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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #include "glheader.h"
  29 #include "imports.h"
  30 #include "bufferobj.h"
  31 #include "context.h"
  32 #include "enable.h"
  33 #include "enums.h"
  34 #include "hash.h"
  35 #include "image.h"
  36 #include "macros.h"
  37 #include "mtypes.h"
  38 #include "varray.h"
  39 #include "arrayobj.h"
  40 #include "main/dispatch.h"
  41
  42
  43 /** Used to do error checking for GL_EXT_vertex_array_bgra */
  44 #define BGRA_OR_4  5
  45
  46
  47 /** Used to indicate which GL datatypes are accepted by each of the
  48  * glVertex/Color/Attrib/EtcPointer() functions.
  49  */
  50 #define BOOL_BIT             0x1
  51 #define BYTE_BIT             0x2
  52 #define UNSIGNED_BYTE_BIT    0x4
  53 #define SHORT_BIT            0x8
  54 #define UNSIGNED_SHORT_BIT   0x10
  55 #define INT_BIT              0x20
  56 #define UNSIGNED_INT_BIT     0x40
  57 #define HALF_BIT             0x80
  58 #define FLOAT_BIT            0x100
  59 #define DOUBLE_BIT           0x200
  60 #define FIXED_ES_BIT         0x400
  61 #define FIXED_GL_BIT         0x800
  62 #define UNSIGNED_INT_2_10_10_10_REV_BIT 0x1000
  63 #define INT_2_10_10_10_REV_BIT 0x2000
  64
  65
  66 /** Convert GL datatype enum into a <type>_BIT value seen above */
  67 static GLbitfield
  68 type_to_bit(const struct gl_context *ctx, GLenum type)
  69 {
  70    switch (type) {
  71    case GL_BOOL:
  72       return BOOL_BIT;
  73    case GL_BYTE:
  74       return BYTE_BIT;
  75    case GL_UNSIGNED_BYTE:
  76       return UNSIGNED_BYTE_BIT;
  77    case GL_SHORT:
  78       return SHORT_BIT;
  79    case GL_UNSIGNED_SHORT:
  80       return UNSIGNED_SHORT_BIT;
  81    case GL_INT:
  82       return INT_BIT;
  83    case GL_UNSIGNED_INT:
  84       return UNSIGNED_INT_BIT;
  85    case GL_HALF_FLOAT:
  86       if (ctx->Extensions.ARB_half_float_vertex)
  87          return HALF_BIT;
  88       else
  89          return 0x0;
  90    case GL_FLOAT:
  91       return FLOAT_BIT;
  92    case GL_DOUBLE:
  93       return DOUBLE_BIT;
  94    case GL_FIXED:
  95       return _mesa_is_desktop_gl(ctx) ? FIXED_GL_BIT : FIXED_ES_BIT;
  96    case GL_UNSIGNED_INT_2_10_10_10_REV:
  97       return UNSIGNED_INT_2_10_10_10_REV_BIT;
  98    case GL_INT_2_10_10_10_REV:
  99       return INT_2_10_10_10_REV_BIT;
 100    default:
 101       return 0;
 102    }
 103 }
 104
 105
 106 /**
 107  * Do error checking and update state for glVertex/Color/TexCoord/...Pointer
 108  * functions.
 109  *
 110  * \param func  name of calling function used for error reporting
 111  * \param attrib  the attribute array index to update
 112  * \param legalTypes  bitmask of *_BIT above indicating legal datatypes
 113  * \param sizeMin  min allowable size value
 114  * \param sizeMax  max allowable size value (may also be BGRA_OR_4)
 115  * \param size  components per element (1, 2, 3 or 4)
 116  * \param type  datatype of each component (GL_FLOAT, GL_INT, etc)
 117  * \param stride  stride between elements, in elements
 118  * \param normalized  are integer types converted to floats in [-1, 1]?
 119  * \param integer  integer-valued values (will not be normalized to [-1,1])
 120  * \param ptr  the address (or offset inside VBO) of the array data
 121  */
 122 static void
 123 update_array(struct gl_context *ctx,
 124              const char *func,
 125              GLuint attrib, GLbitfield legalTypesMask,
 126              GLint sizeMin, GLint sizeMax,
 127              GLint size, GLenum type, GLsizei stride,
 128              GLboolean normalized, GLboolean integer,
 129              const GLvoid *ptr)
 130 {
 131    struct gl_client_array *array;
 132    GLbitfield typeBit;
 133    GLsizei elementSize;
 134    GLenum format = GL_RGBA;
 135
 136    /* Page 407 (page 423 of the PDF) of the OpenGL 3.0 spec says:
 137     *
 138     *     "Client vertex arrays - all vertex array attribute pointers must
 139     *     refer to buffer objects (section 2.9.2). The default vertex array
 140     *     object (the name zero) is also deprecated. Calling
 141     *     VertexAttribPointer when no buffer object or no vertex array object
 142     *     is bound will generate an INVALID_OPERATION error..."
 143     *
 144     * The check for VBOs is handled below.
 145     */
 146    if (ctx->API == API_OPENGL_CORE
 147        && (ctx->Array.ArrayObj == ctx->Array.DefaultArrayObj)) {
 148       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(no array object bound)",
 149                   func);
 150       return;
 151    }
 152
 153    if (_mesa_is_gles(ctx)) {
 154       legalTypesMask &= ~(FIXED_GL_BIT | DOUBLE_BIT);
 155
 156       /* GL_INT and GL_UNSIGNED_INT data is not allowed in OpenGL ES until
 157        * 3.0.  The 2_10_10_10 types are added in OpenGL ES 3.0 or
 158        * GL_OES_vertex_type_10_10_10_2.  GL_HALF_FLOAT data is not allowed
 159        * until 3.0 or with the GL_OES_vertex_half float extension, which isn't
 160        * quite as trivial as we'd like because it uses a different enum value
 161        * for GL_HALF_FLOAT_OES.
 162        */
 163       if (ctx->Version < 30) {
 164          legalTypesMask &= ~(UNSIGNED_INT_BIT
 165                              | INT_BIT
 166                              | UNSIGNED_INT_2_10_10_10_REV_BIT
 167                              | INT_2_10_10_10_REV_BIT
 168                              | HALF_BIT);
 169       }
 170
 171       /* BGRA ordering is not supported in ES contexts.
 172        */
 173       if (sizeMax == BGRA_OR_4)
 174          sizeMax = 4;
 175    } else {
 176       legalTypesMask &= ~FIXED_ES_BIT;
 177
 178       if (!ctx->Extensions.ARB_ES2_compatibility)
 179          legalTypesMask &= ~FIXED_GL_BIT;
 180
 181       if (!ctx->Extensions.ARB_vertex_type_2_10_10_10_rev)
 182          legalTypesMask &= ~(UNSIGNED_INT_2_10_10_10_REV_BIT |
 183                              INT_2_10_10_10_REV_BIT);
 184    }
 185
 186    typeBit = type_to_bit(ctx, type);
 187    if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
 188       _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
 189                   func, _mesa_lookup_enum_by_nr(type));
 190       return;
 191    }
 192
 193    /* Do size parameter checking.
 194     * If sizeMax = BGRA_OR_4 it means that size = GL_BGRA is legal and
 195     * must be handled specially.
 196     */
 197    if (ctx->Extensions.EXT_vertex_array_bgra &&
 198        sizeMax == BGRA_OR_4 &&
 199        size == GL_BGRA) {
 200       GLboolean bgra_error = GL_FALSE;
 201
 202       if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev) {
 203          if (type != GL_UNSIGNED_INT_2_10_10_10_REV &&
 204              type != GL_INT_2_10_10_10_REV &&
 205              type != GL_UNSIGNED_BYTE)
 206             bgra_error = GL_TRUE;
 207       } else if (type != GL_UNSIGNED_BYTE)
 208          bgra_error = GL_TRUE;
 209
 210       if (bgra_error) {
 211          _mesa_error(ctx, GL_INVALID_VALUE, "%s(GL_BGRA/GLubyte)", func);
 212          return;
 213       }
 214       format = GL_BGRA;
 215       size = 4;
 216    }
 217    else if (size < sizeMin || size > sizeMax || size > 4) {
 218       _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
 219       return;
 220    }
 221
 222    if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
 223        (type == GL_UNSIGNED_INT_2_10_10_10_REV ||
 224         type == GL_INT_2_10_10_10_REV) && size != 4) {
 225       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=%d)", func, size);
 226       return;
 227    }
 228
 229    ASSERT(size <= 4);
 230
 231    if (stride < 0) {
 232       _mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
 233       return;
 234    }
 235
 236    /* Page 29 (page 44 of the PDF) of the OpenGL 3.3 spec says:
 237     *
 238     *     "An INVALID_OPERATION error is generated under any of the following
 239     *     conditions:
 240     *
 241     *     ...
 242     *
 243     *     * any of the *Pointer commands specifying the location and
 244     *       organization of vertex array data are called while zero is bound
 245     *       to the ARRAY_BUFFER buffer object binding point (see section
 246     *       2.9.6), and the pointer argument is not NULL."
 247     */
 248    if (ptr != NULL && ctx->Array.ArrayObj->ARBsemantics &&
 249        !_mesa_is_bufferobj(ctx->Array.ArrayBufferObj)) {
 250       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-VBO array)", func);
 251       return;
 252    }
 253
 254    elementSize = _mesa_bytes_per_vertex_attrib(size, type);
 255    assert(elementSize != -1);
 256
 257    array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
 258    array->Size = size;
 259    array->Type = type;
 260    array->Format = format;
 261    array->Stride = stride;
 262    array->StrideB = stride ? stride : elementSize;
 263    array->Normalized = normalized;
 264    array->Integer = integer;
 265    array->Ptr = (const GLubyte *) ptr;
 266    array->_ElementSize = elementSize;
 267
 268    _mesa_reference_buffer_object(ctx, &array->BufferObj,
 269                                  ctx->Array.ArrayBufferObj);
 270
 271    ctx->NewState |= _NEW_ARRAY;
 272 }
 273
 274
 275 void GLAPIENTRY
 276 _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 277 {
 278    GET_CURRENT_CONTEXT(ctx);
 279    GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 280       ? (BYTE_BIT | SHORT_BIT | FLOAT_BIT | FIXED_ES_BIT)
 281       : (SHORT_BIT | INT_BIT | FLOAT_BIT |
 282          DOUBLE_BIT | HALF_BIT |
 283          UNSIGNED_INT_2_10_10_10_REV_BIT |
 284          INT_2_10_10_10_REV_BIT);
 285
 286    FLUSH_VERTICES(ctx, 0);
 287
 288    update_array(ctx, "glVertexPointer", VERT_ATTRIB_POS,
 289                 legalTypes, 2, 4,
 290                 size, type, stride, GL_FALSE, GL_FALSE, ptr);
 291 }
 292
 293
 294 void GLAPIENTRY
 295 _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
 296 {
 297    GET_CURRENT_CONTEXT(ctx);
 298    const GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 299       ? (BYTE_BIT | SHORT_BIT | FLOAT_BIT | FIXED_ES_BIT)
 300       : (BYTE_BIT | SHORT_BIT | INT_BIT |
 301          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 302          UNSIGNED_INT_2_10_10_10_REV_BIT |
 303          INT_2_10_10_10_REV_BIT);
 304
 305    FLUSH_VERTICES(ctx, 0);
 306
 307    update_array(ctx, "glNormalPointer", VERT_ATTRIB_NORMAL,
 308                 legalTypes, 3, 3,
 309                 3, type, stride, GL_TRUE, GL_FALSE, ptr);
 310 }
 311
 312
 313 void GLAPIENTRY
 314 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 315 {
 316    GET_CURRENT_CONTEXT(ctx);
 317    const GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 318       ? (UNSIGNED_BYTE_BIT | HALF_BIT | FLOAT_BIT | FIXED_ES_BIT)
 319       : (BYTE_BIT | UNSIGNED_BYTE_BIT |
 320          SHORT_BIT | UNSIGNED_SHORT_BIT |
 321          INT_BIT | UNSIGNED_INT_BIT |
 322          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 323          UNSIGNED_INT_2_10_10_10_REV_BIT |
 324          INT_2_10_10_10_REV_BIT);
 325    const GLint sizeMin = (ctx->API == API_OPENGLES) ? 4 : 3;
 326
 327    FLUSH_VERTICES(ctx, 0);
 328
 329    update_array(ctx, "glColorPointer", VERT_ATTRIB_COLOR0,
 330                 legalTypes, sizeMin, BGRA_OR_4,
 331                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 332 }
 333
 334
 335 void GLAPIENTRY
 336 _mesa_FogCoordPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 337 {
 338    const GLbitfield legalTypes = (HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 339    GET_CURRENT_CONTEXT(ctx);
 340
 341    FLUSH_VERTICES(ctx, 0);
 342
 343    update_array(ctx, "glFogCoordPointer", VERT_ATTRIB_FOG,
 344                 legalTypes, 1, 1,
 345                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 346 }
 347
 348
 349 void GLAPIENTRY
 350 _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 351 {
 352    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT | INT_BIT |
 353                                   FLOAT_BIT | DOUBLE_BIT);
 354    GET_CURRENT_CONTEXT(ctx);
 355
 356    FLUSH_VERTICES(ctx, 0);
 357
 358    update_array(ctx, "glIndexPointer", VERT_ATTRIB_COLOR_INDEX,
 359                 legalTypes, 1, 1,
 360                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 361 }
 362
 363
 364 void GLAPIENTRY
 365 _mesa_SecondaryColorPointer(GLint size, GLenum type,
 366                                GLsizei stride, const GLvoid *ptr)
 367 {
 368    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 369                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 370                                   INT_BIT | UNSIGNED_INT_BIT |
 371                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 372                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 373                                   INT_2_10_10_10_REV_BIT);
 374    GET_CURRENT_CONTEXT(ctx);
 375
 376    FLUSH_VERTICES(ctx, 0);
 377
 378    update_array(ctx, "glSecondaryColorPointer", VERT_ATTRIB_COLOR1,
 379                 legalTypes, 3, BGRA_OR_4,
 380                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 381 }
 382
 383
 384 void GLAPIENTRY
 385 _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 386                       const GLvoid *ptr)
 387 {
 388    GET_CURRENT_CONTEXT(ctx);
 389    GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 390       ? (BYTE_BIT | SHORT_BIT | FLOAT_BIT | FIXED_ES_BIT)
 391       : (SHORT_BIT | INT_BIT |
 392          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 393          UNSIGNED_INT_2_10_10_10_REV_BIT |
 394          INT_2_10_10_10_REV_BIT);
 395    const GLint sizeMin = (ctx->API == API_OPENGLES) ? 2 : 1;
 396    const GLuint unit = ctx->Array.ActiveTexture;
 397
 398    FLUSH_VERTICES(ctx, 0);
 399
 400    update_array(ctx, "glTexCoordPointer", VERT_ATTRIB_TEX(unit),
 401                 legalTypes, sizeMin, 4,
 402                 size, type, stride, GL_FALSE, GL_FALSE,
 403                 ptr);
 404 }
 405
 406
 407 void GLAPIENTRY
 408 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
 409 {
 410    const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
 411    /* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
 412    const GLboolean integer = GL_TRUE;
 413    GET_CURRENT_CONTEXT(ctx);
 414
 415    FLUSH_VERTICES(ctx, 0);
 416
 417    update_array(ctx, "glEdgeFlagPointer", VERT_ATTRIB_EDGEFLAG,
 418                 legalTypes, 1, 1,
 419                 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
 420 }
 421
 422
 423 void GLAPIENTRY
 424 _mesa_PointSizePointerOES(GLenum type, GLsizei stride, const GLvoid *ptr)
 425 {
 426    const GLbitfield legalTypes = (FLOAT_BIT | FIXED_ES_BIT);
 427    GET_CURRENT_CONTEXT(ctx);
 428
 429    FLUSH_VERTICES(ctx, 0);
 430
 431    if (ctx->API != API_OPENGLES) {
 432       _mesa_error(ctx, GL_INVALID_OPERATION,
 433                   "glPointSizePointer(ES 1.x only)");
 434       return;
 435    }
 436
 437    update_array(ctx, "glPointSizePointer", VERT_ATTRIB_POINT_SIZE,
 438                 legalTypes, 1, 1,
 439                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 440 }
 441
 442
 443 /**
 444  * Set a generic vertex attribute array.
 445  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 446  * (position, normal, color, fog, texcoord, etc).
 447  */
 448 void GLAPIENTRY
 449 _mesa_VertexAttribPointer(GLuint index, GLint size, GLenum type,
 450                              GLboolean normalized,
 451                              GLsizei stride, const GLvoid *ptr)
 452 {
 453    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 454                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 455                                   INT_BIT | UNSIGNED_INT_BIT |
 456                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 457                                   FIXED_ES_BIT | FIXED_GL_BIT |
 458                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 459                                   INT_2_10_10_10_REV_BIT);
 460    GET_CURRENT_CONTEXT(ctx);
 461
 462    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 463       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(index)");
 464       return;
 465    }
 466
 467    update_array(ctx, "glVertexAttribPointer", VERT_ATTRIB_GENERIC(index),
 468                 legalTypes, 1, BGRA_OR_4,
 469                 size, type, stride, normalized, GL_FALSE, ptr);
 470 }
 471
 472
 473 /**
 474  * GL_EXT_gpu_shader4 / GL 3.0.
 475  * Set an integer-valued vertex attribute array.
 476  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 477  * (position, normal, color, fog, texcoord, etc).
 478  */
 479 void GLAPIENTRY
 480 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 481                            GLsizei stride, const GLvoid *ptr)
 482 {
 483    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 484                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 485                                   INT_BIT | UNSIGNED_INT_BIT);
 486    const GLboolean normalized = GL_FALSE;
 487    const GLboolean integer = GL_TRUE;
 488    GET_CURRENT_CONTEXT(ctx);
 489
 490    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 491       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribIPointer(index)");
 492       return;
 493    }
 494
 495    update_array(ctx, "glVertexAttribIPointer", VERT_ATTRIB_GENERIC(index),
 496                 legalTypes, 1, 4,
 497                 size, type, stride, normalized, integer, ptr);
 498 }
 499
 500
 501
 502 void GLAPIENTRY
 503 _mesa_EnableVertexAttribArray(GLuint index)
 504 {
 505    struct gl_array_object *arrayObj;
 506    GET_CURRENT_CONTEXT(ctx);
 507
 508    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 509       _mesa_error(ctx, GL_INVALID_VALUE,
 510                   "glEnableVertexAttribArrayARB(index)");
 511       return;
 512    }
 513
 514    arrayObj = ctx->Array.ArrayObj;
 515
 516    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 517
 518    if (!arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 519       /* was disabled, now being enabled */
 520       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 521       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_TRUE;
 522       arrayObj->_Enabled |= VERT_BIT_GENERIC(index);
 523    }
 524 }
 525
 526
 527 void GLAPIENTRY
 528 _mesa_DisableVertexAttribArray(GLuint index)
 529 {
 530    struct gl_array_object *arrayObj;
 531    GET_CURRENT_CONTEXT(ctx);
 532
 533    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 534       _mesa_error(ctx, GL_INVALID_VALUE,
 535                   "glDisableVertexAttribArrayARB(index)");
 536       return;
 537    }
 538
 539    arrayObj = ctx->Array.ArrayObj;
 540
 541    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 542
 543    if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 544       /* was enabled, now being disabled */
 545       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 546       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_FALSE;
 547       arrayObj->_Enabled &= ~VERT_BIT_GENERIC(index);
 548    }
 549 }
 550
 551
 552 /**
 553  * Return info for a vertex attribute array (no alias with legacy
 554  * vertex attributes (pos, normal, color, etc)).  This function does
 555  * not handle the 4-element GL_CURRENT_VERTEX_ATTRIB_ARB query.
 556  */
 557 static GLuint
 558 get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
 559                   const char *caller)
 560 {
 561    const struct gl_client_array *array;
 562
 563    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 564       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)", caller, index);
 565       return 0;
 566    }
 567
 568    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 569
 570    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
 571
 572    switch (pname) {
 573    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 574       return array->Enabled;
 575    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 576       return array->Size;
 577    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 578       return array->Stride;
 579    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 580       return array->Type;
 581    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 582       return array->Normalized;
 583    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 584       return array->BufferObj->Name;
 585    case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
 586       if ((_mesa_is_desktop_gl(ctx)
 587            && (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))
 588           || _mesa_is_gles3(ctx)) {
 589          return array->Integer;
 590       }
 591       goto error;
 592    case GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ARB:
 593       if ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_instanced_arrays)
 594           || _mesa_is_gles3(ctx)) {
 595          return array->InstanceDivisor;
 596       }
 597       goto error;
 598    default:
 599       ; /* fall-through */
 600    }
 601
 602 error:
 603    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", caller, pname);
 604    return 0;
 605 }
 606
 607
 608 static const GLfloat *
 609 get_current_attrib(struct gl_context *ctx, GLuint index, const char *function)
 610 {
 611    if (index == 0) {
 612       /* In OpenGL 3.1 attribute 0 becomes non-magic, just like in OpenGL ES
 613        * 2.0.  Note that we cannot just check for API_OPENGL_CORE here because
 614        * that will erroneously allow this usage in a 3.0 forward-compatible
 615        * context too.
 616        */
 617       if ((ctx->API != API_OPENGL_CORE || ctx->Version < 31)
 618           && ctx->API != API_OPENGLES2) {
 619          _mesa_error(ctx, GL_INVALID_OPERATION, "%s(index==0)", function);
 620          return NULL;
 621       }
 622    }
 623    else if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 624       _mesa_error(ctx, GL_INVALID_VALUE,
 625                   "%s(index>=GL_MAX_VERTEX_ATTRIBS)", function);
 626       return NULL;
 627    }
 628
 629    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 630
 631    FLUSH_CURRENT(ctx, 0);
 632    return ctx->Current.Attrib[VERT_ATTRIB_GENERIC(index)];
 633 }
 634
 635 void GLAPIENTRY
 636 _mesa_GetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params)
 637 {
 638    GET_CURRENT_CONTEXT(ctx);
 639
 640    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 641       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribfv");
 642       if (v != NULL) {
 643          COPY_4V(params, v);
 644       }
 645    }
 646    else {
 647       params[0] = (GLfloat) get_vertex_array_attrib(ctx, index, pname,
 648                                                     "glGetVertexAttribfv");
 649    }
 650 }
 651
 652
 653 void GLAPIENTRY
 654 _mesa_GetVertexAttribdv(GLuint index, GLenum pname, GLdouble *params)
 655 {
 656    GET_CURRENT_CONTEXT(ctx);
 657
 658    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 659       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribdv");
 660       if (v != NULL) {
 661          params[0] = (GLdouble) v[0];
 662          params[1] = (GLdouble) v[1];
 663          params[2] = (GLdouble) v[2];
 664          params[3] = (GLdouble) v[3];
 665       }
 666    }
 667    else {
 668       params[0] = (GLdouble) get_vertex_array_attrib(ctx, index, pname,
 669                                                      "glGetVertexAttribdv");
 670    }
 671 }
 672
 673
 674 void GLAPIENTRY
 675 _mesa_GetVertexAttribiv(GLuint index, GLenum pname, GLint *params)
 676 {
 677    GET_CURRENT_CONTEXT(ctx);
 678
 679    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 680       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribiv");
 681       if (v != NULL) {
 682          /* XXX should floats in[0,1] be scaled to full int range? */
 683          params[0] = (GLint) v[0];
 684          params[1] = (GLint) v[1];
 685          params[2] = (GLint) v[2];
 686          params[3] = (GLint) v[3];
 687       }
 688    }
 689    else {
 690       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 691                                                   "glGetVertexAttribiv");
 692    }
 693 }
 694
 695
 696 /** GL 3.0 */
 697 void GLAPIENTRY
 698 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params)
 699 {
 700    GET_CURRENT_CONTEXT(ctx);
 701
 702    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 703       const GLint *v = (const GLint *)
 704          get_current_attrib(ctx, index, "glGetVertexAttribIiv");
 705       if (v != NULL) {
 706          COPY_4V(params, v);
 707       }
 708    }
 709    else {
 710       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 711                                                   "glGetVertexAttribIiv");
 712    }
 713 }
 714
 715
 716 /** GL 3.0 */
 717 void GLAPIENTRY
 718 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params)
 719 {
 720    GET_CURRENT_CONTEXT(ctx);
 721
 722    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 723       const GLuint *v = (const GLuint *)
 724          get_current_attrib(ctx, index, "glGetVertexAttribIuiv");
 725       if (v != NULL) {
 726          COPY_4V(params, v);
 727       }
 728    }
 729    else {
 730       params[0] = get_vertex_array_attrib(ctx, index, pname,
 731                                           "glGetVertexAttribIuiv");
 732    }
 733 }
 734
 735
 736 void GLAPIENTRY
 737 _mesa_GetVertexAttribPointerv(GLuint index, GLenum pname, GLvoid **pointer)
 738 {
 739    GET_CURRENT_CONTEXT(ctx);
 740
 741    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 742       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 743       return;
 744    }
 745
 746    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 747       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 748       return;
 749    }
 750
 751    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 752
 753    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Ptr;
 754 }
 755
 756
 757 void GLAPIENTRY
 758 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 759                        GLsizei count, const GLvoid *ptr)
 760 {
 761    (void) count;
 762    _mesa_VertexPointer(size, type, stride, ptr);
 763 }
 764
 765
 766 void GLAPIENTRY
 767 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 768                        const GLvoid *ptr)
 769 {
 770    (void) count;
 771    _mesa_NormalPointer(type, stride, ptr);
 772 }
 773
 774
 775 void GLAPIENTRY
 776 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 777                       const GLvoid *ptr)
 778 {
 779    (void) count;
 780    _mesa_ColorPointer(size, type, stride, ptr);
 781 }
 782
 783
 784 void GLAPIENTRY
 785 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 786                       const GLvoid *ptr)
 787 {
 788    (void) count;
 789    _mesa_IndexPointer(type, stride, ptr);
 790 }
 791
 792
 793 void GLAPIENTRY
 794 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 795                          GLsizei count, const GLvoid *ptr)
 796 {
 797    (void) count;
 798    _mesa_TexCoordPointer(size, type, stride, ptr);
 799 }
 800
 801
 802 void GLAPIENTRY
 803 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
 804 {
 805    (void) count;
 806    _mesa_EdgeFlagPointer(stride, ptr);
 807 }
 808
 809
 810 void GLAPIENTRY
 811 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
 812 {
 813    GET_CURRENT_CONTEXT(ctx);
 814    GLboolean tflag, cflag, nflag;  /* enable/disable flags */
 815    GLint tcomps, ccomps, vcomps;   /* components per texcoord, color, vertex */
 816    GLenum ctype = 0;               /* color type */
 817    GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
 818    const GLint toffset = 0;        /* always zero */
 819    GLint defstride;                /* default stride */
 820    GLint c, f;
 821
 822    FLUSH_VERTICES(ctx, 0);
 823
 824    f = sizeof(GLfloat);
 825    c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
 826
 827    if (stride < 0) {
 828       _mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
 829       return;
 830    }
 831
 832    switch (format) {
 833       case GL_V2F:
 834          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 835          tcomps = 0;  ccomps = 0;  vcomps = 2;
 836          voffset = 0;
 837          defstride = 2*f;
 838          break;
 839       case GL_V3F:
 840          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 841          tcomps = 0;  ccomps = 0;  vcomps = 3;
 842          voffset = 0;
 843          defstride = 3*f;
 844          break;
 845       case GL_C4UB_V2F:
 846          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 847          tcomps = 0;  ccomps = 4;  vcomps = 2;
 848          ctype = GL_UNSIGNED_BYTE;
 849          coffset = 0;
 850          voffset = c;
 851          defstride = c + 2*f;
 852          break;
 853       case GL_C4UB_V3F:
 854          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 855          tcomps = 0;  ccomps = 4;  vcomps = 3;
 856          ctype = GL_UNSIGNED_BYTE;
 857          coffset = 0;
 858          voffset = c;
 859          defstride = c + 3*f;
 860          break;
 861       case GL_C3F_V3F:
 862          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 863          tcomps = 0;  ccomps = 3;  vcomps = 3;
 864          ctype = GL_FLOAT;
 865          coffset = 0;
 866          voffset = 3*f;
 867          defstride = 6*f;
 868          break;
 869       case GL_N3F_V3F:
 870          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 871          tcomps = 0;  ccomps = 0;  vcomps = 3;
 872          noffset = 0;
 873          voffset = 3*f;
 874          defstride = 6*f;
 875          break;
 876       case GL_C4F_N3F_V3F:
 877          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 878          tcomps = 0;  ccomps = 4;  vcomps = 3;
 879          ctype = GL_FLOAT;
 880          coffset = 0;
 881          noffset = 4*f;
 882          voffset = 7*f;
 883          defstride = 10*f;
 884          break;
 885       case GL_T2F_V3F:
 886          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 887          tcomps = 2;  ccomps = 0;  vcomps = 3;
 888          voffset = 2*f;
 889          defstride = 5*f;
 890          break;
 891       case GL_T4F_V4F:
 892          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 893          tcomps = 4;  ccomps = 0;  vcomps = 4;
 894          voffset = 4*f;
 895          defstride = 8*f;
 896          break;
 897       case GL_T2F_C4UB_V3F:
 898          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 899          tcomps = 2;  ccomps = 4;  vcomps = 3;
 900          ctype = GL_UNSIGNED_BYTE;
 901          coffset = 2*f;
 902          voffset = c+2*f;
 903          defstride = c+5*f;
 904          break;
 905       case GL_T2F_C3F_V3F:
 906          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 907          tcomps = 2;  ccomps = 3;  vcomps = 3;
 908          ctype = GL_FLOAT;
 909          coffset = 2*f;
 910          voffset = 5*f;
 911          defstride = 8*f;
 912          break;
 913       case GL_T2F_N3F_V3F:
 914          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 915          tcomps = 2;  ccomps = 0;  vcomps = 3;
 916          noffset = 2*f;
 917          voffset = 5*f;
 918          defstride = 8*f;
 919          break;
 920       case GL_T2F_C4F_N3F_V3F:
 921          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 922          tcomps = 2;  ccomps = 4;  vcomps = 3;
 923          ctype = GL_FLOAT;
 924          coffset = 2*f;
 925          noffset = 6*f;
 926          voffset = 9*f;
 927          defstride = 12*f;
 928          break;
 929       case GL_T4F_C4F_N3F_V4F:
 930          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 931          tcomps = 4;  ccomps = 4;  vcomps = 4;
 932          ctype = GL_FLOAT;
 933          coffset = 4*f;
 934          noffset = 8*f;
 935          voffset = 11*f;
 936          defstride = 15*f;
 937          break;
 938       default:
 939          _mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
 940          return;
 941    }
 942
 943    if (stride==0) {
 944       stride = defstride;
 945    }
 946
 947    _mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
 948    _mesa_DisableClientState( GL_INDEX_ARRAY );
 949    /* XXX also disable secondary color and generic arrays? */
 950
 951    /* Texcoords */
 952    if (tflag) {
 953       _mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
 954       _mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
 955                              (GLubyte *) pointer + toffset );
 956    }
 957    else {
 958       _mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
 959    }
 960
 961    /* Color */
 962    if (cflag) {
 963       _mesa_EnableClientState( GL_COLOR_ARRAY );
 964       _mesa_ColorPointer( ccomps, ctype, stride,
 965                           (GLubyte *) pointer + coffset );
 966    }
 967    else {
 968       _mesa_DisableClientState( GL_COLOR_ARRAY );
 969    }
 970
 971
 972    /* Normals */
 973    if (nflag) {
 974       _mesa_EnableClientState( GL_NORMAL_ARRAY );
 975       _mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
 976    }
 977    else {
 978       _mesa_DisableClientState( GL_NORMAL_ARRAY );
 979    }
 980
 981    /* Vertices */
 982    _mesa_EnableClientState( GL_VERTEX_ARRAY );
 983    _mesa_VertexPointer( vcomps, GL_FLOAT, stride,
 984                         (GLubyte *) pointer + voffset );
 985 }
 986
 987
 988 void GLAPIENTRY
 989 _mesa_LockArraysEXT(GLint first, GLsizei count)
 990 {
 991    GET_CURRENT_CONTEXT(ctx);
 992
 993    FLUSH_VERTICES(ctx, 0);
 994
 995    if (MESA_VERBOSE & VERBOSE_API)
 996       _mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
 997
 998    if (first < 0) {
 999       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
1000       return;
1001    }
1002    if (count <= 0) {
1003       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
1004       return;
1005    }
1006    if (ctx->Array.LockCount != 0) {
1007       _mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
1008       return;
1009    }
1010
1011    ctx->Array.LockFirst = first;
1012    ctx->Array.LockCount = count;
1013
1014    ctx->NewState |= _NEW_ARRAY;
1015 }
1016
1017
1018 void GLAPIENTRY
1019 _mesa_UnlockArraysEXT( void )
1020 {
1021    GET_CURRENT_CONTEXT(ctx);
1022
1023    FLUSH_VERTICES(ctx, 0);
1024
1025    if (MESA_VERBOSE & VERBOSE_API)
1026       _mesa_debug(ctx, "glUnlockArrays\n");
1027
1028    if (ctx->Array.LockCount == 0) {
1029       _mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
1030       return;
1031    }
1032
1033    ctx->Array.LockFirst = 0;
1034    ctx->Array.LockCount = 0;
1035    ctx->NewState |= _NEW_ARRAY;
1036 }
1037
1038
1039 /* GL_EXT_multi_draw_arrays */
1040 void GLAPIENTRY
1041 _mesa_MultiDrawArrays( GLenum mode, const GLint *first,
1042                           const GLsizei *count, GLsizei primcount )
1043 {
1044    GET_CURRENT_CONTEXT(ctx);
1045    GLint i;
1046
1047    FLUSH_VERTICES(ctx, 0);
1048
1049    for (i = 0; i < primcount; i++) {
1050       if (count[i] > 0) {
1051          CALL_DrawArrays(ctx->Exec, (mode, first[i], count[i]));
1052       }
1053    }
1054 }
1055
1056
1057 /* GL_IBM_multimode_draw_arrays */
1058 void GLAPIENTRY
1059 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
1060                               const GLsizei * count,
1061                               GLsizei primcount, GLint modestride )
1062 {
1063    GET_CURRENT_CONTEXT(ctx);
1064    GLint i;
1065
1066    FLUSH_VERTICES(ctx, 0);
1067
1068    for ( i = 0 ; i < primcount ; i++ ) {
1069       if ( count[i] > 0 ) {
1070          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1071          CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
1072       }
1073    }
1074 }
1075
1076
1077 /* GL_IBM_multimode_draw_arrays */
1078 void GLAPIENTRY
1079 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
1080                                 GLenum type, const GLvoid * const * indices,
1081                                 GLsizei primcount, GLint modestride )
1082 {
1083    GET_CURRENT_CONTEXT(ctx);
1084    GLint i;
1085
1086    FLUSH_VERTICES(ctx, 0);
1087
1088    /* XXX not sure about ARB_vertex_buffer_object handling here */
1089
1090    for ( i = 0 ; i < primcount ; i++ ) {
1091       if ( count[i] > 0 ) {
1092          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1093          CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
1094       }
1095    }
1096 }
1097
1098
1099 /**
1100  * GL_NV_primitive_restart and GL 3.1
1101  */
1102 void GLAPIENTRY
1103 _mesa_PrimitiveRestartIndex(GLuint index)
1104 {
1105    GET_CURRENT_CONTEXT(ctx);
1106
1107    if (!ctx->Extensions.NV_primitive_restart && ctx->Version < 31) {
1108       _mesa_error(ctx, GL_INVALID_OPERATION, "glPrimitiveRestartIndexNV()");
1109       return;
1110    }
1111
1112    ctx->Array.RestartIndex = index;
1113    if (ctx->Array.PrimitiveRestart && ctx->Array._RestartIndex != index) {
1114       FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
1115       ctx->Array._RestartIndex = index;
1116    }
1117 }
1118
1119
1120 /**
1121  * See GL_ARB_instanced_arrays.
1122  * Note that the instance divisor only applies to generic arrays, not
1123  * the legacy vertex arrays.
1124  */
1125 void GLAPIENTRY
1126 _mesa_VertexAttribDivisor(GLuint index, GLuint divisor)
1127 {
1128    struct gl_client_array *array;
1129    GET_CURRENT_CONTEXT(ctx);
1130
1131    if (!ctx->Extensions.ARB_instanced_arrays) {
1132       _mesa_error(ctx, GL_INVALID_OPERATION, "glVertexAttribDivisor()");
1133       return;
1134    }
1135
1136    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
1137       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribDivisor(index = %u)",
1138                   index);
1139       return;
1140    }
1141
1142    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
1143
1144    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
1145    if (array->InstanceDivisor != divisor) {
1146       FLUSH_VERTICES(ctx, _NEW_ARRAY);
1147       array->InstanceDivisor = divisor;
1148    }
1149 }
1150
1151
1152
1153 /**
1154  * Copy one client vertex array to another.
1155  */
1156 void
1157 _mesa_copy_client_array(struct gl_context *ctx,
1158                         struct gl_client_array *dst,
1159                         struct gl_client_array *src)
1160 {
1161    dst->Size = src->Size;
1162    dst->Type = src->Type;
1163    dst->Format = src->Format;
1164    dst->Stride = src->Stride;
1165    dst->StrideB = src->StrideB;
1166    dst->Ptr = src->Ptr;
1167    dst->Enabled = src->Enabled;
1168    dst->Normalized = src->Normalized;
1169    dst->Integer = src->Integer;
1170    dst->InstanceDivisor = src->InstanceDivisor;
1171    dst->_ElementSize = src->_ElementSize;
1172    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1173    dst->_MaxElement = src->_MaxElement;
1174 }
1175
1176
1177
1178 /**
1179  * Print vertex array's fields.
1180  */
1181 static void
1182 print_array(const char *name, GLint index, const struct gl_client_array *array)
1183 {
1184    if (index >= 0)
1185       printf("  %s[%d]: ", name, index);
1186    else
1187       printf("  %s: ", name);
1188    printf("Ptr=%p, Type=0x%x, Size=%d, ElemSize=%u, Stride=%d, Buffer=%u(Size %lu), MaxElem=%u\n",
1189           array->Ptr, array->Type, array->Size,
1190           array->_ElementSize, array->StrideB,
1191           array->BufferObj->Name, (unsigned long) array->BufferObj->Size,
1192           array->_MaxElement);
1193 }
1194
1195
1196 /**
1197  * Print current vertex object/array info.  For debug.
1198  */
1199 void
1200 _mesa_print_arrays(struct gl_context *ctx)
1201 {
1202    struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
1203    GLuint i;
1204
1205    _mesa_update_array_object_max_element(ctx, arrayObj);
1206
1207    printf("Array Object %u\n", arrayObj->Name);
1208    if (arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled)
1209       print_array("Vertex", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);
1210    if (arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled)
1211       print_array("Normal", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);
1212    if (arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled)
1213       print_array("Color", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);
1214    for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)
1215       if (arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)].Enabled)
1216          print_array("TexCoord", i, &arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)]);
1217    for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++)
1218       if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)].Enabled)
1219          print_array("Attrib", i, &arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)]);
1220    printf("  _MaxElement = %u\n", arrayObj->_MaxElement);
1221 }
1222
1223
1224 /**
1225  * Initialize vertex array state for given context.
1226  */
1227 void
1228 _mesa_init_varray(struct gl_context *ctx)
1229 {
1230    ctx->Array.DefaultArrayObj = ctx->Driver.NewArrayObject(ctx, 0);
1231    _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj,
1232                                 ctx->Array.DefaultArrayObj);
1233    ctx->Array.ActiveTexture = 0;   /* GL_ARB_multitexture */
1234
1235    ctx->Array.Objects = _mesa_NewHashTable();
1236 }
1237
1238
1239 /**
1240  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
1241  */
1242 static void
1243 delete_arrayobj_cb(GLuint id, void *data, void *userData)
1244 {
1245    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
1246    struct gl_context *ctx = (struct gl_context *) userData;
1247    _mesa_delete_array_object(ctx, arrayObj);
1248 }
1249
1250
1251 /**
1252  * Free vertex array state for given context.
1253  */
1254 void
1255 _mesa_free_varray_data(struct gl_context *ctx)
1256 {
1257    _mesa_HashDeleteAll(ctx->Array.Objects, delete_arrayobj_cb, ctx);
1258    _mesa_DeleteHashTable(ctx->Array.Objects);
1259 }