state.c revision 27558a160a9fe91745728d7626995cd88f8fe339 
1/* $Id: state.c,v 1.99 2003/03/01 01:50:22 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 * This file manages recalculation of derived values in the
30 * __GLcontext.
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#include "buffers.h"
40#include "clip.h"
41#include "colortab.h"
42#include "context.h"
43#include "convolve.h"
44#include "depth.h"
45#include "dlist.h"
46#include "drawpix.h"
47#include "enable.h"
48#include "eval.h"
49#include "get.h"
50#include "feedback.h"
51#include "fog.h"
52#include "hint.h"
53#include "histogram.h"
54#include "imports.h"
55#include "light.h"
56#include "lines.h"
57#include "matrix.h"
58#include "pixel.h"
59#include "points.h"
60#include "polygon.h"
61#include "rastpos.h"
62#include "state.h"
63#include "stencil.h"
64#include "teximage.h"
65#include "texobj.h"
66#include "texstate.h"
67#include "mtypes.h"
68#include "varray.h"
69#if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
70#include "nvprogram.h"
71#endif
72
73#include "math/m_matrix.h"
74#include "math/m_xform.h"
75
76
77static int
78generic_noop(void)
79{
80#ifdef DEBUG
81   _mesa_problem(NULL, "User called no-op dispatch function");
82#endif
83   return 0;
84}
85
86
87/*
88 * Set all pointers in the given dispatch table to point to a
89 * generic no-op function.
90 */
91void
92_mesa_init_no_op_table(struct _glapi_table *table, GLuint tableSize)
93{
94   GLuint i;
95   void **dispatch = (void **) table;
96   for (i = 0; i < tableSize; i++) {
97      dispatch[i] = (void *) generic_noop;
98   }
99}
100
101
102
103/*
104 * Initialize the given dispatch table with pointers to Mesa's
105 * immediate-mode commands.
106 *
107 * Pointers to begin/end object commands and a few others
108 * are provided via the vtxfmt interface elsewhere.
109 */
110void
111_mesa_init_exec_table(struct _glapi_table *exec, GLuint tableSize)
112{
113   /* first initialize all dispatch slots to no-op */
114   _mesa_init_no_op_table(exec, tableSize);
115
116   _mesa_loopback_init_api_table( exec, GL_TRUE );
117
118   /* load the dispatch slots we understand */
119   exec->Accum = _mesa_Accum;
120   exec->AlphaFunc = _mesa_AlphaFunc;
121   exec->Bitmap = _mesa_Bitmap;
122   exec->BlendFunc = _mesa_BlendFunc;
123   exec->CallList = _mesa_CallList;
124   exec->CallLists = _mesa_CallLists;
125   exec->Clear = _mesa_Clear;
126   exec->ClearAccum = _mesa_ClearAccum;
127   exec->ClearColor = _mesa_ClearColor;
128   exec->ClearDepth = _mesa_ClearDepth;
129   exec->ClearIndex = _mesa_ClearIndex;
130   exec->ClearStencil = _mesa_ClearStencil;
131   exec->ClipPlane = _mesa_ClipPlane;
132   exec->ColorMask = _mesa_ColorMask;
133   exec->ColorMaterial = _mesa_ColorMaterial;
134   exec->CopyPixels = _mesa_CopyPixels;
135   exec->CullFace = _mesa_CullFace;
136   exec->DeleteLists = _mesa_DeleteLists;
137   exec->DepthFunc = _mesa_DepthFunc;
138   exec->DepthMask = _mesa_DepthMask;
139   exec->DepthRange = _mesa_DepthRange;
140   exec->Disable = _mesa_Disable;
141   exec->DrawBuffer = _mesa_DrawBuffer;
142   exec->DrawPixels = _mesa_DrawPixels;
143   exec->Enable = _mesa_Enable;
144   exec->EndList = _mesa_EndList;
145   exec->FeedbackBuffer = _mesa_FeedbackBuffer;
146   exec->Finish = _mesa_Finish;
147   exec->Flush = _mesa_Flush;
148   exec->FogCoordPointerEXT = _mesa_FogCoordPointerEXT;
149   exec->Fogf = _mesa_Fogf;
150   exec->Fogfv = _mesa_Fogfv;
151   exec->Fogi = _mesa_Fogi;
152   exec->Fogiv = _mesa_Fogiv;
153   exec->FrontFace = _mesa_FrontFace;
154   exec->Frustum = _mesa_Frustum;
155   exec->GenLists = _mesa_GenLists;
156   exec->GetBooleanv = _mesa_GetBooleanv;
157   exec->GetClipPlane = _mesa_GetClipPlane;
158   exec->GetDoublev = _mesa_GetDoublev;
159   exec->GetError = _mesa_GetError;
160   exec->GetFloatv = _mesa_GetFloatv;
161   exec->GetIntegerv = _mesa_GetIntegerv;
162   exec->GetLightfv = _mesa_GetLightfv;
163   exec->GetLightiv = _mesa_GetLightiv;
164   exec->GetMapdv = _mesa_GetMapdv;
165   exec->GetMapfv = _mesa_GetMapfv;
166   exec->GetMapiv = _mesa_GetMapiv;
167   exec->GetMaterialfv = _mesa_GetMaterialfv;
168   exec->GetMaterialiv = _mesa_GetMaterialiv;
169   exec->GetPixelMapfv = _mesa_GetPixelMapfv;
170   exec->GetPixelMapuiv = _mesa_GetPixelMapuiv;
171   exec->GetPixelMapusv = _mesa_GetPixelMapusv;
172   exec->GetPolygonStipple = _mesa_GetPolygonStipple;
173   exec->GetString = _mesa_GetString;
174   exec->GetTexEnvfv = _mesa_GetTexEnvfv;
175   exec->GetTexEnviv = _mesa_GetTexEnviv;
176   exec->GetTexGendv = _mesa_GetTexGendv;
177   exec->GetTexGenfv = _mesa_GetTexGenfv;
178   exec->GetTexGeniv = _mesa_GetTexGeniv;
179   exec->GetTexImage = _mesa_GetTexImage;
180   exec->GetTexLevelParameterfv = _mesa_GetTexLevelParameterfv;
181   exec->GetTexLevelParameteriv = _mesa_GetTexLevelParameteriv;
182   exec->GetTexParameterfv = _mesa_GetTexParameterfv;
183   exec->GetTexParameteriv = _mesa_GetTexParameteriv;
184   exec->Hint = _mesa_Hint;
185   exec->IndexMask = _mesa_IndexMask;
186   exec->InitNames = _mesa_InitNames;
187   exec->IsEnabled = _mesa_IsEnabled;
188   exec->IsList = _mesa_IsList;
189   exec->LightModelf = _mesa_LightModelf;
190   exec->LightModelfv = _mesa_LightModelfv;
191   exec->LightModeli = _mesa_LightModeli;
192   exec->LightModeliv = _mesa_LightModeliv;
193   exec->Lightf = _mesa_Lightf;
194   exec->Lightfv = _mesa_Lightfv;
195   exec->Lighti = _mesa_Lighti;
196   exec->Lightiv = _mesa_Lightiv;
197   exec->LineStipple = _mesa_LineStipple;
198   exec->LineWidth = _mesa_LineWidth;
199   exec->ListBase = _mesa_ListBase;
200   exec->LoadIdentity = _mesa_LoadIdentity;
201   exec->LoadMatrixd = _mesa_LoadMatrixd;
202   exec->LoadMatrixf = _mesa_LoadMatrixf;
203   exec->LoadName = _mesa_LoadName;
204   exec->LogicOp = _mesa_LogicOp;
205   exec->Map1d = _mesa_Map1d;
206   exec->Map1f = _mesa_Map1f;
207   exec->Map2d = _mesa_Map2d;
208   exec->Map2f = _mesa_Map2f;
209   exec->MapGrid1d = _mesa_MapGrid1d;
210   exec->MapGrid1f = _mesa_MapGrid1f;
211   exec->MapGrid2d = _mesa_MapGrid2d;
212   exec->MapGrid2f = _mesa_MapGrid2f;
213   exec->MatrixMode = _mesa_MatrixMode;
214   exec->MultMatrixd = _mesa_MultMatrixd;
215   exec->MultMatrixf = _mesa_MultMatrixf;
216   exec->NewList = _mesa_NewList;
217   exec->Ortho = _mesa_Ortho;
218   exec->PassThrough = _mesa_PassThrough;
219   exec->PixelMapfv = _mesa_PixelMapfv;
220   exec->PixelMapuiv = _mesa_PixelMapuiv;
221   exec->PixelMapusv = _mesa_PixelMapusv;
222   exec->PixelStoref = _mesa_PixelStoref;
223   exec->PixelStorei = _mesa_PixelStorei;
224   exec->PixelTransferf = _mesa_PixelTransferf;
225   exec->PixelTransferi = _mesa_PixelTransferi;
226   exec->PixelZoom = _mesa_PixelZoom;
227   exec->PointSize = _mesa_PointSize;
228   exec->PolygonMode = _mesa_PolygonMode;
229   exec->PolygonOffset = _mesa_PolygonOffset;
230   exec->PolygonStipple = _mesa_PolygonStipple;
231   exec->PopAttrib = _mesa_PopAttrib;
232   exec->PopMatrix = _mesa_PopMatrix;
233   exec->PopName = _mesa_PopName;
234   exec->PushAttrib = _mesa_PushAttrib;
235   exec->PushMatrix = _mesa_PushMatrix;
236   exec->PushName = _mesa_PushName;
237   exec->RasterPos2d = _mesa_RasterPos2d;
238   exec->RasterPos2dv = _mesa_RasterPos2dv;
239   exec->RasterPos2f = _mesa_RasterPos2f;
240   exec->RasterPos2fv = _mesa_RasterPos2fv;
241   exec->RasterPos2i = _mesa_RasterPos2i;
242   exec->RasterPos2iv = _mesa_RasterPos2iv;
243   exec->RasterPos2s = _mesa_RasterPos2s;
244   exec->RasterPos2sv = _mesa_RasterPos2sv;
245   exec->RasterPos3d = _mesa_RasterPos3d;
246   exec->RasterPos3dv = _mesa_RasterPos3dv;
247   exec->RasterPos3f = _mesa_RasterPos3f;
248   exec->RasterPos3fv = _mesa_RasterPos3fv;
249   exec->RasterPos3i = _mesa_RasterPos3i;
250   exec->RasterPos3iv = _mesa_RasterPos3iv;
251   exec->RasterPos3s = _mesa_RasterPos3s;
252   exec->RasterPos3sv = _mesa_RasterPos3sv;
253   exec->RasterPos4d = _mesa_RasterPos4d;
254   exec->RasterPos4dv = _mesa_RasterPos4dv;
255   exec->RasterPos4f = _mesa_RasterPos4f;
256   exec->RasterPos4fv = _mesa_RasterPos4fv;
257   exec->RasterPos4i = _mesa_RasterPos4i;
258   exec->RasterPos4iv = _mesa_RasterPos4iv;
259   exec->RasterPos4s = _mesa_RasterPos4s;
260   exec->RasterPos4sv = _mesa_RasterPos4sv;
261   exec->ReadBuffer = _mesa_ReadBuffer;
262   exec->ReadPixels = _mesa_ReadPixels;
263   exec->RenderMode = _mesa_RenderMode;
264   exec->Rotated = _mesa_Rotated;
265   exec->Rotatef = _mesa_Rotatef;
266   exec->Scaled = _mesa_Scaled;
267   exec->Scalef = _mesa_Scalef;
268   exec->Scissor = _mesa_Scissor;
269   exec->SecondaryColorPointerEXT = _mesa_SecondaryColorPointerEXT;
270   exec->SelectBuffer = _mesa_SelectBuffer;
271   exec->ShadeModel = _mesa_ShadeModel;
272   exec->StencilFunc = _mesa_StencilFunc;
273   exec->StencilMask = _mesa_StencilMask;
274   exec->StencilOp = _mesa_StencilOp;
275   exec->TexEnvf = _mesa_TexEnvf;
276   exec->TexEnvfv = _mesa_TexEnvfv;
277   exec->TexEnvi = _mesa_TexEnvi;
278   exec->TexEnviv = _mesa_TexEnviv;
279   exec->TexGend = _mesa_TexGend;
280   exec->TexGendv = _mesa_TexGendv;
281   exec->TexGenf = _mesa_TexGenf;
282   exec->TexGenfv = _mesa_TexGenfv;
283   exec->TexGeni = _mesa_TexGeni;
284   exec->TexGeniv = _mesa_TexGeniv;
285   exec->TexImage1D = _mesa_TexImage1D;
286   exec->TexImage2D = _mesa_TexImage2D;
287   exec->TexParameterf = _mesa_TexParameterf;
288   exec->TexParameterfv = _mesa_TexParameterfv;
289   exec->TexParameteri = _mesa_TexParameteri;
290   exec->TexParameteriv = _mesa_TexParameteriv;
291   exec->Translated = _mesa_Translated;
292   exec->Translatef = _mesa_Translatef;
293   exec->Viewport = _mesa_Viewport;
294
295   /* 1.1 */
296   exec->AreTexturesResident = _mesa_AreTexturesResident;
297   exec->AreTexturesResidentEXT = _mesa_AreTexturesResident;
298   exec->BindTexture = _mesa_BindTexture;
299   exec->ColorPointer = _mesa_ColorPointer;
300   exec->CopyTexImage1D = _mesa_CopyTexImage1D;
301   exec->CopyTexImage2D = _mesa_CopyTexImage2D;
302   exec->CopyTexSubImage1D = _mesa_CopyTexSubImage1D;
303   exec->CopyTexSubImage2D = _mesa_CopyTexSubImage2D;
304   exec->DeleteTextures = _mesa_DeleteTextures;
305   exec->DisableClientState = _mesa_DisableClientState;
306   exec->EdgeFlagPointer = _mesa_EdgeFlagPointer;
307   exec->EnableClientState = _mesa_EnableClientState;
308   exec->GenTextures = _mesa_GenTextures;
309   exec->GenTexturesEXT = _mesa_GenTextures;
310   exec->GetPointerv = _mesa_GetPointerv;
311   exec->IndexPointer = _mesa_IndexPointer;
312   exec->InterleavedArrays = _mesa_InterleavedArrays;
313   exec->IsTexture = _mesa_IsTexture;
314   exec->IsTextureEXT = _mesa_IsTexture;
315   exec->NormalPointer = _mesa_NormalPointer;
316   exec->PopClientAttrib = _mesa_PopClientAttrib;
317   exec->PrioritizeTextures = _mesa_PrioritizeTextures;
318   exec->PushClientAttrib = _mesa_PushClientAttrib;
319   exec->TexCoordPointer = _mesa_TexCoordPointer;
320   exec->TexSubImage1D = _mesa_TexSubImage1D;
321   exec->TexSubImage2D = _mesa_TexSubImage2D;
322   exec->VertexPointer = _mesa_VertexPointer;
323
324   /* 1.2 */
325   exec->CopyTexSubImage3D = _mesa_CopyTexSubImage3D;
326   exec->TexImage3D = _mesa_TexImage3D;
327   exec->TexSubImage3D = _mesa_TexSubImage3D;
328
329   /* OpenGL 1.2  GL_ARB_imaging */
330   exec->BlendColor = _mesa_BlendColor;
331   exec->BlendEquation = _mesa_BlendEquation;
332   exec->ColorSubTable = _mesa_ColorSubTable;
333   exec->ColorTable = _mesa_ColorTable;
334   exec->ColorTableParameterfv = _mesa_ColorTableParameterfv;
335   exec->ColorTableParameteriv = _mesa_ColorTableParameteriv;
336   exec->ConvolutionFilter1D = _mesa_ConvolutionFilter1D;
337   exec->ConvolutionFilter2D = _mesa_ConvolutionFilter2D;
338   exec->ConvolutionParameterf = _mesa_ConvolutionParameterf;
339   exec->ConvolutionParameterfv = _mesa_ConvolutionParameterfv;
340   exec->ConvolutionParameteri = _mesa_ConvolutionParameteri;
341   exec->ConvolutionParameteriv = _mesa_ConvolutionParameteriv;
342   exec->CopyColorSubTable = _mesa_CopyColorSubTable;
343   exec->CopyColorTable = _mesa_CopyColorTable;
344   exec->CopyConvolutionFilter1D = _mesa_CopyConvolutionFilter1D;
345   exec->CopyConvolutionFilter2D = _mesa_CopyConvolutionFilter2D;
346   exec->GetColorTable = _mesa_GetColorTable;
347   exec->GetColorTableEXT = _mesa_GetColorTable;
348   exec->GetColorTableParameterfv = _mesa_GetColorTableParameterfv;
349   exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
350   exec->GetColorTableParameteriv = _mesa_GetColorTableParameteriv;
351   exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
352   exec->GetConvolutionFilter = _mesa_GetConvolutionFilter;
353   exec->GetConvolutionFilterEXT = _mesa_GetConvolutionFilter;
354   exec->GetConvolutionParameterfv = _mesa_GetConvolutionParameterfv;
355   exec->GetConvolutionParameterfvEXT = _mesa_GetConvolutionParameterfv;
356   exec->GetConvolutionParameteriv = _mesa_GetConvolutionParameteriv;
357   exec->GetConvolutionParameterivEXT = _mesa_GetConvolutionParameteriv;
358   exec->GetHistogram = _mesa_GetHistogram;
359   exec->GetHistogramEXT = _mesa_GetHistogram;
360   exec->GetHistogramParameterfv = _mesa_GetHistogramParameterfv;
361   exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
362   exec->GetHistogramParameteriv = _mesa_GetHistogramParameteriv;
363   exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
364   exec->GetMinmax = _mesa_GetMinmax;
365   exec->GetMinmaxEXT = _mesa_GetMinmax;
366   exec->GetMinmaxParameterfv = _mesa_GetMinmaxParameterfv;
367   exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
368   exec->GetMinmaxParameteriv = _mesa_GetMinmaxParameteriv;
369   exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
370   exec->GetSeparableFilter = _mesa_GetSeparableFilter;
371   exec->GetSeparableFilterEXT = _mesa_GetSeparableFilter;
372   exec->Histogram = _mesa_Histogram;
373   exec->Minmax = _mesa_Minmax;
374   exec->ResetHistogram = _mesa_ResetHistogram;
375   exec->ResetMinmax = _mesa_ResetMinmax;
376   exec->SeparableFilter2D = _mesa_SeparableFilter2D;
377
378   /* 2. GL_EXT_blend_color */
379#if 0
380   exec->BlendColorEXT = _mesa_BlendColorEXT;
381#endif
382
383   /* 3. GL_EXT_polygon_offset */
384   exec->PolygonOffsetEXT = _mesa_PolygonOffsetEXT;
385
386   /* 6. GL_EXT_texture3d */
387#if 0
388   exec->CopyTexSubImage3DEXT = _mesa_CopyTexSubImage3D;
389   exec->TexImage3DEXT = _mesa_TexImage3DEXT;
390   exec->TexSubImage3DEXT = _mesa_TexSubImage3D;
391#endif
392
393   /* 11. GL_EXT_histogram */
394   exec->GetHistogramEXT = _mesa_GetHistogram;
395   exec->GetHistogramParameterfvEXT = _mesa_GetHistogramParameterfv;
396   exec->GetHistogramParameterivEXT = _mesa_GetHistogramParameteriv;
397   exec->GetMinmaxEXT = _mesa_GetMinmax;
398   exec->GetMinmaxParameterfvEXT = _mesa_GetMinmaxParameterfv;
399   exec->GetMinmaxParameterivEXT = _mesa_GetMinmaxParameteriv;
400
401   /* ?. GL_SGIX_pixel_texture */
402   exec->PixelTexGenSGIX = _mesa_PixelTexGenSGIX;
403
404   /* 15. GL_SGIS_pixel_texture */
405   exec->PixelTexGenParameteriSGIS = _mesa_PixelTexGenParameteriSGIS;
406   exec->PixelTexGenParameterivSGIS = _mesa_PixelTexGenParameterivSGIS;
407   exec->PixelTexGenParameterfSGIS = _mesa_PixelTexGenParameterfSGIS;
408   exec->PixelTexGenParameterfvSGIS = _mesa_PixelTexGenParameterfvSGIS;
409   exec->GetPixelTexGenParameterivSGIS = _mesa_GetPixelTexGenParameterivSGIS;
410   exec->GetPixelTexGenParameterfvSGIS = _mesa_GetPixelTexGenParameterfvSGIS;
411
412   /* 30. GL_EXT_vertex_array */
413   exec->ColorPointerEXT = _mesa_ColorPointerEXT;
414   exec->EdgeFlagPointerEXT = _mesa_EdgeFlagPointerEXT;
415   exec->IndexPointerEXT = _mesa_IndexPointerEXT;
416   exec->NormalPointerEXT = _mesa_NormalPointerEXT;
417   exec->TexCoordPointerEXT = _mesa_TexCoordPointerEXT;
418   exec->VertexPointerEXT = _mesa_VertexPointerEXT;
419
420   /* 37. GL_EXT_blend_minmax */
421#if 0
422   exec->BlendEquationEXT = _mesa_BlendEquationEXT;
423#endif
424
425   /* 54. GL_EXT_point_parameters */
426   exec->PointParameterfEXT = _mesa_PointParameterfEXT;
427   exec->PointParameterfvEXT = _mesa_PointParameterfvEXT;
428
429   /* 78. GL_EXT_paletted_texture */
430#if 0
431   exec->ColorTableEXT = _mesa_ColorTableEXT;
432   exec->ColorSubTableEXT = _mesa_ColorSubTableEXT;
433#endif
434   exec->GetColorTableEXT = _mesa_GetColorTable;
435   exec->GetColorTableParameterfvEXT = _mesa_GetColorTableParameterfv;
436   exec->GetColorTableParameterivEXT = _mesa_GetColorTableParameteriv;
437
438   /* 97. GL_EXT_compiled_vertex_array */
439   exec->LockArraysEXT = _mesa_LockArraysEXT;
440   exec->UnlockArraysEXT = _mesa_UnlockArraysEXT;
441
442   /* 148. GL_EXT_multi_draw_arrays */
443   exec->MultiDrawArraysEXT = _mesa_MultiDrawArraysEXT;
444   exec->MultiDrawElementsEXT = _mesa_MultiDrawElementsEXT;
445
446   /* 173. GL_INGR_blend_func_separate */
447   exec->BlendFuncSeparateEXT = _mesa_BlendFuncSeparateEXT;
448
449   /* 196. GL_MESA_resize_buffers */
450   exec->ResizeBuffersMESA = _mesa_ResizeBuffersMESA;
451
452   /* 197. GL_MESA_window_pos */
453   exec->WindowPos2dMESA = _mesa_WindowPos2dMESA;
454   exec->WindowPos2dvMESA = _mesa_WindowPos2dvMESA;
455   exec->WindowPos2fMESA = _mesa_WindowPos2fMESA;
456   exec->WindowPos2fvMESA = _mesa_WindowPos2fvMESA;
457   exec->WindowPos2iMESA = _mesa_WindowPos2iMESA;
458   exec->WindowPos2ivMESA = _mesa_WindowPos2ivMESA;
459   exec->WindowPos2sMESA = _mesa_WindowPos2sMESA;
460   exec->WindowPos2svMESA = _mesa_WindowPos2svMESA;
461   exec->WindowPos3dMESA = _mesa_WindowPos3dMESA;
462   exec->WindowPos3dvMESA = _mesa_WindowPos3dvMESA;
463   exec->WindowPos3fMESA = _mesa_WindowPos3fMESA;
464   exec->WindowPos3fvMESA = _mesa_WindowPos3fvMESA;
465   exec->WindowPos3iMESA = _mesa_WindowPos3iMESA;
466   exec->WindowPos3ivMESA = _mesa_WindowPos3ivMESA;
467   exec->WindowPos3sMESA = _mesa_WindowPos3sMESA;
468   exec->WindowPos3svMESA = _mesa_WindowPos3svMESA;
469   exec->WindowPos4dMESA = _mesa_WindowPos4dMESA;
470   exec->WindowPos4dvMESA = _mesa_WindowPos4dvMESA;
471   exec->WindowPos4fMESA = _mesa_WindowPos4fMESA;
472   exec->WindowPos4fvMESA = _mesa_WindowPos4fvMESA;
473   exec->WindowPos4iMESA = _mesa_WindowPos4iMESA;
474   exec->WindowPos4ivMESA = _mesa_WindowPos4ivMESA;
475   exec->WindowPos4sMESA = _mesa_WindowPos4sMESA;
476   exec->WindowPos4svMESA = _mesa_WindowPos4svMESA;
477
478   /* 233. GL_NV_vertex_program */
479#if FEATURE_NV_vertex_program
480   exec->BindProgramNV = _mesa_BindProgramNV;
481   exec->DeleteProgramsNV = _mesa_DeleteProgramsNV;
482   exec->ExecuteProgramNV = _mesa_ExecuteProgramNV;
483   exec->GenProgramsNV = _mesa_GenProgramsNV;
484   exec->AreProgramsResidentNV = _mesa_AreProgramsResidentNV;
485   exec->RequestResidentProgramsNV = _mesa_RequestResidentProgramsNV;
486   exec->GetProgramParameterfvNV = _mesa_GetProgramParameterfvNV;
487   exec->GetProgramParameterdvNV = _mesa_GetProgramParameterdvNV;
488   exec->GetProgramivNV = _mesa_GetProgramivNV;
489   exec->GetProgramStringNV = _mesa_GetProgramStringNV;
490   exec->GetTrackMatrixivNV = _mesa_GetTrackMatrixivNV;
491   exec->GetVertexAttribdvNV = _mesa_GetVertexAttribdvNV;
492   exec->GetVertexAttribfvNV = _mesa_GetVertexAttribfvNV;
493   exec->GetVertexAttribivNV = _mesa_GetVertexAttribivNV;
494   exec->GetVertexAttribPointervNV = _mesa_GetVertexAttribPointervNV;
495   exec->IsProgramNV = _mesa_IsProgramNV;
496   exec->LoadProgramNV = _mesa_LoadProgramNV;
497   exec->ProgramParameter4dNV = _mesa_ProgramParameter4dNV;
498   exec->ProgramParameter4dvNV = _mesa_ProgramParameter4dvNV;
499   exec->ProgramParameter4fNV = _mesa_ProgramParameter4fNV;
500   exec->ProgramParameter4fvNV = _mesa_ProgramParameter4fvNV;
501   exec->ProgramParameters4dvNV = _mesa_ProgramParameters4dvNV;
502   exec->ProgramParameters4fvNV = _mesa_ProgramParameters4fvNV;
503   exec->TrackMatrixNV = _mesa_TrackMatrixNV;
504   exec->VertexAttribPointerNV = _mesa_VertexAttribPointerNV;
505#endif
506
507#if 0 && FEATURE_NV_fragment_program
508   exec->ProgramNamedParameter4fNV = _mesa_ProgramNamedParameter4fNV;
509   exec->ProgramNamedParameter4dNV = _mesa_ProgramNamedParameter4dNV;
510   exec->ProgramNamedParameter4fvNV = _mesa_ProgramNamedParameter4fvNV;
511   exec->ProgramNamedParameter4dvNV = _mesa_ProgramNamedParameter4dvNV;
512   exec->GetProgramNamedParameterfvNV = _mesa_GetProgramNamedParameterfvNV;
513   exec->GetProgramNamedParameterdvNV = _mesa_GetProgramNamedParameterdvNV;
514   exec->ProgramLocalParameter4dARB = _mesa_ProgramLocalParameter4dARB;
515   exec->ProgramLocalParameter4dvARB = _mesa_ProgramLocalParameter4dvARB;
516   exec->ProgramLocalParameter4fARB = _mesa_ProgramLocalParameter4fARB;
517   exec->ProgramLocalParameter4fvARB = _mesa_ProgramLocalParameter4fvARB;
518   exec->GetProgramLocalParameterdvARB = _mesa_GetProgramLocalParameterdvARB;
519   exec->GetProgramLocalParameterfvARB = _mesa_GetProgramLocalParameterfvARB;
520#endif
521
522   /* 262. GL_NV_point_sprite */
523   exec->PointParameteriNV = _mesa_PointParameteriNV;
524   exec->PointParameterivNV = _mesa_PointParameterivNV;
525
526   /* 268. GL_EXT_stencil_two_side */
527   exec->ActiveStencilFaceEXT = _mesa_ActiveStencilFaceEXT;
528
529   /* ARB 1. GL_ARB_multitexture */
530   exec->ActiveTextureARB = _mesa_ActiveTextureARB;
531   exec->ClientActiveTextureARB = _mesa_ClientActiveTextureARB;
532
533   /* ARB 3. GL_ARB_transpose_matrix */
534   exec->LoadTransposeMatrixdARB = _mesa_LoadTransposeMatrixdARB;
535   exec->LoadTransposeMatrixfARB = _mesa_LoadTransposeMatrixfARB;
536   exec->MultTransposeMatrixdARB = _mesa_MultTransposeMatrixdARB;
537   exec->MultTransposeMatrixfARB = _mesa_MultTransposeMatrixfARB;
538
539   /* ARB 5. GL_ARB_multisample */
540   exec->SampleCoverageARB = _mesa_SampleCoverageARB;
541
542   /* ARB 12. GL_ARB_texture_compression */
543   exec->CompressedTexImage3DARB = _mesa_CompressedTexImage3DARB;
544   exec->CompressedTexImage2DARB = _mesa_CompressedTexImage2DARB;
545   exec->CompressedTexImage1DARB = _mesa_CompressedTexImage1DARB;
546   exec->CompressedTexSubImage3DARB = _mesa_CompressedTexSubImage3DARB;
547   exec->CompressedTexSubImage2DARB = _mesa_CompressedTexSubImage2DARB;
548   exec->CompressedTexSubImage1DARB = _mesa_CompressedTexSubImage1DARB;
549   exec->GetCompressedTexImageARB = _mesa_GetCompressedTexImageARB;
550
551   /* ARB 14. GL_ARB_point_parameters */
552   /* reuse EXT_point_parameters functions */
553}
554
555
556
557/**********************************************************************/
558/*****                   State update logic                       *****/
559/**********************************************************************/
560
561
562/*
563 * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
564 * in ctx->_TriangleCaps if needed.
565 */
566static void
567update_polygon( GLcontext *ctx )
568{
569   ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
570
571   if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
572      ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
573
574   /* Any Polygon offsets enabled? */
575   if (ctx->Polygon.OffsetPoint ||
576       ctx->Polygon.OffsetLine ||
577       ctx->Polygon.OffsetFill) {
578      ctx->_TriangleCaps |= DD_TRI_OFFSET;
579   }
580}
581
582static void
583calculate_model_project_matrix( GLcontext *ctx )
584{
585   _math_matrix_mul_matrix( &ctx->_ModelProjectMatrix,
586                            ctx->ProjectionMatrixStack.Top,
587                            ctx->ModelviewMatrixStack.Top );
588
589   _math_matrix_analyse( &ctx->_ModelProjectMatrix );
590}
591
592static void
593update_modelview_scale( GLcontext *ctx )
594{
595   ctx->_ModelViewInvScale = 1.0F;
596   if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_UNIFORM_SCALE |
597			       MAT_FLAG_GENERAL_SCALE |
598			       MAT_FLAG_GENERAL_3D |
599			       MAT_FLAG_GENERAL) ) {
600      const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
601      GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
602      if (f < 1e-12) f = 1.0;
603      if (ctx->_NeedEyeCoords)
604	 ctx->_ModelViewInvScale = 1.0F / SQRTF(f);
605      else
606	 ctx->_ModelViewInvScale = SQRTF(f);
607   }
608}
609
610
611/* Bring uptodate any state that relies on _NeedEyeCoords.
612 */
613static void
614update_tnl_spaces( GLcontext *ctx, GLuint oldneedeyecoords )
615{
616   /* Check if the truth-value interpretations of the bitfields have
617    * changed:
618    */
619   if ((oldneedeyecoords == 0) != (ctx->_NeedEyeCoords == 0)) {
620      /* Recalculate all state that depends on _NeedEyeCoords.
621       */
622      update_modelview_scale(ctx);
623      _mesa_compute_light_positions( ctx );
624
625      if (ctx->Driver.LightingSpaceChange)
626	 ctx->Driver.LightingSpaceChange( ctx );
627   }
628   else {
629      GLuint new_state = ctx->NewState;
630
631      /* Recalculate that same state only if it has been invalidated
632       * by other statechanges.
633       */
634      if (new_state & _NEW_MODELVIEW)
635	 update_modelview_scale(ctx);
636
637      if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW))
638	 _mesa_compute_light_positions( ctx );
639   }
640}
641
642
643static void
644update_drawbuffer( GLcontext *ctx )
645{
646   ctx->DrawBuffer->_Xmin = 0;
647   ctx->DrawBuffer->_Ymin = 0;
648   ctx->DrawBuffer->_Xmax = ctx->DrawBuffer->Width;
649   ctx->DrawBuffer->_Ymax = ctx->DrawBuffer->Height;
650   if (ctx->Scissor.Enabled) {
651      if (ctx->Scissor.X > ctx->DrawBuffer->_Xmin) {
652	 ctx->DrawBuffer->_Xmin = ctx->Scissor.X;
653      }
654      if (ctx->Scissor.Y > ctx->DrawBuffer->_Ymin) {
655	 ctx->DrawBuffer->_Ymin = ctx->Scissor.Y;
656      }
657      if (ctx->Scissor.X + ctx->Scissor.Width < ctx->DrawBuffer->_Xmax) {
658	 ctx->DrawBuffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
659      }
660      if (ctx->Scissor.Y + ctx->Scissor.Height < ctx->DrawBuffer->_Ymax) {
661	 ctx->DrawBuffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
662      }
663   }
664}
665
666
667/* NOTE: This routine references Tranform attribute values to compute
668 * userclip positions in clip space, but is only called on
669 * _NEW_PROJECTION.  The _mesa_ClipPlane() function keeps these values
670 * up to date across changes to the Transform attributes.
671 */
672static void
673update_projection( GLcontext *ctx )
674{
675   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
676
677   /* Recompute clip plane positions in clipspace.  This is also done
678    * in _mesa_ClipPlane().
679    */
680   if (ctx->Transform.ClipPlanesEnabled) {
681      GLuint p;
682      for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
683	 if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
684	    _mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
685				 ctx->Transform.EyeUserPlane[p],
686				 ctx->ProjectionMatrixStack.Top->inv );
687	 }
688      }
689   }
690}
691
692
693/*
694 * Return a bitmask of IMAGE_*_BIT flags which to indicate which
695 * pixel transfer operations are enabled.
696 */
697static void
698update_image_transfer_state(GLcontext *ctx)
699{
700   GLuint mask = 0;
701
702   if (ctx->Pixel.RedScale   != 1.0F || ctx->Pixel.RedBias   != 0.0F ||
703       ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
704       ctx->Pixel.BlueScale  != 1.0F || ctx->Pixel.BlueBias  != 0.0F ||
705       ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
706      mask |= IMAGE_SCALE_BIAS_BIT;
707
708   if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
709      mask |= IMAGE_SHIFT_OFFSET_BIT;
710
711   if (ctx->Pixel.MapColorFlag)
712      mask |= IMAGE_MAP_COLOR_BIT;
713
714   if (ctx->Pixel.ColorTableEnabled)
715      mask |= IMAGE_COLOR_TABLE_BIT;
716
717   if (ctx->Pixel.Convolution1DEnabled ||
718       ctx->Pixel.Convolution2DEnabled ||
719       ctx->Pixel.Separable2DEnabled) {
720      mask |= IMAGE_CONVOLUTION_BIT;
721      if (ctx->Pixel.PostConvolutionScale[0] != 1.0F ||
722          ctx->Pixel.PostConvolutionScale[1] != 1.0F ||
723          ctx->Pixel.PostConvolutionScale[2] != 1.0F ||
724          ctx->Pixel.PostConvolutionScale[3] != 1.0F ||
725          ctx->Pixel.PostConvolutionBias[0] != 0.0F ||
726          ctx->Pixel.PostConvolutionBias[1] != 0.0F ||
727          ctx->Pixel.PostConvolutionBias[2] != 0.0F ||
728          ctx->Pixel.PostConvolutionBias[3] != 0.0F) {
729         mask |= IMAGE_POST_CONVOLUTION_SCALE_BIAS;
730      }
731   }
732
733   if (ctx->Pixel.PostConvolutionColorTableEnabled)
734      mask |= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT;
735
736   if (ctx->ColorMatrixStack.Top->type != MATRIX_IDENTITY ||
737       ctx->Pixel.PostColorMatrixScale[0] != 1.0F ||
738       ctx->Pixel.PostColorMatrixBias[0]  != 0.0F ||
739       ctx->Pixel.PostColorMatrixScale[1] != 1.0F ||
740       ctx->Pixel.PostColorMatrixBias[1]  != 0.0F ||
741       ctx->Pixel.PostColorMatrixScale[2] != 1.0F ||
742       ctx->Pixel.PostColorMatrixBias[2]  != 0.0F ||
743       ctx->Pixel.PostColorMatrixScale[3] != 1.0F ||
744       ctx->Pixel.PostColorMatrixBias[3]  != 0.0F)
745      mask |= IMAGE_COLOR_MATRIX_BIT;
746
747   if (ctx->Pixel.PostColorMatrixColorTableEnabled)
748      mask |= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT;
749
750   if (ctx->Pixel.HistogramEnabled)
751      mask |= IMAGE_HISTOGRAM_BIT;
752
753   if (ctx->Pixel.MinMaxEnabled)
754      mask |= IMAGE_MIN_MAX_BIT;
755
756   ctx->_ImageTransferState = mask;
757}
758
759
760
761
762/* Note: This routine refers to derived texture attribute values to
763 * compute the ENABLE_TEXMAT flags, but is only called on
764 * _NEW_TEXTURE_MATRIX.  On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
765 * flags are updated by _mesa_update_textures(), below.
766 *
767 * If both TEXTURE and TEXTURE_MATRIX change at once, these values
768 * will be computed twice.
769 */
770static void
771update_texture_matrices( GLcontext *ctx )
772{
773   GLuint i;
774
775   ctx->Texture._TexMatEnabled = 0;
776
777   for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
778      if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
779	 _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
780
781	 if (ctx->Texture.Unit[i]._ReallyEnabled &&
782	     ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
783	    ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
784
785	 if (ctx->Driver.TextureMatrix)
786	    ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
787      }
788   }
789}
790
791
792/* Note: This routine refers to derived texture matrix values to
793 * compute the ENABLE_TEXMAT flags, but is only called on
794 * _NEW_TEXTURE.  On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
795 * flags are updated by _mesa_update_texture_matrices, above.
796 *
797 * If both TEXTURE and TEXTURE_MATRIX change at once, these values
798 * will be computed twice.
799 */
800static void
801update_texture_state( GLcontext *ctx )
802{
803   GLuint unit;
804
805   ctx->Texture._EnabledUnits = 0;
806   ctx->Texture._GenFlags = 0;
807   ctx->_NeedNormals &= ~NEED_NORMALS_TEXGEN;
808   ctx->_NeedEyeCoords &= ~NEED_EYE_TEXGEN;
809   ctx->Texture._TexMatEnabled = 0;
810   ctx->Texture._TexGenEnabled = 0;
811
812   /* Update texture unit state.
813    */
814   for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
815      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
816
817      texUnit->_ReallyEnabled = 0;
818      texUnit->_GenFlags = 0;
819
820      if (!texUnit->Enabled)
821	 continue;
822
823      /* Look for the highest-priority texture target that's enabled and
824       * complete.  That's the one we'll use for texturing.
825       */
826      if (texUnit->Enabled & TEXTURE_CUBE_BIT) {
827         struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
828         if (!texObj->Complete) {
829            _mesa_test_texobj_completeness(ctx, texObj);
830         }
831         if (texObj->Complete) {
832            texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
833            texUnit->_Current = texObj;
834         }
835      }
836
837      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_3D_BIT)) {
838         struct gl_texture_object *texObj = texUnit->Current3D;
839         if (!texObj->Complete) {
840            _mesa_test_texobj_completeness(ctx, texObj);
841         }
842         if (texObj->Complete) {
843            texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
844            texUnit->_Current = texObj;
845         }
846      }
847
848      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_RECT_BIT)) {
849         struct gl_texture_object *texObj = texUnit->CurrentRect;
850         if (!texObj->Complete) {
851            _mesa_test_texobj_completeness(ctx, texObj);
852         }
853         if (texObj->Complete) {
854            texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
855            texUnit->_Current = texObj;
856         }
857      }
858
859      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_2D_BIT)) {
860         struct gl_texture_object *texObj = texUnit->Current2D;
861         if (!texObj->Complete) {
862            _mesa_test_texobj_completeness(ctx, texObj);
863         }
864         if (texObj->Complete) {
865            texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
866            texUnit->_Current = texObj;
867         }
868      }
869
870      if (!texUnit->_ReallyEnabled && (texUnit->Enabled & TEXTURE_1D_BIT)) {
871         struct gl_texture_object *texObj = texUnit->Current1D;
872         if (!texObj->Complete) {
873            _mesa_test_texobj_completeness(ctx, texObj);
874         }
875         if (texObj->Complete) {
876            texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
877            texUnit->_Current = texObj;
878         }
879      }
880
881      if (!texUnit->_ReallyEnabled) {
882	 texUnit->_Current = NULL;
883	 continue;
884      }
885
886      if (texUnit->_ReallyEnabled)
887         ctx->Texture._EnabledUnits |= (1 << unit);
888
889      if (texUnit->TexGenEnabled) {
890	 if (texUnit->TexGenEnabled & S_BIT) {
891	    texUnit->_GenFlags |= texUnit->_GenBitS;
892	 }
893	 if (texUnit->TexGenEnabled & T_BIT) {
894	    texUnit->_GenFlags |= texUnit->_GenBitT;
895	 }
896	 if (texUnit->TexGenEnabled & Q_BIT) {
897	    texUnit->_GenFlags |= texUnit->_GenBitQ;
898	 }
899	 if (texUnit->TexGenEnabled & R_BIT) {
900	    texUnit->_GenFlags |= texUnit->_GenBitR;
901	 }
902
903	 ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
904	 ctx->Texture._GenFlags |= texUnit->_GenFlags;
905      }
906
907      if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
908	 ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
909   }
910
911   if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS) {
912      ctx->_NeedNormals |= NEED_NORMALS_TEXGEN;
913      ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
914   }
915
916   if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) {
917      ctx->_NeedEyeCoords |= NEED_EYE_TEXGEN;
918   }
919}
920
921
922
923/*
924 * If ctx->NewState is non-zero then this function MUST be called before
925 * rendering any primitive.  Basically, function pointers and miscellaneous
926 * flags are updated to reflect the current state of the state machine.
927 *
928 * The above constraint is now maintained largely by the two Exec
929 * dispatch tables, which trigger the appropriate flush on transition
930 * between State and Geometry modes.
931 *
932 * Special care is taken with the derived value _NeedEyeCoords.  This
933 * is a bitflag which is updated with information from a number of
934 * attribute groups (MODELVIEW, LIGHT, TEXTURE).  A lot of derived
935 * state references this value, and must be treated with care to
936 * ensure that updates are done correctly.  All state dependent on
937 * _NeedEyeCoords is calculated from within _mesa_update_tnl_spaces(),
938 * and from nowhere else.
939 */
940void _mesa_update_state( GLcontext *ctx )
941{
942   const GLuint new_state = ctx->NewState;
943   const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
944
945   if (MESA_VERBOSE & VERBOSE_STATE)
946      _mesa_print_state("_mesa_update_state", new_state);
947
948   if (new_state & _NEW_MODELVIEW)
949      _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
950
951   if (new_state & _NEW_PROJECTION)
952      update_projection( ctx );
953
954   if (new_state & _NEW_TEXTURE_MATRIX)
955      update_texture_matrices( ctx );
956
957   if (new_state & _NEW_COLOR_MATRIX)
958      _math_matrix_analyse( ctx->ColorMatrixStack.Top );
959
960   /* References ColorMatrix.type (derived above).
961    */
962   if (new_state & _IMAGE_NEW_TRANSFER_STATE)
963      update_image_transfer_state(ctx);
964
965   /* Contributes to NeedEyeCoords, NeedNormals.
966    */
967   if (new_state & _NEW_TEXTURE)
968      update_texture_state( ctx );
969
970   if (new_state & (_NEW_BUFFERS|_NEW_SCISSOR))
971      update_drawbuffer( ctx );
972
973   if (new_state & _NEW_POLYGON)
974      update_polygon( ctx );
975
976   /* Contributes to NeedEyeCoords, NeedNormals.
977    */
978   if (new_state & _NEW_LIGHT)
979      _mesa_update_lighting( ctx );
980
981   /* We can light in object space if the modelview matrix preserves
982    * lengths and relative angles.
983    */
984   if (new_state & (_NEW_MODELVIEW|_NEW_LIGHT)) {
985      ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT_MODELVIEW;
986      if (ctx->Light.Enabled &&
987	  !TEST_MAT_FLAGS( ctx->ModelviewMatrixStack.Top, MAT_FLAGS_LENGTH_PRESERVING))
988	    ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
989   }
990
991
992#if 0
993   /* XXX this is a bit of a hack.  We should be checking elsewhere if
994    * vertex program mode is enabled.  We set _NeedEyeCoords to zero to
995    * ensure that the combined modelview/projection matrix is computed
996    * in calculate_model_project_matrix().
997    */
998   if (ctx->VertexProgram.Enabled)
999      ctx->_NeedEyeCoords = 0;
1000   /* KW: it's now always computed.
1001    */
1002#endif
1003
1004   /* Keep ModelviewProject uptodate always to allow tnl
1005    * implementations that go model->clip even when eye is required.
1006    */
1007   if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
1008      calculate_model_project_matrix(ctx);
1009
1010   /* ctx->_NeedEyeCoords is now uptodate.
1011    *
1012    * If the truth value of this variable has changed, update for the
1013    * new lighting space and recompute the positions of lights and the
1014    * normal transform.
1015    *
1016    * If the lighting space hasn't changed, may still need to recompute
1017    * light positions & normal transforms for other reasons.
1018    */
1019   if (new_state & (_NEW_MODELVIEW |
1020		    _NEW_LIGHT |
1021		    _MESA_NEW_NEED_EYE_COORDS))
1022      update_tnl_spaces( ctx, oldneedeyecoords );
1023
1024   /*
1025    * Here the driver sets up all the ctx->Driver function pointers
1026    * to it's specific, private functions, and performs any
1027    * internal state management necessary, including invalidating
1028    * state of active modules.
1029    *
1030    * Set ctx->NewState to zero to avoid recursion if
1031    * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
1032    */
1033   ctx->NewState = 0;
1034   ctx->Driver.UpdateState(ctx, new_state);
1035   ctx->Array.NewState = 0;
1036
1037   /* At this point we can do some assertions to be sure the required
1038    * device driver function pointers are all initialized.
1039    */
1040   ASSERT(ctx->Driver.GetString);
1041   ASSERT(ctx->Driver.UpdateState);
1042   ASSERT(ctx->Driver.Clear);
1043   ASSERT(ctx->Driver.GetBufferSize);
1044   if (ctx->Visual.accumRedBits > 0) {
1045      ASSERT(ctx->Driver.Accum);
1046   }
1047   ASSERT(ctx->Driver.DrawPixels);
1048   ASSERT(ctx->Driver.ReadPixels);
1049   ASSERT(ctx->Driver.CopyPixels);
1050   ASSERT(ctx->Driver.Bitmap);
1051   ASSERT(ctx->Driver.ResizeBuffers);
1052   ASSERT(ctx->Driver.TexImage1D);
1053   ASSERT(ctx->Driver.TexImage2D);
1054   ASSERT(ctx->Driver.TexImage3D);
1055   ASSERT(ctx->Driver.TexSubImage1D);
1056   ASSERT(ctx->Driver.TexSubImage2D);
1057   ASSERT(ctx->Driver.TexSubImage3D);
1058   ASSERT(ctx->Driver.CopyTexImage1D);
1059   ASSERT(ctx->Driver.CopyTexImage2D);
1060   ASSERT(ctx->Driver.CopyTexSubImage1D);
1061   ASSERT(ctx->Driver.CopyTexSubImage2D);
1062   ASSERT(ctx->Driver.CopyTexSubImage3D);
1063   if (ctx->Extensions.ARB_texture_compression) {
1064#if 0  /* HW drivers need these, but not SW rasterizers */
1065      ASSERT(ctx->Driver.CompressedTexImage1D);
1066      ASSERT(ctx->Driver.CompressedTexImage2D);
1067      ASSERT(ctx->Driver.CompressedTexImage3D);
1068      ASSERT(ctx->Driver.CompressedTexSubImage1D);
1069      ASSERT(ctx->Driver.CompressedTexSubImage2D);
1070      ASSERT(ctx->Driver.CompressedTexSubImage3D);
1071#endif
1072   }
1073}
1074
1075/* Is this helpful?
1076 */
1077void
1078_mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag )
1079{
1080   if (flag)
1081      ctx->_NeedEyeCoords &= ~NEED_EYE_DRIVER;
1082   else
1083      ctx->_NeedEyeCoords |= NEED_EYE_DRIVER;
1084
1085   ctx->NewState |= _NEW_POINT;	/* one of the bits from
1086				 * _MESA_NEW_NEED_EYE_COORDS.
1087				 */
1088}
1089