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 static bool
 118 is_texparameteri_target_valid(GLenum target)
 119 {
 120    switch (target) {
 121    case GL_TEXTURE_1D:
 122    case GL_TEXTURE_1D_ARRAY:
 123    case GL_TEXTURE_2D:
 124    case GL_TEXTURE_2D_ARRAY:
 125    case GL_TEXTURE_2D_MULTISAMPLE:
 126    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 127    case GL_TEXTURE_3D:
 128    case GL_TEXTURE_CUBE_MAP:
 129    case GL_TEXTURE_CUBE_MAP_ARRAY:
 130    case GL_TEXTURE_RECTANGLE:
 131       return true;
 132    default:
 133       return false;
 134    }
 135 }
 136
 137
 138 /**
 139  * Get current texture object for given name.
 140  * Return NULL if any error (and record the error).
 141  * Note that proxy targets are not accepted.
 142  * Only the glGetTexLevelParameter() functions accept proxy targets.
 143  */
 144 static struct gl_texture_object *
 145 get_texobj_by_name(struct gl_context *ctx, GLuint texture, const char *name)
 146 {
 147    struct gl_texture_object *texObj;
 148
 149    texObj = _mesa_lookup_texture_err(ctx, texture, name);
 150    if (!texObj)
 151       return NULL;
 152
 153    if (!is_texparameteri_target_valid(texObj->Target)) {
 154       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(target)", name);
 155       return NULL;
 156    }
 157
 158    return texObj;
 159 }
 160
 161
 162 /**
 163  * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
 164  * \return -1 if error.
 165  */
 166 static GLint
 167 comp_to_swizzle(GLenum comp)
 168 {
 169    switch (comp) {
 170    case GL_RED:
 171       return SWIZZLE_X;
 172    case GL_GREEN:
 173       return SWIZZLE_Y;
 174    case GL_BLUE:
 175       return SWIZZLE_Z;
 176    case GL_ALPHA:
 177       return SWIZZLE_W;
 178    case GL_ZERO:
 179       return SWIZZLE_ZERO;
 180    case GL_ONE:
 181       return SWIZZLE_ONE;
 182    default:
 183       return -1;
 184    }
 185 }
 186
 187
 188 static void
 189 set_swizzle_component(GLushort *swizzle, GLuint comp, GLuint swz)
 190 {
 191    assert(comp < 4);
 192    assert(swz <= SWIZZLE_NIL);
 193    {
 194       GLuint mask = 0x7 << (3 * comp);
 195       GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
 196       *swizzle = s;
 197    }
 198 }
 199
 200
 201 /**
 202  * This is called just prior to changing any texture object state which
 203  * will not affect texture completeness.
 204  */
 205 static inline void
 206 flush(struct gl_context *ctx)
 207 {
 208    FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
 209 }
 210
 211
 212 /**
 213  * This is called just prior to changing any texture object state which
 214  * could affect texture completeness (texture base level, max level).
 215  * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE_OBJECT
 216  * state flag and then mark the texture object as 'incomplete' so that any
 217  * per-texture derived state gets recomputed.
 218  */
 219 static inline void
 220 incomplete(struct gl_context *ctx, struct gl_texture_object *texObj)
 221 {
 222    FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
 223    _mesa_dirty_texobj(ctx, texObj);
 224 }
 225
 226
 227 GLboolean
 228 _mesa_target_allows_setting_sampler_parameters(GLenum target)
 229 {
 230    switch (target) {
 231    case GL_TEXTURE_2D_MULTISAMPLE:
 232    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
 233       return GL_FALSE;
 234
 235    default:
 236       return GL_TRUE;
 237    }
 238 }
 239
 240
 241 /**
 242  * Set an integer-valued texture parameter
 243  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 244  */
 245 static GLboolean
 246 set_tex_parameteri(struct gl_context *ctx,
 247                    struct gl_texture_object *texObj,
 248                    GLenum pname, const GLint *params, bool dsa)
 249 {
 250    const char *suffix = dsa ? "ture" : "";
 251
 252    if (texObj->HandleAllocated) {
 253       /* The ARB_bindless_texture spec says:
 254        *
 255        * "The error INVALID_OPERATION is generated by TexImage*, CopyTexImage*,
 256        * CompressedTexImage*, TexBuffer*, TexParameter*, as well as other
 257        * functions defined in terms of these, if the texture object to be
 258        * modified is referenced by one or more texture or image handles."
 259        */
 260       _mesa_error(ctx, GL_INVALID_OPERATION,
 261                   "glTex%sParameter(immutable texture)", suffix);
 262       return GL_FALSE;
 263    }
 264
 265    switch (pname) {
 266    case GL_TEXTURE_MIN_FILTER:
 267       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 268          goto invalid_enum;
 269
 270       if (texObj->Sampler.MinFilter == params[0])
 271          return GL_FALSE;
 272       switch (params[0]) {
 273       case GL_NEAREST:
 274       case GL_LINEAR:
 275          flush(ctx);
 276          texObj->Sampler.MinFilter = params[0];
 277          return GL_TRUE;
 278       case GL_NEAREST_MIPMAP_NEAREST:
 279       case GL_LINEAR_MIPMAP_NEAREST:
 280       case GL_NEAREST_MIPMAP_LINEAR:
 281       case GL_LINEAR_MIPMAP_LINEAR:
 282          if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
 283              texObj->Target != GL_TEXTURE_EXTERNAL_OES) {
 284             flush(ctx);
 285             texObj->Sampler.MinFilter = params[0];
 286             return GL_TRUE;
 287          }
 288          /* fall-through */
 289       default:
 290          goto invalid_param;
 291       }
 292       return GL_FALSE;
 293
 294    case GL_TEXTURE_MAG_FILTER:
 295       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 296          goto invalid_enum;
 297
 298       if (texObj->Sampler.MagFilter == params[0])
 299          return GL_FALSE;
 300       switch (params[0]) {
 301       case GL_NEAREST:
 302       case GL_LINEAR:
 303          flush(ctx); /* does not effect completeness */
 304          texObj->Sampler.MagFilter = params[0];
 305          return GL_TRUE;
 306       default:
 307          goto invalid_param;
 308       }
 309       return GL_FALSE;
 310
 311    case GL_TEXTURE_WRAP_S:
 312       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 313          goto invalid_enum;
 314
 315       if (texObj->Sampler.WrapS == params[0])
 316          return GL_FALSE;
 317       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 318          flush(ctx);
 319          texObj->Sampler.WrapS = params[0];
 320          return GL_TRUE;
 321       }
 322       return GL_FALSE;
 323
 324    case GL_TEXTURE_WRAP_T:
 325       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 326          goto invalid_enum;
 327
 328       if (texObj->Sampler.WrapT == params[0])
 329          return GL_FALSE;
 330       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 331          flush(ctx);
 332          texObj->Sampler.WrapT = params[0];
 333          return GL_TRUE;
 334       }
 335       return GL_FALSE;
 336
 337    case GL_TEXTURE_WRAP_R:
 338       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 339          goto invalid_enum;
 340
 341       if (texObj->Sampler.WrapR == params[0])
 342          return GL_FALSE;
 343       if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
 344          flush(ctx);
 345          texObj->Sampler.WrapR = params[0];
 346          return GL_TRUE;
 347       }
 348       return GL_FALSE;
 349
 350    case GL_TEXTURE_BASE_LEVEL:
 351       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 352          goto invalid_pname;
 353
 354       if (texObj->BaseLevel == params[0])
 355          return GL_FALSE;
 356
 357       /* Section 8.10 (Texture Parameters) of the OpenGL 4.5 Core Profile spec
 358        * says:
 359        *
 360        *    An INVALID_OPERATION error is generated if the effective target is
 361        *    TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY, or
 362        *    TEXTURE_RECTANGLE, and pname TEXTURE_BASE_LEVEL is set to a value
 363        *    other than zero.
 364        *
 365        * Note that section 3.8.8 (Texture Parameters) of the OpenGL 3.3 Core
 366        * Profile spec said:
 367        *
 368        *    The error INVALID_VALUE is generated if TEXTURE_BASE_LEVEL is set
 369        *    to any value other than zero.
 370        *
 371        * We take the 4.5 language as a correction to 3.3, and we implement
 372        * that on all GL versions.
 373        */
 374       if ((texObj->Target == GL_TEXTURE_2D_MULTISAMPLE ||
 375            texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY ||
 376            texObj->Target == GL_TEXTURE_RECTANGLE) && params[0] != 0)
 377          goto invalid_operation;
 378
 379       if (params[0] < 0) {
 380          _mesa_error(ctx, GL_INVALID_VALUE,
 381                      "glTex%sParameter(param=%d)", suffix, params[0]);
 382          return GL_FALSE;
 383       }
 384       incomplete(ctx, texObj);
 385
 386       /** See note about ARB_texture_storage below */
 387       if (texObj->Immutable)
 388          texObj->BaseLevel = MIN2(texObj->ImmutableLevels - 1, params[0]);
 389       else
 390          texObj->BaseLevel = params[0];
 391
 392       return GL_TRUE;
 393
 394    case GL_TEXTURE_MAX_LEVEL:
 395       if (texObj->MaxLevel == params[0])
 396          return GL_FALSE;
 397
 398       if (params[0] < 0 ||
 399           (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] > 0)) {
 400          _mesa_error(ctx, GL_INVALID_VALUE,
 401                      "glTex%sParameter(param=%d)", suffix,
 402                      params[0]);
 403          return GL_FALSE;
 404       }
 405       incomplete(ctx, texObj);
 406
 407       /** From ARB_texture_storage:
 408        * However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then level_base is
 409        * clamped to the range [0, <levels> - 1] and level_max is then clamped to
 410        * the range [level_base, <levels> - 1], where <levels> is the parameter
 411        * passed the call to TexStorage* for the texture object.
 412        */
 413       if (texObj->Immutable)
 414           texObj->MaxLevel = CLAMP(params[0], texObj->BaseLevel,
 415                                    texObj->ImmutableLevels - 1);
 416       else
 417          texObj->MaxLevel = params[0];
 418
 419       return GL_TRUE;
 420
 421    case GL_GENERATE_MIPMAP_SGIS:
 422       if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
 423          goto invalid_pname;
 424
 425       if (params[0] && texObj->Target == GL_TEXTURE_EXTERNAL_OES)
 426          goto invalid_param;
 427       if (texObj->GenerateMipmap != params[0]) {
 428          /* no flush() */
 429          texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
 430          return GL_TRUE;
 431       }
 432       return GL_FALSE;
 433
 434    case GL_TEXTURE_COMPARE_MODE_ARB:
 435       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 436           || _mesa_is_gles3(ctx)) {
 437
 438          if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 439             goto invalid_enum;
 440
 441          if (texObj->Sampler.CompareMode == params[0])
 442             return GL_FALSE;
 443          if (params[0] == GL_NONE ||
 444              params[0] == GL_COMPARE_R_TO_TEXTURE_ARB) {
 445             flush(ctx);
 446             texObj->Sampler.CompareMode = params[0];
 447             return GL_TRUE;
 448          }
 449          goto invalid_param;
 450       }
 451       goto invalid_pname;
 452
 453    case GL_TEXTURE_COMPARE_FUNC_ARB:
 454       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_shadow)
 455           || _mesa_is_gles3(ctx)) {
 456
 457          if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 458             goto invalid_enum;
 459
 460          if (texObj->Sampler.CompareFunc == params[0])
 461             return GL_FALSE;
 462          switch (params[0]) {
 463          case GL_LEQUAL:
 464          case GL_GEQUAL:
 465          case GL_EQUAL:
 466          case GL_NOTEQUAL:
 467          case GL_LESS:
 468          case GL_GREATER:
 469          case GL_ALWAYS:
 470          case GL_NEVER:
 471             flush(ctx);
 472             texObj->Sampler.CompareFunc = params[0];
 473             return GL_TRUE;
 474          default:
 475             goto invalid_param;
 476          }
 477       }
 478       goto invalid_pname;
 479
 480    case GL_DEPTH_TEXTURE_MODE_ARB:
 481       /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has never
 482        * existed in OpenGL ES.
 483        */
 484       if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_texture) {
 485          if (texObj->DepthMode == params[0])
 486             return GL_FALSE;
 487          if (params[0] == GL_LUMINANCE ||
 488              params[0] == GL_INTENSITY ||
 489              params[0] == GL_ALPHA ||
 490              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
 491             flush(ctx);
 492             texObj->DepthMode = params[0];
 493             return GL_TRUE;
 494          }
 495          goto invalid_param;
 496       }
 497       goto invalid_pname;
 498
 499    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 500       if (_mesa_has_ARB_stencil_texturing(ctx) || _mesa_is_gles31(ctx)) {
 501          bool stencil = params[0] == GL_STENCIL_INDEX;
 502          if (!stencil && params[0] != GL_DEPTH_COMPONENT)
 503             goto invalid_param;
 504
 505          if (texObj->StencilSampling == stencil)
 506             return GL_FALSE;
 507
 508          texObj->StencilSampling = stencil;
 509          return GL_TRUE;
 510       }
 511       goto invalid_pname;
 512
 513    case GL_TEXTURE_CROP_RECT_OES:
 514       if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
 515          goto invalid_pname;
 516
 517       texObj->CropRect[0] = params[0];
 518       texObj->CropRect[1] = params[1];
 519       texObj->CropRect[2] = params[2];
 520       texObj->CropRect[3] = params[3];
 521       return GL_TRUE;
 522
 523    case GL_TEXTURE_SWIZZLE_R_EXT:
 524    case GL_TEXTURE_SWIZZLE_G_EXT:
 525    case GL_TEXTURE_SWIZZLE_B_EXT:
 526    case GL_TEXTURE_SWIZZLE_A_EXT:
 527       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 528           || _mesa_is_gles3(ctx)) {
 529          const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
 530          const GLint swz = comp_to_swizzle(params[0]);
 531          if (swz < 0) {
 532             _mesa_error(ctx, GL_INVALID_ENUM,
 533                         "glTex%sParameter(swizzle 0x%x)", suffix, params[0]);
 534             return GL_FALSE;
 535          }
 536          assert(comp < 4);
 537
 538          flush(ctx);
 539          texObj->Swizzle[comp] = params[0];
 540          set_swizzle_component(&texObj->_Swizzle, comp, swz);
 541          return GL_TRUE;
 542       }
 543       goto invalid_pname;
 544
 545    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 546       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_swizzle)
 547           || _mesa_is_gles3(ctx)) {
 548          GLuint comp;
 549          flush(ctx);
 550          for (comp = 0; comp < 4; comp++) {
 551             const GLint swz = comp_to_swizzle(params[comp]);
 552             if (swz >= 0) {
 553                texObj->Swizzle[comp] = params[comp];
 554                set_swizzle_component(&texObj->_Swizzle, comp, swz);
 555             }
 556             else {
 557                _mesa_error(ctx, GL_INVALID_ENUM,
 558                            "glTex%sParameter(swizzle 0x%x)",
 559                            suffix, params[comp]);
 560                return GL_FALSE;
 561             }
 562          }
 563          return GL_TRUE;
 564       }
 565       goto invalid_pname;
 566
 567    case GL_TEXTURE_SRGB_DECODE_EXT:
 568       if (ctx->Extensions.EXT_texture_sRGB_decode) {
 569          GLenum decode = params[0];
 570
 571          if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 572             goto invalid_enum;
 573
 574          if (decode == GL_DECODE_EXT || decode == GL_SKIP_DECODE_EXT) {
 575             if (texObj->Sampler.sRGBDecode != decode) {
 576                flush(ctx);
 577                texObj->Sampler.sRGBDecode = decode;
 578             }
 579             return GL_TRUE;
 580          }
 581       }
 582       goto invalid_pname;
 583
 584    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 585       if (_mesa_is_desktop_gl(ctx)
 586           && ctx->Extensions.AMD_seamless_cubemap_per_texture) {
 587          GLenum param = params[0];
 588
 589          if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 590             goto invalid_enum;
 591
 592          if (param != GL_TRUE && param != GL_FALSE) {
 593             goto invalid_param;
 594          }
 595          if (param != texObj->Sampler.CubeMapSeamless) {
 596             flush(ctx);
 597             texObj->Sampler.CubeMapSeamless = param;
 598          }
 599          return GL_TRUE;
 600       }
 601       goto invalid_pname;
 602
 603    case GL_TEXTURE_TILING_EXT:
 604       if (ctx->Extensions.EXT_memory_object) {
 605          texObj->TextureTiling = params[0];
 606
 607          return GL_TRUE;
 608       }
 609       goto invalid_pname;
 610
 611    default:
 612       goto invalid_pname;
 613    }
 614
 615 invalid_pname:
 616    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 617                suffix, _mesa_enum_to_string(pname));
 618    return GL_FALSE;
 619
 620 invalid_param:
 621    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(param=%s)",
 622                suffix, _mesa_enum_to_string(params[0]));
 623    return GL_FALSE;
 624
 625 invalid_operation:
 626    _mesa_error(ctx, GL_INVALID_OPERATION, "glTex%sParameter(pname=%s)",
 627                suffix, _mesa_enum_to_string(pname));
 628    return GL_FALSE;
 629
 630 invalid_enum:
 631    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 632                suffix, _mesa_enum_to_string(pname));
 633    return GL_FALSE;
 634 }
 635
 636
 637 /**
 638  * Set a float-valued texture parameter
 639  * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
 640  */
 641 static GLboolean
 642 set_tex_parameterf(struct gl_context *ctx,
 643                    struct gl_texture_object *texObj,
 644                    GLenum pname, const GLfloat *params, bool dsa)
 645 {
 646    const char *suffix = dsa ? "ture" : "";
 647
 648    if (texObj->HandleAllocated) {
 649       /* The ARB_bindless_texture spec says:
 650        *
 651        * "The error INVALID_OPERATION is generated by TexImage*, CopyTexImage*,
 652        * CompressedTexImage*, TexBuffer*, TexParameter*, as well as other
 653        * functions defined in terms of these, if the texture object to be
 654        * modified is referenced by one or more texture or image handles."
 655        */
 656       _mesa_error(ctx, GL_INVALID_OPERATION,
 657                   "glTex%sParameter(immutable texture)", suffix);
 658       return GL_FALSE;
 659    }
 660
 661    switch (pname) {
 662    case GL_TEXTURE_MIN_LOD:
 663       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 664          goto invalid_pname;
 665
 666       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 667          goto invalid_enum;
 668
 669       if (texObj->Sampler.MinLod == params[0])
 670          return GL_FALSE;
 671       flush(ctx);
 672       texObj->Sampler.MinLod = params[0];
 673       return GL_TRUE;
 674
 675    case GL_TEXTURE_MAX_LOD:
 676       if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
 677          goto invalid_pname;
 678
 679       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 680          goto invalid_enum;
 681
 682       if (texObj->Sampler.MaxLod == params[0])
 683          return GL_FALSE;
 684       flush(ctx);
 685       texObj->Sampler.MaxLod = params[0];
 686       return GL_TRUE;
 687
 688    case GL_TEXTURE_PRIORITY:
 689       if (ctx->API != API_OPENGL_COMPAT)
 690          goto invalid_pname;
 691
 692       flush(ctx);
 693       texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
 694       return GL_TRUE;
 695
 696    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 697       if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 698          if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 699             goto invalid_enum;
 700
 701          if (texObj->Sampler.MaxAnisotropy == params[0])
 702             return GL_FALSE;
 703          if (params[0] < 1.0F) {
 704             _mesa_error(ctx, GL_INVALID_VALUE, "glTex%sParameter(param)",
 705                         suffix);
 706             return GL_FALSE;
 707          }
 708          flush(ctx);
 709          /* clamp to max, that's what NVIDIA does */
 710          texObj->Sampler.MaxAnisotropy = MIN2(params[0],
 711                                       ctx->Const.MaxTextureMaxAnisotropy);
 712          return GL_TRUE;
 713       }
 714       else {
 715          static GLuint count = 0;
 716          if (count++ < 10)
 717             goto invalid_pname;
 718       }
 719       return GL_FALSE;
 720
 721    case GL_TEXTURE_LOD_BIAS:
 722       /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias. */
 723       if (_mesa_is_gles(ctx))
 724          goto invalid_pname;
 725
 726       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 727          goto invalid_enum;
 728
 729       if (texObj->Sampler.LodBias != params[0]) {
 730          flush(ctx);
 731          texObj->Sampler.LodBias = params[0];
 732          return GL_TRUE;
 733       }
 734       break;
 735
 736    case GL_TEXTURE_BORDER_COLOR:
 737       /* Border color exists in desktop OpenGL since 1.0 for GL_CLAMP.  In
 738        * OpenGL ES 2.0+, it only exists in when GL_OES_texture_border_clamp is
 739        * enabled.  It is never available in OpenGL ES 1.x.
 740        *
 741        * FIXME: Every driver that supports GLES2 has this extension.  Elide
 742        * the check?
 743        */
 744       if (ctx->API == API_OPENGLES ||
 745           (ctx->API == API_OPENGLES2 &&
 746            !ctx->Extensions.ARB_texture_border_clamp))
 747          goto invalid_pname;
 748
 749       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target))
 750          goto invalid_enum;
 751
 752       flush(ctx);
 753       /* ARB_texture_float disables clamping */
 754       if (ctx->Extensions.ARB_texture_float) {
 755          texObj->Sampler.BorderColor.f[RCOMP] = params[0];
 756          texObj->Sampler.BorderColor.f[GCOMP] = params[1];
 757          texObj->Sampler.BorderColor.f[BCOMP] = params[2];
 758          texObj->Sampler.BorderColor.f[ACOMP] = params[3];
 759       } else {
 760          texObj->Sampler.BorderColor.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);
 761          texObj->Sampler.BorderColor.f[GCOMP] = CLAMP(params[1], 0.0F, 1.0F);
 762          texObj->Sampler.BorderColor.f[BCOMP] = CLAMP(params[2], 0.0F, 1.0F);
 763          texObj->Sampler.BorderColor.f[ACOMP] = CLAMP(params[3], 0.0F, 1.0F);
 764       }
 765       return GL_TRUE;
 766
 767    case GL_TEXTURE_TILING_EXT:
 768       if (ctx->Extensions.EXT_memory_object) {
 769          texObj->TextureTiling = params[0];
 770          return GL_TRUE;
 771       }
 772       goto invalid_pname;
 773
 774    default:
 775       goto invalid_pname;
 776    }
 777    return GL_FALSE;
 778
 779 invalid_pname:
 780    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 781                suffix, _mesa_enum_to_string(pname));
 782    return GL_FALSE;
 783
 784 invalid_enum:
 785    _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameter(pname=%s)",
 786                suffix, _mesa_enum_to_string(pname));
 787    return GL_FALSE;
 788 }
 789
 790
 791 void
 792 _mesa_texture_parameterf(struct gl_context *ctx,
 793                          struct gl_texture_object *texObj,
 794                          GLenum pname, GLfloat param, bool dsa)
 795 {
 796    GLboolean need_update;
 797
 798    switch (pname) {
 799    case GL_TEXTURE_MIN_FILTER:
 800    case GL_TEXTURE_MAG_FILTER:
 801    case GL_TEXTURE_WRAP_S:
 802    case GL_TEXTURE_WRAP_T:
 803    case GL_TEXTURE_WRAP_R:
 804    case GL_TEXTURE_BASE_LEVEL:
 805    case GL_TEXTURE_MAX_LEVEL:
 806    case GL_GENERATE_MIPMAP_SGIS:
 807    case GL_TEXTURE_COMPARE_MODE_ARB:
 808    case GL_TEXTURE_COMPARE_FUNC_ARB:
 809    case GL_DEPTH_TEXTURE_MODE_ARB:
 810    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 811    case GL_TEXTURE_SRGB_DECODE_EXT:
 812    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 813    case GL_TEXTURE_SWIZZLE_R_EXT:
 814    case GL_TEXTURE_SWIZZLE_G_EXT:
 815    case GL_TEXTURE_SWIZZLE_B_EXT:
 816    case GL_TEXTURE_SWIZZLE_A_EXT:
 817       {
 818          GLint p[4];
 819          p[0] = (param > 0) ?
 820                 ((param > INT_MAX) ? INT_MAX : (GLint) (param + 0.5)) :
 821                 ((param < INT_MIN) ? INT_MIN : (GLint) (param - 0.5));
 822
 823          p[1] = p[2] = p[3] = 0;
 824          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 825       }
 826       break;
 827    case GL_TEXTURE_BORDER_COLOR:
 828    case GL_TEXTURE_SWIZZLE_RGBA:
 829       _mesa_error(ctx, GL_INVALID_ENUM, "glTex%sParameterf(non-scalar pname)",
 830                   dsa ? "ture" : "");
 831       return;
 832    default:
 833       {
 834          /* this will generate an error if pname is illegal */
 835          GLfloat p[4];
 836          p[0] = param;
 837          p[1] = p[2] = p[3] = 0.0F;
 838          need_update = set_tex_parameterf(ctx, texObj, pname, p, dsa);
 839       }
 840    }
 841
 842    if (ctx->Driver.TexParameter && need_update) {
 843       ctx->Driver.TexParameter(ctx, texObj, pname);
 844    }
 845 }
 846
 847
 848 void
 849 _mesa_texture_parameterfv(struct gl_context *ctx,
 850                           struct gl_texture_object *texObj,
 851                           GLenum pname, const GLfloat *params, bool dsa)
 852 {
 853    GLboolean need_update;
 854    switch (pname) {
 855    case GL_TEXTURE_MIN_FILTER:
 856    case GL_TEXTURE_MAG_FILTER:
 857    case GL_TEXTURE_WRAP_S:
 858    case GL_TEXTURE_WRAP_T:
 859    case GL_TEXTURE_WRAP_R:
 860    case GL_TEXTURE_BASE_LEVEL:
 861    case GL_TEXTURE_MAX_LEVEL:
 862    case GL_GENERATE_MIPMAP_SGIS:
 863    case GL_TEXTURE_COMPARE_MODE_ARB:
 864    case GL_TEXTURE_COMPARE_FUNC_ARB:
 865    case GL_DEPTH_TEXTURE_MODE_ARB:
 866    case GL_DEPTH_STENCIL_TEXTURE_MODE:
 867    case GL_TEXTURE_SRGB_DECODE_EXT:
 868    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
 869       {
 870          /* convert float param to int */
 871          GLint p[4];
 872          p[0] = (GLint) params[0];
 873          p[1] = p[2] = p[3] = 0;
 874          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 875       }
 876       break;
 877    case GL_TEXTURE_CROP_RECT_OES:
 878       {
 879          /* convert float params to int */
 880          GLint iparams[4];
 881          iparams[0] = (GLint) params[0];
 882          iparams[1] = (GLint) params[1];
 883          iparams[2] = (GLint) params[2];
 884          iparams[3] = (GLint) params[3];
 885          need_update = set_tex_parameteri(ctx, texObj, pname, iparams, dsa);
 886       }
 887       break;
 888    case GL_TEXTURE_SWIZZLE_R_EXT:
 889    case GL_TEXTURE_SWIZZLE_G_EXT:
 890    case GL_TEXTURE_SWIZZLE_B_EXT:
 891    case GL_TEXTURE_SWIZZLE_A_EXT:
 892    case GL_TEXTURE_SWIZZLE_RGBA_EXT:
 893       {
 894          GLint p[4] = {0, 0, 0, 0};
 895          p[0] = (GLint) params[0];
 896          if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT) {
 897             p[1] = (GLint) params[1];
 898             p[2] = (GLint) params[2];
 899             p[3] = (GLint) params[3];
 900          }
 901          need_update = set_tex_parameteri(ctx, texObj, pname, p, dsa);
 902       }
 903       break;
 904    default:
 905       /* this will generate an error if pname is illegal */
 906       need_update = set_tex_parameterf(ctx, texObj, pname, params, dsa);
 907    }
 908
 909    if (ctx->Driver.TexParameter && need_update) {
 910       ctx->Driver.TexParameter(ctx, texObj, pname);
 911    }
 912 }
 913
 914
 915 void
 916 _mesa_texture_parameteri(struct gl_context *ctx,
 917                          struct gl_texture_object *texObj,
 918                          GLenum pname, GLint param, bool dsa)
 919 {
 920    GLboolean need_update;
 921    switch (pname) {
 922    case GL_TEXTURE_MIN_LOD:
 923    case GL_TEXTURE_MAX_LOD:
 924    case GL_TEXTURE_PRIORITY:
 925    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 926    case GL_TEXTURE_LOD_BIAS:
 927    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 928       {
 929          GLfloat fparam[4];
 930          fparam[0] = (GLfloat) param;
 931          fparam[1] = fparam[2] = fparam[3] = 0.0F;
 932          /* convert int param to float */
 933          need_update = set_tex_parameterf(ctx, texObj, pname, fparam, dsa);
 934       }
 935       break;
 936    case GL_TEXTURE_BORDER_COLOR:
 937    case GL_TEXTURE_SWIZZLE_RGBA:
 938       {
 939          _mesa_error(ctx, GL_INVALID_ENUM,
 940                      "glTex%sParameteri(non-scalar pname)",
 941                      dsa ? "ture" : "");
 942          return;
 943       }
 944    default:
 945       /* this will generate an error if pname is illegal */
 946       {
 947          GLint iparam[4];
 948          iparam[0] = param;
 949          iparam[1] = iparam[2] = iparam[3] = 0;
 950          need_update = set_tex_parameteri(ctx, texObj, pname, iparam, dsa);
 951       }
 952    }
 953
 954    if (ctx->Driver.TexParameter && need_update) {
 955       ctx->Driver.TexParameter(ctx, texObj, pname);
 956    }
 957 }
 958
 959
 960 void
 961 _mesa_texture_parameteriv(struct gl_context *ctx,
 962                           struct gl_texture_object *texObj,
 963                           GLenum pname, const GLint *params, bool dsa)
 964 {
 965    GLboolean need_update;
 966
 967    switch (pname) {
 968    case GL_TEXTURE_BORDER_COLOR:
 969       {
 970          /* convert int params to float */
 971          GLfloat fparams[4];
 972          fparams[0] = INT_TO_FLOAT(params[0]);
 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          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 977       }
 978       break;
 979    case GL_TEXTURE_MIN_LOD:
 980    case GL_TEXTURE_MAX_LOD:
 981    case GL_TEXTURE_PRIORITY:
 982    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 983    case GL_TEXTURE_LOD_BIAS:
 984    case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
 985       {
 986          /* convert int param to float */
 987          GLfloat fparams[4];
 988          fparams[0] = (GLfloat) params[0];
 989          fparams[1] = fparams[2] = fparams[3] = 0.0F;
 990          need_update = set_tex_parameterf(ctx, texObj, pname, fparams, dsa);
 991       }
 992       break;
 993    default:
 994       /* this will generate an error if pname is illegal */
 995       need_update = set_tex_parameteri(ctx, texObj, pname, params, dsa);
 996    }
 997
 998    if (ctx->Driver.TexParameter && need_update) {
 999       ctx->Driver.TexParameter(ctx, texObj, pname);
1000    }
1001 }
1002
1003 void
1004 _mesa_texture_parameterIiv(struct gl_context *ctx,
1005                            struct gl_texture_object *texObj,
1006                            GLenum pname, const GLint *params, bool dsa)
1007 {
1008    switch (pname) {
1009    case GL_TEXTURE_BORDER_COLOR:
1010       if (texObj->HandleAllocated) {
1011          _mesa_error(ctx, GL_INVALID_OPERATION,
1012                      "glTextureParameterIiv(immutable texture)");
1013          return;
1014       }
1015
1016       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target)) {
1017          _mesa_error(ctx, GL_INVALID_ENUM, "glTextureParameterIiv(texture)");
1018          return;
1019       }
1020       FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
1021       /* set the integer-valued border color */
1022       COPY_4V(texObj->Sampler.BorderColor.i, params);
1023       break;
1024    default:
1025       _mesa_texture_parameteriv(ctx, texObj, pname, params, dsa);
1026       break;
1027    }
1028    /* XXX no driver hook for TexParameterIiv() yet */
1029 }
1030
1031 void
1032 _mesa_texture_parameterIuiv(struct gl_context *ctx,
1033                             struct gl_texture_object *texObj,
1034                             GLenum pname, const GLuint *params, bool dsa)
1035 {
1036    switch (pname) {
1037    case GL_TEXTURE_BORDER_COLOR:
1038       if (texObj->HandleAllocated) {
1039          _mesa_error(ctx, GL_INVALID_OPERATION,
1040                      "glTextureParameterIuiv(immutable texture)");
1041          return;
1042       }
1043
1044       if (!_mesa_target_allows_setting_sampler_parameters(texObj->Target)) {
1045          _mesa_error(ctx, GL_INVALID_ENUM, "glTextureParameterIuiv(texture)");
1046          return;
1047       }
1048       FLUSH_VERTICES(ctx, _NEW_TEXTURE_OBJECT);
1049       /* set the unsigned integer-valued border color */
1050       COPY_4V(texObj->Sampler.BorderColor.ui, params);
1051       break;
1052    default:
1053       _mesa_texture_parameteriv(ctx, texObj, pname, (const GLint *) params,
1054                                 dsa);
1055       break;
1056    }
1057    /* XXX no driver hook for TexParameterIuiv() yet */
1058 }
1059
1060 void GLAPIENTRY
1061 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
1062 {
1063    struct gl_texture_object *texObj;
1064    GET_CURRENT_CONTEXT(ctx);
1065
1066    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1067                                                    ctx->Texture.CurrentUnit,
1068                                                    false,
1069                                                    "glTexParameterf");
1070    if (!texObj)
1071       return;
1072
1073    _mesa_texture_parameterf(ctx, texObj, pname, param, false);
1074 }
1075
1076 void GLAPIENTRY
1077 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
1078 {
1079    struct gl_texture_object *texObj;
1080    GET_CURRENT_CONTEXT(ctx);
1081
1082    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1083                                                    ctx->Texture.CurrentUnit,
1084                                                    false,
1085                                                    "glTexParameterfv");
1086    if (!texObj)
1087       return;
1088
1089    _mesa_texture_parameterfv(ctx, texObj, pname, params, false);
1090 }
1091
1092 void GLAPIENTRY
1093 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
1094 {
1095    struct gl_texture_object *texObj;
1096    GET_CURRENT_CONTEXT(ctx);
1097
1098    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1099                                                    ctx->Texture.CurrentUnit,
1100                                                    false,
1101                                                    "glTexParameteri");
1102    if (!texObj)
1103       return;
1104
1105    _mesa_texture_parameteri(ctx, texObj, pname, param, false);
1106 }
1107
1108 void GLAPIENTRY
1109 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
1110 {
1111    struct gl_texture_object *texObj;
1112    GET_CURRENT_CONTEXT(ctx);
1113
1114    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1115                                                    ctx->Texture.CurrentUnit,
1116                                                    false,
1117                                                    "glTexParameteriv");
1118    if (!texObj)
1119       return;
1120
1121    _mesa_texture_parameteriv(ctx, texObj, pname, params, false);
1122 }
1123
1124 /**
1125  * Set tex parameter to integer value(s).  Primarily intended to set
1126  * integer-valued texture border color (for integer-valued textures).
1127  * New in GL 3.0.
1128  */
1129 void GLAPIENTRY
1130 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
1131 {
1132    struct gl_texture_object *texObj;
1133    GET_CURRENT_CONTEXT(ctx);
1134
1135    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1136                                                    ctx->Texture.CurrentUnit,
1137                                                    false,
1138                                                    "glTexParameterIiv");
1139    if (!texObj)
1140       return;
1141
1142    _mesa_texture_parameterIiv(ctx, texObj, pname, params, false);
1143 }
1144
1145 /**
1146  * Set tex parameter to unsigned integer value(s).  Primarily intended to set
1147  * uint-valued texture border color (for integer-valued textures).
1148  * New in GL 3.0
1149  */
1150 void GLAPIENTRY
1151 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
1152 {
1153    struct gl_texture_object *texObj;
1154    GET_CURRENT_CONTEXT(ctx);
1155
1156    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1157                                                    ctx->Texture.CurrentUnit,
1158                                                    false,
1159                                                    "glTexParameterIuiv");
1160    if (!texObj)
1161       return;
1162
1163    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, false);
1164 }
1165
1166 void GLAPIENTRY
1167 _mesa_TextureParameterfvEXT(GLuint texture, GLenum target, GLenum pname, const GLfloat *params)
1168 {
1169    struct gl_texture_object *texObj;
1170    GET_CURRENT_CONTEXT(ctx);
1171
1172    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
1173                                            "glTextureParameterfvEXT");
1174    if (!texObj)
1175       return;
1176
1177    if (!is_texparameteri_target_valid(texObj->Target)) {
1178       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterfvEXT");
1179       return;
1180    }
1181
1182    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1183 }
1184
1185 void GLAPIENTRY
1186 _mesa_TextureParameterfv(GLuint texture, GLenum pname, const GLfloat *params)
1187 {
1188    struct gl_texture_object *texObj;
1189    GET_CURRENT_CONTEXT(ctx);
1190
1191    texObj = get_texobj_by_name(ctx, texture, "glTextureParameterfv");
1192    if (!texObj)
1193       return;
1194
1195    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1196 }
1197
1198 void GLAPIENTRY
1199 _mesa_MultiTexParameterfvEXT(GLenum texunit, GLenum target, GLenum pname, const GLfloat *params)
1200 {
1201    struct gl_texture_object *texObj;
1202    GET_CURRENT_CONTEXT(ctx);
1203
1204    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1205                                                    texunit - GL_TEXTURE0,
1206                                                    false,
1207                                                    "glMultiTexParameterfvEXT");
1208    if (!texObj)
1209       return;
1210
1211    if (!is_texparameteri_target_valid(texObj->Target)) {
1212       _mesa_error(ctx, GL_INVALID_OPERATION, "glMultiTexParameterifvEXT(target)");
1213       return;
1214    }
1215
1216    _mesa_texture_parameterfv(ctx, texObj, pname, params, true);
1217 }
1218
1219 void GLAPIENTRY
1220 _mesa_TextureParameterfEXT(GLuint texture, GLenum target, GLenum pname, GLfloat param)
1221 {
1222    struct gl_texture_object *texObj;
1223    GET_CURRENT_CONTEXT(ctx);
1224
1225    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
1226                                            "glTextureParameterfEXT");
1227    if (!texObj)
1228       return;
1229
1230    if (!is_texparameteri_target_valid(texObj->Target)) {
1231       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterfEXT");
1232       return;
1233    }
1234
1235    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1236 }
1237
1238 void GLAPIENTRY
1239 _mesa_MultiTexParameterfEXT(GLenum texunit, GLenum target, GLenum pname,
1240                             GLfloat param)
1241 {
1242    struct gl_texture_object *texObj;
1243    GET_CURRENT_CONTEXT(ctx);
1244
1245    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1246                                                    texunit - GL_TEXTURE0,
1247                                                    false,
1248                                                    "glMultiTexParameterfEXT");
1249    if (!texObj)
1250       return;
1251
1252    if (!is_texparameteri_target_valid(texObj->Target)) {
1253       _mesa_error(ctx, GL_INVALID_OPERATION, "glMultiTexParameterfEXT");
1254       return;
1255    }
1256
1257    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1258 }
1259
1260 void GLAPIENTRY
1261 _mesa_TextureParameterf(GLuint texture, GLenum pname, GLfloat param)
1262 {
1263    struct gl_texture_object *texObj;
1264    GET_CURRENT_CONTEXT(ctx);
1265
1266    texObj = get_texobj_by_name(ctx, texture, "glTextureParameterf");
1267    if (!texObj)
1268       return;
1269
1270    _mesa_texture_parameterf(ctx, texObj, pname, param, true);
1271 }
1272
1273 void GLAPIENTRY
1274 _mesa_TextureParameteriEXT(GLuint texture, GLenum target, GLenum pname, GLint param)
1275 {
1276    struct gl_texture_object *texObj;
1277    GET_CURRENT_CONTEXT(ctx);
1278
1279    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
1280                                            "glTextureParameteriEXT");
1281    if (!texObj)
1282       return;
1283
1284    if (!is_texparameteri_target_valid(texObj->Target)) {
1285       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameteriEXT(target)");
1286       return;
1287    }
1288
1289    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1290 }
1291
1292 void GLAPIENTRY
1293 _mesa_MultiTexParameteriEXT(GLenum texunit, GLenum target, GLenum pname,
1294                             GLint param)
1295 {
1296    struct gl_texture_object *texObj;
1297    GET_CURRENT_CONTEXT(ctx);
1298
1299    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1300                                                    texunit - GL_TEXTURE0,
1301                                                    false,
1302                                                    "glMultiTexParameteriEXT");
1303    if (!texObj)
1304       return;
1305
1306    if (!is_texparameteri_target_valid(texObj->Target)) {
1307       _mesa_error(ctx, GL_INVALID_OPERATION, "glMultiTexParameteriEXT(target)");
1308       return;
1309    }
1310
1311    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1312 }
1313
1314 void GLAPIENTRY
1315 _mesa_TextureParameteri(GLuint texture, GLenum pname, GLint param)
1316 {
1317    struct gl_texture_object *texObj;
1318    GET_CURRENT_CONTEXT(ctx);
1319
1320    texObj = get_texobj_by_name(ctx, texture, "glTextureParameteri");
1321    if (!texObj)
1322       return;
1323
1324    _mesa_texture_parameteri(ctx, texObj, pname, param, true);
1325 }
1326
1327 void GLAPIENTRY
1328 _mesa_TextureParameterivEXT(GLuint texture, GLenum target, GLenum pname,
1329                          const GLint *params)
1330 {
1331    struct gl_texture_object *texObj;
1332    GET_CURRENT_CONTEXT(ctx);
1333
1334    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
1335                                            "glTextureParameterivEXT");
1336    if (!texObj)
1337       return;
1338
1339    if (!is_texparameteri_target_valid(texObj->Target)) {
1340       _mesa_error(ctx, GL_INVALID_OPERATION, "glTextureParameterivEXT(target)");
1341       return;
1342    }
1343
1344    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1345 }
1346
1347 void GLAPIENTRY
1348 _mesa_MultiTexParameterivEXT(GLenum texunit, GLenum target, GLenum pname,
1349                              const GLint *params)
1350 {
1351    struct gl_texture_object *texObj;
1352    GET_CURRENT_CONTEXT(ctx);
1353
1354    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1355                                                    texunit - GL_TEXTURE0,
1356                                                    false,
1357                                                    "glMultiTexParameterivEXT");
1358    if (!texObj)
1359       return;
1360
1361    if (!is_texparameteri_target_valid(texObj->Target)) {
1362       _mesa_error(ctx, GL_INVALID_OPERATION, "glMultiTexParameterivEXT(target)");
1363       return;
1364    }
1365
1366    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1367 }
1368
1369 void GLAPIENTRY
1370 _mesa_TextureParameteriv(GLuint texture, GLenum pname,
1371                          const GLint *params)
1372 {
1373    struct gl_texture_object *texObj;
1374    GET_CURRENT_CONTEXT(ctx);
1375
1376    texObj = get_texobj_by_name(ctx, texture, "glTextureParameteriv");
1377    if (!texObj)
1378       return;
1379
1380    _mesa_texture_parameteriv(ctx, texObj, pname, params, true);
1381 }
1382
1383
1384 void GLAPIENTRY
1385 _mesa_TextureParameterIiv(GLuint texture, GLenum pname, const GLint *params)
1386 {
1387    struct gl_texture_object *texObj;
1388    GET_CURRENT_CONTEXT(ctx);
1389
1390    texObj = get_texobj_by_name(ctx, texture, "glTextureParameterIiv");
1391    if (!texObj)
1392       return;
1393
1394    _mesa_texture_parameterIiv(ctx, texObj, pname, params, true);
1395 }
1396
1397 void GLAPIENTRY
1398 _mesa_TextureParameterIuiv(GLuint texture, GLenum pname, const GLuint *params)
1399 {
1400    struct gl_texture_object *texObj;
1401    GET_CURRENT_CONTEXT(ctx);
1402
1403    texObj = get_texobj_by_name(ctx, texture, "glTextureParameterIuiv");
1404    if (!texObj)
1405       return;
1406
1407    _mesa_texture_parameterIuiv(ctx, texObj, pname, params, true);
1408 }
1409
1410 GLboolean
1411 _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target,
1412                                            bool dsa)
1413 {
1414    /* Common targets for desktop GL and GLES 3.1. */
1415    switch (target) {
1416    case GL_TEXTURE_2D:
1417    case GL_TEXTURE_3D:
1418       return GL_TRUE;
1419    case GL_TEXTURE_2D_ARRAY_EXT:
1420       return ctx->Extensions.EXT_texture_array;
1421    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1422    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1423    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1424    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1425    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1426    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1427       return ctx->Extensions.ARB_texture_cube_map;
1428    case GL_TEXTURE_2D_MULTISAMPLE:
1429    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1430       return ctx->Extensions.ARB_texture_multisample;
1431    case GL_TEXTURE_BUFFER:
1432       /* GetTexLevelParameter accepts GL_TEXTURE_BUFFER in GL 3.1+ contexts,
1433        * but not in earlier versions that expose ARB_texture_buffer_object.
1434        *
1435        * From the ARB_texture_buffer_object spec:
1436        * "(7) Do buffer textures support texture parameters (TexParameter) or
1437        *      queries (GetTexParameter, GetTexLevelParameter, GetTexImage)?
1438        *
1439        *    RESOLVED:  No. [...] Note that the spec edits above don't add
1440        *    explicit error language for any of these cases.  That is because
1441        *    each of the functions enumerate the set of valid <target>
1442        *    parameters.  Not editing the spec to allow TEXTURE_BUFFER_ARB in
1443        *    these cases means that target is not legal, and an INVALID_ENUM
1444        *    error should be generated."
1445        *
1446        * From the OpenGL 3.1 spec:
1447        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
1448        */
1449       return (_mesa_is_desktop_gl(ctx) && ctx->Version >= 31) ||
1450              _mesa_has_OES_texture_buffer(ctx);
1451    case GL_TEXTURE_CUBE_MAP_ARRAY:
1452       return _mesa_has_texture_cube_map_array(ctx);
1453    }
1454
1455    if (!_mesa_is_desktop_gl(ctx))
1456       return GL_FALSE;
1457
1458    /* Rest of the desktop GL targets. */
1459    switch (target) {
1460    case GL_TEXTURE_1D:
1461    case GL_PROXY_TEXTURE_1D:
1462    case GL_PROXY_TEXTURE_2D:
1463    case GL_PROXY_TEXTURE_3D:
1464       return GL_TRUE;
1465    case GL_PROXY_TEXTURE_CUBE_MAP:
1466       return ctx->Extensions.ARB_texture_cube_map;
1467    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
1468       return ctx->Extensions.ARB_texture_cube_map_array;
1469    case GL_TEXTURE_RECTANGLE_NV:
1470    case GL_PROXY_TEXTURE_RECTANGLE_NV:
1471       return ctx->Extensions.NV_texture_rectangle;
1472    case GL_TEXTURE_1D_ARRAY_EXT:
1473    case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1474    case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1475       return ctx->Extensions.EXT_texture_array;
1476    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
1477    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
1478       return ctx->Extensions.ARB_texture_multisample;
1479
1480    /*  This is a valid target for dsa, but the OpenGL 4.5 core spec
1481     *  (30.10.2014) Section 8.11 Texture Queries says:
1482     *       "For GetTextureLevelParameter* only, texture may also be a cube
1483     *       map texture object.  In this case the query is always performed
1484     *       for face zero (the TEXTURE_CUBE_MAP_POSITIVE_X face), since there
1485     *       is no way to specify another face."
1486     */
1487    case GL_TEXTURE_CUBE_MAP:
1488       return dsa;
1489    default:
1490       return GL_FALSE;
1491    }
1492 }
1493
1494
1495 static void
1496 get_tex_level_parameter_image(struct gl_context *ctx,
1497                               const struct gl_texture_object *texObj,
1498                               GLenum target, GLint level,
1499                               GLenum pname, GLint *params,
1500                               bool dsa)
1501 {
1502    const struct gl_texture_image *img = NULL;
1503    struct gl_texture_image dummy_image;
1504    mesa_format texFormat;
1505    const char *suffix = dsa ? "ture" : "";
1506
1507    img = _mesa_select_tex_image(texObj, target, level);
1508    if (!img || img->TexFormat == MESA_FORMAT_NONE) {
1509       /* In case of undefined texture image return the default values.
1510        *
1511        * From OpenGL 4.0 spec, page 398:
1512        *    "The initial internal format of a texel array is RGBA
1513        *     instead of 1. TEXTURE_COMPONENTS is deprecated; always
1514        *     use TEXTURE_INTERNAL_FORMAT."
1515        */
1516       memset(&dummy_image, 0, sizeof(dummy_image));
1517       dummy_image.TexFormat = MESA_FORMAT_NONE;
1518       dummy_image.InternalFormat = GL_RGBA;
1519       dummy_image._BaseFormat = GL_NONE;
1520       dummy_image.FixedSampleLocations = GL_TRUE;
1521
1522       img = &dummy_image;
1523    }
1524
1525    texFormat = img->TexFormat;
1526
1527    switch (pname) {
1528       case GL_TEXTURE_WIDTH:
1529          *params = img->Width;
1530          break;
1531       case GL_TEXTURE_HEIGHT:
1532          *params = img->Height;
1533          break;
1534       case GL_TEXTURE_DEPTH:
1535          *params = img->Depth;
1536          break;
1537       case GL_TEXTURE_INTERNAL_FORMAT:
1538          if (_mesa_is_format_compressed(texFormat)) {
1539             /* need to return the actual compressed format */
1540             *params = _mesa_compressed_format_to_glenum(ctx, texFormat);
1541          }
1542          else {
1543             /* If the true internal format is not compressed but the user
1544              * requested a generic compressed format, we have to return the
1545              * generic base format that matches.
1546              *
1547              * From page 119 (page 129 of the PDF) of the OpenGL 1.3 spec:
1548              *
1549              *     "If no specific compressed format is available,
1550              *     internalformat is instead replaced by the corresponding base
1551              *     internal format."
1552              *
1553              * Otherwise just return the user's requested internal format
1554              */
1555             const GLenum f =
1556                _mesa_gl_compressed_format_base_format(img->InternalFormat);
1557
1558             *params = (f != 0) ? f : img->InternalFormat;
1559          }
1560          break;
1561       case GL_TEXTURE_BORDER:
1562          if (ctx->API != API_OPENGL_COMPAT)
1563             goto invalid_pname;
1564          *params = img->Border;
1565          break;
1566       case GL_TEXTURE_RED_SIZE:
1567       case GL_TEXTURE_GREEN_SIZE:
1568       case GL_TEXTURE_BLUE_SIZE:
1569       case GL_TEXTURE_ALPHA_SIZE:
1570          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1571             *params = _mesa_get_format_bits(texFormat, pname);
1572          else
1573             *params = 0;
1574          break;
1575       case GL_TEXTURE_INTENSITY_SIZE:
1576       case GL_TEXTURE_LUMINANCE_SIZE:
1577          if (ctx->API != API_OPENGL_COMPAT)
1578             goto invalid_pname;
1579          if (_mesa_base_format_has_channel(img->_BaseFormat, pname)) {
1580             *params = _mesa_get_format_bits(texFormat, pname);
1581             if (*params == 0) {
1582                /* intensity or luminance is probably stored as RGB[A] */
1583                *params = MIN2(_mesa_get_format_bits(texFormat,
1584                                                     GL_TEXTURE_RED_SIZE),
1585                               _mesa_get_format_bits(texFormat,
1586                                                     GL_TEXTURE_GREEN_SIZE));
1587             }
1588             if (*params == 0 && pname == GL_TEXTURE_INTENSITY_SIZE) {
1589                /* Gallium may store intensity as LA */
1590                *params = _mesa_get_format_bits(texFormat,
1591                                                GL_TEXTURE_ALPHA_SIZE);
1592             }
1593          }
1594          else {
1595             *params = 0;
1596          }
1597          break;
1598       case GL_TEXTURE_DEPTH_SIZE_ARB:
1599          if (!ctx->Extensions.ARB_depth_texture)
1600             goto invalid_pname;
1601          *params = _mesa_get_format_bits(texFormat, pname);
1602          break;
1603       case GL_TEXTURE_STENCIL_SIZE:
1604          *params = _mesa_get_format_bits(texFormat, pname);
1605          break;
1606       case GL_TEXTURE_SHARED_SIZE:
1607          if (ctx->Version < 30 &&
1608              !ctx->Extensions.EXT_texture_shared_exponent)
1609             goto invalid_pname;
1610          *params = texFormat == MESA_FORMAT_R9G9B9E5_FLOAT ? 5 : 0;
1611          break;
1612
1613       /* GL_ARB_texture_compression */
1614       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1615          if (_mesa_is_format_compressed(texFormat) &&
1616              !_mesa_is_proxy_texture(target)) {
1617             *params = _mesa_format_image_size(texFormat, img->Width,
1618                                               img->Height, img->Depth);
1619          } else {
1620             _mesa_error(ctx, GL_INVALID_OPERATION,
1621                         "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1622                         _mesa_enum_to_string(pname));
1623          }
1624          break;
1625       case GL_TEXTURE_COMPRESSED:
1626          *params = (GLint) _mesa_is_format_compressed(texFormat);
1627          break;
1628
1629       /* GL_ARB_texture_float */
1630       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1631       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1632          if (ctx->API != API_OPENGL_COMPAT)
1633             goto invalid_pname;
1634          /* FALLTHROUGH */
1635       case GL_TEXTURE_RED_TYPE_ARB:
1636       case GL_TEXTURE_GREEN_TYPE_ARB:
1637       case GL_TEXTURE_BLUE_TYPE_ARB:
1638       case GL_TEXTURE_ALPHA_TYPE_ARB:
1639       case GL_TEXTURE_DEPTH_TYPE_ARB:
1640          if (!ctx->Extensions.ARB_texture_float)
1641             goto invalid_pname;
1642          if (_mesa_base_format_has_channel(img->_BaseFormat, pname))
1643             *params = _mesa_get_format_datatype(texFormat);
1644          else
1645             *params = GL_NONE;
1646          break;
1647
1648       /* GL_ARB_texture_multisample */
1649       case GL_TEXTURE_SAMPLES:
1650          if (!ctx->Extensions.ARB_texture_multisample)
1651             goto invalid_pname;
1652          *params = img->NumSamples;
1653          break;
1654
1655       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1656          if (!ctx->Extensions.ARB_texture_multisample)
1657             goto invalid_pname;
1658          *params = img->FixedSampleLocations;
1659          break;
1660
1661       /* There is never a buffer data store here, but these pnames still have
1662        * to work.
1663        */
1664
1665       /* GL_ARB_texture_buffer_object */
1666       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1667          if (!ctx->Extensions.ARB_texture_buffer_object)
1668             goto invalid_pname;
1669          *params = 0;
1670          break;
1671
1672       /* GL_ARB_texture_buffer_range */
1673       case GL_TEXTURE_BUFFER_OFFSET:
1674          if (!ctx->Extensions.ARB_texture_buffer_range)
1675             goto invalid_pname;
1676          *params = 0;
1677          break;
1678       case GL_TEXTURE_BUFFER_SIZE:
1679          if (!ctx->Extensions.ARB_texture_buffer_range)
1680             goto invalid_pname;
1681          *params = 0;
1682          break;
1683
1684       default:
1685          goto invalid_pname;
1686    }
1687
1688    /* no error if we get here */
1689    return;
1690
1691 invalid_pname:
1692    _mesa_error(ctx, GL_INVALID_ENUM,
1693                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1694                _mesa_enum_to_string(pname));
1695 }
1696
1697
1698 /**
1699  * Handle a glGetTexLevelParamteriv() call for a texture buffer.
1700  */
1701 static void
1702 get_tex_level_parameter_buffer(struct gl_context *ctx,
1703                                const struct gl_texture_object *texObj,
1704                                GLenum pname, GLint *params, bool dsa)
1705 {
1706    const struct gl_buffer_object *bo = texObj->BufferObject;
1707    mesa_format texFormat = texObj->_BufferObjectFormat;
1708    int bytes = MAX2(1, _mesa_get_format_bytes(texFormat));
1709    GLenum internalFormat = texObj->BufferObjectFormat;
1710    GLenum baseFormat = _mesa_get_format_base_format(texFormat);
1711    const char *suffix = dsa ? "ture" : "";
1712
1713    assert(texObj->Target == GL_TEXTURE_BUFFER);
1714
1715    if (!bo) {
1716       /* undefined texture buffer object */
1717       switch (pname) {
1718       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1719          *params = GL_TRUE;
1720          break;
1721       case GL_TEXTURE_INTERNAL_FORMAT:
1722          *params = internalFormat;
1723          break;
1724       default:
1725          *params = 0;
1726          break;
1727       }
1728       return;
1729    }
1730
1731    switch (pname) {
1732       case GL_TEXTURE_BUFFER_DATA_STORE_BINDING:
1733          *params = bo->Name;
1734          break;
1735       case GL_TEXTURE_WIDTH:
1736          *params = ((texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize)
1737             / bytes;
1738          break;
1739       case GL_TEXTURE_HEIGHT:
1740       case GL_TEXTURE_DEPTH:
1741          *params = 1;
1742          break;
1743       case GL_TEXTURE_BORDER:
1744       case GL_TEXTURE_SHARED_SIZE:
1745       case GL_TEXTURE_COMPRESSED:
1746          *params = 0;
1747          break;
1748       case GL_TEXTURE_INTERNAL_FORMAT:
1749          *params = internalFormat;
1750          break;
1751       case GL_TEXTURE_RED_SIZE:
1752       case GL_TEXTURE_GREEN_SIZE:
1753       case GL_TEXTURE_BLUE_SIZE:
1754       case GL_TEXTURE_ALPHA_SIZE:
1755          if (_mesa_base_format_has_channel(baseFormat, pname))
1756             *params = _mesa_get_format_bits(texFormat, pname);
1757          else
1758             *params = 0;
1759          break;
1760       case GL_TEXTURE_INTENSITY_SIZE:
1761       case GL_TEXTURE_LUMINANCE_SIZE:
1762          if (_mesa_base_format_has_channel(baseFormat, pname)) {
1763             *params = _mesa_get_format_bits(texFormat, pname);
1764             if (*params == 0) {
1765                /* intensity or luminance is probably stored as RGB[A] */
1766                *params = MIN2(_mesa_get_format_bits(texFormat,
1767                                                     GL_TEXTURE_RED_SIZE),
1768                               _mesa_get_format_bits(texFormat,
1769                                                     GL_TEXTURE_GREEN_SIZE));
1770             }
1771          } else {
1772             *params = 0;
1773          }
1774          break;
1775       case GL_TEXTURE_DEPTH_SIZE_ARB:
1776       case GL_TEXTURE_STENCIL_SIZE_EXT:
1777          *params = _mesa_get_format_bits(texFormat, pname);
1778          break;
1779
1780       /* GL_ARB_texture_buffer_range */
1781       case GL_TEXTURE_BUFFER_OFFSET:
1782          if (!ctx->Extensions.ARB_texture_buffer_range)
1783             goto invalid_pname;
1784          *params = texObj->BufferOffset;
1785          break;
1786       case GL_TEXTURE_BUFFER_SIZE:
1787          if (!ctx->Extensions.ARB_texture_buffer_range)
1788             goto invalid_pname;
1789          *params = (texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize;
1790          break;
1791
1792       /* GL_ARB_texture_multisample */
1793       case GL_TEXTURE_SAMPLES:
1794          if (!ctx->Extensions.ARB_texture_multisample)
1795             goto invalid_pname;
1796          *params = 0;
1797          break;
1798
1799       case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
1800          if (!ctx->Extensions.ARB_texture_multisample)
1801             goto invalid_pname;
1802          *params = GL_TRUE;
1803          break;
1804
1805       /* GL_ARB_texture_compression */
1806       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
1807          /* Always illegal for GL_TEXTURE_BUFFER */
1808          _mesa_error(ctx, GL_INVALID_OPERATION,
1809                      "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1810                      _mesa_enum_to_string(pname));
1811          break;
1812
1813       /* GL_ARB_texture_float */
1814       case GL_TEXTURE_RED_TYPE_ARB:
1815       case GL_TEXTURE_GREEN_TYPE_ARB:
1816       case GL_TEXTURE_BLUE_TYPE_ARB:
1817       case GL_TEXTURE_ALPHA_TYPE_ARB:
1818       case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1819       case GL_TEXTURE_INTENSITY_TYPE_ARB:
1820       case GL_TEXTURE_DEPTH_TYPE_ARB:
1821          if (!ctx->Extensions.ARB_texture_float)
1822             goto invalid_pname;
1823          if (_mesa_base_format_has_channel(baseFormat, pname))
1824             *params = _mesa_get_format_datatype(texFormat);
1825          else
1826             *params = GL_NONE;
1827          break;
1828
1829       default:
1830          goto invalid_pname;
1831    }
1832
1833    /* no error if we get here */
1834    return;
1835
1836 invalid_pname:
1837    _mesa_error(ctx, GL_INVALID_ENUM,
1838                "glGetTex%sLevelParameter[if]v(pname=%s)", suffix,
1839                _mesa_enum_to_string(pname));
1840 }
1841
1842 static bool
1843 valid_tex_level_parameteriv_target(struct gl_context *ctx, GLenum target,
1844                                    bool dsa)
1845 {
1846    const char *suffix = dsa ? "ture" : "";
1847    if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, dsa)) {
1848       _mesa_error(ctx, GL_INVALID_ENUM,
1849                   "glGetTex%sLevelParameter[if]v(target=%s)", suffix,
1850                   _mesa_enum_to_string(target));
1851       return false;
1852    }
1853    return true;
1854 }
1855
1856 /**
1857  * This isn't exposed to the rest of the driver because it is a part of the
1858  * OpenGL API that is rarely used.
1859  */
1860 static void
1861 get_tex_level_parameteriv(struct gl_context *ctx,
1862                           struct gl_texture_object *texObj,
1863                           GLenum target, GLint level,
1864                           GLenum pname, GLint *params,
1865                           bool dsa)
1866 {
1867    GLint maxLevels;
1868    const char *suffix = dsa ? "ture" : "";
1869
1870    /* Check for errors */
1871    if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
1872       _mesa_error(ctx, GL_INVALID_OPERATION,
1873                   "glGetTex%sLevelParameter[if]v("
1874                   "current unit >= max combined texture units)", suffix);
1875       return;
1876    }
1877
1878    maxLevels = _mesa_max_texture_levels(ctx, target);
1879    assert(maxLevels != 0);
1880
1881    if (level < 0 || level >= maxLevels) {
1882       _mesa_error(ctx, GL_INVALID_VALUE,
1883                   "glGetTex%sLevelParameter[if]v(level out of range)", suffix);
1884       return;
1885    }
1886
1887    /* Get the level parameter */
1888    if (target == GL_TEXTURE_BUFFER) {
1889       get_tex_level_parameter_buffer(ctx, texObj, pname, params, dsa);
1890    }
1891    else {
1892       get_tex_level_parameter_image(ctx, texObj, target,
1893                                     level, pname, params, dsa);
1894    }
1895 }
1896
1897 void GLAPIENTRY
1898 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1899                               GLenum pname, GLfloat *params )
1900 {
1901    struct gl_texture_object *texObj;
1902    GLint iparam;
1903    GET_CURRENT_CONTEXT(ctx);
1904
1905    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1906       return;
1907
1908    texObj = _mesa_get_current_tex_object(ctx, target);
1909    if (!texObj)
1910       return;
1911
1912    get_tex_level_parameteriv(ctx, texObj, target, level,
1913                              pname, &iparam, false);
1914
1915    *params = (GLfloat) iparam;
1916 }
1917
1918 void GLAPIENTRY
1919 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1920                               GLenum pname, GLint *params )
1921 {
1922    struct gl_texture_object *texObj;
1923    GET_CURRENT_CONTEXT(ctx);
1924
1925    if (!valid_tex_level_parameteriv_target(ctx, target, false))
1926       return;
1927
1928    texObj = _mesa_get_current_tex_object(ctx, target);
1929    if (!texObj)
1930       return;
1931
1932    get_tex_level_parameteriv(ctx, texObj, target, level,
1933                              pname, params, false);
1934 }
1935
1936 void GLAPIENTRY
1937 _mesa_GetTextureLevelParameterfv(GLuint texture, GLint level,
1938                                  GLenum pname, GLfloat *params)
1939 {
1940    struct gl_texture_object *texObj;
1941    GLint iparam;
1942    GET_CURRENT_CONTEXT(ctx);
1943
1944    texObj = _mesa_lookup_texture_err(ctx, texture,
1945                                      "glGetTextureLevelParameterfv");
1946    if (!texObj)
1947       return;
1948
1949    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1950       return;
1951
1952    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1953                              pname, &iparam, true);
1954
1955    *params = (GLfloat) iparam;
1956 }
1957
1958 void GLAPIENTRY
1959 _mesa_GetTextureLevelParameterfvEXT(GLuint texture, GLenum target, GLint level,
1960                                     GLenum pname, GLfloat *params)
1961 {
1962    struct gl_texture_object *texObj;
1963    GLint iparam;
1964    GET_CURRENT_CONTEXT(ctx);
1965
1966    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
1967                                            "glGetTextureLevelParameterfvEXT");
1968    if (!texObj)
1969       return;
1970
1971    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1972       return;
1973
1974    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1975                              pname, &iparam, true);
1976
1977    *params = (GLfloat) iparam;
1978 }
1979
1980 void GLAPIENTRY
1981 _mesa_GetMultiTexLevelParameterfvEXT(GLenum texunit, GLenum target, GLint level,
1982                                      GLenum pname, GLfloat *params)
1983 {
1984    struct gl_texture_object *texObj;
1985    GLint iparam;
1986    GET_CURRENT_CONTEXT(ctx);
1987
1988    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
1989                                                    texunit - GL_TEXTURE0,
1990                                                    true,
1991                                                    "glGetMultiTexLevelParameterfvEXT");
1992    if (!texObj)
1993       return;
1994
1995    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
1996       return;
1997
1998    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
1999                              pname, &iparam, true);
2000
2001    *params = (GLfloat) iparam;
2002 }
2003
2004 void GLAPIENTRY
2005 _mesa_GetTextureLevelParameteriv(GLuint texture, GLint level,
2006                                  GLenum pname, GLint *params)
2007 {
2008    struct gl_texture_object *texObj;
2009    GET_CURRENT_CONTEXT(ctx);
2010
2011    texObj = _mesa_lookup_texture_err(ctx, texture,
2012                                      "glGetTextureLevelParameteriv");
2013    if (!texObj)
2014       return;
2015
2016    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
2017       return;
2018
2019    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
2020                              pname, params, true);
2021 }
2022
2023 void GLAPIENTRY
2024 _mesa_GetTextureLevelParameterivEXT(GLuint texture, GLenum target, GLint level,
2025                                     GLenum pname, GLint *params)
2026 {
2027    struct gl_texture_object *texObj;
2028    GET_CURRENT_CONTEXT(ctx);
2029
2030    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
2031                                            "glGetTextureLevelParameterivEXT");
2032    if (!texObj)
2033       return;
2034
2035    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
2036       return;
2037
2038    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
2039                              pname, params, true);
2040 }
2041
2042 void GLAPIENTRY
2043 _mesa_GetMultiTexLevelParameterivEXT(GLenum texunit, GLenum target, GLint level,
2044                                      GLenum pname, GLint *params)
2045 {
2046    struct gl_texture_object *texObj;
2047    GET_CURRENT_CONTEXT(ctx);
2048
2049    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2050                                                    texunit - GL_TEXTURE0,
2051                                                    true,
2052                                                    "glGetMultiTexLevelParameterivEXT");
2053    if (!texObj)
2054       return;
2055
2056    if (!valid_tex_level_parameteriv_target(ctx, texObj->Target, true))
2057       return;
2058
2059    get_tex_level_parameteriv(ctx, texObj, texObj->Target, level,
2060                              pname, params, true);
2061 }
2062
2063
2064 /**
2065  * This isn't exposed to the rest of the driver because it is a part of the
2066  * OpenGL API that is rarely used.
2067  */
2068 static void
2069 get_tex_parameterfv(struct gl_context *ctx,
2070                     struct gl_texture_object *obj,
2071                     GLenum pname, GLfloat *params, bool dsa)
2072 {
2073    _mesa_lock_context_textures(ctx);
2074    switch (pname) {
2075       case GL_TEXTURE_MAG_FILTER:
2076          *params = ENUM_TO_FLOAT(obj->Sampler.MagFilter);
2077          break;
2078       case GL_TEXTURE_MIN_FILTER:
2079          *params = ENUM_TO_FLOAT(obj->Sampler.MinFilter);
2080          break;
2081       case GL_TEXTURE_WRAP_S:
2082          *params = ENUM_TO_FLOAT(obj->Sampler.WrapS);
2083          break;
2084       case GL_TEXTURE_WRAP_T:
2085          *params = ENUM_TO_FLOAT(obj->Sampler.WrapT);
2086          break;
2087       case GL_TEXTURE_WRAP_R:
2088          *params = ENUM_TO_FLOAT(obj->Sampler.WrapR);
2089          break;
2090       case GL_TEXTURE_BORDER_COLOR:
2091          if (ctx->API == API_OPENGLES ||
2092              !ctx->Extensions.ARB_texture_border_clamp)
2093             goto invalid_pname;
2094
2095          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
2096             _mesa_update_state_locked(ctx);
2097          if (_mesa_get_clamp_fragment_color(ctx, ctx->DrawBuffer)) {
2098             params[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
2099             params[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
2100             params[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
2101             params[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
2102          }
2103          else {
2104             params[0] = obj->Sampler.BorderColor.f[0];
2105             params[1] = obj->Sampler.BorderColor.f[1];
2106             params[2] = obj->Sampler.BorderColor.f[2];
2107             params[3] = obj->Sampler.BorderColor.f[3];
2108          }
2109          break;
2110       case GL_TEXTURE_RESIDENT:
2111          if (ctx->API != API_OPENGL_COMPAT)
2112             goto invalid_pname;
2113
2114          *params = 1.0F;
2115          break;
2116       case GL_TEXTURE_PRIORITY:
2117          if (ctx->API != API_OPENGL_COMPAT)
2118             goto invalid_pname;
2119
2120          *params = obj->Priority;
2121          break;
2122       case GL_TEXTURE_MIN_LOD:
2123          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2124             goto invalid_pname;
2125
2126          *params = obj->Sampler.MinLod;
2127          break;
2128       case GL_TEXTURE_MAX_LOD:
2129          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2130             goto invalid_pname;
2131
2132          *params = obj->Sampler.MaxLod;
2133          break;
2134       case GL_TEXTURE_BASE_LEVEL:
2135          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2136             goto invalid_pname;
2137
2138          *params = (GLfloat) obj->BaseLevel;
2139          break;
2140       case GL_TEXTURE_MAX_LEVEL:
2141          *params = (GLfloat) obj->MaxLevel;
2142          break;
2143       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
2144          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
2145             goto invalid_pname;
2146          *params = obj->Sampler.MaxAnisotropy;
2147          break;
2148       case GL_GENERATE_MIPMAP_SGIS:
2149          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
2150             goto invalid_pname;
2151
2152          *params = (GLfloat) obj->GenerateMipmap;
2153          break;
2154       case GL_TEXTURE_COMPARE_MODE_ARB:
2155          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2156              && !_mesa_is_gles3(ctx))
2157             goto invalid_pname;
2158          *params = (GLfloat) obj->Sampler.CompareMode;
2159          break;
2160       case GL_TEXTURE_COMPARE_FUNC_ARB:
2161          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2162              && !_mesa_is_gles3(ctx))
2163             goto invalid_pname;
2164          *params = (GLfloat) obj->Sampler.CompareFunc;
2165          break;
2166       case GL_DEPTH_TEXTURE_MODE_ARB:
2167          /* GL_DEPTH_TEXTURE_MODE_ARB is removed in core-profile and it has
2168           * never existed in OpenGL ES.
2169           */
2170          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2171             goto invalid_pname;
2172          *params = (GLfloat) obj->DepthMode;
2173          break;
2174       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2175          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
2176             goto invalid_pname;
2177          *params = (GLfloat)
2178             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2179          break;
2180       case GL_TEXTURE_LOD_BIAS:
2181          if (_mesa_is_gles(ctx))
2182             goto invalid_pname;
2183
2184          *params = obj->Sampler.LodBias;
2185          break;
2186       case GL_TEXTURE_CROP_RECT_OES:
2187          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2188             goto invalid_pname;
2189
2190          params[0] = (GLfloat) obj->CropRect[0];
2191          params[1] = (GLfloat) obj->CropRect[1];
2192          params[2] = (GLfloat) obj->CropRect[2];
2193          params[3] = (GLfloat) obj->CropRect[3];
2194          break;
2195
2196       case GL_TEXTURE_SWIZZLE_R_EXT:
2197       case GL_TEXTURE_SWIZZLE_G_EXT:
2198       case GL_TEXTURE_SWIZZLE_B_EXT:
2199       case GL_TEXTURE_SWIZZLE_A_EXT:
2200          if ((!_mesa_is_desktop_gl(ctx)
2201               || !ctx->Extensions.EXT_texture_swizzle)
2202              && !_mesa_is_gles3(ctx))
2203             goto invalid_pname;
2204          *params = (GLfloat) obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2205          break;
2206
2207       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2208          if ((!_mesa_is_desktop_gl(ctx)
2209               || !ctx->Extensions.EXT_texture_swizzle)
2210              && !_mesa_is_gles3(ctx)) {
2211             goto invalid_pname;
2212          }
2213          else {
2214             GLuint comp;
2215             for (comp = 0; comp < 4; comp++) {
2216                params[comp] = (GLfloat) obj->Swizzle[comp];
2217             }
2218          }
2219          break;
2220
2221       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2222          if (!_mesa_is_desktop_gl(ctx)
2223              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2224             goto invalid_pname;
2225          *params = (GLfloat) obj->Sampler.CubeMapSeamless;
2226          break;
2227
2228       case GL_TEXTURE_IMMUTABLE_FORMAT:
2229          *params = (GLfloat) obj->Immutable;
2230          break;
2231
2232       case GL_TEXTURE_IMMUTABLE_LEVELS:
2233          if (_mesa_is_gles3(ctx) || _mesa_has_texture_view(ctx))
2234             *params = (GLfloat) obj->ImmutableLevels;
2235          else
2236             goto invalid_pname;
2237          break;
2238
2239       case GL_TEXTURE_VIEW_MIN_LEVEL:
2240          if (!_mesa_has_texture_view(ctx))
2241             goto invalid_pname;
2242          *params = (GLfloat) obj->MinLevel;
2243          break;
2244
2245       case GL_TEXTURE_VIEW_NUM_LEVELS:
2246          if (!_mesa_has_texture_view(ctx))
2247             goto invalid_pname;
2248          *params = (GLfloat) obj->NumLevels;
2249          break;
2250
2251       case GL_TEXTURE_VIEW_MIN_LAYER:
2252          if (!_mesa_has_texture_view(ctx))
2253             goto invalid_pname;
2254          *params = (GLfloat) obj->MinLayer;
2255          break;
2256
2257       case GL_TEXTURE_VIEW_NUM_LAYERS:
2258          if (!_mesa_has_texture_view(ctx))
2259             goto invalid_pname;
2260          *params = (GLfloat) obj->NumLayers;
2261          break;
2262
2263       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2264          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2265             goto invalid_pname;
2266          *params = (GLfloat) obj->RequiredTextureImageUnits;
2267          break;
2268
2269       case GL_TEXTURE_SRGB_DECODE_EXT:
2270          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2271             goto invalid_pname;
2272          *params = (GLfloat) obj->Sampler.sRGBDecode;
2273          break;
2274
2275       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2276          if (!ctx->Extensions.ARB_shader_image_load_store)
2277             goto invalid_pname;
2278          *params = (GLfloat) obj->ImageFormatCompatibilityType;
2279          break;
2280
2281       case GL_TEXTURE_TARGET:
2282          if (ctx->API != API_OPENGL_CORE)
2283             goto invalid_pname;
2284          *params = ENUM_TO_FLOAT(obj->Target);
2285          break;
2286
2287       case GL_TEXTURE_TILING_EXT:
2288          if (!ctx->Extensions.EXT_memory_object)
2289             goto invalid_pname;
2290          *params = ENUM_TO_FLOAT(obj->TextureTiling);
2291          break;
2292
2293       default:
2294          goto invalid_pname;
2295    }
2296
2297    /* no error if we get here */
2298    _mesa_unlock_context_textures(ctx);
2299    return;
2300
2301 invalid_pname:
2302    _mesa_unlock_context_textures(ctx);
2303    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameterfv(pname=0x%x)",
2304                dsa ? "ture" : "", pname);
2305 }
2306
2307
2308 static void
2309 get_tex_parameteriv(struct gl_context *ctx,
2310                     struct gl_texture_object *obj,
2311                     GLenum pname, GLint *params, bool dsa)
2312 {
2313    _mesa_lock_texture(ctx, obj);
2314    switch (pname) {
2315       case GL_TEXTURE_MAG_FILTER:
2316          *params = (GLint) obj->Sampler.MagFilter;
2317          break;
2318       case GL_TEXTURE_MIN_FILTER:
2319          *params = (GLint) obj->Sampler.MinFilter;
2320          break;
2321       case GL_TEXTURE_WRAP_S:
2322          *params = (GLint) obj->Sampler.WrapS;
2323          break;
2324       case GL_TEXTURE_WRAP_T:
2325          *params = (GLint) obj->Sampler.WrapT;
2326          break;
2327       case GL_TEXTURE_WRAP_R:
2328          *params = (GLint) obj->Sampler.WrapR;
2329          break;
2330       case GL_TEXTURE_BORDER_COLOR:
2331          if (ctx->API == API_OPENGLES ||
2332              !ctx->Extensions.ARB_texture_border_clamp)
2333             goto invalid_pname;
2334
2335          {
2336             GLfloat b[4];
2337             b[0] = CLAMP(obj->Sampler.BorderColor.f[0], 0.0F, 1.0F);
2338             b[1] = CLAMP(obj->Sampler.BorderColor.f[1], 0.0F, 1.0F);
2339             b[2] = CLAMP(obj->Sampler.BorderColor.f[2], 0.0F, 1.0F);
2340             b[3] = CLAMP(obj->Sampler.BorderColor.f[3], 0.0F, 1.0F);
2341             params[0] = FLOAT_TO_INT(b[0]);
2342             params[1] = FLOAT_TO_INT(b[1]);
2343             params[2] = FLOAT_TO_INT(b[2]);
2344             params[3] = FLOAT_TO_INT(b[3]);
2345          }
2346          break;
2347       case GL_TEXTURE_RESIDENT:
2348          if (ctx->API != API_OPENGL_COMPAT)
2349             goto invalid_pname;
2350
2351          *params = 1;
2352          break;
2353       case GL_TEXTURE_PRIORITY:
2354          if (ctx->API != API_OPENGL_COMPAT)
2355             goto invalid_pname;
2356
2357          *params = FLOAT_TO_INT(obj->Priority);
2358          break;
2359       case GL_TEXTURE_MIN_LOD:
2360          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2361             goto invalid_pname;
2362          /* GL spec 'Data Conversions' section specifies that floating-point
2363           * value in integer Get function is rounded to nearest integer
2364           */
2365          *params = IROUND(obj->Sampler.MinLod);
2366          break;
2367       case GL_TEXTURE_MAX_LOD:
2368          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2369             goto invalid_pname;
2370          /* GL spec 'Data Conversions' section specifies that floating-point
2371           * value in integer Get function is rounded to nearest integer
2372           */
2373          *params = IROUND(obj->Sampler.MaxLod);
2374          break;
2375       case GL_TEXTURE_BASE_LEVEL:
2376          if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
2377             goto invalid_pname;
2378
2379          *params = obj->BaseLevel;
2380          break;
2381       case GL_TEXTURE_MAX_LEVEL:
2382          *params = obj->MaxLevel;
2383          break;
2384       case GL_TEXTURE_MAX_ANISOTROPY_EXT:
2385          if (!ctx->Extensions.EXT_texture_filter_anisotropic)
2386             goto invalid_pname;
2387          /* GL spec 'Data Conversions' section specifies that floating-point
2388           * value in integer Get function is rounded to nearest integer
2389           */
2390          *params = IROUND(obj->Sampler.MaxAnisotropy);
2391          break;
2392       case GL_GENERATE_MIPMAP_SGIS:
2393          if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
2394             goto invalid_pname;
2395
2396          *params = (GLint) obj->GenerateMipmap;
2397          break;
2398       case GL_TEXTURE_COMPARE_MODE_ARB:
2399          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2400              && !_mesa_is_gles3(ctx))
2401             goto invalid_pname;
2402          *params = (GLint) obj->Sampler.CompareMode;
2403          break;
2404       case GL_TEXTURE_COMPARE_FUNC_ARB:
2405          if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_shadow)
2406              && !_mesa_is_gles3(ctx))
2407             goto invalid_pname;
2408          *params = (GLint) obj->Sampler.CompareFunc;
2409          break;
2410       case GL_DEPTH_TEXTURE_MODE_ARB:
2411          if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_depth_texture)
2412             goto invalid_pname;
2413          *params = (GLint) obj->DepthMode;
2414          break;
2415       case GL_DEPTH_STENCIL_TEXTURE_MODE:
2416          if (!_mesa_has_ARB_stencil_texturing(ctx) && !_mesa_is_gles31(ctx))
2417             goto invalid_pname;
2418          *params = (GLint)
2419             (obj->StencilSampling ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT);
2420          break;
2421       case GL_TEXTURE_LOD_BIAS:
2422          if (_mesa_is_gles(ctx))
2423             goto invalid_pname;
2424
2425          /* GL spec 'Data Conversions' section specifies that floating-point
2426           * value in integer Get function is rounded to nearest integer
2427           */
2428          *params = IROUND(obj->Sampler.LodBias);
2429          break;
2430       case GL_TEXTURE_CROP_RECT_OES:
2431          if (ctx->API != API_OPENGLES || !ctx->Extensions.OES_draw_texture)
2432             goto invalid_pname;
2433
2434          params[0] = obj->CropRect[0];
2435          params[1] = obj->CropRect[1];
2436          params[2] = obj->CropRect[2];
2437          params[3] = obj->CropRect[3];
2438          break;
2439       case GL_TEXTURE_SWIZZLE_R_EXT:
2440       case GL_TEXTURE_SWIZZLE_G_EXT:
2441       case GL_TEXTURE_SWIZZLE_B_EXT:
2442       case GL_TEXTURE_SWIZZLE_A_EXT:
2443          if ((!_mesa_is_desktop_gl(ctx)
2444               || !ctx->Extensions.EXT_texture_swizzle)
2445              && !_mesa_is_gles3(ctx))
2446             goto invalid_pname;
2447          *params = obj->Swizzle[pname - GL_TEXTURE_SWIZZLE_R_EXT];
2448          break;
2449
2450       case GL_TEXTURE_SWIZZLE_RGBA_EXT:
2451          if ((!_mesa_is_desktop_gl(ctx)
2452               || !ctx->Extensions.EXT_texture_swizzle)
2453              && !_mesa_is_gles3(ctx))
2454             goto invalid_pname;
2455          COPY_4V(params, obj->Swizzle);
2456          break;
2457
2458       case GL_TEXTURE_CUBE_MAP_SEAMLESS:
2459          if (!_mesa_is_desktop_gl(ctx)
2460              || !ctx->Extensions.AMD_seamless_cubemap_per_texture)
2461             goto invalid_pname;
2462          *params = (GLint) obj->Sampler.CubeMapSeamless;
2463          break;
2464
2465       case GL_TEXTURE_IMMUTABLE_FORMAT:
2466          *params = (GLint) obj->Immutable;
2467          break;
2468
2469       case GL_TEXTURE_IMMUTABLE_LEVELS:
2470          if (_mesa_is_gles3(ctx) ||
2471              (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_view))
2472             *params = obj->ImmutableLevels;
2473          else
2474             goto invalid_pname;
2475          break;
2476
2477       case GL_TEXTURE_VIEW_MIN_LEVEL:
2478          if (!ctx->Extensions.ARB_texture_view)
2479             goto invalid_pname;
2480          *params = (GLint) obj->MinLevel;
2481          break;
2482
2483       case GL_TEXTURE_VIEW_NUM_LEVELS:
2484          if (!ctx->Extensions.ARB_texture_view)
2485             goto invalid_pname;
2486          *params = (GLint) obj->NumLevels;
2487          break;
2488
2489       case GL_TEXTURE_VIEW_MIN_LAYER:
2490          if (!ctx->Extensions.ARB_texture_view)
2491             goto invalid_pname;
2492          *params = (GLint) obj->MinLayer;
2493          break;
2494
2495       case GL_TEXTURE_VIEW_NUM_LAYERS:
2496          if (!ctx->Extensions.ARB_texture_view)
2497             goto invalid_pname;
2498          *params = (GLint) obj->NumLayers;
2499          break;
2500
2501       case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
2502          if (!_mesa_is_gles(ctx) || !ctx->Extensions.OES_EGL_image_external)
2503             goto invalid_pname;
2504          *params = obj->RequiredTextureImageUnits;
2505          break;
2506
2507       case GL_TEXTURE_SRGB_DECODE_EXT:
2508          if (!ctx->Extensions.EXT_texture_sRGB_decode)
2509             goto invalid_pname;
2510          *params = obj->Sampler.sRGBDecode;
2511          break;
2512
2513       case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
2514          if (!ctx->Extensions.ARB_shader_image_load_store)
2515             goto invalid_pname;
2516          *params = obj->ImageFormatCompatibilityType;
2517          break;
2518
2519       case GL_TEXTURE_TARGET:
2520          if (ctx->API != API_OPENGL_CORE)
2521             goto invalid_pname;
2522          *params = (GLint) obj->Target;
2523          break;
2524
2525       case GL_TEXTURE_TILING_EXT:
2526          if (!ctx->Extensions.EXT_memory_object)
2527             goto invalid_pname;
2528          *params = (GLint) obj->TextureTiling;
2529          break;
2530
2531       default:
2532          goto invalid_pname;
2533    }
2534
2535    /* no error if we get here */
2536    _mesa_unlock_texture(ctx, obj);
2537    return;
2538
2539 invalid_pname:
2540    _mesa_unlock_texture(ctx, obj);
2541    _mesa_error(ctx, GL_INVALID_ENUM, "glGetTex%sParameteriv(pname=0x%x)",
2542                dsa ? "ture" : "", pname);
2543 }
2544
2545 static void
2546 get_tex_parameterIiv(struct gl_context *ctx,
2547                      struct gl_texture_object *obj,
2548                      GLenum pname, GLint *params, bool dsa)
2549 {
2550    switch (pname) {
2551    case GL_TEXTURE_BORDER_COLOR:
2552       COPY_4V(params, obj->Sampler.BorderColor.i);
2553       break;
2554    default:
2555       get_tex_parameteriv(ctx, obj, pname, params, dsa);
2556    }
2557 }
2558
2559 void GLAPIENTRY
2560 _mesa_GetTexParameterfv(GLenum target, GLenum pname, GLfloat *params)
2561 {
2562    struct gl_texture_object *obj;
2563    GET_CURRENT_CONTEXT(ctx);
2564
2565    obj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2566                                                 ctx->Texture.CurrentUnit,
2567                                                 false,
2568                                                 "glGetTexParameterfv");
2569    if (!obj)
2570       return;
2571
2572    get_tex_parameterfv(ctx, obj, pname, params, false);
2573 }
2574
2575 void GLAPIENTRY
2576 _mesa_GetTexParameteriv(GLenum target, GLenum pname, GLint *params)
2577 {
2578    struct gl_texture_object *obj;
2579    GET_CURRENT_CONTEXT(ctx);
2580
2581    obj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2582                                                 ctx->Texture.CurrentUnit,
2583                                                 false,
2584                                                 "glGetTexParameteriv");
2585    if (!obj)
2586       return;
2587
2588    get_tex_parameteriv(ctx, obj, pname, params, false);
2589 }
2590
2591 /** New in GL 3.0 */
2592 void GLAPIENTRY
2593 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
2594 {
2595    struct gl_texture_object *texObj;
2596    GET_CURRENT_CONTEXT(ctx);
2597
2598    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2599                                                 ctx->Texture.CurrentUnit,
2600                                                 false,
2601                                                 "glGetTexParameterIiv");
2602    if (!texObj)
2603       return;
2604
2605    get_tex_parameterIiv(ctx, texObj, pname, params, false);
2606 }
2607
2608
2609 /** New in GL 3.0 */
2610 void GLAPIENTRY
2611 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
2612 {
2613    struct gl_texture_object *texObj;
2614    GET_CURRENT_CONTEXT(ctx);
2615
2616    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2617                                                 ctx->Texture.CurrentUnit,
2618                                                 false,
2619                                                 "glGetTexParameterIuiv");
2620    if (!texObj)
2621       return;
2622
2623    get_tex_parameterIiv(ctx, texObj, pname, (GLint *) params, false);
2624 }
2625
2626 void GLAPIENTRY
2627 _mesa_GetTextureParameterfvEXT(GLuint texture, GLenum target, GLenum pname, GLfloat *params)
2628 {
2629    struct gl_texture_object *texObj;
2630    GET_CURRENT_CONTEXT(ctx);
2631
2632    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
2633                                            "glGetTextureParameterfvEXT");
2634    if (!texObj)
2635       return;
2636
2637    if (!is_texparameteri_target_valid(texObj->Target)) {
2638       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTextureParameterfvEXT");
2639       return;
2640    }
2641
2642    get_tex_parameterfv(ctx, texObj, pname, params, true);
2643 }
2644
2645 void GLAPIENTRY
2646 _mesa_GetMultiTexParameterfvEXT(GLenum texunit, GLenum target, GLenum pname, GLfloat *params)
2647 {
2648    struct gl_texture_object *texObj;
2649    GET_CURRENT_CONTEXT(ctx);
2650
2651    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2652                                                    texunit - GL_TEXTURE0,
2653                                                    false,
2654                                                    "glGetMultiTexParameterfvEXT");
2655    if (!texObj)
2656       return;
2657
2658    if (!is_texparameteri_target_valid(texObj->Target)) {
2659       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMultiTexParameterfvEXT");
2660       return;
2661    }
2662    get_tex_parameterfv(ctx, texObj, pname, params, true);
2663 }
2664
2665 void GLAPIENTRY
2666 _mesa_GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat *params)
2667 {
2668    struct gl_texture_object *obj;
2669    GET_CURRENT_CONTEXT(ctx);
2670
2671    obj = get_texobj_by_name(ctx, texture, "glGetTextureParameterfv");
2672    if (!obj)
2673       return;
2674
2675    get_tex_parameterfv(ctx, obj, pname, params, true);
2676 }
2677
2678 void GLAPIENTRY
2679 _mesa_GetTextureParameterivEXT(GLuint texture, GLenum target, GLenum pname, GLint *params)
2680 {
2681    struct gl_texture_object *texObj;
2682    GET_CURRENT_CONTEXT(ctx);
2683
2684    texObj = _mesa_lookup_or_create_texture(ctx, target, texture, false, true,
2685                                            "glGetTextureParameterivEXT");
2686    if (!texObj)
2687       return;
2688
2689    if (!is_texparameteri_target_valid(texObj->Target)) {
2690       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTextureParameterivEXT");
2691       return;
2692    }
2693    get_tex_parameteriv(ctx, texObj, pname, params, true);
2694 }
2695
2696 void GLAPIENTRY
2697 _mesa_GetMultiTexParameterivEXT(GLenum texunit, GLenum target, GLenum pname, GLint *params)
2698 {
2699    struct gl_texture_object *texObj;
2700    GET_CURRENT_CONTEXT(ctx);
2701
2702    texObj = _mesa_get_texobj_by_target_and_texunit(ctx, target,
2703                                                    texunit - GL_TEXTURE0,
2704                                                    false,
2705                                                    "glGetMultiTexParameterivEXT");
2706    if (!texObj)
2707       return;
2708
2709    if (!is_texparameteri_target_valid(texObj->Target)) {
2710       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMultiTexParameterivEXT");
2711       return;
2712    }
2713    get_tex_parameteriv(ctx, texObj, pname, params, true);
2714 }
2715
2716 void GLAPIENTRY
2717 _mesa_GetTextureParameteriv(GLuint texture, GLenum pname, GLint *params)
2718 {
2719    struct gl_texture_object *obj;
2720    GET_CURRENT_CONTEXT(ctx);
2721
2722    obj = get_texobj_by_name(ctx, texture, "glGetTextureParameteriv");
2723    if (!obj)
2724       return;
2725
2726    get_tex_parameteriv(ctx, obj, pname, params, true);
2727 }
2728
2729 void GLAPIENTRY
2730 _mesa_GetTextureParameterIiv(GLuint texture, GLenum pname, GLint *params)
2731 {
2732    struct gl_texture_object *texObj;
2733    GET_CURRENT_CONTEXT(ctx);
2734
2735    texObj = get_texobj_by_name(ctx, texture, "glGetTextureParameterIiv");
2736    if (!texObj)
2737       return;
2738
2739    get_tex_parameterIiv(ctx, texObj, pname, params, true);
2740 }
2741
2742
2743 void GLAPIENTRY
2744 _mesa_GetTextureParameterIuiv(GLuint texture, GLenum pname, GLuint *params)
2745 {
2746    struct gl_texture_object *texObj;
2747    GET_CURRENT_CONTEXT(ctx);
2748
2749    texObj = get_texobj_by_name(ctx, texture, "glGetTextureParameterIuiv");
2750    if (!texObj)
2751       return;
2752
2753    get_tex_parameterIiv(ctx, texObj, pname, (GLint *) params, true);
2754 }