src/mesa/main/state.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.1
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * \file state.c
  28  * State management.
  29  *
  30  * This file manages recalculation of derived values in the __GLcontextRec.
  31  * Also, this is where we initialize the API dispatch table.
  32  */
  33
  34 #include "glheader.h"
  35 #include "accum.h"
  36 #include "api_loopback.h"
  37 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
  38 #include "arbprogram.h"
  39 #endif
  40 #include "attrib.h"
  41 #include "blend.h"
  42 #if FEATURE_ARB_vertex_buffer_object
  43 #include "bufferobj.h"
  44 #endif
  45 #include "buffers.h"
  46 #include "clip.h"
  47 #include "colortab.h"
  48 #include "context.h"
  49 #include "convolve.h"
  50 #include "depth.h"
  51 #include "dlist.h"
  52 #include "drawpix.h"
  53 #include "enable.h"
  54 #include "eval.h"
  55 #include "get.h"
  56 #include "feedback.h"
  57 #include "fog.h"
  58 #include "hint.h"
  59 #include "histogram.h"
  60 #include "imports.h"
  61 #include "light.h"
  62 #include "lines.h"
  63 #include "macros.h"
  64 #include "matrix.h"
  65 #if FEATURE_ARB_occlusion_query
  66 #include "occlude.h"
  67 #endif
  68 #include "pixel.h"
  69 #include "points.h"
  70 #include "polygon.h"
  71 #include "rastpos.h"
  72 #include "state.h"
  73 #include "stencil.h"
  74 #include "teximage.h"
  75 #include "texobj.h"
  76 #include "texstate.h"
  77 #include "mtypes.h"
  78 #include "varray.h"
  79 #if FEATURE_NV_vertex_program
  80 #include "nvprogram.h"
  81 #endif
  82 #if FEATURE_NV_fragment_program
  83 #include "nvfragprog.h"
  84 #include "nvprogram.h"
  85 #include "program.h"
  86 #endif
  87 #include "debug.h"
  88
  89 /* #include "math/m_matrix.h" */
  90 /* #include "math/m_xform.h" */
  91
  92
  93 /**********************************************************************/
  94 /** \name Dispatch table setup */
  95 /*@{*/
  96
  97 /**
  98  * Generic no-op dispatch function.
  99  *
 100  * Used in replacement of the functions which are not part of Mesa subset.
 101  *
 102  * Displays a message.
 103  */
 104 static int
 105 generic_noop(void)
 106 {
 107    _mesa_problem(NULL, "User called no-op dispatch function (not part of Mesa subset?)");
 108    return 0;
 109 }
 110
 111
 112 /**
 113  * Set all pointers in the given dispatch table to point to a
 114  * generic no-op function - generic_noop().
 115  *
 116  * \param table dispatch table.
 117  * \param tableSize dispatch table size.
 118  */
 119 void
 120 _mesa_init_no_op_table(struct _glapi_table *table, GLuint tableSize)
 121 {
 122    typedef void (*func_ptr_t)();
 123    GLuint i;
 124    func_ptr_t *dispatch = (func_ptr_t *) table;
 125    for (i = 0; i < tableSize; i++) {
 126       dispatch[i] = (func_ptr_t)generic_noop;
 127    }
 128 }
 129
 130
 131 /**
 132  * Initialize a dispatch table with pointers to Mesa's immediate-mode
 133  * commands.
 134  *
 135  * Pointers to glBegin()/glEnd() object commands and a few others
 136  * are provided via the GLvertexformat interface.
 137  *
 138  * \param exec dispatch table.
 139  * \param tableSize dispatch table size.
 140  */
 141 void
 142 _mesa_init_exec_table(struct _glapi_table *exec, GLuint tableSize)
 143 {
 144    /* first initialize all dispatch slots to no-op */
 145    _mesa_init_no_op_table(exec, tableSize);
 146
 147 #if _HAVE_FULL_GL
 148    _mesa_loopback_init_api_table( exec );
 149 #endif
 150
 151    /* load the dispatch slots we understand */
 152    exec->AlphaFunc = _mesa_AlphaFunc;
 153    exec->BlendFunc = _mesa_BlendFunc;
 154    exec->Clear = _mesa_Clear;
 155    exec->ClearColor = _mesa_ClearColor;
 156    exec->ClearStencil = _mesa_ClearStencil;
 157    exec->ColorMask = _mesa_ColorMask;
 158    exec->CullFace = _mesa_CullFace;
 159    exec->Disable = _mesa_Disable;
 160    exec->DrawBuffer = _mesa_DrawBuffer;
 161    exec->Enable = _mesa_Enable;
 162    exec->Finish = _mesa_Finish;
 163    exec->Flush = _mesa_Flush;
 164    exec->FrontFace = _mesa_FrontFace;
 165    exec->Frustum = _mesa_Frustum;
 166    exec->GetError = _mesa_GetError;
 167    exec->GetFloatv = _mesa_GetFloatv;
 168    exec->GetString = _mesa_GetString;
 169    exec->InitNames = _mesa_InitNames;
 170    exec->LineStipple = _mesa_LineStipple;
 171    exec->LineWidth = _mesa_LineWidth;
 172    exec->LoadIdentity = _mesa_LoadIdentity;
 173    exec->LoadMatrixf = _mesa_LoadMatrixf;
 174    exec->LoadName = _mesa_LoadName;
 175    exec->LogicOp = _mesa_LogicOp;
 176    exec->MatrixMode = _mesa_MatrixMode;
 177    exec->MultMatrixf = _mesa_MultMatrixf;
 178    exec->Ortho = _mesa_Ortho;
 179    exec->PixelStorei = _mesa_PixelStorei;
 180    exec->PopMatrix = _mesa_PopMatrix;
 181    exec->PopName = _mesa_PopName;
 182    exec->PushMatrix = _mesa_PushMatrix;
 183    exec->PushName = _mesa_PushName;
 184    exec->RasterPos2f = _mesa_RasterPos2f;
 185    exec->RasterPos2fv = _mesa_RasterPos2fv;
 186    exec->RasterPos2i = _mesa_RasterPos2i;
 187    exec->RasterPos2iv = _mesa_RasterPos2iv;
 188    exec->ReadBuffer = _mesa_ReadBuffer;
 189    exec->RenderMode = _mesa_RenderMode;
 190    exec->Rotatef = _mesa_Rotatef;
 191    exec->Scalef = _mesa_Scalef;
 192    exec->Scissor = _mesa_Scissor;
 193    exec->SelectBuffer = _mesa_SelectBuffer;
 194    exec->ShadeModel = _mesa_ShadeModel;
 195    exec->StencilFunc = _mesa_StencilFunc;
 196    exec->StencilMask = _mesa_StencilMask;
 197    exec->StencilOp = _mesa_StencilOp;
 198    exec->TexEnvfv = _mesa_TexEnvfv;
 199    exec->TexEnvi = _mesa_TexEnvi;
 200    exec->TexImage2D = _mesa_TexImage2D;
 201    exec->TexParameteri = _mesa_TexParameteri;
 202    exec->Translatef = _mesa_Translatef;
 203    exec->Viewport = _mesa_Viewport;
 204 #if _HAVE_FULL_GL
 205    exec->Accum = _mesa_Accum;
 206    exec->Bitmap = _mesa_Bitmap;
 207    exec->CallList = _mesa_CallList;
 208    exec->CallLists = _mesa_CallLists;
 209    exec->ClearAccum = _mesa_ClearAccum;
 210    exec->ClearDepth = _mesa_ClearDepth;
 211    exec->ClearIndex = _mesa_ClearIndex;
 212    exec->ClipPlane = _mesa_ClipPlane;
 213    exec->ColorMaterial = _mesa_ColorMaterial;
 214    exec->CopyPixels = _mesa_CopyPixels;
 215    exec->CullParameterfvEXT = _mesa_CullParameterfvEXT;
 216    exec->CullParameterdvEXT = _mesa_CullParameterdvEXT;
 217    exec->DeleteLists = _mesa_DeleteLists;
 218    exec->DepthFunc = _mesa_DepthFunc;
 219    exec->DepthMask = _mesa_DepthMask;
 220    exec->DepthRange = _mesa_DepthRange;
 221    exec->DrawPixels = _mesa_DrawPixels;
 222    exec->EndList = _mesa_EndList;
 223    exec->FeedbackBuffer = _mesa_FeedbackBuffer;
 224    exec->FogCoordPointerEXT = _mesa_FogCoordPointerEXT;
 225    exec->Fogf = _mesa_Fogf;
 226    exec->Fogfv = _mesa_Fogfv;
 227    exec->Fogi = _mesa_Fogi;
 228    exec->Fogiv = _mesa_Fogiv;
 229    exec->GenLists = _mesa_GenLists;
 230    exec->GetClipPlane = _mesa_GetClipPlane;
 231    exec->GetBooleanv = _mesa_GetBooleanv;
 232    exec->GetDoublev = _mesa_GetDoublev;
 233    exec->GetIntegerv = _mesa_GetIntegerv;
 234    exec->GetLightfv = _mesa_GetLightfv;
 235    exec->GetLightiv = _mesa_GetLightiv;
 236    exec->GetMapdv = _mesa_GetMapdv;
 237    exec->GetMapfv = _mesa_GetMapfv;
 238    exec->GetMapiv = _mesa_GetMapiv;
 239    exec->GetMaterialfv = _mesa_GetMaterialfv;
 240    exec->GetMaterialiv = _mesa_GetMaterialiv;
 241    exec->GetPixelMapfv = _mesa_GetPixelMapfv;
 242    exec->GetPixelMapuiv = _mesa_GetPixelMapuiv;
 243    exec->GetPixelMapusv = _mesa_GetPixelMapusv;
 244    exec->GetPolygonStipple = _mesa_GetPolygonStipple;
 245    exec->GetTexEnvfv = _mesa_GetTexEnvfv;
 246    exec->GetTexEnviv = _mesa_GetTexEnviv;
 247    exec->GetTexLevelParameterfv = _mesa_GetTexLevelParameterfv;
 248    exec->GetTexLevelParameteriv = _mesa_GetTexLevelParameteriv;
 249    exec->GetTexParameterfv = _mesa_GetTexParameterfv;
 250    exec->GetTexParameteriv = _mesa_GetTexParameteriv;
 251    exec->GetTexGendv = _mesa_GetTexGendv;
 252    exec->GetTexGenfv = _mesa_GetTexGenfv;
 253    exec->GetTexGeniv = _mesa_GetTexGeniv;
 254    exec->GetTexImage = _mesa_GetTexImage;
 255    exec->Hint = _mesa_Hint;
 256    exec->IndexMask = _mesa_IndexMask;
 257    exec->IsEnabled = _mesa_IsEnabled;
 258    exec->IsList = _mesa_IsList;
 259    exec->LightModelf = _mesa_LightModelf;
 260    exec->LightModelfv = _mesa_LightModelfv;
 261    exec->LightModeli = _mesa_LightModeli;
 262    exec->LightModeliv = _mesa_LightModeliv;
 263    exec->Lightf = _mesa_Lightf;
 264    exec->Lightfv = _mesa_Lightfv;
 265    exec->Lighti = _mesa_Lighti;
 266    exec->Lightiv = _mesa_Lightiv;
 267    exec->ListBase = _mesa_ListBase;
 268    exec->LoadMatrixd = _mesa_LoadMatrixd;
 269    exec->Map1d = _mesa_Map1d;
 270    exec->Map1f = _mesa_Map1f;
 271    exec->Map2d = _mesa_Map2d;
 272    exec->Map2f = _mesa_Map2f;
 273    exec->MapGrid1d = _mesa_MapGrid1d;
 274    exec->MapGrid1f = _mesa_MapGrid1f;
 275    exec->MapGrid2d = _mesa_MapGrid2d;
 276    exec->MapGrid2f = _mesa_MapGrid2f;
 277    exec->MultMatrixd = _mesa_MultMatrixd;
 278    exec->NewList = _mesa_NewList;
 279    exec->PassThrough = _mesa_PassThrough;
 280    exec->PixelMapfv = _mesa_PixelMapfv;
 281    exec->PixelMapuiv = _mesa_PixelMapuiv;
 282    exec->PixelMapusv = _mesa_PixelMapusv;
 283    exec->PixelStoref = _mesa_PixelStoref;
 284    exec->PixelTransferf = _mesa_PixelTransferf;
 285    exec->PixelTransferi = _mesa_PixelTransferi;
 286    exec->PixelZoom = _mesa_PixelZoom;
 287    exec->PointSize = _mesa_PointSize;
 288    exec->PolygonMode = _mesa_PolygonMode;
 289    exec->PolygonOffset = _mesa_PolygonOffset;
 290    exec->PolygonStipple = _mesa_PolygonStipple;
 291    exec->PopAttrib = _mesa_PopAttrib;
 292    exec->PushAttrib = _mesa_PushAttrib;
 293    exec->RasterPos2d = _mesa_RasterPos2d;
 294    exec->RasterPos2dv = _mesa_RasterPos2dv;
 295    exec->RasterPos2s = _mesa_RasterPos2s;
 296    exec->RasterPos2sv = _mesa_RasterPos2sv;
 297    exec->RasterPos3d = _mesa_RasterPos3d;
 298    exec->RasterPos3dv = _mesa_RasterPos3dv;
 299    exec->RasterPos3f = _mesa_RasterPos3f;
 300    exec->RasterPos3fv = _mesa_RasterPos3fv;
 301    exec->RasterPos3i = _mesa_RasterPos3i;
 302    exec->RasterPos3iv = _mesa_RasterPos3iv;
 303    exec->RasterPos3s = _mesa_RasterPos3s;
 304    exec->RasterPos3sv = _mesa_RasterPos3sv;
 305    exec->RasterPos4d = _mesa_RasterPos4d;
 306    exec->RasterPos4dv = _mesa_RasterPos4dv;
 307    exec->RasterPos4f = _mesa_RasterPos4f;
 308    exec->RasterPos4fv = _mesa_RasterPos4fv;
 309    exec->RasterPos4i = _mesa_RasterPos4i;
 310    exec->RasterPos4iv = _mesa_RasterPos4iv;
 311    exec->RasterPos4s = _mesa_RasterPos4s;
 312    exec->RasterPos4sv = _mesa_RasterPos4sv;
 313    exec->ReadPixels = _mesa_ReadPixels;
 314    exec->Rotated = _mesa_Rotated;
 315    exec->Scaled = _mesa_Scaled;
 316    exec->SecondaryColorPointerEXT = _mesa_SecondaryColorPointerEXT;
 317    exec->TexEnvf = _mesa_TexEnvf;
 318    exec->TexEnviv = _mesa_TexEnviv;
 319    exec->TexGend = _mesa_TexGend;
 320    exec->TexGendv = _mesa_TexGendv;
 321    exec->TexGenf = _mesa_TexGenf;
 322    exec->TexGenfv = _mesa_TexGenfv;
 323    exec->TexGeni = _mesa_TexGeni;
 324    exec->TexGeniv = _mesa_TexGeniv;
 325    exec->TexImage1D = _mesa_TexImage1D;
 326    exec->TexParameterf = _mesa_TexParameterf;
 327    exec->TexParameterfv = _mesa_TexParameterfv;
 328    exec->TexParameteriv = _mesa_TexParameteriv;
 329    exec->Translated = _mesa_Translated;
 330 #endif
 331
 332    /* 1.1 */
 333    exec->BindTexture = _mesa_BindTexture;
 334    exec->DeleteTextures = _mesa_DeleteTextures;
 335    exec->GenTextures = _mesa_GenTextures;
 336 #if _HAVE_FULL_GL
 337    exec->AreTexturesResident = _mesa_AreTexturesResident;
 338    exec->AreTexturesResidentEXT = _mesa_AreTexturesResident;
 339    exec->ColorPointer = _mesa_ColorPointer;
 340    exec->CopyTexImage1D = _mesa_CopyTexImage1D;
 341    exec->CopyTexImage2D = _mesa_CopyTexImage2D;
 342    exec->CopyTexSubImage1D = _mesa_CopyTexSubImage1D;
 343    exec->CopyTexSubImage2D = _mesa_CopyTexSubImage2D;
 344    exec->DisableClientState = _mesa_DisableClientState;
 345    exec->EdgeFlagPointer = _mesa_EdgeFlagPointer;
 346    exec->EnableClientState = _mesa_EnableClientState;
 347    exec->GenTexturesEXT = _mesa_GenTextures;
 348    exec->GetPointerv = _mesa_GetPointerv;
 349    exec->IndexPointer = _mesa_IndexPointer;
 350    exec->InterleavedArrays = _mesa_InterleavedArrays;
 351    exec->IsTexture = _mesa_IsTexture;
 352    exec->IsTextureEXT = _mesa_IsTexture;
 353    exec->NormalPointer = _mesa_NormalPointer;
 354    exec->PopClientAttrib = _mesa_PopClientAttrib;
 355    exec->PrioritizeTextures = _mesa_PrioritizeTextures;
 356    exec->PushClientAttrib = _mesa_PushClientAttrib;
 357    exec->TexCoordPointer = _mesa_TexCoordPointer;
 358    exec->TexSubImage1D = _mesa_TexSubImage1D;
 359    exec->TexSubImage2D = _mesa_TexSubImage2D;
 360    exec->VertexPointer = _mesa_VertexPointer;
 361 #endif
 362
 363    /* 1.2 */
 364 #if _HAVE_FULL_GL
 365    exec->CopyTexSubImage3D = _mesa_CopyTexSubImage3D;
 366    exec->TexImage3D = _mesa_TexImage3D;
 367    exec->TexSubImage3D = _mesa_TexSubImage3D;
 368 #endif
 369
 370    /* OpenGL 1.2  GL_ARB_imaging */
 371 #if _HAVE_FULL_GL
 372    exec->BlendColor = _mesa_BlendColor;
 373    exec->BlendEquation = _mesa_BlendEquation;
 374    exec->BlendEquationSeparateEXT = _mesa_BlendEquationSeparateEXT;
 375    exec->ColorSubTable = _mesa_ColorSubTable;
 376    exec->ColorTable = _mesa_ColorTable;
 377    exec->ColorTableParameterfv = _mesa_ColorTableParameterfv;
 378    exec->ColorTableParameteriv = _mesa_ColorTableParameteriv;
 379    exec->ConvolutionFilter1D = _mesa_ConvolutionFilter1D;
 380    exec->ConvolutionFilter2D = _mesa_ConvolutionFilter2D;
 381    exec->ConvolutionParameterf = _mesa_ConvolutionParameterf;
 382    exec->ConvolutionParameterfv = _mesa_ConvolutionParameterfv;
 383    exec->ConvolutionParameteri = _mesa_ConvolutionParameteri;
 384    exec->ConvolutionParameteriv = _mesa_ConvolutionParameteriv;
 385    exec->CopyColorSubTable = _mesa_CopyColorSubTable;
 386    exec->CopyColorTable = _mesa_CopyColorTable;
 387    exec->CopyConvolutionFilter1D = _mesa_CopyConvolutionFilter1D;
 388    exec->CopyConvolutionFilter2D = _mesa_CopyConvolutionFilter2D;
 389    exec->GetColorTable = _mesa_GetColorTable;
 390    exec->GetColorTableEXT = _mesa_GetColorTable;
 391    exec->GetColorTableParameterfv = _mesa_GetColorTableParameterfv;
 392    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 393    exec->GetColorTableParameteriv = _mesa_GetColorTableParameteriv;
 394    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 395    exec->GetConvolutionFilter = _mesa_GetConvolutionFilter;
 396    exec->GetConvolutionFilterEXT = _mesa_GetConvolutionFilter;
 397    exec->GetConvolutionParameterfv = _mesa_GetConvolutionParameterfv;
 398    exec->GetConvolutionParameterfvEXT = _mesa_GetConvolutionParameterfv;
 399    exec->GetConvolutionParameteriv = _mesa_GetConvolutionParameteriv;
 400    exec->GetConvolutionParameterivEXT = _mesa_GetConvolutionParameteriv;
 401    exec->GetHistogram = _mesa_GetHistogram;
 402    exec->GetHistogramEXT = _mesa_GetHistogram;
 403    exec->GetHistogramParameterfv = _mesa_GetHistogramParameterfv;
 404    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 405    exec->GetHistogramParameteriv = _mesa_GetHistogramParameteriv;
 406    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 407    exec->GetMinmax = _mesa_GetMinmax;
 408    exec->GetMinmaxEXT = _mesa_GetMinmax;
 409    exec->GetMinmaxParameterfv = _mesa_GetMinmaxParameterfv;
 410    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 411    exec->GetMinmaxParameteriv = _mesa_GetMinmaxParameteriv;
 412    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 413    exec->GetSeparableFilter = _mesa_GetSeparableFilter;
 414    exec->GetSeparableFilterEXT = _mesa_GetSeparableFilter;
 415    exec->Histogram = _mesa_Histogram;
 416    exec->Minmax = _mesa_Minmax;
 417    exec->ResetHistogram = _mesa_ResetHistogram;
 418    exec->ResetMinmax = _mesa_ResetMinmax;
 419    exec->SeparableFilter2D = _mesa_SeparableFilter2D;
 420 #endif
 421
 422    /* 2. GL_EXT_blend_color */
 423 #if 0
 424 /*    exec->BlendColorEXT = _mesa_BlendColorEXT; */
 425 #endif
 426
 427    /* 3. GL_EXT_polygon_offset */
 428 #if _HAVE_FULL_GL
 429    exec->PolygonOffsetEXT = _mesa_PolygonOffsetEXT;
 430 #endif
 431
 432    /* 6. GL_EXT_texture3d */
 433 #if 0
 434 /*    exec->CopyTexSubImage3DEXT = _mesa_CopyTexSubImage3D; */
 435 /*    exec->TexImage3DEXT = _mesa_TexImage3DEXT; */
 436 /*    exec->TexSubImage3DEXT = _mesa_TexSubImage3D; */
 437 #endif
 438
 439    /* 11. GL_EXT_histogram */
 440 #if _HAVE_FULL_GL
 441    exec->GetHistogramEXT = _mesa_GetHistogram;
 442    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 443    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 444    exec->GetMinmaxEXT = _mesa_GetMinmax;
 445    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 446    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 447 #endif
 448
 449    /* ?. GL_SGIX_pixel_texture */
 450 #if _HAVE_FULL_GL
 451    exec->PixelTexGenSGIX = _mesa_PixelTexGenSGIX;
 452 #endif
 453
 454    /* 15. GL_SGIS_pixel_texture */
 455 #if _HAVE_FULL_GL
 456    exec->PixelTexGenParameteriSGIS = _mesa_PixelTexGenParameteriSGIS;
 457    exec->PixelTexGenParameterivSGIS = _mesa_PixelTexGenParameterivSGIS;
 458    exec->PixelTexGenParameterfSGIS = _mesa_PixelTexGenParameterfSGIS;
 459    exec->PixelTexGenParameterfvSGIS = _mesa_PixelTexGenParameterfvSGIS;
 460    exec->GetPixelTexGenParameterivSGIS = _mesa_GetPixelTexGenParameterivSGIS;
 461    exec->GetPixelTexGenParameterfvSGIS = _mesa_GetPixelTexGenParameterfvSGIS;
 462 #endif
 463
 464    /* 30. GL_EXT_vertex_array */
 465 #if _HAVE_FULL_GL
 466    exec->ColorPointerEXT = _mesa_ColorPointerEXT;
 467    exec->EdgeFlagPointerEXT = _mesa_EdgeFlagPointerEXT;
 468    exec->IndexPointerEXT = _mesa_IndexPointerEXT;
 469    exec->NormalPointerEXT = _mesa_NormalPointerEXT;
 470    exec->TexCoordPointerEXT = _mesa_TexCoordPointerEXT;
 471    exec->VertexPointerEXT = _mesa_VertexPointerEXT;
 472 #endif
 473
 474    /* 37. GL_EXT_blend_minmax */
 475 #if 0
 476    exec->BlendEquationEXT = _mesa_BlendEquationEXT;
 477 #endif
 478
 479    /* 54. GL_EXT_point_parameters */
 480 #if _HAVE_FULL_GL
 481    exec->PointParameterfEXT = _mesa_PointParameterfEXT;
 482    exec->PointParameterfvEXT = _mesa_PointParameterfvEXT;
 483 #endif
 484
 485    /* 78. GL_EXT_paletted_texture */
 486 #if 0
 487    exec->ColorTableEXT = _mesa_ColorTableEXT;
 488    exec->ColorSubTableEXT = _mesa_ColorSubTableEXT;
 489 #endif
 490 #if _HAVE_FULL_GL
 491    exec->GetColorTableEXT = _mesa_GetColorTable;
 492    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 493    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 494 #endif
 495
 496    /* 97. GL_EXT_compiled_vertex_array */
 497 #if _HAVE_FULL_GL
 498    exec->LockArraysEXT = _mesa_LockArraysEXT;
 499    exec->UnlockArraysEXT = _mesa_UnlockArraysEXT;
 500 #endif
 501
 502    /* 148. GL_EXT_multi_draw_arrays */
 503 #if _HAVE_FULL_GL
 504    exec->MultiDrawArraysEXT = _mesa_MultiDrawArraysEXT;
 505    exec->MultiDrawElementsEXT = _mesa_MultiDrawElementsEXT;
 506 #endif
 507
 508    /* 173. GL_INGR_blend_func_separate */
 509 #if _HAVE_FULL_GL
 510    exec->BlendFuncSeparateEXT = _mesa_BlendFuncSeparateEXT;
 511 #endif
 512
 513    /* 196. GL_MESA_resize_buffers */
 514 #if _HAVE_FULL_GL
 515    exec->ResizeBuffersMESA = _mesa_ResizeBuffersMESA;
 516 #endif
 517
 518    /* 197. GL_MESA_window_pos */
 519 #if _HAVE_FULL_GL
 520    exec->WindowPos2dMESA = _mesa_WindowPos2dMESA;
 521    exec->WindowPos2dvMESA = _mesa_WindowPos2dvMESA;
 522    exec->WindowPos2fMESA = _mesa_WindowPos2fMESA;
 523    exec->WindowPos2fvMESA = _mesa_WindowPos2fvMESA;
 524    exec->WindowPos2iMESA = _mesa_WindowPos2iMESA;
 525    exec->WindowPos2ivMESA = _mesa_WindowPos2ivMESA;
 526    exec->WindowPos2sMESA = _mesa_WindowPos2sMESA;
 527    exec->WindowPos2svMESA = _mesa_WindowPos2svMESA;
 528    exec->WindowPos3dMESA = _mesa_WindowPos3dMESA;
 529    exec->WindowPos3dvMESA = _mesa_WindowPos3dvMESA;
 530    exec->WindowPos3fMESA = _mesa_WindowPos3fMESA;
 531    exec->WindowPos3fvMESA = _mesa_WindowPos3fvMESA;
 532    exec->WindowPos3iMESA = _mesa_WindowPos3iMESA;
 533    exec->WindowPos3ivMESA = _mesa_WindowPos3ivMESA;
 534    exec->WindowPos3sMESA = _mesa_WindowPos3sMESA;
 535    exec->WindowPos3svMESA = _mesa_WindowPos3svMESA;
 536    exec->WindowPos4dMESA = _mesa_WindowPos4dMESA;
 537    exec->WindowPos4dvMESA = _mesa_WindowPos4dvMESA;
 538    exec->WindowPos4fMESA = _mesa_WindowPos4fMESA;
 539    exec->WindowPos4fvMESA = _mesa_WindowPos4fvMESA;
 540    exec->WindowPos4iMESA = _mesa_WindowPos4iMESA;
 541    exec->WindowPos4ivMESA = _mesa_WindowPos4ivMESA;
 542    exec->WindowPos4sMESA = _mesa_WindowPos4sMESA;
 543    exec->WindowPos4svMESA = _mesa_WindowPos4svMESA;
 544 #endif
 545
 546    /* 200. GL_IBM_multimode_draw_arrays */
 547 #if _HAVE_FULL_GL
 548    exec->MultiModeDrawArraysIBM = _mesa_MultiModeDrawArraysIBM;
 549    exec->MultiModeDrawElementsIBM = _mesa_MultiModeDrawElementsIBM;
 550 #endif
 551
 552    /* 233. GL_NV_vertex_program */
 553 #if FEATURE_NV_vertex_program
 554    exec->BindProgramNV = _mesa_BindProgram;
 555    exec->DeleteProgramsNV = _mesa_DeletePrograms;
 556    exec->ExecuteProgramNV = _mesa_ExecuteProgramNV;
 557    exec->GenProgramsNV = _mesa_GenPrograms;
 558    exec->AreProgramsResidentNV = _mesa_AreProgramsResidentNV;
 559    exec->RequestResidentProgramsNV = _mesa_RequestResidentProgramsNV;
 560    exec->GetProgramParameterfvNV = _mesa_GetProgramParameterfvNV;
 561    exec->GetProgramParameterdvNV = _mesa_GetProgramParameterdvNV;
 562    exec->GetProgramivNV = _mesa_GetProgramivNV;
 563    exec->GetProgramStringNV = _mesa_GetProgramStringNV;
 564    exec->GetTrackMatrixivNV = _mesa_GetTrackMatrixivNV;
 565    exec->GetVertexAttribdvNV = _mesa_GetVertexAttribdvNV;
 566    exec->GetVertexAttribfvNV = _mesa_GetVertexAttribfvNV;
 567    exec->GetVertexAttribivNV = _mesa_GetVertexAttribivNV;
 568    exec->GetVertexAttribPointervNV = _mesa_GetVertexAttribPointervNV;
 569    exec->IsProgramNV = _mesa_IsProgram;
 570    exec->LoadProgramNV = _mesa_LoadProgramNV;
 571    exec->ProgramParameter4dNV = _mesa_ProgramParameter4dNV;
 572    exec->ProgramParameter4dvNV = _mesa_ProgramParameter4dvNV;
 573    exec->ProgramParameter4fNV = _mesa_ProgramParameter4fNV;
 574    exec->ProgramParameter4fvNV = _mesa_ProgramParameter4fvNV;
 575    exec->ProgramParameters4dvNV = _mesa_ProgramParameters4dvNV;
 576    exec->ProgramParameters4fvNV = _mesa_ProgramParameters4fvNV;
 577    exec->TrackMatrixNV = _mesa_TrackMatrixNV;
 578    exec->VertexAttribPointerNV = _mesa_VertexAttribPointerNV;
 579    /* glVertexAttrib*NV functions handled in api_loopback.c */
 580 #endif
 581
 582    /* 282. GL_NV_fragment_program */
 583 #if FEATURE_NV_fragment_program
 584    exec->ProgramNamedParameter4fNV = _mesa_ProgramNamedParameter4fNV;
 585    exec->ProgramNamedParameter4dNV = _mesa_ProgramNamedParameter4dNV;
 586    exec->ProgramNamedParameter4fvNV = _mesa_ProgramNamedParameter4fvNV;
 587    exec->ProgramNamedParameter4dvNV = _mesa_ProgramNamedParameter4dvNV;
 588    exec->GetProgramNamedParameterfvNV = _mesa_GetProgramNamedParameterfvNV;
 589    exec->GetProgramNamedParameterdvNV = _mesa_GetProgramNamedParameterdvNV;
 590    exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
 591    exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
 592    exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
 593    exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
 594    exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
 595    exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
 596 #endif
 597
 598    /* 262. GL_NV_point_sprite */
 599 #if _HAVE_FULL_GL
 600    exec->PointParameteriNV = _mesa_PointParameteriNV;
 601    exec->PointParameterivNV = _mesa_PointParameterivNV;
 602 #endif
 603
 604    /* 268. GL_EXT_stencil_two_side */
 605 #if _HAVE_FULL_GL
 606    exec->ActiveStencilFaceEXT = _mesa_ActiveStencilFaceEXT;
 607 #endif
 608
 609    /* ???. GL_EXT_depth_bounds_test */
 610    exec->DepthBoundsEXT = _mesa_DepthBoundsEXT;
 611
 612    /* ARB 1. GL_ARB_multitexture */
 613 #if _HAVE_FULL_GL
 614    exec->ActiveTextureARB = _mesa_ActiveTextureARB;
 615    exec->ClientActiveTextureARB = _mesa_ClientActiveTextureARB;
 616 #endif
 617
 618    /* ARB 3. GL_ARB_transpose_matrix */
 619 #if _HAVE_FULL_GL
 620    exec->LoadTransposeMatrixdARB = _mesa_LoadTransposeMatrixdARB;
 621    exec->LoadTransposeMatrixfARB = _mesa_LoadTransposeMatrixfARB;
 622    exec->MultTransposeMatrixdARB = _mesa_MultTransposeMatrixdARB;
 623    exec->MultTransposeMatrixfARB = _mesa_MultTransposeMatrixfARB;
 624 #endif
 625
 626    /* ARB 5. GL_ARB_multisample */
 627 #if _HAVE_FULL_GL
 628    exec->SampleCoverageARB = _mesa_SampleCoverageARB;
 629 #endif
 630
 631    /* ARB 12. GL_ARB_texture_compression */
 632 #if _HAVE_FULL_GL
 633    exec->CompressedTexImage3DARB = _mesa_CompressedTexImage3DARB;
 634    exec->CompressedTexImage2DARB = _mesa_CompressedTexImage2DARB;
 635    exec->CompressedTexImage1DARB = _mesa_CompressedTexImage1DARB;
 636    exec->CompressedTexSubImage3DARB = _mesa_CompressedTexSubImage3DARB;
 637    exec->CompressedTexSubImage2DARB = _mesa_CompressedTexSubImage2DARB;
 638    exec->CompressedTexSubImage1DARB = _mesa_CompressedTexSubImage1DARB;
 639    exec->GetCompressedTexImageARB = _mesa_GetCompressedTexImageARB;
 640 #endif
 641
 642    /* ARB 14. GL_ARB_point_parameters */
 643    /* reuse EXT_point_parameters functions */
 644
 645    /* ARB 26. GL_ARB_vertex_program */
 646    /* ARB 27. GL_ARB_fragment_program */
 647 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
 648    /* glVertexAttrib1sARB aliases glVertexAttrib1sNV */
 649    /* glVertexAttrib1fARB aliases glVertexAttrib1fNV */
 650    /* glVertexAttrib1dARB aliases glVertexAttrib1dNV */
 651    /* glVertexAttrib2sARB aliases glVertexAttrib2sNV */
 652    /* glVertexAttrib2fARB aliases glVertexAttrib2fNV */
 653    /* glVertexAttrib2dARB aliases glVertexAttrib2dNV */
 654    /* glVertexAttrib3sARB aliases glVertexAttrib3sNV */
 655    /* glVertexAttrib3fARB aliases glVertexAttrib3fNV */
 656    /* glVertexAttrib3dARB aliases glVertexAttrib3dNV */
 657    /* glVertexAttrib4sARB aliases glVertexAttrib4sNV */
 658    /* glVertexAttrib4fARB aliases glVertexAttrib4fNV */
 659    /* glVertexAttrib4dARB aliases glVertexAttrib4dNV */
 660    /* glVertexAttrib4NubARB aliases glVertexAttrib4NubNV */
 661    /* glVertexAttrib1svARB aliases glVertexAttrib1svNV */
 662    /* glVertexAttrib1fvARB aliases glVertexAttrib1fvNV */
 663    /* glVertexAttrib1dvARB aliases glVertexAttrib1dvNV */
 664    /* glVertexAttrib2svARB aliases glVertexAttrib2svNV */
 665    /* glVertexAttrib2fvARB aliases glVertexAttrib2fvNV */
 666    /* glVertexAttrib2dvARB aliases glVertexAttrib2dvNV */
 667    /* glVertexAttrib3svARB aliases glVertexAttrib3svNV */
 668    /* glVertexAttrib3fvARB aliases glVertexAttrib3fvNV */
 669    /* glVertexAttrib3dvARB aliases glVertexAttrib3dvNV */
 670    /* glVertexAttrib4svARB aliases glVertexAttrib4svNV */
 671    /* glVertexAttrib4fvARB aliases glVertexAttrib4fvNV */
 672    /* glVertexAttrib4dvARB aliases glVertexAttrib4dvNV */
 673    /* glVertexAttrib4NubvARB aliases glVertexAttrib4NubvNV */
 674    /* glVertexAttrib4bvARB handled in api_loopback.c */
 675    /* glVertexAttrib4ivARB handled in api_loopback.c */
 676    /* glVertexAttrib4ubvARB handled in api_loopback.c */
 677    /* glVertexAttrib4usvARB handled in api_loopback.c */
 678    /* glVertexAttrib4uivARB handled in api_loopback.c */
 679    /* glVertexAttrib4NbvARB handled in api_loopback.c */
 680    /* glVertexAttrib4NsvARB handled in api_loopback.c */
 681    /* glVertexAttrib4NivARB handled in api_loopback.c */
 682    /* glVertexAttrib4NusvARB handled in api_loopback.c */
 683    /* glVertexAttrib4NuivARB handled in api_loopback.c */
 684    exec->VertexAttribPointerARB = _mesa_VertexAttribPointerARB;
 685    exec->EnableVertexAttribArrayARB = _mesa_EnableVertexAttribArrayARB;
 686    exec->DisableVertexAttribArrayARB = _mesa_DisableVertexAttribArrayARB;
 687    exec->ProgramStringARB = _mesa_ProgramStringARB;
 688    /* glBindProgramARB aliases glBindProgramNV */
 689    /* glDeleteProgramsARB aliases glDeleteProgramsNV */
 690    /* glGenProgramsARB aliases glGenProgramsNV */
 691    /* glIsProgramARB aliases glIsProgramNV */
 692    /* glGetVertexAttribdvARB aliases glGetVertexAttribdvNV */
 693    /* glGetVertexAttribfvARB aliases glGetVertexAttribfvNV */
 694    /* glGetVertexAttribivARB aliases glGetVertexAttribivNV */
 695    /* glGetVertexAttribPointervARB aliases glGetVertexAttribPointervNV */
 696    exec->ProgramEnvParameter4dARB = _mesa_ProgramEnvParameter4dARB;
 697    exec->ProgramEnvParameter4dvARB = _mesa_ProgramEnvParameter4dvARB;
 698    exec->ProgramEnvParameter4fARB = _mesa_ProgramEnvParameter4fARB;
 699    exec->ProgramEnvParameter4fvARB = _mesa_ProgramEnvParameter4fvARB;
 700    exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
 701    exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
 702    exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
 703    exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
 704    exec->GetProgramEnvParameterdvARB = _mesa_GetProgramEnvParameterdvARB;
 705    exec->GetProgramEnvParameterfvARB = _mesa_GetProgramEnvParameterfvARB;
 706    exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
 707    exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
 708    exec->GetProgramivARB = _mesa_GetProgramivARB;
 709    exec->GetProgramStringARB = _mesa_GetProgramStringARB;
 710 #endif
 711
 712    /* ARB 28. GL_ARB_vertex_buffer_object */
 713 #if FEATURE_ARB_vertex_buffer_object
 714    exec->BindBufferARB = _mesa_BindBufferARB;
 715    exec->BufferDataARB = _mesa_BufferDataARB;
 716    exec->BufferSubDataARB = _mesa_BufferSubDataARB;
 717    exec->DeleteBuffersARB = _mesa_DeleteBuffersARB;
 718    exec->GenBuffersARB = _mesa_GenBuffersARB;
 719    exec->GetBufferParameterivARB = _mesa_GetBufferParameterivARB;
 720    exec->GetBufferPointervARB = _mesa_GetBufferPointervARB;
 721    exec->GetBufferSubDataARB = _mesa_GetBufferSubDataARB;
 722    exec->IsBufferARB = _mesa_IsBufferARB;
 723    exec->MapBufferARB = _mesa_MapBufferARB;
 724    exec->UnmapBufferARB = _mesa_UnmapBufferARB;
 725 #endif
 726
 727 #if FEATURE_ARB_occlusion_query
 728    exec->GenQueriesARB = _mesa_GenQueriesARB;
 729    exec->DeleteQueriesARB = _mesa_DeleteQueriesARB;
 730    exec->IsQueryARB = _mesa_IsQueryARB;
 731    exec->BeginQueryARB = _mesa_BeginQueryARB;
 732    exec->EndQueryARB = _mesa_EndQueryARB;
 733    exec->GetQueryivARB = _mesa_GetQueryivARB;
 734    exec->GetQueryObjectivARB = _mesa_GetQueryObjectivARB;
 735    exec->GetQueryObjectuivARB = _mesa_GetQueryObjectuivARB;
 736 #endif
 737 }
 738
 739 /*@}*/
 740
 741
 742 /**********************************************************************/
 743 /** \name State update logic */
 744 /*@{*/
 745
 746
 747 static void
 748 update_separate_specular( GLcontext *ctx )
 749 {
 750    if (NEED_SECONDARY_COLOR(ctx))
 751       ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
 752    else
 753       ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
 754 }
 755
 756
 757 /**
 758  * Update state dependent on vertex arrays.
 759  */
 760 static void
 761 update_arrays( GLcontext *ctx )
 762 {
 763    GLuint i, min;
 764
 765    /* find min of _MaxElement values for all enabled arrays */
 766
 767    /* 0 */
 768    if (ctx->VertexProgram._Enabled
 769        && ctx->Array.VertexAttrib[VERT_ATTRIB_POS].Enabled) {
 770       min = ctx->Array.VertexAttrib[VERT_ATTRIB_POS]._MaxElement;
 771    }
 772    else if (ctx->Array.Vertex.Enabled) {
 773       min = ctx->Array.Vertex._MaxElement;
 774    }
 775    else {
 776       /* can't draw anything without vertex positions! */
 777       min = 0;
 778    }
 779
 780    /* 1 */
 781    if (ctx->VertexProgram._Enabled
 782        && ctx->Array.VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) {
 783       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_WEIGHT]._MaxElement);
 784    }
 785    /* no conventional vertex weight array */
 786
 787    /* 2 */
 788    if (ctx->VertexProgram._Enabled
 789        && ctx->Array.VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) {
 790       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_NORMAL]._MaxElement);
 791    }
 792    else if (ctx->Array.Normal.Enabled) {
 793       min = MIN2(min, ctx->Array.Normal._MaxElement);
 794    }
 795
 796    /* 3 */
 797    if (ctx->VertexProgram._Enabled
 798        && ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) {
 799       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR0]._MaxElement);
 800    }
 801    else if (ctx->Array.Color.Enabled) {
 802       min = MIN2(min, ctx->Array.Color._MaxElement);
 803    }
 804
 805    /* 4 */
 806    if (ctx->VertexProgram._Enabled
 807        && ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) {
 808       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR1]._MaxElement);
 809    }
 810    else if (ctx->Array.SecondaryColor.Enabled) {
 811       min = MIN2(min, ctx->Array.SecondaryColor._MaxElement);
 812    }
 813
 814    /* 5 */
 815    if (ctx->VertexProgram._Enabled
 816        && ctx->Array.VertexAttrib[VERT_ATTRIB_FOG].Enabled) {
 817       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_FOG]._MaxElement);
 818    }
 819    else if (ctx->Array.FogCoord.Enabled) {
 820       min = MIN2(min, ctx->Array.FogCoord._MaxElement);
 821    }
 822
 823    /* 6 */
 824    if (ctx->VertexProgram._Enabled
 825        && ctx->Array.VertexAttrib[VERT_ATTRIB_SIX].Enabled) {
 826       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_SIX]._MaxElement);
 827    }
 828
 829    /* 7 */
 830    if (ctx->VertexProgram._Enabled
 831        && ctx->Array.VertexAttrib[VERT_ATTRIB_SEVEN].Enabled) {
 832       min = MIN2(min, ctx->Array.VertexAttrib[VERT_ATTRIB_SEVEN]._MaxElement);
 833    }
 834
 835    /* 8..15 */
 836    for (i = VERT_ATTRIB_TEX0; i < VERT_ATTRIB_MAX; i++) {
 837       if (ctx->VertexProgram._Enabled
 838           && ctx->Array.VertexAttrib[i].Enabled) {
 839          min = MIN2(min, ctx->Array.VertexAttrib[i]._MaxElement);
 840       }
 841       else if (i - VERT_ATTRIB_TEX0 < ctx->Const.MaxTextureCoordUnits
 842                && ctx->Array.TexCoord[i - VERT_ATTRIB_TEX0].Enabled) {
 843          min = MIN2(min, ctx->Array.TexCoord[i - VERT_ATTRIB_TEX0]._MaxElement);
 844       }
 845    }
 846
 847    if (ctx->Array.Index.Enabled) {
 848       min = MIN2(min, ctx->Array.Index._MaxElement);
 849    }
 850
 851    if (ctx->Array.EdgeFlag.Enabled) {
 852       min = MIN2(min, ctx->Array.EdgeFlag._MaxElement);
 853    }
 854
 855    /* _MaxElement is one past the last legal array element */
 856    ctx->Array._MaxElement = min;
 857 }
 858
 859
 860 /**
 861  * Update derived vertex/fragment program state.
 862  */
 863 static void
 864 update_program(GLcontext *ctx)
 865 {
 866    /* For now, just set the _Enabled (really enabled) flags.
 867     * In the future we may have to check other state to be sure we really
 868     * have a runable program or shader.
 869     */
 870    ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled
 871       && ctx->VertexProgram.Current->Instructions;
 872    ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled
 873       && ctx->FragmentProgram.Current->Instructions;
 874 }
 875
 876
 877 /*
 878  * If __GLcontextRec::NewState is non-zero then this function \b must be called
 879  * before rendering any primitive.  Basically, function pointers and
 880  * miscellaneous flags are updated to reflect the current state of the state
 881  * machine.
 882  *
 883  * Calls dd_function_table::UpdateState to perform any internal state management
 884  * necessary.
 885  *
 886  * \sa _mesa_update_modelview_project(), _mesa_update_texture(),
 887  * _mesa_update_buffers(), _mesa_update_polygon(), _mesa_update_lighting() and
 888  * _mesa_update_tnl_spaces().
 889  */
 890 void _mesa_update_state( GLcontext *ctx )
 891 {
 892    GLuint new_state = ctx->NewState;
 893
 894    if (MESA_VERBOSE & VERBOSE_STATE)
 895       _mesa_print_state("_mesa_update_state", new_state);
 896
 897    if (new_state & _NEW_PROGRAM)
 898       update_program( ctx );
 899
 900    if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
 901       _mesa_update_modelview_project( ctx, new_state );
 902
 903    if (new_state & (_NEW_PROGRAM|_NEW_TEXTURE|_NEW_TEXTURE_MATRIX))
 904       _mesa_update_texture( ctx, new_state );
 905
 906    if (new_state & (_NEW_SCISSOR|_NEW_BUFFERS))
 907       _mesa_update_buffers( ctx );
 908
 909    if (new_state & _NEW_POLYGON)
 910       _mesa_update_polygon( ctx );
 911
 912    if (new_state & _NEW_LIGHT)
 913       _mesa_update_lighting( ctx );
 914
 915    if (new_state & _IMAGE_NEW_TRANSFER_STATE)
 916       _mesa_update_pixel( ctx, new_state );
 917
 918    if (new_state & _DD_NEW_SEPARATE_SPECULAR)
 919       update_separate_specular( ctx );
 920
 921    if (new_state & (_NEW_ARRAY | _NEW_PROGRAM))
 922       update_arrays( ctx );
 923
 924    /* ctx->_NeedEyeCoords is now up to date.
 925     *
 926     * If the truth value of this variable has changed, update for the
 927     * new lighting space and recompute the positions of lights and the
 928     * normal transform.
 929     *
 930     * If the lighting space hasn't changed, may still need to recompute
 931     * light positions & normal transforms for other reasons.
 932     */
 933    if (new_state & _MESA_NEW_NEED_EYE_COORDS)
 934       _mesa_update_tnl_spaces( ctx, new_state );
 935
 936    /*
 937     * Give the driver a chance to act upon the new_state flags.
 938     * The driver might plug in different span functions, for example.
 939     * Also, this is where the driver can invalidate the state of any
 940     * active modules (such as swrast_setup, swrast, tnl, etc).
 941     *
 942     * Set ctx->NewState to zero to avoid recursion if
 943     * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
 944     */
 945    new_state = ctx->NewState;
 946    ctx->NewState = 0;
 947    ctx->Driver.UpdateState(ctx, new_state);
 948    ctx->Array.NewState = 0;
 949 }
 950
 951 /*@}*/