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 = ctx->API != API_OPENGLES && 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_enum_to_string(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_has_ARB_stencil_texturing(ctx) || _mesa_is_gles31(ctx)) {
 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 (ctx->Extensions.EXT_texture_sRGB_decode) {
 572          GLenum decode = params[0];
 573
 574          if (!target_allows_setting_sampler_parameters(texObj->Target))
 575             goto invalid_enum;
 576
 577          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 578             if (texObj->Sampler.sRGBDecode != decode) {
 579                flush(ctx);
 580                texObj->Sampler.sRGBDecode = decode;
 581             }
 582             return GL_TRUE;
 583          }
 584       }
 585       goto invalid_pname;
 586
 587    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 588       if (_mesa_is_desktop_gl(ctx)
 589           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 590          GLenum param = params[0];
 591
 592          if (!target_allows_setting_sampler_parameters(texObj->Target))
 593             goto invalid_enum;
 594
 595          if (param != GL_TRUE && param != GL_FALSE) {
 596             goto invalid_param;
 597          }
 598          if (param != texObj->Sampler.CubeMapSeamless) {
 599             flush(ctx);
 600             texObj->Sampler.CubeMapSeamless = param;
 601          }
 602          return GL_TRUE;
 603       }
 604       goto invalid_pname;
 605
 606    default:
 607       goto invalid_pname;
 608    }
 609
 610 invalid_pname:
 611    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 612                suffix, _mesa_enum_to_string(pname));
 613    return GL_FALSE;
 614
 615 invalid_param:
 616    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(param=%s)",
 617                suffix, _mesa_enum_to_string(params[0]));
 618    return GL_FALSE;
 619
 620 invalid_operation:
 621    _mesa_error(ctx, GL_INVALID_OPERATION, "glTex%sParameter(pname=%s)",
 622                suffix, _mesa_enum_to_string(pname));
 623    return GL_FALSE;
 624
 625 invalid_enum:
 626    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 627                suffix, _mesa_enum_to_string(pname));
 628    return GL_FALSE;
 629 }
 630
 631
 632 /**
 633  * Set a float-valued texture parameter
 634  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 635  */
 636 static GLboolean
 637 set_tex_parameterf(struct gl_context *ctx,
 638                    struct gl_texture_object *texObj,
 639                    GLenum pname, const GLfloat *params, bool dsa)
 640 {
 641    const char *suffix = dsa ? "ture" : "";
 642
 643    switch (pname) {
 644    case GL_TEXTURE_MIN_LOD:
 645       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 646          goto invalid_pname;
 647
 648       if (!target_allows_setting_sampler_parameters(texObj->Target))
 649          goto invalid_enum;
 650
 651       if (texObj->Sampler.MinLod == params[0])
 652          return GL_FALSE;
 653       flush(ctx);
 654       texObj->Sampler.MinLod = params[0];
 655       return GL_TRUE;
 656
 657    case GL_TEXTURE_MAX_LOD:
 658       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 659          goto invalid_pname;
 660
 661       if (!target_allows_setting_sampler_parameters(texObj->Target))
 662          goto invalid_enum;
 663
 664       if (texObj->Sampler.MaxLod == params[0])
 665          return GL_FALSE;
 666       flush(ctx);
 667       texObj->Sampler.MaxLod = params[0];
 668       return GL_TRUE;
 669
 670    case GL_TEXTURE_PRIORITY:
 671       if (ctx->API != API_OPENGL_COMPAT)
 672          goto invalid_pname;
 673
 674       flush(ctx);
 675       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 676       return GL_TRUE;
 677
 678    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 679       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 680          if (!target_allows_setting_sampler_parameters(texObj->Target))
 681             goto invalid_enum;
 682
 683          if (texObj->Sampler.MaxAnisotropy == params[0])
 684             return GL_FALSE;
 685          if (params[0] < 1.0F) {
 686             _mesa_error(ctx, GL_INVALID_VALUE, "glTex%sParameter(param)",
 687                         suffix);
 688             return GL_FALSE;
 689          }
 690          flush(ctx);
 691          /* clamp to max, that's what NVIDIA does */
 692          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 693                                       ctx->Const.MaxTextureMaxAnisotropy);
 694          return GL_TRUE;
 695       }
 696       else {
 697          static GLuint count = 0;
 698          if (count++ < 10)
 699             goto invalid_pname;
 700       }
 701       return GL_FALSE;
 702
 703    case GL_TEXTURE_LOD_BIAS:
 704       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 705       if (_mesa_is_gles(ctx))
 706          goto invalid_pname;
 707
 708       if (!target_allows_setting_sampler_parameters(texObj->Target))
 709          goto invalid_enum;
 710
 711       if (texObj->Sampler.LodBias != params[0]) {
 712          flush(ctx);
 713          texObj->Sampler.LodBias = params[0];
 714          return GL_TRUE;
 715       }
 716       break;
 717
 718    case GL_TEXTURE_BORDER_COLOR:
 719       if (ctx->API == API_OPENGLES ||
 720           !ctx->Extensions.ARB_texture_border_clamp)
 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_enum_to_string(pname));
 749    return GL_FALSE;
 750
 751 invalid_enum:
 752    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 753                suffix, _mesa_enum_to_string(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    /* Common targets for desktop GL and GLES 3.1. */
1210    switch (target) {
1211    case GL_TEXTURE_2D:
1212    case GL_TEXTURE_3D:
1213       return GL_TRUE;
1214    case GL_TEXTURE_2D_ARRAY_EXT:
1215       return ctx->Extensions.EXT_texture_array;
1216    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1217    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1218    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1219    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1220    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1221    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1222       return ctx->Extensions.ARB_texture_cube_map;
1223    case GL_TEXTURE_2D_MULTISAMPLE:
1224    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1225       return ctx->Extensions.ARB_texture_multisample;
1226    }
1227
1228    if (!_mesa_is_desktop_gl(ctx))
1229       return GL_FALSE;
1230
1231    /* Rest of the desktop GL targets. */
1232    switch (target) {
1233    case GL_TEXTURE_1D:
1234    case GL_PROXY_TEXTURE_1D:
1235    case GL_PROXY_TEXTURE_2D:
1236    case GL_PROXY_TEXTURE_3D:
1237       return GL_TRUE;
1238    case GL_PROXY_TEXTURE_CUBE_MAP:
1239       return ctx->Extensions.ARB_texture_cube_map;
1240    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1241    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1242       return ctx->Extensions.ARB_texture_cube_map_array;
1243    case GL_TEXTURE_RECTANGLE_NV:
1244    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1245       return ctx->Extensions.NV_texture_rectangle;
1246    case GL_TEXTURE_1D_ARRAY_EXT:
1247    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1248    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1249       return ctx->Extensions.EXT_texture_array;
1250    case GL_TEXTURE_BUFFER:
1251       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1252        * but not in earlier versions that expose ARB_texture_buffer_object.
1253        *
1254        * From the ARB_texture_buffer_object spec:
1255        * "(7) Do buffer textures support texture parameters (TexParameter) or
1256        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1257        *
1258        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1259        *    explicit error language for any of these cases.  That is because
1260        *    each of the functions enumerate the set of valid <target>
1261        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1262        *    these cases means that target is not legal, and an INVALID_ENUM
1263        *    error should be generated."
1264        *
1265        * From the OpenGL 3.1 spec:
1266        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1267        */
1268       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1269    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1270    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1271       return ctx->Extensions.ARB_texture_multisample;
1272
1273    /*  This is a valid target for dsa, but the OpenGL 4.5 core spec
1274     *  (30.10.2014) Section 8.11 Texture Queries says:
1275     *       "For GetTextureLevelParameter* only, texture may also be a cube
1276     *       map texture object.  In this case the query is always performed
1277     *       for face zero (the TEXTURE_CUBE_MAP_POSITIVE_X face), since there
1278     *       is no way to specify another face."
1279     */
1280    case GL_TEXTURE_CUBE_MAP:
1281       return dsa;
1282    default:
1283       return GL_FALSE;
1284    }
1285 }
1286
1287
1288 static void
1289 get_tex_level_parameter_image(struct gl_context *ctx,
1290                               const struct gl_texture_object *texObj,
1291                               GLenum target, GLint level,
1292                               GLenum pname, GLint *params,
1293                               bool dsa)
1294 {
1295    const struct gl_texture_image *img = NULL;
1296    struct gl_texture_image dummy_image;
1297    mesa_format texFormat;
1298    const char *suffix = dsa ? "ture" : "";
1299
1300    img = _mesa_select_tex_image(texObj, target, level);
1301    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1302       /* In case of undefined texture image return the default values.
1303        *
1304        * From OpenGL 4.0 spec, page 398:
1305        *    "The initial internal format of a texel array is RGBA
1306        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1307        *     use TEXTURE_INTERNAL_FORMAT."
1308        */
1309       memset(&dummy_image, 0, sizeof(dummy_image));
1310       dummy_image.TexFormat = MESA_FORMAT_NONE;
1311       dummy_image.InternalFormat = GL_RGBA;
1312       dummy_image._BaseFormat = GL_NONE;
1313       dummy_image.FixedSampleLocations = GL_TRUE;
1314
1315       img = &dummy_image;
1316    }
1317
1318    texFormat = img->TexFormat;
1319
1320    switch (pname) {
1321       case GL_TEXTURE_WIDTH:
1322          *params = img->Width;
1323          break;
1324       case GL_TEXTURE_HEIGHT:
1325          *params = img->Height;
1326          break;
1327       case GL_TEXTURE_DEPTH:
1328          *params = img->Depth;
1329          break;
1330       case GL_TEXTURE_INTERNAL_FORMAT:
1331          if (_mesa_is_format_compressed(texFormat)) {
1332             /* need to return the actual compressed format */
1333             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1334          }
1335          else {
1336             /* If the true internal format is not compressed but the user
1337              * requested a generic compressed format, we have to return the
1338              * generic base format that matches.
1339              *
1340              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1341              *
1342              *     "If no specific compressed format is available,
1343              *     internalformat is instead replaced by the corresponding base
1344              *     internal format."
1345              *
1346              * Otherwise just return the user's requested internal format
1347              */
1348             const GLenum f =
1349                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1350
1351             *params = (f != 0) ? f : img->InternalFormat;
1352          }
1353          break;
1354       case GL_TEXTURE_BORDER:
1355          if (ctx->API != API_OPENGL_COMPAT)
1356             goto invalid_pname;
1357          *params = img->Border;
1358          break;
1359       case GL_TEXTURE_RED_SIZE:
1360       case GL_TEXTURE_GREEN_SIZE:
1361       case GL_TEXTURE_BLUE_SIZE:
1362       case GL_TEXTURE_ALPHA_SIZE:
1363          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1364             *params = _mesa_get_format_bits(texFormat, pname);
1365          else
1366             *params = 0;
1367          break;
1368       case GL_TEXTURE_INTENSITY_SIZE:
1369       case GL_TEXTURE_LUMINANCE_SIZE:
1370          if (ctx->API != API_OPENGL_COMPAT)
1371             goto invalid_pname;
1372          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1373             *params = _mesa_get_format_bits(texFormat, pname);
1374             if (*params == 0) {
1375                /* intensity or luminance is probably stored as RGB[A] */
1376                *params = MIN2(_mesa_get_format_bits(texFormat,
1377                                                     GL_TEXTURE_RED_SIZE),
1378                               _mesa_get_format_bits(texFormat,
1379                                                     GL_TEXTURE_GREEN_SIZE));
1380             }
1381          }
1382          else {
1383             *params = 0;
1384          }
1385          break;
1386       case GL_TEXTURE_DEPTH_SIZE_ARB:
1387          if (!ctx->Extensions.ARB_depth_texture)
1388             goto invalid_pname;
1389          *params = _mesa_get_format_bits(texFormat, pname);
1390          break;
1391       case GL_TEXTURE_STENCIL_SIZE:
1392          *params = _mesa_get_format_bits(texFormat, pname);
1393          break;
1394       case GL_TEXTURE_SHARED_SIZE:
1395          if (ctx->Version < 30 &&
1396              !ctx->Extensions.EXT_texture_shared_exponent)
1397             goto invalid_pname;
1398          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1399          break;
1400
1401       /* GL_ARB_texture_compression */
1402       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1403          if (_mesa_is_format_compressed(texFormat) &&
1404              !_mesa_is_proxy_texture(target)) {
1405             *params = _mesa_format_image_size(texFormat, img->Width,
1406                                               img->Height, img->Depth);
1407     }
1408     else {
1409        _mesa_error(ctx, GL_INVALID_OPERATION,
1410                    "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1411                    _mesa_enum_to_string(pname));
1412     }
1413          break;
1414       case GL_TEXTURE_COMPRESSED:
1415          *params = (GLint) _mesa_is_format_compressed(texFormat);
1416          break;
1417
1418       /* GL_ARB_texture_float */
1419       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1420       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1421          if (ctx->API != API_OPENGL_COMPAT)
1422             goto invalid_pname;
1423          /* FALLTHROUGH */
1424       case GL_TEXTURE_RED_TYPE_ARB:
1425       case GL_TEXTURE_GREEN_TYPE_ARB:
1426       case GL_TEXTURE_BLUE_TYPE_ARB:
1427       case GL_TEXTURE_ALPHA_TYPE_ARB:
1428       case GL_TEXTURE_DEPTH_TYPE_ARB:
1429          if (!ctx->Extensions.ARB_texture_float)
1430             goto invalid_pname;
1431          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1432             *params = _mesa_get_format_datatype(texFormat);
1433          else
1434             *params = GL_NONE;
1435          break;
1436
1437       /* GL_ARB_texture_multisample */
1438       case GL_TEXTURE_SAMPLES:
1439          if (!ctx->Extensions.ARB_texture_multisample)
1440             goto invalid_pname;
1441          *params = img->NumSamples;
1442          break;
1443
1444       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1445          if (!ctx->Extensions.ARB_texture_multisample)
1446             goto invalid_pname;
1447          *params = img->FixedSampleLocations;
1448          break;
1449
1450       default:
1451          goto invalid_pname;
1452    }
1453
1454    /* no error if we get here */
1455    return;
1456
1457 invalid_pname:
1458    _mesa_error(ctx, GL_INVALID_ENUM,
1459                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1460                _mesa_enum_to_string(pname));
1461 }
1462
1463
1464 static void
1465 get_tex_level_parameter_buffer(struct gl_context *ctx,
1466                                const struct gl_texture_object *texObj,
1467                                GLenum pname, GLint *params, bool dsa)
1468 {
1469    const struct gl_buffer_object *bo = texObj->BufferObject;
1470    mesa_format texFormat = texObj->_BufferObjectFormat;
1471    GLenum internalFormat = texObj->BufferObjectFormat;
1472    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1473    const char *suffix = dsa ? "ture" : "";
1474
1475    if (!bo) {
1476       /* undefined texture buffer object */
1477       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1478       return;
1479    }
1480
1481    switch (pname) {
1482       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1483          *params = bo->Name;
1484          break;
1485       case GL_TEXTURE_WIDTH:
1486          *params = bo->Size;
1487          break;
1488       case GL_TEXTURE_HEIGHT:
1489       case GL_TEXTURE_DEPTH:
1490       case GL_TEXTURE_BORDER:
1491       case GL_TEXTURE_SHARED_SIZE:
1492       case GL_TEXTURE_COMPRESSED:
1493          *params = 0;
1494          break;
1495       case GL_TEXTURE_INTERNAL_FORMAT:
1496          *params = internalFormat;
1497          break;
1498       case GL_TEXTURE_RED_SIZE:
1499       case GL_TEXTURE_GREEN_SIZE:
1500       case GL_TEXTURE_BLUE_SIZE:
1501       case GL_TEXTURE_ALPHA_SIZE:
1502          if (_mesa_base_format_has_channel(baseFormat, pname))
1503             *params = _mesa_get_format_bits(texFormat, pname);
1504          else
1505             *params = 0;
1506          break;
1507       case GL_TEXTURE_INTENSITY_SIZE:
1508       case GL_TEXTURE_LUMINANCE_SIZE:
1509          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1510             *params = _mesa_get_format_bits(texFormat, pname);
1511             if (*params == 0) {
1512                /* intensity or luminance is probably stored as RGB[A] */
1513                *params = MIN2(_mesa_get_format_bits(texFormat,
1514                                                     GL_TEXTURE_RED_SIZE),
1515                               _mesa_get_format_bits(texFormat,
1516                                                     GL_TEXTURE_GREEN_SIZE));
1517             }
1518          } else {
1519             *params = 0;
1520          }
1521          break;
1522       case GL_TEXTURE_DEPTH_SIZE_ARB:
1523       case GL_TEXTURE_STENCIL_SIZE_EXT:
1524          *params = _mesa_get_format_bits(texFormat, pname);
1525          break;
1526
1527       /* GL_ARB_texture_buffer_range */
1528       case GL_TEXTURE_BUFFER_OFFSET:
1529          if (!ctx->Extensions.ARB_texture_buffer_range)
1530             goto invalid_pname;
1531          *params = texObj->BufferOffset;
1532          break;
1533       case GL_TEXTURE_BUFFER_SIZE:
1534          if (!ctx->Extensions.ARB_texture_buffer_range)
1535             goto invalid_pname;
1536          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1537          break;
1538
1539       /* GL_ARB_texture_compression */
1540       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1541          /* Always illegal for GL_TEXTURE_BUFFER */
1542          _mesa_error(ctx, GL_INVALID_OPERATION,
1543                      "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1544                      _mesa_enum_to_string(pname));
1545          break;
1546
1547       /* GL_ARB_texture_float */
1548       case GL_TEXTURE_RED_TYPE_ARB:
1549       case GL_TEXTURE_GREEN_TYPE_ARB:
1550       case GL_TEXTURE_BLUE_TYPE_ARB:
1551       case GL_TEXTURE_ALPHA_TYPE_ARB:
1552       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1553       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1554       case GL_TEXTURE_DEPTH_TYPE_ARB:
1555          if (!ctx->Extensions.ARB_texture_float)
1556             goto invalid_pname;
1557          if (_mesa_base_format_has_channel(baseFormat, pname))
1558             *params = _mesa_get_format_datatype(texFormat);
1559          else
1560             *params = GL_NONE;
1561          break;
1562
1563       default:
1564          goto invalid_pname;
1565    }
1566
1567    /* no error if we get here */
1568    return;
1569
1570 invalid_pname:
1571    _mesa_error(ctx, GL_INVALID_ENUM,
1572                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1573                _mesa_enum_to_string(pname));
1574 }
1575
1576 static bool
1577 valid_tex_level_parameteriv_target(struct gl_context *ctx, GLenum target,
1578                                    bool dsa)
1579 {
1580    const char *suffix = dsa ? "ture" : "";
1581    if (!legal_get_tex_level_parameter_target(ctx, target, dsa)) {
1582       _mesa_error(ctx, GL_INVALID_ENUM,
1583                   "glGetTex%sLevelParameter[if]v(target=%s)", suffix,
1584                   _mesa_enum_to_string(target));
1585       return false;
1586    }
1587    return true;
1588 }
1589
1590 /**
1591  * This isn't exposed to the rest of the driver because it is a part of the
1592  * OpenGL API that is rarely used.
1593  */
1594 static void
1595 get_tex_level_parameteriv(struct gl_context *ctx,
1596                           struct gl_texture_object *texObj,
1597                           GLenum target, GLint level,
1598                           GLenum pname, GLint *params,
1599                           bool dsa)
1600 {
1601    GLint maxLevels;
1602    const char *suffix = dsa ? "ture" : "";
1603
1604    /* Check for errors */
1605    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1606       _mesa_error(ctx, GL_INVALID_OPERATION,
1607                   "glGetTex%sLevelParameter[if]v("
1608                   "current unit >= max combined texture units)", suffix);
1609       return;
1610    }
1611
1612    maxLevels = _mesa_max_texture_levels(ctx, target);
1613    assert(maxLevels != 0);
1614
1615    if (level < 0 || level >= maxLevels) {
1616       _mesa_error(ctx, GL_INVALID_VALUE,
1617                   "glGetTex%sLevelParameter[if]v(level out of range)", suffix);
1618       return;
1619    }
1620
1621    /* Get the level parameter */
1622    if (target == GL_TEXTURE_BUFFER) {
1623       get_tex_level_parameter_buffer(ctx, texObj, pname, params, dsa);
1624    }
1625    else {
1626       get_tex_level_parameter_image(ctx, texObj, target,
1627                                     level, pname, params, dsa);
1628    }
1629 }
1630
1631 void GLAPIENTRY
1632 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1633                               GLenum pname, GLfloat *params )
1634 {
1635    struct gl_texture_object *texObj;
1636    GLint iparam;
1637    GET_CURRENT_CONTEXT(ctx);
1638
1639    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1640       return;
1641
1642    texObj = _mesa_get_current_tex_object(ctx, target);
1643    if (!texObj)
1644       return;
1645
1646    get_tex_level_parameteriv(ctx, texObj, target, level,
1647                              pname, &iparam, false);
1648
1649    *params = (GLfloat) iparam;
1650 }
1651
1652 void GLAPIENTRY
1653 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1654                               GLenum pname, GLint *params )
1655 {
1656    struct gl_texture_object *texObj;
1657    GET_CURRENT_CONTEXT(ctx);
1658
1659    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1660       return;
1661
1662    texObj = _mesa_get_current_tex_object(ctx, target);
1663    if (!texObj)
1664       return;
1665
1666    get_tex_level_parameteriv(ctx, texObj, target, level,
1667                              pname, params, false);
1668 }
1669
1670 void GLAPIENTRY
1671 _mesa_GetTextureLevelParameterfv(GLuint texture, GLint level,
1672                                  GLenum pname, GLfloat *params)
1673 {
1674    struct gl_texture_object *texObj;
1675    GLint iparam;
1676    GET_CURRENT_CONTEXT(ctx);
1677
1678    texObj = _mesa_lookup_texture_err(ctx, texture,
1679                                      "glGetTextureLevelParameterfv");
1680    if (!texObj)
1681       return;
1682
1683    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1684       return;
1685
1686    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1687                              pname, &iparam, true);
1688
1689    *params = (GLfloat) iparam;
1690 }
1691
1692 void GLAPIENTRY
1693 _mesa_GetTextureLevelParameteriv(GLuint texture, GLint level,
1694                                  GLenum pname, GLint *params)
1695 {
1696    struct gl_texture_object *texObj;
1697    GET_CURRENT_CONTEXT(ctx);
1698
1699    texObj = _mesa_lookup_texture_err(ctx, texture,
1700                                      "glGetTextureLevelParameteriv");
1701    if (!texObj)
1702       return;
1703
1704    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1705       return;
1706
1707    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1708                              pname, params, true);
1709 }
1710
1711 /**
1712  * This isn't exposed to the rest of the driver because it is a part of the
1713  * OpenGL API that is rarely used.
1714  */
1715 static void
1716 get_tex_parameterfv(struct gl_context *ctx,
1717                     struct gl_texture_object *obj,
1718                     GLenum pname, GLfloat *params, bool dsa)
1719 {
1720    _mesa_lock_context_textures(ctx);
1721    switch (pname) {
1722       case GL_TEXTURE_MAG_FILTER:
1723          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1724          break;
1725       case GL_TEXTURE_MIN_FILTER:
1726          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1727          break;
1728       case GL_TEXTURE_WRAP_S:
1729          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1730          break;
1731       case GL_TEXTURE_WRAP_T:
1732          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1733          break;
1734       case GL_TEXTURE_WRAP_R:
1735          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1736          break;
1737       case GL_TEXTURE_BORDER_COLOR:
1738          if (ctx->API == API_OPENGLES ||
1739              !ctx->Extensions.ARB_texture_border_clamp)
1740             goto invalid_pname;
1741
1742          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1743             _mesa_update_state_locked(ctx);
1744          if (_mesa_get_clamp_fragment_color(ctx, ctx->DrawBuffer)) {
1745             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1746             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1747             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1748             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1749          }
1750          else {
1751             params[0] = obj->Sampler.BorderColor.f[0];
1752             params[1] = obj->Sampler.BorderColor.f[1];
1753             params[2] = obj->Sampler.BorderColor.f[2];
1754             params[3] = obj->Sampler.BorderColor.f[3];
1755          }
1756          break;
1757       case GL_TEXTURE_RESIDENT:
1758          if (ctx->API != API_OPENGL_COMPAT)
1759             goto invalid_pname;
1760
1761          *params = 1.0F;
1762          break;
1763       case GL_TEXTURE_PRIORITY:
1764          if (ctx->API != API_OPENGL_COMPAT)
1765             goto invalid_pname;
1766
1767          *params = obj->Priority;
1768          break;
1769       case GL_TEXTURE_MIN_LOD:
1770          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1771             goto invalid_pname;
1772
1773          *params = obj->Sampler.MinLod;
1774          break;
1775       case GL_TEXTURE_MAX_LOD:
1776          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1777             goto invalid_pname;
1778
1779          *params = obj->Sampler.MaxLod;
1780          break;
1781       case GL_TEXTURE_BASE_LEVEL:
1782          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1783             goto invalid_pname;
1784
1785          *params = (GLfloat) obj->BaseLevel;
1786          break;
1787       case GL_TEXTURE_MAX_LEVEL:
1788          *params = (GLfloat) obj->MaxLevel;
1789          break;
1790       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1791          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1792             goto invalid_pname;
1793          *params = obj->Sampler.MaxAnisotropy;
1794          break;
1795       case GL_GENERATE_MIPMAP_SGIS:
1796          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1797             goto invalid_pname;
1798
1799          *params = (GLfloat) obj->GenerateMipmap;
1800          break;
1801       case GL_TEXTURE_COMPARE_MODE_ARB:
1802          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1803              && !_mesa_is_gles3(ctx))
1804             goto invalid_pname;
1805          *params = (GLfloat) obj->Sampler.CompareMode;
1806          break;
1807       case GL_TEXTURE_COMPARE_FUNC_ARB:
1808          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1809              && !_mesa_is_gles3(ctx))
1810             goto invalid_pname;
1811          *params = (GLfloat) obj->Sampler.CompareFunc;
1812          break;
1813       case GL_DEPTH_TEXTURE_MODE_ARB:
1814          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1815           * never existed in OpenGL ES.
1816           */
1817          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1818             goto invalid_pname;
1819          *params = (GLfloat) obj->DepthMode;
1820          break;
1821       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1822          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
1823             goto invalid_pname;
1824          *params = (GLfloat)
1825             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1826          break;
1827       case GL_TEXTURE_LOD_BIAS:
1828          if (_mesa_is_gles(ctx))
1829             goto invalid_pname;
1830
1831          *params = obj->Sampler.LodBias;
1832          break;
1833       case GL_TEXTURE_CROP_RECT_OES:
1834          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1835             goto invalid_pname;
1836
1837          params[0] = (GLfloat) obj->CropRect[0];
1838          params[1] = (GLfloat) obj->CropRect[1];
1839          params[2] = (GLfloat) obj->CropRect[2];
1840          params[3] = (GLfloat) obj->CropRect[3];
1841          break;
1842
1843       case GL_TEXTURE_SWIZZLE_R_EXT:
1844       case GL_TEXTURE_SWIZZLE_G_EXT:
1845       case GL_TEXTURE_SWIZZLE_B_EXT:
1846       case GL_TEXTURE_SWIZZLE_A_EXT:
1847          if ((!_mesa_is_desktop_gl(ctx)
1848               || !ctx->Extensions.EXT_texture_swizzle)
1849              && !_mesa_is_gles3(ctx))
1850             goto invalid_pname;
1851          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1852          break;
1853
1854       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1855          if ((!_mesa_is_desktop_gl(ctx)
1856               || !ctx->Extensions.EXT_texture_swizzle)
1857              && !_mesa_is_gles3(ctx)) {
1858             goto invalid_pname;
1859          }
1860          else {
1861             GLuint comp;
1862             for (comp = 0; comp < 4; comp++) {
1863                params[comp] = (GLfloat) obj->Swizzle[comp];
1864             }
1865          }
1866          break;
1867
1868       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1869          if (!_mesa_is_desktop_gl(ctx)
1870              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1871             goto invalid_pname;
1872          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1873          break;
1874
1875       case GL_TEXTURE_IMMUTABLE_FORMAT:
1876          *params = (GLfloat) obj->Immutable;
1877          break;
1878
1879       case GL_TEXTURE_IMMUTABLE_LEVELS:
1880          if (_mesa_is_gles3(ctx) ||
1881              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1882             *params = (GLfloat) obj->ImmutableLevels;
1883          else
1884             goto invalid_pname;
1885          break;
1886
1887       case GL_TEXTURE_VIEW_MIN_LEVEL:
1888          if (!ctx->Extensions.ARB_texture_view)
1889             goto invalid_pname;
1890          *params = (GLfloat) obj->MinLevel;
1891          break;
1892
1893       case GL_TEXTURE_VIEW_NUM_LEVELS:
1894          if (!ctx->Extensions.ARB_texture_view)
1895             goto invalid_pname;
1896          *params = (GLfloat) obj->NumLevels;
1897          break;
1898
1899       case GL_TEXTURE_VIEW_MIN_LAYER:
1900          if (!ctx->Extensions.ARB_texture_view)
1901             goto invalid_pname;
1902          *params = (GLfloat) obj->MinLayer;
1903          break;
1904
1905       case GL_TEXTURE_VIEW_NUM_LAYERS:
1906          if (!ctx->Extensions.ARB_texture_view)
1907             goto invalid_pname;
1908          *params = (GLfloat) obj->NumLayers;
1909          break;
1910
1911       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1912          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1913             goto invalid_pname;
1914          *params = (GLfloat) obj->RequiredTextureImageUnits;
1915          break;
1916
1917       case GL_TEXTURE_SRGB_DECODE_EXT:
1918          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1919             goto invalid_pname;
1920          *params = (GLfloat) obj->Sampler.sRGBDecode;
1921          break;
1922
1923       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
1924          if (!ctx->Extensions.ARB_shader_image_load_store)
1925             goto invalid_pname;
1926          *params = (GLfloat) obj->ImageFormatCompatibilityType;
1927          break;
1928
1929       case GL_TEXTURE_TARGET:
1930          if (ctx->API != API_OPENGL_CORE)
1931             goto invalid_pname;
1932          *params = ENUM_TO_FLOAT(obj->Target);
1933          break;
1934
1935       default:
1936          goto invalid_pname;
1937    }
1938
1939    /* no error if we get here */
1940    _mesa_unlock_context_textures(ctx);
1941    return;
1942
1943 invalid_pname:
1944    _mesa_unlock_context_textures(ctx);
1945    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameterfv(pname=0x%x)",
1946                dsa ? "ture" : "", pname);
1947 }
1948
1949
1950 static void
1951 get_tex_parameteriv(struct gl_context *ctx,
1952                     struct gl_texture_object *obj,
1953                     GLenum pname, GLint *params, bool dsa)
1954 {
1955    _mesa_lock_texture(ctx, obj);
1956    switch (pname) {
1957       case GL_TEXTURE_MAG_FILTER:
1958          *params = (GLint) obj->Sampler.MagFilter;
1959          break;
1960       case GL_TEXTURE_MIN_FILTER:
1961          *params = (GLint) obj->Sampler.MinFilter;
1962          break;
1963       case GL_TEXTURE_WRAP_S:
1964          *params = (GLint) obj->Sampler.WrapS;
1965          break;
1966       case GL_TEXTURE_WRAP_T:
1967          *params = (GLint) obj->Sampler.WrapT;
1968          break;
1969       case GL_TEXTURE_WRAP_R:
1970          *params = (GLint) obj->Sampler.WrapR;
1971          break;
1972       case GL_TEXTURE_BORDER_COLOR:
1973          if (ctx->API == API_OPENGLES ||
1974              !ctx->Extensions.ARB_texture_border_clamp)
1975             goto invalid_pname;
1976
1977          {
1978             GLfloat b[4];
1979             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1980             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1981             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1982             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1983             params[0] = FLOAT_TO_INT(b[0]);
1984             params[1] = FLOAT_TO_INT(b[1]);
1985             params[2] = FLOAT_TO_INT(b[2]);
1986             params[3] = FLOAT_TO_INT(b[3]);
1987          }
1988          break;
1989       case GL_TEXTURE_RESIDENT:
1990          if (ctx->API != API_OPENGL_COMPAT)
1991             goto invalid_pname;
1992
1993          *params = 1;
1994          break;
1995       case GL_TEXTURE_PRIORITY:
1996          if (ctx->API != API_OPENGL_COMPAT)
1997             goto invalid_pname;
1998
1999          *params = FLOAT_TO_INT(obj->Priority);
2000          break;
2001       case GL_TEXTURE_MIN_LOD:
2002          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2003             goto invalid_pname;
2004          /* GL spec 'Data Conversions' section specifies that floating-point
2005           * value in integer Get function is rounded to nearest integer
2006           */
2007          *params = IROUND(obj->Sampler.MinLod);
2008          break;
2009       case GL_TEXTURE_MAX_LOD:
2010          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2011             goto invalid_pname;
2012          /* GL spec 'Data Conversions' section specifies that floating-point
2013           * value in integer Get function is rounded to nearest integer
2014           */
2015          *params = IROUND(obj->Sampler.MaxLod);
2016          break;
2017       case GL_TEXTURE_BASE_LEVEL:
2018          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2019             goto invalid_pname;
2020
2021          *params = obj->BaseLevel;
2022          break;
2023       case GL_TEXTURE_MAX_LEVEL:
2024          *params = obj->MaxLevel;
2025          break;
2026       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
2027          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
2028             goto invalid_pname;
2029          /* GL spec 'Data Conversions' section specifies that floating-point
2030           * value in integer Get function is rounded to nearest integer
2031           */
2032          *params = IROUND(obj->Sampler.MaxAnisotropy);
2033          break;
2034       case GL_GENERATE_MIPMAP_SGIS:
2035          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
2036             goto invalid_pname;
2037
2038          *params = (GLint) obj->GenerateMipmap;
2039          break;
2040       case GL_TEXTURE_COMPARE_MODE_ARB:
2041          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2042              && !_mesa_is_gles3(ctx))
2043             goto invalid_pname;
2044          *params = (GLint) obj->Sampler.CompareMode;
2045          break;
2046       case GL_TEXTURE_COMPARE_FUNC_ARB:
2047          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2048              && !_mesa_is_gles3(ctx))
2049             goto invalid_pname;
2050          *params = (GLint) obj->Sampler.CompareFunc;
2051          break;
2052       case GL_DEPTH_TEXTURE_MODE_ARB:
2053          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2054             goto invalid_pname;
2055          *params = (GLint) obj->DepthMode;
2056          break;
2057       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2058          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
2059             goto invalid_pname;
2060          *params = (GLint)
2061             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2062          break;
2063       case GL_TEXTURE_LOD_BIAS:
2064          if (_mesa_is_gles(ctx))
2065             goto invalid_pname;
2066
2067          /* GL spec 'Data Conversions' section specifies that floating-point
2068           * value in integer Get function is rounded to nearest integer
2069           */
2070          *params = IROUND(obj->Sampler.LodBias);
2071          break;
2072       case GL_TEXTURE_CROP_RECT_OES:
2073          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2074             goto invalid_pname;
2075
2076          params[0] = obj->CropRect[0];
2077          params[1] = obj->CropRect[1];
2078          params[2] = obj->CropRect[2];
2079          params[3] = obj->CropRect[3];
2080          break;
2081       case GL_TEXTURE_SWIZZLE_R_EXT:
2082       case GL_TEXTURE_SWIZZLE_G_EXT:
2083       case GL_TEXTURE_SWIZZLE_B_EXT:
2084       case GL_TEXTURE_SWIZZLE_A_EXT:
2085          if ((!_mesa_is_desktop_gl(ctx)
2086               || !ctx->Extensions.EXT_texture_swizzle)
2087              && !_mesa_is_gles3(ctx))
2088             goto invalid_pname;
2089          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2090          break;
2091
2092       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2093          if ((!_mesa_is_desktop_gl(ctx)
2094               || !ctx->Extensions.EXT_texture_swizzle)
2095              && !_mesa_is_gles3(ctx))
2096             goto invalid_pname;
2097          COPY_4V(params, obj->Swizzle);
2098          break;
2099
2100       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2101          if (!_mesa_is_desktop_gl(ctx)
2102              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2103             goto invalid_pname;
2104          *params = (GLint) obj->Sampler.CubeMapSeamless;
2105          break;
2106
2107       case GL_TEXTURE_IMMUTABLE_FORMAT:
2108          *params = (GLint) obj->Immutable;
2109          break;
2110
2111       case GL_TEXTURE_IMMUTABLE_LEVELS:
2112          if (_mesa_is_gles3(ctx) ||
2113              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
2114             *params = obj->ImmutableLevels;
2115          else
2116             goto invalid_pname;
2117          break;
2118
2119       case GL_TEXTURE_VIEW_MIN_LEVEL:
2120          if (!ctx->Extensions.ARB_texture_view)
2121             goto invalid_pname;
2122          *params = (GLint) obj->MinLevel;
2123          break;
2124
2125       case GL_TEXTURE_VIEW_NUM_LEVELS:
2126          if (!ctx->Extensions.ARB_texture_view)
2127             goto invalid_pname;
2128          *params = (GLint) obj->NumLevels;
2129          break;
2130
2131       case GL_TEXTURE_VIEW_MIN_LAYER:
2132          if (!ctx->Extensions.ARB_texture_view)
2133             goto invalid_pname;
2134          *params = (GLint) obj->MinLayer;
2135          break;
2136
2137       case GL_TEXTURE_VIEW_NUM_LAYERS:
2138          if (!ctx->Extensions.ARB_texture_view)
2139             goto invalid_pname;
2140          *params = (GLint) obj->NumLayers;
2141          break;
2142
2143       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2144          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2145             goto invalid_pname;
2146          *params = obj->RequiredTextureImageUnits;
2147          break;
2148
2149       case GL_TEXTURE_SRGB_DECODE_EXT:
2150          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2151             goto invalid_pname;
2152          *params = obj->Sampler.sRGBDecode;
2153          break;
2154
2155       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2156          if (!ctx->Extensions.ARB_shader_image_load_store)
2157             goto invalid_pname;
2158          *params = obj->ImageFormatCompatibilityType;
2159          break;
2160
2161       case GL_TEXTURE_TARGET:
2162          if (ctx->API != API_OPENGL_CORE)
2163             goto invalid_pname;
2164          *params = (GLint) obj->Target;
2165          break;
2166
2167       default:
2168          goto invalid_pname;
2169    }
2170
2171    /* no error if we get here */
2172    _mesa_unlock_texture(ctx, obj);
2173    return;
2174
2175 invalid_pname:
2176    _mesa_unlock_texture(ctx, obj);
2177    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameteriv(pname=0x%x)",
2178                dsa ? "ture" : "", pname);
2179 }
2180
2181 static void
2182 get_tex_parameterIiv(struct gl_context *ctx,
2183                      struct gl_texture_object *obj,
2184                      GLenum pname, GLint *params, bool dsa)
2185 {
2186    switch (pname) {
2187    case GL_TEXTURE_BORDER_COLOR:
2188       COPY_4V(params, obj->Sampler.BorderColor.i);
2189       break;
2190    default:
2191       get_tex_parameteriv(ctx, obj, pname, params, dsa);
2192    }
2193 }
2194
2195 static void
2196 get_tex_parameterIuiv(struct gl_context *ctx,
2197                       struct gl_texture_object *obj,
2198                       GLenum pname, GLuint *params, bool dsa)
2199 {
2200    switch (pname) {
2201    case GL_TEXTURE_BORDER_COLOR:
2202       COPY_4V(params, obj->Sampler.BorderColor.i);
2203       break;
2204    default:
2205       {
2206          GLint ip[4];
2207          get_tex_parameteriv(ctx, obj, pname, ip, dsa);
2208          params[0] = ip[0];
2209          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
2210              pname == GL_TEXTURE_CROP_RECT_OES) {
2211             params[1] = ip[1];
2212             params[2] = ip[2];
2213             params[3] = ip[3];
2214          }
2215       }
2216    }
2217 }
2218
2219 void GLAPIENTRY
2220 _mesa_GetTexParameterfv(GLenum target, GLenum pname, GLfloat *params)
2221 {
2222    struct gl_texture_object *obj;
2223    GET_CURRENT_CONTEXT(ctx);
2224
2225    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2226    if (!obj)
2227       return;
2228
2229    get_tex_parameterfv(ctx, obj, pname, params, false);
2230 }
2231
2232 void GLAPIENTRY
2233 _mesa_GetTexParameteriv(GLenum target, GLenum pname, GLint *params)
2234 {
2235    struct gl_texture_object *obj;
2236    GET_CURRENT_CONTEXT(ctx);
2237
2238    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2239    if (!obj)
2240       return;
2241
2242    get_tex_parameteriv(ctx, obj, pname, params, false);
2243 }
2244
2245 /** New in GL 3.0 */
2246 void GLAPIENTRY
2247 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
2248 {
2249    struct gl_texture_object *texObj;
2250    GET_CURRENT_CONTEXT(ctx);
2251
2252    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2253    if (!texObj)
2254       return;
2255
2256    get_tex_parameterIiv(ctx, texObj, pname, params, false);
2257 }
2258
2259
2260 /** New in GL 3.0 */
2261 void GLAPIENTRY
2262 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
2263 {
2264    struct gl_texture_object *texObj;
2265    GET_CURRENT_CONTEXT(ctx);
2266
2267    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2268    if (!texObj)
2269       return;
2270
2271    get_tex_parameterIuiv(ctx, texObj, pname, params, false);
2272 }
2273
2274
2275 void GLAPIENTRY
2276 _mesa_GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat *params)
2277 {
2278    struct gl_texture_object *obj;
2279    GET_CURRENT_CONTEXT(ctx);
2280
2281    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2282    if (!obj) {
2283       /* User passed a non-generated name. */
2284       _mesa_error(ctx, GL_INVALID_OPERATION,
2285                   "glGetTextureParameterfv(texture)");
2286       return;
2287    }
2288
2289    get_tex_parameterfv(ctx, obj, pname, params, true);
2290 }
2291
2292 void GLAPIENTRY
2293 _mesa_GetTextureParameteriv(GLuint texture, GLenum pname, GLint *params)
2294 {
2295    struct gl_texture_object *obj;
2296    GET_CURRENT_CONTEXT(ctx);
2297
2298    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2299    if (!obj) {
2300       /* User passed a non-generated name. */
2301       _mesa_error(ctx, GL_INVALID_OPERATION,
2302                   "glGetTextureParameteriv(texture)");
2303       return;
2304    }
2305
2306    get_tex_parameteriv(ctx, obj, pname, params, true);
2307 }
2308
2309 void GLAPIENTRY
2310 _mesa_GetTextureParameterIiv(GLuint texture, GLenum pname, GLint *params)
2311 {
2312    struct gl_texture_object *texObj;
2313    GET_CURRENT_CONTEXT(ctx);
2314
2315    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2316    if (!texObj) {
2317       /* User passed a non-generated name. */
2318       _mesa_error(ctx, GL_INVALID_OPERATION,
2319                   "glGetTextureParameterIiv(texture)");
2320       return;
2321    }
2322
2323    get_tex_parameterIiv(ctx, texObj, pname, params, true);
2324 }
2325
2326
2327 void GLAPIENTRY
2328 _mesa_GetTextureParameterIuiv(GLuint texture, GLenum pname, GLuint *params)
2329 {
2330    struct gl_texture_object *texObj;
2331    GET_CURRENT_CONTEXT(ctx);
2332
2333    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2334    if (!texObj) {
2335       /* User passed a non-generated name. */
2336       _mesa_error(ctx, GL_INVALID_OPERATION,
2337                   "glGetTextureParameterIuiv(texture)");
2338       return;
2339    }
2340
2341    get_tex_parameterIuiv(ctx, texObj, pname, params, true);
2342 }