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 "mfeatures.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    if (_mesa_is_gles(ctx)) {
 137       /* Once Mesa gets support for GL_OES_vertex_half_float this mask will
 138        * change.  Adding support for this extension isn't quite as trivial as
 139        * we'd like because ES uses a different enum value for GL_HALF_FLOAT.
 140        */
 141       legalTypesMask &= ~(FIXED_GL_BIT | HALF_BIT | DOUBLE_BIT);
 142
 143       /* GL_INT and GL_UNSIGNED_INT data is not allowed in OpenGL ES until
 144        * 3.0.  The 2_10_10_10 types are added in OpenGL ES 3.0 or
 145        * GL_OES_vertex_type_10_10_10_2.
 146        */
 147       if (ctx->Version < 30) {
 148          legalTypesMask &= ~(UNSIGNED_INT_BIT
 149                              | INT_BIT
 150                              | UNSIGNED_INT_2_10_10_10_REV_BIT
 151                              | INT_2_10_10_10_REV_BIT);
 152       }
 153
 154       /* BGRA ordering is not supported in ES contexts.
 155        */
 156       if (sizeMax == BGRA_OR_4)
 157          sizeMax = 4;
 158    } else {
 159       legalTypesMask &= ~FIXED_ES_BIT;
 160
 161       if (!ctx->Extensions.ARB_ES2_compatibility)
 162          legalTypesMask &= ~FIXED_GL_BIT;
 163
 164       if (!ctx->Extensions.ARB_vertex_type_2_10_10_10_rev)
 165          legalTypesMask &= ~(UNSIGNED_INT_2_10_10_10_REV_BIT |
 166                              INT_2_10_10_10_REV_BIT);
 167    }
 168
 169    typeBit = type_to_bit(ctx, type);
 170    if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
 171       _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
 172                   func, _mesa_lookup_enum_by_nr(type));
 173       return;
 174    }
 175
 176    /* Do size parameter checking.
 177     * If sizeMax = BGRA_OR_4 it means that size = GL_BGRA is legal and
 178     * must be handled specially.
 179     */
 180    if (ctx->Extensions.EXT_vertex_array_bgra &&
 181        sizeMax == BGRA_OR_4 &&
 182        size == GL_BGRA) {
 183       GLboolean bgra_error = GL_FALSE;
 184
 185       if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev) {
 186          if (type != GL_UNSIGNED_INT_2_10_10_10_REV &&
 187              type != GL_INT_2_10_10_10_REV &&
 188              type != GL_UNSIGNED_BYTE)
 189             bgra_error = GL_TRUE;
 190       } else if (type != GL_UNSIGNED_BYTE)
 191          bgra_error = GL_TRUE;
 192
 193       if (bgra_error) {
 194          _mesa_error(ctx, GL_INVALID_VALUE, "%s(GL_BGRA/GLubyte)", func);
 195          return;
 196       }
 197       format = GL_BGRA;
 198       size = 4;
 199    }
 200    else if (size < sizeMin || size > sizeMax || size > 4) {
 201       _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
 202       return;
 203    }
 204
 205    if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
 206        (type == GL_UNSIGNED_INT_2_10_10_10_REV ||
 207         type == GL_INT_2_10_10_10_REV) && size != 4) {
 208       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=%d)", func, size);
 209       return;
 210    }
 211
 212    ASSERT(size <= 4);
 213
 214    if (stride < 0) {
 215       _mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
 216       return;
 217    }
 218
 219    if (ctx->Array.ArrayObj->ARBsemantics &&
 220        !_mesa_is_bufferobj(ctx->Array.ArrayBufferObj)) {
 221       /* GL_ARB_vertex_array_object requires that all arrays reside in VBOs.
 222        * Generate GL_INVALID_OPERATION if that's not true.
 223        */
 224       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-VBO array)", func);
 225       return;
 226    }
 227
 228    elementSize = _mesa_sizeof_type(type) * size;
 229
 230    array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
 231    array->Size = size;
 232    array->Type = type;
 233    array->Format = format;
 234    array->Stride = stride;
 235    array->StrideB = stride ? stride : elementSize;
 236    array->Normalized = normalized;
 237    array->Integer = integer;
 238    array->Ptr = (const GLubyte *) ptr;
 239    array->_ElementSize = elementSize;
 240
 241    _mesa_reference_buffer_object(ctx, &array->BufferObj,
 242                                  ctx->Array.ArrayBufferObj);
 243
 244    ctx->NewState |= _NEW_ARRAY;
 245    ctx->Array.ArrayObj->NewArrays |= VERT_BIT(attrib);
 246 }
 247
 248
 249 void GLAPIENTRY
 250 _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 251 {
 252    GLbitfield legalTypes = (SHORT_BIT | INT_BIT | FLOAT_BIT |
 253                             DOUBLE_BIT | HALF_BIT | FIXED_ES_BIT |
 254                             UNSIGNED_INT_2_10_10_10_REV_BIT |
 255                             INT_2_10_10_10_REV_BIT);
 256    GET_CURRENT_CONTEXT(ctx);
 257    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 258
 259    if (ctx->API == API_OPENGLES)
 260       legalTypes |= BYTE_BIT;
 261
 262    update_array(ctx, "glVertexPointer", VERT_ATTRIB_POS,
 263                 legalTypes, 2, 4,
 264                 size, type, stride, GL_FALSE, GL_FALSE, ptr);
 265 }
 266
 267
 268 void GLAPIENTRY
 269 _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
 270 {
 271    GET_CURRENT_CONTEXT(ctx);
 272    const GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 273       ? (BYTE_BIT | SHORT_BIT | FLOAT_BIT | FIXED_ES_BIT)
 274       : (BYTE_BIT | SHORT_BIT | INT_BIT |
 275          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 276          UNSIGNED_INT_2_10_10_10_REV_BIT |
 277          INT_2_10_10_10_REV_BIT);
 278    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 279
 280    update_array(ctx, "glNormalPointer", VERT_ATTRIB_NORMAL,
 281                 legalTypes, 3, 3,
 282                 3, type, stride, GL_TRUE, GL_FALSE, ptr);
 283 }
 284
 285
 286 void GLAPIENTRY
 287 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 288 {
 289    GET_CURRENT_CONTEXT(ctx);
 290    const GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 291       ? (UNSIGNED_BYTE_BIT | HALF_BIT | FLOAT_BIT | FIXED_ES_BIT)
 292       : (BYTE_BIT | UNSIGNED_BYTE_BIT |
 293          SHORT_BIT | UNSIGNED_SHORT_BIT |
 294          INT_BIT | UNSIGNED_INT_BIT |
 295          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 296          UNSIGNED_INT_2_10_10_10_REV_BIT |
 297          INT_2_10_10_10_REV_BIT);
 298    const GLint sizeMin = (ctx->API == API_OPENGLES) ? 4 : 3;
 299    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 300
 301    update_array(ctx, "glColorPointer", VERT_ATTRIB_COLOR0,
 302                 legalTypes, sizeMin, BGRA_OR_4,
 303                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 304 }
 305
 306
 307 void GLAPIENTRY
 308 _mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr)
 309 {
 310    const GLbitfield legalTypes = (HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 311    GET_CURRENT_CONTEXT(ctx);
 312    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 313
 314    update_array(ctx, "glFogCoordPointer", VERT_ATTRIB_FOG,
 315                 legalTypes, 1, 1,
 316                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 317 }
 318
 319
 320 void GLAPIENTRY
 321 _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 322 {
 323    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT | INT_BIT |
 324                                   FLOAT_BIT | DOUBLE_BIT);
 325    GET_CURRENT_CONTEXT(ctx);
 326    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 327
 328    update_array(ctx, "glIndexPointer", VERT_ATTRIB_COLOR_INDEX,
 329                 legalTypes, 1, 1,
 330                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 331 }
 332
 333
 334 void GLAPIENTRY
 335 _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
 336                                GLsizei stride, const GLvoid *ptr)
 337 {
 338    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 339                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 340                                   INT_BIT | UNSIGNED_INT_BIT |
 341                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 342                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 343                                   INT_2_10_10_10_REV_BIT);
 344    GET_CURRENT_CONTEXT(ctx);
 345    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 346
 347    update_array(ctx, "glSecondaryColorPointer", VERT_ATTRIB_COLOR1,
 348                 legalTypes, 3, BGRA_OR_4,
 349                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 350 }
 351
 352
 353 void GLAPIENTRY
 354 _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 355                       const GLvoid *ptr)
 356 {
 357    GET_CURRENT_CONTEXT(ctx);
 358    GLbitfield legalTypes = (ctx->API == API_OPENGLES)
 359       ? (BYTE_BIT | SHORT_BIT | FLOAT_BIT | FIXED_ES_BIT)
 360       : (SHORT_BIT | INT_BIT |
 361          HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 362          UNSIGNED_INT_2_10_10_10_REV_BIT |
 363          INT_2_10_10_10_REV_BIT);
 364    const GLuint unit = ctx->Array.ActiveTexture;
 365    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 366
 367    update_array(ctx, "glTexCoordPointer", VERT_ATTRIB_TEX(unit),
 368                 legalTypes, 1, 4,
 369                 size, type, stride, GL_FALSE, GL_FALSE,
 370                 ptr);
 371 }
 372
 373
 374 void GLAPIENTRY
 375 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
 376 {
 377    const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
 378    /* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
 379    const GLboolean integer = GL_TRUE;
 380    GET_CURRENT_CONTEXT(ctx);
 381    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 382
 383    update_array(ctx, "glEdgeFlagPointer", VERT_ATTRIB_EDGEFLAG,
 384                 legalTypes, 1, 1,
 385                 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
 386 }
 387
 388
 389 void GLAPIENTRY
 390 _mesa_PointSizePointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 391 {
 392    const GLbitfield legalTypes = (FLOAT_BIT | FIXED_ES_BIT);
 393    GET_CURRENT_CONTEXT(ctx);
 394    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 395
 396    if (ctx->API != API_OPENGLES) {
 397       _mesa_error(ctx, GL_INVALID_OPERATION,
 398                   "glPointSizePointer(ES 1.x only)");
 399       return;
 400    }
 401
 402    update_array(ctx, "glPointSizePointer", VERT_ATTRIB_POINT_SIZE,
 403                 legalTypes, 1, 1,
 404                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 405 }
 406
 407
 408 #if FEATURE_NV_vertex_program
 409 /**
 410  * Set a vertex attribute array.
 411  * Note that these arrays DO alias the conventional GL vertex arrays
 412  * (position, normal, color, fog, texcoord, etc).
 413  * The generic attribute slots at #16 and above are not touched.
 414  */
 415 void GLAPIENTRY
 416 _mesa_VertexAttribPointerNV(GLuint index, GLint size, GLenum type,
 417                             GLsizei stride, const GLvoid *ptr)
 418 {
 419    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT |
 420                                   FLOAT_BIT | DOUBLE_BIT);
 421    GLboolean normalized = GL_FALSE;
 422    GET_CURRENT_CONTEXT(ctx);
 423    ASSERT_OUTSIDE_BEGIN_END(ctx);
 424
 425    if (index >= MAX_NV_VERTEX_PROGRAM_INPUTS) {
 426       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(index)");
 427       return;
 428    }
 429
 430    if (type == GL_UNSIGNED_BYTE && size != 4) {
 431       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(size!=4)");
 432       return;
 433    }
 434
 435    update_array(ctx, "glVertexAttribPointerNV", VERT_ATTRIB_GENERIC(index),
 436                 legalTypes, 1, BGRA_OR_4,
 437                 size, type, stride, normalized, GL_FALSE, ptr);
 438 }
 439 #endif
 440
 441
 442 #if FEATURE_ARB_vertex_program
 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_VertexAttribPointerARB(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    ASSERT_OUTSIDE_BEGIN_END(ctx);
 462
 463    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 464       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(index)");
 465       return;
 466    }
 467
 468    update_array(ctx, "glVertexAttribPointer", VERT_ATTRIB_GENERIC(index),
 469                 legalTypes, 1, BGRA_OR_4,
 470                 size, type, stride, normalized, GL_FALSE, ptr);
 471 }
 472 #endif
 473
 474
 475 /**
 476  * GL_EXT_gpu_shader4 / GL 3.0.
 477  * Set an integer-valued vertex attribute array.
 478  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 479  * (position, normal, color, fog, texcoord, etc).
 480  */
 481 void GLAPIENTRY
 482 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 483                            GLsizei stride, const GLvoid *ptr)
 484 {
 485    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 486                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 487                                   INT_BIT | UNSIGNED_INT_BIT);
 488    const GLboolean normalized = GL_FALSE;
 489    const GLboolean integer = GL_TRUE;
 490    GET_CURRENT_CONTEXT(ctx);
 491    ASSERT_OUTSIDE_BEGIN_END(ctx);
 492
 493    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 494       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribIPointer(index)");
 495       return;
 496    }
 497
 498    update_array(ctx, "glVertexAttribIPointer", VERT_ATTRIB_GENERIC(index),
 499                 legalTypes, 1, 4,
 500                 size, type, stride, normalized, integer, ptr);
 501 }
 502
 503
 504
 505 void GLAPIENTRY
 506 _mesa_EnableVertexAttribArrayARB(GLuint index)
 507 {
 508    struct gl_array_object *arrayObj;
 509    GET_CURRENT_CONTEXT(ctx);
 510    ASSERT_OUTSIDE_BEGIN_END(ctx);
 511
 512    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 513       _mesa_error(ctx, GL_INVALID_VALUE,
 514                   "glEnableVertexAttribArrayARB(index)");
 515       return;
 516    }
 517
 518    arrayObj = ctx->Array.ArrayObj;
 519
 520    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 521
 522    if (!arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 523       /* was disabled, now being enabled */
 524       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 525       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_TRUE;
 526       arrayObj->_Enabled |= VERT_BIT_GENERIC(index);
 527       arrayObj->NewArrays |= VERT_BIT_GENERIC(index);
 528    }
 529 }
 530
 531
 532 void GLAPIENTRY
 533 _mesa_DisableVertexAttribArrayARB(GLuint index)
 534 {
 535    struct gl_array_object *arrayObj;
 536    GET_CURRENT_CONTEXT(ctx);
 537    ASSERT_OUTSIDE_BEGIN_END(ctx);
 538
 539    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 540       _mesa_error(ctx, GL_INVALID_VALUE,
 541                   "glDisableVertexAttribArrayARB(index)");
 542       return;
 543    }
 544
 545    arrayObj = ctx->Array.ArrayObj;
 546
 547    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 548
 549    if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 550       /* was enabled, now being disabled */
 551       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 552       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_FALSE;
 553       arrayObj->_Enabled &= ~VERT_BIT_GENERIC(index);
 554       arrayObj->NewArrays |= VERT_BIT_GENERIC(index);
 555    }
 556 }
 557
 558
 559 /**
 560  * Return info for a vertex attribute array (no alias with legacy
 561  * vertex attributes (pos, normal, color, etc)).  This function does
 562  * not handle the 4-element GL_CURRENT_VERTEX_ATTRIB_ARB query.
 563  */
 564 static GLuint
 565 get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
 566                   const char *caller)
 567 {
 568    const struct gl_client_array *array;
 569
 570    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 571       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)", caller, index);
 572       return 0;
 573    }
 574
 575    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 576
 577    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
 578
 579    switch (pname) {
 580    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 581       return array->Enabled;
 582    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 583       return array->Size;
 584    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 585       return array->Stride;
 586    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 587       return array->Type;
 588    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 589       return array->Normalized;
 590    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 591       return array->BufferObj->Name;
 592    case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
 593       if (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4) {
 594          return array->Integer;
 595       }
 596       goto error;
 597    case GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ARB:
 598       if (ctx->Extensions.ARB_instanced_arrays) {
 599          return array->InstanceDivisor;
 600       }
 601       goto error;
 602    default:
 603       ; /* fall-through */
 604    }
 605
 606 error:
 607    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", caller, pname);
 608    return 0;
 609 }
 610
 611
 612 static const GLfloat *
 613 get_current_attrib(struct gl_context *ctx, GLuint index, const char *function)
 614 {
 615    if (index == 0) {
 616       if (ctx->API != API_OPENGLES2) {
 617          _mesa_error(ctx, GL_INVALID_OPERATION, "%s(index==0)", function);
 618          return NULL;
 619       }
 620    }
 621    else if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 622       _mesa_error(ctx, GL_INVALID_VALUE,
 623                   "%s(index>=GL_MAX_VERTEX_ATTRIBS)", function);
 624       return NULL;
 625    }
 626
 627    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 628
 629    FLUSH_CURRENT(ctx, 0);
 630    return ctx->Current.Attrib[VERT_ATTRIB_GENERIC(index)];
 631 }
 632
 633 void GLAPIENTRY
 634 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 635 {
 636    GET_CURRENT_CONTEXT(ctx);
 637    ASSERT_OUTSIDE_BEGIN_END(ctx);
 638
 639    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 640       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribfv");
 641       if (v != NULL) {
 642          COPY_4V(params, v);
 643       }
 644    }
 645    else {
 646       params[0] = (GLfloat) get_vertex_array_attrib(ctx, index, pname,
 647                                                     "glGetVertexAttribfv");
 648    }
 649 }
 650
 651
 652 void GLAPIENTRY
 653 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 654 {
 655    GET_CURRENT_CONTEXT(ctx);
 656    ASSERT_OUTSIDE_BEGIN_END(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_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 676 {
 677    GET_CURRENT_CONTEXT(ctx);
 678    ASSERT_OUTSIDE_BEGIN_END(ctx);
 679
 680    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 681       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribiv");
 682       if (v != NULL) {
 683          /* XXX should floats in[0,1] be scaled to full int range? */
 684          params[0] = (GLint) v[0];
 685          params[1] = (GLint) v[1];
 686          params[2] = (GLint) v[2];
 687          params[3] = (GLint) v[3];
 688       }
 689    }
 690    else {
 691       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 692                                                   "glGetVertexAttribiv");
 693    }
 694 }
 695
 696
 697 /** GL 3.0 */
 698 void GLAPIENTRY
 699 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params)
 700 {
 701    GET_CURRENT_CONTEXT(ctx);
 702    ASSERT_OUTSIDE_BEGIN_END(ctx);
 703
 704    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 705       const GLfloat *v =
 706          get_current_attrib(ctx, index, "glGetVertexAttribIiv");
 707       if (v != NULL) {
 708          /* XXX we don't have true integer-valued vertex attribs yet */
 709          params[0] = (GLint) v[0];
 710          params[1] = (GLint) v[1];
 711          params[2] = (GLint) v[2];
 712          params[3] = (GLint) v[3];
 713       }
 714    }
 715    else {
 716       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 717                                                   "glGetVertexAttribIiv");
 718    }
 719 }
 720
 721
 722 /** GL 3.0 */
 723 void GLAPIENTRY
 724 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params)
 725 {
 726    GET_CURRENT_CONTEXT(ctx);
 727    ASSERT_OUTSIDE_BEGIN_END(ctx);
 728
 729    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 730       const GLfloat *v =
 731          get_current_attrib(ctx, index, "glGetVertexAttribIuiv");
 732       if (v != NULL) {
 733          /* XXX we don't have true integer-valued vertex attribs yet */
 734          params[0] = (GLuint) v[0];
 735          params[1] = (GLuint) v[1];
 736          params[2] = (GLuint) v[2];
 737          params[3] = (GLuint) v[3];
 738       }
 739    }
 740    else {
 741       params[0] = get_vertex_array_attrib(ctx, index, pname,
 742                                           "glGetVertexAttribIuiv");
 743    }
 744 }
 745
 746
 747 void GLAPIENTRY
 748 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 749 {
 750    GET_CURRENT_CONTEXT(ctx);
 751    ASSERT_OUTSIDE_BEGIN_END(ctx);
 752
 753    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 754       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 755       return;
 756    }
 757
 758    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 759       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 760       return;
 761    }
 762
 763    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 764
 765    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Ptr;
 766 }
 767
 768
 769 void GLAPIENTRY
 770 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 771                        GLsizei count, const GLvoid *ptr)
 772 {
 773    (void) count;
 774    _mesa_VertexPointer(size, type, stride, ptr);
 775 }
 776
 777
 778 void GLAPIENTRY
 779 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 780                        const GLvoid *ptr)
 781 {
 782    (void) count;
 783    _mesa_NormalPointer(type, stride, ptr);
 784 }
 785
 786
 787 void GLAPIENTRY
 788 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 789                       const GLvoid *ptr)
 790 {
 791    (void) count;
 792    _mesa_ColorPointer(size, type, stride, ptr);
 793 }
 794
 795
 796 void GLAPIENTRY
 797 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 798                       const GLvoid *ptr)
 799 {
 800    (void) count;
 801    _mesa_IndexPointer(type, stride, ptr);
 802 }
 803
 804
 805 void GLAPIENTRY
 806 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 807                          GLsizei count, const GLvoid *ptr)
 808 {
 809    (void) count;
 810    _mesa_TexCoordPointer(size, type, stride, ptr);
 811 }
 812
 813
 814 void GLAPIENTRY
 815 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
 816 {
 817    (void) count;
 818    _mesa_EdgeFlagPointer(stride, ptr);
 819 }
 820
 821
 822 void GLAPIENTRY
 823 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
 824 {
 825    GET_CURRENT_CONTEXT(ctx);
 826    GLboolean tflag, cflag, nflag;  /* enable/disable flags */
 827    GLint tcomps, ccomps, vcomps;   /* components per texcoord, color, vertex */
 828    GLenum ctype = 0;               /* color type */
 829    GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
 830    const GLint toffset = 0;        /* always zero */
 831    GLint defstride;                /* default stride */
 832    GLint c, f;
 833
 834    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 835
 836    f = sizeof(GLfloat);
 837    c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
 838
 839    if (stride < 0) {
 840       _mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
 841       return;
 842    }
 843
 844    switch (format) {
 845       case GL_V2F:
 846          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 847          tcomps = 0;  ccomps = 0;  vcomps = 2;
 848          voffset = 0;
 849          defstride = 2*f;
 850          break;
 851       case GL_V3F:
 852          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 853          tcomps = 0;  ccomps = 0;  vcomps = 3;
 854          voffset = 0;
 855          defstride = 3*f;
 856          break;
 857       case GL_C4UB_V2F:
 858          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 859          tcomps = 0;  ccomps = 4;  vcomps = 2;
 860          ctype = GL_UNSIGNED_BYTE;
 861          coffset = 0;
 862          voffset = c;
 863          defstride = c + 2*f;
 864          break;
 865       case GL_C4UB_V3F:
 866          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 867          tcomps = 0;  ccomps = 4;  vcomps = 3;
 868          ctype = GL_UNSIGNED_BYTE;
 869          coffset = 0;
 870          voffset = c;
 871          defstride = c + 3*f;
 872          break;
 873       case GL_C3F_V3F:
 874          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 875          tcomps = 0;  ccomps = 3;  vcomps = 3;
 876          ctype = GL_FLOAT;
 877          coffset = 0;
 878          voffset = 3*f;
 879          defstride = 6*f;
 880          break;
 881       case GL_N3F_V3F:
 882          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 883          tcomps = 0;  ccomps = 0;  vcomps = 3;
 884          noffset = 0;
 885          voffset = 3*f;
 886          defstride = 6*f;
 887          break;
 888       case GL_C4F_N3F_V3F:
 889          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 890          tcomps = 0;  ccomps = 4;  vcomps = 3;
 891          ctype = GL_FLOAT;
 892          coffset = 0;
 893          noffset = 4*f;
 894          voffset = 7*f;
 895          defstride = 10*f;
 896          break;
 897       case GL_T2F_V3F:
 898          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 899          tcomps = 2;  ccomps = 0;  vcomps = 3;
 900          voffset = 2*f;
 901          defstride = 5*f;
 902          break;
 903       case GL_T4F_V4F:
 904          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 905          tcomps = 4;  ccomps = 0;  vcomps = 4;
 906          voffset = 4*f;
 907          defstride = 8*f;
 908          break;
 909       case GL_T2F_C4UB_V3F:
 910          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 911          tcomps = 2;  ccomps = 4;  vcomps = 3;
 912          ctype = GL_UNSIGNED_BYTE;
 913          coffset = 2*f;
 914          voffset = c+2*f;
 915          defstride = c+5*f;
 916          break;
 917       case GL_T2F_C3F_V3F:
 918          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 919          tcomps = 2;  ccomps = 3;  vcomps = 3;
 920          ctype = GL_FLOAT;
 921          coffset = 2*f;
 922          voffset = 5*f;
 923          defstride = 8*f;
 924          break;
 925       case GL_T2F_N3F_V3F:
 926          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 927          tcomps = 2;  ccomps = 0;  vcomps = 3;
 928          noffset = 2*f;
 929          voffset = 5*f;
 930          defstride = 8*f;
 931          break;
 932       case GL_T2F_C4F_N3F_V3F:
 933          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 934          tcomps = 2;  ccomps = 4;  vcomps = 3;
 935          ctype = GL_FLOAT;
 936          coffset = 2*f;
 937          noffset = 6*f;
 938          voffset = 9*f;
 939          defstride = 12*f;
 940          break;
 941       case GL_T4F_C4F_N3F_V4F:
 942          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 943          tcomps = 4;  ccomps = 4;  vcomps = 4;
 944          ctype = GL_FLOAT;
 945          coffset = 4*f;
 946          noffset = 8*f;
 947          voffset = 11*f;
 948          defstride = 15*f;
 949          break;
 950       default:
 951          _mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
 952          return;
 953    }
 954
 955    if (stride==0) {
 956       stride = defstride;
 957    }
 958
 959    _mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
 960    _mesa_DisableClientState( GL_INDEX_ARRAY );
 961    /* XXX also disable secondary color and generic arrays? */
 962
 963    /* Texcoords */
 964    if (tflag) {
 965       _mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
 966       _mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
 967                              (GLubyte *) pointer + toffset );
 968    }
 969    else {
 970       _mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
 971    }
 972
 973    /* Color */
 974    if (cflag) {
 975       _mesa_EnableClientState( GL_COLOR_ARRAY );
 976       _mesa_ColorPointer( ccomps, ctype, stride,
 977                           (GLubyte *) pointer + coffset );
 978    }
 979    else {
 980       _mesa_DisableClientState( GL_COLOR_ARRAY );
 981    }
 982
 983
 984    /* Normals */
 985    if (nflag) {
 986       _mesa_EnableClientState( GL_NORMAL_ARRAY );
 987       _mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
 988    }
 989    else {
 990       _mesa_DisableClientState( GL_NORMAL_ARRAY );
 991    }
 992
 993    /* Vertices */
 994    _mesa_EnableClientState( GL_VERTEX_ARRAY );
 995    _mesa_VertexPointer( vcomps, GL_FLOAT, stride,
 996                         (GLubyte *) pointer + voffset );
 997 }
 998
 999
1000 void GLAPIENTRY
1001 _mesa_LockArraysEXT(GLint first, GLsizei count)
1002 {
1003    GET_CURRENT_CONTEXT(ctx);
1004    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1005
1006    if (MESA_VERBOSE & VERBOSE_API)
1007       _mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
1008
1009    if (first < 0) {
1010       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
1011       return;
1012    }
1013    if (count <= 0) {
1014       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
1015       return;
1016    }
1017    if (ctx->Array.LockCount != 0) {
1018       _mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
1019       return;
1020    }
1021
1022    ctx->Array.LockFirst = first;
1023    ctx->Array.LockCount = count;
1024
1025    ctx->NewState |= _NEW_ARRAY;
1026 }
1027
1028
1029 void GLAPIENTRY
1030 _mesa_UnlockArraysEXT( void )
1031 {
1032    GET_CURRENT_CONTEXT(ctx);
1033    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1034
1035    if (MESA_VERBOSE & VERBOSE_API)
1036       _mesa_debug(ctx, "glUnlockArrays\n");
1037
1038    if (ctx->Array.LockCount == 0) {
1039       _mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
1040       return;
1041    }
1042
1043    ctx->Array.LockFirst = 0;
1044    ctx->Array.LockCount = 0;
1045    ctx->NewState |= _NEW_ARRAY;
1046 }
1047
1048
1049 /* GL_EXT_multi_draw_arrays */
1050 void GLAPIENTRY
1051 _mesa_MultiDrawArraysEXT( GLenum mode, const GLint *first,
1052                           const GLsizei *count, GLsizei primcount )
1053 {
1054    GET_CURRENT_CONTEXT(ctx);
1055    GLint i;
1056
1057    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1058
1059    for (i = 0; i < primcount; i++) {
1060       if (count[i] > 0) {
1061          CALL_DrawArrays(ctx->Exec, (mode, first[i], count[i]));
1062       }
1063    }
1064 }
1065
1066
1067 /* GL_IBM_multimode_draw_arrays */
1068 void GLAPIENTRY
1069 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
1070                               const GLsizei * count,
1071                               GLsizei primcount, GLint modestride )
1072 {
1073    GET_CURRENT_CONTEXT(ctx);
1074    GLint i;
1075
1076    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1077
1078    for ( i = 0 ; i < primcount ; i++ ) {
1079       if ( count[i] > 0 ) {
1080          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1081          CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
1082       }
1083    }
1084 }
1085
1086
1087 /* GL_IBM_multimode_draw_arrays */
1088 void GLAPIENTRY
1089 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
1090                                 GLenum type, const GLvoid * const * indices,
1091                                 GLsizei primcount, GLint modestride )
1092 {
1093    GET_CURRENT_CONTEXT(ctx);
1094    GLint i;
1095
1096    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1097
1098    /* XXX not sure about ARB_vertex_buffer_object handling here */
1099
1100    for ( i = 0 ; i < primcount ; i++ ) {
1101       if ( count[i] > 0 ) {
1102          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1103          CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
1104       }
1105    }
1106 }
1107
1108
1109 /**
1110  * GL_NV_primitive_restart and GL 3.1
1111  */
1112 void GLAPIENTRY
1113 _mesa_PrimitiveRestartIndex(GLuint index)
1114 {
1115    GET_CURRENT_CONTEXT(ctx);
1116
1117    if (!ctx->Extensions.NV_primitive_restart && ctx->Version < 31) {
1118       _mesa_error(ctx, GL_INVALID_OPERATION, "glPrimitiveRestartIndexNV()");
1119       return;
1120    }
1121
1122    ASSERT_OUTSIDE_BEGIN_END(ctx);
1123
1124    if (ctx->Array.RestartIndex != index) {
1125       FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
1126       ctx->Array.RestartIndex = index;
1127    }
1128 }
1129
1130
1131 /**
1132  * See GL_ARB_instanced_arrays.
1133  * Note that the instance divisor only applies to generic arrays, not
1134  * the legacy vertex arrays.
1135  */
1136 void GLAPIENTRY
1137 _mesa_VertexAttribDivisor(GLuint index, GLuint divisor)
1138 {
1139    struct gl_client_array *array;
1140    GET_CURRENT_CONTEXT(ctx);
1141    ASSERT_OUTSIDE_BEGIN_END(ctx);
1142
1143    if (!ctx->Extensions.ARB_instanced_arrays) {
1144       _mesa_error(ctx, GL_INVALID_OPERATION, "glVertexAttribDivisor()");
1145       return;
1146    }
1147
1148    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
1149       _mesa_error(ctx, GL_INVALID_ENUM, "glVertexAttribDivisor(index = %u)",
1150                   index);
1151       return;
1152    }
1153
1154    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
1155
1156    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
1157    if (array->InstanceDivisor != divisor) {
1158       FLUSH_VERTICES(ctx, _NEW_ARRAY);
1159       array->InstanceDivisor = divisor;
1160       ctx->Array.ArrayObj->NewArrays |= VERT_BIT(VERT_ATTRIB_GENERIC(index));
1161    }
1162 }
1163
1164
1165
1166 /**
1167  * Copy one client vertex array to another.
1168  */
1169 void
1170 _mesa_copy_client_array(struct gl_context *ctx,
1171                         struct gl_client_array *dst,
1172                         struct gl_client_array *src)
1173 {
1174    dst->Size = src->Size;
1175    dst->Type = src->Type;
1176    dst->Format = src->Format;
1177    dst->Stride = src->Stride;
1178    dst->StrideB = src->StrideB;
1179    dst->Ptr = src->Ptr;
1180    dst->Enabled = src->Enabled;
1181    dst->Normalized = src->Normalized;
1182    dst->Integer = src->Integer;
1183    dst->InstanceDivisor = src->InstanceDivisor;
1184    dst->_ElementSize = src->_ElementSize;
1185    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1186    dst->_MaxElement = src->_MaxElement;
1187 }
1188
1189
1190
1191 /**
1192  * Print vertex array's fields.
1193  */
1194 static void
1195 print_array(const char *name, GLint index, const struct gl_client_array *array)
1196 {
1197    if (index >= 0)
1198       printf("  %s[%d]: ", name, index);
1199    else
1200       printf("  %s: ", name);
1201    printf("Ptr=%p, Type=0x%x, Size=%d, ElemSize=%u, Stride=%d, Buffer=%u(Size %lu), MaxElem=%u\n",
1202           array->Ptr, array->Type, array->Size,
1203           array->_ElementSize, array->StrideB,
1204           array->BufferObj->Name, (unsigned long) array->BufferObj->Size,
1205           array->_MaxElement);
1206 }
1207
1208
1209 /**
1210  * Print current vertex object/array info.  For debug.
1211  */
1212 void
1213 _mesa_print_arrays(struct gl_context *ctx)
1214 {
1215    struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
1216    GLuint i;
1217
1218    _mesa_update_array_object_max_element(ctx, arrayObj);
1219
1220    printf("Array Object %u\n", arrayObj->Name);
1221    if (arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled)
1222       print_array("Vertex", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);
1223    if (arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled)
1224       print_array("Normal", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);
1225    if (arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled)
1226       print_array("Color", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);
1227    for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)
1228       if (arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)].Enabled)
1229          print_array("TexCoord", i, &arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)]);
1230    for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++)
1231       if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)].Enabled)
1232          print_array("Attrib", i, &arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)]);
1233    printf("  _MaxElement = %u\n", arrayObj->_MaxElement);
1234 }
1235
1236
1237 /**
1238  * Initialize vertex array state for given context.
1239  */
1240 void
1241 _mesa_init_varray(struct gl_context *ctx)
1242 {
1243    ctx->Array.DefaultArrayObj = ctx->Driver.NewArrayObject(ctx, 0);
1244    _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj,
1245                                 ctx->Array.DefaultArrayObj);
1246    ctx->Array.ActiveTexture = 0;   /* GL_ARB_multitexture */
1247
1248    ctx->Array.Objects = _mesa_NewHashTable();
1249 }
1250
1251
1252 /**
1253  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
1254  */
1255 static void
1256 delete_arrayobj_cb(GLuint id, void *data, void *userData)
1257 {
1258    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
1259    struct gl_context *ctx = (struct gl_context *) userData;
1260    _mesa_delete_array_object(ctx, arrayObj);
1261 }
1262
1263
1264 /**
1265  * Free vertex array state for given context.
1266  */
1267 void
1268 _mesa_free_varray_data(struct gl_context *ctx)
1269 {
1270    _mesa_HashDeleteAll(ctx->Array.Objects, delete_arrayobj_cb, ctx);
1271    _mesa_DeleteHashTable(ctx->Array.Objects);
1272 }