src/mesa/main/state.c

   1 /* $Id: state.c,v 1.103 2003/04/08 02:27:16 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 #include "attrib.h"
  38 #include "blend.h"
  39 #if FEATURE_ARB_vertex_buffer_object
  40 #include "bufferobj.h"
  41 #endif
  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 "imports.h"
  58 #include "light.h"
  59 #include "lines.h"
  60 #include "matrix.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 #if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
  73 #include "nvprogram.h"
  74 #endif
  75 #if FEATURE_NV_fragment_program
  76 #include "nvfragprog.h"
  77 #endif
  78
  79 #include "math/m_matrix.h"
  80 #include "math/m_xform.h"
  81
  82
  83 static int
  84 generic_noop(void)
  85 {
  86 #ifdef DEBUG
  87    _mesa_problem(NULL, "User called no-op dispatch function");
  88 #endif
  89    return 0;
  90 }
  91
  92
  93 /*
  94  * Set all pointers in the given dispatch table to point to a
  95  * generic no-op function.
  96  */
  97 void
  98 _mesa_init_no_op_table(struct _glapi_table *table, GLuint tableSize)
  99 {
 100    GLuint i;
 101    void **dispatch = (void **) table;
 102    for (i = 0; i < tableSize; i++) {
 103       dispatch[i] = (void *) generic_noop;
 104    }
 105 }
 106
 107
 108
 109 /*
 110  * Initialize the given dispatch table with pointers to Mesa's
 111  * immediate-mode commands.
 112  *
 113  * Pointers to begin/end object commands and a few others
 114  * are provided via the vtxfmt interface elsewhere.
 115  */
 116 void
 117 _mesa_init_exec_table(struct _glapi_table *exec, GLuint tableSize)
 118 {
 119    /* first initialize all dispatch slots to no-op */
 120    _mesa_init_no_op_table(exec, tableSize);
 121
 122    _mesa_loopback_init_api_table( exec, GL_TRUE );
 123
 124    /* load the dispatch slots we understand */
 125    exec->Accum = _mesa_Accum;
 126    exec->AlphaFunc = _mesa_AlphaFunc;
 127    exec->Bitmap = _mesa_Bitmap;
 128    exec->BlendFunc = _mesa_BlendFunc;
 129    exec->CallList = _mesa_CallList;
 130    exec->CallLists = _mesa_CallLists;
 131    exec->Clear = _mesa_Clear;
 132    exec->ClearAccum = _mesa_ClearAccum;
 133    exec->ClearColor = _mesa_ClearColor;
 134    exec->ClearDepth = _mesa_ClearDepth;
 135    exec->ClearIndex = _mesa_ClearIndex;
 136    exec->ClearStencil = _mesa_ClearStencil;
 137    exec->ClipPlane = _mesa_ClipPlane;
 138    exec->ColorMask = _mesa_ColorMask;
 139    exec->ColorMaterial = _mesa_ColorMaterial;
 140    exec->CopyPixels = _mesa_CopyPixels;
 141    exec->CullFace = _mesa_CullFace;
 142    exec->DeleteLists = _mesa_DeleteLists;
 143    exec->DepthFunc = _mesa_DepthFunc;
 144    exec->DepthMask = _mesa_DepthMask;
 145    exec->DepthRange = _mesa_DepthRange;
 146    exec->Disable = _mesa_Disable;
 147    exec->DrawBuffer = _mesa_DrawBuffer;
 148    exec->DrawPixels = _mesa_DrawPixels;
 149    exec->Enable = _mesa_Enable;
 150    exec->EndList = _mesa_EndList;
 151    exec->FeedbackBuffer = _mesa_FeedbackBuffer;
 152    exec->Finish = _mesa_Finish;
 153    exec->Flush = _mesa_Flush;
 154    exec->FogCoordPointerEXT = _mesa_FogCoordPointerEXT;
 155    exec->Fogf = _mesa_Fogf;
 156    exec->Fogfv = _mesa_Fogfv;
 157    exec->Fogi = _mesa_Fogi;
 158    exec->Fogiv = _mesa_Fogiv;
 159    exec->FrontFace = _mesa_FrontFace;
 160    exec->Frustum = _mesa_Frustum;
 161    exec->GenLists = _mesa_GenLists;
 162    exec->GetBooleanv = _mesa_GetBooleanv;
 163    exec->GetClipPlane = _mesa_GetClipPlane;
 164    exec->GetDoublev = _mesa_GetDoublev;
 165    exec->GetError = _mesa_GetError;
 166    exec->GetFloatv = _mesa_GetFloatv;
 167    exec->GetIntegerv = _mesa_GetIntegerv;
 168    exec->GetLightfv = _mesa_GetLightfv;
 169    exec->GetLightiv = _mesa_GetLightiv;
 170    exec->GetMapdv = _mesa_GetMapdv;
 171    exec->GetMapfv = _mesa_GetMapfv;
 172    exec->GetMapiv = _mesa_GetMapiv;
 173    exec->GetMaterialfv = _mesa_GetMaterialfv;
 174    exec->GetMaterialiv = _mesa_GetMaterialiv;
 175    exec->GetPixelMapfv = _mesa_GetPixelMapfv;
 176    exec->GetPixelMapuiv = _mesa_GetPixelMapuiv;
 177    exec->GetPixelMapusv = _mesa_GetPixelMapusv;
 178    exec->GetPolygonStipple = _mesa_GetPolygonStipple;
 179    exec->GetString = _mesa_GetString;
 180    exec->GetTexEnvfv = _mesa_GetTexEnvfv;
 181    exec->GetTexEnviv = _mesa_GetTexEnviv;
 182    exec->GetTexGendv = _mesa_GetTexGendv;
 183    exec->GetTexGenfv = _mesa_GetTexGenfv;
 184    exec->GetTexGeniv = _mesa_GetTexGeniv;
 185    exec->GetTexImage = _mesa_GetTexImage;
 186    exec->GetTexLevelParameterfv = _mesa_GetTexLevelParameterfv;
 187    exec->GetTexLevelParameteriv = _mesa_GetTexLevelParameteriv;
 188    exec->GetTexParameterfv = _mesa_GetTexParameterfv;
 189    exec->GetTexParameteriv = _mesa_GetTexParameteriv;
 190    exec->Hint = _mesa_Hint;
 191    exec->IndexMask = _mesa_IndexMask;
 192    exec->InitNames = _mesa_InitNames;
 193    exec->IsEnabled = _mesa_IsEnabled;
 194    exec->IsList = _mesa_IsList;
 195    exec->LightModelf = _mesa_LightModelf;
 196    exec->LightModelfv = _mesa_LightModelfv;
 197    exec->LightModeli = _mesa_LightModeli;
 198    exec->LightModeliv = _mesa_LightModeliv;
 199    exec->Lightf = _mesa_Lightf;
 200    exec->Lightfv = _mesa_Lightfv;
 201    exec->Lighti = _mesa_Lighti;
 202    exec->Lightiv = _mesa_Lightiv;
 203    exec->LineStipple = _mesa_LineStipple;
 204    exec->LineWidth = _mesa_LineWidth;
 205    exec->ListBase = _mesa_ListBase;
 206    exec->LoadIdentity = _mesa_LoadIdentity;
 207    exec->LoadMatrixd = _mesa_LoadMatrixd;
 208    exec->LoadMatrixf = _mesa_LoadMatrixf;
 209    exec->LoadName = _mesa_LoadName;
 210    exec->LogicOp = _mesa_LogicOp;
 211    exec->Map1d = _mesa_Map1d;
 212    exec->Map1f = _mesa_Map1f;
 213    exec->Map2d = _mesa_Map2d;
 214    exec->Map2f = _mesa_Map2f;
 215    exec->MapGrid1d = _mesa_MapGrid1d;
 216    exec->MapGrid1f = _mesa_MapGrid1f;
 217    exec->MapGrid2d = _mesa_MapGrid2d;
 218    exec->MapGrid2f = _mesa_MapGrid2f;
 219    exec->MatrixMode = _mesa_MatrixMode;
 220    exec->MultMatrixd = _mesa_MultMatrixd;
 221    exec->MultMatrixf = _mesa_MultMatrixf;
 222    exec->NewList = _mesa_NewList;
 223    exec->Ortho = _mesa_Ortho;
 224    exec->PassThrough = _mesa_PassThrough;
 225    exec->PixelMapfv = _mesa_PixelMapfv;
 226    exec->PixelMapuiv = _mesa_PixelMapuiv;
 227    exec->PixelMapusv = _mesa_PixelMapusv;
 228    exec->PixelStoref = _mesa_PixelStoref;
 229    exec->PixelStorei = _mesa_PixelStorei;
 230    exec->PixelTransferf = _mesa_PixelTransferf;
 231    exec->PixelTransferi = _mesa_PixelTransferi;
 232    exec->PixelZoom = _mesa_PixelZoom;
 233    exec->PointSize = _mesa_PointSize;
 234    exec->PolygonMode = _mesa_PolygonMode;
 235    exec->PolygonOffset = _mesa_PolygonOffset;
 236    exec->PolygonStipple = _mesa_PolygonStipple;
 237    exec->PopAttrib = _mesa_PopAttrib;
 238    exec->PopMatrix = _mesa_PopMatrix;
 239    exec->PopName = _mesa_PopName;
 240    exec->PushAttrib = _mesa_PushAttrib;
 241    exec->PushMatrix = _mesa_PushMatrix;
 242    exec->PushName = _mesa_PushName;
 243    exec->RasterPos2d = _mesa_RasterPos2d;
 244    exec->RasterPos2dv = _mesa_RasterPos2dv;
 245    exec->RasterPos2f = _mesa_RasterPos2f;
 246    exec->RasterPos2fv = _mesa_RasterPos2fv;
 247    exec->RasterPos2i = _mesa_RasterPos2i;
 248    exec->RasterPos2iv = _mesa_RasterPos2iv;
 249    exec->RasterPos2s = _mesa_RasterPos2s;
 250    exec->RasterPos2sv = _mesa_RasterPos2sv;
 251    exec->RasterPos3d = _mesa_RasterPos3d;
 252    exec->RasterPos3dv = _mesa_RasterPos3dv;
 253    exec->RasterPos3f = _mesa_RasterPos3f;
 254    exec->RasterPos3fv = _mesa_RasterPos3fv;
 255    exec->RasterPos3i = _mesa_RasterPos3i;
 256    exec->RasterPos3iv = _mesa_RasterPos3iv;
 257    exec->RasterPos3s = _mesa_RasterPos3s;
 258    exec->RasterPos3sv = _mesa_RasterPos3sv;
 259    exec->RasterPos4d = _mesa_RasterPos4d;
 260    exec->RasterPos4dv = _mesa_RasterPos4dv;
 261    exec->RasterPos4f = _mesa_RasterPos4f;
 262    exec->RasterPos4fv = _mesa_RasterPos4fv;
 263    exec->RasterPos4i = _mesa_RasterPos4i;
 264    exec->RasterPos4iv = _mesa_RasterPos4iv;
 265    exec->RasterPos4s = _mesa_RasterPos4s;
 266    exec->RasterPos4sv = _mesa_RasterPos4sv;
 267    exec->ReadBuffer = _mesa_ReadBuffer;
 268    exec->ReadPixels = _mesa_ReadPixels;
 269    exec->RenderMode = _mesa_RenderMode;
 270    exec->Rotated = _mesa_Rotated;
 271    exec->Rotatef = _mesa_Rotatef;
 272    exec->Scaled = _mesa_Scaled;
 273    exec->Scalef = _mesa_Scalef;
 274    exec->Scissor = _mesa_Scissor;
 275    exec->SecondaryColorPointerEXT = _mesa_SecondaryColorPointerEXT;
 276    exec->SelectBuffer = _mesa_SelectBuffer;
 277    exec->ShadeModel = _mesa_ShadeModel;
 278    exec->StencilFunc = _mesa_StencilFunc;
 279    exec->StencilMask = _mesa_StencilMask;
 280    exec->StencilOp = _mesa_StencilOp;
 281    exec->TexEnvf = _mesa_TexEnvf;
 282    exec->TexEnvfv = _mesa_TexEnvfv;
 283    exec->TexEnvi = _mesa_TexEnvi;
 284    exec->TexEnviv = _mesa_TexEnviv;
 285    exec->TexGend = _mesa_TexGend;
 286    exec->TexGendv = _mesa_TexGendv;
 287    exec->TexGenf = _mesa_TexGenf;
 288    exec->TexGenfv = _mesa_TexGenfv;
 289    exec->TexGeni = _mesa_TexGeni;
 290    exec->TexGeniv = _mesa_TexGeniv;
 291    exec->TexImage1D = _mesa_TexImage1D;
 292    exec->TexImage2D = _mesa_TexImage2D;
 293    exec->TexParameterf = _mesa_TexParameterf;
 294    exec->TexParameterfv = _mesa_TexParameterfv;
 295    exec->TexParameteri = _mesa_TexParameteri;
 296    exec->TexParameteriv = _mesa_TexParameteriv;
 297    exec->Translated = _mesa_Translated;
 298    exec->Translatef = _mesa_Translatef;
 299    exec->Viewport = _mesa_Viewport;
 300
 301    /* 1.1 */
 302    exec->AreTexturesResident = _mesa_AreTexturesResident;
 303    exec->AreTexturesResidentEXT = _mesa_AreTexturesResident;
 304    exec->BindTexture = _mesa_BindTexture;
 305    exec->ColorPointer = _mesa_ColorPointer;
 306    exec->CopyTexImage1D = _mesa_CopyTexImage1D;
 307    exec->CopyTexImage2D = _mesa_CopyTexImage2D;
 308    exec->CopyTexSubImage1D = _mesa_CopyTexSubImage1D;
 309    exec->CopyTexSubImage2D = _mesa_CopyTexSubImage2D;
 310    exec->DeleteTextures = _mesa_DeleteTextures;
 311    exec->DisableClientState = _mesa_DisableClientState;
 312    exec->EdgeFlagPointer = _mesa_EdgeFlagPointer;
 313    exec->EnableClientState = _mesa_EnableClientState;
 314    exec->GenTextures = _mesa_GenTextures;
 315    exec->GenTexturesEXT = _mesa_GenTextures;
 316    exec->GetPointerv = _mesa_GetPointerv;
 317    exec->IndexPointer = _mesa_IndexPointer;
 318    exec->InterleavedArrays = _mesa_InterleavedArrays;
 319    exec->IsTexture = _mesa_IsTexture;
 320    exec->IsTextureEXT = _mesa_IsTexture;
 321    exec->NormalPointer = _mesa_NormalPointer;
 322    exec->PopClientAttrib = _mesa_PopClientAttrib;
 323    exec->PrioritizeTextures = _mesa_PrioritizeTextures;
 324    exec->PushClientAttrib = _mesa_PushClientAttrib;
 325    exec->TexCoordPointer = _mesa_TexCoordPointer;
 326    exec->TexSubImage1D = _mesa_TexSubImage1D;
 327    exec->TexSubImage2D = _mesa_TexSubImage2D;
 328    exec->VertexPointer = _mesa_VertexPointer;
 329
 330    /* 1.2 */
 331    exec->CopyTexSubImage3D = _mesa_CopyTexSubImage3D;
 332    exec->TexImage3D = _mesa_TexImage3D;
 333    exec->TexSubImage3D = _mesa_TexSubImage3D;
 334
 335    /* OpenGL 1.2  GL_ARB_imaging */
 336    exec->BlendColor = _mesa_BlendColor;
 337    exec->BlendEquation = _mesa_BlendEquation;
 338    exec->ColorSubTable = _mesa_ColorSubTable;
 339    exec->ColorTable = _mesa_ColorTable;
 340    exec->ColorTableParameterfv = _mesa_ColorTableParameterfv;
 341    exec->ColorTableParameteriv = _mesa_ColorTableParameteriv;
 342    exec->ConvolutionFilter1D = _mesa_ConvolutionFilter1D;
 343    exec->ConvolutionFilter2D = _mesa_ConvolutionFilter2D;
 344    exec->ConvolutionParameterf = _mesa_ConvolutionParameterf;
 345    exec->ConvolutionParameterfv = _mesa_ConvolutionParameterfv;
 346    exec->ConvolutionParameteri = _mesa_ConvolutionParameteri;
 347    exec->ConvolutionParameteriv = _mesa_ConvolutionParameteriv;
 348    exec->CopyColorSubTable = _mesa_CopyColorSubTable;
 349    exec->CopyColorTable = _mesa_CopyColorTable;
 350    exec->CopyConvolutionFilter1D = _mesa_CopyConvolutionFilter1D;
 351    exec->CopyConvolutionFilter2D = _mesa_CopyConvolutionFilter2D;
 352    exec->GetColorTable = _mesa_GetColorTable;
 353    exec->GetColorTableEXT = _mesa_GetColorTable;
 354    exec->GetColorTableParameterfv = _mesa_GetColorTableParameterfv;
 355    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 356    exec->GetColorTableParameteriv = _mesa_GetColorTableParameteriv;
 357    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 358    exec->GetConvolutionFilter = _mesa_GetConvolutionFilter;
 359    exec->GetConvolutionFilterEXT = _mesa_GetConvolutionFilter;
 360    exec->GetConvolutionParameterfv = _mesa_GetConvolutionParameterfv;
 361    exec->GetConvolutionParameterfvEXT = _mesa_GetConvolutionParameterfv;
 362    exec->GetConvolutionParameteriv = _mesa_GetConvolutionParameteriv;
 363    exec->GetConvolutionParameterivEXT = _mesa_GetConvolutionParameteriv;
 364    exec->GetHistogram = _mesa_GetHistogram;
 365    exec->GetHistogramEXT = _mesa_GetHistogram;
 366    exec->GetHistogramParameterfv = _mesa_GetHistogramParameterfv;
 367    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 368    exec->GetHistogramParameteriv = _mesa_GetHistogramParameteriv;
 369    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 370    exec->GetMinmax = _mesa_GetMinmax;
 371    exec->GetMinmaxEXT = _mesa_GetMinmax;
 372    exec->GetMinmaxParameterfv = _mesa_GetMinmaxParameterfv;
 373    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 374    exec->GetMinmaxParameteriv = _mesa_GetMinmaxParameteriv;
 375    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 376    exec->GetSeparableFilter = _mesa_GetSeparableFilter;
 377    exec->GetSeparableFilterEXT = _mesa_GetSeparableFilter;
 378    exec->Histogram = _mesa_Histogram;
 379    exec->Minmax = _mesa_Minmax;
 380    exec->ResetHistogram = _mesa_ResetHistogram;
 381    exec->ResetMinmax = _mesa_ResetMinmax;
 382    exec->SeparableFilter2D = _mesa_SeparableFilter2D;
 383
 384    /* 2. GL_EXT_blend_color */
 385 #if 0
 386    exec->BlendColorEXT = _mesa_BlendColorEXT;
 387 #endif
 388
 389    /* 3. GL_EXT_polygon_offset */
 390    exec->PolygonOffsetEXT = _mesa_PolygonOffsetEXT;
 391
 392    /* 6. GL_EXT_texture3d */
 393 #if 0
 394    exec->CopyTexSubImage3DEXT = _mesa_CopyTexSubImage3D;
 395    exec->TexImage3DEXT = _mesa_TexImage3DEXT;
 396    exec->TexSubImage3DEXT = _mesa_TexSubImage3D;
 397 #endif
 398
 399    /* 11. GL_EXT_histogram */
 400    exec->GetHistogramEXT = _mesa_GetHistogram;
 401    exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
 402    exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
 403    exec->GetMinmaxEXT = _mesa_GetMinmax;
 404    exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
 405    exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
 406
 407    /* ?. GL_SGIX_pixel_texture */
 408    exec->PixelTexGenSGIX = _mesa_PixelTexGenSGIX;
 409
 410    /* 15. GL_SGIS_pixel_texture */
 411    exec->PixelTexGenParameteriSGIS = _mesa_PixelTexGenParameteriSGIS;
 412    exec->PixelTexGenParameterivSGIS = _mesa_PixelTexGenParameterivSGIS;
 413    exec->PixelTexGenParameterfSGIS = _mesa_PixelTexGenParameterfSGIS;
 414    exec->PixelTexGenParameterfvSGIS = _mesa_PixelTexGenParameterfvSGIS;
 415    exec->GetPixelTexGenParameterivSGIS = _mesa_GetPixelTexGenParameterivSGIS;
 416    exec->GetPixelTexGenParameterfvSGIS = _mesa_GetPixelTexGenParameterfvSGIS;
 417
 418    /* 30. GL_EXT_vertex_array */
 419    exec->ColorPointerEXT = _mesa_ColorPointerEXT;
 420    exec->EdgeFlagPointerEXT = _mesa_EdgeFlagPointerEXT;
 421    exec->IndexPointerEXT = _mesa_IndexPointerEXT;
 422    exec->NormalPointerEXT = _mesa_NormalPointerEXT;
 423    exec->TexCoordPointerEXT = _mesa_TexCoordPointerEXT;
 424    exec->VertexPointerEXT = _mesa_VertexPointerEXT;
 425
 426    /* 37. GL_EXT_blend_minmax */
 427 #if 0
 428    exec->BlendEquationEXT = _mesa_BlendEquationEXT;
 429 #endif
 430
 431    /* 54. GL_EXT_point_parameters */
 432    exec->PointParameterfEXT = _mesa_PointParameterfEXT;
 433    exec->PointParameterfvEXT = _mesa_PointParameterfvEXT;
 434
 435    /* 78. GL_EXT_paletted_texture */
 436 #if 0
 437    exec->ColorTableEXT = _mesa_ColorTableEXT;
 438    exec->ColorSubTableEXT = _mesa_ColorSubTableEXT;
 439 #endif
 440    exec->GetColorTableEXT = _mesa_GetColorTable;
 441    exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
 442    exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
 443
 444    /* 97. GL_EXT_compiled_vertex_array */
 445    exec->LockArraysEXT = _mesa_LockArraysEXT;
 446    exec->UnlockArraysEXT = _mesa_UnlockArraysEXT;
 447
 448    /* 148. GL_EXT_multi_draw_arrays */
 449    exec->MultiDrawArraysEXT = _mesa_MultiDrawArraysEXT;
 450    exec->MultiDrawElementsEXT = _mesa_MultiDrawElementsEXT;
 451
 452    /* 173. GL_INGR_blend_func_separate */
 453    exec->BlendFuncSeparateEXT = _mesa_BlendFuncSeparateEXT;
 454
 455    /* 196. GL_MESA_resize_buffers */
 456    exec->ResizeBuffersMESA = _mesa_ResizeBuffersMESA;
 457
 458    /* 197. GL_MESA_window_pos */
 459    exec->WindowPos2dMESA = _mesa_WindowPos2dMESA;
 460    exec->WindowPos2dvMESA = _mesa_WindowPos2dvMESA;
 461    exec->WindowPos2fMESA = _mesa_WindowPos2fMESA;
 462    exec->WindowPos2fvMESA = _mesa_WindowPos2fvMESA;
 463    exec->WindowPos2iMESA = _mesa_WindowPos2iMESA;
 464    exec->WindowPos2ivMESA = _mesa_WindowPos2ivMESA;
 465    exec->WindowPos2sMESA = _mesa_WindowPos2sMESA;
 466    exec->WindowPos2svMESA = _mesa_WindowPos2svMESA;
 467    exec->WindowPos3dMESA = _mesa_WindowPos3dMESA;
 468    exec->WindowPos3dvMESA = _mesa_WindowPos3dvMESA;
 469    exec->WindowPos3fMESA = _mesa_WindowPos3fMESA;
 470    exec->WindowPos3fvMESA = _mesa_WindowPos3fvMESA;
 471    exec->WindowPos3iMESA = _mesa_WindowPos3iMESA;
 472    exec->WindowPos3ivMESA = _mesa_WindowPos3ivMESA;
 473    exec->WindowPos3sMESA = _mesa_WindowPos3sMESA;
 474    exec->WindowPos3svMESA = _mesa_WindowPos3svMESA;
 475    exec->WindowPos4dMESA = _mesa_WindowPos4dMESA;
 476    exec->WindowPos4dvMESA = _mesa_WindowPos4dvMESA;
 477    exec->WindowPos4fMESA = _mesa_WindowPos4fMESA;
 478    exec->WindowPos4fvMESA = _mesa_WindowPos4fvMESA;
 479    exec->WindowPos4iMESA = _mesa_WindowPos4iMESA;
 480    exec->WindowPos4ivMESA = _mesa_WindowPos4ivMESA;
 481    exec->WindowPos4sMESA = _mesa_WindowPos4sMESA;
 482    exec->WindowPos4svMESA = _mesa_WindowPos4svMESA;
 483
 484    /* 233. GL_NV_vertex_program */
 485 #if FEATURE_NV_vertex_program
 486    exec->BindProgramNV = _mesa_BindProgramNV;
 487    exec->DeleteProgramsNV = _mesa_DeleteProgramsNV;
 488    exec->ExecuteProgramNV = _mesa_ExecuteProgramNV;
 489    exec->GenProgramsNV = _mesa_GenProgramsNV;
 490    exec->AreProgramsResidentNV = _mesa_AreProgramsResidentNV;
 491    exec->RequestResidentProgramsNV = _mesa_RequestResidentProgramsNV;
 492    exec->GetProgramParameterfvNV = _mesa_GetProgramParameterfvNV;
 493    exec->GetProgramParameterdvNV = _mesa_GetProgramParameterdvNV;
 494    exec->GetProgramivNV = _mesa_GetProgramivNV;
 495    exec->GetProgramStringNV = _mesa_GetProgramStringNV;
 496    exec->GetTrackMatrixivNV = _mesa_GetTrackMatrixivNV;
 497    exec->GetVertexAttribdvNV = _mesa_GetVertexAttribdvNV;
 498    exec->GetVertexAttribfvNV = _mesa_GetVertexAttribfvNV;
 499    exec->GetVertexAttribivNV = _mesa_GetVertexAttribivNV;
 500    exec->GetVertexAttribPointervNV = _mesa_GetVertexAttribPointervNV;
 501    exec->IsProgramNV = _mesa_IsProgramNV;
 502    exec->LoadProgramNV = _mesa_LoadProgramNV;
 503    exec->ProgramParameter4dNV = _mesa_ProgramParameter4dNV;
 504    exec->ProgramParameter4dvNV = _mesa_ProgramParameter4dvNV;
 505    exec->ProgramParameter4fNV = _mesa_ProgramParameter4fNV;
 506    exec->ProgramParameter4fvNV = _mesa_ProgramParameter4fvNV;
 507    exec->ProgramParameters4dvNV = _mesa_ProgramParameters4dvNV;
 508    exec->ProgramParameters4fvNV = _mesa_ProgramParameters4fvNV;
 509    exec->TrackMatrixNV = _mesa_TrackMatrixNV;
 510    exec->VertexAttribPointerNV = _mesa_VertexAttribPointerNV;
 511 #endif
 512
 513 #if FEATURE_NV_fragment_program
 514    exec->ProgramNamedParameter4fNV = _mesa_ProgramNamedParameter4fNV;
 515    exec->ProgramNamedParameter4dNV = _mesa_ProgramNamedParameter4dNV;
 516    exec->ProgramNamedParameter4fvNV = _mesa_ProgramNamedParameter4fvNV;
 517    exec->ProgramNamedParameter4dvNV = _mesa_ProgramNamedParameter4dvNV;
 518    exec->GetProgramNamedParameterfvNV = _mesa_GetProgramNamedParameterfvNV;
 519    exec->GetProgramNamedParameterdvNV = _mesa_GetProgramNamedParameterdvNV;
 520    exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
 521    exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
 522    exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
 523    exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
 524    exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
 525    exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
 526 #endif
 527
 528    /* 262. GL_NV_point_sprite */
 529    exec->PointParameteriNV = _mesa_PointParameteriNV;
 530    exec->PointParameterivNV = _mesa_PointParameterivNV;
 531
 532    /* 268. GL_EXT_stencil_two_side */
 533    exec->ActiveStencilFaceEXT = _mesa_ActiveStencilFaceEXT;
 534
 535    /* ARB 1. GL_ARB_multitexture */
 536    exec->ActiveTextureARB = _mesa_ActiveTextureARB;
 537    exec->ClientActiveTextureARB = _mesa_ClientActiveTextureARB;
 538
 539    /* ARB 3. GL_ARB_transpose_matrix */
 540    exec->LoadTransposeMatrixdARB = _mesa_LoadTransposeMatrixdARB;
 541    exec->LoadTransposeMatrixfARB = _mesa_LoadTransposeMatrixfARB;
 542    exec->MultTransposeMatrixdARB = _mesa_MultTransposeMatrixdARB;
 543    exec->MultTransposeMatrixfARB = _mesa_MultTransposeMatrixfARB;
 544
 545    /* ARB 5. GL_ARB_multisample */
 546    exec->SampleCoverageARB = _mesa_SampleCoverageARB;
 547
 548    /* ARB 12. GL_ARB_texture_compression */
 549    exec->CompressedTexImage3DARB = _mesa_CompressedTexImage3DARB;
 550    exec->CompressedTexImage2DARB = _mesa_CompressedTexImage2DARB;
 551    exec->CompressedTexImage1DARB = _mesa_CompressedTexImage1DARB;
 552    exec->CompressedTexSubImage3DARB = _mesa_CompressedTexSubImage3DARB;
 553    exec->CompressedTexSubImage2DARB = _mesa_CompressedTexSubImage2DARB;
 554    exec->CompressedTexSubImage1DARB = _mesa_CompressedTexSubImage1DARB;
 555    exec->GetCompressedTexImageARB = _mesa_GetCompressedTexImageARB;
 556
 557    /* ARB 14. GL_ARB_point_parameters */
 558    /* reuse EXT_point_parameters functions */
 559
 560    /* ARB 28. GL_ARB_vertex_buffer_object */
 561 #if FEATURE_ARB_vertex_buffer_object
 562    exec->BindBufferARB = _mesa_BindBufferARB;
 563    exec->DeleteBuffersARB = _mesa_DeleteBuffersARB;
 564    exec->GenBuffersARB = _mesa_GenBuffersARB;
 565    exec->IsBufferARB = _mesa_IsBufferARB;
 566    exec->BufferDataARB = _mesa_BufferDataARB;
 567    exec->BufferSubDataARB = _mesa_BufferSubDataARB;
 568    exec->GetBufferSubDataARB = _mesa_GetBufferSubDataARB;
 569    exec->MapBufferARB = _mesa_MapBufferARB;
 570    exec->UnmapBufferARB = _mesa_UnmapBufferARB;
 571    exec->GetBufferParameterivARB = _mesa_GetBufferParameterivARB;
 572    exec->GetBufferPointervARB = _mesa_GetBufferPointervARB;
 573 #endif
 574 }
 575
 576
 577
 578 /**********************************************************************/
 579 /*****                   State update logic                       *****/
 580 /**********************************************************************/
 581
 582
 583 /*
 584  * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
 585  * in ctx->_TriangleCaps if needed.
 586  */
 587 static void
 588 update_polygon( GLcontext *ctx )
 589 {
 590    ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
 591
 592    if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
 593       ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
 594
 595    /* Any Polygon offsets enabled? */
 596    if (ctx->Polygon.OffsetPoint ||
 597        ctx->Polygon.OffsetLine ||
 598        ctx->Polygon.OffsetFill) {
 599       ctx->_TriangleCaps |= DD_TRI_OFFSET;
 600    }
 601 }
 602
 603 static void
 604 calculate_model_project_matrix( GLcontext *ctx )
 605 {
 606    _math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
 607                             ctx->ProjectionMatrixStack.Top,
 608                             ctx->ModelviewMatrixStack.Top );
 609
 610    _math_matrix_analyse( &ctx->_ModelProjectMatrix );
 611 }
 612
 613 static void
 614 update_modelview_scale( GLcontext *ctx )
 615 {
 616    ctx->_ModelViewInvScale = 1.0F;
 617    if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_UNIFORM_SCALE |
 618                                MAT_FLAG_GENERAL_SCALE |
 619                                MAT_FLAG_GENERAL_3D |
 620                                MAT_FLAG_GENERAL) ) {
 621       const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
 622       GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
 623       if (f < 1e-12) f = 1.0;
 624       if (ctx->_NeedEyeCoords)
 625          ctx->_ModelViewInvScale = 1.0F / SQRTF(f);
 626       else
 627          ctx->_ModelViewInvScale = SQRTF(f);
 628    }
 629 }
 630
 631
 632 /* Bring uptodate any state that relies on _NeedEyeCoords.
 633  */
 634 static void
 635 update_tnl_spaces( GLcontext *ctx, GLuint oldneedeyecoords )
 636 {
 637    /* Check if the truth-value interpretations of the bitfields have
 638     * changed:
 639     */
 640    if ((oldneedeyecoords == 0) != (ctx->_NeedEyeCoords == 0)) {
 641       /* Recalculate all state that depends on _NeedEyeCoords.
 642        */
 643       update_modelview_scale(ctx);
 644       _mesa_compute_light_positions( ctx );
 645
 646       if (ctx->Driver.LightingSpaceChange)
 647          ctx->Driver.LightingSpaceChange( ctx );
 648    }
 649    else {
 650       GLuint new_state = ctx->NewState;
 651
 652       /* Recalculate that same state only if it has been invalidated
 653        * by other statechanges.
 654        */
 655       if (new_state & _NEW_MODELVIEW)
 656          update_modelview_scale(ctx);
 657
 658       if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW))
 659          _mesa_compute_light_positions( ctx );
 660    }
 661 }
 662
 663
 664 static void
 665 update_drawbuffer( GLcontext *ctx )
 666 {
 667    ctx->DrawBuffer->_Xmin = 0;
 668    ctx->DrawBuffer->_Ymin = 0;
 669    ctx->DrawBuffer->_Xmax = ctx->DrawBuffer->Width;
 670    ctx->DrawBuffer->_Ymax = ctx->DrawBuffer->Height;
 671    if (ctx->Scissor.Enabled) {
 672       if (ctx->Scissor.X > ctx->DrawBuffer->_Xmin) {
 673          ctx->DrawBuffer->_Xmin = ctx->Scissor.X;
 674       }
 675       if (ctx->Scissor.Y > ctx->DrawBuffer->_Ymin) {
 676          ctx->DrawBuffer->_Ymin = ctx->Scissor.Y;
 677       }
 678       if (ctx->Scissor.X + ctx->Scissor.Width < ctx->DrawBuffer->_Xmax) {
 679          ctx->DrawBuffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
 680       }
 681       if (ctx->Scissor.Y + ctx->Scissor.Height < ctx->DrawBuffer->_Ymax) {
 682          ctx->DrawBuffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
 683       }
 684    }
 685 }
 686
 687
 688 /* NOTE: This routine references Tranform attribute values to compute
 689  * userclip positions in clip space, but is only called on
 690  * _NEW_PROJECTION.  The _mesa_ClipPlane() function keeps these values
 691  * up to date across changes to the Transform attributes.
 692  */
 693 static void
 694 update_projection( GLcontext *ctx )
 695 {
 696    _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
 697
 698    /* Recompute clip plane positions in clipspace.  This is also done
 699     * in _mesa_ClipPlane().
 700     */
 701    if (ctx->Transform.ClipPlanesEnabled) {
 702       GLuint p;
 703       for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
 704          if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
 705             _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
 706                                  ctx->Transform.EyeUserPlane[p],
 707                                  ctx->ProjectionMatrixStack.Top->inv );
 708          }
 709       }
 710    }
 711 }
 712
 713
 714 /*
 715  * Return a bitmask of IMAGE_*_BIT flags which to indicate which
 716  * pixel transfer operations are enabled.
 717  */
 718 static void
 719 update_image_transfer_state(GLcontext *ctx)
 720 {
 721    GLuint mask = 0;
 722
 723    if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||
 724        ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
 725        ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||
 726        ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
 727       mask |= IMAGE_SCALE_BIAS_BIT;
 728
 729    if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
 730       mask |= IMAGE_SHIFT_OFFSET_BIT;
 731
 732    if (ctx->Pixel.MapColorFlag)
 733       mask |= IMAGE_MAP_COLOR_BIT;
 734
 735    if (ctx->Pixel.ColorTableEnabled)
 736       mask |= IMAGE_COLOR_TABLE_BIT;
 737
 738    if (ctx->Pixel.Convolution1DEnabled ||
 739        ctx->Pixel.Convolution2DEnabled ||
 740        ctx->Pixel.Separable2DEnabled) {
 741       mask |= IMAGE_CONVOLUTION_BIT;
 742       if (ctx->Pixel.PostConvolutionScale[0] != 1.0F ||
 743           ctx->Pixel.PostConvolutionScale[1] != 1.0F ||
 744           ctx->Pixel.PostConvolutionScale[2] != 1.0F ||
 745           ctx->Pixel.PostConvolutionScale[3] != 1.0F ||
 746           ctx->Pixel.PostConvolutionBias[0] != 0.0F ||
 747           ctx->Pixel.PostConvolutionBias[1] != 0.0F ||
 748           ctx->Pixel.PostConvolutionBias[2] != 0.0F ||
 749           ctx->Pixel.PostConvolutionBias[3] != 0.0F) {
 750          mask |= IMAGE_POST_CONVOLUTION_SCALE_BIAS;
 751       }
 752    }
 753
 754    if (ctx->Pixel.PostConvolutionColorTableEnabled)
 755       mask |= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT;
 756
 757    if (ctx->ColorMatrixStack.Top->type != MATRIX_IDENTITY ||
 758        ctx->Pixel.PostColorMatrixScale[0] != 1.0F ||
 759        ctx->Pixel.PostColorMatrixBias[0]  != 0.0F ||
 760        ctx->Pixel.PostColorMatrixScale[1] != 1.0F ||
 761        ctx->Pixel.PostColorMatrixBias[1]  != 0.0F ||
 762        ctx->Pixel.PostColorMatrixScale[2] != 1.0F ||
 763        ctx->Pixel.PostColorMatrixBias[2]  != 0.0F ||
 764        ctx->Pixel.PostColorMatrixScale[3] != 1.0F ||
 765        ctx->Pixel.PostColorMatrixBias[3]  != 0.0F)
 766       mask |= IMAGE_COLOR_MATRIX_BIT;
 767
 768    if (ctx->Pixel.PostColorMatrixColorTableEnabled)
 769       mask |= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT;
 770
 771    if (ctx->Pixel.HistogramEnabled)
 772       mask |= IMAGE_HISTOGRAM_BIT;
 773
 774    if (ctx->Pixel.MinMaxEnabled)
 775       mask |= IMAGE_MIN_MAX_BIT;
 776
 777    ctx->_ImageTransferState = mask;
 778 }
 779
 780
 781
 782
 783 /* Note: This routine refers to derived texture attribute values to
 784  * compute the ENABLE_TEXMAT flags, but is only called on
 785  * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
 786  * flags are updated by _mesa_update_textures(), below.
 787  *
 788  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 789  * will be computed twice.
 790  */
 791 static void
 792 update_texture_matrices( GLcontext *ctx )
 793 {
 794    GLuint i;
 795
 796    ctx->Texture._TexMatEnabled = 0;
 797
 798    for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
 799       if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
 800          _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
 801
 802          if (ctx->Texture.Unit[i]._ReallyEnabled &&
 803              ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
 804             ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
 805
 806          if (ctx->Driver.TextureMatrix)
 807             ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
 808       }
 809    }
 810 }
 811
 812
 813 /* Note: This routine refers to derived texture matrix values to
 814  * compute the ENABLE_TEXMAT flags, but is only called on
 815  * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
 816  * flags are updated by _mesa_update_texture_matrices, above.
 817  *
 818  * If both TEXTURE and TEXTURE_MATRIX change at once, these values
 819  * will be computed twice.
 820  */
 821 static void
 822 update_texture_state( GLcontext *ctx )
 823 {
 824    GLuint unit;
 825
 826    ctx->Texture._EnabledUnits = 0;
 827    ctx->Texture._GenFlags = 0;
 828    ctx->_NeedNormals &= ~NEED_NORMALS_TEXGEN;
 829    ctx->_NeedEyeCoords &= ~NEED_EYE_TEXGEN;
 830    ctx->Texture._TexMatEnabled = 0;
 831    ctx->Texture._TexGenEnabled = 0;
 832
 833    /* Update texture unit state.
 834     */
 835    for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
 836       struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 837       GLuint enableBits;
 838
 839       texUnit->_ReallyEnabled = 0;
 840       texUnit->_GenFlags = 0;
 841
 842       /* Get the bitmask of texture enables */
 843       if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
 844          enableBits = ctx->FragmentProgram.Current->TexturesUsed[unit];
 845       }
 846       else {
 847          if (!texUnit->Enabled)
 848             continue;
 849          enableBits = texUnit->Enabled;
 850       }
 851
 852       /* Look for the highest-priority texture target that's enabled and
 853        * complete.  That's the one we'll use for texturing.  If we're using
 854        * a fragment program we're guaranteed that bitcount(enabledBits) <= 1.
 855        */
 856       if (enableBits & TEXTURE_CUBE_BIT) {
 857          struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
 858          if (!texObj->Complete) {
 859             _mesa_test_texobj_completeness(ctx, texObj);
 860          }
 861          if (texObj->Complete) {
 862             texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
 863             texUnit->_Current = texObj;
 864          }
 865       }
 866
 867       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_3D_BIT)) {
 868          struct gl_texture_object *texObj = texUnit->Current3D;
 869          if (!texObj->Complete) {
 870             _mesa_test_texobj_completeness(ctx, texObj);
 871          }
 872          if (texObj->Complete) {
 873             texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
 874             texUnit->_Current = texObj;
 875          }
 876       }
 877
 878       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_RECT_BIT)) {
 879          struct gl_texture_object *texObj = texUnit->CurrentRect;
 880          if (!texObj->Complete) {
 881             _mesa_test_texobj_completeness(ctx, texObj);
 882          }
 883          if (texObj->Complete) {
 884             texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
 885             texUnit->_Current = texObj;
 886          }
 887       }
 888
 889       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_2D_BIT)) {
 890          struct gl_texture_object *texObj = texUnit->Current2D;
 891          if (!texObj->Complete) {
 892             _mesa_test_texobj_completeness(ctx, texObj);
 893          }
 894          if (texObj->Complete) {
 895             texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
 896             texUnit->_Current = texObj;
 897          }
 898       }
 899
 900       if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_1D_BIT)) {
 901          struct gl_texture_object *texObj = texUnit->Current1D;
 902          if (!texObj->Complete) {
 903             _mesa_test_texobj_completeness(ctx, texObj);
 904          }
 905          if (texObj->Complete) {
 906             texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
 907             texUnit->_Current = texObj;
 908          }
 909       }
 910
 911       if (!texUnit->_ReallyEnabled) {
 912          texUnit->_Current = NULL;
 913          continue;
 914       }
 915
 916       if (texUnit->_ReallyEnabled)
 917          ctx->Texture._EnabledUnits |= (1 << unit);
 918
 919       if (texUnit->TexGenEnabled) {
 920          if (texUnit->TexGenEnabled & S_BIT) {
 921             texUnit->_GenFlags |= texUnit->_GenBitS;
 922          }
 923          if (texUnit->TexGenEnabled & T_BIT) {
 924             texUnit->_GenFlags |= texUnit->_GenBitT;
 925          }
 926          if (texUnit->TexGenEnabled & Q_BIT) {
 927             texUnit->_GenFlags |= texUnit->_GenBitQ;
 928          }
 929          if (texUnit->TexGenEnabled & R_BIT) {
 930             texUnit->_GenFlags |= texUnit->_GenBitR;
 931          }
 932
 933          ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
 934          ctx->Texture._GenFlags |= texUnit->_GenFlags;
 935       }
 936
 937       if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
 938          ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
 939    }
 940
 941    if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS) {
 942       ctx->_NeedNormals |= NEED_NORMALS_TEXGEN;
 943       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
 944    }
 945
 946    if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) {
 947       ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
 948    }
 949
 950    ctx->Texture._EnabledCoordUnits = ctx->Texture._EnabledUnits;
 951    /* Fragment programs may need texture coordinates but not the
 952     * corresponding texture images.
 953     */
 954    if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
 955       ctx->Texture._EnabledCoordUnits |=
 956          (ctx->FragmentProgram.Current->InputsRead >> FRAG_ATTRIB_TEX0);
 957    }
 958 }
 959
 960
 961 /*
 962  * Update items which depend on vertex/fragment programs.
 963  */
 964 static void
 965 update_program( GLcontext *ctx )
 966 {
 967    if (ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current) {
 968       if (ctx->FragmentProgram.Current->InputsRead & (1 << FRAG_ATTRIB_COL1))
 969          ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
 970    }
 971 }
 972
 973
 974 /*
 975  * If ctx->NewState is non-zero then this function MUST be called before
 976  * rendering any primitive.  Basically, function pointers and miscellaneous
 977  * flags are updated to reflect the current state of the state machine.
 978  *
 979  * The above constraint is now maintained largely by the two Exec
 980  * dispatch tables, which trigger the appropriate flush on transition
 981  * between State and Geometry modes.
 982  *
 983  * Special care is taken with the derived value _NeedEyeCoords.  This
 984  * is a bitflag which is updated with information from a number of
 985  * attribute groups (MODELVIEW, LIGHT, TEXTURE).  A lot of derived
 986  * state references this value, and must be treated with care to
 987  * ensure that updates are done correctly.  All state dependent on
 988  * _NeedEyeCoords is calculated from within _mesa_update_tnl_spaces(),
 989  * and from nowhere else.
 990  */
 991 void _mesa_update_state( GLcontext *ctx )
 992 {
 993    const GLuint new_state = ctx->NewState;
 994    const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
 995
 996    if (MESA_VERBOSE & VERBOSE_STATE)
 997       _mesa_print_state("_mesa_update_state", new_state);
 998
 999    if (new_state & _NEW_MODELVIEW)
1000       _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1001
1002    if (new_state & _NEW_PROJECTION)
1003       update_projection( ctx );
1004
1005    if (new_state & _NEW_TEXTURE_MATRIX)
1006       update_texture_matrices( ctx );
1007
1008    if (new_state & _NEW_COLOR_MATRIX)
1009       _math_matrix_analyse( ctx->ColorMatrixStack.Top );
1010
1011    /* References ColorMatrix.type (derived above).
1012     */
1013    if (new_state & _IMAGE_NEW_TRANSFER_STATE)
1014       update_image_transfer_state(ctx);
1015
1016    /* Contributes to NeedEyeCoords, NeedNormals.
1017     */
1018    if (new_state & _NEW_TEXTURE)
1019       update_texture_state( ctx );
1020
1021    if (new_state & (_NEW_BUFFERS|_NEW_SCISSOR))
1022       update_drawbuffer( ctx );
1023
1024    if (new_state & _NEW_POLYGON)
1025       update_polygon( ctx );
1026
1027    /* Contributes to NeedEyeCoords, NeedNormals.
1028     */
1029    if (new_state & _NEW_LIGHT)
1030       _mesa_update_lighting( ctx );
1031
1032    /* We can light in object space if the modelview matrix preserves
1033     * lengths and relative angles.
1034     */
1035    if (new_state & (_NEW_MODELVIEW|_NEW_LIGHT)) {
1036       ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT_MODELVIEW;
1037       if (ctx->Light.Enabled &&
1038           !TEST_MAT_FLAGS( ctx->ModelviewMatrixStack.Top, MAT_FLAGS_LENGTH_PRESERVING))
1039             ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
1040    }
1041
1042    if (new_state & _NEW_PROGRAM)
1043       update_program( ctx );
1044
1045 #if 0
1046    /* XXX this is a bit of a hack.  We should be checking elsewhere if
1047     * vertex program mode is enabled.  We set _NeedEyeCoords to zero to
1048     * ensure that the combined modelview/projection matrix is computed
1049     * in calculate_model_project_matrix().
1050     */
1051    if (ctx->VertexProgram.Enabled)
1052       ctx->_NeedEyeCoords = 0;
1053    /* KW: it's now always computed.
1054     */
1055 #endif
1056
1057    /* Keep ModelviewProject uptodate always to allow tnl
1058     * implementations that go model->clip even when eye is required.
1059     */
1060    if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
1061       calculate_model_project_matrix(ctx);
1062
1063    /* ctx->_NeedEyeCoords is now uptodate.
1064     *
1065     * If the truth value of this variable has changed, update for the
1066     * new lighting space and recompute the positions of lights and the
1067     * normal transform.
1068     *
1069     * If the lighting space hasn't changed, may still need to recompute
1070     * light positions & normal transforms for other reasons.
1071     */
1072    if (new_state & (_NEW_MODELVIEW |
1073                     _NEW_LIGHT |
1074                     _MESA_NEW_NEED_EYE_COORDS))
1075       update_tnl_spaces( ctx, oldneedeyecoords );
1076
1077    /*
1078     * Here the driver sets up all the ctx->Driver function pointers
1079     * to it's specific, private functions, and performs any
1080     * internal state management necessary, including invalidating
1081     * state of active modules.
1082     *
1083     * Set ctx->NewState to zero to avoid recursion if
1084     * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
1085     */
1086    ctx->NewState = 0;
1087    ctx->Driver.UpdateState(ctx, new_state);
1088    ctx->Array.NewState = 0;
1089
1090    /* At this point we can do some assertions to be sure the required
1091     * device driver function pointers are all initialized.
1092     */
1093    ASSERT(ctx->Driver.GetString);
1094    ASSERT(ctx->Driver.UpdateState);
1095    ASSERT(ctx->Driver.Clear);
1096    ASSERT(ctx->Driver.GetBufferSize);
1097    if (ctx->Visual.accumRedBits > 0) {
1098       ASSERT(ctx->Driver.Accum);
1099    }
1100    ASSERT(ctx->Driver.DrawPixels);
1101    ASSERT(ctx->Driver.ReadPixels);
1102    ASSERT(ctx->Driver.CopyPixels);
1103    ASSERT(ctx->Driver.Bitmap);
1104    ASSERT(ctx->Driver.ResizeBuffers);
1105    ASSERT(ctx->Driver.TexImage1D);
1106    ASSERT(ctx->Driver.TexImage2D);
1107    ASSERT(ctx->Driver.TexImage3D);
1108    ASSERT(ctx->Driver.TexSubImage1D);
1109    ASSERT(ctx->Driver.TexSubImage2D);
1110    ASSERT(ctx->Driver.TexSubImage3D);
1111    ASSERT(ctx->Driver.CopyTexImage1D);
1112    ASSERT(ctx->Driver.CopyTexImage2D);
1113    ASSERT(ctx->Driver.CopyTexSubImage1D);
1114    ASSERT(ctx->Driver.CopyTexSubImage2D);
1115    ASSERT(ctx->Driver.CopyTexSubImage3D);
1116    if (ctx->Extensions.ARB_texture_compression) {
1117 #if 0  /* HW drivers need these, but not SW rasterizers */
1118       ASSERT(ctx->Driver.CompressedTexImage1D);
1119       ASSERT(ctx->Driver.CompressedTexImage2D);
1120       ASSERT(ctx->Driver.CompressedTexImage3D);
1121       ASSERT(ctx->Driver.CompressedTexSubImage1D);
1122       ASSERT(ctx->Driver.CompressedTexSubImage2D);
1123       ASSERT(ctx->Driver.CompressedTexSubImage3D);
1124 #endif
1125    }
1126 }
1127
1128 /* Is this helpful?
1129  */
1130 void
1131 _mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag )
1132 {
1133    if (flag)
1134       ctx->_NeedEyeCoords &= ~NEED_EYE_DRIVER;
1135    else
1136       ctx->_NeedEyeCoords |= NEED_EYE_DRIVER;
1137
1138    ctx->NewState |= _NEW_POINT; /* one of the bits from
1139                                  * _MESA_NEW_NEED_EYE_COORDS.
1140                                  */
1141 }