src/mesa/main/state.c

   1 /* $Id: state.c,v 1.85 2002/06/15 03:03:09 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  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
  27
  28 /*
  29  * This file manages recalculation of derived values in the
  30  * __GLcontext.
  31  */
  32
  33
  34 #ifdef PC_HEADER
  35 #include "all.h"
  36 #else
  37 #include "glheader.h"
  38 #include "accum.h"
  39 #include "api_loopback.h"
  40 #include "attrib.h"
  41 #include "blend.h"
  42 #include "buffers.h"
  43 #include "clip.h"
  44 #include "colortab.h"
  45 #include "context.h"
  46 #include "convolve.h"
  47 #include "depth.h"
  48 #include "dlist.h"
  49 #include "drawpix.h"
  50 #include "enable.h"
  51 #include "eval.h"
  52 #include "get.h"
  53 #include "feedback.h"
  54 #include "fog.h"
  55 #include "hint.h"
  56 #include "histogram.h"
  57 #include "light.h"
  58 #include "lines.h"
  59 #include "matrix.h"
  60 #include "mmath.h"
  61 #include "pixel.h"
  62 #include "points.h"
  63 #include "polygon.h"
  64 #include "rastpos.h"
  65 #include "state.h"
  66 #include "stencil.h"
  67 #include "teximage.h"
  68 #include "texobj.h"
  69 #include "texstate.h"
  70 #include "mtypes.h"
  71 #include "varray.h"
  72 #include "vpstate.h"
  73
  74 #include "math/m_matrix.h"
  75 #include "math/m_xform.h"
  76 #endif
  77
  78
  79 static int
  80 generic_noop(void)
  81 {
  82 #ifdef DEBUG
  83    _mesa_problem(NULL, "undefined function dispatch");
  84 #endif
  85    return 0;
  86 }
  87
  88
  89 /*
  90  * Set all pointers in the given dispatch table to point to a
  91  * generic no-op function.
  92  */
  93 void
  94 _mesa_init_no_op_table(struct _glapi_table *table, GLuint tableSize)
  95 {
  96    GLuint i;
  97    void **dispatch = (void **) table;
  98    for (i = 0; i < tableSize; i++) {
  99       dispatch[i] = (void *) generic_noop;
 100    }
 101 }
 102
 103
 104
 105 /*
 106  * Initialize the given dispatch table with pointers to Mesa's
 107  * immediate-mode commands.
 108  *
 109  * Pointers to begin/end object commands and a few others
 110  * are provided via the vtxfmt interface elsewhere.
 111  */
 112 void
 113 _mesa_init_exec_table(struct _glapi_table *exec, GLuint tableSize)
 114 {
 115    /* first initialize all dispatch slots to no-op */
 116    _mesa_init_no_op_table(exec, tableSize);
 117
 118    _mesa_loopback_init_api_table( exec, GL_TRUE );
 119
 120    /* load the dispatch slots we understand */
 121    exec->Accum = _mesa_Accum;
 122    exec->AlphaFunc = _mesa_AlphaFunc;
 123    exec->Bitmap = _mesa_Bitmap;
 124    exec->BlendFunc = _mesa_BlendFunc;
 125    exec->CallList = _mesa_CallList;
 126    exec->CallLists = _mesa_CallLists;
 127    exec->Clear = _mesa_Clear;
 128    exec->ClearAccum = _mesa_ClearAccum;
 129    exec->ClearColor = _mesa_ClearColor;
 130    exec->ClearDepth = _mesa_ClearDepth;
 131    exec->ClearIndex = _mesa_ClearIndex;
 132    exec->ClearStencil = _mesa_ClearStencil;
 133    exec->ClipPlane = _mesa_ClipPlane;
 134    exec->ColorMask = _mesa_ColorMask;
 135    exec->ColorMaterial = _mesa_ColorMaterial;
 136    exec->CopyPixels = _mesa_CopyPixels;
 137    exec->CullFace = _mesa_CullFace;
 138    exec->DeleteLists = _mesa_DeleteLists;
 139    exec->DepthFunc = _mesa_DepthFunc;
 140    exec->DepthMask = _mesa_DepthMask;
 141    exec->DepthRange = _mesa_DepthRange;
 142    exec->Disable = _mesa_Disable;
 143    exec->DrawBuffer = _mesa_DrawBuffer;
 144    exec->DrawPixels = _mesa_DrawPixels;
 145    exec->Enable = _mesa_Enable;
 146    exec->EndList = _mesa_EndList;
 147    exec->FeedbackBuffer = _mesa_FeedbackBuffer;
 148    exec->Finish = _mesa_Finish;
 149    exec->Flush = _mesa_Flush;
 150    exec->FogCoordPointerEXT = _mesa_FogCoordPointerEXT;
 151    exec->Fogf = _mesa_Fogf;
 152    exec->Fogfv = _mesa_Fogfv;
 153    exec->Fogi = _mesa_Fogi;
 154    exec->Fogiv = _mesa_Fogiv;
 155    exec->FrontFace = _mesa_FrontFace;
 156    exec->Frustum = _mesa_Frustum;
 157    exec->GenLists = _mesa_GenLists;
 158    exec->GetBooleanv = _mesa_GetBooleanv;
 159    exec->GetClipPlane = _mesa_GetClipPlane;
 160    exec->GetDoublev = _mesa_GetDoublev;
 161    exec->GetError = _mesa_GetError;
 162    exec->GetFloatv = _mesa_GetFloatv;
 163    exec->GetIntegerv = _mesa_GetIntegerv;
 164    exec->GetLightfv = _mesa_GetLightfv;
 165    exec->GetLightiv = _mesa_GetLightiv;
 166    exec->GetMapdv = _mesa_GetMapdv;
 167    exec->GetMapfv = _mesa_GetMapfv;
 168    exec->GetMapiv = _mesa_GetMapiv;
 169    exec->GetMaterialfv = _mesa_GetMaterialfv;
 170    exec->GetMaterialiv = _mesa_GetMaterialiv;
 171    exec->GetPixelMapfv = _mesa_GetPixelMapfv;
 172    exec->GetPixelMapuiv = _mesa_GetPixelMapuiv;
 173    exec->GetPixelMapusv = _mesa_GetPixelMapusv;
 174    exec->GetPolygonStipple = _mesa_GetPolygonStipple;
 175    exec->GetString = _mesa_GetString;
 176    exec->GetTexEnvfv = _mesa_GetTexEnvfv;
 177    exec->GetTexEnviv = _mesa_GetTexEnviv;
 178    exec->GetTexGendv = _mesa_GetTexGendv;
 179    exec->GetTexGenfv = _mesa_GetTexGenfv;
 180    exec->GetTexGeniv = _mesa_GetTexGeniv;
 181    exec->GetTexImage = _mesa_GetTexImage;
 182    exec->GetTexLevelParameterfv = _mesa_GetTexLevelParameterfv;
 183    exec->GetTexLevelParameteriv = _mesa_GetTexLevelParameteriv;
 184    exec->GetTexParameterfv = _mesa_GetTexParameterfv;
 185    exec->GetTexParameteriv = _mesa_GetTexParameteriv;
 186    exec->Hint = _mesa_Hint;
 187    exec->IndexMask = _mesa_IndexMask;
 188    exec->InitNames = _mesa_InitNames;
 189    exec->IsEnabled = _mesa_IsEnabled;
 190    exec->IsList = _mesa_IsList;
 191    exec->LightModelf = _mesa_LightModelf;
 192    exec->LightModelfv = _mesa_LightModelfv;
 193    exec->LightModeli = _mesa_LightModeli;
 194    exec->LightModeliv = _mesa_LightModeliv;
 195    exec->Lightf = _mesa_Lightf;
 196    exec->Lightfv = _mesa_Lightfv;
 197    exec->Lighti = _mesa_Lighti;
 198    exec->Lightiv = _mesa_Lightiv;
 199    exec->LineStipple = _mesa_LineStipple;
 200    exec->LineWidth = _mesa_LineWidth;
 201    exec->ListBase = _mesa_ListBase;
 202    exec->LoadIdentity = _mesa_LoadIdentity;
 203    exec->LoadMatrixd = _mesa_LoadMatrixd;
 204    exec->LoadMatrixf = _mesa_LoadMatrixf;
 205    exec->LoadName = _mesa_LoadName;
 206    exec->LogicOp = _mesa_LogicOp;
 207    exec->Map1d = _mesa_Map1d;
 208    exec->Map1f = _mesa_Map1f;
 209    exec->Map2d = _mesa_Map2d;
 210    exec->Map2f = _mesa_Map2f;
 211    exec->MapGrid1d = _mesa_MapGrid1d;
 212    exec->MapGrid1f = _mesa_MapGrid1f;
 213    exec->MapGrid2d = _mesa_MapGrid2d;
 214    exec->MapGrid2f = _mesa_MapGrid2f;
 215    exec->MatrixMode = _mesa_MatrixMode;
 216    exec->MultMatrixd = _mesa_MultMatrixd;
 217    exec->MultMatrixf = _mesa_MultMatrixf;
 218    exec->NewList = _mesa_NewList;
 219    exec->Ortho = _mesa_Ortho;
 220    exec->PassThrough = _mesa_PassThrough;
 221    exec->PixelMapfv = _mesa_PixelMapfv;
 222    exec->PixelMapuiv = _mesa_PixelMapuiv;
 223    exec->PixelMapusv = _mesa_PixelMapusv;
 224    exec->PixelStoref = _mesa_PixelStoref;
 225    exec->PixelStorei = _mesa_PixelStorei;
 226    exec->PixelTransferf = _mesa_PixelTransferf;
 227    exec->PixelTransferi = _mesa_PixelTransferi;
 228    exec->PixelZoom = _mesa_PixelZoom;
 229    exec->PointSize = _mesa_PointSize;
 230    exec->PolygonMode = _mesa_PolygonMode;
 231    exec->PolygonOffset = _mesa_PolygonOffset;
 232    exec->PolygonStipple = _mesa_PolygonStipple;
 233    exec->PopAttrib = _mesa_PopAttrib;
 234    exec->PopMatrix = _mesa_PopMatrix;
 235    exec->PopName = _mesa_PopName;
 236    exec->PushAttrib = _mesa_PushAttrib;
 237    exec->PushMatrix = _mesa_PushMatrix;
 238    exec->PushName = _mesa_PushName;
 239    exec->RasterPos2d = _mesa_RasterPos2d;
 240    exec->RasterPos2dv = _mesa_RasterPos2dv;
 241    exec->RasterPos2f = _mesa_RasterPos2f;
 242    exec->RasterPos2fv = _mesa_RasterPos2fv;
 243    exec->RasterPos2i = _mesa_RasterPos2i;
 244    exec->RasterPos2iv = _mesa_RasterPos2iv;
 245    exec->RasterPos2s = _mesa_RasterPos2s;
 246    exec->RasterPos2sv = _mesa_RasterPos2sv;
 247    exec->RasterPos3d = _mesa_RasterPos3d;
 248    exec->RasterPos3dv = _mesa_RasterPos3dv;
 249    exec->RasterPos3f = _mesa_RasterPos3f;
 250    exec->RasterPos3fv = _mesa_RasterPos3fv;
 251    exec->RasterPos3i = _mesa_RasterPos3i;
 252    exec->RasterPos3iv = _mesa_RasterPos3iv;
 253    exec->RasterPos3s = _mesa_RasterPos3s;
 254    exec->RasterPos3sv = _mesa_RasterPos3sv;
 255    exec->RasterPos4d = _mesa_RasterPos4d;
 256    exec->RasterPos4dv = _mesa_RasterPos4dv;
 257    exec->RasterPos4f = _mesa_RasterPos4f;
 258    exec->RasterPos4fv = _mesa_RasterPos4fv;
 259    exec->RasterPos4i = _mesa_RasterPos4i;
 260    exec->RasterPos4iv = _mesa_RasterPos4iv;
 261    exec->RasterPos4s = _mesa_RasterPos4s;
 262    exec->RasterPos4sv = _mesa_RasterPos4sv;
 263    exec->ReadBuffer = _mesa_ReadBuffer;
 264    exec->ReadPixels = _mesa_ReadPixels;
 265    exec->RenderMode = _mesa_RenderMode;
 266    exec->Rotated = _mesa_Rotated;
 267    exec->Rotatef = _mesa_Rotatef;
 268    exec->Scaled = _mesa_Scaled;
 269    exec->Scalef = _mesa_Scalef;
 270    exec->Scissor = _mesa_Scissor;
 271    exec->SecondaryColorPointerEXT = _mesa_SecondaryColorPointerEXT;
 272    exec->SelectBuffer = _mesa_SelectBuffer;
 273    exec->ShadeModel = _mesa_ShadeModel;
 274    exec->StencilFunc = _mesa_StencilFunc;
 275    exec->StencilMask = _mesa_StencilMask;
 276    exec->StencilOp = _mesa_StencilOp;
 277    exec->TexEnvf = _mesa_TexEnvf;
 278    exec->TexEnvfv = _mesa_TexEnvfv;
 279    exec->TexEnvi = _mesa_TexEnvi;
 280    exec->TexEnviv = _mesa_TexEnviv;
 281    exec->TexGend = _mesa_TexGend;
 282    exec->TexGendv = _mesa_TexGendv;
 283    exec->TexGenf = _mesa_TexGenf;
 284    exec->TexGenfv = _mesa_TexGenfv;
 285    exec->TexGeni = _mesa_TexGeni;
 286    exec->TexGeniv = _mesa_TexGeniv;
 287    exec->TexImage1D = _mesa_TexImage1D;
 288    exec->TexImage2D = _mesa_TexImage2D;
 289    exec->TexParameterf = _mesa_TexParameterf;
 290    exec->TexParameterfv = _mesa_TexParameterfv;
 291    exec->TexParameteri = _mesa_TexParameteri;
 292    exec->TexParameteriv = _mesa_TexParameteriv;
 293    exec->Translated = _mesa_Translated;
 294    exec->Translatef = _mesa_Translatef;
 295    exec->Viewport = _mesa_Viewport;
 296
 297    /* 1.1 */
 298    exec->AreTexturesResident = _mesa_AreTexturesResident;
 299    exec->BindTexture = _mesa_BindTexture;
 300    exec->ColorPointer = _mesa_ColorPointer;
 301    exec->CopyTexImage1D = _mesa_CopyTexImage1D;
 302    exec->CopyTexImage2D = _mesa_CopyTexImage2D;
 303    exec->CopyTexSubImage1D = _mesa_CopyTexSubImage1D;
 304    exec->CopyTexSubImage2D = _mesa_CopyTexSubImage2D;
 305    exec->DeleteTextures = _mesa_DeleteTextures;
 306    exec->DisableClientState = _mesa_DisableClientState;
 307    exec->EdgeFlagPointer = _mesa_EdgeFlagPointer;
 308    exec->EnableClientState = _mesa_EnableClientState;
 309    exec->GenTextures = _mesa_GenTextures;
 310    exec->GetPointerv = _mesa_GetPointerv;
 311    exec->IndexPointer = _mesa_IndexPointer;
 312    exec->InterleavedArrays = _mesa_InterleavedArrays;
 313    exec->IsTexture = _mesa_IsTexture;
 314    exec->NormalPointer = _mesa_NormalPointer;
 315    exec->PopClientAttrib = _mesa_PopClientAttrib;
 316    exec->PrioritizeTextures = _mesa_PrioritizeTextures;
 317    exec->PushClientAttrib = _mesa_PushClientAttrib;
 318    exec->TexCoordPointer = _mesa_TexCoordPointer;
 319    exec->TexSubImage1D = _mesa_TexSubImage1D;
 320    exec->TexSubImage2D = _mesa_TexSubImage2D;
 321    exec->VertexPointer = _mesa_VertexPointer;
 322
 323    /* 1.2 */
 324    exec->CopyTexSubImage3D = _mesa_CopyTexSubImage3D;
 325    exec->TexImage3D = _mesa_TexImage3D;
 326    exec->TexSubImage3D = _mesa_TexSubImage3D;
 327
 328    /* OpenGL 1.2  GL_ARB_imaging */
 329    exec->BlendColor = _mesa_BlendColor;
 330    exec->BlendEquation = _mesa_BlendEquation;
 331    exec->ColorSubTable = _mesa_ColorSubTable;
 332    exec->ColorTable = _mesa_ColorTable;
 333    exec->ColorTableParameterfv = _mesa_ColorTableParameterfv;
 334    exec->ColorTableParameteriv = _mesa_ColorTableParameteriv;
 335    exec->ConvolutionFilter1D = _mesa_ConvolutionFilter1D;
 336    exec->ConvolutionFilter2D = _mesa_ConvolutionFilter2D;
 337    exec->ConvolutionParameterf = _mesa_ConvolutionParameterf;
 338    exec->ConvolutionParameterfv = _mesa_ConvolutionParameterfv;
 339    exec->ConvolutionParameteri = _mesa_ConvolutionParameteri;
 340    exec->ConvolutionParameteriv = _mesa_ConvolutionParameteriv;
 341    exec->CopyColorSubTable = _mesa_CopyColorSubTable;
 342    exec->CopyColorTable = _mesa_CopyColorTable;
 343    exec->CopyConvolutionFilter1D = _mesa_CopyConvolutionFilter1D;
 344    exec->CopyConvolutionFilter2D = _mesa_CopyConvolutionFilter2D;
 345    exec->GetColorTable = _mesa_GetColorTable;
 346    exec->GetColorTableParameterfv = _mesa_GetColorTableParameterfv;
 347    exec->GetColorTableParameteriv = _mesa_GetColorTableParameteriv;
 348    exec->GetConvolutionFilter = _mesa_GetConvolutionFilter;
 349    exec->GetConvolutionParameterfv = _mesa_GetConvolutionParameterfv;
 350    exec->GetConvolutionParameteriv = _mesa_GetConvolutionParameteriv;
 351    exec->GetHistogram = _mesa_GetHistogram;
 352    exec->GetHistogramParameterfv = _mesa_GetHistogramParameterfv;
 353    exec->GetHistogramParameteriv = _mesa_GetHistogramParameteriv;
 354    exec->GetMinmax = _mesa_GetMinmax;
 355    exec->GetMinmaxParameterfv = _mesa_GetMinmaxParameterfv;
 356    exec->GetMinmaxParameteriv = _mesa_GetMinmaxParameteriv;
 357    exec->GetSeparableFilter = _mesa_GetSeparableFilter;
 358    exec->Histogram = _mesa_Histogram;
 359    exec->Minmax = _mesa_Minmax;
 360    exec->ResetHistogram = _mesa_ResetHistogram;
 361    exec->ResetMinmax = _mesa_ResetMinmax;
 362    exec->SeparableFilter2D = _mesa_SeparableFilter2D;
 363
 364    /* 2. GL_EXT_blend_color */
 365 #if 0
 366    exec->BlendColorEXT = _mesa_BlendColorEXT;
 367 #endif
 368
 369    /* 3. GL_EXT_polygon_offset */
 370    exec->PolygonOffsetEXT = _mesa_PolygonOffsetEXT;
 371
 372    /* 6. GL_EXT_texture3d */
 373 #if 0
 374    exec->CopyTexSubImage3DEXT = _mesa_CopyTexSubImage3D;
 375    exec->TexImage3DEXT = _mesa_TexImage3DEXT;
 376    exec->TexSubImage3DEXT = _mesa_TexSubImage3D;
 377 #endif
 378
 379    /* 11. GL_EXT_histogram */
 380    exec->GetHistogramEXT = _mesa_GetHistogram;
 381    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 382    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 383    exec->GetMinmaxEXT = _mesa_GetMinmax;
 384    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 385    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 386
 387    /* ?. GL_SGIX_pixel_texture */
 388    exec->PixelTexGenSGIX = _mesa_PixelTexGenSGIX;
 389
 390    /* 15. GL_SGIS_pixel_texture */
 391    exec->PixelTexGenParameteriSGIS = _mesa_PixelTexGenParameteriSGIS;
 392    exec->PixelTexGenParameterivSGIS = _mesa_PixelTexGenParameterivSGIS;
 393    exec->PixelTexGenParameterfSGIS = _mesa_PixelTexGenParameterfSGIS;
 394    exec->PixelTexGenParameterfvSGIS = _mesa_PixelTexGenParameterfvSGIS;
 395    exec->GetPixelTexGenParameterivSGIS = _mesa_GetPixelTexGenParameterivSGIS;
 396    exec->GetPixelTexGenParameterfvSGIS = _mesa_GetPixelTexGenParameterfvSGIS;
 397
 398    /* 30. GL_EXT_vertex_array */
 399    exec->ColorPointerEXT = _mesa_ColorPointerEXT;
 400    exec->EdgeFlagPointerEXT = _mesa_EdgeFlagPointerEXT;
 401    exec->IndexPointerEXT = _mesa_IndexPointerEXT;
 402    exec->NormalPointerEXT = _mesa_NormalPointerEXT;
 403    exec->TexCoordPointerEXT = _mesa_TexCoordPointerEXT;
 404    exec->VertexPointerEXT = _mesa_VertexPointerEXT;
 405
 406    /* 37. GL_EXT_blend_minmax */
 407 #if 0
 408    exec->BlendEquationEXT = _mesa_BlendEquationEXT;
 409 #endif
 410
 411    /* 54. GL_EXT_point_parameters */
 412    exec->PointParameterfEXT = _mesa_PointParameterfEXT;
 413    exec->PointParameterfvEXT = _mesa_PointParameterfvEXT;
 414
 415    /* 78. GL_EXT_paletted_texture */
 416 #if 0
 417    exec->ColorTableEXT = _mesa_ColorTableEXT;
 418    exec->ColorSubTableEXT = _mesa_ColorSubTableEXT;
 419 #endif
 420    exec->GetColorTableEXT = _mesa_GetColorTable;
 421    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 422    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 423
 424    /* 97. GL_EXT_compiled_vertex_array */
 425    exec->LockArraysEXT = _mesa_LockArraysEXT;
 426    exec->UnlockArraysEXT = _mesa_UnlockArraysEXT;
 427
 428    /* 173. GL_INGR_blend_func_separate */
 429    exec->BlendFuncSeparateEXT = _mesa_BlendFuncSeparateEXT;
 430
 431    /* 196. GL_MESA_resize_buffers */
 432    exec->ResizeBuffersMESA = _mesa_ResizeBuffersMESA;
 433
 434    /* 197. GL_MESA_window_pos */
 435    exec->WindowPos2dMESA = _mesa_WindowPos2dMESA;
 436    exec->WindowPos2dvMESA = _mesa_WindowPos2dvMESA;
 437    exec->WindowPos2fMESA = _mesa_WindowPos2fMESA;
 438    exec->WindowPos2fvMESA = _mesa_WindowPos2fvMESA;
 439    exec->WindowPos2iMESA = _mesa_WindowPos2iMESA;
 440    exec->WindowPos2ivMESA = _mesa_WindowPos2ivMESA;
 441    exec->WindowPos2sMESA = _mesa_WindowPos2sMESA;
 442    exec->WindowPos2svMESA = _mesa_WindowPos2svMESA;
 443    exec->WindowPos3dMESA = _mesa_WindowPos3dMESA;
 444    exec->WindowPos3dvMESA = _mesa_WindowPos3dvMESA;
 445    exec->WindowPos3fMESA = _mesa_WindowPos3fMESA;
 446    exec->WindowPos3fvMESA = _mesa_WindowPos3fvMESA;
 447    exec->WindowPos3iMESA = _mesa_WindowPos3iMESA;
 448    exec->WindowPos3ivMESA = _mesa_WindowPos3ivMESA;
 449    exec->WindowPos3sMESA = _mesa_WindowPos3sMESA;
 450    exec->WindowPos3svMESA = _mesa_WindowPos3svMESA;
 451    exec->WindowPos4dMESA = _mesa_WindowPos4dMESA;
 452    exec->WindowPos4dvMESA = _mesa_WindowPos4dvMESA;
 453    exec->WindowPos4fMESA = _mesa_WindowPos4fMESA;
 454    exec->WindowPos4fvMESA = _mesa_WindowPos4fvMESA;
 455    exec->WindowPos4iMESA = _mesa_WindowPos4iMESA;
 456    exec->WindowPos4ivMESA = _mesa_WindowPos4ivMESA;
 457    exec->WindowPos4sMESA = _mesa_WindowPos4sMESA;
 458    exec->WindowPos4svMESA = _mesa_WindowPos4svMESA;
 459
 460    /* 233. GL_NV_vertex_program */
 461    exec->BindProgramNV = _mesa_BindProgramNV;
 462    exec->DeleteProgramsNV = _mesa_DeleteProgramsNV;
 463    exec->ExecuteProgramNV = _mesa_ExecuteProgramNV;
 464    exec->GenProgramsNV = _mesa_GenProgramsNV;
 465    exec->AreProgramsResidentNV = _mesa_AreProgramsResidentNV;
 466    exec->RequestResidentProgramsNV = _mesa_RequestResidentProgramsNV;
 467    exec->GetProgramParameterfvNV = _mesa_GetProgramParameterfvNV;
 468    exec->GetProgramParameterdvNV = _mesa_GetProgramParameterdvNV;
 469    exec->GetProgramivNV = _mesa_GetProgramivNV;
 470    exec->GetProgramStringNV = _mesa_GetProgramStringNV;
 471    exec->GetTrackMatrixivNV = _mesa_GetTrackMatrixivNV;
 472    exec->GetVertexAttribdvNV = _mesa_GetVertexAttribdvNV;
 473    exec->GetVertexAttribfvNV = _mesa_GetVertexAttribfvNV;
 474    exec->GetVertexAttribivNV = _mesa_GetVertexAttribivNV;
 475    exec->GetVertexAttribPointervNV = _mesa_GetVertexAttribPointervNV;
 476    exec->IsProgramNV = _mesa_IsProgramNV;
 477    exec->LoadProgramNV = _mesa_LoadProgramNV;
 478    exec->ProgramParameter4dNV = _mesa_ProgramParameter4dNV;
 479    exec->ProgramParameter4dvNV = _mesa_ProgramParameter4dvNV;
 480    exec->ProgramParameter4fNV = _mesa_ProgramParameter4fNV;
 481    exec->ProgramParameter4fvNV = _mesa_ProgramParameter4fvNV;
 482    exec->ProgramParameters4dvNV = _mesa_ProgramParameters4dvNV;
 483    exec->ProgramParameters4fvNV = _mesa_ProgramParameters4fvNV;
 484    exec->TrackMatrixNV = _mesa_TrackMatrixNV;
 485    exec->VertexAttribPointerNV = _mesa_VertexAttribPointerNV;
 486
 487    /* 262. GL_NV_point_sprite */
 488    exec->PointParameteriNV = _mesa_PointParameteriNV;
 489    exec->PointParameterivNV = _mesa_PointParameterivNV;
 490
 491    /* ARB 1. GL_ARB_multitexture */
 492    exec->ActiveTextureARB = _mesa_ActiveTextureARB;
 493    exec->ClientActiveTextureARB = _mesa_ClientActiveTextureARB;
 494
 495    /* ARB 3. GL_ARB_transpose_matrix */
 496    exec->LoadTransposeMatrixdARB = _mesa_LoadTransposeMatrixdARB;
 497    exec->LoadTransposeMatrixfARB = _mesa_LoadTransposeMatrixfARB;
 498    exec->MultTransposeMatrixdARB = _mesa_MultTransposeMatrixdARB;
 499    exec->MultTransposeMatrixfARB = _mesa_MultTransposeMatrixfARB;
 500
 501    /* ARB 5. GL_ARB_multisample */
 502    exec->SampleCoverageARB = _mesa_SampleCoverageARB;
 503
 504    /* ARB 12. GL_ARB_texture_compression */
 505    exec->CompressedTexImage3DARB = _mesa_CompressedTexImage3DARB;
 506    exec->CompressedTexImage2DARB = _mesa_CompressedTexImage2DARB;
 507    exec->CompressedTexImage1DARB = _mesa_CompressedTexImage1DARB;
 508    exec->CompressedTexSubImage3DARB = _mesa_CompressedTexSubImage3DARB;
 509    exec->CompressedTexSubImage2DARB = _mesa_CompressedTexSubImage2DARB;
 510    exec->CompressedTexSubImage1DARB = _mesa_CompressedTexSubImage1DARB;
 511    exec->GetCompressedTexImageARB = _mesa_GetCompressedTexImageARB;
 512
 513    /* ARB 14. GL_ARB_point_parameters */
 514    /* reuse EXT_point_parameters functions */
 515
 516 }
 517
 518
 519
 520 /**********************************************************************/
 521 /*****                   State update logic                       *****/
 522 /**********************************************************************/
 523
 524
 525 static void
 526 update_polygon( GLcontext *ctx )
 527 {
 528    ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
 529
 530    if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
 531       ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
 532
 533    /* Any Polygon offsets enabled? */
 534    ctx->Polygon._OffsetAny = GL_FALSE;
 535    ctx->_TriangleCaps &= ~DD_TRI_OFFSET;
 536
 537    if (ctx->Polygon.OffsetPoint ||
 538        ctx->Polygon.OffsetLine ||
 539        ctx->Polygon.OffsetFill) {
 540       ctx->_TriangleCaps |= DD_TRI_OFFSET;
 541       ctx->Polygon._OffsetAny = GL_TRUE;
 542    }
 543 }
 544
 545 static void
 546 calculate_model_project_matrix( GLcontext *ctx )
 547 {
 548       _math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
 549                                ctx->ProjectionMatrixStack.Top,
 550                                ctx->ModelviewMatrixStack.Top );
 551
 552       _math_matrix_analyse( &ctx->_ModelProjectMatrix );
 553 }
 554
 555 static void
 556 update_modelview_scale( GLcontext *ctx )
 557 {
 558    ctx->_ModelViewInvScale = 1.0F;
 559    if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_UNIFORM_SCALE |
 560                                MAT_FLAG_GENERAL_SCALE |
 561                                MAT_FLAG_GENERAL_3D |
 562                                MAT_FLAG_GENERAL) ) {
 563       const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
 564       GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
 565       if (f < 1e-12) f = 1.0;
 566       if (ctx->_NeedEyeCoords)
 567          ctx->_ModelViewInvScale = (GLfloat) (1.0/GL_SQRT(f));
 568       else
 569          ctx->_ModelViewInvScale = (GLfloat) GL_SQRT(f);
 570    }
 571 }
 572
 573
 574 /* Bring uptodate any state that relies on _NeedEyeCoords.
 575  */
 576 static void
 577 update_tnl_spaces( GLcontext *ctx, GLuint oldneedeyecoords )
 578 {
 579    /* Check if the truth-value interpretations of the bitfields have
 580     * changed:
 581     */
 582    if ((oldneedeyecoords == 0) != (ctx->_NeedEyeCoords == 0)) {
 583       /* Recalculate all state that depends on _NeedEyeCoords.
 584        */
 585       update_modelview_scale(ctx);
 586       _mesa_compute_light_positions( ctx );
 587
 588       if (ctx->Driver.LightingSpaceChange)
 589          ctx->Driver.LightingSpaceChange( ctx );
 590    }
 591    else {
 592       GLuint new_state = ctx->NewState;
 593
 594       /* Recalculate that same state only if it has been invalidated
 595        * by other statechanges.
 596        */
 597       if (new_state & _NEW_MODELVIEW)
 598          update_modelview_scale(ctx);
 599
 600       if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW))
 601          _mesa_compute_light_positions( ctx );
 602    }
 603 }
 604
 605
 606 static void
 607 update_drawbuffer( GLcontext *ctx )
 608 {
 609    ctx->DrawBuffer->_Xmin = 0;
 610    ctx->DrawBuffer->_Ymin = 0;
 611    ctx->DrawBuffer->_Xmax = ctx->DrawBuffer->Width;
 612    ctx->DrawBuffer->_Ymax = ctx->DrawBuffer->Height;
 613    if (ctx->Scissor.Enabled) {
 614       if (ctx->Scissor.X > ctx->DrawBuffer->_Xmin) {
 615          ctx->DrawBuffer->_Xmin = ctx->Scissor.X;
 616       }
 617       if (ctx->Scissor.Y > ctx->DrawBuffer->_Ymin) {
 618          ctx->DrawBuffer->_Ymin = ctx->Scissor.Y;
 619       }
 620       if (ctx->Scissor.X + ctx->Scissor.Width < ctx->DrawBuffer->_Xmax) {
 621          ctx->DrawBuffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
 622       }
 623       if (ctx->Scissor.Y + ctx->Scissor.Height < ctx->DrawBuffer->_Ymax) {
 624          ctx->DrawBuffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
 625       }
 626    }
 627 }
 628
 629
 630 /* NOTE: This routine references Tranform attribute values to compute
 631  * userclip positions in clip space, but is only called on
 632  * _NEW_PROJECTION.  The _mesa_ClipPlane() function keeps these values
 633  * uptodate across changes to the Transform attributes.
 634  */
 635 static void
 636 update_projection( GLcontext *ctx )
 637 {
 638    _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
 639
 640    /* Recompute clip plane positions in clipspace.  This is also done
 641     * in _mesa_ClipPlane().
 642     */
 643    if (ctx->Transform.ClipPlanesEnabled) {
 644       GLuint p;
 645       for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
 646          if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
 647             _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
 648                                  ctx->Transform.EyeUserPlane[p],
 649                                  ctx->ProjectionMatrixStack.Top->inv );
 650          }
 651       }
 652    }
 653 }
 654
 655
 656 /*
 657  * Return a bitmask of IMAGE_*_BIT flags which to indicate which
 658  * pixel transfer operations are enabled.
 659  */
 660 static void
 661 update_image_transfer_state(GLcontext *ctx)
 662 {
 663    GLuint mask = 0;
 664
 665    if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||
 666        ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
 667        ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||
 668        ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
 669       mask |= IMAGE_SCALE_BIAS_BIT;
 670
 671    if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
 672       mask |= IMAGE_SHIFT_OFFSET_BIT;
 673
 674    if (ctx->Pixel.MapColorFlag)
 675       mask |= IMAGE_MAP_COLOR_BIT;
 676
 677    if (ctx->Pixel.ColorTableEnabled)
 678       mask |= IMAGE_COLOR_TABLE_BIT;
 679
 680    if (ctx->Pixel.Convolution1DEnabled ||
 681        ctx->Pixel.Convolution2DEnabled ||
 682        ctx->Pixel.Separable2DEnabled) {
 683       mask |= IMAGE_CONVOLUTION_BIT;
 684       if (ctx->Pixel.PostConvolutionScale[0] != 1.0F ||
 685           ctx->Pixel.PostConvolutionScale[1] != 1.0F ||
 686           ctx->Pixel.PostConvolutionScale[2] != 1.0F ||
 687           ctx->Pixel.PostConvolutionScale[3] != 1.0F ||
 688           ctx->Pixel.PostConvolutionBias[0] != 0.0F ||
 689           ctx->Pixel.PostConvolutionBias[1] != 0.0F ||
 690           ctx->Pixel.PostConvolutionBias[2] != 0.0F ||
 691           ctx->Pixel.PostConvolutionBias[3] != 0.0F) {
 692          mask |= IMAGE_POST_CONVOLUTION_SCALE_BIAS;
 693       }
 694    }
 695
 696    if (ctx->Pixel.PostConvolutionColorTableEnabled)
 697       mask |= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT;
 698
 699    if (ctx->ColorMatrixStack.Top->type != MATRIX_IDENTITY ||
 700        ctx->Pixel.PostColorMatrixScale[0] != 1.0F ||
 701        ctx->Pixel.PostColorMatrixBias[0]  != 0.0F ||
 702        ctx->Pixel.PostColorMatrixScale[1] != 1.0F ||
 703        ctx->Pixel.PostColorMatrixBias[1]  != 0.0F ||
 704        ctx->Pixel.PostColorMatrixScale[2] != 1.0F ||
 705        ctx->Pixel.PostColorMatrixBias[2]  != 0.0F ||
 706        ctx->Pixel.PostColorMatrixScale[3] != 1.0F ||
 707        ctx->Pixel.PostColorMatrixBias[3]  != 0.0F)
 708       mask |= IMAGE_COLOR_MATRIX_BIT;
 709
 710    if (ctx->Pixel.PostColorMatrixColorTableEnabled)
 711       mask |= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT;
 712
 713    if (ctx->Pixel.HistogramEnabled)
 714       mask |= IMAGE_HISTOGRAM_BIT;
 715
 716    if (ctx->Pixel.MinMaxEnabled)
 717       mask |= IMAGE_MIN_MAX_BIT;
 718
 719    ctx->_ImageTransferState = mask;
 720 }
 721
 722
 723
 724
 725 /* Note: This routine refers to derived texture attribute values to
 726  * compute the ENABLE_TEXMAT flags, but is only called on
 727  * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
 728  * flags are updated by _mesa_update_textures(), below.
 729  *
 730  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 731  * will be computed twice.
 732  */
 733 static void
 734 update_texture_matrices( GLcontext *ctx )
 735 {
 736    GLuint i;
 737
 738    ctx->Texture._TexMatEnabled = 0;
 739
 740    for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
 741       if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
 742          _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
 743
 744          if (ctx->Texture.Unit[i]._ReallyEnabled &&
 745              ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
 746             ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
 747
 748          if (ctx->Driver.TextureMatrix)
 749             ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
 750       }
 751    }
 752 }
 753
 754
 755 /* Note: This routine refers to derived texture matrix values to
 756  * compute the ENABLE_TEXMAT flags, but is only called on
 757  * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
 758  * flags are updated by _mesa_update_texture_matrices, above.
 759  *
 760  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 761  * will be computed twice.
 762  */
 763 static void
 764 update_texture_state( GLcontext *ctx )
 765 {
 766    GLuint unit;
 767
 768    ctx->Texture._ReallyEnabled = 0;  /* XXX obsolete */
 769    ctx->Texture._EnabledUnits = 0;
 770    ctx->Texture._GenFlags = 0;
 771    ctx->_NeedNormals &= ~NEED_NORMALS_TEXGEN;
 772    ctx->_NeedEyeCoords &= ~NEED_EYE_TEXGEN;
 773    ctx->Texture._TexMatEnabled = 0;
 774    ctx->Texture._TexGenEnabled = 0;
 775
 776    /* Update texture unit state.
 777     */
 778    for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
 779       struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 780
 781       texUnit->_ReallyEnabled = 0;
 782       texUnit->_GenFlags = 0;
 783
 784       if (!texUnit->Enabled)
 785          continue;
 786
 787       /* Look for the highest-priority texture target that's enabled and
 788        * complete.  That's the one we'll use for texturing.
 789        */
 790       if (texUnit->Enabled & TEXTURE_CUBE_BIT) {
 791          struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
 792          if (!texObj->Complete) {
 793             _mesa_test_texobj_completeness(ctx, texObj);
 794          }
 795          if (texObj->Complete) {
 796             texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
 797             texUnit->_Current = texObj;
 798          }
 799       }
 800
 801       if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_3D_BIT)) {
 802          struct gl_texture_object *texObj = texUnit->Current3D;
 803          if (!texObj->Complete) {
 804             _mesa_test_texobj_completeness(ctx, texObj);
 805          }
 806          if (texObj->Complete) {
 807             texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
 808             texUnit->_Current = texObj;
 809          }
 810       }
 811
 812       if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_RECT_BIT)) {
 813          struct gl_texture_object *texObj = texUnit->CurrentRect;
 814          if (!texObj->Complete) {
 815             _mesa_test_texobj_completeness(ctx, texObj);
 816          }
 817          if (texObj->Complete) {
 818             texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
 819             texUnit->_Current = texObj;
 820          }
 821       }
 822
 823       if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_2D_BIT)) {
 824          struct gl_texture_object *texObj = texUnit->Current2D;
 825          if (!texObj->Complete) {
 826             _mesa_test_texobj_completeness(ctx, texObj);
 827          }
 828          if (texObj->Complete) {
 829             texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
 830             texUnit->_Current = texObj;
 831          }
 832       }
 833
 834       if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_1D_BIT)) {
 835          struct gl_texture_object *texObj = texUnit->Current1D;
 836          if (!texObj->Complete) {
 837             _mesa_test_texobj_completeness(ctx, texObj);
 838          }
 839          if (texObj->Complete) {
 840             texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
 841             texUnit->_Current = texObj;
 842          }
 843       }
 844
 845       if (!texUnit->_ReallyEnabled) {
 846          texUnit->_Current = NULL;
 847          continue;
 848       }
 849
 850       /* Texture._ReallyEnabled records the enable state for all units in
 851        * one word.
 852        */
 853       {
 854          GLuint flag = texUnit->_ReallyEnabled << (unit * NUM_TEXTURE_TARGETS);
 855          ctx->Texture._ReallyEnabled |= flag;  /* XXX obsolete field! */
 856          if (texUnit->_ReallyEnabled)
 857             ctx->Texture._EnabledUnits |= (1 << unit);
 858       }
 859
 860       if (texUnit->TexGenEnabled) {
 861          if (texUnit->TexGenEnabled & S_BIT) {
 862             texUnit->_GenFlags |= texUnit->_GenBitS;
 863          }
 864          if (texUnit->TexGenEnabled & T_BIT) {
 865             texUnit->_GenFlags |= texUnit->_GenBitT;
 866          }
 867          if (texUnit->TexGenEnabled & Q_BIT) {
 868             texUnit->_GenFlags |= texUnit->_GenBitQ;
 869          }
 870          if (texUnit->TexGenEnabled & R_BIT) {
 871             texUnit->_GenFlags |= texUnit->_GenBitR;
 872          }
 873
 874          ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
 875          ctx->Texture._GenFlags |= texUnit->_GenFlags;
 876       }
 877
 878       if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
 879          ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
 880    }
 881
 882    if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS) {
 883       ctx->_NeedNormals |= NEED_NORMALS_TEXGEN;
 884       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
 885    }
 886
 887    if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) {
 888       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
 889    }
 890 }
 891
 892
 893
 894 /*
 895  * If ctx->NewState is non-zero then this function MUST be called before
 896  * rendering any primitive.  Basically, function pointers and miscellaneous
 897  * flags are updated to reflect the current state of the state machine.
 898  *
 899  * The above constraint is now maintained largely by the two Exec
 900  * dispatch tables, which trigger the appropriate flush on transition
 901  * between State and Geometry modes.
 902  *
 903  * Special care is taken with the derived value _NeedEyeCoords.  This
 904  * is a bitflag which is updated with information from a number of
 905  * attribute groups (MODELVIEW, LIGHT, TEXTURE).  A lot of derived
 906  * state references this value, and must be treated with care to
 907  * ensure that updates are done correctly.  All state dependent on
 908  * _NeedEyeCoords is calculated from within _mesa_update_tnl_spaces(),
 909  * and from nowhere else.
 910  */
 911 void _mesa_update_state( GLcontext *ctx )
 912 {
 913    const GLuint new_state = ctx->NewState;
 914    const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
 915
 916    if (MESA_VERBOSE & VERBOSE_STATE)
 917       _mesa_print_state("_mesa_update_state", new_state);
 918
 919    if (new_state & _NEW_MODELVIEW)
 920       _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
 921
 922    if (new_state & _NEW_PROJECTION)
 923       update_projection( ctx );
 924
 925    if (new_state & _NEW_TEXTURE_MATRIX)
 926       update_texture_matrices( ctx );
 927
 928    if (new_state & _NEW_COLOR_MATRIX)
 929       _math_matrix_analyse( ctx->ColorMatrixStack.Top );
 930
 931    /* References ColorMatrix.type (derived above).
 932     */
 933    if (new_state & _IMAGE_NEW_TRANSFER_STATE)
 934       update_image_transfer_state(ctx);
 935
 936    /* Contributes to NeedEyeCoords, NeedNormals.
 937     */
 938    if (new_state & _NEW_TEXTURE)
 939       update_texture_state( ctx );
 940
 941    if (new_state & (_NEW_BUFFERS|_NEW_SCISSOR))
 942       update_drawbuffer( ctx );
 943
 944    if (new_state & _NEW_POLYGON)
 945       update_polygon( ctx );
 946
 947    /* Contributes to NeedEyeCoords, NeedNormals.
 948     */
 949    if (new_state & _NEW_LIGHT)
 950       _mesa_update_lighting( ctx );
 951
 952    /* We can light in object space if the modelview matrix preserves
 953     * lengths and relative angles.
 954     */
 955    if (new_state & (_NEW_MODELVIEW|_NEW_LIGHT)) {
 956       ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT_MODELVIEW;
 957       if (ctx->Light.Enabled &&
 958           !TEST_MAT_FLAGS( ctx->ModelviewMatrixStack.Top, MAT_FLAGS_LENGTH_PRESERVING))
 959             ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
 960    }
 961
 962
 963 #if 0
 964    /* XXX this is a bit of a hack.  We should be checking elsewhere if
 965     * vertex program mode is enabled.  We set _NeedEyeCoords to zero to
 966     * ensure that the combined modelview/projection matrix is computed
 967     * in calculate_model_project_matrix().
 968     */
 969    if (ctx->VertexProgram.Enabled)
 970       ctx->_NeedEyeCoords = 0;
 971    /* KW: it's now always computed.
 972     */
 973 #endif
 974
 975    /* Keep ModelviewProject uptodate always to allow tnl
 976     * implementations that go model->clip even when eye is required.
 977     */
 978    if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
 979       calculate_model_project_matrix(ctx);
 980
 981    /* ctx->_NeedEyeCoords is now uptodate.
 982     *
 983     * If the truth value of this variable has changed, update for the
 984     * new lighting space and recompute the positions of lights and the
 985     * normal transform.
 986     *
 987     * If the lighting space hasn't changed, may still need to recompute
 988     * light positions & normal transforms for other reasons.
 989     */
 990    if (new_state & (_NEW_MODELVIEW |
 991                     _NEW_LIGHT |
 992                     _MESA_NEW_NEED_EYE_COORDS))
 993       update_tnl_spaces( ctx, oldneedeyecoords );
 994
 995    /*
 996     * Here the driver sets up all the ctx->Driver function pointers
 997     * to it's specific, private functions, and performs any
 998     * internal state management necessary, including invalidating
 999     * state of active modules.
1000     *
1001     * Set ctx->NewState to zero to avoid recursion if
1002     * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
1003     */
1004    ctx->NewState = 0;
1005    ctx->Driver.UpdateState(ctx, new_state);
1006    ctx->Array.NewState = 0;
1007
1008    /* At this point we can do some assertions to be sure the required
1009     * device driver function pointers are all initialized.
1010     */
1011    ASSERT(ctx->Driver.GetString);
1012    ASSERT(ctx->Driver.UpdateState);
1013    ASSERT(ctx->Driver.Clear);
1014    ASSERT(ctx->Driver.SetDrawBuffer);
1015    ASSERT(ctx->Driver.GetBufferSize);
1016    if (ctx->Visual.accumRedBits > 0) {
1017       ASSERT(ctx->Driver.Accum);
1018    }
1019    ASSERT(ctx->Driver.DrawPixels);
1020    ASSERT(ctx->Driver.ReadPixels);
1021    ASSERT(ctx->Driver.CopyPixels);
1022    ASSERT(ctx->Driver.Bitmap);
1023    ASSERT(ctx->Driver.ResizeBuffers);
1024    ASSERT(ctx->Driver.TexImage1D);
1025    ASSERT(ctx->Driver.TexImage2D);
1026    ASSERT(ctx->Driver.TexImage3D);
1027    ASSERT(ctx->Driver.TexSubImage1D);
1028    ASSERT(ctx->Driver.TexSubImage2D);
1029    ASSERT(ctx->Driver.TexSubImage3D);
1030    ASSERT(ctx->Driver.CopyTexImage1D);
1031    ASSERT(ctx->Driver.CopyTexImage2D);
1032    ASSERT(ctx->Driver.CopyTexSubImage1D);
1033    ASSERT(ctx->Driver.CopyTexSubImage2D);
1034    ASSERT(ctx->Driver.CopyTexSubImage3D);
1035    if (ctx->Extensions.ARB_texture_compression) {
1036       ASSERT(ctx->Driver.BaseCompressedTexFormat);
1037       ASSERT(ctx->Driver.CompressedTextureSize);
1038       ASSERT(ctx->Driver.GetCompressedTexImage);
1039 #if 0  /* HW drivers need these, but not SW rasterizers */
1040       ASSERT(ctx->Driver.CompressedTexImage1D);
1041       ASSERT(ctx->Driver.CompressedTexImage2D);
1042       ASSERT(ctx->Driver.CompressedTexImage3D);
1043       ASSERT(ctx->Driver.CompressedTexSubImage1D);
1044       ASSERT(ctx->Driver.CompressedTexSubImage2D);
1045       ASSERT(ctx->Driver.CompressedTexSubImage3D);
1046 #endif
1047    }
1048 }
1049
1050 /* Is this helpful?
1051  */
1052 void
1053 _mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag )
1054 {
1055    if (flag)
1056       ctx->_NeedEyeCoords &= ~NEED_EYE_DRIVER;
1057    else
1058       ctx->_NeedEyeCoords |= NEED_EYE_DRIVER;
1059
1060    ctx->NewState |= _NEW_POINT; /* one of the bits from
1061                                  * _MESA_NEW_NEED_EYE_COORDS.
1062                                  */
1063 }