src/mesa/main/texparam.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * 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/blend.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/mtypes.h"
  41 #include "main/state.h"
  42 #include "main/texcompress.h"
  43 #include "main/texobj.h"
  44 #include "main/texparam.h"
  45 #include "main/teximage.h"
  46 #include "main/texstate.h"
  47 #include "program/prog_instruction.h"
  48
  49
  50 /**
  51  * Check if a coordinate wrap mode is supported for the texture target.
  52  * \return GL_TRUE if legal, GL_FALSE otherwise
  53  */
  54 static GLboolean
  55 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
  56 {
  57    const struct gl_extensions * const e = & ctx->Extensions;
  58    const bool is_desktop_gl = _mesa_is_desktop_gl(ctx);
  59    bool supported;
  60
  61    switch (wrap) {
  62    case GL_CLAMP:
  63       /* GL_CLAMP was removed in the core profile, and it has never existed in
  64        * OpenGL ES.
  65        */
  66       supported = (ctx->API == API_OPENGL_COMPAT)
  67          && (target != GL_TEXTURE_EXTERNAL_OES);
  68       break;
  69
  70    case GL_CLAMP_TO_EDGE:
  71       supported = true;
  72       break;
  73
  74    case GL_CLAMP_TO_BORDER:
  75       supported = is_desktop_gl && e->ARB_texture_border_clamp
  76          && (target != GL_TEXTURE_EXTERNAL_OES);
  77       break;
  78
  79    case GL_REPEAT:
  80    case GL_MIRRORED_REPEAT:
  81       supported = (target != GL_TEXTURE_RECTANGLE_NV)
  82          && (target != GL_TEXTURE_EXTERNAL_OES);
  83       break;
  84
  85    case GL_MIRROR_CLAMP_EXT:
  86       supported = is_desktop_gl
  87          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  88          && (target != GL_TEXTURE_RECTANGLE_NV)
  89          && (target != GL_TEXTURE_EXTERNAL_OES);
  90       break;
  91
  92    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  93       supported = is_desktop_gl
  94          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp || e->ARB_texture_mirror_clamp_to_edge)
  95          && (target != GL_TEXTURE_RECTANGLE_NV)
  96          && (target != GL_TEXTURE_EXTERNAL_OES);
  97       break;
  98
  99    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
 100       supported = is_desktop_gl && e->EXT_texture_mirror_clamp
 101          && (target != GL_TEXTURE_RECTANGLE_NV)
 102          && (target != GL_TEXTURE_EXTERNAL_OES);
 103       break;
 104
 105    default:
 106       supported = false;
 107       break;
 108    }
 109
 110    if (!supported)
 111       _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
 112
 113    return supported;
 114 }
 115
 116
 117 /**
 118  * Get current texture object for given target.
 119  * Return NULL if any error (and record the error).
 120  * Note that this is different from _mesa_get_current_tex_object() in that
 121  * proxy targets are not accepted.
 122  * Only the glGetTexLevelParameter() functions accept proxy targets.
 123  */
 124 static struct gl_texture_object *
 125 get_texobj_by_target(struct gl_context *ctx, GLenum target, GLboolean get)
 126 {
 127    struct gl_texture_unit *texUnit;
 128    int targetIndex;
 129
 130    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 131       _mesa_error(ctx, GL_INVALID_OPERATION,
 132                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 133       return NULL;
 134    }
 135
 136    texUnit = _mesa_get_current_tex_unit(ctx);
 137
 138    targetIndex = _mesa_tex_target_to_index(ctx, target);
 139    if (targetIndex < 0 || targetIndex == TEXTURE_BUFFER_INDEX) {
 140       _mesa_error(ctx, GL_INVALID_ENUM,
 141                   "gl%sTexParameter(target)", get ? "Get" : "");
 142       return NULL;
 143    }
 144    assert(targetIndex < NUM_TEXTURE_TARGETS);
 145
 146    return texUnit->CurrentTex[targetIndex];
 147 }
 148
 149 /**
 150  * Get current texture object for given name.
 151  * Return NULL if any error (and record the error).
 152  * Note that proxy targets are not accepted.
 153  * Only the glGetTexLevelParameter() functions accept proxy targets.
 154  */
 155 static struct gl_texture_object *
 156 get_texobj_by_name(struct gl_context *ctx, GLuint texture, GLboolean get)
 157 {
 158    struct gl_texture_object *texObj;
 159
 160    texObj = _mesa_lookup_texture(ctx, texture);
 161    if (!texObj) {
 162       /*
 163        * User passed a non-generated name.
 164        * Throw the error in the caller.
 165        */
 166       return NULL;
 167    }
 168
 169    switch (texObj->Target) {
 170    case GL_TEXTURE_1D:
 171    case GL_TEXTURE_1D_ARRAY:
 172    case GL_TEXTURE_2D:
 173    case GL_TEXTURE_2D_ARRAY:
 174    case GL_TEXTURE_2D_MULTISAMPLE:
 175    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 176    case GL_TEXTURE_3D:
 177    case GL_TEXTURE_CUBE_MAP:
 178    case GL_TEXTURE_CUBE_MAP_ARRAY:
 179    case GL_TEXTURE_RECTANGLE:
 180       return texObj;
 181    default:
 182       _mesa_error(ctx, GL_INVALID_ENUM,
 183                   "gl%sTextureParameter(target)", get ? "Get" : "");
 184       return NULL;
 185    }
 186
 187 }
 188
 189
 190 /**
 191  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 192  * \return -1 if error.
 193  */
 194 static GLint
 195 comp_to_swizzle(GLenum comp)
 196 {
 197    switch (comp) {
 198    case GL_RED:
 199       return SWIZZLE_X;
 200    case GL_GREEN:
 201       return SWIZZLE_Y;
 202    case GL_BLUE:
 203       return SWIZZLE_Z;
 204    case GL_ALPHA:
 205       return SWIZZLE_W;
 206    case GL_ZERO:
 207       return SWIZZLE_ZERO;
 208    case GL_ONE:
 209       return SWIZZLE_ONE;
 210    default:
 211       return -1;
 212    }
 213 }
 214
 215
 216 static void
 217 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 218 {
 219    assert(comp < 4);
 220    assert(swz <= SWIZZLE_NIL);
 221    {
 222       GLuint mask = 0x7 << (3 * comp);
 223       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 224       *swizzle = s;
 225    }
 226 }
 227
 228
 229 /**
 230  * This is called just prior to changing any texture object state which
 231  * will not affect texture completeness.
 232  */
 233 static inline void
 234 flush(struct gl_context *ctx)
 235 {
 236    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 237 }
 238
 239
 240 /**
 241  * This is called just prior to changing any texture object state which
 242  * could affect texture completeness (texture base level, max level).
 243  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 244  * state flag and then mark the texture object as 'incomplete' so that any
 245  * per-texture derived state gets recomputed.
 246  */
 247 static inline void
 248 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 249 {
 250    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 251    _mesa_dirty_texobj(ctx, texObj);
 252 }
 253
 254
 255 static GLboolean
 256 target_allows_setting_sampler_parameters(GLenum target)
 257 {
 258    switch (target) {
 259    case GL_TEXTURE_2D_MULTISAMPLE:
 260    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 261       return GL_FALSE;
 262
 263    default:
 264       return GL_TRUE;
 265    }
 266 }
 267
 268
 269 /**
 270  * Set an integer-valued texture parameter
 271  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 272  */
 273 static GLboolean
 274 set_tex_parameteri(struct gl_context *ctx,
 275                    struct gl_texture_object *texObj,
 276                    GLenum pname, const GLint *params, bool dsa)
 277 {
 278    const char *suffix = dsa ? "ture" : "";
 279
 280    switch (pname) {
 281    case GL_TEXTURE_MIN_FILTER:
 282       if (!target_allows_setting_sampler_parameters(texObj->Target))
 283          goto invalid_enum;
 284
 285       if (texObj->Sampler.MinFilter == params[0])
 286          return GL_FALSE;
 287       switch (params[0]) {
 288       case GL_NEAREST:
 289       case GL_LINEAR:
 290          flush(ctx);
 291          texObj->Sampler.MinFilter = params[0];
 292          return GL_TRUE;
 293       case GL_NEAREST_MIPMAP_NEAREST:
 294       case GL_LINEAR_MIPMAP_NEAREST:
 295       case GL_NEAREST_MIPMAP_LINEAR:
 296       case GL_LINEAR_MIPMAP_LINEAR:
 297          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 298              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 299             flush(ctx);
 300             texObj->Sampler.MinFilter = params[0];
 301             return GL_TRUE;
 302          }
 303          /* fall-through */
 304       default:
 305          goto invalid_param;
 306       }
 307       return GL_FALSE;
 308
 309    case GL_TEXTURE_MAG_FILTER:
 310       if (!target_allows_setting_sampler_parameters(texObj->Target))
 311          goto invalid_enum;
 312
 313       if (texObj->Sampler.MagFilter == params[0])
 314          return GL_FALSE;
 315       switch (params[0]) {
 316       case GL_NEAREST:
 317       case GL_LINEAR:
 318          flush(ctx); /* does not effect completeness */
 319          texObj->Sampler.MagFilter = params[0];
 320          return GL_TRUE;
 321       default:
 322          goto invalid_param;
 323       }
 324       return GL_FALSE;
 325
 326    case GL_TEXTURE_WRAP_S:
 327       if (!target_allows_setting_sampler_parameters(texObj->Target))
 328          goto invalid_enum;
 329
 330       if (texObj->Sampler.WrapS == params[0])
 331          return GL_FALSE;
 332       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 333          flush(ctx);
 334          texObj->Sampler.WrapS = params[0];
 335          return GL_TRUE;
 336       }
 337       return GL_FALSE;
 338
 339    case GL_TEXTURE_WRAP_T:
 340       if (!target_allows_setting_sampler_parameters(texObj->Target))
 341          goto invalid_enum;
 342
 343       if (texObj->Sampler.WrapT == params[0])
 344          return GL_FALSE;
 345       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 346          flush(ctx);
 347          texObj->Sampler.WrapT = params[0];
 348          return GL_TRUE;
 349       }
 350       return GL_FALSE;
 351
 352    case GL_TEXTURE_WRAP_R:
 353       if (!target_allows_setting_sampler_parameters(texObj->Target))
 354          goto invalid_enum;
 355
 356       if (texObj->Sampler.WrapR == params[0])
 357          return GL_FALSE;
 358       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 359          flush(ctx);
 360          texObj->Sampler.WrapR = params[0];
 361          return GL_TRUE;
 362       }
 363       return GL_FALSE;
 364
 365    case GL_TEXTURE_BASE_LEVEL:
 366       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 367          goto invalid_pname;
 368
 369       if (texObj->BaseLevel == params[0])
 370          return GL_FALSE;
 371
 372       if ((texObj->Target == GL_TEXTURE_2D_MULTISAMPLE ||
 373            texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) && params[0] != 0)
 374          goto invalid_operation;
 375
 376       if (params[0] < 0) {
 377          _mesa_error(ctx, GL_INVALID_VALUE,
 378                      "glTex%sParameter(param=%d)", suffix, params[0]);
 379          return GL_FALSE;
 380       }
 381       if (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0) {
 382          _mesa_error(ctx, GL_INVALID_OPERATION,
 383                      "glTex%sParameter(target=%s, param=%d)", suffix,
 384                      _mesa_lookup_enum_by_nr(texObj->Target), params[0]);
 385          return GL_FALSE;
 386       }
 387       incomplete(ctx, texObj);
 388
 389       /** See note about ARB_texture_storage below */
 390       if (texObj->Immutable)
 391          texObj->BaseLevel = MIN2(texObj->ImmutableLevels - 1, params[0]);
 392       else
 393          texObj->BaseLevel = params[0];
 394
 395       return GL_TRUE;
 396
 397    case GL_TEXTURE_MAX_LEVEL:
 398       if (texObj->MaxLevel == params[0])
 399          return GL_FALSE;
 400
 401       if (params[0] < 0 ||
 402           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] > 0)) {
 403          _mesa_error(ctx, GL_INVALID_VALUE,
 404                      "glTex%sParameter(param=%d)", suffix,
 405                      params[0]);
 406          return GL_FALSE;
 407       }
 408       incomplete(ctx, texObj);
 409
 410       /** From ARB_texture_storage:
 411        * However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then level_base is
 412        * clamped to the range [0, <levels> - 1] and level_max is then clamped to
 413        * the range [level_base, <levels> - 1], where <levels> is the parameter
 414        * passed the call to TexStorage* for the texture object.
 415        */
 416       if (texObj->Immutable)
 417           texObj->MaxLevel = CLAMP(params[0], texObj->BaseLevel,
 418                                    texObj->ImmutableLevels - 1);
 419       else
 420          texObj->MaxLevel = params[0];
 421
 422       return GL_TRUE;
 423
 424    case GL_GENERATE_MIPMAP_SGIS:
 425       if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
 426          goto invalid_pname;
 427
 428       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 429          goto invalid_param;
 430       if (texObj->GenerateMipmap != params[0]) {
 431          /* no flush() */
 432          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 433          return GL_TRUE;
 434       }
 435       return GL_FALSE;
 436
 437    case GL_TEXTURE_COMPARE_MODE_ARB:
 438       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 439           || _mesa_is_gles3(ctx)) {
 440
 441          if (!target_allows_setting_sampler_parameters(texObj->Target))
 442             goto invalid_enum;
 443
 444          if (texObj->Sampler.CompareMode == params[0])
 445             return GL_FALSE;
 446          if (params[0] == GL_NONE ||
 447              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 448             flush(ctx);
 449             texObj->Sampler.CompareMode = params[0];
 450             return GL_TRUE;
 451          }
 452          goto invalid_param;
 453       }
 454       goto invalid_pname;
 455
 456    case GL_TEXTURE_COMPARE_FUNC_ARB:
 457       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 458           || _mesa_is_gles3(ctx)) {
 459
 460          if (!target_allows_setting_sampler_parameters(texObj->Target))
 461             goto invalid_enum;
 462
 463          if (texObj->Sampler.CompareFunc == params[0])
 464             return GL_FALSE;
 465          switch (params[0]) {
 466          case GL_LEQUAL:
 467          case GL_GEQUAL:
 468          case GL_EQUAL:
 469          case GL_NOTEQUAL:
 470          case GL_LESS:
 471          case GL_GREATER:
 472          case GL_ALWAYS:
 473          case GL_NEVER:
 474             flush(ctx);
 475             texObj->Sampler.CompareFunc = params[0];
 476             return GL_TRUE;
 477          default:
 478             goto invalid_param;
 479          }
 480       }
 481       goto invalid_pname;
 482
 483    case GL_DEPTH_TEXTURE_MODE_ARB:
 484       /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has never
 485        * existed in OpenGL ES.
 486        */
 487       if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_texture) {
 488          if (texObj->DepthMode == params[0])
 489             return GL_FALSE;
 490          if (params[0] == GL_LUMINANCE ||
 491              params[0] == GL_INTENSITY ||
 492              params[0] == GL_ALPHA ||
 493              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 494             flush(ctx);
 495             texObj->DepthMode = params[0];
 496             return GL_TRUE;
 497          }
 498          goto invalid_param;
 499       }
 500       goto invalid_pname;
 501
 502    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 503       if (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_stencil_texturing) {
 504          bool stencil = params[0] == GL_STENCIL_INDEX;
 505          if (!stencil && params[0] != GL_DEPTH_COMPONENT)
 506             goto invalid_param;
 507
 508          if (texObj->StencilSampling == stencil)
 509             return GL_FALSE;
 510
 511          texObj->StencilSampling = stencil;
 512          return GL_TRUE;
 513       }
 514       goto invalid_pname;
 515
 516    case GL_TEXTURE_CROP_RECT_OES:
 517       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 518          goto invalid_pname;
 519
 520       texObj->CropRect[0] = params[0];
 521       texObj->CropRect[1] = params[1];
 522       texObj->CropRect[2] = params[2];
 523       texObj->CropRect[3] = params[3];
 524       return GL_TRUE;
 525
 526    case GL_TEXTURE_SWIZZLE_R_EXT:
 527    case GL_TEXTURE_SWIZZLE_G_EXT:
 528    case GL_TEXTURE_SWIZZLE_B_EXT:
 529    case GL_TEXTURE_SWIZZLE_A_EXT:
 530       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 531           || _mesa_is_gles3(ctx)) {
 532          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 533          const GLint swz = comp_to_swizzle(params[0]);
 534          if (swz < 0) {
 535             _mesa_error(ctx, GL_INVALID_ENUM,
 536                         "glTex%sParameter(swizzle 0x%x)", suffix, params[0]);
 537             return GL_FALSE;
 538          }
 539          assert(comp < 4);
 540
 541          flush(ctx);
 542          texObj->Swizzle[comp] = params[0];
 543          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 544          return GL_TRUE;
 545       }
 546       goto invalid_pname;
 547
 548    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 549       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 550           || _mesa_is_gles3(ctx)) {
 551          GLuint comp;
 552          flush(ctx);
 553          for (comp = 0; comp < 4; comp++) {
 554             const GLint swz = comp_to_swizzle(params[comp]);
 555             if (swz >= 0) {
 556                texObj->Swizzle[comp] = params[comp];
 557                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 558             }
 559             else {
 560                _mesa_error(ctx, GL_INVALID_ENUM,
 561                            "glTex%sParameter(swizzle 0x%x)",
 562                            suffix, params[comp]);
 563                return GL_FALSE;
 564             }
 565          }
 566          return GL_TRUE;
 567       }
 568       goto invalid_pname;
 569
 570    case GL_TEXTURE_SRGB_DECODE_EXT:
 571       if (_mesa_is_desktop_gl(ctx)
 572           && ctx->Extensions.EXT_texture_sRGB_decode) {
 573          GLenum decode = params[0];
 574
 575          if (!target_allows_setting_sampler_parameters(texObj->Target))
 576             goto invalid_enum;
 577
 578          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 579             if (texObj->Sampler.sRGBDecode != decode) {
 580                flush(ctx);
 581                texObj->Sampler.sRGBDecode = decode;
 582             }
 583             return GL_TRUE;
 584          }
 585       }
 586       goto invalid_pname;
 587
 588    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 589       if (_mesa_is_desktop_gl(ctx)
 590           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 591          GLenum param = params[0];
 592
 593          if (!target_allows_setting_sampler_parameters(texObj->Target))
 594             goto invalid_enum;
 595
 596          if (param != GL_TRUE && param != GL_FALSE) {
 597             goto invalid_param;
 598          }
 599          if (param != texObj->Sampler.CubeMapSeamless) {
 600             flush(ctx);
 601             texObj->Sampler.CubeMapSeamless = param;
 602          }
 603          return GL_TRUE;
 604       }
 605       goto invalid_pname;
 606
 607    default:
 608       goto invalid_pname;
 609    }
 610
 611 invalid_pname:
 612    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 613                suffix, _mesa_lookup_enum_by_nr(pname));
 614    return GL_FALSE;
 615
 616 invalid_param:
 617    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(param=%s)",
 618                suffix, _mesa_lookup_enum_by_nr(params[0]));
 619    return GL_FALSE;
 620
 621 invalid_operation:
 622    _mesa_error(ctx, GL_INVALID_OPERATION, "glTex%sParameter(pname=%s)",
 623                suffix, _mesa_lookup_enum_by_nr(pname));
 624    return GL_FALSE;
 625
 626 invalid_enum:
 627    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 628                suffix, _mesa_lookup_enum_by_nr(pname));
 629    return GL_FALSE;
 630 }
 631
 632
 633 /**
 634  * Set a float-valued texture parameter
 635  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 636  */
 637 static GLboolean
 638 set_tex_parameterf(struct gl_context *ctx,
 639                    struct gl_texture_object *texObj,
 640                    GLenum pname, const GLfloat *params, bool dsa)
 641 {
 642    const char *suffix = dsa ? "ture" : "";
 643
 644    switch (pname) {
 645    case GL_TEXTURE_MIN_LOD:
 646       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 647          goto invalid_pname;
 648
 649       if (!target_allows_setting_sampler_parameters(texObj->Target))
 650          goto invalid_enum;
 651
 652       if (texObj->Sampler.MinLod == params[0])
 653          return GL_FALSE;
 654       flush(ctx);
 655       texObj->Sampler.MinLod = params[0];
 656       return GL_TRUE;
 657
 658    case GL_TEXTURE_MAX_LOD:
 659       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 660          goto invalid_pname;
 661
 662       if (!target_allows_setting_sampler_parameters(texObj->Target))
 663          goto invalid_enum;
 664
 665       if (texObj->Sampler.MaxLod == params[0])
 666          return GL_FALSE;
 667       flush(ctx);
 668       texObj->Sampler.MaxLod = params[0];
 669       return GL_TRUE;
 670
 671    case GL_TEXTURE_PRIORITY:
 672       if (ctx->API != API_OPENGL_COMPAT)
 673          goto invalid_pname;
 674
 675       flush(ctx);
 676       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 677       return GL_TRUE;
 678
 679    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 680       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 681          if (!target_allows_setting_sampler_parameters(texObj->Target))
 682             goto invalid_enum;
 683
 684          if (texObj->Sampler.MaxAnisotropy == params[0])
 685             return GL_FALSE;
 686          if (params[0] < 1.0) {
 687             _mesa_error(ctx, GL_INVALID_VALUE, "glTex%sParameter(param)",
 688                         suffix);
 689             return GL_FALSE;
 690          }
 691          flush(ctx);
 692          /* clamp to max, that's what NVIDIA does */
 693          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 694                                       ctx->Const.MaxTextureMaxAnisotropy);
 695          return GL_TRUE;
 696       }
 697       else {
 698          static GLuint count = 0;
 699          if (count++ < 10)
 700             goto invalid_pname;
 701       }
 702       return GL_FALSE;
 703
 704    case GL_TEXTURE_LOD_BIAS:
 705       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 706       if (_mesa_is_gles(ctx))
 707          goto invalid_pname;
 708
 709       if (!target_allows_setting_sampler_parameters(texObj->Target))
 710          goto invalid_enum;
 711
 712       if (texObj->Sampler.LodBias != params[0]) {
 713          flush(ctx);
 714          texObj->Sampler.LodBias = params[0];
 715          return GL_TRUE;
 716       }
 717       break;
 718
 719    case GL_TEXTURE_BORDER_COLOR:
 720       if (!_mesa_is_desktop_gl(ctx))
 721          goto invalid_pname;
 722
 723       if (!target_allows_setting_sampler_parameters(texObj->Target))
 724          goto invalid_enum;
 725
 726       flush(ctx);
 727       /* ARB_texture_float disables clamping */
 728       if (ctx->Extensions.ARB_texture_float) {
 729          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 730          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 731          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 732          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 733       } else {
 734          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 735          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 736          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 737          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 738       }
 739       return GL_TRUE;
 740
 741    default:
 742       goto invalid_pname;
 743    }
 744    return GL_FALSE;
 745
 746 invalid_pname:
 747    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 748                suffix, _mesa_lookup_enum_by_nr(pname));
 749    return GL_FALSE;
 750
 751 invalid_enum:
 752    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 753                suffix, _mesa_lookup_enum_by_nr(pname));
 754    return GL_FALSE;
 755 }
 756
 757
 758 void
 759 _mesa_texture_parameterf(struct gl_context *ctx,
 760                          struct gl_texture_object *texObj,
 761                          GLenum pname, GLfloat param, bool dsa)
 762 {
 763    GLboolean need_update;
 764
 765    switch (pname) {
 766    case GL_TEXTURE_MIN_FILTER:
 767    case GL_TEXTURE_MAG_FILTER:
 768    case GL_TEXTURE_WRAP_S:
 769    case GL_TEXTURE_WRAP_T:
 770    case GL_TEXTURE_WRAP_R:
 771    case GL_TEXTURE_BASE_LEVEL:
 772    case GL_TEXTURE_MAX_LEVEL:
 773    case GL_GENERATE_MIPMAP_SGIS:
 774    case GL_TEXTURE_COMPARE_MODE_ARB:
 775    case GL_TEXTURE_COMPARE_FUNC_ARB:
 776    case GL_DEPTH_TEXTURE_MODE_ARB:
 777    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 778    case GL_TEXTURE_SRGB_DECODE_EXT:
 779    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 780    case GL_TEXTURE_SWIZZLE_R_EXT:
 781    case GL_TEXTURE_SWIZZLE_G_EXT:
 782    case GL_TEXTURE_SWIZZLE_B_EXT:
 783    case GL_TEXTURE_SWIZZLE_A_EXT:
 784       {
 785          GLint p[4];
 786          p[0] = (param > 0) ?
 787                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 788                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 789
 790          p[1] = p[2] = p[3] = 0;
 791          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 792       }
 793       break;
 794    case GL_TEXTURE_BORDER_COLOR:
 795    case GL_TEXTURE_SWIZZLE_RGBA:
 796       _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameterf(non-scalar pname)",
 797                   dsa ? "ture" : "");
 798       return;
 799    default:
 800       {
 801          /* this will generate an error if pname is illegal */
 802          GLfloat p[4];
 803          p[0] = param;
 804          p[1] = p[2] = p[3] = 0.0F;
 805          need_update = set_tex_parameterf(ctx, texObj, pname, p, dsa);
 806       }
 807    }
 808
 809    if (ctx->Driver.TexParameter && need_update) {
 810       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 811    }
 812 }
 813
 814
 815 void
 816 _mesa_texture_parameterfv(struct gl_context *ctx,
 817                           struct gl_texture_object *texObj,
 818                           GLenum pname, const GLfloat *params, bool dsa)
 819 {
 820    GLboolean need_update;
 821    switch (pname) {
 822    case GL_TEXTURE_MIN_FILTER:
 823    case GL_TEXTURE_MAG_FILTER:
 824    case GL_TEXTURE_WRAP_S:
 825    case GL_TEXTURE_WRAP_T:
 826    case GL_TEXTURE_WRAP_R:
 827    case GL_TEXTURE_BASE_LEVEL:
 828    case GL_TEXTURE_MAX_LEVEL:
 829    case GL_GENERATE_MIPMAP_SGIS:
 830    case GL_TEXTURE_COMPARE_MODE_ARB:
 831    case GL_TEXTURE_COMPARE_FUNC_ARB:
 832    case GL_DEPTH_TEXTURE_MODE_ARB:
 833    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 834    case GL_TEXTURE_SRGB_DECODE_EXT:
 835    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 836       {
 837          /* convert float param to int */
 838          GLint p[4];
 839          p[0] = (GLint) params[0];
 840          p[1] = p[2] = p[3] = 0;
 841          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 842       }
 843       break;
 844    case GL_TEXTURE_CROP_RECT_OES:
 845       {
 846          /* convert float params to int */
 847          GLint iparams[4];
 848          iparams[0] = (GLint) params[0];
 849          iparams[1] = (GLint) params[1];
 850          iparams[2] = (GLint) params[2];
 851          iparams[3] = (GLint) params[3];
 852          need_update = set_tex_parameteri(ctx, texObj, pname, iparams, dsa);
 853       }
 854       break;
 855    case GL_TEXTURE_SWIZZLE_R_EXT:
 856    case GL_TEXTURE_SWIZZLE_G_EXT:
 857    case GL_TEXTURE_SWIZZLE_B_EXT:
 858    case GL_TEXTURE_SWIZZLE_A_EXT:
 859    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 860       {
 861          GLint p[4] = {0, 0, 0, 0};
 862          p[0] = (GLint) params[0];
 863          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 864             p[1] = (GLint) params[1];
 865             p[2] = (GLint) params[2];
 866             p[3] = (GLint) params[3];
 867          }
 868          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 869       }
 870       break;
 871    default:
 872       /* this will generate an error if pname is illegal */
 873       need_update = set_tex_parameterf(ctx, texObj, pname, params, dsa);
 874    }
 875
 876    if (ctx->Driver.TexParameter && need_update) {
 877       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 878    }
 879 }
 880
 881
 882 void
 883 _mesa_texture_parameteri(struct gl_context *ctx,
 884                          struct gl_texture_object *texObj,
 885                          GLenum pname, GLint param, bool dsa)
 886 {
 887    GLboolean need_update;
 888    switch (pname) {
 889    case GL_TEXTURE_MIN_LOD:
 890    case GL_TEXTURE_MAX_LOD:
 891    case GL_TEXTURE_PRIORITY:
 892    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 893    case GL_TEXTURE_LOD_BIAS:
 894    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 895       {
 896          GLfloat fparam[4];
 897          fparam[0] = (GLfloat) param;
 898          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 899          /* convert int param to float */
 900          need_update = set_tex_parameterf(ctx, texObj, pname, fparam, dsa);
 901       }
 902       break;
 903    case GL_TEXTURE_BORDER_COLOR:
 904    case GL_TEXTURE_SWIZZLE_RGBA:
 905       {
 906          _mesa_error(ctx, GL_INVALID_ENUM,
 907                      "glTex%sParameteri(non-scalar pname)",
 908                      dsa ? "ture" : "");
 909          return;
 910       }
 911    default:
 912       /* this will generate an error if pname is illegal */
 913       {
 914          GLint iparam[4];
 915          iparam[0] = param;
 916          iparam[1] = iparam[2] = iparam[3] = 0;
 917          need_update = set_tex_parameteri(ctx, texObj, pname, iparam, dsa);
 918       }
 919    }
 920
 921    if (ctx->Driver.TexParameter && need_update) {
 922       GLfloat fparam = (GLfloat) param;
 923       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 924    }
 925 }
 926
 927
 928 void
 929 _mesa_texture_parameteriv(struct gl_context *ctx,
 930                           struct gl_texture_object *texObj,
 931                           GLenum pname, const GLint *params, bool dsa)
 932 {
 933    GLboolean need_update;
 934
 935    switch (pname) {
 936    case GL_TEXTURE_BORDER_COLOR:
 937       {
 938          /* convert int params to float */
 939          GLfloat fparams[4];
 940          fparams[0] = INT_TO_FLOAT(params[0]);
 941          fparams[1] = INT_TO_FLOAT(params[1]);
 942          fparams[2] = INT_TO_FLOAT(params[2]);
 943          fparams[3] = INT_TO_FLOAT(params[3]);
 944          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 945       }
 946       break;
 947    case GL_TEXTURE_MIN_LOD:
 948    case GL_TEXTURE_MAX_LOD:
 949    case GL_TEXTURE_PRIORITY:
 950    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 951    case GL_TEXTURE_LOD_BIAS:
 952    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 953       {
 954          /* convert int param to float */
 955          GLfloat fparams[4];
 956          fparams[0] = (GLfloat) params[0];
 957          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 958          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 959       }
 960       break;
 961    default:
 962       /* this will generate an error if pname is illegal */
 963       need_update = set_tex_parameteri(ctx, texObj, pname, params, dsa);
 964    }
 965
 966    if (ctx->Driver.TexParameter && need_update) {
 967       GLfloat fparams[4];
 968       fparams[0] = INT_TO_FLOAT(params[0]);
 969       if (pname == GL_TEXTURE_BORDER_COLOR ||
 970           pname == GL_TEXTURE_CROP_RECT_OES) {
 971          fparams[1] = INT_TO_FLOAT(params[1]);
 972          fparams[2] = INT_TO_FLOAT(params[2]);
 973          fparams[3] = INT_TO_FLOAT(params[3]);
 974       }
 975       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 976    }
 977 }
 978
 979 void
 980 _mesa_texture_parameterIiv(struct gl_context *ctx,
 981                            struct gl_texture_object *texObj,
 982                            GLenum pname, const GLint *params, bool dsa)
 983 {
 984    switch (pname) {
 985    case GL_TEXTURE_BORDER_COLOR:
 986       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 987       /* set the integer-valued border color */
 988       COPY_4V(texObj->Sampler.BorderColor.i, params);
 989       break;
 990    default:
 991       _mesa_texture_parameteriv(ctx, texObj, pname, params, dsa);
 992       break;
 993    }
 994    /* XXX no driver hook for TexParameterIiv() yet */
 995 }
 996
 997 void
 998 _mesa_texture_parameterIuiv(struct gl_context *ctx,
 999                             struct gl_texture_object *texObj,
1000                             GLenum pname, const GLuint *params, bool dsa)
1001 {
1002    switch (pname) {
1003    case GL_TEXTURE_BORDER_COLOR:
1004       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1005       /* set the unsigned integer-valued border color */
1006       COPY_4V(texObj->Sampler.BorderColor.ui, params);
1007       break;
1008    default:
1009       _mesa_texture_parameteriv(ctx, texObj, pname, (const GLint *) params,
1010                                 dsa);
1011       break;
1012    }
1013    /* XXX no driver hook for TexParameterIuiv() yet */
1014 }
1015
1016 void GLAPIENTRY
1017 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
1018 {
1019    struct gl_texture_object *texObj;
1020    GET_CURRENT_CONTEXT(ctx);
1021
1022    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1023    if (!texObj)
1024       return;
1025
1026    _mesa_texture_parameterf(ctx, texObj, pname, param, false);
1027 }
1028
1029 void GLAPIENTRY
1030 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
1031 {
1032    struct gl_texture_object *texObj;
1033    GET_CURRENT_CONTEXT(ctx);
1034
1035    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1036    if (!texObj)
1037       return;
1038
1039    _mesa_texture_parameterfv(ctx, texObj, pname, params, false);
1040 }
1041
1042 void GLAPIENTRY
1043 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
1044 {
1045    struct gl_texture_object *texObj;
1046    GET_CURRENT_CONTEXT(ctx);
1047
1048    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1049    if (!texObj)
1050       return;
1051
1052    _mesa_texture_parameteri(ctx, texObj, pname, param, false);
1053 }
1054
1055 void GLAPIENTRY
1056 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
1057 {
1058    struct gl_texture_object *texObj;
1059    GET_CURRENT_CONTEXT(ctx);
1060
1061    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1062    if (!texObj)
1063       return;
1064
1065    _mesa_texture_parameteriv(ctx, texObj, pname, params, false);
1066 }
1067
1068 /**
1069  * Set tex parameter to integer value(s).  Primarily intended to set
1070  * integer-valued texture border color (for integer-valued textures).
1071  * New in GL 3.0.
1072  */
1073 void GLAPIENTRY
1074 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
1075 {
1076    struct gl_texture_object *texObj;
1077    GET_CURRENT_CONTEXT(ctx);
1078
1079    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1080    if (!texObj)
1081       return;
1082
1083    _mesa_texture_parameterIiv(ctx, texObj, pname, params, false);
1084 }
1085
1086 /**
1087  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
1088  * uint-valued texture border color (for integer-valued textures).
1089  * New in GL 3.0
1090  */
1091 void GLAPIENTRY
1092 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
1093 {
1094    struct gl_texture_object *texObj;
1095    GET_CURRENT_CONTEXT(ctx);
1096
1097    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1098    if (!texObj)
1099       return;
1100
1101    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, false);
1102 }
1103
1104
1105 void GLAPIENTRY
1106 _mesa_TextureParameterfv(GLuint texture, GLenum pname, const GLfloat *params)
1107 {
1108    struct gl_texture_object *texObj;
1109    GET_CURRENT_CONTEXT(ctx);
1110
1111    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1112    if (!texObj) {
1113       /* User passed a non-generated name. */
1114       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterfv(texture)");
1115       return;
1116    }
1117
1118    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1119 }
1120
1121 void GLAPIENTRY
1122 _mesa_TextureParameterf(GLuint texture, GLenum pname, GLfloat param)
1123 {
1124    struct gl_texture_object *texObj;
1125    GET_CURRENT_CONTEXT(ctx);
1126
1127    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1128    if (!texObj) {
1129       /* User passed a non-generated name. */
1130       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterf(texture)");
1131       return;
1132    }
1133
1134    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1135 }
1136
1137 void GLAPIENTRY
1138 _mesa_TextureParameteri(GLuint texture, GLenum pname, GLint param)
1139 {
1140    struct gl_texture_object *texObj;
1141    GET_CURRENT_CONTEXT(ctx);
1142
1143    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1144    if (!texObj) {
1145       /* User passed a non-generated name. */
1146       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteri(texture)");
1147       return;
1148    }
1149
1150    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1151 }
1152
1153 void GLAPIENTRY
1154 _mesa_TextureParameteriv(GLuint texture, GLenum pname,
1155                          const GLint *params)
1156 {
1157    struct gl_texture_object *texObj;
1158    GET_CURRENT_CONTEXT(ctx);
1159
1160    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1161    if (!texObj) {
1162       /* User passed a non-generated name. */
1163       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteriv(texture)");
1164       return;
1165    }
1166
1167    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1168 }
1169
1170
1171 void GLAPIENTRY
1172 _mesa_TextureParameterIiv(GLuint texture, GLenum pname, const GLint *params)
1173 {
1174    struct gl_texture_object *texObj;
1175    GET_CURRENT_CONTEXT(ctx);
1176
1177    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1178    if (!texObj) {
1179       /* User passed a non-generated name. */
1180       _mesa_error(ctx, GL_INVALID_OPERATION,
1181                   "glTextureParameterIiv(texture)");
1182       return;
1183    }
1184
1185    _mesa_texture_parameterIiv(ctx, texObj, pname, params, true);
1186 }
1187
1188 void GLAPIENTRY
1189 _mesa_TextureParameterIuiv(GLuint texture, GLenum pname, const GLuint *params)
1190 {
1191    struct gl_texture_object *texObj;
1192    GET_CURRENT_CONTEXT(ctx);
1193
1194    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1195    if (!texObj) {
1196       /* User passed a non-generated name. */
1197       _mesa_error(ctx, GL_INVALID_OPERATION,
1198                   "glTextureParameterIuiv(texture)");
1199       return;
1200    }
1201
1202    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, true);
1203 }
1204
1205 static GLboolean
1206 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target,
1207                                      bool dsa)
1208 {
1209    switch (target) {
1210    case GL_TEXTURE_1D:
1211    case GL_PROXY_TEXTURE_1D:
1212    case GL_TEXTURE_2D:
1213    case GL_PROXY_TEXTURE_2D:
1214    case GL_TEXTURE_3D:
1215    case GL_PROXY_TEXTURE_3D:
1216       return GL_TRUE;
1217    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
1218    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1219    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1220    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1221    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1222    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1223    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1224       return ctx->Extensions.ARB_texture_cube_map;
1225    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1226    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1227       return ctx->Extensions.ARB_texture_cube_map_array;
1228    case GL_TEXTURE_RECTANGLE_NV:
1229    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1230       return ctx->Extensions.NV_texture_rectangle;
1231    case GL_TEXTURE_1D_ARRAY_EXT:
1232    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1233    case GL_TEXTURE_2D_ARRAY_EXT:
1234    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1235       return ctx->Extensions.EXT_texture_array;
1236    case GL_TEXTURE_BUFFER:
1237       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1238        * but not in earlier versions that expose ARB_texture_buffer_object.
1239        *
1240        * From the ARB_texture_buffer_object spec:
1241        * "(7) Do buffer textures support texture parameters (TexParameter) or
1242        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1243        *
1244        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1245        *    explicit error language for any of these cases.  That is because
1246        *    each of the functions enumerate the set of valid <target>
1247        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1248        *    these cases means that target is not legal, and an INVALID_ENUM
1249        *    error should be generated."
1250        *
1251        * From the OpenGL 3.1 spec:
1252        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1253        */
1254       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1255    case GL_TEXTURE_2D_MULTISAMPLE:
1256    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1257    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1258    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1259       return ctx->Extensions.ARB_texture_multisample;
1260
1261    /*  This is a valid target for dsa, but the OpenGL 4.5 core spec
1262     *  (30.10.2014) Section 8.11 Texture Queries says:
1263     *       "For GetTextureLevelParameter* only, texture may also be a cube
1264     *       map texture object.  In this case the query is always performed
1265     *       for face zero (the TEXTURE_CUBE_MAP_POSITIVE_X face), since there
1266     *       is no way to specify another face."
1267     */
1268    case GL_TEXTURE_CUBE_MAP:
1269       return dsa;
1270    default:
1271       return GL_FALSE;
1272    }
1273 }
1274
1275
1276 static void
1277 get_tex_level_parameter_image(struct gl_context *ctx,
1278                               const struct gl_texture_object *texObj,
1279                               GLenum target, GLint level,
1280                               GLenum pname, GLint *params,
1281                               bool dsa)
1282 {
1283    const struct gl_texture_image *img = NULL;
1284    struct gl_texture_image dummy_image;
1285    mesa_format texFormat;
1286    const char *suffix = dsa ? "ture" : "";
1287
1288    img = _mesa_select_tex_image(texObj, target, level);
1289    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1290       /* In case of undefined texture image return the default values.
1291        *
1292        * From OpenGL 4.0 spec, page 398:
1293        *    "The initial internal format of a texel array is RGBA
1294        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1295        *     use TEXTURE_INTERNAL_FORMAT."
1296        */
1297       memset(&dummy_image, 0, sizeof(dummy_image));
1298       dummy_image.TexFormat = MESA_FORMAT_NONE;
1299       dummy_image.InternalFormat = GL_RGBA;
1300       dummy_image._BaseFormat = GL_NONE;
1301
1302       img = &dummy_image;
1303    }
1304
1305    texFormat = img->TexFormat;
1306
1307    switch (pname) {
1308       case GL_TEXTURE_WIDTH:
1309          *params = img->Width;
1310          break;
1311       case GL_TEXTURE_HEIGHT:
1312          *params = img->Height;
1313          break;
1314       case GL_TEXTURE_DEPTH:
1315          *params = img->Depth;
1316          break;
1317       case GL_TEXTURE_INTERNAL_FORMAT:
1318          if (_mesa_is_format_compressed(texFormat)) {
1319             /* need to return the actual compressed format */
1320             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1321          }
1322          else {
1323             /* If the true internal format is not compressed but the user
1324              * requested a generic compressed format, we have to return the
1325              * generic base format that matches.
1326              *
1327              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1328              *
1329              *     "If no specific compressed format is available,
1330              *     internalformat is instead replaced by the corresponding base
1331              *     internal format."
1332              *
1333              * Otherwise just return the user's requested internal format
1334              */
1335             const GLenum f =
1336                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1337
1338             *params = (f != 0) ? f : img->InternalFormat;
1339          }
1340          break;
1341       case GL_TEXTURE_BORDER:
1342          if (ctx->API != API_OPENGL_COMPAT)
1343             goto invalid_pname;
1344          *params = img->Border;
1345          break;
1346       case GL_TEXTURE_RED_SIZE:
1347       case GL_TEXTURE_GREEN_SIZE:
1348       case GL_TEXTURE_BLUE_SIZE:
1349       case GL_TEXTURE_ALPHA_SIZE:
1350          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1351             *params = _mesa_get_format_bits(texFormat, pname);
1352          else
1353             *params = 0;
1354          break;
1355       case GL_TEXTURE_INTENSITY_SIZE:
1356       case GL_TEXTURE_LUMINANCE_SIZE:
1357          if (ctx->API != API_OPENGL_COMPAT)
1358             goto invalid_pname;
1359          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1360             *params = _mesa_get_format_bits(texFormat, pname);
1361             if (*params == 0) {
1362                /* intensity or luminance is probably stored as RGB[A] */
1363                *params = MIN2(_mesa_get_format_bits(texFormat,
1364                                                     GL_TEXTURE_RED_SIZE),
1365                               _mesa_get_format_bits(texFormat,
1366                                                     GL_TEXTURE_GREEN_SIZE));
1367             }
1368          }
1369          else {
1370             *params = 0;
1371          }
1372          break;
1373       case GL_TEXTURE_DEPTH_SIZE_ARB:
1374          if (!ctx->Extensions.ARB_depth_texture)
1375             goto invalid_pname;
1376          *params = _mesa_get_format_bits(texFormat, pname);
1377          break;
1378       case GL_TEXTURE_STENCIL_SIZE:
1379          *params = _mesa_get_format_bits(texFormat, pname);
1380          break;
1381       case GL_TEXTURE_SHARED_SIZE:
1382          if (ctx->Version < 30 &&
1383              !ctx->Extensions.EXT_texture_shared_exponent)
1384             goto invalid_pname;
1385          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1386          break;
1387
1388       /* GL_ARB_texture_compression */
1389       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1390          if (_mesa_is_format_compressed(texFormat) &&
1391              !_mesa_is_proxy_texture(target)) {
1392             *params = _mesa_format_image_size(texFormat, img->Width,
1393                                               img->Height, img->Depth);
1394     }
1395     else {
1396        _mesa_error(ctx, GL_INVALID_OPERATION,
1397                    "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1398                    _mesa_lookup_enum_by_nr(pname));
1399     }
1400          break;
1401       case GL_TEXTURE_COMPRESSED:
1402          *params = (GLint) _mesa_is_format_compressed(texFormat);
1403          break;
1404
1405       /* GL_ARB_texture_float */
1406       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1407       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1408          if (ctx->API != API_OPENGL_COMPAT)
1409             goto invalid_pname;
1410          /* FALLTHROUGH */
1411       case GL_TEXTURE_RED_TYPE_ARB:
1412       case GL_TEXTURE_GREEN_TYPE_ARB:
1413       case GL_TEXTURE_BLUE_TYPE_ARB:
1414       case GL_TEXTURE_ALPHA_TYPE_ARB:
1415       case GL_TEXTURE_DEPTH_TYPE_ARB:
1416          if (!ctx->Extensions.ARB_texture_float)
1417             goto invalid_pname;
1418          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1419             *params = _mesa_get_format_datatype(texFormat);
1420          else
1421             *params = GL_NONE;
1422          break;
1423
1424       /* GL_ARB_texture_multisample */
1425       case GL_TEXTURE_SAMPLES:
1426          if (!ctx->Extensions.ARB_texture_multisample)
1427             goto invalid_pname;
1428          *params = img->NumSamples;
1429          break;
1430
1431       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1432          if (!ctx->Extensions.ARB_texture_multisample)
1433             goto invalid_pname;
1434          *params = img->FixedSampleLocations;
1435          break;
1436
1437       default:
1438          goto invalid_pname;
1439    }
1440
1441    /* no error if we get here */
1442    return;
1443
1444 invalid_pname:
1445    _mesa_error(ctx, GL_INVALID_ENUM,
1446                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1447                _mesa_lookup_enum_by_nr(pname));
1448 }
1449
1450
1451 static void
1452 get_tex_level_parameter_buffer(struct gl_context *ctx,
1453                                const struct gl_texture_object *texObj,
1454                                GLenum pname, GLint *params, bool dsa)
1455 {
1456    const struct gl_buffer_object *bo = texObj->BufferObject;
1457    mesa_format texFormat = texObj->_BufferObjectFormat;
1458    GLenum internalFormat = texObj->BufferObjectFormat;
1459    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1460    const char *suffix = dsa ? "ture" : "";
1461
1462    if (!bo) {
1463       /* undefined texture buffer object */
1464       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1465       return;
1466    }
1467
1468    switch (pname) {
1469       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1470          *params = bo->Name;
1471          break;
1472       case GL_TEXTURE_WIDTH:
1473          *params = bo->Size;
1474          break;
1475       case GL_TEXTURE_HEIGHT:
1476       case GL_TEXTURE_DEPTH:
1477       case GL_TEXTURE_BORDER:
1478       case GL_TEXTURE_SHARED_SIZE:
1479       case GL_TEXTURE_COMPRESSED:
1480          *params = 0;
1481          break;
1482       case GL_TEXTURE_INTERNAL_FORMAT:
1483          *params = internalFormat;
1484          break;
1485       case GL_TEXTURE_RED_SIZE:
1486       case GL_TEXTURE_GREEN_SIZE:
1487       case GL_TEXTURE_BLUE_SIZE:
1488       case GL_TEXTURE_ALPHA_SIZE:
1489          if (_mesa_base_format_has_channel(baseFormat, pname))
1490             *params = _mesa_get_format_bits(texFormat, pname);
1491          else
1492             *params = 0;
1493          break;
1494       case GL_TEXTURE_INTENSITY_SIZE:
1495       case GL_TEXTURE_LUMINANCE_SIZE:
1496          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1497             *params = _mesa_get_format_bits(texFormat, pname);
1498             if (*params == 0) {
1499                /* intensity or luminance is probably stored as RGB[A] */
1500                *params = MIN2(_mesa_get_format_bits(texFormat,
1501                                                     GL_TEXTURE_RED_SIZE),
1502                               _mesa_get_format_bits(texFormat,
1503                                                     GL_TEXTURE_GREEN_SIZE));
1504             }
1505          } else {
1506             *params = 0;
1507          }
1508          break;
1509       case GL_TEXTURE_DEPTH_SIZE_ARB:
1510       case GL_TEXTURE_STENCIL_SIZE_EXT:
1511          *params = _mesa_get_format_bits(texFormat, pname);
1512          break;
1513
1514       /* GL_ARB_texture_buffer_range */
1515       case GL_TEXTURE_BUFFER_OFFSET:
1516          if (!ctx->Extensions.ARB_texture_buffer_range)
1517             goto invalid_pname;
1518          *params = texObj->BufferOffset;
1519          break;
1520       case GL_TEXTURE_BUFFER_SIZE:
1521          if (!ctx->Extensions.ARB_texture_buffer_range)
1522             goto invalid_pname;
1523          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1524          break;
1525
1526       /* GL_ARB_texture_compression */
1527       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1528          /* Always illegal for GL_TEXTURE_BUFFER */
1529          _mesa_error(ctx, GL_INVALID_OPERATION,
1530                      "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1531                      _mesa_lookup_enum_by_nr(pname));
1532          break;
1533
1534       /* GL_ARB_texture_float */
1535       case GL_TEXTURE_RED_TYPE_ARB:
1536       case GL_TEXTURE_GREEN_TYPE_ARB:
1537       case GL_TEXTURE_BLUE_TYPE_ARB:
1538       case GL_TEXTURE_ALPHA_TYPE_ARB:
1539       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1540       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1541       case GL_TEXTURE_DEPTH_TYPE_ARB:
1542          if (!ctx->Extensions.ARB_texture_float)
1543             goto invalid_pname;
1544          if (_mesa_base_format_has_channel(baseFormat, pname))
1545             *params = _mesa_get_format_datatype(texFormat);
1546          else
1547             *params = GL_NONE;
1548          break;
1549
1550       default:
1551          goto invalid_pname;
1552    }
1553
1554    /* no error if we get here */
1555    return;
1556
1557 invalid_pname:
1558    _mesa_error(ctx, GL_INVALID_ENUM,
1559                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1560                _mesa_lookup_enum_by_nr(pname));
1561 }
1562
1563
1564 /**
1565  * This isn't exposed to the rest of the driver because it is a part of the
1566  * OpenGL API that is rarely used.
1567  */
1568 static void
1569 get_tex_level_parameteriv(struct gl_context *ctx,
1570                           struct gl_texture_object *texObj,
1571                           GLenum target, GLint level,
1572                           GLenum pname, GLint *params,
1573                           bool dsa)
1574 {
1575    GLint maxLevels;
1576    const char *suffix = dsa ? "ture" : "";
1577
1578    /* Check for errors */
1579    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1580       _mesa_error(ctx, GL_INVALID_OPERATION,
1581                   "glGetTex%sLevelParameter[if]v("
1582                   "current unit >= max combined texture units)", suffix);
1583       return;
1584    }
1585
1586    if (!legal_get_tex_level_parameter_target(ctx, target, dsa)) {
1587       _mesa_error(ctx, GL_INVALID_ENUM,
1588                   "glGetTex%sLevelParameter[if]v(target=%s)", suffix,
1589                   _mesa_lookup_enum_by_nr(target));
1590       return;
1591    }
1592
1593    maxLevels = _mesa_max_texture_levels(ctx, target);
1594    assert(maxLevels != 0);
1595
1596    if (level < 0 || level >= maxLevels) {
1597       _mesa_error(ctx, GL_INVALID_VALUE,
1598                   "glGetTex%sLevelParameter[if]v(level out of range)", suffix);
1599       return;
1600    }
1601
1602    /* Get the level parameter */
1603    if (target == GL_TEXTURE_BUFFER) {
1604       get_tex_level_parameter_buffer(ctx, texObj, pname, params, dsa);
1605    }
1606    else {
1607       get_tex_level_parameter_image(ctx, texObj, target,
1608                                     level, pname, params, dsa);
1609    }
1610 }
1611
1612 void GLAPIENTRY
1613 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1614                               GLenum pname, GLfloat *params )
1615 {
1616    struct gl_texture_object *texObj;
1617    GLint iparam;
1618    GET_CURRENT_CONTEXT(ctx);
1619
1620    texObj = _mesa_get_current_tex_object(ctx, target);
1621    if (!texObj)
1622       return;
1623
1624    get_tex_level_parameteriv(ctx, texObj, target, level,
1625                              pname, &iparam, false);
1626
1627    *params = (GLfloat) iparam;
1628 }
1629
1630 void GLAPIENTRY
1631 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1632                               GLenum pname, GLint *params )
1633 {
1634    struct gl_texture_object *texObj;
1635    GET_CURRENT_CONTEXT(ctx);
1636
1637    texObj = _mesa_get_current_tex_object(ctx, target);
1638    if (!texObj)
1639       return;
1640
1641    get_tex_level_parameteriv(ctx, texObj, target, level,
1642                              pname, params, false);
1643 }
1644
1645 void GLAPIENTRY
1646 _mesa_GetTextureLevelParameterfv(GLuint texture, GLint level,
1647                                  GLenum pname, GLfloat *params)
1648 {
1649    struct gl_texture_object *texObj;
1650    GLint iparam;
1651    GET_CURRENT_CONTEXT(ctx);
1652
1653    texObj = _mesa_lookup_texture_err(ctx, texture,
1654                                      "glGetTextureLevelParameterfv");
1655    if (!texObj)
1656       return;
1657
1658    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1659                              pname, &iparam, true);
1660
1661    *params = (GLfloat) iparam;
1662 }
1663
1664 void GLAPIENTRY
1665 _mesa_GetTextureLevelParameteriv(GLuint texture, GLint level,
1666                                  GLenum pname, GLint *params)
1667 {
1668    struct gl_texture_object *texObj;
1669    GET_CURRENT_CONTEXT(ctx);
1670
1671    texObj = _mesa_lookup_texture_err(ctx, texture,
1672                                      "glGetTextureLevelParameteriv");
1673    if (!texObj)
1674       return;
1675
1676    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1677                              pname, params, true);
1678 }
1679
1680 /**
1681  * This isn't exposed to the rest of the driver because it is a part of the
1682  * OpenGL API that is rarely used.
1683  */
1684 static void
1685 get_tex_parameterfv(struct gl_context *ctx,
1686                     struct gl_texture_object *obj,
1687                     GLenum pname, GLfloat *params, bool dsa)
1688 {
1689    _mesa_lock_context_textures(ctx);
1690    switch (pname) {
1691       case GL_TEXTURE_MAG_FILTER:
1692          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1693          break;
1694       case GL_TEXTURE_MIN_FILTER:
1695          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1696          break;
1697       case GL_TEXTURE_WRAP_S:
1698          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1699          break;
1700       case GL_TEXTURE_WRAP_T:
1701          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1702          break;
1703       case GL_TEXTURE_WRAP_R:
1704          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1705          break;
1706       case GL_TEXTURE_BORDER_COLOR:
1707          if (!_mesa_is_desktop_gl(ctx))
1708             goto invalid_pname;
1709
1710          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1711             _mesa_update_state_locked(ctx);
1712          if (_mesa_get_clamp_fragment_color(ctx)) {
1713             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1714             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1715             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1716             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1717          }
1718          else {
1719             params[0] = obj->Sampler.BorderColor.f[0];
1720             params[1] = obj->Sampler.BorderColor.f[1];
1721             params[2] = obj->Sampler.BorderColor.f[2];
1722             params[3] = obj->Sampler.BorderColor.f[3];
1723          }
1724          break;
1725       case GL_TEXTURE_RESIDENT:
1726          if (ctx->API != API_OPENGL_COMPAT)
1727             goto invalid_pname;
1728
1729          *params = 1.0F;
1730          break;
1731       case GL_TEXTURE_PRIORITY:
1732          if (ctx->API != API_OPENGL_COMPAT)
1733             goto invalid_pname;
1734
1735          *params = obj->Priority;
1736          break;
1737       case GL_TEXTURE_MIN_LOD:
1738          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1739             goto invalid_pname;
1740
1741          *params = obj->Sampler.MinLod;
1742          break;
1743       case GL_TEXTURE_MAX_LOD:
1744          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1745             goto invalid_pname;
1746
1747          *params = obj->Sampler.MaxLod;
1748          break;
1749       case GL_TEXTURE_BASE_LEVEL:
1750          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1751             goto invalid_pname;
1752
1753          *params = (GLfloat) obj->BaseLevel;
1754          break;
1755       case GL_TEXTURE_MAX_LEVEL:
1756          *params = (GLfloat) obj->MaxLevel;
1757          break;
1758       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1759          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1760             goto invalid_pname;
1761          *params = obj->Sampler.MaxAnisotropy;
1762          break;
1763       case GL_GENERATE_MIPMAP_SGIS:
1764          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1765             goto invalid_pname;
1766
1767          *params = (GLfloat) obj->GenerateMipmap;
1768          break;
1769       case GL_TEXTURE_COMPARE_MODE_ARB:
1770          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1771              && !_mesa_is_gles3(ctx))
1772             goto invalid_pname;
1773          *params = (GLfloat) obj->Sampler.CompareMode;
1774          break;
1775       case GL_TEXTURE_COMPARE_FUNC_ARB:
1776          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1777              && !_mesa_is_gles3(ctx))
1778             goto invalid_pname;
1779          *params = (GLfloat) obj->Sampler.CompareFunc;
1780          break;
1781       case GL_DEPTH_TEXTURE_MODE_ARB:
1782          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1783           * never existed in OpenGL ES.
1784           */
1785          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1786             goto invalid_pname;
1787          *params = (GLfloat) obj->DepthMode;
1788          break;
1789       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1790          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
1791             goto invalid_pname;
1792          *params = (GLfloat)
1793             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1794          break;
1795       case GL_TEXTURE_LOD_BIAS:
1796          if (_mesa_is_gles(ctx))
1797             goto invalid_pname;
1798
1799          *params = obj->Sampler.LodBias;
1800          break;
1801       case GL_TEXTURE_CROP_RECT_OES:
1802          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1803             goto invalid_pname;
1804
1805          params[0] = (GLfloat) obj->CropRect[0];
1806          params[1] = (GLfloat) obj->CropRect[1];
1807          params[2] = (GLfloat) obj->CropRect[2];
1808          params[3] = (GLfloat) obj->CropRect[3];
1809          break;
1810
1811       case GL_TEXTURE_SWIZZLE_R_EXT:
1812       case GL_TEXTURE_SWIZZLE_G_EXT:
1813       case GL_TEXTURE_SWIZZLE_B_EXT:
1814       case GL_TEXTURE_SWIZZLE_A_EXT:
1815          if ((!_mesa_is_desktop_gl(ctx)
1816               || !ctx->Extensions.EXT_texture_swizzle)
1817              && !_mesa_is_gles3(ctx))
1818             goto invalid_pname;
1819          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1820          break;
1821
1822       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1823          if ((!_mesa_is_desktop_gl(ctx)
1824               || !ctx->Extensions.EXT_texture_swizzle)
1825              && !_mesa_is_gles3(ctx)) {
1826             goto invalid_pname;
1827          }
1828          else {
1829             GLuint comp;
1830             for (comp = 0; comp < 4; comp++) {
1831                params[comp] = (GLfloat) obj->Swizzle[comp];
1832             }
1833          }
1834          break;
1835
1836       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1837          if (!_mesa_is_desktop_gl(ctx)
1838              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1839             goto invalid_pname;
1840          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1841          break;
1842
1843       case GL_TEXTURE_IMMUTABLE_FORMAT:
1844          *params = (GLfloat) obj->Immutable;
1845          break;
1846
1847       case GL_TEXTURE_IMMUTABLE_LEVELS:
1848          if (_mesa_is_gles3(ctx) ||
1849              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1850             *params = (GLfloat) obj->ImmutableLevels;
1851          else
1852             goto invalid_pname;
1853          break;
1854
1855       case GL_TEXTURE_VIEW_MIN_LEVEL:
1856          if (!ctx->Extensions.ARB_texture_view)
1857             goto invalid_pname;
1858          *params = (GLfloat) obj->MinLevel;
1859          break;
1860
1861       case GL_TEXTURE_VIEW_NUM_LEVELS:
1862          if (!ctx->Extensions.ARB_texture_view)
1863             goto invalid_pname;
1864          *params = (GLfloat) obj->NumLevels;
1865          break;
1866
1867       case GL_TEXTURE_VIEW_MIN_LAYER:
1868          if (!ctx->Extensions.ARB_texture_view)
1869             goto invalid_pname;
1870          *params = (GLfloat) obj->MinLayer;
1871          break;
1872
1873       case GL_TEXTURE_VIEW_NUM_LAYERS:
1874          if (!ctx->Extensions.ARB_texture_view)
1875             goto invalid_pname;
1876          *params = (GLfloat) obj->NumLayers;
1877          break;
1878
1879       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1880          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1881             goto invalid_pname;
1882          *params = (GLfloat) obj->RequiredTextureImageUnits;
1883          break;
1884
1885       case GL_TEXTURE_SRGB_DECODE_EXT:
1886          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1887             goto invalid_pname;
1888          *params = (GLfloat) obj->Sampler.sRGBDecode;
1889          break;
1890
1891       default:
1892          goto invalid_pname;
1893    }
1894
1895    /* no error if we get here */
1896    _mesa_unlock_context_textures(ctx);
1897    return;
1898
1899 invalid_pname:
1900    _mesa_unlock_context_textures(ctx);
1901    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameterfv(pname=0x%x)",
1902                dsa ? "ture" : "", pname);
1903 }
1904
1905
1906 static void
1907 get_tex_parameteriv(struct gl_context *ctx,
1908                     struct gl_texture_object *obj,
1909                     GLenum pname, GLint *params, bool dsa)
1910 {
1911    _mesa_lock_texture(ctx, obj);
1912    switch (pname) {
1913       case GL_TEXTURE_MAG_FILTER:
1914          *params = (GLint) obj->Sampler.MagFilter;
1915          break;
1916       case GL_TEXTURE_MIN_FILTER:
1917          *params = (GLint) obj->Sampler.MinFilter;
1918          break;
1919       case GL_TEXTURE_WRAP_S:
1920          *params = (GLint) obj->Sampler.WrapS;
1921          break;
1922       case GL_TEXTURE_WRAP_T:
1923          *params = (GLint) obj->Sampler.WrapT;
1924          break;
1925       case GL_TEXTURE_WRAP_R:
1926          *params = (GLint) obj->Sampler.WrapR;
1927          break;
1928       case GL_TEXTURE_BORDER_COLOR:
1929          if (!_mesa_is_desktop_gl(ctx))
1930             goto invalid_pname;
1931
1932          {
1933             GLfloat b[4];
1934             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1935             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1936             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1937             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1938             params[0] = FLOAT_TO_INT(b[0]);
1939             params[1] = FLOAT_TO_INT(b[1]);
1940             params[2] = FLOAT_TO_INT(b[2]);
1941             params[3] = FLOAT_TO_INT(b[3]);
1942          }
1943          break;
1944       case GL_TEXTURE_RESIDENT:
1945          if (ctx->API != API_OPENGL_COMPAT)
1946             goto invalid_pname;
1947
1948          *params = 1;
1949          break;
1950       case GL_TEXTURE_PRIORITY:
1951          if (ctx->API != API_OPENGL_COMPAT)
1952             goto invalid_pname;
1953
1954          *params = FLOAT_TO_INT(obj->Priority);
1955          break;
1956       case GL_TEXTURE_MIN_LOD:
1957          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1958             goto invalid_pname;
1959          /* GL spec 'Data Conversions' section specifies that floating-point
1960           * value in integer Get function is rounded to nearest integer
1961           */
1962          *params = IROUND(obj->Sampler.MinLod);
1963          break;
1964       case GL_TEXTURE_MAX_LOD:
1965          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1966             goto invalid_pname;
1967          /* GL spec 'Data Conversions' section specifies that floating-point
1968           * value in integer Get function is rounded to nearest integer
1969           */
1970          *params = IROUND(obj->Sampler.MaxLod);
1971          break;
1972       case GL_TEXTURE_BASE_LEVEL:
1973          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1974             goto invalid_pname;
1975
1976          *params = obj->BaseLevel;
1977          break;
1978       case GL_TEXTURE_MAX_LEVEL:
1979          *params = obj->MaxLevel;
1980          break;
1981       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1982          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1983             goto invalid_pname;
1984          /* GL spec 'Data Conversions' section specifies that floating-point
1985           * value in integer Get function is rounded to nearest integer
1986           */
1987          *params = IROUND(obj->Sampler.MaxAnisotropy);
1988          break;
1989       case GL_GENERATE_MIPMAP_SGIS:
1990          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1991             goto invalid_pname;
1992
1993          *params = (GLint) obj->GenerateMipmap;
1994          break;
1995       case GL_TEXTURE_COMPARE_MODE_ARB:
1996          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1997              && !_mesa_is_gles3(ctx))
1998             goto invalid_pname;
1999          *params = (GLint) obj->Sampler.CompareMode;
2000          break;
2001       case GL_TEXTURE_COMPARE_FUNC_ARB:
2002          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2003              && !_mesa_is_gles3(ctx))
2004             goto invalid_pname;
2005          *params = (GLint) obj->Sampler.CompareFunc;
2006          break;
2007       case GL_DEPTH_TEXTURE_MODE_ARB:
2008          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2009             goto invalid_pname;
2010          *params = (GLint) obj->DepthMode;
2011          break;
2012       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2013          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
2014             goto invalid_pname;
2015          *params = (GLint)
2016             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2017          break;
2018       case GL_TEXTURE_LOD_BIAS:
2019          if (_mesa_is_gles(ctx))
2020             goto invalid_pname;
2021
2022          /* GL spec 'Data Conversions' section specifies that floating-point
2023           * value in integer Get function is rounded to nearest integer
2024           */
2025          *params = IROUND(obj->Sampler.LodBias);
2026          break;
2027       case GL_TEXTURE_CROP_RECT_OES:
2028          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2029             goto invalid_pname;
2030
2031          params[0] = obj->CropRect[0];
2032          params[1] = obj->CropRect[1];
2033          params[2] = obj->CropRect[2];
2034          params[3] = obj->CropRect[3];
2035          break;
2036       case GL_TEXTURE_SWIZZLE_R_EXT:
2037       case GL_TEXTURE_SWIZZLE_G_EXT:
2038       case GL_TEXTURE_SWIZZLE_B_EXT:
2039       case GL_TEXTURE_SWIZZLE_A_EXT:
2040          if ((!_mesa_is_desktop_gl(ctx)
2041               || !ctx->Extensions.EXT_texture_swizzle)
2042              && !_mesa_is_gles3(ctx))
2043             goto invalid_pname;
2044          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2045          break;
2046
2047       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2048          if ((!_mesa_is_desktop_gl(ctx)
2049               || !ctx->Extensions.EXT_texture_swizzle)
2050              && !_mesa_is_gles3(ctx))
2051             goto invalid_pname;
2052          COPY_4V(params, obj->Swizzle);
2053          break;
2054
2055       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2056          if (!_mesa_is_desktop_gl(ctx)
2057              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2058             goto invalid_pname;
2059          *params = (GLint) obj->Sampler.CubeMapSeamless;
2060          break;
2061
2062       case GL_TEXTURE_IMMUTABLE_FORMAT:
2063          *params = (GLint) obj->Immutable;
2064          break;
2065
2066       case GL_TEXTURE_IMMUTABLE_LEVELS:
2067          if (_mesa_is_gles3(ctx) ||
2068              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
2069             *params = obj->ImmutableLevels;
2070          else
2071             goto invalid_pname;
2072          break;
2073
2074       case GL_TEXTURE_VIEW_MIN_LEVEL:
2075          if (!ctx->Extensions.ARB_texture_view)
2076             goto invalid_pname;
2077          *params = (GLint) obj->MinLevel;
2078          break;
2079
2080       case GL_TEXTURE_VIEW_NUM_LEVELS:
2081          if (!ctx->Extensions.ARB_texture_view)
2082             goto invalid_pname;
2083          *params = (GLint) obj->NumLevels;
2084          break;
2085
2086       case GL_TEXTURE_VIEW_MIN_LAYER:
2087          if (!ctx->Extensions.ARB_texture_view)
2088             goto invalid_pname;
2089          *params = (GLint) obj->MinLayer;
2090          break;
2091
2092       case GL_TEXTURE_VIEW_NUM_LAYERS:
2093          if (!ctx->Extensions.ARB_texture_view)
2094             goto invalid_pname;
2095          *params = (GLint) obj->NumLayers;
2096          break;
2097
2098       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2099          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2100             goto invalid_pname;
2101          *params = obj->RequiredTextureImageUnits;
2102          break;
2103
2104       case GL_TEXTURE_SRGB_DECODE_EXT:
2105          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2106             goto invalid_pname;
2107          *params = obj->Sampler.sRGBDecode;
2108          break;
2109
2110       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2111          if (!ctx->Extensions.ARB_shader_image_load_store)
2112             goto invalid_pname;
2113          *params = obj->ImageFormatCompatibilityType;
2114          break;
2115
2116       default:
2117          goto invalid_pname;
2118    }
2119
2120    /* no error if we get here */
2121    _mesa_unlock_texture(ctx, obj);
2122    return;
2123
2124 invalid_pname:
2125    _mesa_unlock_texture(ctx, obj);
2126    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameteriv(pname=0x%x)",
2127                dsa ? "ture" : "", pname);
2128 }
2129
2130 static void
2131 get_tex_parameterIiv(struct gl_context *ctx,
2132                      struct gl_texture_object *obj,
2133                      GLenum pname, GLint *params, bool dsa)
2134 {
2135    switch (pname) {
2136    case GL_TEXTURE_BORDER_COLOR:
2137       COPY_4V(params, obj->Sampler.BorderColor.i);
2138       break;
2139    default:
2140       get_tex_parameteriv(ctx, obj, pname, params, dsa);
2141    }
2142 }
2143
2144 static void
2145 get_tex_parameterIuiv(struct gl_context *ctx,
2146                       struct gl_texture_object *obj,
2147                       GLenum pname, GLuint *params, bool dsa)
2148 {
2149    switch (pname) {
2150    case GL_TEXTURE_BORDER_COLOR:
2151       COPY_4V(params, obj->Sampler.BorderColor.i);
2152       break;
2153    default:
2154       {
2155          GLint ip[4];
2156          get_tex_parameteriv(ctx, obj, pname, ip, dsa);
2157          params[0] = ip[0];
2158          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
2159              pname == GL_TEXTURE_CROP_RECT_OES) {
2160             params[1] = ip[1];
2161             params[2] = ip[2];
2162             params[3] = ip[3];
2163          }
2164       }
2165    }
2166 }
2167
2168 void GLAPIENTRY
2169 _mesa_GetTexParameterfv(GLenum target, GLenum pname, GLfloat *params)
2170 {
2171    struct gl_texture_object *obj;
2172    GET_CURRENT_CONTEXT(ctx);
2173
2174    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2175    if (!obj)
2176       return;
2177
2178    get_tex_parameterfv(ctx, obj, pname, params, false);
2179 }
2180
2181 void GLAPIENTRY
2182 _mesa_GetTexParameteriv(GLenum target, GLenum pname, GLint *params)
2183 {
2184    struct gl_texture_object *obj;
2185    GET_CURRENT_CONTEXT(ctx);
2186
2187    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2188    if (!obj)
2189       return;
2190
2191    get_tex_parameteriv(ctx, obj, pname, params, false);
2192 }
2193
2194 /** New in GL 3.0 */
2195 void GLAPIENTRY
2196 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
2197 {
2198    struct gl_texture_object *texObj;
2199    GET_CURRENT_CONTEXT(ctx);
2200
2201    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2202    if (!texObj)
2203       return;
2204
2205    get_tex_parameterIiv(ctx, texObj, pname, params, false);
2206 }
2207
2208
2209 /** New in GL 3.0 */
2210 void GLAPIENTRY
2211 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
2212 {
2213    struct gl_texture_object *texObj;
2214    GET_CURRENT_CONTEXT(ctx);
2215
2216    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2217    if (!texObj)
2218       return;
2219
2220    get_tex_parameterIuiv(ctx, texObj, pname, params, false);
2221 }
2222
2223
2224 void GLAPIENTRY
2225 _mesa_GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat *params)
2226 {
2227    struct gl_texture_object *obj;
2228    GET_CURRENT_CONTEXT(ctx);
2229
2230    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2231    if (!obj) {
2232       /* User passed a non-generated name. */
2233       _mesa_error(ctx, GL_INVALID_OPERATION,
2234                   "glGetTextureParameterfv(texture)");
2235       return;
2236    }
2237
2238    get_tex_parameterfv(ctx, obj, pname, params, true);
2239 }
2240
2241 void GLAPIENTRY
2242 _mesa_GetTextureParameteriv(GLuint texture, GLenum pname, GLint *params)
2243 {
2244    struct gl_texture_object *obj;
2245    GET_CURRENT_CONTEXT(ctx);
2246
2247    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2248    if (!obj) {
2249       /* User passed a non-generated name. */
2250       _mesa_error(ctx, GL_INVALID_OPERATION,
2251                   "glGetTextureParameteriv(texture)");
2252       return;
2253    }
2254
2255    get_tex_parameteriv(ctx, obj, pname, params, true);
2256 }
2257
2258 void GLAPIENTRY
2259 _mesa_GetTextureParameterIiv(GLuint texture, GLenum pname, GLint *params)
2260 {
2261    struct gl_texture_object *texObj;
2262    GET_CURRENT_CONTEXT(ctx);
2263
2264    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2265    if (!texObj) {
2266       /* User passed a non-generated name. */
2267       _mesa_error(ctx, GL_INVALID_OPERATION,
2268                   "glGetTextureParameterIiv(texture)");
2269       return;
2270    }
2271
2272    get_tex_parameterIiv(ctx, texObj, pname, params, true);
2273 }
2274
2275
2276 void GLAPIENTRY
2277 _mesa_GetTextureParameterIuiv(GLuint texture, GLenum pname, GLuint *params)
2278 {
2279    struct gl_texture_object *texObj;
2280    GET_CURRENT_CONTEXT(ctx);
2281
2282    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2283    if (!texObj) {
2284       /* User passed a non-generated name. */
2285       _mesa_error(ctx, GL_INVALID_OPERATION,
2286                   "glGetTextureParameterIuiv(texture)");
2287       return;
2288    }
2289
2290    get_tex_parameterIuiv(ctx, texObj, pname, params, true);
2291 }