src/mesa/main/varray.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.6
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #include "glheader.h"
  28 #include "imports.h"
  29 #include "bufferobj.h"
  30 #include "context.h"
  31 #include "enable.h"
  32 #include "enums.h"
  33 #include "hash.h"
  34 #include "image.h"
  35 #include "macros.h"
  36 #include "mtypes.h"
  37 #include "varray.h"
  38 #include "arrayobj.h"
  39 #include "main/dispatch.h"
  40
  41
  42 /** Used to do error checking for GL_EXT_vertex_array_bgra */
  43 #define BGRA_OR_4  5
  44
  45
  46 /** Used to indicate which GL datatypes are accepted by each of the
  47  * glVertex/Color/Attrib/EtcPointer() functions.
  48  */
  49 #define BOOL_BIT             0x1
  50 #define BYTE_BIT             0x2
  51 #define UNSIGNED_BYTE_BIT    0x4
  52 #define SHORT_BIT            0x8
  53 #define UNSIGNED_SHORT_BIT   0x10
  54 #define INT_BIT              0x20
  55 #define UNSIGNED_INT_BIT     0x40
  56 #define HALF_BIT             0x80
  57 #define FLOAT_BIT            0x100
  58 #define DOUBLE_BIT           0x200
  59 #define FIXED_BIT            0x400
  60
  61
  62
  63 /** Convert GL datatype enum into a <type>_BIT value seen above */
  64 static GLbitfield
  65 type_to_bit(const struct gl_context *ctx, GLenum type)
  66 {
  67    switch (type) {
  68    case GL_BOOL:
  69       return BOOL_BIT;
  70    case GL_BYTE:
  71       return BYTE_BIT;
  72    case GL_UNSIGNED_BYTE:
  73       return UNSIGNED_BYTE_BIT;
  74    case GL_SHORT:
  75       return SHORT_BIT;
  76    case GL_UNSIGNED_SHORT:
  77       return UNSIGNED_SHORT_BIT;
  78    case GL_INT:
  79       return INT_BIT;
  80    case GL_UNSIGNED_INT:
  81       return UNSIGNED_INT_BIT;
  82    case GL_HALF_FLOAT:
  83       if (ctx->Extensions.ARB_half_float_vertex)
  84          return HALF_BIT;
  85       else
  86          return 0x0;
  87    case GL_FLOAT:
  88       return FLOAT_BIT;
  89    case GL_DOUBLE:
  90       return DOUBLE_BIT;
  91    case GL_FIXED:
  92       return FIXED_BIT;
  93    default:
  94       return 0;
  95    }
  96 }
  97
  98
  99 /**
 100  * Do error checking and update state for glVertex/Color/TexCoord/...Pointer
 101  * functions.
 102  *
 103  * \param func  name of calling function used for error reporting
 104  * \param array  the array to update
 105  * \param dirtyBit  which bit to set in ctx->Array.NewState for this array
 106  * \param legalTypes  bitmask of *_BIT above indicating legal datatypes
 107  * \param sizeMin  min allowable size value
 108  * \param sizeMax  max allowable size value (may also be BGRA_OR_4)
 109  * \param size  components per element (1, 2, 3 or 4)
 110  * \param type  datatype of each component (GL_FLOAT, GL_INT, etc)
 111  * \param stride  stride between elements, in elements
 112  * \param normalized  are integer types converted to floats in [-1, 1]?
 113  * \param integer  integer-valued values (will not be normalized to [-1,1])
 114  * \param ptr  the address (or offset inside VBO) of the array data
 115  */
 116 static void
 117 update_array(struct gl_context *ctx,
 118              const char *func,
 119              struct gl_client_array *array,
 120              GLbitfield dirtyBit, GLbitfield legalTypesMask,
 121              GLint sizeMin, GLint sizeMax,
 122              GLint size, GLenum type, GLsizei stride,
 123              GLboolean normalized, GLboolean integer,
 124              const GLvoid *ptr)
 125 {
 126    GLbitfield typeBit;
 127    GLsizei elementSize;
 128    GLenum format = GL_RGBA;
 129
 130    if (ctx->API != API_OPENGLES) {
 131       /* fixed point arrays / data is only allowed with OpenGL ES 1.x */
 132       legalTypesMask &= ~FIXED_BIT;
 133    }
 134
 135    typeBit = type_to_bit(ctx, type);
 136    if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
 137       _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
 138                   func, _mesa_lookup_enum_by_nr(type));
 139       return;
 140    }
 141
 142    /* Do size parameter checking.
 143     * If sizeMax = BGRA_OR_4 it means that size = GL_BGRA is legal and
 144     * must be handled specially.
 145     */
 146    if (ctx->Extensions.EXT_vertex_array_bgra &&
 147        sizeMax == BGRA_OR_4 &&
 148        size == GL_BGRA) {
 149       if (type != GL_UNSIGNED_BYTE) {
 150          _mesa_error(ctx, GL_INVALID_VALUE, "%s(GL_BGRA/GLubyte)", func);
 151          return;
 152       }
 153       format = GL_BGRA;
 154       size = 4;
 155    }
 156    else if (size < sizeMin || size > sizeMax || size > 4) {
 157       _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
 158       return;
 159    }
 160
 161    ASSERT(size <= 4);
 162
 163    if (stride < 0) {
 164       _mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
 165       return;
 166    }
 167
 168    if (ctx->Array.ArrayObj->VBOonly &&
 169        ctx->Array.ArrayBufferObj->Name == 0) {
 170       /* GL_ARB_vertex_array_object requires that all arrays reside in VBOs.
 171        * Generate GL_INVALID_OPERATION if that's not true.
 172        */
 173       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-VBO array)", func);
 174       return;
 175    }
 176
 177    elementSize = _mesa_sizeof_type(type) * size;
 178
 179    array->Size = size;
 180    array->Type = type;
 181    array->Format = format;
 182    array->Stride = stride;
 183    array->StrideB = stride ? stride : elementSize;
 184    array->Normalized = normalized;
 185    array->Ptr = (const GLubyte *) ptr;
 186    array->_ElementSize = elementSize;
 187
 188    _mesa_reference_buffer_object(ctx, &array->BufferObj,
 189                                  ctx->Array.ArrayBufferObj);
 190
 191    ctx->NewState |= _NEW_ARRAY;
 192    ctx->Array.NewState |= dirtyBit;
 193 }
 194
 195
 196 void GLAPIENTRY
 197 _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 198 {
 199    GLbitfield legalTypes = (SHORT_BIT | INT_BIT | FLOAT_BIT |
 200                             DOUBLE_BIT | HALF_BIT | FIXED_BIT);
 201    GET_CURRENT_CONTEXT(ctx);
 202    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 203
 204    if (ctx->API == API_OPENGLES)
 205       legalTypes |= BYTE_BIT;
 206
 207    update_array(ctx, "glVertexPointer",
 208                 &ctx->Array.ArrayObj->Vertex, _NEW_ARRAY_VERTEX,
 209                 legalTypes, 2, 4,
 210                 size, type, stride, GL_FALSE, GL_FALSE, ptr);
 211 }
 212
 213
 214 void GLAPIENTRY
 215 _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
 216 {
 217    const GLbitfield legalTypes = (BYTE_BIT | SHORT_BIT | INT_BIT |
 218                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 219                                   FIXED_BIT);
 220    GET_CURRENT_CONTEXT(ctx);
 221    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 222
 223    update_array(ctx, "glNormalPointer",
 224                 &ctx->Array.ArrayObj->Normal, _NEW_ARRAY_NORMAL,
 225                 legalTypes, 3, 3,
 226                 3, type, stride, GL_TRUE, GL_FALSE, ptr);
 227 }
 228
 229
 230 void GLAPIENTRY
 231 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 232 {
 233    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 234                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 235                                   INT_BIT | UNSIGNED_INT_BIT |
 236                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 237                                   FIXED_BIT);
 238    GET_CURRENT_CONTEXT(ctx);
 239    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 240
 241    update_array(ctx, "glColorPointer",
 242                 &ctx->Array.ArrayObj->Color, _NEW_ARRAY_COLOR0,
 243                 legalTypes, 3, BGRA_OR_4,
 244                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 245 }
 246
 247
 248 void GLAPIENTRY
 249 _mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr)
 250 {
 251    const GLbitfield legalTypes = (HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 252    GET_CURRENT_CONTEXT(ctx);
 253    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 254
 255    update_array(ctx, "glFogCoordPointer",
 256                 &ctx->Array.ArrayObj->FogCoord, _NEW_ARRAY_FOGCOORD,
 257                 legalTypes, 1, 1,
 258                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 259 }
 260
 261
 262 void GLAPIENTRY
 263 _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 264 {
 265    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT | INT_BIT |
 266                                   FLOAT_BIT | DOUBLE_BIT);
 267    GET_CURRENT_CONTEXT(ctx);
 268    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 269
 270    update_array(ctx, "glIndexPointer",
 271                 &ctx->Array.ArrayObj->Index, _NEW_ARRAY_INDEX,
 272                 legalTypes, 1, 1,
 273                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 274 }
 275
 276
 277 void GLAPIENTRY
 278 _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
 279                                GLsizei stride, const GLvoid *ptr)
 280 {
 281    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 282                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 283                                   INT_BIT | UNSIGNED_INT_BIT |
 284                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 285    GET_CURRENT_CONTEXT(ctx);
 286    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 287
 288    update_array(ctx, "glSecondaryColorPointer",
 289                 &ctx->Array.ArrayObj->SecondaryColor, _NEW_ARRAY_COLOR1,
 290                 legalTypes, 3, BGRA_OR_4,
 291                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 292 }
 293
 294
 295 void GLAPIENTRY
 296 _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 297                       const GLvoid *ptr)
 298 {
 299    GLbitfield legalTypes = (SHORT_BIT | INT_BIT |
 300                             HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 301    GET_CURRENT_CONTEXT(ctx);
 302    const GLuint unit = ctx->Array.ActiveTexture;
 303    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 304
 305    if (ctx->API == API_OPENGLES)
 306       legalTypes |= BYTE_BIT;
 307
 308    ASSERT(unit < Elements(ctx->Array.ArrayObj->TexCoord));
 309
 310    update_array(ctx, "glTexCoordPointer",
 311                 &ctx->Array.ArrayObj->TexCoord[unit],
 312                 _NEW_ARRAY_TEXCOORD(unit),
 313                 legalTypes, 1, 4,
 314                 size, type, stride, GL_FALSE, GL_FALSE,
 315                 ptr);
 316 }
 317
 318
 319 void GLAPIENTRY
 320 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
 321 {
 322    const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
 323    /* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
 324    const GLboolean integer = GL_TRUE;
 325    GET_CURRENT_CONTEXT(ctx);
 326    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 327
 328    update_array(ctx, "glEdgeFlagPointer",
 329                 &ctx->Array.ArrayObj->EdgeFlag, _NEW_ARRAY_EDGEFLAG,
 330                 legalTypes, 1, 1,
 331                 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
 332 }
 333
 334
 335 void GLAPIENTRY
 336 _mesa_PointSizePointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 337 {
 338    const GLbitfield legalTypes = (FLOAT_BIT | FIXED_BIT);
 339    GET_CURRENT_CONTEXT(ctx);
 340    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 341
 342    if (ctx->API != API_OPENGLES) {
 343       _mesa_error(ctx, GL_INVALID_OPERATION,
 344                   "glPointSizePointer(ES 1.x only)");
 345       return;
 346    }
 347
 348    update_array(ctx, "glPointSizePointer",
 349                 &ctx->Array.ArrayObj->PointSize, _NEW_ARRAY_POINT_SIZE,
 350                 legalTypes, 1, 1,
 351                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 352 }
 353
 354
 355 #if FEATURE_NV_vertex_program
 356 /**
 357  * Set a vertex attribute array.
 358  * Note that these arrays DO alias the conventional GL vertex arrays
 359  * (position, normal, color, fog, texcoord, etc).
 360  * The generic attribute slots at #16 and above are not touched.
 361  */
 362 void GLAPIENTRY
 363 _mesa_VertexAttribPointerNV(GLuint index, GLint size, GLenum type,
 364                             GLsizei stride, const GLvoid *ptr)
 365 {
 366    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT |
 367                                   FLOAT_BIT | DOUBLE_BIT);
 368    GLboolean normalized = GL_FALSE;
 369    GET_CURRENT_CONTEXT(ctx);
 370    ASSERT_OUTSIDE_BEGIN_END(ctx);
 371
 372    if (index >= MAX_NV_VERTEX_PROGRAM_INPUTS) {
 373       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(index)");
 374       return;
 375    }
 376
 377    if (type == GL_UNSIGNED_BYTE && size != 4) {
 378       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(size!=4)");
 379       return;
 380    }
 381
 382    update_array(ctx, "glVertexAttribPointerNV",
 383                 &ctx->Array.ArrayObj->VertexAttrib[index],
 384                 _NEW_ARRAY_ATTRIB(index),
 385                 legalTypes, 1, BGRA_OR_4,
 386                 size, type, stride, normalized, GL_FALSE, ptr);
 387 }
 388 #endif
 389
 390
 391 #if FEATURE_ARB_vertex_program
 392 /**
 393  * Set a generic vertex attribute array.
 394  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 395  * (position, normal, color, fog, texcoord, etc).
 396  */
 397 void GLAPIENTRY
 398 _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
 399                              GLboolean normalized,
 400                              GLsizei stride, const GLvoid *ptr)
 401 {
 402    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 403                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 404                                   INT_BIT | UNSIGNED_INT_BIT |
 405                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 406                                   FIXED_BIT);
 407    GET_CURRENT_CONTEXT(ctx);
 408    ASSERT_OUTSIDE_BEGIN_END(ctx);
 409
 410    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 411       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(index)");
 412       return;
 413    }
 414
 415    update_array(ctx, "glVertexAttribPointer",
 416                 &ctx->Array.ArrayObj->VertexAttrib[index],
 417                 _NEW_ARRAY_ATTRIB(index),
 418                 legalTypes, 1, BGRA_OR_4,
 419                 size, type, stride, normalized, GL_FALSE, ptr);
 420 }
 421 #endif
 422
 423
 424 /**
 425  * GL_EXT_gpu_shader4 / GL 3.0.
 426  * Set an integer-valued vertex attribute array.
 427  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 428  * (position, normal, color, fog, texcoord, etc).
 429  */
 430 void GLAPIENTRY
 431 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 432                            GLsizei stride, const GLvoid *ptr)
 433 {
 434    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 435                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 436                                   INT_BIT | UNSIGNED_INT_BIT);
 437    const GLboolean normalized = GL_FALSE;
 438    const GLboolean integer = GL_TRUE;
 439    GET_CURRENT_CONTEXT(ctx);
 440    ASSERT_OUTSIDE_BEGIN_END(ctx);
 441
 442    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 443       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribIPointer(index)");
 444       return;
 445    }
 446
 447    update_array(ctx, "glVertexAttribIPointer",
 448                 &ctx->Array.ArrayObj->VertexAttrib[index],
 449                 _NEW_ARRAY_ATTRIB(index),
 450                 legalTypes, 1, 4,
 451                 size, type, stride, normalized, integer, ptr);
 452 }
 453
 454
 455
 456 void GLAPIENTRY
 457 _mesa_EnableVertexAttribArrayARB(GLuint index)
 458 {
 459    GET_CURRENT_CONTEXT(ctx);
 460    ASSERT_OUTSIDE_BEGIN_END(ctx);
 461
 462    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 463       _mesa_error(ctx, GL_INVALID_VALUE,
 464                   "glEnableVertexAttribArrayARB(index)");
 465       return;
 466    }
 467
 468    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 469
 470    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 471    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_TRUE;
 472    ctx->Array.ArrayObj->_Enabled |= _NEW_ARRAY_ATTRIB(index);
 473    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 474 }
 475
 476
 477 void GLAPIENTRY
 478 _mesa_DisableVertexAttribArrayARB(GLuint index)
 479 {
 480    GET_CURRENT_CONTEXT(ctx);
 481    ASSERT_OUTSIDE_BEGIN_END(ctx);
 482
 483    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 484       _mesa_error(ctx, GL_INVALID_VALUE,
 485                   "glEnableVertexAttribArrayARB(index)");
 486       return;
 487    }
 488
 489    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 490
 491    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 492    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
 493    ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
 494    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 495 }
 496
 497
 498 /**
 499  * Return info for a vertex attribute array (no alias with legacy
 500  * vertex attributes (pos, normal, color, etc)).  This function does
 501  * not handle the 4-element GL_CURRENT_VERTEX_ATTRIB_ARB query.
 502  */
 503 static GLuint
 504 get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
 505                   const char *caller)
 506 {
 507    const struct gl_client_array *array;
 508
 509    if (index >= MAX_VERTEX_GENERIC_ATTRIBS) {
 510       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)", caller, index);
 511       return 0;
 512    }
 513
 514    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 515
 516    array = &ctx->Array.ArrayObj->VertexAttrib[index];
 517
 518    switch (pname) {
 519    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 520       return array->Enabled;
 521    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 522       return array->Size;
 523    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 524       return array->Stride;
 525    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 526       return array->Type;
 527    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 528       return array->Normalized;
 529    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 530       return array->BufferObj->Name;
 531    case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
 532       if (ctx->Extensions.EXT_gpu_shader4) {
 533          return array->Integer;
 534       }
 535       /* fall-through */
 536    default:
 537       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", caller, pname);
 538       return 0;
 539    }
 540 }
 541
 542
 543 void GLAPIENTRY
 544 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 545 {
 546    GET_CURRENT_CONTEXT(ctx);
 547    ASSERT_OUTSIDE_BEGIN_END(ctx);
 548
 549    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 550       if (index == 0) {
 551          _mesa_error(ctx, GL_INVALID_OPERATION,
 552                      "glGetVertexAttribfv(index==0)");
 553       }
 554       else {
 555          const GLfloat *v = ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index];
 556          FLUSH_CURRENT(ctx, 0);
 557          COPY_4V(params, v);
 558       }
 559    }
 560    else {
 561       params[0] = (GLfloat) get_vertex_array_attrib(ctx, index, pname,
 562                                                     "glGetVertexAttribfv");
 563    }
 564 }
 565
 566
 567 void GLAPIENTRY
 568 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 569 {
 570    GET_CURRENT_CONTEXT(ctx);
 571    ASSERT_OUTSIDE_BEGIN_END(ctx);
 572
 573    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 574       if (index == 0) {
 575          _mesa_error(ctx, GL_INVALID_OPERATION,
 576                      "glGetVertexAttribdv(index==0)");
 577       }
 578       else {
 579          const GLfloat *v = ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index];
 580          FLUSH_CURRENT(ctx, 0);
 581          params[0] = (GLdouble) v[0];
 582          params[1] = (GLdouble) v[1];
 583          params[2] = (GLdouble) v[2];
 584          params[3] = (GLdouble) v[3];
 585       }
 586    }
 587    else {
 588       params[0] = (GLdouble) get_vertex_array_attrib(ctx, index, pname,
 589                                                      "glGetVertexAttribdv");
 590    }
 591 }
 592
 593
 594 void GLAPIENTRY
 595 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 596 {
 597    GET_CURRENT_CONTEXT(ctx);
 598    ASSERT_OUTSIDE_BEGIN_END(ctx);
 599
 600    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 601       if (index == 0) {
 602          _mesa_error(ctx, GL_INVALID_OPERATION,
 603                      "glGetVertexAttribiv(index==0)");
 604       }
 605       else {
 606          const GLfloat *v = ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index];
 607          FLUSH_CURRENT(ctx, 0);
 608          /* XXX should floats in[0,1] be scaled to full int range? */
 609          params[0] = (GLint) v[0];
 610          params[1] = (GLint) v[1];
 611          params[2] = (GLint) v[2];
 612          params[3] = (GLint) v[3];
 613       }
 614    }
 615    else {
 616       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 617                                                   "glGetVertexAttribiv");
 618    }
 619 }
 620
 621
 622 /** GL 3.0 */
 623 void GLAPIENTRY
 624 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params)
 625 {
 626    GET_CURRENT_CONTEXT(ctx);
 627    ASSERT_OUTSIDE_BEGIN_END(ctx);
 628
 629    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 630       if (index == 0) {
 631          _mesa_error(ctx, GL_INVALID_OPERATION,
 632                      "glGetVertexAttribIiv(index==0)");
 633       }
 634       else {
 635          const GLfloat *v = ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index];
 636          FLUSH_CURRENT(ctx, 0);
 637          /* XXX we don't have true integer-valued vertex attribs yet */
 638          params[0] = (GLint) v[0];
 639          params[1] = (GLint) v[1];
 640          params[2] = (GLint) v[2];
 641          params[3] = (GLint) v[3];
 642       }
 643    }
 644    else {
 645       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 646                                                   "glGetVertexAttribIiv");
 647    }
 648 }
 649
 650
 651 /** GL 3.0 */
 652 void GLAPIENTRY
 653 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params)
 654 {
 655    GET_CURRENT_CONTEXT(ctx);
 656    ASSERT_OUTSIDE_BEGIN_END(ctx);
 657
 658    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 659       if (index == 0) {
 660          _mesa_error(ctx, GL_INVALID_OPERATION,
 661                      "glGetVertexAttribIuiv(index==0)");
 662       }
 663       else {
 664          const GLfloat *v = ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index];
 665          FLUSH_CURRENT(ctx, 0);
 666          /* XXX we don't have true integer-valued vertex attribs yet */
 667          params[0] = (GLuint) v[0];
 668          params[1] = (GLuint) v[1];
 669          params[2] = (GLuint) v[2];
 670          params[3] = (GLuint) v[3];
 671       }
 672    }
 673    else {
 674       params[0] = get_vertex_array_attrib(ctx, index, pname,
 675                                           "glGetVertexAttribIuiv");
 676    }
 677 }
 678
 679
 680 void GLAPIENTRY
 681 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 682 {
 683    GET_CURRENT_CONTEXT(ctx);
 684    ASSERT_OUTSIDE_BEGIN_END(ctx);
 685
 686    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 687       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 688       return;
 689    }
 690
 691    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 692       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 693       return;
 694    }
 695
 696    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 697
 698    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr;
 699 }
 700
 701
 702 void GLAPIENTRY
 703 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 704                        GLsizei count, const GLvoid *ptr)
 705 {
 706    (void) count;
 707    _mesa_VertexPointer(size, type, stride, ptr);
 708 }
 709
 710
 711 void GLAPIENTRY
 712 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 713                        const GLvoid *ptr)
 714 {
 715    (void) count;
 716    _mesa_NormalPointer(type, stride, ptr);
 717 }
 718
 719
 720 void GLAPIENTRY
 721 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 722                       const GLvoid *ptr)
 723 {
 724    (void) count;
 725    _mesa_ColorPointer(size, type, stride, ptr);
 726 }
 727
 728
 729 void GLAPIENTRY
 730 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 731                       const GLvoid *ptr)
 732 {
 733    (void) count;
 734    _mesa_IndexPointer(type, stride, ptr);
 735 }
 736
 737
 738 void GLAPIENTRY
 739 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 740                          GLsizei count, const GLvoid *ptr)
 741 {
 742    (void) count;
 743    _mesa_TexCoordPointer(size, type, stride, ptr);
 744 }
 745
 746
 747 void GLAPIENTRY
 748 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
 749 {
 750    (void) count;
 751    _mesa_EdgeFlagPointer(stride, ptr);
 752 }
 753
 754
 755 void GLAPIENTRY
 756 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
 757 {
 758    GET_CURRENT_CONTEXT(ctx);
 759    GLboolean tflag, cflag, nflag;  /* enable/disable flags */
 760    GLint tcomps, ccomps, vcomps;   /* components per texcoord, color, vertex */
 761    GLenum ctype = 0;               /* color type */
 762    GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
 763    const GLint toffset = 0;        /* always zero */
 764    GLint defstride;                /* default stride */
 765    GLint c, f;
 766
 767    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 768
 769    f = sizeof(GLfloat);
 770    c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
 771
 772    if (stride < 0) {
 773       _mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
 774       return;
 775    }
 776
 777    switch (format) {
 778       case GL_V2F:
 779          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 780          tcomps = 0;  ccomps = 0;  vcomps = 2;
 781          voffset = 0;
 782          defstride = 2*f;
 783          break;
 784       case GL_V3F:
 785          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 786          tcomps = 0;  ccomps = 0;  vcomps = 3;
 787          voffset = 0;
 788          defstride = 3*f;
 789          break;
 790       case GL_C4UB_V2F:
 791          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 792          tcomps = 0;  ccomps = 4;  vcomps = 2;
 793          ctype = GL_UNSIGNED_BYTE;
 794          coffset = 0;
 795          voffset = c;
 796          defstride = c + 2*f;
 797          break;
 798       case GL_C4UB_V3F:
 799          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 800          tcomps = 0;  ccomps = 4;  vcomps = 3;
 801          ctype = GL_UNSIGNED_BYTE;
 802          coffset = 0;
 803          voffset = c;
 804          defstride = c + 3*f;
 805          break;
 806       case GL_C3F_V3F:
 807          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 808          tcomps = 0;  ccomps = 3;  vcomps = 3;
 809          ctype = GL_FLOAT;
 810          coffset = 0;
 811          voffset = 3*f;
 812          defstride = 6*f;
 813          break;
 814       case GL_N3F_V3F:
 815          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 816          tcomps = 0;  ccomps = 0;  vcomps = 3;
 817          noffset = 0;
 818          voffset = 3*f;
 819          defstride = 6*f;
 820          break;
 821       case GL_C4F_N3F_V3F:
 822          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 823          tcomps = 0;  ccomps = 4;  vcomps = 3;
 824          ctype = GL_FLOAT;
 825          coffset = 0;
 826          noffset = 4*f;
 827          voffset = 7*f;
 828          defstride = 10*f;
 829          break;
 830       case GL_T2F_V3F:
 831          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 832          tcomps = 2;  ccomps = 0;  vcomps = 3;
 833          voffset = 2*f;
 834          defstride = 5*f;
 835          break;
 836       case GL_T4F_V4F:
 837          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 838          tcomps = 4;  ccomps = 0;  vcomps = 4;
 839          voffset = 4*f;
 840          defstride = 8*f;
 841          break;
 842       case GL_T2F_C4UB_V3F:
 843          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 844          tcomps = 2;  ccomps = 4;  vcomps = 3;
 845          ctype = GL_UNSIGNED_BYTE;
 846          coffset = 2*f;
 847          voffset = c+2*f;
 848          defstride = c+5*f;
 849          break;
 850       case GL_T2F_C3F_V3F:
 851          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 852          tcomps = 2;  ccomps = 3;  vcomps = 3;
 853          ctype = GL_FLOAT;
 854          coffset = 2*f;
 855          voffset = 5*f;
 856          defstride = 8*f;
 857          break;
 858       case GL_T2F_N3F_V3F:
 859          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 860          tcomps = 2;  ccomps = 0;  vcomps = 3;
 861          noffset = 2*f;
 862          voffset = 5*f;
 863          defstride = 8*f;
 864          break;
 865       case GL_T2F_C4F_N3F_V3F:
 866          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 867          tcomps = 2;  ccomps = 4;  vcomps = 3;
 868          ctype = GL_FLOAT;
 869          coffset = 2*f;
 870          noffset = 6*f;
 871          voffset = 9*f;
 872          defstride = 12*f;
 873          break;
 874       case GL_T4F_C4F_N3F_V4F:
 875          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 876          tcomps = 4;  ccomps = 4;  vcomps = 4;
 877          ctype = GL_FLOAT;
 878          coffset = 4*f;
 879          noffset = 8*f;
 880          voffset = 11*f;
 881          defstride = 15*f;
 882          break;
 883       default:
 884          _mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
 885          return;
 886    }
 887
 888    if (stride==0) {
 889       stride = defstride;
 890    }
 891
 892    _mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
 893    _mesa_DisableClientState( GL_INDEX_ARRAY );
 894    /* XXX also disable secondary color and generic arrays? */
 895
 896    /* Texcoords */
 897    if (tflag) {
 898       _mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
 899       _mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
 900                              (GLubyte *) pointer + toffset );
 901    }
 902    else {
 903       _mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
 904    }
 905
 906    /* Color */
 907    if (cflag) {
 908       _mesa_EnableClientState( GL_COLOR_ARRAY );
 909       _mesa_ColorPointer( ccomps, ctype, stride,
 910                           (GLubyte *) pointer + coffset );
 911    }
 912    else {
 913       _mesa_DisableClientState( GL_COLOR_ARRAY );
 914    }
 915
 916
 917    /* Normals */
 918    if (nflag) {
 919       _mesa_EnableClientState( GL_NORMAL_ARRAY );
 920       _mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
 921    }
 922    else {
 923       _mesa_DisableClientState( GL_NORMAL_ARRAY );
 924    }
 925
 926    /* Vertices */
 927    _mesa_EnableClientState( GL_VERTEX_ARRAY );
 928    _mesa_VertexPointer( vcomps, GL_FLOAT, stride,
 929                         (GLubyte *) pointer + voffset );
 930 }
 931
 932
 933 void GLAPIENTRY
 934 _mesa_LockArraysEXT(GLint first, GLsizei count)
 935 {
 936    GET_CURRENT_CONTEXT(ctx);
 937    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 938
 939    if (MESA_VERBOSE & VERBOSE_API)
 940       _mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
 941
 942    if (first < 0) {
 943       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
 944       return;
 945    }
 946    if (count <= 0) {
 947       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
 948       return;
 949    }
 950    if (ctx->Array.LockCount != 0) {
 951       _mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
 952       return;
 953    }
 954
 955    ctx->Array.LockFirst = first;
 956    ctx->Array.LockCount = count;
 957
 958    ctx->NewState |= _NEW_ARRAY;
 959    ctx->Array.NewState |= _NEW_ARRAY_ALL;
 960 }
 961
 962
 963 void GLAPIENTRY
 964 _mesa_UnlockArraysEXT( void )
 965 {
 966    GET_CURRENT_CONTEXT(ctx);
 967    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 968
 969    if (MESA_VERBOSE & VERBOSE_API)
 970       _mesa_debug(ctx, "glUnlockArrays\n");
 971
 972    if (ctx->Array.LockCount == 0) {
 973       _mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
 974       return;
 975    }
 976
 977    ctx->Array.LockFirst = 0;
 978    ctx->Array.LockCount = 0;
 979    ctx->NewState |= _NEW_ARRAY;
 980    ctx->Array.NewState |= _NEW_ARRAY_ALL;
 981 }
 982
 983
 984 /* GL_EXT_multi_draw_arrays */
 985 void GLAPIENTRY
 986 _mesa_MultiDrawArraysEXT( GLenum mode, const GLint *first,
 987                           const GLsizei *count, GLsizei primcount )
 988 {
 989    GET_CURRENT_CONTEXT(ctx);
 990    GLint i;
 991
 992    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 993
 994    for (i = 0; i < primcount; i++) {
 995       if (count[i] > 0) {
 996          CALL_DrawArrays(ctx->Exec, (mode, first[i], count[i]));
 997       }
 998    }
 999 }
1000
1001
1002 /* GL_IBM_multimode_draw_arrays */
1003 void GLAPIENTRY
1004 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
1005                               const GLsizei * count,
1006                               GLsizei primcount, GLint modestride )
1007 {
1008    GET_CURRENT_CONTEXT(ctx);
1009    GLint i;
1010
1011    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1012
1013    for ( i = 0 ; i < primcount ; i++ ) {
1014       if ( count[i] > 0 ) {
1015          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1016          CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
1017       }
1018    }
1019 }
1020
1021
1022 /* GL_IBM_multimode_draw_arrays */
1023 void GLAPIENTRY
1024 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
1025                                 GLenum type, const GLvoid * const * indices,
1026                                 GLsizei primcount, GLint modestride )
1027 {
1028    GET_CURRENT_CONTEXT(ctx);
1029    GLint i;
1030
1031    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1032
1033    /* XXX not sure about ARB_vertex_buffer_object handling here */
1034
1035    for ( i = 0 ; i < primcount ; i++ ) {
1036       if ( count[i] > 0 ) {
1037          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1038          CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
1039       }
1040    }
1041 }
1042
1043
1044 /**
1045  * GL_NV_primitive_restart and GL 3.1
1046  */
1047 void GLAPIENTRY
1048 _mesa_PrimitiveRestartIndex(GLuint index)
1049 {
1050    GET_CURRENT_CONTEXT(ctx);
1051
1052    if (!ctx->Extensions.NV_primitive_restart &&
1053        ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
1054       _mesa_error(ctx, GL_INVALID_OPERATION, "glPrimitiveRestartIndexNV()");
1055       return;
1056    }
1057
1058    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1059
1060    FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
1061
1062    ctx->Array.RestartIndex = index;
1063 }
1064
1065
1066 /**
1067  * Copy one client vertex array to another.
1068  */
1069 void
1070 _mesa_copy_client_array(struct gl_context *ctx,
1071                         struct gl_client_array *dst,
1072                         struct gl_client_array *src)
1073 {
1074    dst->Size = src->Size;
1075    dst->Type = src->Type;
1076    dst->Format = src->Format;
1077    dst->Stride = src->Stride;
1078    dst->StrideB = src->StrideB;
1079    dst->Ptr = src->Ptr;
1080    dst->Enabled = src->Enabled;
1081    dst->Normalized = src->Normalized;
1082    dst->Integer = src->Integer;
1083    dst->_ElementSize = src->_ElementSize;
1084    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1085    dst->_MaxElement = src->_MaxElement;
1086 }
1087
1088
1089
1090 /**
1091  * Print vertex array's fields.
1092  */
1093 static void
1094 print_array(const char *name, GLint index, const struct gl_client_array *array)
1095 {
1096    if (index >= 0)
1097       printf("  %s[%d]: ", name, index);
1098    else
1099       printf("  %s: ", name);
1100    printf("Ptr=%p, Type=0x%x, Size=%d, ElemSize=%u, Stride=%d, Buffer=%u(Size %lu), MaxElem=%u\n",
1101           array->Ptr, array->Type, array->Size,
1102           array->_ElementSize, array->StrideB,
1103           array->BufferObj->Name, (unsigned long) array->BufferObj->Size,
1104           array->_MaxElement);
1105 }
1106
1107
1108 /**
1109  * Print current vertex object/array info.  For debug.
1110  */
1111 void
1112 _mesa_print_arrays(struct gl_context *ctx)
1113 {
1114    struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
1115    GLuint i;
1116
1117    _mesa_update_array_object_max_element(ctx, arrayObj);
1118
1119    printf("Array Object %u\n", arrayObj->Name);
1120    if (arrayObj->Vertex.Enabled)
1121       print_array("Vertex", -1, &arrayObj->Vertex);
1122    if (arrayObj->Normal.Enabled)
1123       print_array("Normal", -1, &arrayObj->Normal);
1124    if (arrayObj->Color.Enabled)
1125       print_array("Color", -1, &arrayObj->Color);
1126    for (i = 0; i < Elements(arrayObj->TexCoord); i++)
1127       if (arrayObj->TexCoord[i].Enabled)
1128          print_array("TexCoord", i, &arrayObj->TexCoord[i]);
1129    for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)
1130       if (arrayObj->VertexAttrib[i].Enabled)
1131          print_array("Attrib", i, &arrayObj->VertexAttrib[i]);
1132    printf("  _MaxElement = %u\n", arrayObj->_MaxElement);
1133 }
1134
1135
1136 /**
1137  * Initialize vertex array state for given context.
1138  */
1139 void
1140 _mesa_init_varray(struct gl_context *ctx)
1141 {
1142    ctx->Array.DefaultArrayObj = _mesa_new_array_object(ctx, 0);
1143    _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj,
1144                                 ctx->Array.DefaultArrayObj);
1145    ctx->Array.ActiveTexture = 0;   /* GL_ARB_multitexture */
1146
1147    ctx->Array.Objects = _mesa_NewHashTable();
1148 }
1149
1150
1151 /**
1152  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
1153  */
1154 static void
1155 delete_arrayobj_cb(GLuint id, void *data, void *userData)
1156 {
1157    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
1158    struct gl_context *ctx = (struct gl_context *) userData;
1159    _mesa_delete_array_object(ctx, arrayObj);
1160 }
1161
1162
1163 /**
1164  * Free vertex array state for given context.
1165  */
1166 void
1167 _mesa_free_varray_data(struct gl_context *ctx)
1168 {
1169    _mesa_HashDeleteAll(ctx->Array.Objects, delete_arrayobj_cb, ctx);
1170    _mesa_DeleteHashTable(ctx->Array.Objects);
1171 }