTURE_BORDER_COLOR:
1273          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1274             _mesa_update_state_locked(ctx);
1275          if (ctx->Color._ClampFragmentColor) {
1276             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1277             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1278             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1279             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1280          }
1281          else {
1282             params[0] = obj->Sampler.BorderColor.f[0];
1283             params[1] = obj->Sampler.BorderColor.f[1];
1284             params[2] = obj->Sampler.BorderColor.f[2];
1285             params[3] = obj->Sampler.BorderColor.f[3];
1286          }
1287          break;
1288       case GL_TEXTURE_RESIDENT:
1289          *params = 1.0F;
1290          break;
1291       case GL_TEXTURE_PRIORITY:
1292          *params = obj->Priority;
1293          break;
1294       case GL_TEXTURE_MIN_LOD:
1295          *params = obj->Sampler.MinLod;
1296          break;
1297       case GL_TEXTURE_MAX_LOD:
1298          *params = obj->Sampler.MaxLod;
1299          break;
1300       case GL_TEXTURE_BASE_LEVEL:
1301          *params = (GLfloat) obj->BaseLevel;
1302          break;
1303       case GL_TEXTURE_MAX_LEVEL:
1304          *params = (GLfloat) obj->MaxLevel;
1305          break;
1306       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1307          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1308             goto invalid_pname;
1309          *params = obj->Sampler.MaxAnisotropy;
1310          break;
1311       case GL_GENERATE_MIPMAP_SGIS:
1312          *params = (GLfloat) obj->GenerateMipmap;
1313          break;
1314       case GL_TEXTURE_COMPARE_MODE_ARB:
1315          if (!ctx->Extensions.ARB_shadow)
1316             goto invalid_pname;
1317          *params = (GLfloat) obj->Sampler.CompareMode;
1318          break;
1319       case GL_TEXTURE_COMPARE_FUNC_ARB:
1320          if (!ctx->Extensions.ARB_shadow)
1321             goto invalid_pname;
1322          *params = (GLfloat) obj->Sampler.CompareFunc;
1323          break;
1324       case GL_DEPTH_TEXTURE_MODE_ARB:
1325          if (!ctx->Extensions.ARB_depth_texture)
1326             goto invalid_pname;
1327          *params = (GLfloat) obj->DepthMode;
1328          break;
1329       case GL_TEXTURE_LOD_BIAS:
1330          *params = obj->Sampler.LodBias;
1331          break;
1332 #if FEATURE_OES_draw_texture
1333       case GL_TEXTURE_CROP_RECT_OES:
1334          params[0] = obj->CropRect[0];
1335          params[1] = obj->CropRect[1];
1336          params[2] = obj->CropRect[2];
1337          params[3] = obj->CropRect[3];
1338          break;
1339 #endif
1340
1341       case GL_TEXTURE_SWIZZLE_R_EXT:
1342       case GL_TEXTURE_SWIZZLE_G_EXT:
1343       case GL_TEXTURE_SWIZZLE_B_EXT:
1344       case GL_TEXTURE_SWIZZLE_A_EXT:
1345          if (!ctx->Extensions.EXT_texture_swizzle)
1346             goto invalid_pname;
1347          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1348          break;
1349
1350       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1351          if (!ctx->Extensions.EXT_texture_swizzle) {
1352             goto invalid_pname;
1353          }
1354          else {
1355             GLuint comp;
1356             for (comp = 0; comp < 4; comp++) {
1357                params[comp] = (GLfloat) obj->Swizzle[comp];
1358             }
1359          }
1360          break;
1361
1362       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1363          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1364             goto invalid_pname;
1365          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1366          break;
1367
1368       case GL_TEXTURE_IMMUTABLE_FORMAT:
1369          if (!ctx->Extensions.ARB_texture_storage)
1370             goto invalid_pname;
1371          *params = (GLfloat) obj->Immutable;
1372          break;
1373
1374       default:
1375          goto invalid_pname;
1376    }
1377
1378    /* no error if we get here */
1379    _mesa_unlock_texture(ctx, obj);
1380    return;
1381
1382 invalid_pname:
1383    _mesa_unlock_texture(ctx, obj);
1384    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname);
1385 }
1386
1387
1388 void GLAPIENTRY
1389 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1390 {
1391    struct gl_texture_object *obj;
1392    GET_CURRENT_CONTEXT(ctx);
1393    ASSERT_OUTSIDE_BEGIN_END(ctx);
1394
1395    obj = get_texobj(ctx, target, GL_TRUE);
1396    if (!obj)
1397       return;
1398
1399    _mesa_lock_texture(ctx, obj);
1400    switch (pname) {
1401       case GL_TEXTURE_MAG_FILTER:
1402          *params = (GLint) obj->Sampler.MagFilter;
1403          break;
1404       case GL_TEXTURE_MIN_FILTER:
1405          *params = (GLint) obj->Sampler.MinFilter;
1406          break;
1407       case GL_TEXTURE_WRAP_S:
1408          *params = (GLint) obj->Sampler.WrapS;
1409          break;
1410       case GL_TEXTURE_WRAP_T:
1411          *params = (GLint) obj->Sampler.WrapT;
1412          break;
1413       case GL_TEXTURE_WRAP_R:
1414          *params = (GLint) obj->Sampler.WrapR;
1415          break;
1416       case GL_TEXTURE_BORDER_COLOR:
1417          {
1418             GLfloat b[4];
1419             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1420             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1421             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1422             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1423             params[0] = FLOAT_TO_INT(b[0]);
1424             params[1] = FLOAT_TO_INT(b[1]);
1425             params[2] = FLOAT_TO_INT(b[2]);
1426             params[3] = FLOAT_TO_INT(b[3]);
1427          }
1428          break;
1429       case GL_TEXTURE_RESIDENT:
1430          *params = 1;
1431          break;
1432       case GL_TEXTURE_PRIORITY:
1433          *params = FLOAT_TO_INT(obj->Priority);
1434          break;
1435       case GL_TEXTURE_MIN_LOD:
1436          *params = (GLint) obj->Sampler.MinLod;
1437          break;
1438       case GL_TEXTURE_MAX_LOD:
1439          *params = (GLint) obj->Sampler.MaxLod;
1440          break;
1441       case GL_TEXTURE_BASE_LEVEL:
1442          *params = obj->BaseLevel;
1443          break;
1444       case GL_TEXTURE_MAX_LEVEL:
1445          *params = obj->MaxLevel;
1446          break;
1447       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1448          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1449             goto invalid_pname;
1450          *params = (GLint) obj->Sampler.MaxAnisotropy;
1451          break;
1452       case GL_GENERATE_MIPMAP_SGIS:
1453          *params = (GLint) obj->GenerateMipmap;
1454          break;
1455       case GL_TEXTURE_COMPARE_MODE_ARB:
1456          if (!ctx->Extensions.ARB_shadow)
1457             goto invalid_pname;
1458          *params = (GLint) obj->Sampler.CompareMode;
1459          break;
1460       case GL_TEXTURE_COMPARE_FUNC_ARB:
1461          if (!ctx->Extensions.ARB_shadow)
1462             goto invalid_pname;
1463          *params = (GLint) obj->Sampler.CompareFunc;
1464          break;
1465       case GL_DEPTH_TEXTURE_MODE_ARB:
1466          if (!ctx->Extensions.ARB_depth_texture)
1467             goto invalid_pname;
1468          *params = (GLint) obj->DepthMode;
1469          break;
1470       case GL_TEXTURE_LOD_BIAS:
1471          *params = (GLint) obj->Sampler.LodBias;
1472          break;
1473 #if FEATURE_OES_draw_texture
1474       case GL_TEXTURE_CROP_RECT_OES:
1475          params[0] = obj->CropRect[0];
1476          params[1] = obj->CropRect[1];
1477          params[2] = obj->CropRect[2];
1478          params[3] = obj->CropRect[3];
1479          break;
1480 #endif
1481       case GL_TEXTURE_SWIZZLE_R_EXT:
1482       case GL_TEXTURE_SWIZZLE_G_EXT:
1483       case GL_TEXTURE_SWIZZLE_B_EXT:
1484       case GL_TEXTURE_SWIZZLE_A_EXT:
1485          if (!ctx->Extensions.EXT_texture_swizzle)
1486             goto invalid_pname;
1487          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1488          break;
1489
1490       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1491          if (!ctx->Extensions.EXT_texture_swizzle)
1492             goto invalid_pname;
1493          COPY_4V(params, obj->Swizzle);
1494          break;
1495
1496       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1497          if (!ctx->Extensions.AMD_seamless_cubemap_per_texture)
1498             goto invalid_pname;
1499          *params = (GLint) obj->Sampler.CubeMapSeamless;
1500          break;
1501
1502       case GL_TEXTURE_IMMUTABLE_FORMAT:
1503          if (!ctx->Extensions.ARB_texture_storage)
1504             goto invalid_pname;
1505          *params = (GLint) obj->Immutable;
1506          break;
1507
1508       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1509          if (!ctx->Extensions.OES_EGL_image_external)
1510             goto invalid_pname;
1511          *params = obj->RequiredTextureImageUnits;
1512          break;
1513
1514       default:
1515          goto invalid_pname;
1516    }
1517
1518    /* no error if we get here */
1519    _mesa_unlock_texture(ctx, obj);
1520    return;
1521
1522 invalid_pname:
1523    _mesa_unlock_texture(ctx, obj);
1524    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
1525 }
1526
1527
1528 /** New in GL 3.0 */
1529 void GLAPIENTRY
1530 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1531 {
1532    struct gl_texture_object *texObj;
1533    GET_CURRENT_CONTEXT(ctx);
1534    ASSERT_OUTSIDE_BEGIN_END(ctx);
1535
1536    texObj = get_texobj(ctx, target, GL_TRUE);
1537    if (!texObj)
1538       return;
1539
1540    switch (pname) {
1541    case GL_TEXTURE_BORDER_COLOR:
1542       COPY_4V(params, texObj->Sampler.BorderColor.i);
1543       break;
1544    default:
1545       _mesa_GetTexParameteriv(target, pname, params);
1546    }
1547 }
1548
1549
1550 /** New in GL 3.0 */
1551 void GLAPIENTRY
1552 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1553 {
1554    struct gl_texture_object *texObj;
1555    GET_CURRENT_CONTEXT(ctx);
1556    ASSERT_OUTSIDE_BEGIN_END(ctx);
1557
1558    texObj = get_texobj(ctx, target, GL_TRUE);
1559    if (!texObj)
1560       return;
1561
1562    switch (pname) {
1563    case GL_TEXTURE_BORDER_COLOR:
1564       COPY_4V(params, texObj->Sampler.BorderColor.i);
1565       break;
1566    default:
1567       {
1568          GLint ip[4];
1569          _mesa_GetTexParameteriv(target, pname, ip);
1570          params[0] = ip[0];
1571          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1572              pname == GL_TEXTURE_CROP_RECT_OES) {
1573             params[1] = ip[1];
1574             params[2] = ip[2];
1575             params[3] = ip[3];
1576          }
1577       }
1578    }
1579 }