xserver xkeyboard-config libX11 pixman mesa git update 24 Mar 2011

1 files changed, 734 insertions, 734 deletions

diff --git a/mesalib/src/mesa/main/state.c b/mesalib/src/mesa/main/state.c
index f50f2af1e..118ed1d28 100644
--- a/mesalib/src/mesa/main/state.c
+++ b/mesalib/src/mesa/main/state.c
@@ -1,734 +1,734 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.3

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file state.c

- * State management.

- * 

- * This file manages recalculation of derived values in struct gl_context.

- */

-

-

-#include "glheader.h"

-#include "mtypes.h"

-#include "context.h"

-#include "debug.h"

-#include "macros.h"

-#include "ffvertex_prog.h"

-#include "framebuffer.h"

-#include "light.h"

-#include "matrix.h"

-#include "pixel.h"

-#include "program/program.h"

-#include "program/prog_parameter.h"

-#include "state.h"

-#include "stencil.h"

-#include "texenvprogram.h"

-#include "texobj.h"

-#include "texstate.h"

-

-

-static void

-update_separate_specular(struct gl_context *ctx)

-{

-   if (_mesa_need_secondary_color(ctx))

-      ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;

-   else

-      ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;

-}

-

-

-/**

- * Compute the index of the last array element that can be safely accessed

- * in a vertex array.  We can really only do this when the array lives in

- * a VBO.

- * The array->_MaxElement field will be updated.

- * Later in glDrawArrays/Elements/etc we can do some bounds checking.

- */

-static void

-compute_max_element(struct gl_client_array *array)

-{

-   assert(array->Enabled);

-   if (array->BufferObj->Name) {

-      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;

-      GLsizeiptrARB obj_size = (GLsizeiptrARB) array->BufferObj->Size;

-

-      if (offset < obj_size) {

-	 array->_MaxElement = (obj_size - offset +

-			       array->StrideB -

-			       array->_ElementSize) / array->StrideB;

-      } else {

-	 array->_MaxElement = 0;

-      }

-   }

-   else {

-      /* user-space array, no idea how big it is */

-      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */

-   }

-}

-

-

-/**

- * Helper for update_arrays().

- * \return  min(current min, array->_MaxElement).

- */

-static GLuint

-update_min(GLuint min, struct gl_client_array *array)

-{

-   compute_max_element(array);

-   return MIN2(min, array->_MaxElement);

-}

-

-

-/**

- * Update ctx->Array._MaxElement (the max legal index into all enabled arrays).

- * Need to do this upon new array state or new buffer object state.

- */

-static void

-update_arrays( struct gl_context *ctx )

-{

-   struct gl_array_object *arrayObj = ctx->Array.ArrayObj;

-   GLuint i, min = ~0;

-

-   /* find min of _MaxElement values for all enabled arrays */

-

-   /* 0 */

-   if (ctx->VertexProgram._Current

-       && arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);

-   }

-   else if (arrayObj->Vertex.Enabled) {

-      min = update_min(min, &arrayObj->Vertex);

-   }

-

-   /* 1 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT]);

-   }

-   /* no conventional vertex weight array */

-

-   /* 2 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);

-   }

-   else if (arrayObj->Normal.Enabled) {

-      min = update_min(min, &arrayObj->Normal);

-   }

-

-   /* 3 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);

-   }

-   else if (arrayObj->Color.Enabled) {

-      min = update_min(min, &arrayObj->Color);

-   }

-

-   /* 4 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1]);

-   }

-   else if (arrayObj->SecondaryColor.Enabled) {

-      min = update_min(min, &arrayObj->SecondaryColor);

-   }

-

-   /* 5 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_FOG]);

-   }

-   else if (arrayObj->FogCoord.Enabled) {

-      min = update_min(min, &arrayObj->FogCoord);

-   }

-

-   /* 6 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX]);

-   }

-   else if (arrayObj->Index.Enabled) {

-      min = update_min(min, &arrayObj->Index);

-   }

-

-   /* 7 */

-   if (ctx->VertexProgram._Enabled

-       && arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled) {

-      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG]);

-   }

-

-   /* 8..15 */

-   for (i = VERT_ATTRIB_TEX0; i <= VERT_ATTRIB_TEX7; i++) {

-      if (ctx->VertexProgram._Enabled

-          && arrayObj->VertexAttrib[i].Enabled) {

-         min = update_min(min, &arrayObj->VertexAttrib[i]);

-      }

-      else if (i - VERT_ATTRIB_TEX0 < ctx->Const.MaxTextureCoordUnits

-               && arrayObj->TexCoord[i - VERT_ATTRIB_TEX0].Enabled) {

-         min = update_min(min, &arrayObj->TexCoord[i - VERT_ATTRIB_TEX0]);

-      }

-   }

-

-   /* 16..31 */

-   if (ctx->VertexProgram._Current) {

-      for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) {

-         if (arrayObj->VertexAttrib[i].Enabled) {

-            min = update_min(min, &arrayObj->VertexAttrib[i]);

-         }

-      }

-   }

-

-   if (arrayObj->EdgeFlag.Enabled) {

-      min = update_min(min, &arrayObj->EdgeFlag);

-   }

-

-   /* _MaxElement is one past the last legal array element */

-   arrayObj->_MaxElement = min;

-}

-

-

-/**

- * Update the following fields:

- *   ctx->VertexProgram._Enabled

- *   ctx->FragmentProgram._Enabled

- *   ctx->ATIFragmentShader._Enabled

- * This needs to be done before texture state validation.

- */

-static void

-update_program_enables(struct gl_context *ctx)

-{

-   /* These _Enabled flags indicate if the program is enabled AND valid. */

-   ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled

-      && ctx->VertexProgram.Current->Base.Instructions;

-   ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled

-      && ctx->FragmentProgram.Current->Base.Instructions;

-   ctx->ATIFragmentShader._Enabled = ctx->ATIFragmentShader.Enabled

-      && ctx->ATIFragmentShader.Current->Instructions[0];

-}

-

-

-/**

- * Update vertex/fragment program state.  In particular, update these fields:

- *   ctx->VertexProgram._Current

- *   ctx->VertexProgram._TnlProgram,

- * These point to the highest priority enabled vertex/fragment program or are

- * NULL if fixed-function processing is to be done.

- *

- * This function needs to be called after texture state validation in case

- * we're generating a fragment program from fixed-function texture state.

- *

- * \return bitfield which will indicate _NEW_PROGRAM state if a new vertex

- * or fragment program is being used.

- */

-static GLbitfield

-update_program(struct gl_context *ctx)

-{

-   const struct gl_shader_program *vsProg = ctx->Shader.CurrentVertexProgram;

-   const struct gl_shader_program *gsProg = ctx->Shader.CurrentGeometryProgram;

-   const struct gl_shader_program *fsProg = ctx->Shader.CurrentFragmentProgram;

-   const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current;

-   const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current;

-   const struct gl_geometry_program *prevGP = ctx->GeometryProgram._Current;

-   GLbitfield new_state = 0x0;

-

-   /*

-    * Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current

-    * pointers to the programs that should be used for rendering.  If either

-    * is NULL, use fixed-function code paths.

-    *

-    * These programs may come from several sources.  The priority is as

-    * follows:

-    *   1. OpenGL 2.0/ARB vertex/fragment shaders

-    *   2. ARB/NV vertex/fragment programs

-    *   3. Programs derived from fixed-function state.

-    *

-    * Note: it's possible for a vertex shader to get used with a fragment

-    * program (and vice versa) here, but in practice that shouldn't ever

-    * come up, or matter.

-    */

-

-   if (fsProg && fsProg->LinkStatus && fsProg->FragmentProgram) {

-      /* Use shader programs */

-      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,

-                               fsProg->FragmentProgram);

-   }

-   else if (ctx->FragmentProgram._Enabled) {

-      /* use user-defined vertex program */

-      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,

-                               ctx->FragmentProgram.Current);

-   }

-   else if (ctx->FragmentProgram._MaintainTexEnvProgram) {

-      /* Use fragment program generated from fixed-function state.

-       */

-      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,

-                               _mesa_get_fixed_func_fragment_program(ctx));

-      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,

-                               ctx->FragmentProgram._Current);

-   }

-   else {

-      /* no fragment program */

-      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);

-   }

-

-   if (gsProg && gsProg->LinkStatus && gsProg->GeometryProgram) {

-      /* Use shader programs */

-      _mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current,

-                               gsProg->GeometryProgram);

-   } else {

-      /* no fragment program */

-      _mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current, NULL);

-   }

-

-   /* Examine vertex program after fragment program as

-    * _mesa_get_fixed_func_vertex_program() needs to know active

-    * fragprog inputs.

-    */

-   if (vsProg && vsProg->LinkStatus && vsProg->VertexProgram) {

-      /* Use shader programs */

-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,

-                            vsProg->VertexProgram);

-   }

-   else if (ctx->VertexProgram._Enabled) {

-      /* use user-defined vertex program */

-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,

-                               ctx->VertexProgram.Current);

-   }

-   else if (ctx->VertexProgram._MaintainTnlProgram) {

-      /* Use vertex program generated from fixed-function state.

-       */

-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,

-                               _mesa_get_fixed_func_vertex_program(ctx));

-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,

-                               ctx->VertexProgram._Current);

-   }

-   else {

-      /* no vertex program */

-      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);

-   }

-

-   /* Let the driver know what's happening:

-    */

-   if (ctx->FragmentProgram._Current != prevFP) {

-      new_state |= _NEW_PROGRAM;

-      if (ctx->Driver.BindProgram) {

-         ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,

-                          (struct gl_program *) ctx->FragmentProgram._Current);

-      }

-   }

-

-   if (ctx->GeometryProgram._Current != prevGP) {

-      new_state |= _NEW_PROGRAM;

-      if (ctx->Driver.BindProgram) {

-         ctx->Driver.BindProgram(ctx, MESA_GEOMETRY_PROGRAM,

-                            (struct gl_program *) ctx->GeometryProgram._Current);

-      }

-   }

-

-   if (ctx->VertexProgram._Current != prevVP) {

-      new_state |= _NEW_PROGRAM;

-      if (ctx->Driver.BindProgram) {

-         ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,

-                            (struct gl_program *) ctx->VertexProgram._Current);

-      }

-   }

-

-   return new_state;

-}

-

-

-/**

- * Examine shader constants and return either _NEW_PROGRAM_CONSTANTS or 0.

- */

-static GLbitfield

-update_program_constants(struct gl_context *ctx)

-{

-   GLbitfield new_state = 0x0;

-

-   if (ctx->FragmentProgram._Current) {

-      const struct gl_program_parameter_list *params =

-         ctx->FragmentProgram._Current->Base.Parameters;

-      if (params && params->StateFlags & ctx->NewState) {

-         new_state |= _NEW_PROGRAM_CONSTANTS;

-      }

-   }

-

-   if (ctx->GeometryProgram._Current) {

-      const struct gl_program_parameter_list *params =

-         ctx->GeometryProgram._Current->Base.Parameters;

-      /*FIXME: StateFlags is always 0 because we have unnamed constant

-       *       not state changes */

-      if (params /*&& params->StateFlags & ctx->NewState*/) {

-         new_state |= _NEW_PROGRAM_CONSTANTS;

-      }

-   }

-

-   if (ctx->VertexProgram._Current) {

-      const struct gl_program_parameter_list *params =

-         ctx->VertexProgram._Current->Base.Parameters;

-      if (params && params->StateFlags & ctx->NewState) {

-         new_state |= _NEW_PROGRAM_CONSTANTS;

-      }

-   }

-

-   return new_state;

-}

-

-

-

-

-static void

-update_viewport_matrix(struct gl_context *ctx)

-{

-   const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF;

-

-   ASSERT(depthMax > 0);

-

-   /* Compute scale and bias values. This is really driver-specific

-    * and should be maintained elsewhere if at all.

-    * NOTE: RasterPos uses this.

-    */

-   _math_matrix_viewport(&ctx->Viewport._WindowMap,

-                         ctx->Viewport.X, ctx->Viewport.Y,

-                         ctx->Viewport.Width, ctx->Viewport.Height,

-                         ctx->Viewport.Near, ctx->Viewport.Far,

-                         depthMax);

-}

-

-

-/**

- * Update derived multisample state.

- */

-static void

-update_multisample(struct gl_context *ctx)

-{

-   ctx->Multisample._Enabled = GL_FALSE;

-   if (ctx->Multisample.Enabled &&

-       ctx->DrawBuffer &&

-       ctx->DrawBuffer->Visual.sampleBuffers)

-      ctx->Multisample._Enabled = GL_TRUE;

-}

-

-

-/**

- * Update derived color/blend/logicop state.

- */

-static void

-update_color(struct gl_context *ctx)

-{

-   /* This is needed to support 1.1's RGB logic ops AND

-    * 1.0's blending logicops.

-    */

-   ctx->Color._LogicOpEnabled = _mesa_rgba_logicop_enabled(ctx);

-}

-

-

-/*

- * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET

- * in ctx->_TriangleCaps if needed.

- */

-static void

-update_polygon(struct gl_context *ctx)

-{

-   ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);

-

-   if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)

-      ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;

-

-   if (   ctx->Polygon.OffsetPoint

-       || ctx->Polygon.OffsetLine

-       || ctx->Polygon.OffsetFill)

-      ctx->_TriangleCaps |= DD_TRI_OFFSET;

-}

-

-

-/**

- * Update the ctx->_TriangleCaps bitfield.

- * XXX that bitfield should really go away someday!

- * This function must be called after other update_*() functions since

- * there are dependencies on some other derived values.

- */

-#if 0

-static void

-update_tricaps(struct gl_context *ctx, GLbitfield new_state)

-{

-   ctx->_TriangleCaps = 0;

-

-   /*

-    * Points

-    */

-   if (1/*new_state & _NEW_POINT*/) {

-      if (ctx->Point.SmoothFlag)

-         ctx->_TriangleCaps |= DD_POINT_SMOOTH;

-      if (ctx->Point._Attenuated)

-         ctx->_TriangleCaps |= DD_POINT_ATTEN;

-   }

-

-   /*

-    * Lines

-    */

-   if (1/*new_state & _NEW_LINE*/) {

-      if (ctx->Line.SmoothFlag)

-         ctx->_TriangleCaps |= DD_LINE_SMOOTH;

-      if (ctx->Line.StippleFlag)

-         ctx->_TriangleCaps |= DD_LINE_STIPPLE;

-   }

-

-   /*

-    * Polygons

-    */

-   if (1/*new_state & _NEW_POLYGON*/) {

-      if (ctx->Polygon.SmoothFlag)

-         ctx->_TriangleCaps |= DD_TRI_SMOOTH;

-      if (ctx->Polygon.StippleFlag)

-         ctx->_TriangleCaps |= DD_TRI_STIPPLE;

-      if (ctx->Polygon.FrontMode != GL_FILL

-          || ctx->Polygon.BackMode != GL_FILL)

-         ctx->_TriangleCaps |= DD_TRI_UNFILLED;

-      if (ctx->Polygon.CullFlag

-          && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)

-         ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;

-      if (ctx->Polygon.OffsetPoint ||

-          ctx->Polygon.OffsetLine ||

-          ctx->Polygon.OffsetFill)

-         ctx->_TriangleCaps |= DD_TRI_OFFSET;

-   }

-

-   /*

-    * Lighting and shading

-    */

-   if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)

-      ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;

-   if (ctx->Light.ShadeModel == GL_FLAT)

-      ctx->_TriangleCaps |= DD_FLATSHADE;

-   if (_mesa_need_secondary_color(ctx))

-      ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;

-

-   /*

-    * Stencil

-    */

-   if (ctx->Stencil._TestTwoSide)

-      ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;

-}

-#endif

-

-

-/**

- * Compute derived GL state.

- * If __struct gl_contextRec::NewState is non-zero then this function \b must

- * be called before rendering anything.

- *

- * Calls dd_function_table::UpdateState to perform any internal state

- * management necessary.

- * 

- * \sa _mesa_update_modelview_project(), _mesa_update_texture(),

- * _mesa_update_buffer_bounds(),

- * _mesa_update_lighting() and _mesa_update_tnl_spaces().

- */

-void

-_mesa_update_state_locked( struct gl_context *ctx )

-{

-   GLbitfield new_state = ctx->NewState;

-   GLbitfield prog_flags = _NEW_PROGRAM;

-   GLbitfield new_prog_state = 0x0;

-

-   if (new_state == _NEW_CURRENT_ATTRIB) 

-      goto out;

-

-   if (MESA_VERBOSE & VERBOSE_STATE)

-      _mesa_print_state("_mesa_update_state", new_state);

-

-   /* Determine which state flags effect vertex/fragment program state */

-   if (ctx->FragmentProgram._MaintainTexEnvProgram) {

-      prog_flags |= (_NEW_BUFFERS | _NEW_TEXTURE | _NEW_FOG |

-		     _NEW_ARRAY | _NEW_LIGHT | _NEW_POINT | _NEW_RENDERMODE |

-		     _NEW_PROGRAM);

-   }

-   if (ctx->VertexProgram._MaintainTnlProgram) {

-      prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX |

-                     _NEW_TRANSFORM | _NEW_POINT |

-                     _NEW_FOG | _NEW_LIGHT |

-                     _MESA_NEW_NEED_EYE_COORDS);

-   }

-

-   /*

-    * Now update derived state info

-    */

-

-   if (new_state & prog_flags)

-      update_program_enables( ctx );

-

-   if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))

-      _mesa_update_modelview_project( ctx, new_state );

-

-   if (new_state & (_NEW_PROGRAM|_NEW_TEXTURE|_NEW_TEXTURE_MATRIX))

-      _mesa_update_texture( ctx, new_state );

-

-   if (new_state & _NEW_BUFFERS)

-      _mesa_update_framebuffer(ctx);

-

-   if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))

-      _mesa_update_draw_buffer_bounds( ctx );

-

-   if (new_state & _NEW_POLYGON)

-      update_polygon( ctx );

-

-   if (new_state & _NEW_LIGHT)

-      _mesa_update_lighting( ctx );

-

-   if (new_state & (_NEW_STENCIL | _NEW_BUFFERS))

-      _mesa_update_stencil( ctx );

-

-   if (new_state & _MESA_NEW_TRANSFER_STATE)

-      _mesa_update_pixel( ctx, new_state );

-

-   if (new_state & _DD_NEW_SEPARATE_SPECULAR)

-      update_separate_specular( ctx );

-

-   if (new_state & (_NEW_BUFFERS | _NEW_VIEWPORT))

-      update_viewport_matrix(ctx);

-

-   if (new_state & _NEW_MULTISAMPLE)

-      update_multisample( ctx );

-

-   if (new_state & _NEW_COLOR)

-      update_color( ctx );

-

-#if 0

-   if (new_state & (_NEW_POINT | _NEW_LINE | _NEW_POLYGON | _NEW_LIGHT

-                    | _NEW_STENCIL | _DD_NEW_SEPARATE_SPECULAR))

-      update_tricaps( ctx, new_state );

-#endif

-

-   /* ctx->_NeedEyeCoords is now up to date.

-    *

-    * If the truth value of this variable has changed, update for the

-    * new lighting space and recompute the positions of lights and the

-    * normal transform.

-    *

-    * If the lighting space hasn't changed, may still need to recompute

-    * light positions & normal transforms for other reasons.

-    */

-   if (new_state & _MESA_NEW_NEED_EYE_COORDS) 

-      _mesa_update_tnl_spaces( ctx, new_state );

-

-   if (new_state & prog_flags) {

-      /* When we generate programs from fixed-function vertex/fragment state

-       * this call may generate/bind a new program.  If so, we need to

-       * propogate the _NEW_PROGRAM flag to the driver.

-       */

-      new_prog_state |= update_program( ctx );

-   }

-

-   if (new_state & (_NEW_ARRAY | _NEW_PROGRAM | _NEW_BUFFER_OBJECT))

-      update_arrays( ctx );

-

- out:

-   new_prog_state |= update_program_constants(ctx);

-

-   /*

-    * Give the driver a chance to act upon the new_state flags.

-    * The driver might plug in different span functions, for example.

-    * Also, this is where the driver can invalidate the state of any

-    * active modules (such as swrast_setup, swrast, tnl, etc).

-    *

-    * Set ctx->NewState to zero to avoid recursion if

-    * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)

-    */

-   new_state = ctx->NewState | new_prog_state;

-   ctx->NewState = 0;

-   ctx->Driver.UpdateState(ctx, new_state);

-   ctx->Array.NewState = 0;

-   if (!ctx->Array.RebindArrays)

-      ctx->Array.RebindArrays = (new_state & (_NEW_ARRAY | _NEW_PROGRAM)) != 0;

-}

-

-

-/* This is the usual entrypoint for state updates:

- */

-void

-_mesa_update_state( struct gl_context *ctx )

-{

-   _mesa_lock_context_textures(ctx);

-   _mesa_update_state_locked(ctx);

-   _mesa_unlock_context_textures(ctx);

-}

-

-

-

-

-/**

- * Want to figure out which fragment program inputs are actually

- * constant/current values from ctx->Current.  These should be

- * referenced as a tracked state variable rather than a fragment

- * program input, to save the overhead of putting a constant value in

- * every submitted vertex, transferring it to hardware, interpolating

- * it across the triangle, etc...

- *

- * When there is a VP bound, just use vp->outputs.  But when we're

- * generating vp from fixed function state, basically want to

- * calculate:

- *

- * vp_out_2_fp_in( vp_in_2_vp_out( varying_inputs ) | 

- *                 potential_vp_outputs )

- *

- * Where potential_vp_outputs is calculated by looking at enabled

- * texgen, etc.

- * 

- * The generated fragment program should then only declare inputs that

- * may vary or otherwise differ from the ctx->Current values.

- * Otherwise, the fp should track them as state values instead.

- */

-void

-_mesa_set_varying_vp_inputs( struct gl_context *ctx,

-                             GLbitfield varying_inputs )

-{

-   if (ctx->varying_vp_inputs != varying_inputs) {

-      ctx->varying_vp_inputs = varying_inputs;

-      ctx->NewState |= _NEW_ARRAY;

-      /*printf("%s %x\n", __FUNCTION__, varying_inputs);*/

-   }

-}

-

-

-/**

- * Used by drivers to tell core Mesa that the driver is going to

- * install/ use its own vertex program.  In particular, this will

- * prevent generated fragment programs from using state vars instead

- * of ordinary varyings/inputs.

- */

-void

-_mesa_set_vp_override(struct gl_context *ctx, GLboolean flag)

-{

-   if (ctx->VertexProgram._Overriden != flag) {

-      ctx->VertexProgram._Overriden = flag;

-

-      /* Set one of the bits which will trigger fragment program

-       * regeneration:

-       */

-      ctx->NewState |= _NEW_PROGRAM;

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.3
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file state.c
+ * State management.
+ * 
+ * This file manages recalculation of derived values in struct gl_context.
+ */
+
+
+#include "glheader.h"
+#include "mtypes.h"
+#include "context.h"
+#include "debug.h"
+#include "macros.h"
+#include "ffvertex_prog.h"
+#include "framebuffer.h"
+#include "light.h"
+#include "matrix.h"
+#include "pixel.h"
+#include "program/program.h"
+#include "program/prog_parameter.h"
+#include "state.h"
+#include "stencil.h"
+#include "texenvprogram.h"
+#include "texobj.h"
+#include "texstate.h"
+
+
+static void
+update_separate_specular(struct gl_context *ctx)
+{
+   if (_mesa_need_secondary_color(ctx))
+      ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
+   else
+      ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
+}
+
+
+/**
+ * Compute the index of the last array element that can be safely accessed
+ * in a vertex array.  We can really only do this when the array lives in
+ * a VBO.
+ * The array->_MaxElement field will be updated.
+ * Later in glDrawArrays/Elements/etc we can do some bounds checking.
+ */
+static void
+compute_max_element(struct gl_client_array *array)
+{
+   assert(array->Enabled);
+   if (array->BufferObj->Name) {
+      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
+      GLsizeiptrARB obj_size = (GLsizeiptrARB) array->BufferObj->Size;
+
+      if (offset < obj_size) {
+	 array->_MaxElement = (obj_size - offset +
+			       array->StrideB -
+			       array->_ElementSize) / array->StrideB;
+      } else {
+	 array->_MaxElement = 0;
+      }
+   }
+   else {
+      /* user-space array, no idea how big it is */
+      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
+   }
+}
+
+
+/**
+ * Helper for update_arrays().
+ * \return  min(current min, array->_MaxElement).
+ */
+static GLuint
+update_min(GLuint min, struct gl_client_array *array)
+{
+   compute_max_element(array);
+   return MIN2(min, array->_MaxElement);
+}
+
+
+/**
+ * Update ctx->Array._MaxElement (the max legal index into all enabled arrays).
+ * Need to do this upon new array state or new buffer object state.
+ */
+static void
+update_arrays( struct gl_context *ctx )
+{
+   struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
+   GLuint i, min = ~0;
+
+   /* find min of _MaxElement values for all enabled arrays */
+
+   /* 0 */
+   if (ctx->VertexProgram._Current
+       && arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]);
+   }
+   else if (arrayObj->Vertex.Enabled) {
+      min = update_min(min, &arrayObj->Vertex);
+   }
+
+   /* 1 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT]);
+   }
+   /* no conventional vertex weight array */
+
+   /* 2 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]);
+   }
+   else if (arrayObj->Normal.Enabled) {
+      min = update_min(min, &arrayObj->Normal);
+   }
+
+   /* 3 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]);
+   }
+   else if (arrayObj->Color.Enabled) {
+      min = update_min(min, &arrayObj->Color);
+   }
+
+   /* 4 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1]);
+   }
+   else if (arrayObj->SecondaryColor.Enabled) {
+      min = update_min(min, &arrayObj->SecondaryColor);
+   }
+
+   /* 5 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_FOG]);
+   }
+   else if (arrayObj->FogCoord.Enabled) {
+      min = update_min(min, &arrayObj->FogCoord);
+   }
+
+   /* 6 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX]);
+   }
+   else if (arrayObj->Index.Enabled) {
+      min = update_min(min, &arrayObj->Index);
+   }
+
+   /* 7 */
+   if (ctx->VertexProgram._Enabled
+       && arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled) {
+      min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG]);
+   }
+
+   /* 8..15 */
+   for (i = VERT_ATTRIB_TEX0; i <= VERT_ATTRIB_TEX7; i++) {
+      if (ctx->VertexProgram._Enabled
+          && arrayObj->VertexAttrib[i].Enabled) {
+         min = update_min(min, &arrayObj->VertexAttrib[i]);
+      }
+      else if (i - VERT_ATTRIB_TEX0 < ctx->Const.MaxTextureCoordUnits
+               && arrayObj->TexCoord[i - VERT_ATTRIB_TEX0].Enabled) {
+         min = update_min(min, &arrayObj->TexCoord[i - VERT_ATTRIB_TEX0]);
+      }
+   }
+
+   /* 16..31 */
+   if (ctx->VertexProgram._Current) {
+      for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) {
+         if (arrayObj->VertexAttrib[i].Enabled) {
+            min = update_min(min, &arrayObj->VertexAttrib[i]);
+         }
+      }
+   }
+
+   if (arrayObj->EdgeFlag.Enabled) {
+      min = update_min(min, &arrayObj->EdgeFlag);
+   }
+
+   /* _MaxElement is one past the last legal array element */
+   arrayObj->_MaxElement = min;
+}
+
+
+/**
+ * Update the following fields:
+ *   ctx->VertexProgram._Enabled
+ *   ctx->FragmentProgram._Enabled
+ *   ctx->ATIFragmentShader._Enabled
+ * This needs to be done before texture state validation.
+ */
+static void
+update_program_enables(struct gl_context *ctx)
+{
+   /* These _Enabled flags indicate if the program is enabled AND valid. */
+   ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled
+      && ctx->VertexProgram.Current->Base.Instructions;
+   ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled
+      && ctx->FragmentProgram.Current->Base.Instructions;
+   ctx->ATIFragmentShader._Enabled = ctx->ATIFragmentShader.Enabled
+      && ctx->ATIFragmentShader.Current->Instructions[0];
+}
+
+
+/**
+ * Update vertex/fragment program state.  In particular, update these fields:
+ *   ctx->VertexProgram._Current
+ *   ctx->VertexProgram._TnlProgram,
+ * These point to the highest priority enabled vertex/fragment program or are
+ * NULL if fixed-function processing is to be done.
+ *
+ * This function needs to be called after texture state validation in case
+ * we're generating a fragment program from fixed-function texture state.
+ *
+ * \return bitfield which will indicate _NEW_PROGRAM state if a new vertex
+ * or fragment program is being used.
+ */
+static GLbitfield
+update_program(struct gl_context *ctx)
+{
+   const struct gl_shader_program *vsProg = ctx->Shader.CurrentVertexProgram;
+   const struct gl_shader_program *gsProg = ctx->Shader.CurrentGeometryProgram;
+   const struct gl_shader_program *fsProg = ctx->Shader.CurrentFragmentProgram;
+   const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current;
+   const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current;
+   const struct gl_geometry_program *prevGP = ctx->GeometryProgram._Current;
+   GLbitfield new_state = 0x0;
+
+   /*
+    * Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
+    * pointers to the programs that should be used for rendering.  If either
+    * is NULL, use fixed-function code paths.
+    *
+    * These programs may come from several sources.  The priority is as
+    * follows:
+    *   1. OpenGL 2.0/ARB vertex/fragment shaders
+    *   2. ARB/NV vertex/fragment programs
+    *   3. Programs derived from fixed-function state.
+    *
+    * Note: it's possible for a vertex shader to get used with a fragment
+    * program (and vice versa) here, but in practice that shouldn't ever
+    * come up, or matter.
+    */
+
+   if (fsProg && fsProg->LinkStatus && fsProg->FragmentProgram) {
+      /* Use shader programs */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
+                               fsProg->FragmentProgram);
+   }
+   else if (ctx->FragmentProgram._Enabled) {
+      /* use user-defined vertex program */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
+                               ctx->FragmentProgram.Current);
+   }
+   else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
+      /* Use fragment program generated from fixed-function state.
+       */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
+                               _mesa_get_fixed_func_fragment_program(ctx));
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
+                               ctx->FragmentProgram._Current);
+   }
+   else {
+      /* no fragment program */
+      _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
+   }
+
+   if (gsProg && gsProg->LinkStatus && gsProg->GeometryProgram) {
+      /* Use shader programs */
+      _mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current,
+                               gsProg->GeometryProgram);
+   } else {
+      /* no fragment program */
+      _mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current, NULL);
+   }
+
+   /* Examine vertex program after fragment program as
+    * _mesa_get_fixed_func_vertex_program() needs to know active
+    * fragprog inputs.
+    */
+   if (vsProg && vsProg->LinkStatus && vsProg->VertexProgram) {
+      /* Use shader programs */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                            vsProg->VertexProgram);
+   }
+   else if (ctx->VertexProgram._Enabled) {
+      /* use user-defined vertex program */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                               ctx->VertexProgram.Current);
+   }
+   else if (ctx->VertexProgram._MaintainTnlProgram) {
+      /* Use vertex program generated from fixed-function state.
+       */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
+                               _mesa_get_fixed_func_vertex_program(ctx));
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
+                               ctx->VertexProgram._Current);
+   }
+   else {
+      /* no vertex program */
+      _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
+   }
+
+   /* Let the driver know what's happening:
+    */
+   if (ctx->FragmentProgram._Current != prevFP) {
+      new_state |= _NEW_PROGRAM;
+      if (ctx->Driver.BindProgram) {
+         ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
+                          (struct gl_program *) ctx->FragmentProgram._Current);
+      }
+   }
+
+   if (ctx->GeometryProgram._Current != prevGP) {
+      new_state |= _NEW_PROGRAM;
+      if (ctx->Driver.BindProgram) {
+         ctx->Driver.BindProgram(ctx, MESA_GEOMETRY_PROGRAM,
+                            (struct gl_program *) ctx->GeometryProgram._Current);
+      }
+   }
+
+   if (ctx->VertexProgram._Current != prevVP) {
+      new_state |= _NEW_PROGRAM;
+      if (ctx->Driver.BindProgram) {
+         ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
+                            (struct gl_program *) ctx->VertexProgram._Current);
+      }
+   }
+
+   return new_state;
+}
+
+
+/**
+ * Examine shader constants and return either _NEW_PROGRAM_CONSTANTS or 0.
+ */
+static GLbitfield
+update_program_constants(struct gl_context *ctx)
+{
+   GLbitfield new_state = 0x0;
+
+   if (ctx->FragmentProgram._Current) {
+      const struct gl_program_parameter_list *params =
+         ctx->FragmentProgram._Current->Base.Parameters;
+      if (params && params->StateFlags & ctx->NewState) {
+         new_state |= _NEW_PROGRAM_CONSTANTS;
+      }
+   }
+
+   if (ctx->GeometryProgram._Current) {
+      const struct gl_program_parameter_list *params =
+         ctx->GeometryProgram._Current->Base.Parameters;
+      /*FIXME: StateFlags is always 0 because we have unnamed constant
+       *       not state changes */
+      if (params /*&& params->StateFlags & ctx->NewState*/) {
+         new_state |= _NEW_PROGRAM_CONSTANTS;
+      }
+   }
+
+   if (ctx->VertexProgram._Current) {
+      const struct gl_program_parameter_list *params =
+         ctx->VertexProgram._Current->Base.Parameters;
+      if (params && params->StateFlags & ctx->NewState) {
+         new_state |= _NEW_PROGRAM_CONSTANTS;
+      }
+   }
+
+   return new_state;
+}
+
+
+
+
+static void
+update_viewport_matrix(struct gl_context *ctx)
+{
+   const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF;
+
+   ASSERT(depthMax > 0);
+
+   /* Compute scale and bias values. This is really driver-specific
+    * and should be maintained elsewhere if at all.
+    * NOTE: RasterPos uses this.
+    */
+   _math_matrix_viewport(&ctx->Viewport._WindowMap,
+                         ctx->Viewport.X, ctx->Viewport.Y,
+                         ctx->Viewport.Width, ctx->Viewport.Height,
+                         ctx->Viewport.Near, ctx->Viewport.Far,
+                         depthMax);
+}
+
+
+/**
+ * Update derived multisample state.
+ */
+static void
+update_multisample(struct gl_context *ctx)
+{
+   ctx->Multisample._Enabled = GL_FALSE;
+   if (ctx->Multisample.Enabled &&
+       ctx->DrawBuffer &&
+       ctx->DrawBuffer->Visual.sampleBuffers)
+      ctx->Multisample._Enabled = GL_TRUE;
+}
+
+
+/**
+ * Update derived color/blend/logicop state.
+ */
+static void
+update_color(struct gl_context *ctx)
+{
+   /* This is needed to support 1.1's RGB logic ops AND
+    * 1.0's blending logicops.
+    */
+   ctx->Color._LogicOpEnabled = _mesa_rgba_logicop_enabled(ctx);
+}
+
+
+/*
+ * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
+ * in ctx->_TriangleCaps if needed.
+ */
+static void
+update_polygon(struct gl_context *ctx)
+{
+   ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
+
+   if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
+      ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
+
+   if (   ctx->Polygon.OffsetPoint
+       || ctx->Polygon.OffsetLine
+       || ctx->Polygon.OffsetFill)
+      ctx->_TriangleCaps |= DD_TRI_OFFSET;
+}
+
+
+/**
+ * Update the ctx->_TriangleCaps bitfield.
+ * XXX that bitfield should really go away someday!
+ * This function must be called after other update_*() functions since
+ * there are dependencies on some other derived values.
+ */
+#if 0
+static void
+update_tricaps(struct gl_context *ctx, GLbitfield new_state)
+{
+   ctx->_TriangleCaps = 0;
+
+   /*
+    * Points
+    */
+   if (1/*new_state & _NEW_POINT*/) {
+      if (ctx->Point.SmoothFlag)
+         ctx->_TriangleCaps |= DD_POINT_SMOOTH;
+      if (ctx->Point._Attenuated)
+         ctx->_TriangleCaps |= DD_POINT_ATTEN;
+   }
+
+   /*
+    * Lines
+    */
+   if (1/*new_state & _NEW_LINE*/) {
+      if (ctx->Line.SmoothFlag)
+         ctx->_TriangleCaps |= DD_LINE_SMOOTH;
+      if (ctx->Line.StippleFlag)
+         ctx->_TriangleCaps |= DD_LINE_STIPPLE;
+   }
+
+   /*
+    * Polygons
+    */
+   if (1/*new_state & _NEW_POLYGON*/) {
+      if (ctx->Polygon.SmoothFlag)
+         ctx->_TriangleCaps |= DD_TRI_SMOOTH;
+      if (ctx->Polygon.StippleFlag)
+         ctx->_TriangleCaps |= DD_TRI_STIPPLE;
+      if (ctx->Polygon.FrontMode != GL_FILL
+          || ctx->Polygon.BackMode != GL_FILL)
+         ctx->_TriangleCaps |= DD_TRI_UNFILLED;
+      if (ctx->Polygon.CullFlag
+          && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
+         ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
+      if (ctx->Polygon.OffsetPoint ||
+          ctx->Polygon.OffsetLine ||
+          ctx->Polygon.OffsetFill)
+         ctx->_TriangleCaps |= DD_TRI_OFFSET;
+   }
+
+   /*
+    * Lighting and shading
+    */
+   if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
+      ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
+   if (ctx->Light.ShadeModel == GL_FLAT)
+      ctx->_TriangleCaps |= DD_FLATSHADE;
+   if (_mesa_need_secondary_color(ctx))
+      ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
+
+   /*
+    * Stencil
+    */
+   if (ctx->Stencil._TestTwoSide)
+      ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;
+}
+#endif
+
+
+/**
+ * Compute derived GL state.
+ * If __struct gl_contextRec::NewState is non-zero then this function \b must
+ * be called before rendering anything.
+ *
+ * Calls dd_function_table::UpdateState to perform any internal state
+ * management necessary.
+ * 
+ * \sa _mesa_update_modelview_project(), _mesa_update_texture(),
+ * _mesa_update_buffer_bounds(),
+ * _mesa_update_lighting() and _mesa_update_tnl_spaces().
+ */
+void
+_mesa_update_state_locked( struct gl_context *ctx )
+{
+   GLbitfield new_state = ctx->NewState;
+   GLbitfield prog_flags = _NEW_PROGRAM;
+   GLbitfield new_prog_state = 0x0;
+
+   if (new_state == _NEW_CURRENT_ATTRIB) 
+      goto out;
+
+   if (MESA_VERBOSE & VERBOSE_STATE)
+      _mesa_print_state("_mesa_update_state", new_state);
+
+   /* Determine which state flags effect vertex/fragment program state */
+   if (ctx->FragmentProgram._MaintainTexEnvProgram) {
+      prog_flags |= (_NEW_BUFFERS | _NEW_TEXTURE | _NEW_FOG |
+		     _NEW_ARRAY | _NEW_LIGHT | _NEW_POINT | _NEW_RENDERMODE |
+		     _NEW_PROGRAM);
+   }
+   if (ctx->VertexProgram._MaintainTnlProgram) {
+      prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX |
+                     _NEW_TRANSFORM | _NEW_POINT |
+                     _NEW_FOG | _NEW_LIGHT |
+                     _MESA_NEW_NEED_EYE_COORDS);
+   }
+
+   /*
+    * Now update derived state info
+    */
+
+   if (new_state & prog_flags)
+      update_program_enables( ctx );
+
+   if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
+      _mesa_update_modelview_project( ctx, new_state );
+
+   if (new_state & (_NEW_PROGRAM|_NEW_TEXTURE|_NEW_TEXTURE_MATRIX))
+      _mesa_update_texture( ctx, new_state );
+
+   if (new_state & _NEW_BUFFERS)
+      _mesa_update_framebuffer(ctx);
+
+   if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
+      _mesa_update_draw_buffer_bounds( ctx );
+
+   if (new_state & _NEW_POLYGON)
+      update_polygon( ctx );
+
+   if (new_state & _NEW_LIGHT)
+      _mesa_update_lighting( ctx );
+
+   if (new_state & (_NEW_STENCIL | _NEW_BUFFERS))
+      _mesa_update_stencil( ctx );
+
+   if (new_state & _NEW_PIXEL)
+      _mesa_update_pixel( ctx, new_state );
+
+   if (new_state & _DD_NEW_SEPARATE_SPECULAR)
+      update_separate_specular( ctx );
+
+   if (new_state & (_NEW_BUFFERS | _NEW_VIEWPORT))
+      update_viewport_matrix(ctx);
+
+   if (new_state & _NEW_MULTISAMPLE)
+      update_multisample( ctx );
+
+   if (new_state & _NEW_COLOR)
+      update_color( ctx );
+
+#if 0
+   if (new_state & (_NEW_POINT | _NEW_LINE | _NEW_POLYGON | _NEW_LIGHT
+                    | _NEW_STENCIL | _DD_NEW_SEPARATE_SPECULAR))
+      update_tricaps( ctx, new_state );
+#endif
+
+   /* ctx->_NeedEyeCoords is now up to date.
+    *
+    * If the truth value of this variable has changed, update for the
+    * new lighting space and recompute the positions of lights and the
+    * normal transform.
+    *
+    * If the lighting space hasn't changed, may still need to recompute
+    * light positions & normal transforms for other reasons.
+    */
+   if (new_state & _MESA_NEW_NEED_EYE_COORDS) 
+      _mesa_update_tnl_spaces( ctx, new_state );
+
+   if (new_state & prog_flags) {
+      /* When we generate programs from fixed-function vertex/fragment state
+       * this call may generate/bind a new program.  If so, we need to
+       * propogate the _NEW_PROGRAM flag to the driver.
+       */
+      new_prog_state |= update_program( ctx );
+   }
+
+   if (new_state & (_NEW_ARRAY | _NEW_PROGRAM | _NEW_BUFFER_OBJECT))
+      update_arrays( ctx );
+
+ out:
+   new_prog_state |= update_program_constants(ctx);
+
+   /*
+    * Give the driver a chance to act upon the new_state flags.
+    * The driver might plug in different span functions, for example.
+    * Also, this is where the driver can invalidate the state of any
+    * active modules (such as swrast_setup, swrast, tnl, etc).
+    *
+    * Set ctx->NewState to zero to avoid recursion if
+    * Driver.UpdateState() has to call FLUSH_VERTICES().  (fixed?)
+    */
+   new_state = ctx->NewState | new_prog_state;
+   ctx->NewState = 0;
+   ctx->Driver.UpdateState(ctx, new_state);
+   ctx->Array.NewState = 0;
+   if (!ctx->Array.RebindArrays)
+      ctx->Array.RebindArrays = (new_state & (_NEW_ARRAY | _NEW_PROGRAM)) != 0;
+}
+
+
+/* This is the usual entrypoint for state updates:
+ */
+void
+_mesa_update_state( struct gl_context *ctx )
+{
+   _mesa_lock_context_textures(ctx);
+   _mesa_update_state_locked(ctx);
+   _mesa_unlock_context_textures(ctx);
+}
+
+
+
+
+/**
+ * Want to figure out which fragment program inputs are actually
+ * constant/current values from ctx->Current.  These should be
+ * referenced as a tracked state variable rather than a fragment
+ * program input, to save the overhead of putting a constant value in
+ * every submitted vertex, transferring it to hardware, interpolating
+ * it across the triangle, etc...
+ *
+ * When there is a VP bound, just use vp->outputs.  But when we're
+ * generating vp from fixed function state, basically want to
+ * calculate:
+ *
+ * vp_out_2_fp_in( vp_in_2_vp_out( varying_inputs ) | 
+ *                 potential_vp_outputs )
+ *
+ * Where potential_vp_outputs is calculated by looking at enabled
+ * texgen, etc.
+ * 
+ * The generated fragment program should then only declare inputs that
+ * may vary or otherwise differ from the ctx->Current values.
+ * Otherwise, the fp should track them as state values instead.
+ */
+void
+_mesa_set_varying_vp_inputs( struct gl_context *ctx,
+                             GLbitfield varying_inputs )
+{
+   if (ctx->varying_vp_inputs != varying_inputs) {
+      ctx->varying_vp_inputs = varying_inputs;
+      ctx->NewState |= _NEW_ARRAY;
+      /*printf("%s %x\n", __FUNCTION__, varying_inputs);*/
+   }
+}
+
+
+/**
+ * Used by drivers to tell core Mesa that the driver is going to
+ * install/ use its own vertex program.  In particular, this will
+ * prevent generated fragment programs from using state vars instead
+ * of ordinary varyings/inputs.
+ */
+void
+_mesa_set_vp_override(struct gl_context *ctx, GLboolean flag)
+{
+   if (ctx->VertexProgram._Overriden != flag) {
+      ctx->VertexProgram._Overriden = flag;
+
+      /* Set one of the bits which will trigger fragment program
+       * regeneration:
+       */
+      ctx->NewState |= _NEW_PROGRAM;
+   }
+}