src/mesa/main/texparam.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /**
  27  * \file texparam.c
  28  *
  29  * glTexParameter-related functions
  30  */
  31
  32 #include <stdbool.h>
  33 #include "main/glheader.h"
  34 #include "main/blend.h"
  35 #include "main/context.h"
  36 #include "main/enums.h"
  37 #include "main/formats.h"
  38 #include "main/glformats.h"
  39 #include "main/macros.h"
  40 #include "main/mtypes.h"
  41 #include "main/state.h"
  42 #include "main/texcompress.h"
  43 #include "main/texobj.h"
  44 #include "main/texparam.h"
  45 #include "main/teximage.h"
  46 #include "main/texstate.h"
  47 #include "program/prog_instruction.h"
  48
  49
  50 /**
  51  * Check if a coordinate wrap mode is supported for the texture target.
  52  * \return GL_TRUE if legal, GL_FALSE otherwise
  53  */
  54 static GLboolean
  55 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
  56 {
  57    const struct gl_extensions * const e = & ctx->Extensions;
  58    const bool is_desktop_gl = _mesa_is_desktop_gl(ctx);
  59    bool supported;
  60
  61    switch (wrap) {
  62    case GL_CLAMP:
  63       /* GL_CLAMP was removed in the core profile, and it has never existed in
  64        * OpenGL ES.
  65        */
  66       supported = (ctx->API == API_OPENGL_COMPAT)
  67          && (target != GL_TEXTURE_EXTERNAL_OES);
  68       break;
  69
  70    case GL_CLAMP_TO_EDGE:
  71       supported = true;
  72       break;
  73
  74    case GL_CLAMP_TO_BORDER:
  75       supported = is_desktop_gl && e->ARB_texture_border_clamp
  76          && (target != GL_TEXTURE_EXTERNAL_OES);
  77       break;
  78
  79    case GL_REPEAT:
  80    case GL_MIRRORED_REPEAT:
  81       supported = (target != GL_TEXTURE_RECTANGLE_NV)
  82          && (target != GL_TEXTURE_EXTERNAL_OES);
  83       break;
  84
  85    case GL_MIRROR_CLAMP_EXT:
  86       supported = is_desktop_gl
  87          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)
  88          && (target != GL_TEXTURE_RECTANGLE_NV)
  89          && (target != GL_TEXTURE_EXTERNAL_OES);
  90       break;
  91
  92    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  93       supported = is_desktop_gl
  94          && (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp || e->ARB_texture_mirror_clamp_to_edge)
  95          && (target != GL_TEXTURE_RECTANGLE_NV)
  96          && (target != GL_TEXTURE_EXTERNAL_OES);
  97       break;
  98
  99    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
 100       supported = is_desktop_gl && e->EXT_texture_mirror_clamp
 101          && (target != GL_TEXTURE_RECTANGLE_NV)
 102          && (target != GL_TEXTURE_EXTERNAL_OES);
 103       break;
 104
 105    default:
 106       supported = false;
 107       break;
 108    }
 109
 110    if (!supported)
 111       _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
 112
 113    return supported;
 114 }
 115
 116
 117 /**
 118  * Get current texture object for given target.
 119  * Return NULL if any error (and record the error).
 120  * Note that this is different from _mesa_get_current_tex_object() in that
 121  * proxy targets are not accepted.
 122  * Only the glGetTexLevelParameter() functions accept proxy targets.
 123  */
 124 static struct gl_texture_object *
 125 get_texobj_by_target(struct gl_context *ctx, GLenum target, GLboolean get)
 126 {
 127    struct gl_texture_unit *texUnit;
 128    int targetIndex;
 129
 130    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
 131       _mesa_error(ctx, GL_INVALID_OPERATION,
 132                   "gl%sTexParameter(current unit)", get ? "Get" : "");
 133       return NULL;
 134    }
 135
 136    texUnit = _mesa_get_current_tex_unit(ctx);
 137
 138    targetIndex = _mesa_tex_target_to_index(ctx, target);
 139    if (targetIndex < 0 || targetIndex == TEXTURE_BUFFER_INDEX) {
 140       _mesa_error(ctx, GL_INVALID_ENUM,
 141                   "gl%sTexParameter(target)", get ? "Get" : "");
 142       return NULL;
 143    }
 144    assert(targetIndex < NUM_TEXTURE_TARGETS);
 145
 146    return texUnit->CurrentTex[targetIndex];
 147 }
 148
 149 /**
 150  * Get current texture object for given name.
 151  * Return NULL if any error (and record the error).
 152  * Note that proxy targets are not accepted.
 153  * Only the glGetTexLevelParameter() functions accept proxy targets.
 154  */
 155 static struct gl_texture_object *
 156 get_texobj_by_name(struct gl_context *ctx, GLuint texture, GLboolean get)
 157 {
 158    struct gl_texture_object *texObj;
 159
 160    texObj = _mesa_lookup_texture(ctx, texture);
 161    if (!texObj) {
 162       /*
 163        * User passed a non-generated name.
 164        * Throw the error in the caller.
 165        */
 166       return NULL;
 167    }
 168
 169    switch (texObj->Target) {
 170    case GL_TEXTURE_1D:
 171    case GL_TEXTURE_1D_ARRAY:
 172    case GL_TEXTURE_2D:
 173    case GL_TEXTURE_2D_ARRAY:
 174    case GL_TEXTURE_2D_MULTISAMPLE:
 175    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 176    case GL_TEXTURE_3D:
 177    case GL_TEXTURE_CUBE_MAP:
 178    case GL_TEXTURE_CUBE_MAP_ARRAY:
 179    case GL_TEXTURE_RECTANGLE:
 180       return texObj;
 181    default:
 182       _mesa_error(ctx, GL_INVALID_ENUM,
 183                   "gl%sTextureParameter(target)", get ? "Get" : "");
 184       return NULL;
 185    }
 186
 187 }
 188
 189
 190 /**
 191  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 192  * \return -1 if error.
 193  */
 194 static GLint
 195 comp_to_swizzle(GLenum comp)
 196 {
 197    switch (comp) {
 198    case GL_RED:
 199       return SWIZZLE_X;
 200    case GL_GREEN:
 201       return SWIZZLE_Y;
 202    case GL_BLUE:
 203       return SWIZZLE_Z;
 204    case GL_ALPHA:
 205       return SWIZZLE_W;
 206    case GL_ZERO:
 207       return SWIZZLE_ZERO;
 208    case GL_ONE:
 209       return SWIZZLE_ONE;
 210    default:
 211       return -1;
 212    }
 213 }
 214
 215
 216 static void
 217 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
 218 {
 219    assert(comp < 4);
 220    assert(swz <= SWIZZLE_NIL);
 221    {
 222       GLuint mask = 0x7 << (3 * comp);
 223       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 224       *swizzle = s;
 225    }
 226 }
 227
 228
 229 /**
 230  * This is called just prior to changing any texture object state which
 231  * will not affect texture completeness.
 232  */
 233 static inline void
 234 flush(struct gl_context *ctx)
 235 {
 236    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 237 }
 238
 239
 240 /**
 241  * This is called just prior to changing any texture object state which
 242  * could affect texture completeness (texture base level, max level).
 243  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
 244  * state flag and then mark the texture object as 'incomplete' so that any
 245  * per-texture derived state gets recomputed.
 246  */
 247 static inline void
 248 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 249 {
 250    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 251    _mesa_dirty_texobj(ctx, texObj);
 252 }
 253
 254
 255 static GLboolean
 256 target_allows_setting_sampler_parameters(GLenum target)
 257 {
 258    switch (target) {
 259    case GL_TEXTURE_2D_MULTISAMPLE:
 260    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 261       return GL_FALSE;
 262
 263    default:
 264       return GL_TRUE;
 265    }
 266 }
 267
 268
 269 /**
 270  * Set an integer-valued texture parameter
 271  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 272  */
 273 static GLboolean
 274 set_tex_parameteri(struct gl_context *ctx,
 275                    struct gl_texture_object *texObj,
 276                    GLenum pname, const GLint *params, bool dsa)
 277 {
 278    const char *suffix = dsa ? "ture" : "";
 279
 280    switch (pname) {
 281    case GL_TEXTURE_MIN_FILTER:
 282       if (!target_allows_setting_sampler_parameters(texObj->Target))
 283          goto invalid_enum;
 284
 285       if (texObj->Sampler.MinFilter == params[0])
 286          return GL_FALSE;
 287       switch (params[0]) {
 288       case GL_NEAREST:
 289       case GL_LINEAR:
 290          flush(ctx);
 291          texObj->Sampler.MinFilter = params[0];
 292          return GL_TRUE;
 293       case GL_NEAREST_MIPMAP_NEAREST:
 294       case GL_LINEAR_MIPMAP_NEAREST:
 295       case GL_NEAREST_MIPMAP_LINEAR:
 296       case GL_LINEAR_MIPMAP_LINEAR:
 297          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 298              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 299             flush(ctx);
 300             texObj->Sampler.MinFilter = params[0];
 301             return GL_TRUE;
 302          }
 303          /* fall-through */
 304       default:
 305          goto invalid_param;
 306       }
 307       return GL_FALSE;
 308
 309    case GL_TEXTURE_MAG_FILTER:
 310       if (!target_allows_setting_sampler_parameters(texObj->Target))
 311          goto invalid_enum;
 312
 313       if (texObj->Sampler.MagFilter == params[0])
 314          return GL_FALSE;
 315       switch (params[0]) {
 316       case GL_NEAREST:
 317       case GL_LINEAR:
 318          flush(ctx); /* does not effect completeness */
 319          texObj->Sampler.MagFilter = params[0];
 320          return GL_TRUE;
 321       default:
 322          goto invalid_param;
 323       }
 324       return GL_FALSE;
 325
 326    case GL_TEXTURE_WRAP_S:
 327       if (!target_allows_setting_sampler_parameters(texObj->Target))
 328          goto invalid_enum;
 329
 330       if (texObj->Sampler.WrapS == params[0])
 331          return GL_FALSE;
 332       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 333          flush(ctx);
 334          texObj->Sampler.WrapS = params[0];
 335          return GL_TRUE;
 336       }
 337       return GL_FALSE;
 338
 339    case GL_TEXTURE_WRAP_T:
 340       if (!target_allows_setting_sampler_parameters(texObj->Target))
 341          goto invalid_enum;
 342
 343       if (texObj->Sampler.WrapT == params[0])
 344          return GL_FALSE;
 345       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 346          flush(ctx);
 347          texObj->Sampler.WrapT = params[0];
 348          return GL_TRUE;
 349       }
 350       return GL_FALSE;
 351
 352    case GL_TEXTURE_WRAP_R:
 353       if (!target_allows_setting_sampler_parameters(texObj->Target))
 354          goto invalid_enum;
 355
 356       if (texObj->Sampler.WrapR == params[0])
 357          return GL_FALSE;
 358       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 359          flush(ctx);
 360          texObj->Sampler.WrapR = params[0];
 361          return GL_TRUE;
 362       }
 363       return GL_FALSE;
 364
 365    case GL_TEXTURE_BASE_LEVEL:
 366       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 367          goto invalid_pname;
 368
 369       if (texObj->BaseLevel == params[0])
 370          return GL_FALSE;
 371
 372       if ((texObj->Target == GL_TEXTURE_2D_MULTISAMPLE ||
 373            texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) && params[0] != 0)
 374          goto invalid_operation;
 375
 376       if (params[0] < 0) {
 377          _mesa_error(ctx, GL_INVALID_VALUE,
 378                      "glTex%sParameter(param=%d)", suffix, params[0]);
 379          return GL_FALSE;
 380       }
 381       if (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0) {
 382          _mesa_error(ctx, GL_INVALID_OPERATION,
 383                      "glTex%sParameter(target=%s, param=%d)", suffix,
 384                      _mesa_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_is_desktop_gl(ctx) &&
 504            ctx->Extensions.ARB_stencil_texturing) ||
 505           _mesa_is_gles31(ctx)) {
 506          bool stencil = params[0] == GL_STENCIL_INDEX;
 507          if (!stencil && params[0] != GL_DEPTH_COMPONENT)
 508             goto invalid_param;
 509
 510          if (texObj->StencilSampling == stencil)
 511             return GL_FALSE;
 512
 513          texObj->StencilSampling = stencil;
 514          return GL_TRUE;
 515       }
 516       goto invalid_pname;
 517
 518    case GL_TEXTURE_CROP_RECT_OES:
 519       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 520          goto invalid_pname;
 521
 522       texObj->CropRect[0] = params[0];
 523       texObj->CropRect[1] = params[1];
 524       texObj->CropRect[2] = params[2];
 525       texObj->CropRect[3] = params[3];
 526       return GL_TRUE;
 527
 528    case GL_TEXTURE_SWIZZLE_R_EXT:
 529    case GL_TEXTURE_SWIZZLE_G_EXT:
 530    case GL_TEXTURE_SWIZZLE_B_EXT:
 531    case GL_TEXTURE_SWIZZLE_A_EXT:
 532       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 533           || _mesa_is_gles3(ctx)) {
 534          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 535          const GLint swz = comp_to_swizzle(params[0]);
 536          if (swz < 0) {
 537             _mesa_error(ctx, GL_INVALID_ENUM,
 538                         "glTex%sParameter(swizzle 0x%x)", suffix, params[0]);
 539             return GL_FALSE;
 540          }
 541          assert(comp < 4);
 542
 543          flush(ctx);
 544          texObj->Swizzle[comp] = params[0];
 545          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 546          return GL_TRUE;
 547       }
 548       goto invalid_pname;
 549
 550    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 551       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 552           || _mesa_is_gles3(ctx)) {
 553          GLuint comp;
 554          flush(ctx);
 555          for (comp = 0; comp < 4; comp++) {
 556             const GLint swz = comp_to_swizzle(params[comp]);
 557             if (swz >= 0) {
 558                texObj->Swizzle[comp] = params[comp];
 559                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 560             }
 561             else {
 562                _mesa_error(ctx, GL_INVALID_ENUM,
 563                            "glTex%sParameter(swizzle 0x%x)",
 564                            suffix, params[comp]);
 565                return GL_FALSE;
 566             }
 567          }
 568          return GL_TRUE;
 569       }
 570       goto invalid_pname;
 571
 572    case GL_TEXTURE_SRGB_DECODE_EXT:
 573       if (_mesa_is_desktop_gl(ctx)
 574           && ctx->Extensions.EXT_texture_sRGB_decode) {
 575          GLenum decode = params[0];
 576
 577          if (!target_allows_setting_sampler_parameters(texObj->Target))
 578             goto invalid_enum;
 579
 580          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 581             if (texObj->Sampler.sRGBDecode != decode) {
 582                flush(ctx);
 583                texObj->Sampler.sRGBDecode = decode;
 584             }
 585             return GL_TRUE;
 586          }
 587       }
 588       goto invalid_pname;
 589
 590    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 591       if (_mesa_is_desktop_gl(ctx)
 592           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 593          GLenum param = params[0];
 594
 595          if (!target_allows_setting_sampler_parameters(texObj->Target))
 596             goto invalid_enum;
 597
 598          if (param != GL_TRUE && param != GL_FALSE) {
 599             goto invalid_param;
 600          }
 601          if (param != texObj->Sampler.CubeMapSeamless) {
 602             flush(ctx);
 603             texObj->Sampler.CubeMapSeamless = param;
 604          }
 605          return GL_TRUE;
 606       }
 607       goto invalid_pname;
 608
 609    default:
 610       goto invalid_pname;
 611    }
 612
 613 invalid_pname:
 614    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 615                suffix, _mesa_enum_to_string(pname));
 616    return GL_FALSE;
 617
 618 invalid_param:
 619    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(param=%s)",
 620                suffix, _mesa_enum_to_string(params[0]));
 621    return GL_FALSE;
 622
 623 invalid_operation:
 624    _mesa_error(ctx, GL_INVALID_OPERATION, "glTex%sParameter(pname=%s)",
 625                suffix, _mesa_enum_to_string(pname));
 626    return GL_FALSE;
 627
 628 invalid_enum:
 629    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 630                suffix, _mesa_enum_to_string(pname));
 631    return GL_FALSE;
 632 }
 633
 634
 635 /**
 636  * Set a float-valued texture parameter
 637  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 638  */
 639 static GLboolean
 640 set_tex_parameterf(struct gl_context *ctx,
 641                    struct gl_texture_object *texObj,
 642                    GLenum pname, const GLfloat *params, bool dsa)
 643 {
 644    const char *suffix = dsa ? "ture" : "";
 645
 646    switch (pname) {
 647    case GL_TEXTURE_MIN_LOD:
 648       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 649          goto invalid_pname;
 650
 651       if (!target_allows_setting_sampler_parameters(texObj->Target))
 652          goto invalid_enum;
 653
 654       if (texObj->Sampler.MinLod == params[0])
 655          return GL_FALSE;
 656       flush(ctx);
 657       texObj->Sampler.MinLod = params[0];
 658       return GL_TRUE;
 659
 660    case GL_TEXTURE_MAX_LOD:
 661       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 662          goto invalid_pname;
 663
 664       if (!target_allows_setting_sampler_parameters(texObj->Target))
 665          goto invalid_enum;
 666
 667       if (texObj->Sampler.MaxLod == params[0])
 668          return GL_FALSE;
 669       flush(ctx);
 670       texObj->Sampler.MaxLod = params[0];
 671       return GL_TRUE;
 672
 673    case GL_TEXTURE_PRIORITY:
 674       if (ctx->API != API_OPENGL_COMPAT)
 675          goto invalid_pname;
 676
 677       flush(ctx);
 678       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 679       return GL_TRUE;
 680
 681    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 682       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 683          if (!target_allows_setting_sampler_parameters(texObj->Target))
 684             goto invalid_enum;
 685
 686          if (texObj->Sampler.MaxAnisotropy == params[0])
 687             return GL_FALSE;
 688          if (params[0] < 1.0F) {
 689             _mesa_error(ctx, GL_INVALID_VALUE, "glTex%sParameter(param)",
 690                         suffix);
 691             return GL_FALSE;
 692          }
 693          flush(ctx);
 694          /* clamp to max, that's what NVIDIA does */
 695          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 696                                       ctx->Const.MaxTextureMaxAnisotropy);
 697          return GL_TRUE;
 698       }
 699       else {
 700          static GLuint count = 0;
 701          if (count++ < 10)
 702             goto invalid_pname;
 703       }
 704       return GL_FALSE;
 705
 706    case GL_TEXTURE_LOD_BIAS:
 707       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 708       if (_mesa_is_gles(ctx))
 709          goto invalid_pname;
 710
 711       if (!target_allows_setting_sampler_parameters(texObj->Target))
 712          goto invalid_enum;
 713
 714       if (texObj->Sampler.LodBias != params[0]) {
 715          flush(ctx);
 716          texObj->Sampler.LodBias = params[0];
 717          return GL_TRUE;
 718       }
 719       break;
 720
 721    case GL_TEXTURE_BORDER_COLOR:
 722       if (!_mesa_is_desktop_gl(ctx))
 723          goto invalid_pname;
 724
 725       if (!target_allows_setting_sampler_parameters(texObj->Target))
 726          goto invalid_enum;
 727
 728       flush(ctx);
 729       /* ARB_texture_float disables clamping */
 730       if (ctx->Extensions.ARB_texture_float) {
 731          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 732          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 733          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 734          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 735       } else {
 736          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 737          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 738          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 739          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 740       }
 741       return GL_TRUE;
 742
 743    default:
 744       goto invalid_pname;
 745    }
 746    return GL_FALSE;
 747
 748 invalid_pname:
 749    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 750                suffix, _mesa_enum_to_string(pname));
 751    return GL_FALSE;
 752
 753 invalid_enum:
 754    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 755                suffix, _mesa_enum_to_string(pname));
 756    return GL_FALSE;
 757 }
 758
 759
 760 void
 761 _mesa_texture_parameterf(struct gl_context *ctx,
 762                          struct gl_texture_object *texObj,
 763                          GLenum pname, GLfloat param, bool dsa)
 764 {
 765    GLboolean need_update;
 766
 767    switch (pname) {
 768    case GL_TEXTURE_MIN_FILTER:
 769    case GL_TEXTURE_MAG_FILTER:
 770    case GL_TEXTURE_WRAP_S:
 771    case GL_TEXTURE_WRAP_T:
 772    case GL_TEXTURE_WRAP_R:
 773    case GL_TEXTURE_BASE_LEVEL:
 774    case GL_TEXTURE_MAX_LEVEL:
 775    case GL_GENERATE_MIPMAP_SGIS:
 776    case GL_TEXTURE_COMPARE_MODE_ARB:
 777    case GL_TEXTURE_COMPARE_FUNC_ARB:
 778    case GL_DEPTH_TEXTURE_MODE_ARB:
 779    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 780    case GL_TEXTURE_SRGB_DECODE_EXT:
 781    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 782    case GL_TEXTURE_SWIZZLE_R_EXT:
 783    case GL_TEXTURE_SWIZZLE_G_EXT:
 784    case GL_TEXTURE_SWIZZLE_B_EXT:
 785    case GL_TEXTURE_SWIZZLE_A_EXT:
 786       {
 787          GLint p[4];
 788          p[0] = (param > 0) ?
 789                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 790                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 791
 792          p[1] = p[2] = p[3] = 0;
 793          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 794       }
 795       break;
 796    case GL_TEXTURE_BORDER_COLOR:
 797    case GL_TEXTURE_SWIZZLE_RGBA:
 798       _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameterf(non-scalar pname)",
 799                   dsa ? "ture" : "");
 800       return;
 801    default:
 802       {
 803          /* this will generate an error if pname is illegal */
 804          GLfloat p[4];
 805          p[0] = param;
 806          p[1] = p[2] = p[3] = 0.0F;
 807          need_update = set_tex_parameterf(ctx, texObj, pname, p, dsa);
 808       }
 809    }
 810
 811    if (ctx->Driver.TexParameter && need_update) {
 812       ctx->Driver.TexParameter(ctx, texObj, pname, &param);
 813    }
 814 }
 815
 816
 817 void
 818 _mesa_texture_parameterfv(struct gl_context *ctx,
 819                           struct gl_texture_object *texObj,
 820                           GLenum pname, const GLfloat *params, bool dsa)
 821 {
 822    GLboolean need_update;
 823    switch (pname) {
 824    case GL_TEXTURE_MIN_FILTER:
 825    case GL_TEXTURE_MAG_FILTER:
 826    case GL_TEXTURE_WRAP_S:
 827    case GL_TEXTURE_WRAP_T:
 828    case GL_TEXTURE_WRAP_R:
 829    case GL_TEXTURE_BASE_LEVEL:
 830    case GL_TEXTURE_MAX_LEVEL:
 831    case GL_GENERATE_MIPMAP_SGIS:
 832    case GL_TEXTURE_COMPARE_MODE_ARB:
 833    case GL_TEXTURE_COMPARE_FUNC_ARB:
 834    case GL_DEPTH_TEXTURE_MODE_ARB:
 835    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 836    case GL_TEXTURE_SRGB_DECODE_EXT:
 837    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 838       {
 839          /* convert float param to int */
 840          GLint p[4];
 841          p[0] = (GLint) params[0];
 842          p[1] = p[2] = p[3] = 0;
 843          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 844       }
 845       break;
 846    case GL_TEXTURE_CROP_RECT_OES:
 847       {
 848          /* convert float params to int */
 849          GLint iparams[4];
 850          iparams[0] = (GLint) params[0];
 851          iparams[1] = (GLint) params[1];
 852          iparams[2] = (GLint) params[2];
 853          iparams[3] = (GLint) params[3];
 854          need_update = set_tex_parameteri(ctx, texObj, pname, iparams, dsa);
 855       }
 856       break;
 857    case GL_TEXTURE_SWIZZLE_R_EXT:
 858    case GL_TEXTURE_SWIZZLE_G_EXT:
 859    case GL_TEXTURE_SWIZZLE_B_EXT:
 860    case GL_TEXTURE_SWIZZLE_A_EXT:
 861    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 862       {
 863          GLint p[4] = {0, 0, 0, 0};
 864          p[0] = (GLint) params[0];
 865          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 866             p[1] = (GLint) params[1];
 867             p[2] = (GLint) params[2];
 868             p[3] = (GLint) params[3];
 869          }
 870          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 871       }
 872       break;
 873    default:
 874       /* this will generate an error if pname is illegal */
 875       need_update = set_tex_parameterf(ctx, texObj, pname, params, dsa);
 876    }
 877
 878    if (ctx->Driver.TexParameter && need_update) {
 879       ctx->Driver.TexParameter(ctx, texObj, pname, params);
 880    }
 881 }
 882
 883
 884 void
 885 _mesa_texture_parameteri(struct gl_context *ctx,
 886                          struct gl_texture_object *texObj,
 887                          GLenum pname, GLint param, bool dsa)
 888 {
 889    GLboolean need_update;
 890    switch (pname) {
 891    case GL_TEXTURE_MIN_LOD:
 892    case GL_TEXTURE_MAX_LOD:
 893    case GL_TEXTURE_PRIORITY:
 894    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 895    case GL_TEXTURE_LOD_BIAS:
 896    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 897       {
 898          GLfloat fparam[4];
 899          fparam[0] = (GLfloat) param;
 900          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 901          /* convert int param to float */
 902          need_update = set_tex_parameterf(ctx, texObj, pname, fparam, dsa);
 903       }
 904       break;
 905    case GL_TEXTURE_BORDER_COLOR:
 906    case GL_TEXTURE_SWIZZLE_RGBA:
 907       {
 908          _mesa_error(ctx, GL_INVALID_ENUM,
 909                      "glTex%sParameteri(non-scalar pname)",
 910                      dsa ? "ture" : "");
 911          return;
 912       }
 913    default:
 914       /* this will generate an error if pname is illegal */
 915       {
 916          GLint iparam[4];
 917          iparam[0] = param;
 918          iparam[1] = iparam[2] = iparam[3] = 0;
 919          need_update = set_tex_parameteri(ctx, texObj, pname, iparam, dsa);
 920       }
 921    }
 922
 923    if (ctx->Driver.TexParameter && need_update) {
 924       GLfloat fparam = (GLfloat) param;
 925       ctx->Driver.TexParameter(ctx, texObj, pname, &fparam);
 926    }
 927 }
 928
 929
 930 void
 931 _mesa_texture_parameteriv(struct gl_context *ctx,
 932                           struct gl_texture_object *texObj,
 933                           GLenum pname, const GLint *params, bool dsa)
 934 {
 935    GLboolean need_update;
 936
 937    switch (pname) {
 938    case GL_TEXTURE_BORDER_COLOR:
 939       {
 940          /* convert int params to float */
 941          GLfloat fparams[4];
 942          fparams[0] = INT_TO_FLOAT(params[0]);
 943          fparams[1] = INT_TO_FLOAT(params[1]);
 944          fparams[2] = INT_TO_FLOAT(params[2]);
 945          fparams[3] = INT_TO_FLOAT(params[3]);
 946          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 947       }
 948       break;
 949    case GL_TEXTURE_MIN_LOD:
 950    case GL_TEXTURE_MAX_LOD:
 951    case GL_TEXTURE_PRIORITY:
 952    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 953    case GL_TEXTURE_LOD_BIAS:
 954    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 955       {
 956          /* convert int param to float */
 957          GLfloat fparams[4];
 958          fparams[0] = (GLfloat) params[0];
 959          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 960          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 961       }
 962       break;
 963    default:
 964       /* this will generate an error if pname is illegal */
 965       need_update = set_tex_parameteri(ctx, texObj, pname, params, dsa);
 966    }
 967
 968    if (ctx->Driver.TexParameter && need_update) {
 969       GLfloat fparams[4];
 970       fparams[0] = INT_TO_FLOAT(params[0]);
 971       if (pname == GL_TEXTURE_BORDER_COLOR ||
 972           pname == GL_TEXTURE_CROP_RECT_OES) {
 973          fparams[1] = INT_TO_FLOAT(params[1]);
 974          fparams[2] = INT_TO_FLOAT(params[2]);
 975          fparams[3] = INT_TO_FLOAT(params[3]);
 976       }
 977       ctx->Driver.TexParameter(ctx, texObj, pname, fparams);
 978    }
 979 }
 980
 981 void
 982 _mesa_texture_parameterIiv(struct gl_context *ctx,
 983                            struct gl_texture_object *texObj,
 984                            GLenum pname, const GLint *params, bool dsa)
 985 {
 986    switch (pname) {
 987    case GL_TEXTURE_BORDER_COLOR:
 988       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
 989       /* set the integer-valued border color */
 990       COPY_4V(texObj->Sampler.BorderColor.i, params);
 991       break;
 992    default:
 993       _mesa_texture_parameteriv(ctx, texObj, pname, params, dsa);
 994       break;
 995    }
 996    /* XXX no driver hook for TexParameterIiv() yet */
 997 }
 998
 999 void
1000 _mesa_texture_parameterIuiv(struct gl_context *ctx,
1001                             struct gl_texture_object *texObj,
1002                             GLenum pname, const GLuint *params, bool dsa)
1003 {
1004    switch (pname) {
1005    case GL_TEXTURE_BORDER_COLOR:
1006       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1007       /* set the unsigned integer-valued border color */
1008       COPY_4V(texObj->Sampler.BorderColor.ui, params);
1009       break;
1010    default:
1011       _mesa_texture_parameteriv(ctx, texObj, pname, (const GLint *) params,
1012                                 dsa);
1013       break;
1014    }
1015    /* XXX no driver hook for TexParameterIuiv() yet */
1016 }
1017
1018 void GLAPIENTRY
1019 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
1020 {
1021    struct gl_texture_object *texObj;
1022    GET_CURRENT_CONTEXT(ctx);
1023
1024    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1025    if (!texObj)
1026       return;
1027
1028    _mesa_texture_parameterf(ctx, texObj, pname, param, false);
1029 }
1030
1031 void GLAPIENTRY
1032 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
1033 {
1034    struct gl_texture_object *texObj;
1035    GET_CURRENT_CONTEXT(ctx);
1036
1037    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1038    if (!texObj)
1039       return;
1040
1041    _mesa_texture_parameterfv(ctx, texObj, pname, params, false);
1042 }
1043
1044 void GLAPIENTRY
1045 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
1046 {
1047    struct gl_texture_object *texObj;
1048    GET_CURRENT_CONTEXT(ctx);
1049
1050    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1051    if (!texObj)
1052       return;
1053
1054    _mesa_texture_parameteri(ctx, texObj, pname, param, false);
1055 }
1056
1057 void GLAPIENTRY
1058 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
1059 {
1060    struct gl_texture_object *texObj;
1061    GET_CURRENT_CONTEXT(ctx);
1062
1063    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1064    if (!texObj)
1065       return;
1066
1067    _mesa_texture_parameteriv(ctx, texObj, pname, params, false);
1068 }
1069
1070 /**
1071  * Set tex parameter to integer value(s).  Primarily intended to set
1072  * integer-valued texture border color (for integer-valued textures).
1073  * New in GL 3.0.
1074  */
1075 void GLAPIENTRY
1076 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
1077 {
1078    struct gl_texture_object *texObj;
1079    GET_CURRENT_CONTEXT(ctx);
1080
1081    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1082    if (!texObj)
1083       return;
1084
1085    _mesa_texture_parameterIiv(ctx, texObj, pname, params, false);
1086 }
1087
1088 /**
1089  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
1090  * uint-valued texture border color (for integer-valued textures).
1091  * New in GL 3.0
1092  */
1093 void GLAPIENTRY
1094 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
1095 {
1096    struct gl_texture_object *texObj;
1097    GET_CURRENT_CONTEXT(ctx);
1098
1099    texObj = get_texobj_by_target(ctx, target, GL_FALSE);
1100    if (!texObj)
1101       return;
1102
1103    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, false);
1104 }
1105
1106
1107 void GLAPIENTRY
1108 _mesa_TextureParameterfv(GLuint texture, GLenum pname, const GLfloat *params)
1109 {
1110    struct gl_texture_object *texObj;
1111    GET_CURRENT_CONTEXT(ctx);
1112
1113    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1114    if (!texObj) {
1115       /* User passed a non-generated name. */
1116       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterfv(texture)");
1117       return;
1118    }
1119
1120    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1121 }
1122
1123 void GLAPIENTRY
1124 _mesa_TextureParameterf(GLuint texture, GLenum pname, GLfloat param)
1125 {
1126    struct gl_texture_object *texObj;
1127    GET_CURRENT_CONTEXT(ctx);
1128
1129    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1130    if (!texObj) {
1131       /* User passed a non-generated name. */
1132       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterf(texture)");
1133       return;
1134    }
1135
1136    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1137 }
1138
1139 void GLAPIENTRY
1140 _mesa_TextureParameteri(GLuint texture, GLenum pname, GLint param)
1141 {
1142    struct gl_texture_object *texObj;
1143    GET_CURRENT_CONTEXT(ctx);
1144
1145    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1146    if (!texObj) {
1147       /* User passed a non-generated name. */
1148       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteri(texture)");
1149       return;
1150    }
1151
1152    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1153 }
1154
1155 void GLAPIENTRY
1156 _mesa_TextureParameteriv(GLuint texture, GLenum pname,
1157                          const GLint *params)
1158 {
1159    struct gl_texture_object *texObj;
1160    GET_CURRENT_CONTEXT(ctx);
1161
1162    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1163    if (!texObj) {
1164       /* User passed a non-generated name. */
1165       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteriv(texture)");
1166       return;
1167    }
1168
1169    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1170 }
1171
1172
1173 void GLAPIENTRY
1174 _mesa_TextureParameterIiv(GLuint texture, GLenum pname, const GLint *params)
1175 {
1176    struct gl_texture_object *texObj;
1177    GET_CURRENT_CONTEXT(ctx);
1178
1179    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1180    if (!texObj) {
1181       /* User passed a non-generated name. */
1182       _mesa_error(ctx, GL_INVALID_OPERATION,
1183                   "glTextureParameterIiv(texture)");
1184       return;
1185    }
1186
1187    _mesa_texture_parameterIiv(ctx, texObj, pname, params, true);
1188 }
1189
1190 void GLAPIENTRY
1191 _mesa_TextureParameterIuiv(GLuint texture, GLenum pname, const GLuint *params)
1192 {
1193    struct gl_texture_object *texObj;
1194    GET_CURRENT_CONTEXT(ctx);
1195
1196    texObj = get_texobj_by_name(ctx, texture, GL_FALSE);
1197    if (!texObj) {
1198       /* User passed a non-generated name. */
1199       _mesa_error(ctx, GL_INVALID_OPERATION,
1200                   "glTextureParameterIuiv(texture)");
1201       return;
1202    }
1203
1204    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, true);
1205 }
1206
1207 static GLboolean
1208 legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target,
1209                                      bool dsa)
1210 {
1211    /* Common targets for desktop GL and GLES 3.1. */
1212    switch (target) {
1213    case GL_TEXTURE_2D:
1214    case GL_TEXTURE_3D:
1215       return GL_TRUE;
1216    case GL_TEXTURE_2D_ARRAY_EXT:
1217       return ctx->Extensions.EXT_texture_array;
1218    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
1219    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1220    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1221    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1222    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1223    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1224       return ctx->Extensions.ARB_texture_cube_map;
1225    case GL_TEXTURE_2D_MULTISAMPLE:
1226    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1227       return ctx->Extensions.ARB_texture_multisample;
1228    }
1229
1230    if (!_mesa_is_desktop_gl(ctx))
1231       return GL_FALSE;
1232
1233    /* Rest of the desktop GL targets. */
1234    switch (target) {
1235    case GL_TEXTURE_1D:
1236    case GL_PROXY_TEXTURE_1D:
1237    case GL_PROXY_TEXTURE_2D:
1238    case GL_PROXY_TEXTURE_3D:
1239       return GL_TRUE;
1240    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1241       return ctx->Extensions.ARB_texture_cube_map;
1242    case GL_TEXTURE_CUBE_MAP_ARRAY_ARB:
1243    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB:
1244       return ctx->Extensions.ARB_texture_cube_map_array;
1245    case GL_TEXTURE_RECTANGLE_NV:
1246    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1247       return ctx->Extensions.NV_texture_rectangle;
1248    case GL_TEXTURE_1D_ARRAY_EXT:
1249    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1250    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1251       return ctx->Extensions.EXT_texture_array;
1252    case GL_TEXTURE_BUFFER:
1253       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1254        * but not in earlier versions that expose ARB_texture_buffer_object.
1255        *
1256        * From the ARB_texture_buffer_object spec:
1257        * "(7) Do buffer textures support texture parameters (TexParameter) or
1258        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1259        *
1260        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1261        *    explicit error language for any of these cases.  That is because
1262        *    each of the functions enumerate the set of valid <target>
1263        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1264        *    these cases means that target is not legal, and an INVALID_ENUM
1265        *    error should be generated."
1266        *
1267        * From the OpenGL 3.1 spec:
1268        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1269        */
1270       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
1271    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1272    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1273       return ctx->Extensions.ARB_texture_multisample;
1274
1275    /*  This is a valid target for dsa, but the OpenGL 4.5 core spec
1276     *  (30.10.2014) Section 8.11 Texture Queries says:
1277     *       "For GetTextureLevelParameter* only, texture may also be a cube
1278     *       map texture object.  In this case the query is always performed
1279     *       for face zero (the TEXTURE_CUBE_MAP_POSITIVE_X face), since there
1280     *       is no way to specify another face."
1281     */
1282    case GL_TEXTURE_CUBE_MAP:
1283       return dsa;
1284    default:
1285       return GL_FALSE;
1286    }
1287 }
1288
1289
1290 static void
1291 get_tex_level_parameter_image(struct gl_context *ctx,
1292                               const struct gl_texture_object *texObj,
1293                               GLenum target, GLint level,
1294                               GLenum pname, GLint *params,
1295                               bool dsa)
1296 {
1297    const struct gl_texture_image *img = NULL;
1298    struct gl_texture_image dummy_image;
1299    mesa_format texFormat;
1300    const char *suffix = dsa ? "ture" : "";
1301
1302    img = _mesa_select_tex_image(texObj, target, level);
1303    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1304       /* In case of undefined texture image return the default values.
1305        *
1306        * From OpenGL 4.0 spec, page 398:
1307        *    "The initial internal format of a texel array is RGBA
1308        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1309        *     use TEXTURE_INTERNAL_FORMAT."
1310        */
1311       memset(&dummy_image, 0, sizeof(dummy_image));
1312       dummy_image.TexFormat = MESA_FORMAT_NONE;
1313       dummy_image.InternalFormat = GL_RGBA;
1314       dummy_image._BaseFormat = GL_NONE;
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 (!_mesa_is_desktop_gl(ctx))
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_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
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       default:
1930          goto invalid_pname;
1931    }
1932
1933    /* no error if we get here */
1934    _mesa_unlock_context_textures(ctx);
1935    return;
1936
1937 invalid_pname:
1938    _mesa_unlock_context_textures(ctx);
1939    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameterfv(pname=0x%x)",
1940                dsa ? "ture" : "", pname);
1941 }
1942
1943
1944 static void
1945 get_tex_parameteriv(struct gl_context *ctx,
1946                     struct gl_texture_object *obj,
1947                     GLenum pname, GLint *params, bool dsa)
1948 {
1949    _mesa_lock_texture(ctx, obj);
1950    switch (pname) {
1951       case GL_TEXTURE_MAG_FILTER:
1952          *params = (GLint) obj->Sampler.MagFilter;
1953          break;
1954       case GL_TEXTURE_MIN_FILTER:
1955          *params = (GLint) obj->Sampler.MinFilter;
1956          break;
1957       case GL_TEXTURE_WRAP_S:
1958          *params = (GLint) obj->Sampler.WrapS;
1959          break;
1960       case GL_TEXTURE_WRAP_T:
1961          *params = (GLint) obj->Sampler.WrapT;
1962          break;
1963       case GL_TEXTURE_WRAP_R:
1964          *params = (GLint) obj->Sampler.WrapR;
1965          break;
1966       case GL_TEXTURE_BORDER_COLOR:
1967          if (!_mesa_is_desktop_gl(ctx))
1968             goto invalid_pname;
1969
1970          {
1971             GLfloat b[4];
1972             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
1973             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
1974             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
1975             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
1976             params[0] = FLOAT_TO_INT(b[0]);
1977             params[1] = FLOAT_TO_INT(b[1]);
1978             params[2] = FLOAT_TO_INT(b[2]);
1979             params[3] = FLOAT_TO_INT(b[3]);
1980          }
1981          break;
1982       case GL_TEXTURE_RESIDENT:
1983          if (ctx->API != API_OPENGL_COMPAT)
1984             goto invalid_pname;
1985
1986          *params = 1;
1987          break;
1988       case GL_TEXTURE_PRIORITY:
1989          if (ctx->API != API_OPENGL_COMPAT)
1990             goto invalid_pname;
1991
1992          *params = FLOAT_TO_INT(obj->Priority);
1993          break;
1994       case GL_TEXTURE_MIN_LOD:
1995          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
1996             goto invalid_pname;
1997          /* GL spec 'Data Conversions' section specifies that floating-point
1998           * value in integer Get function is rounded to nearest integer
1999           */
2000          *params = IROUND(obj->Sampler.MinLod);
2001          break;
2002       case GL_TEXTURE_MAX_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.MaxLod);
2009          break;
2010       case GL_TEXTURE_BASE_LEVEL:
2011          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2012             goto invalid_pname;
2013
2014          *params = obj->BaseLevel;
2015          break;
2016       case GL_TEXTURE_MAX_LEVEL:
2017          *params = obj->MaxLevel;
2018          break;
2019       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
2020          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
2021             goto invalid_pname;
2022          /* GL spec 'Data Conversions' section specifies that floating-point
2023           * value in integer Get function is rounded to nearest integer
2024           */
2025          *params = IROUND(obj->Sampler.MaxAnisotropy);
2026          break;
2027       case GL_GENERATE_MIPMAP_SGIS:
2028          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
2029             goto invalid_pname;
2030
2031          *params = (GLint) obj->GenerateMipmap;
2032          break;
2033       case GL_TEXTURE_COMPARE_MODE_ARB:
2034          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2035              && !_mesa_is_gles3(ctx))
2036             goto invalid_pname;
2037          *params = (GLint) obj->Sampler.CompareMode;
2038          break;
2039       case GL_TEXTURE_COMPARE_FUNC_ARB:
2040          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2041              && !_mesa_is_gles3(ctx))
2042             goto invalid_pname;
2043          *params = (GLint) obj->Sampler.CompareFunc;
2044          break;
2045       case GL_DEPTH_TEXTURE_MODE_ARB:
2046          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2047             goto invalid_pname;
2048          *params = (GLint) obj->DepthMode;
2049          break;
2050       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2051          if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_stencil_texturing)
2052             goto invalid_pname;
2053          *params = (GLint)
2054             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2055          break;
2056       case GL_TEXTURE_LOD_BIAS:
2057          if (_mesa_is_gles(ctx))
2058             goto invalid_pname;
2059
2060          /* GL spec 'Data Conversions' section specifies that floating-point
2061           * value in integer Get function is rounded to nearest integer
2062           */
2063          *params = IROUND(obj->Sampler.LodBias);
2064          break;
2065       case GL_TEXTURE_CROP_RECT_OES:
2066          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2067             goto invalid_pname;
2068
2069          params[0] = obj->CropRect[0];
2070          params[1] = obj->CropRect[1];
2071          params[2] = obj->CropRect[2];
2072          params[3] = obj->CropRect[3];
2073          break;
2074       case GL_TEXTURE_SWIZZLE_R_EXT:
2075       case GL_TEXTURE_SWIZZLE_G_EXT:
2076       case GL_TEXTURE_SWIZZLE_B_EXT:
2077       case GL_TEXTURE_SWIZZLE_A_EXT:
2078          if ((!_mesa_is_desktop_gl(ctx)
2079               || !ctx->Extensions.EXT_texture_swizzle)
2080              && !_mesa_is_gles3(ctx))
2081             goto invalid_pname;
2082          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2083          break;
2084
2085       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2086          if ((!_mesa_is_desktop_gl(ctx)
2087               || !ctx->Extensions.EXT_texture_swizzle)
2088              && !_mesa_is_gles3(ctx))
2089             goto invalid_pname;
2090          COPY_4V(params, obj->Swizzle);
2091          break;
2092
2093       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2094          if (!_mesa_is_desktop_gl(ctx)
2095              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2096             goto invalid_pname;
2097          *params = (GLint) obj->Sampler.CubeMapSeamless;
2098          break;
2099
2100       case GL_TEXTURE_IMMUTABLE_FORMAT:
2101          *params = (GLint) obj->Immutable;
2102          break;
2103
2104       case GL_TEXTURE_IMMUTABLE_LEVELS:
2105          if (_mesa_is_gles3(ctx) ||
2106              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
2107             *params = obj->ImmutableLevels;
2108          else
2109             goto invalid_pname;
2110          break;
2111
2112       case GL_TEXTURE_VIEW_MIN_LEVEL:
2113          if (!ctx->Extensions.ARB_texture_view)
2114             goto invalid_pname;
2115          *params = (GLint) obj->MinLevel;
2116          break;
2117
2118       case GL_TEXTURE_VIEW_NUM_LEVELS:
2119          if (!ctx->Extensions.ARB_texture_view)
2120             goto invalid_pname;
2121          *params = (GLint) obj->NumLevels;
2122          break;
2123
2124       case GL_TEXTURE_VIEW_MIN_LAYER:
2125          if (!ctx->Extensions.ARB_texture_view)
2126             goto invalid_pname;
2127          *params = (GLint) obj->MinLayer;
2128          break;
2129
2130       case GL_TEXTURE_VIEW_NUM_LAYERS:
2131          if (!ctx->Extensions.ARB_texture_view)
2132             goto invalid_pname;
2133          *params = (GLint) obj->NumLayers;
2134          break;
2135
2136       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2137          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2138             goto invalid_pname;
2139          *params = obj->RequiredTextureImageUnits;
2140          break;
2141
2142       case GL_TEXTURE_SRGB_DECODE_EXT:
2143          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2144             goto invalid_pname;
2145          *params = obj->Sampler.sRGBDecode;
2146          break;
2147
2148       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2149          if (!ctx->Extensions.ARB_shader_image_load_store)
2150             goto invalid_pname;
2151          *params = obj->ImageFormatCompatibilityType;
2152          break;
2153
2154       default:
2155          goto invalid_pname;
2156    }
2157
2158    /* no error if we get here */
2159    _mesa_unlock_texture(ctx, obj);
2160    return;
2161
2162 invalid_pname:
2163    _mesa_unlock_texture(ctx, obj);
2164    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameteriv(pname=0x%x)",
2165                dsa ? "ture" : "", pname);
2166 }
2167
2168 static void
2169 get_tex_parameterIiv(struct gl_context *ctx,
2170                      struct gl_texture_object *obj,
2171                      GLenum pname, GLint *params, bool dsa)
2172 {
2173    switch (pname) {
2174    case GL_TEXTURE_BORDER_COLOR:
2175       COPY_4V(params, obj->Sampler.BorderColor.i);
2176       break;
2177    default:
2178       get_tex_parameteriv(ctx, obj, pname, params, dsa);
2179    }
2180 }
2181
2182 static void
2183 get_tex_parameterIuiv(struct gl_context *ctx,
2184                       struct gl_texture_object *obj,
2185                       GLenum pname, GLuint *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       {
2193          GLint ip[4];
2194          get_tex_parameteriv(ctx, obj, pname, ip, dsa);
2195          params[0] = ip[0];
2196          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
2197              pname == GL_TEXTURE_CROP_RECT_OES) {
2198             params[1] = ip[1];
2199             params[2] = ip[2];
2200             params[3] = ip[3];
2201          }
2202       }
2203    }
2204 }
2205
2206 void GLAPIENTRY
2207 _mesa_GetTexParameterfv(GLenum target, GLenum pname, GLfloat *params)
2208 {
2209    struct gl_texture_object *obj;
2210    GET_CURRENT_CONTEXT(ctx);
2211
2212    obj = get_texobj_by_target(ctx, target, GL_TRUE);
2213    if (!obj)
2214       return;
2215
2216    get_tex_parameterfv(ctx, obj, pname, params, false);
2217 }
2218
2219 void GLAPIENTRY
2220 _mesa_GetTexParameteriv(GLenum target, GLenum pname, GLint *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_parameteriv(ctx, obj, pname, params, false);
2230 }
2231
2232 /** New in GL 3.0 */
2233 void GLAPIENTRY
2234 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
2235 {
2236    struct gl_texture_object *texObj;
2237    GET_CURRENT_CONTEXT(ctx);
2238
2239    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2240    if (!texObj)
2241       return;
2242
2243    get_tex_parameterIiv(ctx, texObj, pname, params, false);
2244 }
2245
2246
2247 /** New in GL 3.0 */
2248 void GLAPIENTRY
2249 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
2250 {
2251    struct gl_texture_object *texObj;
2252    GET_CURRENT_CONTEXT(ctx);
2253
2254    texObj = get_texobj_by_target(ctx, target, GL_TRUE);
2255    if (!texObj)
2256       return;
2257
2258    get_tex_parameterIuiv(ctx, texObj, pname, params, false);
2259 }
2260
2261
2262 void GLAPIENTRY
2263 _mesa_GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat *params)
2264 {
2265    struct gl_texture_object *obj;
2266    GET_CURRENT_CONTEXT(ctx);
2267
2268    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2269    if (!obj) {
2270       /* User passed a non-generated name. */
2271       _mesa_error(ctx, GL_INVALID_OPERATION,
2272                   "glGetTextureParameterfv(texture)");
2273       return;
2274    }
2275
2276    get_tex_parameterfv(ctx, obj, pname, params, true);
2277 }
2278
2279 void GLAPIENTRY
2280 _mesa_GetTextureParameteriv(GLuint texture, GLenum pname, GLint *params)
2281 {
2282    struct gl_texture_object *obj;
2283    GET_CURRENT_CONTEXT(ctx);
2284
2285    obj = get_texobj_by_name(ctx, texture, GL_TRUE);
2286    if (!obj) {
2287       /* User passed a non-generated name. */
2288       _mesa_error(ctx, GL_INVALID_OPERATION,
2289                   "glGetTextureParameteriv(texture)");
2290       return;
2291    }
2292
2293    get_tex_parameteriv(ctx, obj, pname, params, true);
2294 }
2295
2296 void GLAPIENTRY
2297 _mesa_GetTextureParameterIiv(GLuint texture, GLenum pname, GLint *params)
2298 {
2299    struct gl_texture_object *texObj;
2300    GET_CURRENT_CONTEXT(ctx);
2301
2302    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2303    if (!texObj) {
2304       /* User passed a non-generated name. */
2305       _mesa_error(ctx, GL_INVALID_OPERATION,
2306                   "glGetTextureParameterIiv(texture)");
2307       return;
2308    }
2309
2310    get_tex_parameterIiv(ctx, texObj, pname, params, true);
2311 }
2312
2313
2314 void GLAPIENTRY
2315 _mesa_GetTextureParameterIuiv(GLuint texture, GLenum pname, GLuint *params)
2316 {
2317    struct gl_texture_object *texObj;
2318    GET_CURRENT_CONTEXT(ctx);
2319
2320    texObj = get_texobj_by_name(ctx, texture, GL_TRUE);
2321    if (!texObj) {
2322       /* User passed a non-generated name. */
2323       _mesa_error(ctx, GL_INVALID_OPERATION,
2324                   "glGetTextureParameterIuiv(texture)");
2325       return;
2326    }
2327
2328    get_tex_parameterIuiv(ctx, texObj, pname, params, true);
2329 }