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    GLbitfield legalTypes = (SHORT_BIT | INT_BIT |
 358                             HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 359                             FIXED_ES_BIT |
 360                             UNSIGNED_INT_2_10_10_10_REV_BIT |
 361                             INT_2_10_10_10_REV_BIT);
 362    GET_CURRENT_CONTEXT(ctx);
 363    const GLuint unit = ctx->Array.ActiveTexture;
 364    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 365
 366    if (ctx->API == API_OPENGLES)
 367       legalTypes |= BYTE_BIT;
 368
 369    update_array(ctx, "glTexCoordPointer", VERT_ATTRIB_TEX(unit),
 370                 legalTypes, 1, 4,
 371                 size, type, stride, GL_FALSE, GL_FALSE,
 372                 ptr);
 373 }
 374
 375
 376 void GLAPIENTRY
 377 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
 378 {
 379    const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
 380    /* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
 381    const GLboolean integer = GL_TRUE;
 382    GET_CURRENT_CONTEXT(ctx);
 383    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 384
 385    update_array(ctx, "glEdgeFlagPointer", VERT_ATTRIB_EDGEFLAG,
 386                 legalTypes, 1, 1,
 387                 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
 388 }
 389
 390
 391 void GLAPIENTRY
 392 _mesa_PointSizePointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 393 {
 394    const GLbitfield legalTypes = (FLOAT_BIT | FIXED_ES_BIT);
 395    GET_CURRENT_CONTEXT(ctx);
 396    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 397
 398    if (ctx->API != API_OPENGLES) {
 399       _mesa_error(ctx, GL_INVALID_OPERATION,
 400                   "glPointSizePointer(ES 1.x only)");
 401       return;
 402    }
 403
 404    update_array(ctx, "glPointSizePointer", VERT_ATTRIB_POINT_SIZE,
 405                 legalTypes, 1, 1,
 406                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 407 }
 408
 409
 410 #if FEATURE_NV_vertex_program
 411 /**
 412  * Set a vertex attribute array.
 413  * Note that these arrays DO alias the conventional GL vertex arrays
 414  * (position, normal, color, fog, texcoord, etc).
 415  * The generic attribute slots at #16 and above are not touched.
 416  */
 417 void GLAPIENTRY
 418 _mesa_VertexAttribPointerNV(GLuint index, GLint size, GLenum type,
 419                             GLsizei stride, const GLvoid *ptr)
 420 {
 421    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT |
 422                                   FLOAT_BIT | DOUBLE_BIT);
 423    GLboolean normalized = GL_FALSE;
 424    GET_CURRENT_CONTEXT(ctx);
 425    ASSERT_OUTSIDE_BEGIN_END(ctx);
 426
 427    if (index >= MAX_NV_VERTEX_PROGRAM_INPUTS) {
 428       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(index)");
 429       return;
 430    }
 431
 432    if (type == GL_UNSIGNED_BYTE && size != 4) {
 433       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(size!=4)");
 434       return;
 435    }
 436
 437    update_array(ctx, "glVertexAttribPointerNV", VERT_ATTRIB_GENERIC(index),
 438                 legalTypes, 1, BGRA_OR_4,
 439                 size, type, stride, normalized, GL_FALSE, ptr);
 440 }
 441 #endif
 442
 443
 444 #if FEATURE_ARB_vertex_program
 445 /**
 446  * Set a generic vertex attribute array.
 447  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 448  * (position, normal, color, fog, texcoord, etc).
 449  */
 450 void GLAPIENTRY
 451 _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
 452                              GLboolean normalized,
 453                              GLsizei stride, const GLvoid *ptr)
 454 {
 455    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 456                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 457                                   INT_BIT | UNSIGNED_INT_BIT |
 458                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 459                                   FIXED_ES_BIT | FIXED_GL_BIT |
 460                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 461                                   INT_2_10_10_10_REV_BIT);
 462    GET_CURRENT_CONTEXT(ctx);
 463    ASSERT_OUTSIDE_BEGIN_END(ctx);
 464
 465    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 466       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(index)");
 467       return;
 468    }
 469
 470    update_array(ctx, "glVertexAttribPointer", VERT_ATTRIB_GENERIC(index),
 471                 legalTypes, 1, BGRA_OR_4,
 472                 size, type, stride, normalized, GL_FALSE, ptr);
 473 }
 474 #endif
 475
 476
 477 /**
 478  * GL_EXT_gpu_shader4 / GL 3.0.
 479  * Set an integer-valued vertex attribute array.
 480  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 481  * (position, normal, color, fog, texcoord, etc).
 482  */
 483 void GLAPIENTRY
 484 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 485                            GLsizei stride, const GLvoid *ptr)
 486 {
 487    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 488                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 489                                   INT_BIT | UNSIGNED_INT_BIT);
 490    const GLboolean normalized = GL_FALSE;
 491    const GLboolean integer = GL_TRUE;
 492    GET_CURRENT_CONTEXT(ctx);
 493    ASSERT_OUTSIDE_BEGIN_END(ctx);
 494
 495    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 496       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribIPointer(index)");
 497       return;
 498    }
 499
 500    update_array(ctx, "glVertexAttribIPointer", VERT_ATTRIB_GENERIC(index),
 501                 legalTypes, 1, 4,
 502                 size, type, stride, normalized, integer, ptr);
 503 }
 504
 505
 506
 507 void GLAPIENTRY
 508 _mesa_EnableVertexAttribArrayARB(GLuint index)
 509 {
 510    struct gl_array_object *arrayObj;
 511    GET_CURRENT_CONTEXT(ctx);
 512    ASSERT_OUTSIDE_BEGIN_END(ctx);
 513
 514    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 515       _mesa_error(ctx, GL_INVALID_VALUE,
 516                   "glEnableVertexAttribArrayARB(index)");
 517       return;
 518    }
 519
 520    arrayObj = ctx->Array.ArrayObj;
 521
 522    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 523
 524    if (!arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 525       /* was disabled, now being enabled */
 526       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 527       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_TRUE;
 528       arrayObj->_Enabled |= VERT_BIT_GENERIC(index);
 529       arrayObj->NewArrays |= VERT_BIT_GENERIC(index);
 530    }
 531 }
 532
 533
 534 void GLAPIENTRY
 535 _mesa_DisableVertexAttribArrayARB(GLuint index)
 536 {
 537    struct gl_array_object *arrayObj;
 538    GET_CURRENT_CONTEXT(ctx);
 539    ASSERT_OUTSIDE_BEGIN_END(ctx);
 540
 541    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 542       _mesa_error(ctx, GL_INVALID_VALUE,
 543                   "glDisableVertexAttribArrayARB(index)");
 544       return;
 545    }
 546
 547    arrayObj = ctx->Array.ArrayObj;
 548
 549    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(arrayObj->VertexAttrib));
 550
 551    if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled) {
 552       /* was enabled, now being disabled */
 553       FLUSH_VERTICES(ctx, _NEW_ARRAY);
 554       arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_FALSE;
 555       arrayObj->_Enabled &= ~VERT_BIT_GENERIC(index);
 556       arrayObj->NewArrays |= VERT_BIT_GENERIC(index);
 557    }
 558 }
 559
 560
 561 /**
 562  * Return info for a vertex attribute array (no alias with legacy
 563  * vertex attributes (pos, normal, color, etc)).  This function does
 564  * not handle the 4-element GL_CURRENT_VERTEX_ATTRIB_ARB query.
 565  */
 566 static GLuint
 567 get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
 568                   const char *caller)
 569 {
 570    const struct gl_client_array *array;
 571
 572    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 573       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)", caller, index);
 574       return 0;
 575    }
 576
 577    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 578
 579    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
 580
 581    switch (pname) {
 582    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 583       return array->Enabled;
 584    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 585       return array->Size;
 586    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 587       return array->Stride;
 588    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 589       return array->Type;
 590    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 591       return array->Normalized;
 592    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 593       return array->BufferObj->Name;
 594    case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
 595       if (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4) {
 596          return array->Integer;
 597       }
 598       goto error;
 599    case GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ARB:
 600       if (ctx->Extensions.ARB_instanced_arrays) {
 601          return array->InstanceDivisor;
 602       }
 603       goto error;
 604    default:
 605       ; /* fall-through */
 606    }
 607
 608 error:
 609    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", caller, pname);
 610    return 0;
 611 }
 612
 613
 614 static const GLfloat *
 615 get_current_attrib(struct gl_context *ctx, GLuint index, const char *function)
 616 {
 617    if (index == 0) {
 618       if (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_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 637 {
 638    GET_CURRENT_CONTEXT(ctx);
 639    ASSERT_OUTSIDE_BEGIN_END(ctx);
 640
 641    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 642       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribfv");
 643       if (v != NULL) {
 644          COPY_4V(params, v);
 645       }
 646    }
 647    else {
 648       params[0] = (GLfloat) get_vertex_array_attrib(ctx, index, pname,
 649                                                     "glGetVertexAttribfv");
 650    }
 651 }
 652
 653
 654 void GLAPIENTRY
 655 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 656 {
 657    GET_CURRENT_CONTEXT(ctx);
 658    ASSERT_OUTSIDE_BEGIN_END(ctx);
 659
 660    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 661       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribdv");
 662       if (v != NULL) {
 663          params[0] = (GLdouble) v[0];
 664          params[1] = (GLdouble) v[1];
 665          params[2] = (GLdouble) v[2];
 666          params[3] = (GLdouble) v[3];
 667       }
 668    }
 669    else {
 670       params[0] = (GLdouble) get_vertex_array_attrib(ctx, index, pname,
 671                                                      "glGetVertexAttribdv");
 672    }
 673 }
 674
 675
 676 void GLAPIENTRY
 677 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 678 {
 679    GET_CURRENT_CONTEXT(ctx);
 680    ASSERT_OUTSIDE_BEGIN_END(ctx);
 681
 682    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 683       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribiv");
 684       if (v != NULL) {
 685          /* XXX should floats in[0,1] be scaled to full int range? */
 686          params[0] = (GLint) v[0];
 687          params[1] = (GLint) v[1];
 688          params[2] = (GLint) v[2];
 689          params[3] = (GLint) v[3];
 690       }
 691    }
 692    else {
 693       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 694                                                   "glGetVertexAttribiv");
 695    }
 696 }
 697
 698
 699 /** GL 3.0 */
 700 void GLAPIENTRY
 701 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params)
 702 {
 703    GET_CURRENT_CONTEXT(ctx);
 704    ASSERT_OUTSIDE_BEGIN_END(ctx);
 705
 706    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 707       const GLfloat *v =
 708          get_current_attrib(ctx, index, "glGetVertexAttribIiv");
 709       if (v != NULL) {
 710          /* XXX we don't have true integer-valued vertex attribs yet */
 711          params[0] = (GLint) v[0];
 712          params[1] = (GLint) v[1];
 713          params[2] = (GLint) v[2];
 714          params[3] = (GLint) v[3];
 715       }
 716    }
 717    else {
 718       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 719                                                   "glGetVertexAttribIiv");
 720    }
 721 }
 722
 723
 724 /** GL 3.0 */
 725 void GLAPIENTRY
 726 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params)
 727 {
 728    GET_CURRENT_CONTEXT(ctx);
 729    ASSERT_OUTSIDE_BEGIN_END(ctx);
 730
 731    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 732       const GLfloat *v =
 733          get_current_attrib(ctx, index, "glGetVertexAttribIuiv");
 734       if (v != NULL) {
 735          /* XXX we don't have true integer-valued vertex attribs yet */
 736          params[0] = (GLuint) v[0];
 737          params[1] = (GLuint) v[1];
 738          params[2] = (GLuint) v[2];
 739          params[3] = (GLuint) v[3];
 740       }
 741    }
 742    else {
 743       params[0] = get_vertex_array_attrib(ctx, index, pname,
 744                                           "glGetVertexAttribIuiv");
 745    }
 746 }
 747
 748
 749 void GLAPIENTRY
 750 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 751 {
 752    GET_CURRENT_CONTEXT(ctx);
 753    ASSERT_OUTSIDE_BEGIN_END(ctx);
 754
 755    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 756       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 757       return;
 758    }
 759
 760    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 761       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 762       return;
 763    }
 764
 765    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 766
 767    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Ptr;
 768 }
 769
 770
 771 void GLAPIENTRY
 772 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 773                        GLsizei count, const GLvoid *ptr)
 774 {
 775    (void) count;
 776    _mesa_VertexPointer(size, type, stride, ptr);
 777 }
 778
 779
 780 void GLAPIENTRY
 781 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 782                        const GLvoid *ptr)
 783 {
 784    (void) count;
 785    _mesa_NormalPointer(type, stride, ptr);
 786 }
 787
 788
 789 void GLAPIENTRY
 790 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 791                       const GLvoid *ptr)
 792 {
 793    (void) count;
 794    _mesa_ColorPointer(size, type, stride, ptr);
 795 }
 796
 797
 798 void GLAPIENTRY
 799 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 800                       const GLvoid *ptr)
 801 {
 802    (void) count;
 803    _mesa_IndexPointer(type, stride, ptr);
 804 }
 805
 806
 807 void GLAPIENTRY
 808 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 809                          GLsizei count, const GLvoid *ptr)
 810 {
 811    (void) count;
 812    _mesa_TexCoordPointer(size, type, stride, ptr);
 813 }
 814
 815
 816 void GLAPIENTRY
 817 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
 818 {
 819    (void) count;
 820    _mesa_EdgeFlagPointer(stride, ptr);
 821 }
 822
 823
 824 void GLAPIENTRY
 825 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
 826 {
 827    GET_CURRENT_CONTEXT(ctx);
 828    GLboolean tflag, cflag, nflag;  /* enable/disable flags */
 829    GLint tcomps, ccomps, vcomps;   /* components per texcoord, color, vertex */
 830    GLenum ctype = 0;               /* color type */
 831    GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
 832    const GLint toffset = 0;        /* always zero */
 833    GLint defstride;                /* default stride */
 834    GLint c, f;
 835
 836    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 837
 838    f = sizeof(GLfloat);
 839    c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
 840
 841    if (stride < 0) {
 842       _mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
 843       return;
 844    }
 845
 846    switch (format) {
 847       case GL_V2F:
 848          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 849          tcomps = 0;  ccomps = 0;  vcomps = 2;
 850          voffset = 0;
 851          defstride = 2*f;
 852          break;
 853       case GL_V3F:
 854          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 855          tcomps = 0;  ccomps = 0;  vcomps = 3;
 856          voffset = 0;
 857          defstride = 3*f;
 858          break;
 859       case GL_C4UB_V2F:
 860          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 861          tcomps = 0;  ccomps = 4;  vcomps = 2;
 862          ctype = GL_UNSIGNED_BYTE;
 863          coffset = 0;
 864          voffset = c;
 865          defstride = c + 2*f;
 866          break;
 867       case GL_C4UB_V3F:
 868          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 869          tcomps = 0;  ccomps = 4;  vcomps = 3;
 870          ctype = GL_UNSIGNED_BYTE;
 871          coffset = 0;
 872          voffset = c;
 873          defstride = c + 3*f;
 874          break;
 875       case GL_C3F_V3F:
 876          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 877          tcomps = 0;  ccomps = 3;  vcomps = 3;
 878          ctype = GL_FLOAT;
 879          coffset = 0;
 880          voffset = 3*f;
 881          defstride = 6*f;
 882          break;
 883       case GL_N3F_V3F:
 884          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 885          tcomps = 0;  ccomps = 0;  vcomps = 3;
 886          noffset = 0;
 887          voffset = 3*f;
 888          defstride = 6*f;
 889          break;
 890       case GL_C4F_N3F_V3F:
 891          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 892          tcomps = 0;  ccomps = 4;  vcomps = 3;
 893          ctype = GL_FLOAT;
 894          coffset = 0;
 895          noffset = 4*f;
 896          voffset = 7*f;
 897          defstride = 10*f;
 898          break;
 899       case GL_T2F_V3F:
 900          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 901          tcomps = 2;  ccomps = 0;  vcomps = 3;
 902          voffset = 2*f;
 903          defstride = 5*f;
 904          break;
 905       case GL_T4F_V4F:
 906          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 907          tcomps = 4;  ccomps = 0;  vcomps = 4;
 908          voffset = 4*f;
 909          defstride = 8*f;
 910          break;
 911       case GL_T2F_C4UB_V3F:
 912          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 913          tcomps = 2;  ccomps = 4;  vcomps = 3;
 914          ctype = GL_UNSIGNED_BYTE;
 915          coffset = 2*f;
 916          voffset = c+2*f;
 917          defstride = c+5*f;
 918          break;
 919       case GL_T2F_C3F_V3F:
 920          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 921          tcomps = 2;  ccomps = 3;  vcomps = 3;
 922          ctype = GL_FLOAT;
 923          coffset = 2*f;
 924          voffset = 5*f;
 925          defstride = 8*f;
 926          break;
 927       case GL_T2F_N3F_V3F:
 928          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 929          tcomps = 2;  ccomps = 0;  vcomps = 3;
 930          noffset = 2*f;
 931          voffset = 5*f;
 932          defstride = 8*f;
 933          break;
 934       case GL_T2F_C4F_N3F_V3F:
 935          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 936          tcomps = 2;  ccomps = 4;  vcomps = 3;
 937          ctype = GL_FLOAT;
 938          coffset = 2*f;
 939          noffset = 6*f;
 940          voffset = 9*f;
 941          defstride = 12*f;
 942          break;
 943       case GL_T4F_C4F_N3F_V4F:
 944          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 945          tcomps = 4;  ccomps = 4;  vcomps = 4;
 946          ctype = GL_FLOAT;
 947          coffset = 4*f;
 948          noffset = 8*f;
 949          voffset = 11*f;
 950          defstride = 15*f;
 951          break;
 952       default:
 953          _mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
 954          return;
 955    }
 956
 957    if (stride==0) {
 958       stride = defstride;
 959    }
 960
 961    _mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
 962    _mesa_DisableClientState( GL_INDEX_ARRAY );
 963    /* XXX also disable secondary color and generic arrays? */
 964
 965    /* Texcoords */
 966    if (tflag) {
 967       _mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
 968       _mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
 969                              (GLubyte *) pointer + toffset );
 970    }
 971    else {
 972       _mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
 973    }
 974
 975    /* Color */
 976    if (cflag) {
 977       _mesa_EnableClientState( GL_COLOR_ARRAY );
 978       _mesa_ColorPointer( ccomps, ctype, stride,
 979                           (GLubyte *) pointer + coffset );
 980    }
 981    else {
 982       _mesa_DisableClientState( GL_COLOR_ARRAY );
 983    }
 984
 985
 986    /* Normals */
 987    if (nflag) {
 988       _mesa_EnableClientState( GL_NORMAL_ARRAY );
 989       _mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
 990    }
 991    else {
 992       _mesa_DisableClientState( GL_NORMAL_ARRAY );
 993    }
 994
 995    /* Vertices */
 996    _mesa_EnableClientState( GL_VERTEX_ARRAY );
 997    _mesa_VertexPointer( vcomps, GL_FLOAT, stride,
 998                         (GLubyte *) pointer + voffset );
 999 }
1000
1001
1002 void GLAPIENTRY
1003 _mesa_LockArraysEXT(GLint first, GLsizei count)
1004 {
1005    GET_CURRENT_CONTEXT(ctx);
1006    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1007
1008    if (MESA_VERBOSE & VERBOSE_API)
1009       _mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
1010
1011    if (first < 0) {
1012       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
1013       return;
1014    }
1015    if (count <= 0) {
1016       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
1017       return;
1018    }
1019    if (ctx->Array.LockCount != 0) {
1020       _mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
1021       return;
1022    }
1023
1024    ctx->Array.LockFirst = first;
1025    ctx->Array.LockCount = count;
1026
1027    ctx->NewState |= _NEW_ARRAY;
1028 }
1029
1030
1031 void GLAPIENTRY
1032 _mesa_UnlockArraysEXT( void )
1033 {
1034    GET_CURRENT_CONTEXT(ctx);
1035    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1036
1037    if (MESA_VERBOSE & VERBOSE_API)
1038       _mesa_debug(ctx, "glUnlockArrays\n");
1039
1040    if (ctx->Array.LockCount == 0) {
1041       _mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
1042       return;
1043    }
1044
1045    ctx->Array.LockFirst = 0;
1046    ctx->Array.LockCount = 0;
1047    ctx->NewState |= _NEW_ARRAY;
1048 }
1049
1050
1051 /* GL_EXT_multi_draw_arrays */
1052 void GLAPIENTRY
1053 _mesa_MultiDrawArraysEXT( GLenum mode, const GLint *first,
1054                           const GLsizei *count, GLsizei primcount )
1055 {
1056    GET_CURRENT_CONTEXT(ctx);
1057    GLint i;
1058
1059    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1060
1061    for (i = 0; i < primcount; i++) {
1062       if (count[i] > 0) {
1063          CALL_DrawArrays(ctx->Exec, (mode, first[i], count[i]));
1064       }
1065    }
1066 }
1067
1068
1069 /* GL_IBM_multimode_draw_arrays */
1070 void GLAPIENTRY
1071 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
1072                               const GLsizei * count,
1073                               GLsizei primcount, GLint modestride )
1074 {
1075    GET_CURRENT_CONTEXT(ctx);
1076    GLint i;
1077
1078    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1079
1080    for ( i = 0 ; i < primcount ; i++ ) {
1081       if ( count[i] > 0 ) {
1082          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1083          CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
1084       }
1085    }
1086 }
1087
1088
1089 /* GL_IBM_multimode_draw_arrays */
1090 void GLAPIENTRY
1091 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
1092                                 GLenum type, const GLvoid * const * indices,
1093                                 GLsizei primcount, GLint modestride )
1094 {
1095    GET_CURRENT_CONTEXT(ctx);
1096    GLint i;
1097
1098    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1099
1100    /* XXX not sure about ARB_vertex_buffer_object handling here */
1101
1102    for ( i = 0 ; i < primcount ; i++ ) {
1103       if ( count[i] > 0 ) {
1104          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1105          CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
1106       }
1107    }
1108 }
1109
1110
1111 /**
1112  * GL_NV_primitive_restart and GL 3.1
1113  */
1114 void GLAPIENTRY
1115 _mesa_PrimitiveRestartIndex(GLuint index)
1116 {
1117    GET_CURRENT_CONTEXT(ctx);
1118
1119    if (!ctx->Extensions.NV_primitive_restart && ctx->Version < 31) {
1120       _mesa_error(ctx, GL_INVALID_OPERATION, "glPrimitiveRestartIndexNV()");
1121       return;
1122    }
1123
1124    ASSERT_OUTSIDE_BEGIN_END(ctx);
1125
1126    if (ctx->Array.RestartIndex != index) {
1127       FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
1128       ctx->Array.RestartIndex = index;
1129    }
1130 }
1131
1132
1133 /**
1134  * See GL_ARB_instanced_arrays.
1135  * Note that the instance divisor only applies to generic arrays, not
1136  * the legacy vertex arrays.
1137  */
1138 void GLAPIENTRY
1139 _mesa_VertexAttribDivisor(GLuint index, GLuint divisor)
1140 {
1141    struct gl_client_array *array;
1142    GET_CURRENT_CONTEXT(ctx);
1143    ASSERT_OUTSIDE_BEGIN_END(ctx);
1144
1145    if (!ctx->Extensions.ARB_instanced_arrays) {
1146       _mesa_error(ctx, GL_INVALID_OPERATION, "glVertexAttribDivisor()");
1147       return;
1148    }
1149
1150    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
1151       _mesa_error(ctx, GL_INVALID_ENUM, "glVertexAttribDivisor(index = %u)",
1152                   index);
1153       return;
1154    }
1155
1156    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
1157
1158    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
1159    if (array->InstanceDivisor != divisor) {
1160       FLUSH_VERTICES(ctx, _NEW_ARRAY);
1161       array->InstanceDivisor = divisor;
1162       ctx->Array.ArrayObj->NewArrays |= VERT_BIT(VERT_ATTRIB_GENERIC(index));
1163    }
1164 }
1165
1166
1167
1168 /**
1169  * Copy one client vertex array to another.
1170  */
1171 void
1172 _mesa_copy_client_array(struct gl_context *ctx,
1173                         struct gl_client_array *dst,
1174                         struct gl_client_array *src)
1175 {
1176    dst->Size = src->Size;
1177    dst->Type = src->Type;
1178    dst->Format = src->Format;
1179    dst->Stride = src->Stride;
1180    dst->StrideB = src->StrideB;
1181    dst->Ptr = src->Ptr;
1182    dst->Enabled = src->Enabled;
1183    dst->Normalized = src->Normalized;
1184    dst->Integer = src->Integer;
1185    dst->InstanceDivisor = src->InstanceDivisor;
1186    dst->_ElementSize = src->_ElementSize;
1187    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1188    dst->_MaxElement = src->_MaxElement;
1189 }
1190
1191
1192
1193 /**
1194  * Print vertex array's fields.
1195  */
1196 static void
1197 print_array(const char *name, GLint index, const struct gl_client_array *array)
1198 {
1199    if (index >= 0)
1200       printf("  %s[%d]: ", name, index);
1201    else
1202       printf("  %s: ", name);
1203    printf("Ptr=%p, Type=0x%x, Size=%d, ElemSize=%u, Stride=%d, Buffer=%u(Size %lu), MaxElem=%u\n",
1204           array->Ptr, array->Type, array->Size,
1205           array->_ElementSize, array->StrideB,
1206           array->BufferObj->Name, (unsigned long) array->BufferObj->Size,
1207           array->_MaxElement);
1208 }
1209
1210
1211 /**
1212  * Print current vertex object/array info.  For debug.
1213  */
1214 void
1215 _mesa_print_arrays(struct gl_context *ctx)
1216 {
1217    struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
1218    GLuint i;
1219
1220    _mesa_update_array_object_max_element(ctx, arrayObj);
1221
1222    printf("Array Object %u\n", arrayObj->Name);
1223    if (arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled)
1224       print_array("Vertex", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);
1225    if (arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled)
1226       print_array("Normal", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);
1227    if (arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled)
1228       print_array("Color", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);
1229    for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)
1230       if (arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)].Enabled)
1231          print_array("TexCoord", i, &arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)]);
1232    for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++)
1233       if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)].Enabled)
1234          print_array("Attrib", i, &arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)]);
1235    printf("  _MaxElement = %u\n", arrayObj->_MaxElement);
1236 }
1237
1238
1239 /**
1240  * Initialize vertex array state for given context.
1241  */
1242 void
1243 _mesa_init_varray(struct gl_context *ctx)
1244 {
1245    ctx->Array.DefaultArrayObj = ctx->Driver.NewArrayObject(ctx, 0);
1246    _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj,
1247                                 ctx->Array.DefaultArrayObj);
1248    ctx->Array.ActiveTexture = 0;   /* GL_ARB_multitexture */
1249
1250    ctx->Array.Objects = _mesa_NewHashTable();
1251 }
1252
1253
1254 /**
1255  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
1256  */
1257 static void
1258 delete_arrayobj_cb(GLuint id, void *data, void *userData)
1259 {
1260    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
1261    struct gl_context *ctx = (struct gl_context *) userData;
1262    _mesa_delete_array_object(ctx, arrayObj);
1263 }
1264
1265
1266 /**
1267  * Free vertex array state for given context.
1268  */
1269 void
1270 _mesa_free_varray_data(struct gl_context *ctx)
1271 {
1272    _mesa_HashDeleteAll(ctx->Array.Objects, delete_arrayobj_cb, ctx);
1273    _mesa_DeleteHashTable(ctx->Array.Objects);
1274 }