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 ctx->API == API_OPENGL ? 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 (ctx->API != API_OPENGLES && ctx->API != API_OPENGLES2) {
 137       /* fixed point arrays / data is only allowed with OpenGL ES 1.x/2.0 */
 138       legalTypesMask &= ~FIXED_ES_BIT;
 139    }
 140    if (!ctx->Extensions.ARB_ES2_compatibility) {
 141       legalTypesMask &= ~FIXED_GL_BIT;
 142    }
 143    if (!ctx->Extensions.ARB_vertex_type_2_10_10_10_rev) {
 144       legalTypesMask &= ~(UNSIGNED_INT_2_10_10_10_REV_BIT |
 145                           INT_2_10_10_10_REV_BIT);
 146    }
 147
 148    typeBit = type_to_bit(ctx, type);
 149    if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
 150       _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
 151                   func, _mesa_lookup_enum_by_nr(type));
 152       return;
 153    }
 154
 155    /* Do size parameter checking.
 156     * If sizeMax = BGRA_OR_4 it means that size = GL_BGRA is legal and
 157     * must be handled specially.
 158     */
 159    if (ctx->Extensions.EXT_vertex_array_bgra &&
 160        sizeMax == BGRA_OR_4 &&
 161        size == GL_BGRA) {
 162       GLboolean bgra_error = GL_FALSE;
 163
 164       if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev) {
 165          if (type != GL_UNSIGNED_INT_2_10_10_10_REV &&
 166              type != GL_INT_2_10_10_10_REV &&
 167              type != GL_UNSIGNED_BYTE)
 168             bgra_error = GL_TRUE;
 169       } else if (type != GL_UNSIGNED_BYTE)
 170          bgra_error = GL_TRUE;
 171
 172       if (bgra_error) {
 173          _mesa_error(ctx, GL_INVALID_VALUE, "%s(GL_BGRA/GLubyte)", func);
 174          return;
 175       }
 176       format = GL_BGRA;
 177       size = 4;
 178    }
 179    else if (size < sizeMin || size > sizeMax || size > 4) {
 180       _mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
 181       return;
 182    }
 183
 184    if (ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
 185        (type == GL_UNSIGNED_INT_2_10_10_10_REV ||
 186         type == GL_INT_2_10_10_10_REV) && size != 4) {
 187       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(size=%d)", func, size);
 188    }
 189
 190    ASSERT(size <= 4);
 191
 192    if (stride < 0) {
 193       _mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
 194       return;
 195    }
 196
 197    if (ctx->Array.ArrayObj->VBOonly &&
 198        ctx->Array.ArrayBufferObj->Name == 0) {
 199       /* GL_ARB_vertex_array_object requires that all arrays reside in VBOs.
 200        * Generate GL_INVALID_OPERATION if that's not true.
 201        */
 202       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-VBO array)", func);
 203       return;
 204    }
 205
 206    elementSize = _mesa_sizeof_type(type) * size;
 207
 208    array = &ctx->Array.ArrayObj->VertexAttrib[attrib];
 209    array->Size = size;
 210    array->Type = type;
 211    array->Format = format;
 212    array->Stride = stride;
 213    array->StrideB = stride ? stride : elementSize;
 214    array->Normalized = normalized;
 215    array->Integer = integer;
 216    array->Ptr = (const GLubyte *) ptr;
 217    array->_ElementSize = elementSize;
 218
 219    _mesa_reference_buffer_object(ctx, &array->BufferObj,
 220                                  ctx->Array.ArrayBufferObj);
 221
 222    ctx->NewState |= _NEW_ARRAY;
 223    ctx->Array.NewState |= VERT_BIT(attrib);
 224 }
 225
 226
 227 void GLAPIENTRY
 228 _mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 229 {
 230    GLbitfield legalTypes = (SHORT_BIT | INT_BIT | FLOAT_BIT |
 231                             DOUBLE_BIT | HALF_BIT | FIXED_ES_BIT |
 232                             UNSIGNED_INT_2_10_10_10_REV_BIT |
 233                             INT_2_10_10_10_REV_BIT);
 234    GET_CURRENT_CONTEXT(ctx);
 235    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 236
 237    if (ctx->API == API_OPENGLES)
 238       legalTypes |= BYTE_BIT;
 239
 240    update_array(ctx, "glVertexPointer", VERT_ATTRIB_POS,
 241                 legalTypes, 2, 4,
 242                 size, type, stride, GL_FALSE, GL_FALSE, ptr);
 243 }
 244
 245
 246 void GLAPIENTRY
 247 _mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
 248 {
 249    const GLbitfield legalTypes = (BYTE_BIT | SHORT_BIT | INT_BIT |
 250                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 251                                   FIXED_ES_BIT |
 252                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 253                                   INT_2_10_10_10_REV_BIT);
 254    GET_CURRENT_CONTEXT(ctx);
 255    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 256
 257    update_array(ctx, "glNormalPointer", VERT_ATTRIB_NORMAL,
 258                 legalTypes, 3, 3,
 259                 3, type, stride, GL_TRUE, GL_FALSE, ptr);
 260 }
 261
 262
 263 void GLAPIENTRY
 264 _mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
 265 {
 266    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 267                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 268                                   INT_BIT | UNSIGNED_INT_BIT |
 269                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 270                                   FIXED_ES_BIT |
 271                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 272                                   INT_2_10_10_10_REV_BIT);
 273    GET_CURRENT_CONTEXT(ctx);
 274    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 275
 276    update_array(ctx, "glColorPointer", VERT_ATTRIB_COLOR0,
 277                 legalTypes, 3, BGRA_OR_4,
 278                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 279 }
 280
 281
 282 void GLAPIENTRY
 283 _mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr)
 284 {
 285    const GLbitfield legalTypes = (HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
 286    GET_CURRENT_CONTEXT(ctx);
 287    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 288
 289    update_array(ctx, "glFogCoordPointer", VERT_ATTRIB_FOG,
 290                 legalTypes, 1, 1,
 291                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 292 }
 293
 294
 295 void GLAPIENTRY
 296 _mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 297 {
 298    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT | INT_BIT |
 299                                   FLOAT_BIT | DOUBLE_BIT);
 300    GET_CURRENT_CONTEXT(ctx);
 301    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 302
 303    update_array(ctx, "glIndexPointer", VERT_ATTRIB_COLOR_INDEX,
 304                 legalTypes, 1, 1,
 305                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 306 }
 307
 308
 309 void GLAPIENTRY
 310 _mesa_SecondaryColorPointerEXT(GLint size, GLenum type,
 311                                GLsizei stride, const GLvoid *ptr)
 312 {
 313    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 314                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 315                                   INT_BIT | UNSIGNED_INT_BIT |
 316                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 317                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 318                                   INT_2_10_10_10_REV_BIT);
 319    GET_CURRENT_CONTEXT(ctx);
 320    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 321
 322    update_array(ctx, "glSecondaryColorPointer", VERT_ATTRIB_COLOR1,
 323                 legalTypes, 3, BGRA_OR_4,
 324                 size, type, stride, GL_TRUE, GL_FALSE, ptr);
 325 }
 326
 327
 328 void GLAPIENTRY
 329 _mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
 330                       const GLvoid *ptr)
 331 {
 332    GLbitfield legalTypes = (SHORT_BIT | INT_BIT |
 333                             HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 334                             FIXED_ES_BIT |
 335                             UNSIGNED_INT_2_10_10_10_REV_BIT |
 336                             INT_2_10_10_10_REV_BIT);
 337    GET_CURRENT_CONTEXT(ctx);
 338    const GLuint unit = ctx->Array.ActiveTexture;
 339    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 340
 341    if (ctx->API == API_OPENGLES)
 342       legalTypes |= BYTE_BIT;
 343
 344    update_array(ctx, "glTexCoordPointer", VERT_ATTRIB_TEX(unit),
 345                 legalTypes, 1, 4,
 346                 size, type, stride, GL_FALSE, GL_FALSE,
 347                 ptr);
 348 }
 349
 350
 351 void GLAPIENTRY
 352 _mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
 353 {
 354    const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
 355    /* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
 356    const GLboolean integer = GL_TRUE;
 357    GET_CURRENT_CONTEXT(ctx);
 358    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 359
 360    update_array(ctx, "glEdgeFlagPointer", VERT_ATTRIB_EDGEFLAG,
 361                 legalTypes, 1, 1,
 362                 1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
 363 }
 364
 365
 366 void GLAPIENTRY
 367 _mesa_PointSizePointer(GLenum type, GLsizei stride, const GLvoid *ptr)
 368 {
 369    const GLbitfield legalTypes = (FLOAT_BIT | FIXED_ES_BIT);
 370    GET_CURRENT_CONTEXT(ctx);
 371    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 372
 373    if (ctx->API != API_OPENGLES) {
 374       _mesa_error(ctx, GL_INVALID_OPERATION,
 375                   "glPointSizePointer(ES 1.x only)");
 376       return;
 377    }
 378
 379    update_array(ctx, "glPointSizePointer", VERT_ATTRIB_POINT_SIZE,
 380                 legalTypes, 1, 1,
 381                 1, type, stride, GL_FALSE, GL_FALSE, ptr);
 382 }
 383
 384
 385 #if FEATURE_NV_vertex_program
 386 /**
 387  * Set a vertex attribute array.
 388  * Note that these arrays DO alias the conventional GL vertex arrays
 389  * (position, normal, color, fog, texcoord, etc).
 390  * The generic attribute slots at #16 and above are not touched.
 391  */
 392 void GLAPIENTRY
 393 _mesa_VertexAttribPointerNV(GLuint index, GLint size, GLenum type,
 394                             GLsizei stride, const GLvoid *ptr)
 395 {
 396    const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT |
 397                                   FLOAT_BIT | DOUBLE_BIT);
 398    GLboolean normalized = GL_FALSE;
 399    GET_CURRENT_CONTEXT(ctx);
 400    ASSERT_OUTSIDE_BEGIN_END(ctx);
 401
 402    if (index >= MAX_NV_VERTEX_PROGRAM_INPUTS) {
 403       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(index)");
 404       return;
 405    }
 406
 407    if (type == GL_UNSIGNED_BYTE && size != 4) {
 408       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerNV(size!=4)");
 409       return;
 410    }
 411
 412    update_array(ctx, "glVertexAttribPointerNV", VERT_ATTRIB_GENERIC(index),
 413                 legalTypes, 1, BGRA_OR_4,
 414                 size, type, stride, normalized, GL_FALSE, ptr);
 415 }
 416 #endif
 417
 418
 419 #if FEATURE_ARB_vertex_program
 420 /**
 421  * Set a generic vertex attribute array.
 422  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 423  * (position, normal, color, fog, texcoord, etc).
 424  */
 425 void GLAPIENTRY
 426 _mesa_VertexAttribPointerARB(GLuint index, GLint size, GLenum type,
 427                              GLboolean normalized,
 428                              GLsizei stride, const GLvoid *ptr)
 429 {
 430    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 431                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 432                                   INT_BIT | UNSIGNED_INT_BIT |
 433                                   HALF_BIT | FLOAT_BIT | DOUBLE_BIT |
 434                                   FIXED_ES_BIT | FIXED_GL_BIT |
 435                                   UNSIGNED_INT_2_10_10_10_REV_BIT |
 436                                   INT_2_10_10_10_REV_BIT);
 437    GET_CURRENT_CONTEXT(ctx);
 438    ASSERT_OUTSIDE_BEGIN_END(ctx);
 439
 440    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 441       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribPointerARB(index)");
 442       return;
 443    }
 444
 445    update_array(ctx, "glVertexAttribPointer", VERT_ATTRIB_GENERIC(index),
 446                 legalTypes, 1, BGRA_OR_4,
 447                 size, type, stride, normalized, GL_FALSE, ptr);
 448 }
 449 #endif
 450
 451
 452 /**
 453  * GL_EXT_gpu_shader4 / GL 3.0.
 454  * Set an integer-valued vertex attribute array.
 455  * Note that these arrays DO NOT alias the conventional GL vertex arrays
 456  * (position, normal, color, fog, texcoord, etc).
 457  */
 458 void GLAPIENTRY
 459 _mesa_VertexAttribIPointer(GLuint index, GLint size, GLenum type,
 460                            GLsizei stride, const GLvoid *ptr)
 461 {
 462    const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
 463                                   SHORT_BIT | UNSIGNED_SHORT_BIT |
 464                                   INT_BIT | UNSIGNED_INT_BIT);
 465    const GLboolean normalized = GL_FALSE;
 466    const GLboolean integer = GL_TRUE;
 467    GET_CURRENT_CONTEXT(ctx);
 468    ASSERT_OUTSIDE_BEGIN_END(ctx);
 469
 470    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 471       _mesa_error(ctx, GL_INVALID_VALUE, "glVertexAttribIPointer(index)");
 472       return;
 473    }
 474
 475    update_array(ctx, "glVertexAttribIPointer", VERT_ATTRIB_GENERIC(index),
 476                 legalTypes, 1, 4,
 477                 size, type, stride, normalized, integer, ptr);
 478 }
 479
 480
 481
 482 void GLAPIENTRY
 483 _mesa_EnableVertexAttribArrayARB(GLuint index)
 484 {
 485    GET_CURRENT_CONTEXT(ctx);
 486    ASSERT_OUTSIDE_BEGIN_END(ctx);
 487
 488    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 489       _mesa_error(ctx, GL_INVALID_VALUE,
 490                   "glEnableVertexAttribArrayARB(index)");
 491       return;
 492    }
 493
 494    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 495
 496    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 497    ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_TRUE;
 498    ctx->Array.ArrayObj->_Enabled |= VERT_BIT_GENERIC(index);
 499    ctx->Array.NewState |= VERT_BIT_GENERIC(index);
 500 }
 501
 502
 503 void GLAPIENTRY
 504 _mesa_DisableVertexAttribArrayARB(GLuint index)
 505 {
 506    GET_CURRENT_CONTEXT(ctx);
 507    ASSERT_OUTSIDE_BEGIN_END(ctx);
 508
 509    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 510       _mesa_error(ctx, GL_INVALID_VALUE,
 511                   "glDisableVertexAttribArrayARB(index)");
 512       return;
 513    }
 514
 515    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 516
 517    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 518    ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Enabled = GL_FALSE;
 519    ctx->Array.ArrayObj->_Enabled &= ~VERT_BIT_GENERIC(index);
 520    ctx->Array.NewState |= VERT_BIT_GENERIC(index);
 521 }
 522
 523
 524 /**
 525  * Return info for a vertex attribute array (no alias with legacy
 526  * vertex attributes (pos, normal, color, etc)).  This function does
 527  * not handle the 4-element GL_CURRENT_VERTEX_ATTRIB_ARB query.
 528  */
 529 static GLuint
 530 get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
 531                   const char *caller)
 532 {
 533    const struct gl_client_array *array;
 534
 535    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 536       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)", caller, index);
 537       return 0;
 538    }
 539
 540    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 541
 542    array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)];
 543
 544    switch (pname) {
 545    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 546       return array->Enabled;
 547    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 548       return array->Size;
 549    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 550       return array->Stride;
 551    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 552       return array->Type;
 553    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 554       return array->Normalized;
 555    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 556       return array->BufferObj->Name;
 557    case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
 558       if (ctx->Extensions.EXT_gpu_shader4) {
 559          return array->Integer;
 560       }
 561       goto error;
 562    case GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ARB:
 563       if (ctx->Extensions.ARB_instanced_arrays) {
 564          return array->InstanceDivisor;
 565       }
 566       goto error;
 567    default:
 568       ; /* fall-through */
 569    }
 570
 571 error:
 572    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=0x%x)", caller, pname);
 573    return 0;
 574 }
 575
 576
 577 static const GLfloat *
 578 get_current_attrib(struct gl_context *ctx, GLuint index, const char *function)
 579 {
 580    if (index == 0) {
 581       if (ctx->API != API_OPENGLES2) {
 582          _mesa_error(ctx, GL_INVALID_OPERATION, "%s(index==0)", function);
 583          return NULL;
 584       }
 585    }
 586    else if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 587       _mesa_error(ctx, GL_INVALID_VALUE,
 588                   "%s(index>=GL_MAX_VERTEX_ATTRIBS)", function);
 589       return NULL;
 590    }
 591
 592    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 593
 594    FLUSH_CURRENT(ctx, 0);
 595    return ctx->Current.Attrib[VERT_ATTRIB_GENERIC(index)];
 596 }
 597
 598 void GLAPIENTRY
 599 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 600 {
 601    GET_CURRENT_CONTEXT(ctx);
 602    ASSERT_OUTSIDE_BEGIN_END(ctx);
 603
 604    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 605       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribfv");
 606       if (v != NULL) {
 607          COPY_4V(params, v);
 608       }
 609    }
 610    else {
 611       params[0] = (GLfloat) get_vertex_array_attrib(ctx, index, pname,
 612                                                     "glGetVertexAttribfv");
 613    }
 614 }
 615
 616
 617 void GLAPIENTRY
 618 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 619 {
 620    GET_CURRENT_CONTEXT(ctx);
 621    ASSERT_OUTSIDE_BEGIN_END(ctx);
 622
 623    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 624       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribdv");
 625       if (v != NULL) {
 626          params[0] = (GLdouble) v[0];
 627          params[1] = (GLdouble) v[1];
 628          params[2] = (GLdouble) v[2];
 629          params[3] = (GLdouble) v[3];
 630       }
 631    }
 632    else {
 633       params[0] = (GLdouble) get_vertex_array_attrib(ctx, index, pname,
 634                                                      "glGetVertexAttribdv");
 635    }
 636 }
 637
 638
 639 void GLAPIENTRY
 640 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 641 {
 642    GET_CURRENT_CONTEXT(ctx);
 643    ASSERT_OUTSIDE_BEGIN_END(ctx);
 644
 645    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 646       const GLfloat *v = get_current_attrib(ctx, index, "glGetVertexAttribiv");
 647       if (v != NULL) {
 648          /* XXX should floats in[0,1] be scaled to full int range? */
 649          params[0] = (GLint) v[0];
 650          params[1] = (GLint) v[1];
 651          params[2] = (GLint) v[2];
 652          params[3] = (GLint) v[3];
 653       }
 654    }
 655    else {
 656       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 657                                                   "glGetVertexAttribiv");
 658    }
 659 }
 660
 661
 662 /** GL 3.0 */
 663 void GLAPIENTRY
 664 _mesa_GetVertexAttribIiv(GLuint index, GLenum pname, GLint *params)
 665 {
 666    GET_CURRENT_CONTEXT(ctx);
 667    ASSERT_OUTSIDE_BEGIN_END(ctx);
 668
 669    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 670       const GLfloat *v =
 671          get_current_attrib(ctx, index, "glGetVertexAttribIiv");
 672       if (v != NULL) {
 673          /* XXX we don't have true integer-valued vertex attribs yet */
 674          params[0] = (GLint) v[0];
 675          params[1] = (GLint) v[1];
 676          params[2] = (GLint) v[2];
 677          params[3] = (GLint) v[3];
 678       }
 679    }
 680    else {
 681       params[0] = (GLint) get_vertex_array_attrib(ctx, index, pname,
 682                                                   "glGetVertexAttribIiv");
 683    }
 684 }
 685
 686
 687 /** GL 3.0 */
 688 void GLAPIENTRY
 689 _mesa_GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint *params)
 690 {
 691    GET_CURRENT_CONTEXT(ctx);
 692    ASSERT_OUTSIDE_BEGIN_END(ctx);
 693
 694    if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 695       const GLfloat *v =
 696          get_current_attrib(ctx, index, "glGetVertexAttribIuiv");
 697       if (v != NULL) {
 698          /* XXX we don't have true integer-valued vertex attribs yet */
 699          params[0] = (GLuint) v[0];
 700          params[1] = (GLuint) v[1];
 701          params[2] = (GLuint) v[2];
 702          params[3] = (GLuint) v[3];
 703       }
 704    }
 705    else {
 706       params[0] = get_vertex_array_attrib(ctx, index, pname,
 707                                           "glGetVertexAttribIuiv");
 708    }
 709 }
 710
 711
 712 void GLAPIENTRY
 713 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 714 {
 715    GET_CURRENT_CONTEXT(ctx);
 716    ASSERT_OUTSIDE_BEGIN_END(ctx);
 717
 718    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 719       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 720       return;
 721    }
 722
 723    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 724       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 725       return;
 726    }
 727
 728    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
 729
 730    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].Ptr;
 731 }
 732
 733
 734 void GLAPIENTRY
 735 _mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
 736                        GLsizei count, const GLvoid *ptr)
 737 {
 738    (void) count;
 739    _mesa_VertexPointer(size, type, stride, ptr);
 740 }
 741
 742
 743 void GLAPIENTRY
 744 _mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 745                        const GLvoid *ptr)
 746 {
 747    (void) count;
 748    _mesa_NormalPointer(type, stride, ptr);
 749 }
 750
 751
 752 void GLAPIENTRY
 753 _mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 754                       const GLvoid *ptr)
 755 {
 756    (void) count;
 757    _mesa_ColorPointer(size, type, stride, ptr);
 758 }
 759
 760
 761 void GLAPIENTRY
 762 _mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
 763                       const GLvoid *ptr)
 764 {
 765    (void) count;
 766    _mesa_IndexPointer(type, stride, ptr);
 767 }
 768
 769
 770 void GLAPIENTRY
 771 _mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
 772                          GLsizei count, const GLvoid *ptr)
 773 {
 774    (void) count;
 775    _mesa_TexCoordPointer(size, type, stride, ptr);
 776 }
 777
 778
 779 void GLAPIENTRY
 780 _mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
 781 {
 782    (void) count;
 783    _mesa_EdgeFlagPointer(stride, ptr);
 784 }
 785
 786
 787 void GLAPIENTRY
 788 _mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
 789 {
 790    GET_CURRENT_CONTEXT(ctx);
 791    GLboolean tflag, cflag, nflag;  /* enable/disable flags */
 792    GLint tcomps, ccomps, vcomps;   /* components per texcoord, color, vertex */
 793    GLenum ctype = 0;               /* color type */
 794    GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
 795    const GLint toffset = 0;        /* always zero */
 796    GLint defstride;                /* default stride */
 797    GLint c, f;
 798
 799    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 800
 801    f = sizeof(GLfloat);
 802    c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
 803
 804    if (stride < 0) {
 805       _mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
 806       return;
 807    }
 808
 809    switch (format) {
 810       case GL_V2F:
 811          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 812          tcomps = 0;  ccomps = 0;  vcomps = 2;
 813          voffset = 0;
 814          defstride = 2*f;
 815          break;
 816       case GL_V3F:
 817          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 818          tcomps = 0;  ccomps = 0;  vcomps = 3;
 819          voffset = 0;
 820          defstride = 3*f;
 821          break;
 822       case GL_C4UB_V2F:
 823          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 824          tcomps = 0;  ccomps = 4;  vcomps = 2;
 825          ctype = GL_UNSIGNED_BYTE;
 826          coffset = 0;
 827          voffset = c;
 828          defstride = c + 2*f;
 829          break;
 830       case GL_C4UB_V3F:
 831          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 832          tcomps = 0;  ccomps = 4;  vcomps = 3;
 833          ctype = GL_UNSIGNED_BYTE;
 834          coffset = 0;
 835          voffset = c;
 836          defstride = c + 3*f;
 837          break;
 838       case GL_C3F_V3F:
 839          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 840          tcomps = 0;  ccomps = 3;  vcomps = 3;
 841          ctype = GL_FLOAT;
 842          coffset = 0;
 843          voffset = 3*f;
 844          defstride = 6*f;
 845          break;
 846       case GL_N3F_V3F:
 847          tflag = GL_FALSE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 848          tcomps = 0;  ccomps = 0;  vcomps = 3;
 849          noffset = 0;
 850          voffset = 3*f;
 851          defstride = 6*f;
 852          break;
 853       case GL_C4F_N3F_V3F:
 854          tflag = GL_FALSE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 855          tcomps = 0;  ccomps = 4;  vcomps = 3;
 856          ctype = GL_FLOAT;
 857          coffset = 0;
 858          noffset = 4*f;
 859          voffset = 7*f;
 860          defstride = 10*f;
 861          break;
 862       case GL_T2F_V3F:
 863          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 864          tcomps = 2;  ccomps = 0;  vcomps = 3;
 865          voffset = 2*f;
 866          defstride = 5*f;
 867          break;
 868       case GL_T4F_V4F:
 869          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_FALSE;
 870          tcomps = 4;  ccomps = 0;  vcomps = 4;
 871          voffset = 4*f;
 872          defstride = 8*f;
 873          break;
 874       case GL_T2F_C4UB_V3F:
 875          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 876          tcomps = 2;  ccomps = 4;  vcomps = 3;
 877          ctype = GL_UNSIGNED_BYTE;
 878          coffset = 2*f;
 879          voffset = c+2*f;
 880          defstride = c+5*f;
 881          break;
 882       case GL_T2F_C3F_V3F:
 883          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_FALSE;
 884          tcomps = 2;  ccomps = 3;  vcomps = 3;
 885          ctype = GL_FLOAT;
 886          coffset = 2*f;
 887          voffset = 5*f;
 888          defstride = 8*f;
 889          break;
 890       case GL_T2F_N3F_V3F:
 891          tflag = GL_TRUE;  cflag = GL_FALSE;  nflag = GL_TRUE;
 892          tcomps = 2;  ccomps = 0;  vcomps = 3;
 893          noffset = 2*f;
 894          voffset = 5*f;
 895          defstride = 8*f;
 896          break;
 897       case GL_T2F_C4F_N3F_V3F:
 898          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 899          tcomps = 2;  ccomps = 4;  vcomps = 3;
 900          ctype = GL_FLOAT;
 901          coffset = 2*f;
 902          noffset = 6*f;
 903          voffset = 9*f;
 904          defstride = 12*f;
 905          break;
 906       case GL_T4F_C4F_N3F_V4F:
 907          tflag = GL_TRUE;  cflag = GL_TRUE;  nflag = GL_TRUE;
 908          tcomps = 4;  ccomps = 4;  vcomps = 4;
 909          ctype = GL_FLOAT;
 910          coffset = 4*f;
 911          noffset = 8*f;
 912          voffset = 11*f;
 913          defstride = 15*f;
 914          break;
 915       default:
 916          _mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
 917          return;
 918    }
 919
 920    if (stride==0) {
 921       stride = defstride;
 922    }
 923
 924    _mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
 925    _mesa_DisableClientState( GL_INDEX_ARRAY );
 926    /* XXX also disable secondary color and generic arrays? */
 927
 928    /* Texcoords */
 929    if (tflag) {
 930       _mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
 931       _mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
 932                              (GLubyte *) pointer + toffset );
 933    }
 934    else {
 935       _mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
 936    }
 937
 938    /* Color */
 939    if (cflag) {
 940       _mesa_EnableClientState( GL_COLOR_ARRAY );
 941       _mesa_ColorPointer( ccomps, ctype, stride,
 942                           (GLubyte *) pointer + coffset );
 943    }
 944    else {
 945       _mesa_DisableClientState( GL_COLOR_ARRAY );
 946    }
 947
 948
 949    /* Normals */
 950    if (nflag) {
 951       _mesa_EnableClientState( GL_NORMAL_ARRAY );
 952       _mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
 953    }
 954    else {
 955       _mesa_DisableClientState( GL_NORMAL_ARRAY );
 956    }
 957
 958    /* Vertices */
 959    _mesa_EnableClientState( GL_VERTEX_ARRAY );
 960    _mesa_VertexPointer( vcomps, GL_FLOAT, stride,
 961                         (GLubyte *) pointer + voffset );
 962 }
 963
 964
 965 void GLAPIENTRY
 966 _mesa_LockArraysEXT(GLint first, GLsizei count)
 967 {
 968    GET_CURRENT_CONTEXT(ctx);
 969    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 970
 971    if (MESA_VERBOSE & VERBOSE_API)
 972       _mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
 973
 974    if (first < 0) {
 975       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
 976       return;
 977    }
 978    if (count <= 0) {
 979       _mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
 980       return;
 981    }
 982    if (ctx->Array.LockCount != 0) {
 983       _mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
 984       return;
 985    }
 986
 987    ctx->Array.LockFirst = first;
 988    ctx->Array.LockCount = count;
 989
 990    ctx->NewState |= _NEW_ARRAY;
 991    ctx->Array.NewState |= VERT_BIT_ALL;
 992 }
 993
 994
 995 void GLAPIENTRY
 996 _mesa_UnlockArraysEXT( void )
 997 {
 998    GET_CURRENT_CONTEXT(ctx);
 999    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1000
1001    if (MESA_VERBOSE & VERBOSE_API)
1002       _mesa_debug(ctx, "glUnlockArrays\n");
1003
1004    if (ctx->Array.LockCount == 0) {
1005       _mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
1006       return;
1007    }
1008
1009    ctx->Array.LockFirst = 0;
1010    ctx->Array.LockCount = 0;
1011    ctx->NewState |= _NEW_ARRAY;
1012    ctx->Array.NewState |= VERT_BIT_ALL;
1013 }
1014
1015
1016 /* GL_EXT_multi_draw_arrays */
1017 void GLAPIENTRY
1018 _mesa_MultiDrawArraysEXT( GLenum mode, const GLint *first,
1019                           const GLsizei *count, GLsizei primcount )
1020 {
1021    GET_CURRENT_CONTEXT(ctx);
1022    GLint i;
1023
1024    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1025
1026    for (i = 0; i < primcount; i++) {
1027       if (count[i] > 0) {
1028          CALL_DrawArrays(ctx->Exec, (mode, first[i], count[i]));
1029       }
1030    }
1031 }
1032
1033
1034 /* GL_IBM_multimode_draw_arrays */
1035 void GLAPIENTRY
1036 _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
1037                               const GLsizei * count,
1038                               GLsizei primcount, GLint modestride )
1039 {
1040    GET_CURRENT_CONTEXT(ctx);
1041    GLint i;
1042
1043    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1044
1045    for ( i = 0 ; i < primcount ; i++ ) {
1046       if ( count[i] > 0 ) {
1047          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1048          CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
1049       }
1050    }
1051 }
1052
1053
1054 /* GL_IBM_multimode_draw_arrays */
1055 void GLAPIENTRY
1056 _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
1057                                 GLenum type, const GLvoid * const * indices,
1058                                 GLsizei primcount, GLint modestride )
1059 {
1060    GET_CURRENT_CONTEXT(ctx);
1061    GLint i;
1062
1063    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1064
1065    /* XXX not sure about ARB_vertex_buffer_object handling here */
1066
1067    for ( i = 0 ; i < primcount ; i++ ) {
1068       if ( count[i] > 0 ) {
1069          GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
1070          CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
1071       }
1072    }
1073 }
1074
1075
1076 /**
1077  * GL_NV_primitive_restart and GL 3.1
1078  */
1079 void GLAPIENTRY
1080 _mesa_PrimitiveRestartIndex(GLuint index)
1081 {
1082    GET_CURRENT_CONTEXT(ctx);
1083
1084    if (!ctx->Extensions.NV_primitive_restart &&
1085        ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
1086       _mesa_error(ctx, GL_INVALID_OPERATION, "glPrimitiveRestartIndexNV()");
1087       return;
1088    }
1089
1090    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1091
1092    FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
1093
1094    ctx->Array.RestartIndex = index;
1095 }
1096
1097
1098 /**
1099  * See GL_ARB_instanced_arrays.
1100  * Note that the instance divisor only applies to generic arrays, not
1101  * the legacy vertex arrays.
1102  */
1103 void GLAPIENTRY
1104 _mesa_VertexAttribDivisor(GLuint index, GLuint divisor)
1105 {
1106    GET_CURRENT_CONTEXT(ctx);
1107    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1108
1109    if (!ctx->Extensions.ARB_instanced_arrays) {
1110       _mesa_error(ctx, GL_INVALID_OPERATION, "glVertexAttribDivisor()");
1111       return;
1112    }
1113
1114    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
1115       _mesa_error(ctx, GL_INVALID_ENUM, "glVertexAttribDivisor(index = %u)",
1116                   index);
1117       return;
1118    }
1119
1120    ASSERT(VERT_ATTRIB_GENERIC(index) < Elements(ctx->Array.ArrayObj->VertexAttrib));
1121
1122    ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(index)].InstanceDivisor = divisor;
1123 }
1124
1125
1126
1127 /**
1128  * Copy one client vertex array to another.
1129  */
1130 void
1131 _mesa_copy_client_array(struct gl_context *ctx,
1132                         struct gl_client_array *dst,
1133                         struct gl_client_array *src)
1134 {
1135    dst->Size = src->Size;
1136    dst->Type = src->Type;
1137    dst->Format = src->Format;
1138    dst->Stride = src->Stride;
1139    dst->StrideB = src->StrideB;
1140    dst->Ptr = src->Ptr;
1141    dst->Enabled = src->Enabled;
1142    dst->Normalized = src->Normalized;
1143    dst->Integer = src->Integer;
1144    dst->InstanceDivisor = src->InstanceDivisor;
1145    dst->_ElementSize = src->_ElementSize;
1146    _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
1147    dst->_MaxElement = src->_MaxElement;
1148 }
1149
1150
1151
1152 /**
1153  * Print vertex array's fields.
1154  */
1155 static void
1156 print_array(const char *name, GLint index, const struct gl_client_array *array)
1157 {
1158    if (index >= 0)
1159       printf("  %s[%d]: ", name, index);
1160    else
1161       printf("  %s: ", name);
1162    printf("Ptr=%p, Type=0x%x, Size=%d, ElemSize=%u, Stride=%d, Buffer=%u(Size %lu), MaxElem=%u\n",
1163           array->Ptr, array->Type, array->Size,
1164           array->_ElementSize, array->StrideB,
1165           array->BufferObj->Name, (unsigned long) array->BufferObj->Size,
1166           array->_MaxElement);
1167 }
1168
1169
1170 /**
1171  * Print current vertex object/array info.  For debug.
1172  */
1173 void
1174 _mesa_print_arrays(struct gl_context *ctx)
1175 {
1176    struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
1177    GLuint i;
1178
1179    _mesa_update_array_object_max_element(ctx, arrayObj);
1180
1181    printf("Array Object %u\n", arrayObj->Name);
1182    if (arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled)
1183       print_array("Vertex", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);
1184    if (arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled)
1185       print_array("Normal", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);
1186    if (arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled)
1187       print_array("Color", -1, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);
1188    for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)
1189       if (arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)].Enabled)
1190          print_array("TexCoord", i, &arrayObj->VertexAttrib[VERT_ATTRIB_TEX(i)]);
1191    for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++)
1192       if (arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)].Enabled)
1193          print_array("Attrib", i, &arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(i)]);
1194    printf("  _MaxElement = %u\n", arrayObj->_MaxElement);
1195 }
1196
1197
1198 /**
1199  * Initialize vertex array state for given context.
1200  */
1201 void
1202 _mesa_init_varray(struct gl_context *ctx)
1203 {
1204    ctx->Array.DefaultArrayObj = _mesa_new_array_object(ctx, 0);
1205    _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj,
1206                                 ctx->Array.DefaultArrayObj);
1207    ctx->Array.ActiveTexture = 0;   /* GL_ARB_multitexture */
1208
1209    ctx->Array.Objects = _mesa_NewHashTable();
1210 }
1211
1212
1213 /**
1214  * Callback for deleting an array object.  Called by _mesa_HashDeleteAll().
1215  */
1216 static void
1217 delete_arrayobj_cb(GLuint id, void *data, void *userData)
1218 {
1219    struct gl_array_object *arrayObj = (struct gl_array_object *) data;
1220    struct gl_context *ctx = (struct gl_context *) userData;
1221    _mesa_delete_array_object(ctx, arrayObj);
1222 }
1223
1224
1225 /**
1226  * Free vertex array state for given context.
1227  */
1228 void
1229 _mesa_free_varray_data(struct gl_context *ctx)
1230 {
1231    _mesa_HashDeleteAll(ctx->Array.Objects, delete_arrayobj_cb, ctx);
1232    _mesa_DeleteHashTable(ctx->Array.Objects);
1233 }