src/mesa/main/state.c

   1 /* $Id: state.c,v 1.105 2003/04/21 14:55:17 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  5.1
   6  *
   7  * Copyright (C) 1999-2003  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  * /brief This file manages recalculation of derived values in the
  30  * __GLcontext.  Also, this is where we initialize the API dispatch table.
  31  */
  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 "matrix.h"
  64 #include "pixel.h"
  65 #include "points.h"
  66 #include "polygon.h"
  67 #include "rastpos.h"
  68 #include "state.h"
  69 #include "stencil.h"
  70 #include "teximage.h"
  71 #include "texobj.h"
  72 #include "texstate.h"
  73 #include "mtypes.h"
  74 #include "varray.h"
  75 #if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
  76 #include "nvprogram.h"
  77 #endif
  78 #if FEATURE_NV_fragment_program
  79 #include "nvfragprog.h"
  80 #endif
  81
  82 #include "math/m_matrix.h"
  83 #include "math/m_xform.h"
  84
  85
  86 static int
  87 generic_noop(void)
  88 {
  89 #ifdef DEBUG
  90    _mesa_problem(NULL, "User called no-op dispatch function");
  91 #endif
  92    return 0;
  93 }
  94
  95
  96 /*
  97  * Set all pointers in the given dispatch table to point to a
  98  * generic no-op function.
  99  */
 100 void
 101 _mesa_init_no_op_table(struct _glapi_table *table, GLuint tableSize)
 102 {
 103    GLuint i;
 104    void **dispatch = (void **) table;
 105    for (i = 0; i < tableSize; i++) {
 106       dispatch[i] = (void *) generic_noop;
 107    }
 108 }
 109
 110
 111
 112 /*
 113  * Initialize the given dispatch table with pointers to Mesa's
 114  * immediate-mode commands.
 115  *
 116  * Pointers to begin/end object commands and a few others
 117  * are provided via the vtxfmt interface elsewhere.
 118  */
 119 void
 120 _mesa_init_exec_table(struct _glapi_table *exec, GLuint tableSize)
 121 {
 122    /* first initialize all dispatch slots to no-op */
 123    _mesa_init_no_op_table(exec, tableSize);
 124
 125    _mesa_loopback_init_api_table( exec, GL_TRUE );
 126
 127    /* load the dispatch slots we understand */
 128    exec->Accum = _mesa_Accum;
 129    exec->AlphaFunc = _mesa_AlphaFunc;
 130    exec->Bitmap = _mesa_Bitmap;
 131    exec->BlendFunc = _mesa_BlendFunc;
 132    exec->CallList = _mesa_CallList;
 133    exec->CallLists = _mesa_CallLists;
 134    exec->Clear = _mesa_Clear;
 135    exec->ClearAccum = _mesa_ClearAccum;
 136    exec->ClearColor = _mesa_ClearColor;
 137    exec->ClearDepth = _mesa_ClearDepth;
 138    exec->ClearIndex = _mesa_ClearIndex;
 139    exec->ClearStencil = _mesa_ClearStencil;
 140    exec->ClipPlane = _mesa_ClipPlane;
 141    exec->ColorMask = _mesa_ColorMask;
 142    exec->ColorMaterial = _mesa_ColorMaterial;
 143    exec->CopyPixels = _mesa_CopyPixels;
 144    exec->CullFace = _mesa_CullFace;
 145    exec->DeleteLists = _mesa_DeleteLists;
 146    exec->DepthFunc = _mesa_DepthFunc;
 147    exec->DepthMask = _mesa_DepthMask;
 148    exec->DepthRange = _mesa_DepthRange;
 149    exec->Disable = _mesa_Disable;
 150    exec->DrawBuffer = _mesa_DrawBuffer;
 151    exec->DrawPixels = _mesa_DrawPixels;
 152    exec->Enable = _mesa_Enable;
 153    exec->EndList = _mesa_EndList;
 154    exec->FeedbackBuffer = _mesa_FeedbackBuffer;
 155    exec->Finish = _mesa_Finish;
 156    exec->Flush = _mesa_Flush;
 157    exec->FogCoordPointerEXT = _mesa_FogCoordPointerEXT;
 158    exec->Fogf = _mesa_Fogf;
 159    exec->Fogfv = _mesa_Fogfv;
 160    exec->Fogi = _mesa_Fogi;
 161    exec->Fogiv = _mesa_Fogiv;
 162    exec->FrontFace = _mesa_FrontFace;
 163    exec->Frustum = _mesa_Frustum;
 164    exec->GenLists = _mesa_GenLists;
 165    exec->GetBooleanv = _mesa_GetBooleanv;
 166    exec->GetClipPlane = _mesa_GetClipPlane;
 167    exec->GetDoublev = _mesa_GetDoublev;
 168    exec->GetError = _mesa_GetError;
 169    exec->GetFloatv = _mesa_GetFloatv;
 170    exec->GetIntegerv = _mesa_GetIntegerv;
 171    exec->GetLightfv = _mesa_GetLightfv;
 172    exec->GetLightiv = _mesa_GetLightiv;
 173    exec->GetMapdv = _mesa_GetMapdv;
 174    exec->GetMapfv = _mesa_GetMapfv;
 175    exec->GetMapiv = _mesa_GetMapiv;
 176    exec->GetMaterialfv = _mesa_GetMaterialfv;
 177    exec->GetMaterialiv = _mesa_GetMaterialiv;
 178    exec->GetPixelMapfv = _mesa_GetPixelMapfv;
 179    exec->GetPixelMapuiv = _mesa_GetPixelMapuiv;
 180    exec->GetPixelMapusv = _mesa_GetPixelMapusv;
 181    exec->GetPolygonStipple = _mesa_GetPolygonStipple;
 182    exec->GetString = _mesa_GetString;
 183    exec->GetTexEnvfv = _mesa_GetTexEnvfv;
 184    exec->GetTexEnviv = _mesa_GetTexEnviv;
 185    exec->GetTexGendv = _mesa_GetTexGendv;
 186    exec->GetTexGenfv = _mesa_GetTexGenfv;
 187    exec->GetTexGeniv = _mesa_GetTexGeniv;
 188    exec->GetTexImage = _mesa_GetTexImage;
 189    exec->GetTexLevelParameterfv = _mesa_GetTexLevelParameterfv;
 190    exec->GetTexLevelParameteriv = _mesa_GetTexLevelParameteriv;
 191    exec->GetTexParameterfv = _mesa_GetTexParameterfv;
 192    exec->GetTexParameteriv = _mesa_GetTexParameteriv;
 193    exec->Hint = _mesa_Hint;
 194    exec->IndexMask = _mesa_IndexMask;
 195    exec->InitNames = _mesa_InitNames;
 196    exec->IsEnabled = _mesa_IsEnabled;
 197    exec->IsList = _mesa_IsList;
 198    exec->LightModelf = _mesa_LightModelf;
 199    exec->LightModelfv = _mesa_LightModelfv;
 200    exec->LightModeli = _mesa_LightModeli;
 201    exec->LightModeliv = _mesa_LightModeliv;
 202    exec->Lightf = _mesa_Lightf;
 203    exec->Lightfv = _mesa_Lightfv;
 204    exec->Lighti = _mesa_Lighti;
 205    exec->Lightiv = _mesa_Lightiv;
 206    exec->LineStipple = _mesa_LineStipple;
 207    exec->LineWidth = _mesa_LineWidth;
 208    exec->ListBase = _mesa_ListBase;
 209    exec->LoadIdentity = _mesa_LoadIdentity;
 210    exec->LoadMatrixd = _mesa_LoadMatrixd;
 211    exec->LoadMatrixf = _mesa_LoadMatrixf;
 212    exec->LoadName = _mesa_LoadName;
 213    exec->LogicOp = _mesa_LogicOp;
 214    exec->Map1d = _mesa_Map1d;
 215    exec->Map1f = _mesa_Map1f;
 216    exec->Map2d = _mesa_Map2d;
 217    exec->Map2f = _mesa_Map2f;
 218    exec->MapGrid1d = _mesa_MapGrid1d;
 219    exec->MapGrid1f = _mesa_MapGrid1f;
 220    exec->MapGrid2d = _mesa_MapGrid2d;
 221    exec->MapGrid2f = _mesa_MapGrid2f;
 222    exec->MatrixMode = _mesa_MatrixMode;
 223    exec->MultMatrixd = _mesa_MultMatrixd;
 224    exec->MultMatrixf = _mesa_MultMatrixf;
 225    exec->NewList = _mesa_NewList;
 226    exec->Ortho = _mesa_Ortho;
 227    exec->PassThrough = _mesa_PassThrough;
 228    exec->PixelMapfv = _mesa_PixelMapfv;
 229    exec->PixelMapuiv = _mesa_PixelMapuiv;
 230    exec->PixelMapusv = _mesa_PixelMapusv;
 231    exec->PixelStoref = _mesa_PixelStoref;
 232    exec->PixelStorei = _mesa_PixelStorei;
 233    exec->PixelTransferf = _mesa_PixelTransferf;
 234    exec->PixelTransferi = _mesa_PixelTransferi;
 235    exec->PixelZoom = _mesa_PixelZoom;
 236    exec->PointSize = _mesa_PointSize;
 237    exec->PolygonMode = _mesa_PolygonMode;
 238    exec->PolygonOffset = _mesa_PolygonOffset;
 239    exec->PolygonStipple = _mesa_PolygonStipple;
 240    exec->PopAttrib = _mesa_PopAttrib;
 241    exec->PopMatrix = _mesa_PopMatrix;
 242    exec->PopName = _mesa_PopName;
 243    exec->PushAttrib = _mesa_PushAttrib;
 244    exec->PushMatrix = _mesa_PushMatrix;
 245    exec->PushName = _mesa_PushName;
 246    exec->RasterPos2d = _mesa_RasterPos2d;
 247    exec->RasterPos2dv = _mesa_RasterPos2dv;
 248    exec->RasterPos2f = _mesa_RasterPos2f;
 249    exec->RasterPos2fv = _mesa_RasterPos2fv;
 250    exec->RasterPos2i = _mesa_RasterPos2i;
 251    exec->RasterPos2iv = _mesa_RasterPos2iv;
 252    exec->RasterPos2s = _mesa_RasterPos2s;
 253    exec->RasterPos2sv = _mesa_RasterPos2sv;
 254    exec->RasterPos3d = _mesa_RasterPos3d;
 255    exec->RasterPos3dv = _mesa_RasterPos3dv;
 256    exec->RasterPos3f = _mesa_RasterPos3f;
 257    exec->RasterPos3fv = _mesa_RasterPos3fv;
 258    exec->RasterPos3i = _mesa_RasterPos3i;
 259    exec->RasterPos3iv = _mesa_RasterPos3iv;
 260    exec->RasterPos3s = _mesa_RasterPos3s;
 261    exec->RasterPos3sv = _mesa_RasterPos3sv;
 262    exec->RasterPos4d = _mesa_RasterPos4d;
 263    exec->RasterPos4dv = _mesa_RasterPos4dv;
 264    exec->RasterPos4f = _mesa_RasterPos4f;
 265    exec->RasterPos4fv = _mesa_RasterPos4fv;
 266    exec->RasterPos4i = _mesa_RasterPos4i;
 267    exec->RasterPos4iv = _mesa_RasterPos4iv;
 268    exec->RasterPos4s = _mesa_RasterPos4s;
 269    exec->RasterPos4sv = _mesa_RasterPos4sv;
 270    exec->ReadBuffer = _mesa_ReadBuffer;
 271    exec->ReadPixels = _mesa_ReadPixels;
 272    exec->RenderMode = _mesa_RenderMode;
 273    exec->Rotated = _mesa_Rotated;
 274    exec->Rotatef = _mesa_Rotatef;
 275    exec->Scaled = _mesa_Scaled;
 276    exec->Scalef = _mesa_Scalef;
 277    exec->Scissor = _mesa_Scissor;
 278    exec->SecondaryColorPointerEXT = _mesa_SecondaryColorPointerEXT;
 279    exec->SelectBuffer = _mesa_SelectBuffer;
 280    exec->ShadeModel = _mesa_ShadeModel;
 281    exec->StencilFunc = _mesa_StencilFunc;
 282    exec->StencilMask = _mesa_StencilMask;
 283    exec->StencilOp = _mesa_StencilOp;
 284    exec->TexEnvf = _mesa_TexEnvf;
 285    exec->TexEnvfv = _mesa_TexEnvfv;
 286    exec->TexEnvi = _mesa_TexEnvi;
 287    exec->TexEnviv = _mesa_TexEnviv;
 288    exec->TexGend = _mesa_TexGend;
 289    exec->TexGendv = _mesa_TexGendv;
 290    exec->TexGenf = _mesa_TexGenf;
 291    exec->TexGenfv = _mesa_TexGenfv;
 292    exec->TexGeni = _mesa_TexGeni;
 293    exec->TexGeniv = _mesa_TexGeniv;
 294    exec->TexImage1D = _mesa_TexImage1D;
 295    exec->TexImage2D = _mesa_TexImage2D;
 296    exec->TexParameterf = _mesa_TexParameterf;
 297    exec->TexParameterfv = _mesa_TexParameterfv;
 298    exec->TexParameteri = _mesa_TexParameteri;
 299    exec->TexParameteriv = _mesa_TexParameteriv;
 300    exec->Translated = _mesa_Translated;
 301    exec->Translatef = _mesa_Translatef;
 302    exec->Viewport = _mesa_Viewport;
 303
 304    /* 1.1 */
 305    exec->AreTexturesResident = _mesa_AreTexturesResident;
 306    exec->AreTexturesResidentEXT = _mesa_AreTexturesResident;
 307    exec->BindTexture = _mesa_BindTexture;
 308    exec->ColorPointer = _mesa_ColorPointer;
 309    exec->CopyTexImage1D = _mesa_CopyTexImage1D;
 310    exec->CopyTexImage2D = _mesa_CopyTexImage2D;
 311    exec->CopyTexSubImage1D = _mesa_CopyTexSubImage1D;
 312    exec->CopyTexSubImage2D = _mesa_CopyTexSubImage2D;
 313    exec->DeleteTextures = _mesa_DeleteTextures;
 314    exec->DisableClientState = _mesa_DisableClientState;
 315    exec->EdgeFlagPointer = _mesa_EdgeFlagPointer;
 316    exec->EnableClientState = _mesa_EnableClientState;
 317    exec->GenTextures = _mesa_GenTextures;
 318    exec->GenTexturesEXT = _mesa_GenTextures;
 319    exec->GetPointerv = _mesa_GetPointerv;
 320    exec->IndexPointer = _mesa_IndexPointer;
 321    exec->InterleavedArrays = _mesa_InterleavedArrays;
 322    exec->IsTexture = _mesa_IsTexture;
 323    exec->IsTextureEXT = _mesa_IsTexture;
 324    exec->NormalPointer = _mesa_NormalPointer;
 325    exec->PopClientAttrib = _mesa_PopClientAttrib;
 326    exec->PrioritizeTextures = _mesa_PrioritizeTextures;
 327    exec->PushClientAttrib = _mesa_PushClientAttrib;
 328    exec->TexCoordPointer = _mesa_TexCoordPointer;
 329    exec->TexSubImage1D = _mesa_TexSubImage1D;
 330    exec->TexSubImage2D = _mesa_TexSubImage2D;
 331    exec->VertexPointer = _mesa_VertexPointer;
 332
 333    /* 1.2 */
 334    exec->CopyTexSubImage3D = _mesa_CopyTexSubImage3D;
 335    exec->TexImage3D = _mesa_TexImage3D;
 336    exec->TexSubImage3D = _mesa_TexSubImage3D;
 337
 338    /* OpenGL 1.2  GL_ARB_imaging */
 339    exec->BlendColor = _mesa_BlendColor;
 340    exec->BlendEquation = _mesa_BlendEquation;
 341    exec->ColorSubTable = _mesa_ColorSubTable;
 342    exec->ColorTable = _mesa_ColorTable;
 343    exec->ColorTableParameterfv = _mesa_ColorTableParameterfv;
 344    exec->ColorTableParameteriv = _mesa_ColorTableParameteriv;
 345    exec->ConvolutionFilter1D = _mesa_ConvolutionFilter1D;
 346    exec->ConvolutionFilter2D = _mesa_ConvolutionFilter2D;
 347    exec->ConvolutionParameterf = _mesa_ConvolutionParameterf;
 348    exec->ConvolutionParameterfv = _mesa_ConvolutionParameterfv;
 349    exec->ConvolutionParameteri = _mesa_ConvolutionParameteri;
 350    exec->ConvolutionParameteriv = _mesa_ConvolutionParameteriv;
 351    exec->CopyColorSubTable = _mesa_CopyColorSubTable;
 352    exec->CopyColorTable = _mesa_CopyColorTable;
 353    exec->CopyConvolutionFilter1D = _mesa_CopyConvolutionFilter1D;
 354    exec->CopyConvolutionFilter2D = _mesa_CopyConvolutionFilter2D;
 355    exec->GetColorTable = _mesa_GetColorTable;
 356    exec->GetColorTableEXT = _mesa_GetColorTable;
 357    exec->GetColorTableParameterfv = _mesa_GetColorTableParameterfv;
 358    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 359    exec->GetColorTableParameteriv = _mesa_GetColorTableParameteriv;
 360    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 361    exec->GetConvolutionFilter = _mesa_GetConvolutionFilter;
 362    exec->GetConvolutionFilterEXT = _mesa_GetConvolutionFilter;
 363    exec->GetConvolutionParameterfv = _mesa_GetConvolutionParameterfv;
 364    exec->GetConvolutionParameterfvEXT = _mesa_GetConvolutionParameterfv;
 365    exec->GetConvolutionParameteriv = _mesa_GetConvolutionParameteriv;
 366    exec->GetConvolutionParameterivEXT = _mesa_GetConvolutionParameteriv;
 367    exec->GetHistogram = _mesa_GetHistogram;
 368    exec->GetHistogramEXT = _mesa_GetHistogram;
 369    exec->GetHistogramParameterfv = _mesa_GetHistogramParameterfv;
 370    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 371    exec->GetHistogramParameteriv = _mesa_GetHistogramParameteriv;
 372    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 373    exec->GetMinmax = _mesa_GetMinmax;
 374    exec->GetMinmaxEXT = _mesa_GetMinmax;
 375    exec->GetMinmaxParameterfv = _mesa_GetMinmaxParameterfv;
 376    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 377    exec->GetMinmaxParameteriv = _mesa_GetMinmaxParameteriv;
 378    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 379    exec->GetSeparableFilter = _mesa_GetSeparableFilter;
 380    exec->GetSeparableFilterEXT = _mesa_GetSeparableFilter;
 381    exec->Histogram = _mesa_Histogram;
 382    exec->Minmax = _mesa_Minmax;
 383    exec->ResetHistogram = _mesa_ResetHistogram;
 384    exec->ResetMinmax = _mesa_ResetMinmax;
 385    exec->SeparableFilter2D = _mesa_SeparableFilter2D;
 386
 387    /* 2. GL_EXT_blend_color */
 388 #if 0
 389    exec->BlendColorEXT = _mesa_BlendColorEXT;
 390 #endif
 391
 392    /* 3. GL_EXT_polygon_offset */
 393    exec->PolygonOffsetEXT = _mesa_PolygonOffsetEXT;
 394
 395    /* 6. GL_EXT_texture3d */
 396 #if 0
 397    exec->CopyTexSubImage3DEXT = _mesa_CopyTexSubImage3D;
 398    exec->TexImage3DEXT = _mesa_TexImage3DEXT;
 399    exec->TexSubImage3DEXT = _mesa_TexSubImage3D;
 400 #endif
 401
 402    /* 11. GL_EXT_histogram */
 403    exec->GetHistogramEXT = _mesa_GetHistogram;
 404    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 405    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 406    exec->GetMinmaxEXT = _mesa_GetMinmax;
 407    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 408    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 409
 410    /* ?. GL_SGIX_pixel_texture */
 411    exec->PixelTexGenSGIX = _mesa_PixelTexGenSGIX;
 412
 413    /* 15. GL_SGIS_pixel_texture */
 414    exec->PixelTexGenParameteriSGIS = _mesa_PixelTexGenParameteriSGIS;
 415    exec->PixelTexGenParameterivSGIS = _mesa_PixelTexGenParameterivSGIS;
 416    exec->PixelTexGenParameterfSGIS = _mesa_PixelTexGenParameterfSGIS;
 417    exec->PixelTexGenParameterfvSGIS = _mesa_PixelTexGenParameterfvSGIS;
 418    exec->GetPixelTexGenParameterivSGIS = _mesa_GetPixelTexGenParameterivSGIS;
 419    exec->GetPixelTexGenParameterfvSGIS = _mesa_GetPixelTexGenParameterfvSGIS;
 420
 421    /* 30. GL_EXT_vertex_array */
 422    exec->ColorPointerEXT = _mesa_ColorPointerEXT;
 423    exec->EdgeFlagPointerEXT = _mesa_EdgeFlagPointerEXT;
 424    exec->IndexPointerEXT = _mesa_IndexPointerEXT;
 425    exec->NormalPointerEXT = _mesa_NormalPointerEXT;
 426    exec->TexCoordPointerEXT = _mesa_TexCoordPointerEXT;
 427    exec->VertexPointerEXT = _mesa_VertexPointerEXT;
 428
 429    /* 37. GL_EXT_blend_minmax */
 430 #if 0
 431    exec->BlendEquationEXT = _mesa_BlendEquationEXT;
 432 #endif
 433
 434    /* 54. GL_EXT_point_parameters */
 435    exec->PointParameterfEXT = _mesa_PointParameterfEXT;
 436    exec->PointParameterfvEXT = _mesa_PointParameterfvEXT;
 437
 438    /* 78. GL_EXT_paletted_texture */
 439 #if 0
 440    exec->ColorTableEXT = _mesa_ColorTableEXT;
 441    exec->ColorSubTableEXT = _mesa_ColorSubTableEXT;
 442 #endif
 443    exec->GetColorTableEXT = _mesa_GetColorTable;
 444    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 445    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 446
 447    /* 97. GL_EXT_compiled_vertex_array */
 448    exec->LockArraysEXT = _mesa_LockArraysEXT;
 449    exec->UnlockArraysEXT = _mesa_UnlockArraysEXT;
 450
 451    /* 148. GL_EXT_multi_draw_arrays */
 452    exec->MultiDrawArraysEXT = _mesa_MultiDrawArraysEXT;
 453    exec->MultiDrawElementsEXT = _mesa_MultiDrawElementsEXT;
 454
 455    /* 173. GL_INGR_blend_func_separate */
 456    exec->BlendFuncSeparateEXT = _mesa_BlendFuncSeparateEXT;
 457
 458    /* 196. GL_MESA_resize_buffers */
 459    exec->ResizeBuffersMESA = _mesa_ResizeBuffersMESA;
 460
 461    /* 197. GL_MESA_window_pos */
 462    exec->WindowPos2dMESA = _mesa_WindowPos2dMESA;
 463    exec->WindowPos2dvMESA = _mesa_WindowPos2dvMESA;
 464    exec->WindowPos2fMESA = _mesa_WindowPos2fMESA;
 465    exec->WindowPos2fvMESA = _mesa_WindowPos2fvMESA;
 466    exec->WindowPos2iMESA = _mesa_WindowPos2iMESA;
 467    exec->WindowPos2ivMESA = _mesa_WindowPos2ivMESA;
 468    exec->WindowPos2sMESA = _mesa_WindowPos2sMESA;
 469    exec->WindowPos2svMESA = _mesa_WindowPos2svMESA;
 470    exec->WindowPos3dMESA = _mesa_WindowPos3dMESA;
 471    exec->WindowPos3dvMESA = _mesa_WindowPos3dvMESA;
 472    exec->WindowPos3fMESA = _mesa_WindowPos3fMESA;
 473    exec->WindowPos3fvMESA = _mesa_WindowPos3fvMESA;
 474    exec->WindowPos3iMESA = _mesa_WindowPos3iMESA;
 475    exec->WindowPos3ivMESA = _mesa_WindowPos3ivMESA;
 476    exec->WindowPos3sMESA = _mesa_WindowPos3sMESA;
 477    exec->WindowPos3svMESA = _mesa_WindowPos3svMESA;
 478    exec->WindowPos4dMESA = _mesa_WindowPos4dMESA;
 479    exec->WindowPos4dvMESA = _mesa_WindowPos4dvMESA;
 480    exec->WindowPos4fMESA = _mesa_WindowPos4fMESA;
 481    exec->WindowPos4fvMESA = _mesa_WindowPos4fvMESA;
 482    exec->WindowPos4iMESA = _mesa_WindowPos4iMESA;
 483    exec->WindowPos4ivMESA = _mesa_WindowPos4ivMESA;
 484    exec->WindowPos4sMESA = _mesa_WindowPos4sMESA;
 485    exec->WindowPos4svMESA = _mesa_WindowPos4svMESA;
 486
 487    /* 233. GL_NV_vertex_program */
 488 #if FEATURE_NV_vertex_program
 489    exec->BindProgramNV = _mesa_BindProgramNV;
 490    exec->DeleteProgramsNV = _mesa_DeleteProgramsNV;
 491    exec->ExecuteProgramNV = _mesa_ExecuteProgramNV;
 492    exec->GenProgramsNV = _mesa_GenProgramsNV;
 493    exec->AreProgramsResidentNV = _mesa_AreProgramsResidentNV;
 494    exec->RequestResidentProgramsNV = _mesa_RequestResidentProgramsNV;
 495    exec->GetProgramParameterfvNV = _mesa_GetProgramParameterfvNV;
 496    exec->GetProgramParameterdvNV = _mesa_GetProgramParameterdvNV;
 497    exec->GetProgramivNV = _mesa_GetProgramivNV;
 498    exec->GetProgramStringNV = _mesa_GetProgramStringNV;
 499    exec->GetTrackMatrixivNV = _mesa_GetTrackMatrixivNV;
 500    exec->GetVertexAttribdvNV = _mesa_GetVertexAttribdvNV;
 501    exec->GetVertexAttribfvNV = _mesa_GetVertexAttribfvNV;
 502    exec->GetVertexAttribivNV = _mesa_GetVertexAttribivNV;
 503    exec->GetVertexAttribPointervNV = _mesa_GetVertexAttribPointervNV;
 504    exec->IsProgramNV = _mesa_IsProgramNV;
 505    exec->LoadProgramNV = _mesa_LoadProgramNV;
 506    exec->ProgramParameter4dNV = _mesa_ProgramParameter4dNV;
 507    exec->ProgramParameter4dvNV = _mesa_ProgramParameter4dvNV;
 508    exec->ProgramParameter4fNV = _mesa_ProgramParameter4fNV;
 509    exec->ProgramParameter4fvNV = _mesa_ProgramParameter4fvNV;
 510    exec->ProgramParameters4dvNV = _mesa_ProgramParameters4dvNV;
 511    exec->ProgramParameters4fvNV = _mesa_ProgramParameters4fvNV;
 512    exec->TrackMatrixNV = _mesa_TrackMatrixNV;
 513    exec->VertexAttribPointerNV = _mesa_VertexAttribPointerNV;
 514 #endif
 515
 516    /* 282. GL_NV_fragment_program */
 517 #if FEATURE_NV_fragment_program
 518    exec->ProgramNamedParameter4fNV = _mesa_ProgramNamedParameter4fNV;
 519    exec->ProgramNamedParameter4dNV = _mesa_ProgramNamedParameter4dNV;
 520    exec->ProgramNamedParameter4fvNV = _mesa_ProgramNamedParameter4fvNV;
 521    exec->ProgramNamedParameter4dvNV = _mesa_ProgramNamedParameter4dvNV;
 522    exec->GetProgramNamedParameterfvNV = _mesa_GetProgramNamedParameterfvNV;
 523    exec->GetProgramNamedParameterdvNV = _mesa_GetProgramNamedParameterdvNV;
 524    exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
 525    exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
 526    exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
 527    exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
 528    exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
 529    exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
 530 #endif
 531
 532    /* 262. GL_NV_point_sprite */
 533    exec->PointParameteriNV = _mesa_PointParameteriNV;
 534    exec->PointParameterivNV = _mesa_PointParameterivNV;
 535
 536    /* 268. GL_EXT_stencil_two_side */
 537    exec->ActiveStencilFaceEXT = _mesa_ActiveStencilFaceEXT;
 538
 539 #if 0
 540    /* ???. GL_EXT_depth_bounds_test */
 541    exec->DepthBoundsEXT = _mesa_DepthBoundsEXT;
 542 #endif
 543
 544    /* ARB 1. GL_ARB_multitexture */
 545    exec->ActiveTextureARB = _mesa_ActiveTextureARB;
 546    exec->ClientActiveTextureARB = _mesa_ClientActiveTextureARB;
 547
 548    /* ARB 3. GL_ARB_transpose_matrix */
 549    exec->LoadTransposeMatrixdARB = _mesa_LoadTransposeMatrixdARB;
 550    exec->LoadTransposeMatrixfARB = _mesa_LoadTransposeMatrixfARB;
 551    exec->MultTransposeMatrixdARB = _mesa_MultTransposeMatrixdARB;
 552    exec->MultTransposeMatrixfARB = _mesa_MultTransposeMatrixfARB;
 553
 554    /* ARB 5. GL_ARB_multisample */
 555    exec->SampleCoverageARB = _mesa_SampleCoverageARB;
 556
 557    /* ARB 12. GL_ARB_texture_compression */
 558    exec->CompressedTexImage3DARB = _mesa_CompressedTexImage3DARB;
 559    exec->CompressedTexImage2DARB = _mesa_CompressedTexImage2DARB;
 560    exec->CompressedTexImage1DARB = _mesa_CompressedTexImage1DARB;
 561    exec->CompressedTexSubImage3DARB = _mesa_CompressedTexSubImage3DARB;
 562    exec->CompressedTexSubImage2DARB = _mesa_CompressedTexSubImage2DARB;
 563    exec->CompressedTexSubImage1DARB = _mesa_CompressedTexSubImage1DARB;
 564    exec->GetCompressedTexImageARB = _mesa_GetCompressedTexImageARB;
 565
 566    /* ARB 14. GL_ARB_point_parameters */
 567    /* reuse EXT_point_parameters functions */
 568
 569    /* ARB 26. GL_ARB_vertex_program */
 570    /* ARB 27. GL_ARB_fragment_program */
 571 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
 572    /* glVertexAttrib1sARB aliases glVertexAttrib1sNV */
 573    /* glVertexAttrib1fARB aliases glVertexAttrib1fNV */
 574    /* glVertexAttrib1dARB aliases glVertexAttrib1dNV */
 575    /* glVertexAttrib2sARB aliases glVertexAttrib2sNV */
 576    /* glVertexAttrib2fARB aliases glVertexAttrib2fNV */
 577    /* glVertexAttrib2dARB aliases glVertexAttrib2dNV */
 578    /* glVertexAttrib3sARB aliases glVertexAttrib3sNV */
 579    /* glVertexAttrib3fARB aliases glVertexAttrib3fNV */
 580    /* glVertexAttrib3dARB aliases glVertexAttrib3dNV */
 581    /* glVertexAttrib4sARB aliases glVertexAttrib4sNV */
 582    /* glVertexAttrib4fARB aliases glVertexAttrib4fNV */
 583    /* glVertexAttrib4dARB aliases glVertexAttrib4dNV */
 584    /* glVertexAttrib4NubARB aliases glVertexAttrib4NubNV */
 585    /* glVertexAttrib1svARB aliases glVertexAttrib1svNV */
 586    /* glVertexAttrib1fvARB aliases glVertexAttrib1fvNV */
 587    /* glVertexAttrib1dvARB aliases glVertexAttrib1dvNV */
 588    /* glVertexAttrib2svARB aliases glVertexAttrib2svNV */
 589    /* glVertexAttrib2fvARB aliases glVertexAttrib2fvNV */
 590    /* glVertexAttrib2dvARB aliases glVertexAttrib2dvNV */
 591    /* glVertexAttrib3svARB aliases glVertexAttrib3svNV */
 592    /* glVertexAttrib3fvARB aliases glVertexAttrib3fvNV */
 593    /* glVertexAttrib3dvARB aliases glVertexAttrib3dvNV */
 594    /* glVertexAttrib4svARB aliases glVertexAttrib4svNV */
 595    /* glVertexAttrib4fvARB aliases glVertexAttrib4fvNV */
 596    /* glVertexAttrib4dvARB aliases glVertexAttrib4dvNV */
 597    /* glVertexAttrib4NubvARB aliases glVertexAttrib4NubvNV */
 598    exec->VertexAttrib4bvARB = _mesa_VertexAttrib4bvARB;
 599    exec->VertexAttrib4ivARB = _mesa_VertexAttrib4ivARB;
 600    exec->VertexAttrib4ubvARB = _mesa_VertexAttrib4ubvARB;
 601    exec->VertexAttrib4usvARB = _mesa_VertexAttrib4usvARB;
 602    exec->VertexAttrib4uivARB = _mesa_VertexAttrib4uivARB;
 603    exec->VertexAttrib4NbvARB = _mesa_VertexAttrib4NbvARB;
 604    exec->VertexAttrib4NsvARB = _mesa_VertexAttrib4NsvARB;
 605    exec->VertexAttrib4NivARB = _mesa_VertexAttrib4NivARB;
 606    exec->VertexAttrib4NusvARB = _mesa_VertexAttrib4NusvARB;
 607    exec->VertexAttrib4NuivARB = _mesa_VertexAttrib4NuivARB;
 608    exec->VertexAttribPointerARB = _mesa_VertexAttribPointerARB;
 609    exec->EnableVertexAttribArrayARB = _mesa_EnableVertexAttribArrayARB;
 610    exec->DisableVertexAttribArrayARB = _mesa_DisableVertexAttribArrayARB;
 611    exec->ProgramStringARB = _mesa_ProgramStringARB;
 612    /* glBindProgramARB aliases glBindProgramNV */
 613    /* glDeleteProgramsARB aliases glDeleteProgramsNV */
 614    /* glGenProgramsARB aliases glGenProgramsNV */
 615    /* glIsProgramARB aliases glIsProgramNV */
 616    /* glGetVertexAttribdvARB aliases glGetVertexAttribdvNV */
 617    /* glGetVertexAttribfvARB aliases glGetVertexAttribfvNV */
 618    /* glGetVertexAttribivARB aliases glGetVertexAttribivNV */
 619    /* glGetVertexAttribPointervARB aliases glGetVertexAttribPointervNV */
 620    exec->ProgramEnvParameter4dARB = _mesa_ProgramEnvParameter4dARB;
 621    exec->ProgramEnvParameter4dvARB = _mesa_ProgramEnvParameter4dvARB;
 622    exec->ProgramEnvParameter4fARB = _mesa_ProgramEnvParameter4fARB;
 623    exec->ProgramEnvParameter4fvARB = _mesa_ProgramEnvParameter4fvARB;
 624    exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
 625    exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
 626    exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
 627    exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
 628    exec->GetProgramEnvParameterdvARB = _mesa_GetProgramEnvParameterdvARB;
 629    exec->GetProgramEnvParameterfvARB = _mesa_GetProgramEnvParameterfvARB;
 630    exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
 631    exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
 632    exec->GetProgramivARB = _mesa_GetProgramivARB;
 633    exec->GetProgramStringARB = _mesa_GetProgramStringARB;
 634 #endif
 635
 636    /* ARB 28. GL_ARB_vertex_buffer_object */
 637 #if FEATURE_ARB_vertex_buffer_object
 638    exec->BindBufferARB = _mesa_BindBufferARB;
 639    exec->BufferDataARB = _mesa_BufferDataARB;
 640    exec->BufferSubDataARB = _mesa_BufferSubDataARB;
 641    exec->DeleteBuffersARB = _mesa_DeleteBuffersARB;
 642    exec->GenBuffersARB = _mesa_GenBuffersARB;
 643    exec->GetBufferParameterivARB = _mesa_GetBufferParameterivARB;
 644    exec->GetBufferPointervARB = _mesa_GetBufferPointervARB;
 645    exec->GetBufferSubDataARB = _mesa_GetBufferSubDataARB;
 646    exec->IsBufferARB = _mesa_IsBufferARB;
 647    exec->MapBufferARB = _mesa_MapBufferARB;
 648    exec->UnmapBufferARB = _mesa_UnmapBufferARB;
 649 #endif
 650 }
 651
 652
 653
 654 /**********************************************************************/
 655 /*****                   State update logic                       *****/
 656 /**********************************************************************/
 657
 658
 659 /*
 660  * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
 661  * in ctx->_TriangleCaps if needed.
 662  */
 663 static void
 664 update_polygon( GLcontext *ctx )
 665 {
 666    ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
 667
 668    if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
 669       ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
 670
 671    /* Any Polygon offsets enabled? */
 672    if (ctx->Polygon.OffsetPoint ||
 673        ctx->Polygon.OffsetLine ||
 674        ctx->Polygon.OffsetFill) {
 675       ctx->_TriangleCaps |= DD_TRI_OFFSET;
 676    }
 677 }
 678
 679 static void
 680 calculate_model_project_matrix( GLcontext *ctx )
 681 {
 682    _math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
 683                             ctx->ProjectionMatrixStack.Top,
 684                             ctx->ModelviewMatrixStack.Top );
 685
 686    _math_matrix_analyse( &ctx->_ModelProjectMatrix );
 687 }
 688
 689 static void
 690 update_modelview_scale( GLcontext *ctx )
 691 {
 692    ctx->_ModelViewInvScale = 1.0F;
 693    if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_UNIFORM_SCALE |
 694                                MAT_FLAG_GENERAL_SCALE |
 695                                MAT_FLAG_GENERAL_3D |
 696                                MAT_FLAG_GENERAL) ) {
 697       const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
 698       GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
 699       if (f < 1e-12) f = 1.0;
 700       if (ctx->_NeedEyeCoords)
 701          ctx->_ModelViewInvScale = 1.0F / SQRTF(f);
 702       else
 703          ctx->_ModelViewInvScale = SQRTF(f);
 704    }
 705 }
 706
 707
 708 /* Bring uptodate any state that relies on _NeedEyeCoords.
 709  */
 710 static void
 711 update_tnl_spaces( GLcontext *ctx, GLuint oldneedeyecoords )
 712 {
 713    /* Check if the truth-value interpretations of the bitfields have
 714     * changed:
 715     */
 716    if ((oldneedeyecoords == 0) != (ctx->_NeedEyeCoords == 0)) {
 717       /* Recalculate all state that depends on _NeedEyeCoords.
 718        */
 719       update_modelview_scale(ctx);
 720       _mesa_compute_light_positions( ctx );
 721
 722       if (ctx->Driver.LightingSpaceChange)
 723          ctx->Driver.LightingSpaceChange( ctx );
 724    }
 725    else {
 726       GLuint new_state = ctx->NewState;
 727
 728       /* Recalculate that same state only if it has been invalidated
 729        * by other statechanges.
 730        */
 731       if (new_state & _NEW_MODELVIEW)
 732          update_modelview_scale(ctx);
 733
 734       if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW))
 735          _mesa_compute_light_positions( ctx );
 736    }
 737 }
 738
 739
 740 static void
 741 update_drawbuffer( GLcontext *ctx )
 742 {
 743    ctx->DrawBuffer->_Xmin = 0;
 744    ctx->DrawBuffer->_Ymin = 0;
 745    ctx->DrawBuffer->_Xmax = ctx->DrawBuffer->Width;
 746    ctx->DrawBuffer->_Ymax = ctx->DrawBuffer->Height;
 747    if (ctx->Scissor.Enabled) {
 748       if (ctx->Scissor.X > ctx->DrawBuffer->_Xmin) {
 749          ctx->DrawBuffer->_Xmin = ctx->Scissor.X;
 750       }
 751       if (ctx->Scissor.Y > ctx->DrawBuffer->_Ymin) {
 752          ctx->DrawBuffer->_Ymin = ctx->Scissor.Y;
 753       }
 754       if (ctx->Scissor.X + ctx->Scissor.Width < ctx->DrawBuffer->_Xmax) {
 755          ctx->DrawBuffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
 756       }
 757       if (ctx->Scissor.Y + ctx->Scissor.Height < ctx->DrawBuffer->_Ymax) {
 758          ctx->DrawBuffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
 759       }
 760    }
 761 }
 762
 763
 764 /* NOTE: This routine references Tranform attribute values to compute
 765  * userclip positions in clip space, but is only called on
 766  * _NEW_PROJECTION.  The _mesa_ClipPlane() function keeps these values
 767  * up to date across changes to the Transform attributes.
 768  */
 769 static void
 770 update_projection( GLcontext *ctx )
 771 {
 772    _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
 773
 774    /* Recompute clip plane positions in clipspace.  This is also done
 775     * in _mesa_ClipPlane().
 776     */
 777    if (ctx->Transform.ClipPlanesEnabled) {
 778       GLuint p;
 779       for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
 780          if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
 781             _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
 782                                  ctx->Transform.EyeUserPlane[p],
 783                                  ctx->ProjectionMatrixStack.Top->inv );
 784          }
 785       }
 786    }
 787 }
 788
 789
 790 /*
 791  * Return a bitmask of IMAGE_*_BIT flags which to indicate which
 792  * pixel transfer operations are enabled.
 793  */
 794 static void
 795 update_image_transfer_state(GLcontext *ctx)
 796 {
 797    GLuint mask = 0;
 798
 799    if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||
 800        ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
 801        ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||
 802        ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
 803       mask |= IMAGE_SCALE_BIAS_BIT;
 804
 805    if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
 806       mask |= IMAGE_SHIFT_OFFSET_BIT;
 807
 808    if (ctx->Pixel.MapColorFlag)
 809       mask |= IMAGE_MAP_COLOR_BIT;
 810
 811    if (ctx->Pixel.ColorTableEnabled)
 812       mask |= IMAGE_COLOR_TABLE_BIT;
 813
 814    if (ctx->Pixel.Convolution1DEnabled ||
 815        ctx->Pixel.Convolution2DEnabled ||
 816        ctx->Pixel.Separable2DEnabled) {
 817       mask |= IMAGE_CONVOLUTION_BIT;
 818       if (ctx->Pixel.PostConvolutionScale[0] != 1.0F ||
 819           ctx->Pixel.PostConvolutionScale[1] != 1.0F ||
 820           ctx->Pixel.PostConvolutionScale[2] != 1.0F ||
 821           ctx->Pixel.PostConvolutionScale[3] != 1.0F ||
 822           ctx->Pixel.PostConvolutionBias[0] != 0.0F ||
 823           ctx->Pixel.PostConvolutionBias[1] != 0.0F ||
 824           ctx->Pixel.PostConvolutionBias[2] != 0.0F ||
 825           ctx->Pixel.PostConvolutionBias[3] != 0.0F) {
 826          mask |= IMAGE_POST_CONVOLUTION_SCALE_BIAS;
 827       }
 828    }
 829
 830    if (ctx->Pixel.PostConvolutionColorTableEnabled)
 831       mask |= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT;
 832
 833    if (ctx->ColorMatrixStack.Top->type != MATRIX_IDENTITY ||
 834        ctx->Pixel.PostColorMatrixScale[0] != 1.0F ||
 835        ctx->Pixel.PostColorMatrixBias[0]  != 0.0F ||
 836        ctx->Pixel.PostColorMatrixScale[1] != 1.0F ||
 837        ctx->Pixel.PostColorMatrixBias[1]  != 0.0F ||
 838        ctx->Pixel.PostColorMatrixScale[2] != 1.0F ||
 839        ctx->Pixel.PostColorMatrixBias[2]  != 0.0F ||
 840        ctx->Pixel.PostColorMatrixScale[3] != 1.0F ||
 841        ctx->Pixel.PostColorMatrixBias[3]  != 0.0F)
 842       mask |= IMAGE_COLOR_MATRIX_BIT;
 843
 844    if (ctx->Pixel.PostColorMatrixColorTableEnabled)
 845       mask |= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT;
 846
 847    if (ctx->Pixel.HistogramEnabled)
 848       mask |= IMAGE_HISTOGRAM_BIT;
 849
 850    if (ctx->Pixel.MinMaxEnabled)
 851       mask |= IMAGE_MIN_MAX_BIT;
 852
 853    ctx->_ImageTransferState = mask;
 854 }
 855
 856
 857
 858
 859 /* Note: This routine refers to derived texture attribute values to
 860  * compute the ENABLE_TEXMAT flags, but is only called on
 861  * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
 862  * flags are updated by _mesa_update_textures(), below.
 863  *
 864  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 865  * will be computed twice.
 866  */
 867 static void
 868 update_texture_matrices( GLcontext *ctx )
 869 {
 870    GLuint i;
 871
 872    ctx->Texture._TexMatEnabled = 0;
 873
 874    for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
 875       if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
 876          _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
 877
 878          if (ctx->Texture.Unit[i]._ReallyEnabled &&
 879              ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
 880             ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
 881
 882          if (ctx->Driver.TextureMatrix)
 883             ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
 884       }
 885    }
 886 }
 887
 888
 889 /* Note: This routine refers to derived texture matrix values to
 890  * compute the ENABLE_TEXMAT flags, but is only called on
 891  * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
 892  * flags are updated by _mesa_update_texture_matrices, above.
 893  *
 894  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 895  * will be computed twice.
 896  */
 897 static void
 898 update_texture_state( GLcontext *ctx )
 899 {
 900    GLuint unit;
 901
 902    ctx->Texture._EnabledUnits = 0;
 903    ctx->Texture._GenFlags = 0;
 904    ctx->_NeedNormals &= ~NEED_NORMALS_TEXGEN;
 905    ctx->_NeedEyeCoords &= ~NEED_EYE_TEXGEN;
 906    ctx->Texture._TexMatEnabled = 0;
 907    ctx->Texture._TexGenEnabled = 0;
 908
 909    /* Update texture unit state.
 910     */
 911    for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
 912       struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 913       GLuint enableBits;
 914
 915       texUnit->_ReallyEnabled = 0;
 916       texUnit->_GenFlags = 0;
 917
 918       /* Get the bitmask of texture enables */
 919       if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
 920          enableBits = ctx->FragmentProgram.Current->TexturesUsed[unit];
 921       }
 922       else {
 923          if (!texUnit->Enabled)
 924             continue;
 925          enableBits = texUnit->Enabled;
 926       }
 927
 928       /* Look for the highest-priority texture target that's enabled and
 929        * complete.  That's the one we'll use for texturing.  If we're using
 930        * a fragment program we're guaranteed that bitcount(enabledBits) <= 1.
 931        */
 932       if (enableBits & TEXTURE_CUBE_BIT) {
 933          struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
 934          if (!texObj->Complete) {
 935             _mesa_test_texobj_completeness(ctx, texObj);
 936          }
 937          if (texObj->Complete) {
 938             texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
 939             texUnit->_Current = texObj;
 940          }
 941       }
 942
 943       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_3D_BIT)) {
 944          struct gl_texture_object *texObj = texUnit->Current3D;
 945          if (!texObj->Complete) {
 946             _mesa_test_texobj_completeness(ctx, texObj);
 947          }
 948          if (texObj->Complete) {
 949             texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
 950             texUnit->_Current = texObj;
 951          }
 952       }
 953
 954       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_RECT_BIT)) {
 955          struct gl_texture_object *texObj = texUnit->CurrentRect;
 956          if (!texObj->Complete) {
 957             _mesa_test_texobj_completeness(ctx, texObj);
 958          }
 959          if (texObj->Complete) {
 960             texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
 961             texUnit->_Current = texObj;
 962          }
 963       }
 964
 965       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_2D_BIT)) {
 966          struct gl_texture_object *texObj = texUnit->Current2D;
 967          if (!texObj->Complete) {
 968             _mesa_test_texobj_completeness(ctx, texObj);
 969          }
 970          if (texObj->Complete) {
 971             texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
 972             texUnit->_Current = texObj;
 973          }
 974       }
 975
 976       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_1D_BIT)) {
 977          struct gl_texture_object *texObj = texUnit->Current1D;
 978          if (!texObj->Complete) {
 979             _mesa_test_texobj_completeness(ctx, texObj);
 980          }
 981          if (texObj->Complete) {
 982             texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
 983             texUnit->_Current = texObj;
 984          }
 985       }
 986
 987       if (!texUnit->_ReallyEnabled) {
 988          texUnit->_Current = NULL;
 989          continue;
 990       }
 991
 992       if (texUnit->_ReallyEnabled)
 993          ctx->Texture._EnabledUnits |= (1 << unit);
 994
 995       if (texUnit->TexGenEnabled) {
 996          if (texUnit->TexGenEnabled & S_BIT) {
 997             texUnit->_GenFlags |= texUnit->_GenBitS;
 998          }
 999          if (texUnit->TexGenEnabled & T_BIT) {
1000             texUnit->_GenFlags |= texUnit->_GenBitT;
1001          }
1002          if (texUnit->TexGenEnabled & Q_BIT) {
1003             texUnit->_GenFlags |= texUnit->_GenBitQ;
1004          }
1005          if (texUnit->TexGenEnabled & R_BIT) {
1006             texUnit->_GenFlags |= texUnit->_GenBitR;
1007          }
1008
1009          ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
1010          ctx->Texture._GenFlags |= texUnit->_GenFlags;
1011       }
1012
1013       if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
1014          ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
1015    }
1016
1017    if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS) {
1018       ctx->_NeedNormals |= NEED_NORMALS_TEXGEN;
1019       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
1020    }
1021
1022    if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) {
1023       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
1024    }
1025
1026    ctx->Texture._EnabledCoordUnits = ctx->Texture._EnabledUnits;
1027    /* Fragment programs may need texture coordinates but not the
1028     * corresponding texture images.
1029     */
1030    if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
1031       ctx->Texture._EnabledCoordUnits |=
1032          (ctx->FragmentProgram.Current->InputsRead >> FRAG_ATTRIB_TEX0);
1033    }
1034 }
1035
1036
1037 /*
1038  * Update items which depend on vertex/fragment programs.
1039  */
1040 static void
1041 update_program( GLcontext *ctx )
1042 {
1043    if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
1044       if (ctx->FragmentProgram.Current->InputsRead & (1 << FRAG_ATTRIB_COL1))
1045          ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
1046    }
1047 }
1048
1049
1050 /*
1051  * If ctx->NewState is non-zero then this function MUST be called before
1052  * rendering any primitive.  Basically, function pointers and miscellaneous
1053  * flags are updated to reflect the current state of the state machine.
1054  *
1055  * The above constraint is now maintained largely by the two Exec
1056  * dispatch tables, which trigger the appropriate flush on transition
1057  * between State and Geometry modes.
1058  *
1059  * Special care is taken with the derived value _NeedEyeCoords.  This
1060  * is a bitflag which is updated with information from a number of
1061  * attribute groups (MODELVIEW, LIGHT, TEXTURE).  A lot of derived
1062  * state references this value, and must be treated with care to
1063  * ensure that updates are done correctly.  All state dependent on
1064  * _NeedEyeCoords is calculated from within _mesa_update_tnl_spaces(),
1065  * and from nowhere else.
1066  */
1067 void _mesa_update_state( GLcontext *ctx )
1068 {
1069    const GLuint new_state = ctx->NewState;
1070    const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
1071
1072    if (MESA_VERBOSE & VERBOSE_STATE)
1073       _mesa_print_state("_mesa_update_state", new_state);
1074
1075    if (new_state & _NEW_MODELVIEW)
1076       _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1077
1078    if (new_state & _NEW_PROJECTION)
1079       update_projection( ctx );
1080
1081    if (new_state & _NEW_TEXTURE_MATRIX)
1082       update_texture_matrices( ctx );
1083
1084    if (new_state & _NEW_COLOR_MATRIX)
1085       _math_matrix_analyse( ctx->ColorMatrixStack.Top );
1086
1087    /* References ColorMatrix.type (derived above).
1088     */
1089    if (new_state & _IMAGE_NEW_TRANSFER_STATE)
1090       update_image_transfer_state(ctx);
1091
1092    /* Contributes to NeedEyeCoords, NeedNormals.
1093     */
1094    if (new_state & _NEW_TEXTURE)
1095       update_texture_state( ctx );
1096
1097    if (new_state & (_NEW_BUFFERS|_NEW_SCISSOR))
1098       update_drawbuffer( ctx );
1099
1100    if (new_state & _NEW_POLYGON)
1101       update_polygon( ctx );
1102
1103    /* Contributes to NeedEyeCoords, NeedNormals.
1104     */
1105    if (new_state & _NEW_LIGHT)
1106       _mesa_update_lighting( ctx );
1107
1108    /* We can light in object space if the modelview matrix preserves
1109     * lengths and relative angles.
1110     */
1111    if (new_state & (_NEW_MODELVIEW|_NEW_LIGHT)) {
1112       ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT_MODELVIEW;
1113       if (ctx->Light.Enabled &&
1114           !TEST_MAT_FLAGS( ctx->ModelviewMatrixStack.Top, MAT_FLAGS_LENGTH_PRESERVING))
1115             ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
1116    }
1117
1118    if (new_state & _NEW_PROGRAM)
1119       update_program( ctx );
1120
1121 #if 0
1122    /* XXX this is a bit of a hack.  We should be checking elsewhere if
1123     * vertex program mode is enabled.  We set _NeedEyeCoords to zero to
1124     * ensure that the combined modelview/projection matrix is computed
1125     * in calculate_model_project_matrix().
1126     */
1127    if (ctx->VertexProgram.Enabled)
1128       ctx->_NeedEyeCoords = 0;
1129    /* KW: it's now always computed.
1130     */
1131 #endif
1132
1133    /* Keep ModelviewProject uptodate always to allow tnl
1134     * implementations that go model->clip even when eye is required.
1135     */
1136    if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
1137       calculate_model_project_matrix(ctx);
1138
1139    /* ctx->_NeedEyeCoords is now uptodate.
1140     *
1141     * If the truth value of this variable has changed, update for the
1142     * new lighting space and recompute the positions of lights and the
1143     * normal transform.
1144     *
1145     * If the lighting space hasn't changed, may still need to recompute
1146     * light positions & normal transforms for other reasons.
1147     */
1148    if (new_state & (_NEW_MODELVIEW |
1149                     _NEW_LIGHT |
1150                     _MESA_NEW_NEED_EYE_COORDS))
1151       update_tnl_spaces( ctx, oldneedeyecoords );
1152
1153    /*
1154     * Here the driver sets up all the ctx->Driver function pointers
1155     * to it's specific, private functions, and performs any
1156     * internal state management necessary, including invalidating
1157     * state of active modules.
1158     *
1159     * Set ctx->NewState to zero to avoid recursion if
1160     * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
1161     */
1162    ctx->NewState = 0;
1163    ctx->Driver.UpdateState(ctx, new_state);
1164    ctx->Array.NewState = 0;
1165
1166    /* At this point we can do some assertions to be sure the required
1167     * device driver function pointers are all initialized.
1168     */
1169    ASSERT(ctx->Driver.GetString);
1170    ASSERT(ctx->Driver.UpdateState);
1171    ASSERT(ctx->Driver.Clear);
1172    ASSERT(ctx->Driver.GetBufferSize);
1173    if (ctx->Visual.accumRedBits > 0) {
1174       ASSERT(ctx->Driver.Accum);
1175    }
1176    ASSERT(ctx->Driver.DrawPixels);
1177    ASSERT(ctx->Driver.ReadPixels);
1178    ASSERT(ctx->Driver.CopyPixels);
1179    ASSERT(ctx->Driver.Bitmap);
1180    ASSERT(ctx->Driver.ResizeBuffers);
1181    ASSERT(ctx->Driver.TexImage1D);
1182    ASSERT(ctx->Driver.TexImage2D);
1183    ASSERT(ctx->Driver.TexImage3D);
1184    ASSERT(ctx->Driver.TexSubImage1D);
1185    ASSERT(ctx->Driver.TexSubImage2D);
1186    ASSERT(ctx->Driver.TexSubImage3D);
1187    ASSERT(ctx->Driver.CopyTexImage1D);
1188    ASSERT(ctx->Driver.CopyTexImage2D);
1189    ASSERT(ctx->Driver.CopyTexSubImage1D);
1190    ASSERT(ctx->Driver.CopyTexSubImage2D);
1191    ASSERT(ctx->Driver.CopyTexSubImage3D);
1192    if (ctx->Extensions.ARB_texture_compression) {
1193 #if 0  /* HW drivers need these, but not SW rasterizers */
1194       ASSERT(ctx->Driver.CompressedTexImage1D);
1195       ASSERT(ctx->Driver.CompressedTexImage2D);
1196       ASSERT(ctx->Driver.CompressedTexImage3D);
1197       ASSERT(ctx->Driver.CompressedTexSubImage1D);
1198       ASSERT(ctx->Driver.CompressedTexSubImage2D);
1199       ASSERT(ctx->Driver.CompressedTexSubImage3D);
1200 #endif
1201    }
1202 }
1203
1204 /* Is this helpful?
1205  */
1206 void
1207 _mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag )
1208 {
1209    if (flag)
1210       ctx->_NeedEyeCoords &= ~NEED_EYE_DRIVER;
1211    else
1212       ctx->_NeedEyeCoords |= NEED_EYE_DRIVER;
1213
1214    ctx->NewState |= _NEW_POINT; /* one of the bits from
1215                                  * _MESA_NEW_NEED_EYE_COORDS.
1216                                  */
1217 }