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 (_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_enum_to_string(pname));
 614    return GL_FALSE;
 615
 616 invalid_param:
 617    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(param=%s)",
 618                suffix, _mesa_enum_to_string(params[0]));
 619    return GL_FALSE;
 620
 621 invalid_operation:
 622    _mesa_error(ctx, GL_INVALID_OPERATION, "glTex%sParameter(pname=%s)",
 623                suffix, _mesa_enum_to_string(pname));
 624    return GL_FALSE;
 625
 626 invalid_enum:
 627    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 628                suffix, _mesa_enum_to_string(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] < 1.0F) {
 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 (ctx->API == API_OPENGLES ||
 721           !ctx->Extensions.ARB_texture_border_clamp)
 722          goto invalid_pname;
 723
 724       if (!target_allows_setting_sampler_parameters(texObj->Target))
 725          goto invalid_enum;
 726
 727       flush(ctx);
 728       /* ARB_texture_float disables clamping */
 729       if (ctx->Extensions.ARB_texture_float) {
 730          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 731          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 732          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 733          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 734       } else {
 735          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 736          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 737          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 738          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 739       }
 740       return GL_TRUE;
 741
 742    default:
 743       goto invalid_pname;
 744    }
 745    return GL_FALSE;
 746
 747 invalid_pname:
 748    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 749                suffix, _mesa_enum_to_string(pname));
 750    return GL_FALSE;
 751
 752 invalid_enum:
 753    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 754                suffix, _mesa_enum_to_string(pname));
 755    return GL_FALSE;
 756 }
 757
 758
 759 void
 760 _mesa_texture_parameterf(struct gl_context *ctx,
 761                          struct gl_texture_object *texObj,
 762                          GLenum pname, GLfloat param, bool dsa)
 763 {
 764    GLboolean need_update;
 765
 766    switch (pname) {
 767    case GL_TEXTURE_MIN_FILTER:
 768    case GL_TEXTURE_MAG_FILTER:
 769    case GL_TEXTURE_WRAP_S:
 770    case GL_TEXTURE_WRAP_T:
 771    case GL_TEXTURE_WRAP_R:
 772    case GL_TEXTURE_BASE_LEVEL:
 773    case GL_TEXTURE_MAX_LEVEL:
 774    case GL_GENERATE_MIPMAP_SGIS:
 775    case GL_TEXTURE_COMPARE_MODE_ARB:
 776    case GL_TEXTURE_COMPARE_FUNC_ARB:
 777    case GL_DEPTH_TEXTURE_MODE_ARB:
 778    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 779    case GL_TEXTURE_SRGB_DECODE_EXT:
 780    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 781    case GL_TEXTURE_SWIZZLE_R_EXT:
 782    case GL_TEXTURE_SWIZZLE_G_EXT:
 783    case GL_TEXTURE_SWIZZLE_B_EXT:
 784    case GL_TEXTURE_SWIZZLE_A_EXT:
 785       {
 786          GLint p[4];
 787          p[0] = (param > 0) ?
 788                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 789                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 790
 791          p[1] = p[2] = p[3] = 0;
 792          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 793       }
 794       break;
 795    case GL_TEXTURE_BORDER_COLOR:
 796    case GL_TEXTURE_SWIZZLE_RGBA:
 797       _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameterf(non-scalar pname)",
 798                   dsa ? "ture" : "");
 799       return;
 800    default:
 801       {
 802          /* this will generate an error if pname is illegal */
 803          GLfloat p[4];
 804          p[0] = param;
 805          p[1] = p[2] = p[3] = 0.0F;
 806          need_update = set_tex_parameterf(ctx, texObj, pname, p, dsa);
 807       }
 808    }
 809
 810    if (ctx->Driver.TexParameter && need_update) {
 811       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 812    }
 813 }
 814
 815
 816 void
 817 _mesa_texture_parameterfv(struct gl_context *ctx,
 818                           struct gl_texture_object *texObj,
 819                           GLenum pname, const GLfloat *params, bool dsa)
 820 {
 821    GLboolean need_update;
 822    switch (pname) {
 823    case GL_TEXTURE_MIN_FILTER:
 824    case GL_TEXTURE_MAG_FILTER:
 825    case GL_TEXTURE_WRAP_S:
 826    case GL_TEXTURE_WRAP_T:
 827    case GL_TEXTURE_WRAP_R:
 828    case GL_TEXTURE_BASE_LEVEL:
 829    case GL_TEXTURE_MAX_LEVEL:
 830    case GL_GENERATE_MIPMAP_SGIS:
 831    case GL_TEXTURE_COMPARE_MODE_ARB:
 832    case GL_TEXTURE_COMPARE_FUNC_ARB:
 833    case GL_DEPTH_TEXTURE_MODE_ARB:
 834    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 835    case GL_TEXTURE_SRGB_DECODE_EXT:
 836    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 837       {
 838          /* convert float param to int */
 839          GLint p[4];
 840          p[0] = (GLint) params[0];
 841          p[1] = p[2] = p[3] = 0;
 842          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 843       }
 844       break;
 845    case GL_TEXTURE_CROP_RECT_OES:
 846       {
 847          /* convert float params to int */
 848          GLint iparams[4];
 849          iparams[0] = (GLint) params[0];
 850          iparams[1] = (GLint) params[1];
 851          iparams[2] = (GLint) params[2];
 852          iparams[3] = (GLint) params[3];
 853          need_update = set_tex_parameteri(ctx, texObj, pname, iparams, dsa);
 854       }
 855       break;
 856    case GL_TEXTURE_SWIZZLE_R_EXT:
 857    case GL_TEXTURE_SWIZZLE_G_EXT:
 858    case GL_TEXTURE_SWIZZLE_B_EXT:
 859    case GL_TEXTURE_SWIZZLE_A_EXT:
 860    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 861       {
 862          GLint p[4] = {0, 0, 0, 0};
 863          p[0] = (GLint) params[0];
 864          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 865             p[1] = (GLint) params[1];
 866             p[2] = (GLint) params[2];
 867             p[3] = (GLint) params[3];
 868          }
 869          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 870       }
 871       break;
 872    default:
 873       /* this will generate an error if pname is illegal */
 874       need_update = set_tex_parameterf(ctx, texObj, pname, params, dsa);
 875    }
 876
 877    if (ctx->Driver.TexParameter && need_update) {
 878       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 879    }
 880 }
 881
 882
 883 void
 884 _mesa_texture_parameteri(struct gl_context *ctx,
 885                          struct gl_texture_object *texObj,
 886                          GLenum pname, GLint param, bool dsa)
 887 {
 888    GLboolean need_update;
 889    switch (pname) {
 890    case GL_TEXTURE_MIN_LOD:
 891    case GL_TEXTURE_MAX_LOD:
 892    case GL_TEXTURE_PRIORITY:
 893    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 894    case GL_TEXTURE_LOD_BIAS:
 895    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 896       {
 897          GLfloat fparam[4];
 898          fparam[0] = (GLfloat) param;
 899          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 900          /* convert int param to float */
 901          need_update = set_tex_parameterf(ctx, texObj, pname, fparam, dsa);
 902       }
 903       break;
 904    case GL_TEXTURE_BORDER_COLOR:
 905    case GL_TEXTURE_SWIZZLE_RGBA:
 906       {
 907          _mesa_error(ctx, GL_INVALID_ENUM,
 908                      "glTex%sParameteri(non-scalar pname)",
 909                      dsa ? "ture" : "");
 910          return;
 911       }
 912    default:
 913       /* this will generate an error if pname is illegal */
 914       {
 915          GLint iparam[4];
 916          iparam[0] = param;
 917          iparam[1] = iparam[2] = iparam[3] = 0;
 918          need_update = set_tex_parameteri(ctx, texObj, pname, iparam, dsa);
 919       }
 920    }
 921
 922    if (ctx->Driver.TexParameter && need_update) {
 923       GLfloat fparam = (GLfloat) param;
 924       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 925    }
 926 }
 927
 928
 929 void
 930 _mesa_texture_parameteriv(struct gl_context *ctx,
 931                           struct gl_texture_object *texObj,
 932                           GLenum pname, const GLint *params, bool dsa)
 933 {
 934    GLboolean need_update;
 935
 936    switch (pname) {
 937    case GL_TEXTURE_BORDER_COLOR:
 938       {
 939          /* convert int params to float */
 940          GLfloat fparams[4];
 941          fparams[0] = INT_TO_FLOAT(params[0]);
 942          fparams[1] = INT_TO_FLOAT(params[1]);
 943          fparams[2] = INT_TO_FLOAT(params[2]);
 944          fparams[3] = INT_TO_FLOAT(params[3]);
 945          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 946       }
 947       break;
 948    case GL_TEXTURE_MIN_LOD:
 949    case GL_TEXTURE_MAX_LOD:
 950    case GL_TEXTURE_PRIORITY:
 951    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 952    case GL_TEXTURE_LOD_BIAS:
 953    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 954       {
 955          /* convert int param to float */
 956          GLfloat fparams[4];
 957          fparams[0] = (GLfloat) params[0];
 958          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 959          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 960       }
 961       break;
 962    default:
 963       /* this will generate an error if pname is illegal */
 964       need_update = set_tex_parameteri(ctx, texObj, pname, params, dsa);
 965    }
 966
 967    if (ctx->Driver.TexParameter && need_update) {
 968       GLfloat fparams[4];
 969       fparams[0] = INT_TO_FLOAT(params[0]);
 970       if (pname == GL_TEXTURE_BORDER_COLOR ||
 971           pname == GL_TEXTURE_CROP_RECT_OES) {
 972          fparams[1] = INT_TO_FLOAT(params[1]);
 973          fparams[2] = INT_TO_FLOAT(params[2]);
 974          fparams[3] = INT_TO_FLOAT(params[3]);
 975       }
 976       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 977    }
 978 }
 979
 980 void
 981 _mesa_texture_parameterIiv(struct gl_context *ctx,
 982                            struct gl_texture_object *texObj,
 983                            GLenum pname, const GLint *params, bool dsa)
 984 {
 985    switch (pname) {
 986    case GL_TEXTURE_BORDER_COLOR:
 987       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 988       /* set the integer-valued border color */
 989       COPY_4V(texObj->Sampler.BorderColor.i, params);
 990       break;
 991    default:
 992       _mesa_texture_parameteriv(ctx, texObj, pname, params, dsa);
 993       break;
 994    }
 995    /* XXX no driver hook for TexParameterIiv() yet */
 996 }
 997
 998 void
 999 _mesa_texture_parameterIuiv(struct gl_context *ctx,
1000                             struct gl_texture_object *texObj,
1001                             GLenum pname, const GLuint *params, bool dsa)
1002 {
1003    switch (pname) {
1004    case GL_TEXTURE_BORDER_COLOR:
1005       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1006       /* set the unsigned integer-valued border color */
1007       COPY_4V(texObj->Sampler.BorderColor.ui, params);
1008       break;
1009    default:
1010       _mesa_texture_parameteriv(ctx, texObj, pname, (const GLint *) params,
1011                                 dsa);
1012       break;
1013    }
1014    /* XXX no driver hook for TexParameterIuiv() yet */
1015 }
1016
1017 void GLAPIENTRY
1018 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
1019 {
1020    struct gl_texture_object *texObj;
1021    GET_CURRENT_CONTEXT(ctx);
1022
1023    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1024    if (!texObj)
1025       return;
1026
1027    _mesa_texture_parameterf(ctx, texObj, pname, param, false);
1028 }
1029
1030 void GLAPIENTRY
1031 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
1032 {
1033    struct gl_texture_object *texObj;
1034    GET_CURRENT_CONTEXT(ctx);
1035
1036    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1037    if (!texObj)
1038       return;
1039
1040    _mesa_texture_parameterfv(ctx, texObj, pname, params, false);
1041 }
1042
1043 void GLAPIENTRY
1044 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
1045 {
1046    struct gl_texture_object *texObj;
1047    GET_CURRENT_CONTEXT(ctx);
1048
1049    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1050    if (!texObj)
1051       return;
1052
1053    _mesa_texture_parameteri(ctx, texObj, pname, param, false);
1054 }
1055
1056 void GLAPIENTRY
1057 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
1058 {
1059    struct gl_texture_object *texObj;
1060    GET_CURRENT_CONTEXT(ctx);
1061
1062    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1063    if (!texObj)
1064       return;
1065
1066    _mesa_texture_parameteriv(ctx, texObj, pname, params, false);
1067 }
1068
1069 /**
1070  * Set tex parameter to integer value(s).  Primarily intended to set
1071  * integer-valued texture border color (for integer-valued textures).
1072  * New in GL 3.0.
1073  */
1074 void GLAPIENTRY
1075 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
1076 {
1077    struct gl_texture_object *texObj;
1078    GET_CURRENT_CONTEXT(ctx);
1079
1080    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1081    if (!texObj)
1082       return;
1083
1084    _mesa_texture_parameterIiv(ctx, texObj, pname, params, false);
1085 }
1086
1087 /**
1088  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
1089  * uint-valued texture border color (for integer-valued textures).
1090  * New in GL 3.0
1091  */
1092 void GLAPIENTRY
1093 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
1094 {
1095    struct gl_texture_object *texObj;
1096    GET_CURRENT_CONTEXT(ctx);
1097
1098    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1099    if (!texObj)
1100       return;
1101
1102    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, false);
1103 }
1104
1105
1106 void GLAPIENTRY
1107 _mesa_TextureParameterfv(GLuint texture, GLenum pname, const GLfloat *params)
1108 {
1109    struct gl_texture_object *texObj;
1110    GET_CURRENT_CONTEXT(ctx);
1111
1112    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1113    if (!texObj) {
1114       /* User passed a non-generated name. */
1115       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterfv(texture)");
1116       return;
1117    }
1118
1119    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1120 }
1121
1122 void GLAPIENTRY
1123 _mesa_TextureParameterf(GLuint texture, GLenum pname, GLfloat param)
1124 {
1125    struct gl_texture_object *texObj;
1126    GET_CURRENT_CONTEXT(ctx);
1127
1128    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1129    if (!texObj) {
1130       /* User passed a non-generated name. */
1131       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterf(texture)");
1132       return;
1133    }
1134
1135    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1136 }
1137
1138 void GLAPIENTRY
1139 _mesa_TextureParameteri(GLuint texture, GLenum pname, GLint param)
1140 {
1141    struct gl_texture_object *texObj;
1142    GET_CURRENT_CONTEXT(ctx);
1143
1144    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1145    if (!texObj) {
1146       /* User passed a non-generated name. */
1147       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteri(texture)");
1148       return;
1149    }
1150
1151    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1152 }
1153
1154 void GLAPIENTRY
1155 _mesa_TextureParameteriv(GLuint texture, GLenum pname,
1156                          const GLint *params)
1157 {
1158    struct gl_texture_object *texObj;
1159    GET_CURRENT_CONTEXT(ctx);
1160
1161    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1162    if (!texObj) {
1163       /* User passed a non-generated name. */
1164       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteriv(texture)");
1165       return;
1166    }
1167
1168    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1169 }
1170
1171
1172 void GLAPIENTRY
1173 _mesa_TextureParameterIiv(GLuint texture, GLenum pname, const GLint *params)
1174 {
1175    struct gl_texture_object *texObj;
1176    GET_CURRENT_CONTEXT(ctx);
1177
1178    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1179    if (!texObj) {
1180       /* User passed a non-generated name. */
1181       _mesa_error(ctx, GL_INVALID_OPERATION,
1182                   "glTextureParameterIiv(texture)");
1183       return;
1184    }
1185
1186    _mesa_texture_parameterIiv(ctx, texObj, pname, params, true);
1187 }
1188
1189 void GLAPIENTRY
1190 _mesa_TextureParameterIuiv(GLuint texture, GLenum pname, const GLuint *params)
1191 {
1192    struct gl_texture_object *texObj;
1193    GET_CURRENT_CONTEXT(ctx);
1194
1195    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1196    if (!texObj) {
1197       /* User passed a non-generated name. */
1198       _mesa_error(ctx, GL_INVALID_OPERATION,
1199                   "glTextureParameterIuiv(texture)");
1200       return;
1201    }
1202
1203    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, true);
1204 }
1205
1206 static GLboolean
1207 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target,
1208                                      bool dsa)
1209 {
1210    /* Common targets for desktop GL and GLES 3.1. */
1211    switch (target) {
1212    case GL_TEXTURE_2D:
1213    case GL_TEXTURE_3D:
1214       return GL_TRUE;
1215    case GL_TEXTURE_2D_ARRAY_EXT:
1216       return ctx->Extensions.EXT_texture_array;
1217    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1218    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1219    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1220    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1221    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1222    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1223       return ctx->Extensions.ARB_texture_cube_map;
1224    case GL_TEXTURE_2D_MULTISAMPLE:
1225    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1226       return ctx->Extensions.ARB_texture_multisample;
1227    }
1228
1229    if (!_mesa_is_desktop_gl(ctx))
1230       return GL_FALSE;
1231
1232    /* Rest of the desktop GL targets. */
1233    switch (target) {
1234    case GL_TEXTURE_1D:
1235    case GL_PROXY_TEXTURE_1D:
1236    case GL_PROXY_TEXTURE_2D:
1237    case GL_PROXY_TEXTURE_3D:
1238       return GL_TRUE;
1239    case GL_PROXY_TEXTURE_CUBE_MAP:
1240       return ctx->Extensions.ARB_texture_cube_map;
1241    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1242    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1243       return ctx->Extensions.ARB_texture_cube_map_array;
1244    case GL_TEXTURE_RECTANGLE_NV:
1245    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1246       return ctx->Extensions.NV_texture_rectangle;
1247    case GL_TEXTURE_1D_ARRAY_EXT:
1248    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1249    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1250       return ctx->Extensions.EXT_texture_array;
1251    case GL_TEXTURE_BUFFER:
1252       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1253        * but not in earlier versions that expose ARB_texture_buffer_object.
1254        *
1255        * From the ARB_texture_buffer_object spec:
1256        * "(7) Do buffer textures support texture parameters (TexParameter) or
1257        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1258        *
1259        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1260        *    explicit error language for any of these cases.  That is because
1261        *    each of the functions enumerate the set of valid <target>
1262        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1263        *    these cases means that target is not legal, and an INVALID_ENUM
1264        *    error should be generated."
1265        *
1266        * From the OpenGL 3.1 spec:
1267        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1268        */
1269       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1270    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1271    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1272       return ctx->Extensions.ARB_texture_multisample;
1273
1274    /*  This is a valid target for dsa, but the OpenGL 4.5 core spec
1275     *  (30.10.2014) Section 8.11 Texture Queries says:
1276     *       "For GetTextureLevelParameter* only, texture may also be a cube
1277     *       map texture object.  In this case the query is always performed
1278     *       for face zero (the TEXTURE_CUBE_MAP_POSITIVE_X face), since there
1279     *       is no way to specify another face."
1280     */
1281    case GL_TEXTURE_CUBE_MAP:
1282       return dsa;
1283    default:
1284       return GL_FALSE;
1285    }
1286 }
1287
1288
1289 static void
1290 get_tex_level_parameter_image(struct gl_context *ctx,
1291                               const struct gl_texture_object *texObj,
1292                               GLenum target, GLint level,
1293                               GLenum pname, GLint *params,
1294                               bool dsa)
1295 {
1296    const struct gl_texture_image *img = NULL;
1297    struct gl_texture_image dummy_image;
1298    mesa_format texFormat;
1299    const char *suffix = dsa ? "ture" : "";
1300
1301    img = _mesa_select_tex_image(texObj, target, level);
1302    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1303       /* In case of undefined texture image return the default values.
1304        *
1305        * From OpenGL 4.0 spec, page 398:
1306        *    "The initial internal format of a texel array is RGBA
1307        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1308        *     use TEXTURE_INTERNAL_FORMAT."
1309        */
1310       memset(&dummy_image, 0, sizeof(dummy_image));
1311       dummy_image.TexFormat = MESA_FORMAT_NONE;
1312       dummy_image.InternalFormat = GL_RGBA;
1313       dummy_image._BaseFormat = GL_NONE;
1314       dummy_image.FixedSampleLocations = GL_TRUE;
1315
1316       img = &dummy_image;
1317    }
1318
1319    texFormat = img->TexFormat;
1320
1321    switch (pname) {
1322       case GL_TEXTURE_WIDTH:
1323          *params = img->Width;
1324          break;
1325       case GL_TEXTURE_HEIGHT:
1326          *params = img->Height;
1327          break;
1328       case GL_TEXTURE_DEPTH:
1329          *params = img->Depth;
1330          break;
1331       case GL_TEXTURE_INTERNAL_FORMAT:
1332          if (_mesa_is_format_compressed(texFormat)) {
1333             /* need to return the actual compressed format */
1334             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1335          }
1336          else {
1337             /* If the true internal format is not compressed but the user
1338              * requested a generic compressed format, we have to return the
1339              * generic base format that matches.
1340              *
1341              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1342              *
1343              *     "If no specific compressed format is available,
1344              *     internalformat is instead replaced by the corresponding base
1345              *     internal format."
1346              *
1347              * Otherwise just return the user's requested internal format
1348              */
1349             const GLenum f =
1350                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1351
1352             *params = (f != 0) ? f : img->InternalFormat;
1353          }
1354          break;
1355       case GL_TEXTURE_BORDER:
1356          if (ctx->API != API_OPENGL_COMPAT)
1357             goto invalid_pname;
1358          *params = img->Border;
1359          break;
1360       case GL_TEXTURE_RED_SIZE:
1361       case GL_TEXTURE_GREEN_SIZE:
1362       case GL_TEXTURE_BLUE_SIZE:
1363       case GL_TEXTURE_ALPHA_SIZE:
1364          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1365             *params = _mesa_get_format_bits(texFormat, pname);
1366          else
1367             *params = 0;
1368          break;
1369       case GL_TEXTURE_INTENSITY_SIZE:
1370       case GL_TEXTURE_LUMINANCE_SIZE:
1371          if (ctx->API != API_OPENGL_COMPAT)
1372             goto invalid_pname;
1373          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1374             *params = _mesa_get_format_bits(texFormat, pname);
1375             if (*params == 0) {
1376                /* intensity or luminance is probably stored as RGB[A] */
1377                *params = MIN2(_mesa_get_format_bits(texFormat,
1378                                                     GL_TEXTURE_RED_SIZE),
1379                               _mesa_get_format_bits(texFormat,
1380                                                     GL_TEXTURE_GREEN_SIZE));
1381             }
1382          }
1383          else {
1384             *params = 0;
1385          }
1386          break;
1387       case GL_TEXTURE_DEPTH_SIZE_ARB:
1388          if (!ctx->Extensions.ARB_depth_texture)
1389             goto invalid_pname;
1390          *params = _mesa_get_format_bits(texFormat, pname);
1391          break;
1392       case GL_TEXTURE_STENCIL_SIZE:
1393          *params = _mesa_get_format_bits(texFormat, pname);
1394          break;
1395       case GL_TEXTURE_SHARED_SIZE:
1396          if (ctx->Version < 30 &&
1397              !ctx->Extensions.EXT_texture_shared_exponent)
1398             goto invalid_pname;
1399          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1400          break;
1401
1402       /* GL_ARB_texture_compression */
1403       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1404          if (_mesa_is_format_compressed(texFormat) &&
1405              !_mesa_is_proxy_texture(target)) {
1406             *params = _mesa_format_image_size(texFormat, img->Width,
1407                                               img->Height, img->Depth);
1408     }
1409     else {
1410        _mesa_error(ctx, GL_INVALID_OPERATION,
1411                    "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1412                    _mesa_enum_to_string(pname));
1413     }
1414          break;
1415       case GL_TEXTURE_COMPRESSED:
1416          *params = (GLint) _mesa_is_format_compressed(texFormat);
1417          break;
1418
1419       /* GL_ARB_texture_float */
1420       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1421       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1422          if (ctx->API != API_OPENGL_COMPAT)
1423             goto invalid_pname;
1424          /* FALLTHROUGH */
1425       case GL_TEXTURE_RED_TYPE_ARB:
1426       case GL_TEXTURE_GREEN_TYPE_ARB:
1427       case GL_TEXTURE_BLUE_TYPE_ARB:
1428       case GL_TEXTURE_ALPHA_TYPE_ARB:
1429       case GL_TEXTURE_DEPTH_TYPE_ARB:
1430          if (!ctx->Extensions.ARB_texture_float)
1431             goto invalid_pname;
1432          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1433             *params = _mesa_get_format_datatype(texFormat);
1434          else
1435             *params = GL_NONE;
1436          break;
1437
1438       /* GL_ARB_texture_multisample */
1439       case GL_TEXTURE_SAMPLES:
1440          if (!ctx->Extensions.ARB_texture_multisample)
1441             goto invalid_pname;
1442          *params = img->NumSamples;
1443          break;
1444
1445       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1446          if (!ctx->Extensions.ARB_texture_multisample)
1447             goto invalid_pname;
1448          *params = img->FixedSampleLocations;
1449          break;
1450
1451       default:
1452          goto invalid_pname;
1453    }
1454
1455    /* no error if we get here */
1456    return;
1457
1458 invalid_pname:
1459    _mesa_error(ctx, GL_INVALID_ENUM,
1460                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1461                _mesa_enum_to_string(pname));
1462 }
1463
1464
1465 static void
1466 get_tex_level_parameter_buffer(struct gl_context *ctx,
1467                                const struct gl_texture_object *texObj,
1468                                GLenum pname, GLint *params, bool dsa)
1469 {
1470    const struct gl_buffer_object *bo = texObj->BufferObject;
1471    mesa_format texFormat = texObj->_BufferObjectFormat;
1472    GLenum internalFormat = texObj->BufferObjectFormat;
1473    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1474    const char *suffix = dsa ? "ture" : "";
1475
1476    if (!bo) {
1477       /* undefined texture buffer object */
1478       *params = pname == GL_TEXTURE_COMPONENTS ? 1 : 0;
1479       return;
1480    }
1481
1482    switch (pname) {
1483       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1484          *params = bo->Name;
1485          break;
1486       case GL_TEXTURE_WIDTH:
1487          *params = bo->Size;
1488          break;
1489       case GL_TEXTURE_HEIGHT:
1490       case GL_TEXTURE_DEPTH:
1491       case GL_TEXTURE_BORDER:
1492       case GL_TEXTURE_SHARED_SIZE:
1493       case GL_TEXTURE_COMPRESSED:
1494          *params = 0;
1495          break;
1496       case GL_TEXTURE_INTERNAL_FORMAT:
1497          *params = internalFormat;
1498          break;
1499       case GL_TEXTURE_RED_SIZE:
1500       case GL_TEXTURE_GREEN_SIZE:
1501       case GL_TEXTURE_BLUE_SIZE:
1502       case GL_TEXTURE_ALPHA_SIZE:
1503          if (_mesa_base_format_has_channel(baseFormat, pname))
1504             *params = _mesa_get_format_bits(texFormat, pname);
1505          else
1506             *params = 0;
1507          break;
1508       case GL_TEXTURE_INTENSITY_SIZE:
1509       case GL_TEXTURE_LUMINANCE_SIZE:
1510          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1511             *params = _mesa_get_format_bits(texFormat, pname);
1512             if (*params == 0) {
1513                /* intensity or luminance is probably stored as RGB[A] */
1514                *params = MIN2(_mesa_get_format_bits(texFormat,
1515                                                     GL_TEXTURE_RED_SIZE),
1516                               _mesa_get_format_bits(texFormat,
1517                                                     GL_TEXTURE_GREEN_SIZE));
1518             }
1519          } else {
1520             *params = 0;
1521          }
1522          break;
1523       case GL_TEXTURE_DEPTH_SIZE_ARB:
1524       case GL_TEXTURE_STENCIL_SIZE_EXT:
1525          *params = _mesa_get_format_bits(texFormat, pname);
1526          break;
1527
1528       /* GL_ARB_texture_buffer_range */
1529       case GL_TEXTURE_BUFFER_OFFSET:
1530          if (!ctx->Extensions.ARB_texture_buffer_range)
1531             goto invalid_pname;
1532          *params = texObj->BufferOffset;
1533          break;
1534       case GL_TEXTURE_BUFFER_SIZE:
1535          if (!ctx->Extensions.ARB_texture_buffer_range)
1536             goto invalid_pname;
1537          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1538          break;
1539
1540       /* GL_ARB_texture_compression */
1541       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1542          /* Always illegal for GL_TEXTURE_BUFFER */
1543          _mesa_error(ctx, GL_INVALID_OPERATION,
1544                      "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1545                      _mesa_enum_to_string(pname));
1546          break;
1547
1548       /* GL_ARB_texture_float */
1549       case GL_TEXTURE_RED_TYPE_ARB:
1550       case GL_TEXTURE_GREEN_TYPE_ARB:
1551       case GL_TEXTURE_BLUE_TYPE_ARB:
1552       case GL_TEXTURE_ALPHA_TYPE_ARB:
1553       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1554       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1555       case GL_TEXTURE_DEPTH_TYPE_ARB:
1556          if (!ctx->Extensions.ARB_texture_float)
1557             goto invalid_pname;
1558          if (_mesa_base_format_has_channel(baseFormat, pname))
1559             *params = _mesa_get_format_datatype(texFormat);
1560          else
1561             *params = GL_NONE;
1562          break;
1563
1564       default:
1565          goto invalid_pname;
1566    }
1567
1568    /* no error if we get here */
1569    return;
1570
1571 invalid_pname:
1572    _mesa_error(ctx, GL_INVALID_ENUM,
1573                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1574                _mesa_enum_to_string(pname));
1575 }
1576
1577 static bool
1578 valid_tex_level_parameteriv_target(struct gl_context *ctx, GLenum target,
1579                                    bool dsa)
1580 {
1581    const char *suffix = dsa ? "ture" : "";
1582    if (!legal_get_tex_level_parameter_target(ctx, target, dsa)) {
1583       _mesa_error(ctx, GL_INVALID_ENUM,
1584                   "glGetTex%sLevelParameter[if]v(target=%s)", suffix,
1585                   _mesa_enum_to_string(target));
1586       return false;
1587    }
1588    return true;
1589 }
1590
1591 /**
1592  * This isn't exposed to the rest of the driver because it is a part of the
1593  * OpenGL API that is rarely used.
1594  */
1595 static void
1596 get_tex_level_parameteriv(struct gl_context *ctx,
1597                           struct gl_texture_object *texObj,
1598                           GLenum target, GLint level,
1599                           GLenum pname, GLint *params,
1600                           bool dsa)
1601 {
1602    GLint maxLevels;
1603    const char *suffix = dsa ? "ture" : "";
1604
1605    /* Check for errors */
1606    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1607       _mesa_error(ctx, GL_INVALID_OPERATION,
1608                   "glGetTex%sLevelParameter[if]v("
1609                   "current unit >= max combined texture units)", suffix);
1610       return;
1611    }
1612
1613    maxLevels = _mesa_max_texture_levels(ctx, target);
1614    assert(maxLevels != 0);
1615
1616    if (level < 0 || level >= maxLevels) {
1617       _mesa_error(ctx, GL_INVALID_VALUE,
1618                   "glGetTex%sLevelParameter[if]v(level out of range)", suffix);
1619       return;
1620    }
1621
1622    /* Get the level parameter */
1623    if (target == GL_TEXTURE_BUFFER) {
1624       get_tex_level_parameter_buffer(ctx, texObj, pname, params, dsa);
1625    }
1626    else {
1627       get_tex_level_parameter_image(ctx, texObj, target,
1628                                     level, pname, params, dsa);
1629    }
1630 }
1631
1632 void GLAPIENTRY
1633 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1634                               GLenum pname, GLfloat *params )
1635 {
1636    struct gl_texture_object *texObj;
1637    GLint iparam;
1638    GET_CURRENT_CONTEXT(ctx);
1639
1640    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1641       return;
1642
1643    texObj = _mesa_get_current_tex_object(ctx, target);
1644    if (!texObj)
1645       return;
1646
1647    get_tex_level_parameteriv(ctx, texObj, target, level,
1648                              pname, &iparam, false);
1649
1650    *params = (GLfloat) iparam;
1651 }
1652
1653 void GLAPIENTRY
1654 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1655                               GLenum pname, GLint *params )
1656 {
1657    struct gl_texture_object *texObj;
1658    GET_CURRENT_CONTEXT(ctx);
1659
1660    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1661       return;
1662
1663    texObj = _mesa_get_current_tex_object(ctx, target);
1664    if (!texObj)
1665       return;
1666
1667    get_tex_level_parameteriv(ctx, texObj, target, level,
1668                              pname, params, false);
1669 }
1670
1671 void GLAPIENTRY
1672 _mesa_GetTextureLevelParameterfv(GLuint texture, GLint level,
1673                                  GLenum pname, GLfloat *params)
1674 {
1675    struct gl_texture_object *texObj;
1676    GLint iparam;
1677    GET_CURRENT_CONTEXT(ctx);
1678
1679    texObj = _mesa_lookup_texture_err(ctx, texture,
1680                                      "glGetTextureLevelParameterfv");
1681    if (!texObj)
1682       return;
1683
1684    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1685       return;
1686
1687    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1688                              pname, &iparam, true);
1689
1690    *params = (GLfloat) iparam;
1691 }
1692
1693 void GLAPIENTRY
1694 _mesa_GetTextureLevelParameteriv(GLuint texture, GLint level,
1695                                  GLenum pname, GLint *params)
1696 {
1697    struct gl_texture_object *texObj;
1698    GET_CURRENT_CONTEXT(ctx);
1699
1700    texObj = _mesa_lookup_texture_err(ctx, texture,
1701                                      "glGetTextureLevelParameteriv");
1702    if (!texObj)
1703       return;
1704
1705    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1706       return;
1707
1708    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1709                              pname, params, true);
1710 }
1711
1712 /**
1713  * This isn't exposed to the rest of the driver because it is a part of the
1714  * OpenGL API that is rarely used.
1715  */
1716 static void
1717 get_tex_parameterfv(struct gl_context *ctx,
1718                     struct gl_texture_object *obj,
1719                     GLenum pname, GLfloat *params, bool dsa)
1720 {
1721    _mesa_lock_context_textures(ctx);
1722    switch (pname) {
1723       case GL_TEXTURE_MAG_FILTER:
1724          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
1725          break;
1726       case GL_TEXTURE_MIN_FILTER:
1727          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
1728          break;
1729       case GL_TEXTURE_WRAP_S:
1730          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
1731          break;
1732       case GL_TEXTURE_WRAP_T:
1733          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
1734          break;
1735       case GL_TEXTURE_WRAP_R:
1736          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
1737          break;
1738       case GL_TEXTURE_BORDER_COLOR:
1739          if (ctx->API == API_OPENGLES ||
1740              !ctx->Extensions.ARB_texture_border_clamp)
1741             goto invalid_pname;
1742
1743          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1744             _mesa_update_state_locked(ctx);
1745          if (_mesa_get_clamp_fragment_color(ctx, ctx->DrawBuffer)) {
1746             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1747             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1748             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1749             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1750          }
1751          else {
1752             params[0] = obj->Sampler.BorderColor.f[0];
1753             params[1] = obj->Sampler.BorderColor.f[1];
1754             params[2] = obj->Sampler.BorderColor.f[2];
1755             params[3] = obj->Sampler.BorderColor.f[3];
1756          }
1757          break;
1758       case GL_TEXTURE_RESIDENT:
1759          if (ctx->API != API_OPENGL_COMPAT)
1760             goto invalid_pname;
1761
1762          *params = 1.0F;
1763          break;
1764       case GL_TEXTURE_PRIORITY:
1765          if (ctx->API != API_OPENGL_COMPAT)
1766             goto invalid_pname;
1767
1768          *params = obj->Priority;
1769          break;
1770       case GL_TEXTURE_MIN_LOD:
1771          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1772             goto invalid_pname;
1773
1774          *params = obj->Sampler.MinLod;
1775          break;
1776       case GL_TEXTURE_MAX_LOD:
1777          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1778             goto invalid_pname;
1779
1780          *params = obj->Sampler.MaxLod;
1781          break;
1782       case GL_TEXTURE_BASE_LEVEL:
1783          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1784             goto invalid_pname;
1785
1786          *params = (GLfloat) obj->BaseLevel;
1787          break;
1788       case GL_TEXTURE_MAX_LEVEL:
1789          *params = (GLfloat) obj->MaxLevel;
1790          break;
1791       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1792          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
1793             goto invalid_pname;
1794          *params = obj->Sampler.MaxAnisotropy;
1795          break;
1796       case GL_GENERATE_MIPMAP_SGIS:
1797          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
1798             goto invalid_pname;
1799
1800          *params = (GLfloat) obj->GenerateMipmap;
1801          break;
1802       case GL_TEXTURE_COMPARE_MODE_ARB:
1803          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1804              && !_mesa_is_gles3(ctx))
1805             goto invalid_pname;
1806          *params = (GLfloat) obj->Sampler.CompareMode;
1807          break;
1808       case GL_TEXTURE_COMPARE_FUNC_ARB:
1809          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
1810              && !_mesa_is_gles3(ctx))
1811             goto invalid_pname;
1812          *params = (GLfloat) obj->Sampler.CompareFunc;
1813          break;
1814       case GL_DEPTH_TEXTURE_MODE_ARB:
1815          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
1816           * never existed in OpenGL ES.
1817           */
1818          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
1819             goto invalid_pname;
1820          *params = (GLfloat) obj->DepthMode;
1821          break;
1822       case GL_DEPTH_STENCIL_TEXTURE_MODE:
1823          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
1824             goto invalid_pname;
1825          *params = (GLfloat)
1826             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
1827          break;
1828       case GL_TEXTURE_LOD_BIAS:
1829          if (_mesa_is_gles(ctx))
1830             goto invalid_pname;
1831
1832          *params = obj->Sampler.LodBias;
1833          break;
1834       case GL_TEXTURE_CROP_RECT_OES:
1835          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
1836             goto invalid_pname;
1837
1838          params[0] = (GLfloat) obj->CropRect[0];
1839          params[1] = (GLfloat) obj->CropRect[1];
1840          params[2] = (GLfloat) obj->CropRect[2];
1841          params[3] = (GLfloat) obj->CropRect[3];
1842          break;
1843
1844       case GL_TEXTURE_SWIZZLE_R_EXT:
1845       case GL_TEXTURE_SWIZZLE_G_EXT:
1846       case GL_TEXTURE_SWIZZLE_B_EXT:
1847       case GL_TEXTURE_SWIZZLE_A_EXT:
1848          if ((!_mesa_is_desktop_gl(ctx)
1849               || !ctx->Extensions.EXT_texture_swizzle)
1850              && !_mesa_is_gles3(ctx))
1851             goto invalid_pname;
1852          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
1853          break;
1854
1855       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1856          if ((!_mesa_is_desktop_gl(ctx)
1857               || !ctx->Extensions.EXT_texture_swizzle)
1858              && !_mesa_is_gles3(ctx)) {
1859             goto invalid_pname;
1860          }
1861          else {
1862             GLuint comp;
1863             for (comp = 0; comp < 4; comp++) {
1864                params[comp] = (GLfloat) obj->Swizzle[comp];
1865             }
1866          }
1867          break;
1868
1869       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1870          if (!_mesa_is_desktop_gl(ctx)
1871              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
1872             goto invalid_pname;
1873          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
1874          break;
1875
1876       case GL_TEXTURE_IMMUTABLE_FORMAT:
1877          *params = (GLfloat) obj->Immutable;
1878          break;
1879
1880       case GL_TEXTURE_IMMUTABLE_LEVELS:
1881          if (_mesa_is_gles3(ctx) ||
1882              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
1883             *params = (GLfloat) obj->ImmutableLevels;
1884          else
1885             goto invalid_pname;
1886          break;
1887
1888       case GL_TEXTURE_VIEW_MIN_LEVEL:
1889          if (!ctx->Extensions.ARB_texture_view)
1890             goto invalid_pname;
1891          *params = (GLfloat) obj->MinLevel;
1892          break;
1893
1894       case GL_TEXTURE_VIEW_NUM_LEVELS:
1895          if (!ctx->Extensions.ARB_texture_view)
1896             goto invalid_pname;
1897          *params = (GLfloat) obj->NumLevels;
1898          break;
1899
1900       case GL_TEXTURE_VIEW_MIN_LAYER:
1901          if (!ctx->Extensions.ARB_texture_view)
1902             goto invalid_pname;
1903          *params = (GLfloat) obj->MinLayer;
1904          break;
1905
1906       case GL_TEXTURE_VIEW_NUM_LAYERS:
1907          if (!ctx->Extensions.ARB_texture_view)
1908             goto invalid_pname;
1909          *params = (GLfloat) obj->NumLayers;
1910          break;
1911
1912       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
1913          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
1914             goto invalid_pname;
1915          *params = (GLfloat) obj->RequiredTextureImageUnits;
1916          break;
1917
1918       case GL_TEXTURE_SRGB_DECODE_EXT:
1919          if (!ctx->Extensions.EXT_texture_sRGB_decode)
1920             goto invalid_pname;
1921          *params = (GLfloat) obj->Sampler.sRGBDecode;
1922          break;
1923
1924       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
1925          if (!ctx->Extensions.ARB_shader_image_load_store)
1926             goto invalid_pname;
1927          *params = (GLfloat) obj->ImageFormatCompatibilityType;
1928          break;
1929
1930       case GL_TEXTURE_TARGET:
1931          if (ctx->API != API_OPENGL_CORE)
1932             goto invalid_pname;
1933          *params = ENUM_TO_FLOAT(obj->Target);
1934          break;
1935
1936       default:
1937          goto invalid_pname;
1938    }
1939
1940    /* no error if we get here */
1941    _mesa_unlock_context_textures(ctx);
1942    return;
1943
1944 invalid_pname:
1945    _mesa_unlock_context_textures(ctx);
1946    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameterfv(pname=0x%x)",
1947                dsa ? "ture" : "", pname);
1948 }
1949
1950
1951 static void
1952 get_tex_parameteriv(struct gl_context *ctx,
1953                     struct gl_texture_object *obj,
1954                     GLenum pname, GLint *params, bool dsa)
1955 {
1956    _mesa_lock_texture(ctx, obj);
1957    switch (pname) {
1958       case GL_TEXTURE_MAG_FILTER:
1959          *params = (GLint) obj->Sampler.MagFilter;
1960          break;
1961       case GL_TEXTURE_MIN_FILTER:
1962          *params = (GLint) obj->Sampler.MinFilter;
1963          break;
1964       case GL_TEXTURE_WRAP_S:
1965          *params = (GLint) obj->Sampler.WrapS;
1966          break;
1967       case GL_TEXTURE_WRAP_T:
1968          *params = (GLint) obj->Sampler.WrapT;
1969          break;
1970       case GL_TEXTURE_WRAP_R:
1971          *params = (GLint) obj->Sampler.WrapR;
1972          break;
1973       case GL_TEXTURE_BORDER_COLOR:
1974          if (ctx->API == API_OPENGLES ||
1975              !ctx->Extensions.ARB_texture_border_clamp)
1976             goto invalid_pname;
1977
1978          {
1979             GLfloat b[4];
1980             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1981             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1982             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1983             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1984             params[0] = FLOAT_TO_INT(b[0]);
1985             params[1] = FLOAT_TO_INT(b[1]);
1986             params[2] = FLOAT_TO_INT(b[2]);
1987             params[3] = FLOAT_TO_INT(b[3]);
1988          }
1989          break;
1990       case GL_TEXTURE_RESIDENT:
1991          if (ctx->API != API_OPENGL_COMPAT)
1992             goto invalid_pname;
1993
1994          *params = 1;
1995          break;
1996       case GL_TEXTURE_PRIORITY:
1997          if (ctx->API != API_OPENGL_COMPAT)
1998             goto invalid_pname;
1999
2000          *params = FLOAT_TO_INT(obj->Priority);
2001          break;
2002       case GL_TEXTURE_MIN_LOD:
2003          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2004             goto invalid_pname;
2005          /* GL spec 'Data Conversions' section specifies that floating-point
2006           * value in integer Get function is rounded to nearest integer
2007           */
2008          *params = IROUND(obj->Sampler.MinLod);
2009          break;
2010       case GL_TEXTURE_MAX_LOD:
2011          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2012             goto invalid_pname;
2013          /* GL spec 'Data Conversions' section specifies that floating-point
2014           * value in integer Get function is rounded to nearest integer
2015           */
2016          *params = IROUND(obj->Sampler.MaxLod);
2017          break;
2018       case GL_TEXTURE_BASE_LEVEL:
2019          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2020             goto invalid_pname;
2021
2022          *params = obj->BaseLevel;
2023          break;
2024       case GL_TEXTURE_MAX_LEVEL:
2025          *params = obj->MaxLevel;
2026          break;
2027       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
2028          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
2029             goto invalid_pname;
2030          /* GL spec 'Data Conversions' section specifies that floating-point
2031           * value in integer Get function is rounded to nearest integer
2032           */
2033          *params = IROUND(obj->Sampler.MaxAnisotropy);
2034          break;
2035       case GL_GENERATE_MIPMAP_SGIS:
2036          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
2037             goto invalid_pname;
2038
2039          *params = (GLint) obj->GenerateMipmap;
2040          break;
2041       case GL_TEXTURE_COMPARE_MODE_ARB:
2042          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2043              && !_mesa_is_gles3(ctx))
2044             goto invalid_pname;
2045          *params = (GLint) obj->Sampler.CompareMode;
2046          break;
2047       case GL_TEXTURE_COMPARE_FUNC_ARB:
2048          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2049              && !_mesa_is_gles3(ctx))
2050             goto invalid_pname;
2051          *params = (GLint) obj->Sampler.CompareFunc;
2052          break;
2053       case GL_DEPTH_TEXTURE_MODE_ARB:
2054          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2055             goto invalid_pname;
2056          *params = (GLint) obj->DepthMode;
2057          break;
2058       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2059          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
2060             goto invalid_pname;
2061          *params = (GLint)
2062             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2063          break;
2064       case GL_TEXTURE_LOD_BIAS:
2065          if (_mesa_is_gles(ctx))
2066             goto invalid_pname;
2067
2068          /* GL spec 'Data Conversions' section specifies that floating-point
2069           * value in integer Get function is rounded to nearest integer
2070           */
2071          *params = IROUND(obj->Sampler.LodBias);
2072          break;
2073       case GL_TEXTURE_CROP_RECT_OES:
2074          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2075             goto invalid_pname;
2076
2077          params[0] = obj->CropRect[0];
2078          params[1] = obj->CropRect[1];
2079          params[2] = obj->CropRect[2];
2080          params[3] = obj->CropRect[3];
2081          break;
2082       case GL_TEXTURE_SWIZZLE_R_EXT:
2083       case GL_TEXTURE_SWIZZLE_G_EXT:
2084       case GL_TEXTURE_SWIZZLE_B_EXT:
2085       case GL_TEXTURE_SWIZZLE_A_EXT:
2086          if ((!_mesa_is_desktop_gl(ctx)
2087               || !ctx->Extensions.EXT_texture_swizzle)
2088              && !_mesa_is_gles3(ctx))
2089             goto invalid_pname;
2090          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2091          break;
2092
2093       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2094          if ((!_mesa_is_desktop_gl(ctx)
2095               || !ctx->Extensions.EXT_texture_swizzle)
2096              && !_mesa_is_gles3(ctx))
2097             goto invalid_pname;
2098          COPY_4V(params, obj->Swizzle);
2099          break;
2100
2101       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2102          if (!_mesa_is_desktop_gl(ctx)
2103              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2104             goto invalid_pname;
2105          *params = (GLint) obj->Sampler.CubeMapSeamless;
2106          break;
2107
2108       case GL_TEXTURE_IMMUTABLE_FORMAT:
2109          *params = (GLint) obj->Immutable;
2110          break;
2111
2112       case GL_TEXTURE_IMMUTABLE_LEVELS:
2113          if (_mesa_is_gles3(ctx) ||
2114              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
2115             *params = obj->ImmutableLevels;
2116          else
2117             goto invalid_pname;
2118          break;
2119
2120       case GL_TEXTURE_VIEW_MIN_LEVEL:
2121          if (!ctx->Extensions.ARB_texture_view)
2122             goto invalid_pname;
2123          *params = (GLint) obj->MinLevel;
2124          break;
2125
2126       case GL_TEXTURE_VIEW_NUM_LEVELS:
2127          if (!ctx->Extensions.ARB_texture_view)
2128             goto invalid_pname;
2129          *params = (GLint) obj->NumLevels;
2130          break;
2131
2132       case GL_TEXTURE_VIEW_MIN_LAYER:
2133          if (!ctx->Extensions.ARB_texture_view)
2134             goto invalid_pname;
2135          *params = (GLint) obj->MinLayer;
2136          break;
2137
2138       case GL_TEXTURE_VIEW_NUM_LAYERS:
2139          if (!ctx->Extensions.ARB_texture_view)
2140             goto invalid_pname;
2141          *params = (GLint) obj->NumLayers;
2142          break;
2143
2144       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2145          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2146             goto invalid_pname;
2147          *params = obj->RequiredTextureImageUnits;
2148          break;
2149
2150       case GL_TEXTURE_SRGB_DECODE_EXT:
2151          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2152             goto invalid_pname;
2153          *params = obj->Sampler.sRGBDecode;
2154          break;
2155
2156       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2157          if (!ctx->Extensions.ARB_shader_image_load_store)
2158             goto invalid_pname;
2159          *params = obj->ImageFormatCompatibilityType;
2160          break;
2161
2162       case GL_TEXTURE_TARGET:
2163          if (ctx->API != API_OPENGL_CORE)
2164             goto invalid_pname;
2165          *params = (GLint) obj->Target;
2166          break;
2167
2168       default:
2169          goto invalid_pname;
2170    }
2171
2172    /* no error if we get here */
2173    _mesa_unlock_texture(ctx, obj);
2174    return;
2175
2176 invalid_pname:
2177    _mesa_unlock_texture(ctx, obj);
2178    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameteriv(pname=0x%x)",
2179                dsa ? "ture" : "", pname);
2180 }
2181
2182 static void
2183 get_tex_parameterIiv(struct gl_context *ctx,
2184                      struct gl_texture_object *obj,
2185                      GLenum pname, GLint *params, bool dsa)
2186 {
2187    switch (pname) {
2188    case GL_TEXTURE_BORDER_COLOR:
2189       COPY_4V(params, obj->Sampler.BorderColor.i);
2190       break;
2191    default:
2192       get_tex_parameteriv(ctx, obj, pname, params, dsa);
2193    }
2194 }
2195
2196 static void
2197 get_tex_parameterIuiv(struct gl_context *ctx,
2198                       struct gl_texture_object *obj,
2199                       GLenum pname, GLuint *params, bool dsa)
2200 {
2201    switch (pname) {
2202    case GL_TEXTURE_BORDER_COLOR:
2203       COPY_4V(params, obj->Sampler.BorderColor.i);
2204       break;
2205    default:
2206       {
2207          GLint ip[4];
2208          get_tex_parameteriv(ctx, obj, pname, ip, dsa);
2209          params[0] = ip[0];
2210          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
2211              pname == GL_TEXTURE_CROP_RECT_OES) {
2212             params[1] = ip[1];
2213             params[2] = ip[2];
2214             params[3] = ip[3];
2215          }
2216       }
2217    }
2218 }
2219
2220 void GLAPIENTRY
2221 _mesa_GetTexParameterfv(GLenum target, GLenum pname, GLfloat *params)
2222 {
2223    struct gl_texture_object *obj;
2224    GET_CURRENT_CONTEXT(ctx);
2225
2226    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2227    if (!obj)
2228       return;
2229
2230    get_tex_parameterfv(ctx, obj, pname, params, false);
2231 }
2232
2233 void GLAPIENTRY
2234 _mesa_GetTexParameteriv(GLenum target, GLenum pname, GLint *params)
2235 {
2236    struct gl_texture_object *obj;
2237    GET_CURRENT_CONTEXT(ctx);
2238
2239    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2240    if (!obj)
2241       return;
2242
2243    get_tex_parameteriv(ctx, obj, pname, params, false);
2244 }
2245
2246 /** New in GL 3.0 */
2247 void GLAPIENTRY
2248 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
2249 {
2250    struct gl_texture_object *texObj;
2251    GET_CURRENT_CONTEXT(ctx);
2252
2253    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2254    if (!texObj)
2255       return;
2256
2257    get_tex_parameterIiv(ctx, texObj, pname, params, false);
2258 }
2259
2260
2261 /** New in GL 3.0 */
2262 void GLAPIENTRY
2263 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
2264 {
2265    struct gl_texture_object *texObj;
2266    GET_CURRENT_CONTEXT(ctx);
2267
2268    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2269    if (!texObj)
2270       return;
2271
2272    get_tex_parameterIuiv(ctx, texObj, pname, params, false);
2273 }
2274
2275
2276 void GLAPIENTRY
2277 _mesa_GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat *params)
2278 {
2279    struct gl_texture_object *obj;
2280    GET_CURRENT_CONTEXT(ctx);
2281
2282    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2283    if (!obj) {
2284       /* User passed a non-generated name. */
2285       _mesa_error(ctx, GL_INVALID_OPERATION,
2286                   "glGetTextureParameterfv(texture)");
2287       return;
2288    }
2289
2290    get_tex_parameterfv(ctx, obj, pname, params, true);
2291 }
2292
2293 void GLAPIENTRY
2294 _mesa_GetTextureParameteriv(GLuint texture, GLenum pname, GLint *params)
2295 {
2296    struct gl_texture_object *obj;
2297    GET_CURRENT_CONTEXT(ctx);
2298
2299    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2300    if (!obj) {
2301       /* User passed a non-generated name. */
2302       _mesa_error(ctx, GL_INVALID_OPERATION,
2303                   "glGetTextureParameteriv(texture)");
2304       return;
2305    }
2306
2307    get_tex_parameteriv(ctx, obj, pname, params, true);
2308 }
2309
2310 void GLAPIENTRY
2311 _mesa_GetTextureParameterIiv(GLuint texture, GLenum pname, GLint *params)
2312 {
2313    struct gl_texture_object *texObj;
2314    GET_CURRENT_CONTEXT(ctx);
2315
2316    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2317    if (!texObj) {
2318       /* User passed a non-generated name. */
2319       _mesa_error(ctx, GL_INVALID_OPERATION,
2320                   "glGetTextureParameterIiv(texture)");
2321       return;
2322    }
2323
2324    get_tex_parameterIiv(ctx, texObj, pname, params, true);
2325 }
2326
2327
2328 void GLAPIENTRY
2329 _mesa_GetTextureParameterIuiv(GLuint texture, GLenum pname, GLuint *params)
2330 {
2331    struct gl_texture_object *texObj;
2332    GET_CURRENT_CONTEXT(ctx);
2333
2334    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2335    if (!texObj) {
2336       /* User passed a non-generated name. */
2337       _mesa_error(ctx, GL_INVALID_OPERATION,
2338                   "glGetTextureParameterIuiv(texture)");
2339       return;
2340    }
2341
2342    get_tex_parameterIuiv(ctx, texObj, pname, params, true);
2343 }