src/mesa/tnl/t_array_import.c

   1 /* $Id: t_array_import.c,v 1.7 2001/01/24 00:04:59 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  */
  29
  30 #include "glheader.h"
  31 #include "context.h"
  32 #include "macros.h"
  33 #include "mem.h"
  34 #include "mmath.h"
  35 #include "state.h"
  36 #include "mtypes.h"
  37
  38 #include "array_cache/acache.h"
  39 #include "math/m_translate.h"
  40
  41 #include "t_array_import.h"
  42 #include "t_context.h"
  43
  44
  45 static void _tnl_import_vertex( GLcontext *ctx,
  46                            GLboolean writeable,
  47                            GLboolean stride )
  48 {
  49    struct gl_client_array *tmp;
  50    GLboolean is_writeable = 0;
  51    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
  52
  53    tmp = _ac_import_vertex(ctx,
  54                            GL_FLOAT,
  55                            stride ? 4*sizeof(GLfloat) : 0,
  56                            0,
  57                            writeable,
  58                            &is_writeable);
  59
  60    inputs->Obj.data = tmp->Ptr;
  61    inputs->Obj.start = (GLfloat *)tmp->Ptr;
  62    inputs->Obj.stride = tmp->StrideB;
  63    inputs->Obj.size = tmp->Size;
  64    inputs->Obj.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
  65    if (inputs->Obj.stride != 4*sizeof(GLfloat))
  66       inputs->Obj.flags |= VEC_BAD_STRIDE;
  67    if (!is_writeable)
  68       inputs->Obj.flags |= VEC_NOT_WRITEABLE;
  69 }
  70
  71 static void _tnl_import_normal( GLcontext *ctx,
  72                            GLboolean writeable,
  73                            GLboolean stride )
  74 {
  75    struct gl_client_array *tmp;
  76    GLboolean is_writeable = 0;
  77    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
  78
  79    tmp = _ac_import_normal(ctx, GL_FLOAT,
  80                            stride ? 3*sizeof(GLfloat) : 0, writeable,
  81                            &is_writeable);
  82
  83    inputs->Normal.data = tmp->Ptr;
  84    inputs->Normal.start = (GLfloat *)tmp->Ptr;
  85    inputs->Normal.stride = tmp->StrideB;
  86    inputs->Normal.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
  87    if (inputs->Normal.stride != 3*sizeof(GLfloat))
  88       inputs->Normal.flags |= VEC_BAD_STRIDE;
  89    if (!is_writeable)
  90       inputs->Normal.flags |= VEC_NOT_WRITEABLE;
  91 }
  92
  93
  94 static void _tnl_import_color( GLcontext *ctx,
  95                                GLboolean writeable,
  96                                GLboolean stride )
  97 {
  98    struct gl_client_array *tmp;
  99    GLboolean is_writeable = 0;
 100    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 101
 102    tmp = _ac_import_color(ctx,
 103                           GL_UNSIGNED_BYTE,
 104                           stride ? 4*sizeof(GLubyte) : 0,
 105                           4,
 106                           writeable,
 107                           &is_writeable);
 108
 109    inputs->Color.data = tmp->Ptr;
 110    inputs->Color.start = (GLchan *)tmp->Ptr;
 111    inputs->Color.stride = tmp->StrideB;
 112    inputs->Color.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 113    if (inputs->Color.stride != 4*sizeof(GLchan))
 114       inputs->Color.flags |= VEC_BAD_STRIDE;
 115    if (!is_writeable)
 116       inputs->Color.flags |= VEC_NOT_WRITEABLE;
 117 }
 118
 119
 120 static void _tnl_import_secondarycolor( GLcontext *ctx,
 121                                    GLboolean writeable,
 122                                    GLboolean stride )
 123 {
 124    struct gl_client_array *tmp;
 125    GLboolean is_writeable = 0;
 126    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 127
 128    tmp = _ac_import_secondarycolor(ctx, GL_UNSIGNED_BYTE,
 129                                    stride ? 4*sizeof(GLubyte) : 0,
 130                                    4,
 131                                    writeable,
 132                                    &is_writeable);
 133
 134    inputs->SecondaryColor.data = tmp->Ptr;
 135    inputs->SecondaryColor.start = (GLchan *)tmp->Ptr;
 136    inputs->SecondaryColor.stride = tmp->StrideB;
 137    inputs->SecondaryColor.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 138    if (inputs->SecondaryColor.stride != 4*sizeof(GLubyte))
 139       inputs->SecondaryColor.flags |= VEC_BAD_STRIDE;
 140    if (!is_writeable)
 141       inputs->SecondaryColor.flags |= VEC_NOT_WRITEABLE;
 142 }
 143
 144 static void _tnl_import_fogcoord( GLcontext *ctx,
 145                              GLboolean writeable,
 146                              GLboolean stride )
 147 {
 148    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 149     struct gl_client_array *tmp;
 150    GLboolean is_writeable = 0;
 151
 152    tmp = _ac_import_fogcoord(ctx, GL_FLOAT,
 153                              stride ? sizeof(GLfloat) : 0, writeable,
 154                              &is_writeable);
 155
 156    inputs->FogCoord.data = tmp->Ptr;
 157    inputs->FogCoord.start = (GLfloat *)tmp->Ptr;
 158    inputs->FogCoord.stride = tmp->StrideB;
 159    inputs->FogCoord.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 160    if (inputs->FogCoord.stride != sizeof(GLfloat))
 161       inputs->FogCoord.flags |= VEC_BAD_STRIDE;
 162    if (!is_writeable)
 163       inputs->FogCoord.flags |= VEC_NOT_WRITEABLE;
 164 }
 165
 166 static void _tnl_import_index( GLcontext *ctx,
 167                           GLboolean writeable,
 168                           GLboolean stride )
 169 {
 170    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 171    struct gl_client_array *tmp;
 172    GLboolean is_writeable = 0;
 173
 174    tmp = _ac_import_index(ctx, GL_UNSIGNED_INT,
 175                           stride ? sizeof(GLuint) : 0, writeable,
 176                           &is_writeable);
 177
 178    inputs->Index.data = tmp->Ptr;
 179    inputs->Index.start = (GLuint *)tmp->Ptr;
 180    inputs->Index.stride = tmp->StrideB;
 181    inputs->Index.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 182    if (inputs->Index.stride != sizeof(GLuint))
 183       inputs->Index.flags |= VEC_BAD_STRIDE;
 184    if (!is_writeable)
 185       inputs->Index.flags |= VEC_NOT_WRITEABLE;
 186 }
 187
 188
 189 static void _tnl_import_texcoord( GLcontext *ctx,
 190                              GLuint i,
 191                              GLboolean writeable,
 192                              GLboolean stride )
 193 {
 194    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 195    struct gl_client_array *tmp;
 196    GLboolean is_writeable = 0;
 197
 198    tmp = _ac_import_texcoord(ctx, i, GL_FLOAT,
 199                              stride ? 4*sizeof(GLfloat) : 0,
 200                              0,
 201                              writeable,
 202                              &is_writeable);
 203
 204    inputs->TexCoord[i].data = tmp->Ptr;
 205    inputs->TexCoord[i].start = (GLfloat *)tmp->Ptr;
 206    inputs->TexCoord[i].stride = tmp->StrideB;
 207    inputs->TexCoord[i].size = tmp->Size;
 208    inputs->TexCoord[i].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 209    if (inputs->TexCoord[i].stride != 4*sizeof(GLfloat))
 210       inputs->TexCoord[i].flags |= VEC_BAD_STRIDE;
 211    if (!is_writeable)
 212       inputs->TexCoord[i].flags |= VEC_NOT_WRITEABLE;
 213 }
 214
 215
 216 static void _tnl_import_edgeflag( GLcontext *ctx,
 217                              GLboolean writeable,
 218                              GLboolean stride )
 219 {
 220    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 221    struct gl_client_array *tmp;
 222    GLboolean is_writeable = 0;
 223
 224    tmp = _ac_import_edgeflag(ctx, GL_UNSIGNED_BYTE,
 225                              stride ? sizeof(GLubyte) : 0,
 226                              0,
 227                              &is_writeable);
 228
 229    inputs->EdgeFlag.data = tmp->Ptr;
 230    inputs->EdgeFlag.start = (GLubyte *)tmp->Ptr;
 231    inputs->EdgeFlag.stride = tmp->StrideB;
 232    inputs->EdgeFlag.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
 233    if (inputs->EdgeFlag.stride != sizeof(GLubyte))
 234       inputs->EdgeFlag.flags |= VEC_BAD_STRIDE;
 235    if (!is_writeable)
 236       inputs->EdgeFlag.flags |= VEC_NOT_WRITEABLE;
 237 }
 238
 239
 240
 241 /* Callback for VB stages that need to improve the quality of arrays
 242  * bound to the VB.  This is only necessary for client arrays which
 243  * have not been transformed at any point in the pipeline.
 244  */
 245 static void _tnl_upgrade_client_data( GLcontext *ctx,
 246                                       GLuint required,
 247                                       GLuint flags )
 248 {
 249    GLuint i;
 250    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 251    GLboolean writeable = (flags & VEC_NOT_WRITEABLE) != 0;
 252    GLboolean stride = (flags & VEC_BAD_STRIDE) != 0;
 253    struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
 254    (void) inputs;
 255
 256    if ((required & VERT_CLIP) && VB->ClipPtr == VB->ObjPtr)
 257       required |= VERT_OBJ;
 258
 259 /*     _tnl_print_vert_flags("_tnl_upgrade_client_data", required); */
 260
 261    if ((required & VERT_OBJ) && (VB->ObjPtr->flags & flags)) {
 262       ASSERT(VB->ObjPtr == &inputs->Obj);
 263       _tnl_import_vertex( ctx, writeable, stride );
 264       VB->importable_data &= ~(VERT_OBJ|VERT_CLIP);
 265    }
 266
 267    if ((required & VERT_NORM) && (VB->NormalPtr->flags & flags)) {
 268       ASSERT(VB->NormalPtr == &inputs->Normal);
 269       _tnl_import_normal( ctx, writeable, stride );
 270       VB->importable_data &= ~VERT_NORM;
 271    }
 272
 273    if ((required & VERT_RGBA) && (VB->ColorPtr[0]->flags & flags)) {
 274       ASSERT(VB->ColorPtr[0] == &inputs->Color);
 275       _tnl_import_color( ctx, writeable, stride );
 276       VB->importable_data &= ~VERT_RGBA;
 277    }
 278
 279    if ((required & VERT_SPEC_RGB) && (VB->SecondaryColorPtr[0]->flags&flags)) {
 280       ASSERT(VB->SecondaryColorPtr[0] == &inputs->SecondaryColor);
 281       _tnl_import_secondarycolor( ctx, writeable, stride );
 282       VB->importable_data &= ~VERT_SPEC_RGB;
 283    }
 284
 285    if ((required & VERT_FOG_COORD) && (VB->FogCoordPtr->flags & flags)) {
 286       ASSERT(VB->FogCoordPtr == &inputs->FogCoord);
 287       _tnl_import_fogcoord( ctx, writeable, stride );
 288       VB->importable_data &= ~VERT_FOG_COORD;
 289    }
 290
 291    if ((required & VERT_INDEX) && (VB->IndexPtr[0]->flags & flags)) {
 292       ASSERT(VB->IndexPtr[0] == &inputs->Index);
 293       _tnl_import_index( ctx, writeable, stride );
 294       VB->importable_data &= ~VERT_INDEX;
 295    }
 296
 297    if (required & VERT_TEX_ANY)
 298       for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
 299          if ((required & VERT_TEX(i)) && (VB->TexCoordPtr[i]->flags & flags)) {
 300             ASSERT(VB->TexCoordPtr[i] == &inputs->TexCoord[i]);
 301             _tnl_import_texcoord( ctx, i, writeable, stride );
 302             VB->importable_data &= ~VERT_TEX(i);
 303          }
 304
 305 }
 306
 307
 308
 309
 310
 311 void _tnl_vb_bind_arrays( GLcontext *ctx, GLint start, GLsizei count )
 312 {
 313    TNLcontext *tnl = TNL_CONTEXT(ctx);
 314    struct vertex_buffer *VB = &tnl->vb;
 315    GLuint inputs = tnl->pipeline.inputs;
 316    GLuint imports;
 317    struct vertex_arrays *tmp = &tnl->array_inputs;
 318
 319    if (ctx->Array.LockCount) {
 320       ASSERT(start == ctx->Array.LockFirst);
 321       ASSERT(count == ctx->Array.LockCount);
 322    }
 323
 324    imports = tnl->pipeline.inputs;
 325
 326    _ac_import_range( ctx, start, count );
 327
 328    VB->Count = count - start;
 329    VB->FirstClipped = VB->Count;
 330
 331    VB->Elts = 0;
 332    VB->MaterialMask = 0;
 333    VB->Material = 0;
 334    VB->Flag = 0;
 335
 336 /*     _tnl_print_vert_flags("_tnl_vb_bind_arrays: inputs", inputs); */
 337 /*     _tnl_print_vert_flags("_tnl_vb_bind_arrays: imports", imports); */
 338 /*     _tnl_print_vert_flags("_tnl_vb_bind_arrays: _Enabled", ctx->Array._Enabled); */
 339
 340    if (inputs & VERT_OBJ) {
 341       if (imports & VERT_OBJ) {
 342          _tnl_import_vertex( ctx, 0, 0 );
 343          tmp->Obj.count = VB->Count;
 344       }
 345       VB->ObjPtr = &tmp->Obj;
 346    }
 347
 348    if (inputs & VERT_NORM) {
 349       if (imports & VERT_NORM) {
 350          _tnl_import_normal( ctx, 0, 0 );
 351          tmp->Normal.count = VB->Count;
 352       }
 353       VB->NormalPtr = &tmp->Normal;
 354    }
 355
 356    if (inputs & VERT_RGBA) {
 357       if (imports & VERT_RGBA) {
 358          _tnl_import_color( ctx, 0, 0 );
 359          tmp->Color.count = VB->Count;
 360       }
 361       VB->ColorPtr[0] = &tmp->Color;
 362       VB->ColorPtr[1] = 0;
 363    }
 364
 365    if (inputs & VERT_INDEX) {
 366       if (imports & VERT_INDEX) {
 367          _tnl_import_index( ctx, 0, 0 );
 368          tmp->Index.count = VB->Count;
 369       }
 370       VB->IndexPtr[0] = &tmp->Index;
 371       VB->IndexPtr[1] = 0;
 372    }
 373
 374
 375    if (inputs & VERT_FOG_COORD) {
 376       if (imports & VERT_FOG_COORD) {
 377          _tnl_import_fogcoord( ctx, 0, 0 );
 378          tmp->FogCoord.count = VB->Count;
 379       }
 380       VB->FogCoordPtr = &tmp->FogCoord;
 381    }
 382
 383    if (inputs & VERT_EDGE) {
 384       _tnl_import_edgeflag( ctx, GL_TRUE, sizeof(GLboolean) );
 385       VB->EdgeFlag = (GLboolean *) tmp->EdgeFlag.data;
 386    }
 387
 388    if (inputs & VERT_SPEC_RGB) {
 389       if (imports & VERT_SPEC_RGB) {
 390          _tnl_import_secondarycolor( ctx, 0, 0 );
 391          tmp->SecondaryColor.count = VB->Count;
 392       }
 393       VB->SecondaryColorPtr[0] = &tmp->SecondaryColor;
 394       VB->SecondaryColorPtr[1] = 0;
 395    }
 396
 397    if (inputs & VERT_TEX_ANY) {
 398       GLuint i;
 399       for (i = 0; i < ctx->Const.MaxTextureUnits ; i++)
 400          if (inputs & VERT_TEX(i)) {
 401             if (imports & VERT_TEX(i)) {
 402                _tnl_import_texcoord( ctx, i, 0, 0 );
 403                tmp->TexCoord[i].count = VB->Count;
 404             }
 405             VB->TexCoordPtr[i] = &tmp->TexCoord[i];
 406          }
 407    }
 408
 409    VB->Primitive = tnl->tmp_primitive;
 410    VB->PrimitiveLength = tnl->tmp_primitive_length;
 411    VB->import_data = _tnl_upgrade_client_data;
 412    VB->importable_data = imports & VERT_FIXUP;
 413 /*     _tnl_print_vert_flags("_tnl_vb_bind_arrays: importable", VB->importable_data); */
 414
 415 }
 416
 417
 418
 419
 420 /* Function to fill an immediate struct with the effects of
 421  * consecutive calls to ArrayElement with consecutive indices.
 422  */
 423 void _tnl_fill_immediate_drawarrays( GLcontext *ctx, struct immediate *IM,
 424                                      GLuint start, GLuint count )
 425 {
 426    TNLcontext *tnl = TNL_CONTEXT(ctx);
 427    GLuint required = ctx->Array._Enabled;
 428    GLuint n = count - start;
 429    GLuint i;
 430
 431    if (!ctx->CompileFlag)
 432       required &= tnl->pipeline.inputs;
 433
 434    if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
 435       fprintf(stderr, "exec_full_array_elements %d .. %d\n", start, count);
 436
 437    _math_trans_4f( IM->Obj + IM->Start,
 438                    ctx->Array.Vertex.Ptr,
 439                    ctx->Array.Vertex.StrideB,
 440                    ctx->Array.Vertex.Type,
 441                    ctx->Array.Vertex.Size,
 442                    start, n );
 443
 444    if (ctx->Array.Vertex.Size == 4)
 445       required |= VERT_OBJ_234;
 446    else if (ctx->Array.Vertex.Size == 3)
 447       required |= VERT_OBJ_23;
 448
 449
 450    if (required & VERT_NORM) {
 451       _math_trans_3f( IM->Normal + IM->Start,
 452                       ctx->Array.Normal.Ptr,
 453                       ctx->Array.Normal.StrideB,
 454                       ctx->Array.Normal.Type,
 455                       start, n );
 456    }
 457
 458    if (required & VERT_EDGE) {
 459       _math_trans_1ub( IM->EdgeFlag + IM->Start,
 460                        ctx->Array.EdgeFlag.Ptr,
 461                        ctx->Array.EdgeFlag.StrideB,
 462                        ctx->Array.EdgeFlag.Type,
 463                        start, n );
 464    }
 465
 466    if (required & VERT_RGBA) {
 467 #if CHAN_TYPE == GL_UNSIGNED_BYTE
 468       _math_trans_4ub( IM->Color + IM->Start,
 469                        ctx->Array.Color.Ptr,
 470                        ctx->Array.Color.StrideB,
 471                        ctx->Array.Color.Type,
 472                        ctx->Array.Color.Size,
 473                        start, n );
 474 #elif CHAN_TYPE == GL_UNSIGNED_SHORT
 475       _math_trans_4us( IM->Color + IM->Start,
 476                        ctx->Array.Color.Ptr,
 477                        ctx->Array.Color.StrideB,
 478                        ctx->Array.Color.Type,
 479                        ctx->Array.Color.Size,
 480                        start, n );
 481 #elif CHAN_TYPE == GL_FLOAT
 482       _math_trans_4f( IM->Color + IM->Start,
 483                       ctx->Array.Color.Ptr,
 484                       ctx->Array.Color.StrideB,
 485                       ctx->Array.Color.Type,
 486                       ctx->Array.Color.Size,
 487                       start, n );
 488 #endif
 489    }
 490
 491    if (required & VERT_SPEC_RGB) {
 492 #if CHAN_TYPE == GL_UNSIGNED_BYTE
 493       _math_trans_4ub( IM->SecondaryColor + IM->Start,
 494                        ctx->Array.SecondaryColor.Ptr,
 495                        ctx->Array.SecondaryColor.StrideB,
 496                        ctx->Array.SecondaryColor.Type,
 497                        ctx->Array.SecondaryColor.Size,
 498                        start, n );
 499 #elif CHAN_TYPE == GL_UNSIGNED_SHORT
 500       _math_trans_4us( IM->SecondaryColor + IM->Start,
 501                        ctx->Array.SecondaryColor.Ptr,
 502                        ctx->Array.SecondaryColor.StrideB,
 503                        ctx->Array.SecondaryColor.Type,
 504                        ctx->Array.SecondaryColor.Size,
 505                        start, n );
 506 #elif CHAN_TYPE == GL_FLOAT
 507       _math_trans_4f( IM->SecondaryColor + IM->Start,
 508                        ctx->Array.SecondaryColor.Ptr,
 509                        ctx->Array.SecondaryColor.StrideB,
 510                        ctx->Array.SecondaryColor.Type,
 511                        ctx->Array.SecondaryColor.Size,
 512                        start, n );
 513 #endif
 514    }
 515
 516    if (required & VERT_FOG_COORD) {
 517       _math_trans_1f( IM->FogCoord + IM->Start,
 518                       ctx->Array.FogCoord.Ptr,
 519                       ctx->Array.FogCoord.StrideB,
 520                       ctx->Array.FogCoord.Type,
 521                       start, n );
 522    }
 523
 524    if (required & VERT_INDEX) {
 525       _math_trans_1ui( IM->Index + IM->Start,
 526                        ctx->Array.Index.Ptr,
 527                        ctx->Array.Index.StrideB,
 528                        ctx->Array.Index.Type,
 529                        start, n );
 530    }
 531
 532    if (required & VERT_TEX_ANY) {
 533       for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) {
 534          if (required & VERT_TEX(i)) {
 535             _math_trans_4f( IM->TexCoord[i] + IM->Start,
 536                             ctx->Array.TexCoord[i].Ptr,
 537                             ctx->Array.TexCoord[i].StrideB,
 538                             ctx->Array.TexCoord[i].Size,
 539                             ctx->Array.TexCoord[i].Type,
 540                             start, n );
 541
 542             if (ctx->Array.TexCoord[i].Size == 4)
 543                IM->TexSize |= TEX_SIZE_4(i);
 544             else if (ctx->Array.TexCoord[i].Size == 3)
 545                IM->TexSize |= TEX_SIZE_3(i);
 546          }
 547       }
 548    }
 549
 550    IM->Count = IM->Start + n;
 551    IM->Flag[IM->Start] |= required;
 552    for (i = IM->Start+1 ; i < IM->Count ; i++)
 553       IM->Flag[i] = required;
 554 }
 555
 556