Merge remote-tracking branch 'origin/released'

Conflicts:
	xorg-server/dix/dispatch.c

1 files changed, 546 insertions, 547 deletions

diff --git a/mesalib/src/mesa/tnl/t_context.h b/mesalib/src/mesa/tnl/t_context.h
index 9fd5c99bb..36b104354 100644
--- a/mesalib/src/mesa/tnl/t_context.h
+++ b/mesalib/src/mesa/tnl/t_context.h
@@ -1,547 +1,546 @@
-/*

- * mesa 3-D graphics library

- * Version:  6.5

- *

- * Copyright (C) 1999-2006  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 t_context.h

- * \brief TnL module datatypes and definitions.

- * \author Keith Whitwell

- */

-

-

-/**

- * \mainpage The TNL-module

- *

- * TNL stands for "transform and lighting", i.e. this module implements

- * a pipeline that receives as input a buffer of vertices and does all

- * necessary transformations (rotations, clipping, vertex shader etc.)

- * and passes then the output to the rasterizer.

- *

- * The tnl_pipeline contains the array of all stages, which should be

- * applied. Each stage is a black-box, which is described by an

- * tnl_pipeline_stage. The function ::_tnl_run_pipeline applies all the

- * stages to the vertex_buffer TNLcontext::vb, where the vertex data

- * is stored. The last stage in the pipeline is the rasterizer.

- *

- */

-

-

-#ifndef _T_CONTEXT_H

-#define _T_CONTEXT_H

-

-#include "main/glheader.h"

-#include "main/bitset.h"

-#include "main/mtypes.h"

-

-#include "math/m_vector.h"

-

-#include "vbo/vbo.h"

-

-#define MAX_PIPELINE_STAGES     30

-

-/*

- * Note: The first attributes match the VERT_ATTRIB_* definitions

- * in mtypes.h.  However, the tnl module has additional attributes

- * for materials, color indexes, edge flags, etc.

- */

-/* Although it's nice to use these as bit indexes in a DWORD flag, we

- * could manage without if necessary.  Another limit currently is the

- * number of bits allocated for these numbers in places like vertex

- * program instruction formats and register layouts.

- */

-/* The bit space exhaustion is a fact now, done by _TNL_ATTRIB_ATTRIBUTE* for

- * GLSL vertex shader which cannot be aliased with conventional vertex attribs.

- * Compacting _TNL_ATTRIB_MAT_* attribs would not work, they would not give

- * as many free bits (11 plus already 1 free bit) as _TNL_ATTRIB_ATTRIBUTE*

- * attribs want (16).

- */

-enum {

-	_TNL_ATTRIB_POS = 0,

-	_TNL_ATTRIB_WEIGHT = 1,

-	_TNL_ATTRIB_NORMAL = 2,

-	_TNL_ATTRIB_COLOR0 = 3,

-	_TNL_ATTRIB_COLOR1 = 4,

-	_TNL_ATTRIB_FOG = 5,

-	_TNL_ATTRIB_COLOR_INDEX = 6,

-	_TNL_ATTRIB_EDGEFLAG = 7,

-	_TNL_ATTRIB_TEX0 = 8,

-	_TNL_ATTRIB_TEX1 = 9,

-	_TNL_ATTRIB_TEX2 = 10,

-	_TNL_ATTRIB_TEX3 = 11,

-	_TNL_ATTRIB_TEX4 = 12,

-	_TNL_ATTRIB_TEX5 = 13,

-	_TNL_ATTRIB_TEX6 = 14,

-	_TNL_ATTRIB_TEX7 = 15,

-

-	_TNL_ATTRIB_GENERIC0 = 16, /* doesn't really exist! */

-	_TNL_ATTRIB_GENERIC1 = 17,

-	_TNL_ATTRIB_GENERIC2 = 18,

-	_TNL_ATTRIB_GENERIC3 = 19,

-	_TNL_ATTRIB_GENERIC4 = 20,

-	_TNL_ATTRIB_GENERIC5 = 21,

-	_TNL_ATTRIB_GENERIC6 = 22,

-	_TNL_ATTRIB_GENERIC7 = 23,

-	_TNL_ATTRIB_GENERIC8 = 24,

-	_TNL_ATTRIB_GENERIC9 = 25,

-	_TNL_ATTRIB_GENERIC10 = 26,

-	_TNL_ATTRIB_GENERIC11 = 27,

-	_TNL_ATTRIB_GENERIC12 = 28,

-	_TNL_ATTRIB_GENERIC13 = 29,

-	_TNL_ATTRIB_GENERIC14 = 30,

-	_TNL_ATTRIB_GENERIC15 = 31,

-

-	/* These alias with the generics, but they are not active

-	 * concurrently, so it's not a problem.  The TNL module

-	 * doesn't have to do anything about this as this is how they

-	 * are passed into the _draw_prims callback.

-	 *

-	 * When we generate fixed-function replacement programs (in

-	 * t_vp_build.c currently), they refer to the appropriate

-	 * generic attribute in order to pick up per-vertex material

-	 * data.

-	 */

-	_TNL_ATTRIB_MAT_FRONT_AMBIENT = 16,

-	_TNL_ATTRIB_MAT_BACK_AMBIENT = 17,

-	_TNL_ATTRIB_MAT_FRONT_DIFFUSE = 18,

-	_TNL_ATTRIB_MAT_BACK_DIFFUSE = 19,

-	_TNL_ATTRIB_MAT_FRONT_SPECULAR = 20,

-	_TNL_ATTRIB_MAT_BACK_SPECULAR = 21,

-	_TNL_ATTRIB_MAT_FRONT_EMISSION = 22,

-	_TNL_ATTRIB_MAT_BACK_EMISSION = 23,

-	_TNL_ATTRIB_MAT_FRONT_SHININESS = 24,

-	_TNL_ATTRIB_MAT_BACK_SHININESS = 25,

-	_TNL_ATTRIB_MAT_FRONT_INDEXES = 26,

-	_TNL_ATTRIB_MAT_BACK_INDEXES = 27,

-

-	/* This is really a VERT_RESULT, not an attrib.  Need to fix

-	 * tnl to understand the difference.

-	 */

-	_TNL_ATTRIB_POINTSIZE = 16,

-

-	_TNL_ATTRIB_MAX = 32

-} ;

-

-#define _TNL_ATTRIB_TEX(u)       (_TNL_ATTRIB_TEX0 + (u))

-#define _TNL_ATTRIB_GENERIC(n) (_TNL_ATTRIB_GENERIC0 + (n))

-

-/* special index used for handing invalid glVertexAttribute() indices */

-#define _TNL_ATTRIB_ERROR    (_TNL_ATTRIB_GENERIC15 + 1)

-

-/**

- * Handy attribute ranges:

- */

-#define _TNL_FIRST_PROG      _TNL_ATTRIB_WEIGHT

-#define _TNL_LAST_PROG       _TNL_ATTRIB_TEX7

-

-#define _TNL_FIRST_TEX       _TNL_ATTRIB_TEX0

-#define _TNL_LAST_TEX        _TNL_ATTRIB_TEX7

-

-#define _TNL_FIRST_GENERIC _TNL_ATTRIB_GENERIC0

-#define _TNL_LAST_GENERIC  _TNL_ATTRIB_GENERIC15

-

-#define _TNL_FIRST_MAT       _TNL_ATTRIB_MAT_FRONT_AMBIENT /* GENERIC0 */

-#define _TNL_LAST_MAT        _TNL_ATTRIB_MAT_BACK_INDEXES  /* GENERIC11 */

-

-/* Number of available generic attributes */

-#define _TNL_NUM_GENERIC 16

-

-/* Number of attributes used for evaluators */

-#define _TNL_NUM_EVAL 16

-

-

-#define PRIM_BEGIN     0x10

-#define PRIM_END       0x20

-#define PRIM_MODE_MASK 0x0f

-

-static INLINE GLuint _tnl_translate_prim( const struct _mesa_prim *prim )

-{

-   GLuint flag;

-   flag = prim->mode;

-   if (prim->begin) flag |= PRIM_BEGIN;

-   if (prim->end) flag |= PRIM_END;

-   return flag;

-}

-

-

-

-

-/**

- * Contains the current state of a running pipeline.

- */

-struct vertex_buffer

-{

-   GLuint Size;  /**< Max vertices per vertex buffer, constant */

-

-   /* Constant over the pipeline.

-    */

-   GLuint Count;  /**< Number of vertices currently in buffer */

-

-   /* Pointers to current data.  Most of the data is in AttribPtr -- all of

-    * it that is one of VERT_ATTRIB_X.  For things only produced by TNL,

-    * such as backface color or eye-space coordinates, they are stored

-    * here.

-    */

-   GLuint      *Elts;		                

-   GLvector4f  *EyePtr;		                /* _TNL_BIT_POS */

-   GLvector4f  *ClipPtr;	                /* _TNL_BIT_POS */

-   GLvector4f  *NdcPtr;                         /* _TNL_BIT_POS */

-   GLubyte     ClipOrMask;	                /* _TNL_BIT_POS */

-   GLubyte     ClipAndMask;	                /* _TNL_BIT_POS */

-   GLubyte     *ClipMask;		        /* _TNL_BIT_POS */

-   GLfloat     *NormalLengthPtr;	        /* _TNL_BIT_NORMAL */

-   GLboolean   *EdgeFlag;	                /* _TNL_BIT_EDGEFLAG */

-   GLvector4f  *BackfaceIndexPtr;

-   GLvector4f  *BackfaceColorPtr;

-   GLvector4f  *BackfaceSecondaryColorPtr;

-

-   const struct _mesa_prim  *Primitive;	              

-   GLuint      PrimitiveCount;	      

-

-   /* Inputs to the vertex program stage */

-   GLvector4f *AttribPtr[_TNL_ATTRIB_MAX];      /* GL_NV_vertex_program */

-};

-

-

-/**

- * Describes an individual operation on the pipeline.

- */

-struct tnl_pipeline_stage

-{

-   const char *name;

-

-   /* Private data for the pipeline stage:

-    */

-   void *privatePtr;

-

-   /* Allocate private data

-    */

-   GLboolean (*create)( struct gl_context *ctx, struct tnl_pipeline_stage * );

-

-   /* Free private data.

-    */

-   void (*destroy)( struct tnl_pipeline_stage * );

-

-   /* Called on any statechange or input array size change or

-    * input array change to/from zero stride.

-    */

-   void (*validate)( struct gl_context *ctx, struct tnl_pipeline_stage * );

-

-   /* Called from _tnl_run_pipeline().  The stage.changed_inputs value

-    * encodes all inputs to thee struct which have changed.  If

-    * non-zero, recompute all affected outputs of the stage, otherwise

-    * execute any 'sideeffects' of the stage.

-    *

-    * Return value: GL_TRUE - keep going

-    *               GL_FALSE - finished pipeline

-    */

-   GLboolean (*run)( struct gl_context *ctx, struct tnl_pipeline_stage * );

-};

-

-

-

-/** Contains the array of all pipeline stages.

- * The default values are defined at the end of t_pipeline.c 

- */

-struct tnl_pipeline {

-   

-   GLuint last_attrib_stride[_TNL_ATTRIB_MAX];

-   GLuint last_attrib_size[_TNL_ATTRIB_MAX];

-   GLuint input_changes;

-   GLuint new_state;

-

-   struct tnl_pipeline_stage stages[MAX_PIPELINE_STAGES+1];

-   GLuint nr_stages;

-};

-

-struct tnl_clipspace;

-struct tnl_clipspace_attr;

-

-typedef void (*tnl_extract_func)( const struct tnl_clipspace_attr *a, 

-				  GLfloat *out, 

-				  const GLubyte *v );

-

-typedef void (*tnl_insert_func)( const struct tnl_clipspace_attr *a, 

-				 GLubyte *v, 

-				 const GLfloat *in );

-

-typedef void (*tnl_emit_func)( struct gl_context *ctx, 

-			       GLuint count, 

-			       GLubyte *dest );

-

-

-/**

- * Describes how to convert/move a vertex attribute from a vertex array

- * to a vertex structure.

- */

-struct tnl_clipspace_attr

-{

-   GLuint attrib;          /* which vertex attrib (0=position, etc) */

-   GLuint format;

-   GLuint vertoffset;      /* position of the attrib in the vertex struct */

-   GLuint vertattrsize;    /* size of the attribute in bytes */

-   GLubyte *inputptr;

-   GLuint inputstride;

-   GLuint inputsize;

-   const tnl_insert_func *insert;

-   tnl_insert_func emit;

-   tnl_extract_func extract;

-   const GLfloat *vp;   /* NDC->Viewport mapping matrix */

-};

-

-

-

-

-typedef void (*tnl_points_func)( struct gl_context *ctx, GLuint first, GLuint last );

-typedef void (*tnl_line_func)( struct gl_context *ctx, GLuint v1, GLuint v2 );

-typedef void (*tnl_triangle_func)( struct gl_context *ctx,

-				   GLuint v1, GLuint v2, GLuint v3 );

-typedef void (*tnl_quad_func)( struct gl_context *ctx, GLuint v1, GLuint v2,

-			       GLuint v3, GLuint v4 );

-typedef void (*tnl_render_func)( struct gl_context *ctx, GLuint start, GLuint count,

-				 GLuint flags );

-typedef void (*tnl_interp_func)( struct gl_context *ctx,

-				 GLfloat t, GLuint dst, GLuint out, GLuint in,

-				 GLboolean force_boundary );

-typedef void (*tnl_copy_pv_func)( struct gl_context *ctx, GLuint dst, GLuint src );

-typedef void (*tnl_setup_func)( struct gl_context *ctx,

-				GLuint start, GLuint end,

-				GLuint new_inputs);

-

-

-struct tnl_attr_type {

-   GLuint format;

-   GLuint size;

-   GLuint stride;

-   GLuint offset;

-};

-

-struct tnl_clipspace_fastpath {

-   GLuint vertex_size;

-   GLuint attr_count;

-   GLboolean match_strides;

-

-   struct tnl_attr_type *attr;

-

-   tnl_emit_func func;

-   struct tnl_clipspace_fastpath *next;

-};

-

-/**

- * Used to describe conversion of vertex arrays to vertex structures.

- * I.e. Structure of arrays to arrays of structs.

- */

-struct tnl_clipspace

-{

-   GLboolean need_extras;

-   

-   GLuint new_inputs;

-

-   GLubyte *vertex_buf;

-   GLuint vertex_size;

-   GLuint max_vertex_size;

-

-   struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];

-   GLuint attr_count;

-

-   tnl_emit_func emit;

-   tnl_interp_func interp;

-   tnl_copy_pv_func copy_pv;

-

-   /* Parameters and constants for codegen:

-    */

-   GLboolean need_viewport;

-   GLfloat vp_scale[4];		

-   GLfloat vp_xlate[4];

-   GLfloat chan_scale[4];

-   GLfloat identity[4];

-

-   struct tnl_clipspace_fastpath *fastpath;

-   

-   void (*codegen_emit)( struct gl_context *ctx );

-};

-

-

-struct tnl_device_driver

-{

-   /***

-    *** TNL Pipeline

-    ***/

-

-   void (*RunPipeline)(struct gl_context *ctx);

-   /* Replaces PipelineStart/PipelineFinish -- intended to allow

-    * drivers to wrap _tnl_run_pipeline() with code to validate state

-    * and grab/release hardware locks.  

-    */

-

-   void (*NotifyMaterialChange)(struct gl_context *ctx);

-   /* Alert tnl-aware drivers of changes to material.

-    */

-

-   /***

-    *** Rendering -- These functions called only from t_vb_render.c

-    ***/

-   struct

-   {

-      void (*Start)(struct gl_context *ctx);

-      void (*Finish)(struct gl_context *ctx);

-      /* Called before and after all rendering operations, including DrawPixels,

-       * ReadPixels, Bitmap, span functions, and CopyTexImage, etc commands.

-       * These are a suitable place for grabbing/releasing hardware locks.

-       */

-

-      void (*PrimitiveNotify)(struct gl_context *ctx, GLenum mode);

-      /* Called between RenderStart() and RenderFinish() to indicate the

-       * type of primitive we're about to draw.  Mode will be one of the

-       * modes accepted by glBegin().

-       */

-

-      tnl_interp_func Interp;

-      /* The interp function is called by the clipping routines when we need

-       * to generate an interpolated vertex.  All pertinant vertex ancilliary

-       * data should be computed by interpolating between the 'in' and 'out'

-       * vertices.

-       */

-

-      tnl_copy_pv_func CopyPV;

-      /* The copy function is used to make a copy of a vertex.  All pertinant

-       * vertex attributes should be copied.

-       */

-

-      void (*ClippedPolygon)( struct gl_context *ctx, const GLuint *elts, GLuint n );

-      /* Render a polygon with <n> vertices whose indexes are in the <elts>

-       * array.

-       */

-

-      void (*ClippedLine)( struct gl_context *ctx, GLuint v0, GLuint v1 );

-      /* Render a line between the two vertices given by indexes v0 and v1. */

-

-      tnl_points_func           Points; /* must now respect vb->elts */

-      tnl_line_func             Line;

-      tnl_triangle_func         Triangle;

-      tnl_quad_func             Quad;

-      /* These functions are called in order to render points, lines,

-       * triangles and quads.  These are only called via the T&L module.

-       */

-

-      tnl_render_func          *PrimTabVerts;

-      tnl_render_func          *PrimTabElts;

-      /* Render whole unclipped primitives (points, lines, linestrips,

-       * lineloops, etc).  The tables are indexed by the GL enum of the

-       * primitive to be rendered.  RenderTabVerts is used for non-indexed

-       * arrays of vertices.  RenderTabElts is used for indexed arrays of

-       * vertices.

-       */

-

-      void (*ResetLineStipple)( struct gl_context *ctx );

-      /* Reset the hardware's line stipple counter.

-       */

-

-      tnl_setup_func BuildVertices;

-      /* This function is called whenever new vertices are required for

-       * rendering.  The vertices in question are those n such that start

-       * <= n < end.  The new_inputs parameter indicates those fields of

-       * the vertex which need to be updated, if only a partial repair of

-       * the vertex is required.

-       *

-       * This function is called only from _tnl_render_stage in tnl/t_render.c.

-       */

-      

-

-      GLboolean (*Multipass)( struct gl_context *ctx, GLuint passno );

-      /* Driver may request additional render passes by returning GL_TRUE

-       * when this function is called.  This function will be called

-       * after the first pass, and passes will be made until the function

-       * returns GL_FALSE.  If no function is registered, only one pass

-       * is made.

-       *

-       * This function will be first invoked with passno == 1.

-       */

-   } Render;

-};

-

-

-#define DECLARE_RENDERINPUTS(name) BITSET64_DECLARE(name, _TNL_ATTRIB_MAX)

-#define RENDERINPUTS_COPY BITSET64_COPY

-#define RENDERINPUTS_EQUAL BITSET64_EQUAL

-#define RENDERINPUTS_ZERO BITSET64_ZERO

-#define RENDERINPUTS_ONES BITSET64_ONES

-#define RENDERINPUTS_TEST BITSET64_TEST

-#define RENDERINPUTS_SET BITSET64_SET

-#define RENDERINPUTS_CLEAR BITSET64_CLEAR

-#define RENDERINPUTS_TEST_RANGE BITSET64_TEST_RANGE

-#define RENDERINPUTS_SET_RANGE BITSET64_SET_RANGE

-#define RENDERINPUTS_CLEAR_RANGE BITSET64_CLEAR_RANGE

-

-

-/**

- * Context state for T&L context.

- */

-typedef struct

-{

-   /* Driver interface.

-    */

-   struct tnl_device_driver Driver;

-

-   /* Pipeline

-    */

-   struct tnl_pipeline pipeline;

-   struct vertex_buffer vb;

-

-   /* Clipspace/ndc/window vertex managment:

-    */

-   struct tnl_clipspace clipspace;

-

-   /* Probably need a better configuration mechanism:

-    */

-   GLboolean NeedNdcCoords;

-   GLboolean AllowVertexFog;

-   GLboolean AllowPixelFog;

-   GLboolean _DoVertexFog;  /* eval fog function at each vertex? */

-

-   DECLARE_RENDERINPUTS(render_inputs_bitset);

-

-   GLvector4f tmp_inputs[VERT_ATTRIB_MAX];

-

-   /* Temp storage for t_draw.c: 

-    */

-   GLubyte *block[VERT_ATTRIB_MAX];

-   GLuint nr_blocks;

-

-   GLuint CurInstance;

-

-} TNLcontext;

-

-

-

-#define TNL_CONTEXT(ctx) ((TNLcontext *)((ctx)->swtnl_context))

-

-

-#define TYPE_IDX(t) ((t) & 0xf)

-#define MAX_TYPES TYPE_IDX(GL_DOUBLE)+1      /* 0xa + 1 */

-

-

-extern void

-tnl_clip_prepare(struct gl_context *ctx);

-

-

-#endif

+/*
+ * mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2006  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 t_context.h
+ * \brief TnL module datatypes and definitions.
+ * \author Keith Whitwell
+ */
+
+
+/**
+ * \mainpage The TNL-module
+ *
+ * TNL stands for "transform and lighting", i.e. this module implements
+ * a pipeline that receives as input a buffer of vertices and does all
+ * necessary transformations (rotations, clipping, vertex shader etc.)
+ * and passes then the output to the rasterizer.
+ *
+ * The tnl_pipeline contains the array of all stages, which should be
+ * applied. Each stage is a black-box, which is described by an
+ * tnl_pipeline_stage. The function ::_tnl_run_pipeline applies all the
+ * stages to the vertex_buffer TNLcontext::vb, where the vertex data
+ * is stored. The last stage in the pipeline is the rasterizer.
+ *
+ */
+
+
+#ifndef _T_CONTEXT_H
+#define _T_CONTEXT_H
+
+#include "main/glheader.h"
+#include "main/bitset.h"
+#include "main/mtypes.h"
+
+#include "math/m_vector.h"
+
+#include "vbo/vbo.h"
+
+#define MAX_PIPELINE_STAGES     30
+
+/*
+ * Note: The first attributes match the VERT_ATTRIB_* definitions
+ * in mtypes.h.  However, the tnl module has additional attributes
+ * for materials, color indexes, edge flags, etc.
+ */
+/* Although it's nice to use these as bit indexes in a DWORD flag, we
+ * could manage without if necessary.  Another limit currently is the
+ * number of bits allocated for these numbers in places like vertex
+ * program instruction formats and register layouts.
+ */
+/* The bit space exhaustion is a fact now, done by _TNL_ATTRIB_ATTRIBUTE* for
+ * GLSL vertex shader which cannot be aliased with conventional vertex attribs.
+ * Compacting _TNL_ATTRIB_MAT_* attribs would not work, they would not give
+ * as many free bits (11 plus already 1 free bit) as _TNL_ATTRIB_ATTRIBUTE*
+ * attribs want (16).
+ */
+enum {
+	_TNL_ATTRIB_POS = 0,
+	_TNL_ATTRIB_WEIGHT = 1,
+	_TNL_ATTRIB_NORMAL = 2,
+	_TNL_ATTRIB_COLOR0 = 3,
+	_TNL_ATTRIB_COLOR1 = 4,
+	_TNL_ATTRIB_FOG = 5,
+	_TNL_ATTRIB_COLOR_INDEX = 6,
+	_TNL_ATTRIB_EDGEFLAG = 7,
+	_TNL_ATTRIB_TEX0 = 8,
+	_TNL_ATTRIB_TEX1 = 9,
+	_TNL_ATTRIB_TEX2 = 10,
+	_TNL_ATTRIB_TEX3 = 11,
+	_TNL_ATTRIB_TEX4 = 12,
+	_TNL_ATTRIB_TEX5 = 13,
+	_TNL_ATTRIB_TEX6 = 14,
+	_TNL_ATTRIB_TEX7 = 15,
+
+	_TNL_ATTRIB_GENERIC0 = 17, /* doesn't really exist! */
+	_TNL_ATTRIB_GENERIC1 = 18,
+	_TNL_ATTRIB_GENERIC2 = 19,
+	_TNL_ATTRIB_GENERIC3 = 20,
+	_TNL_ATTRIB_GENERIC4 = 21,
+	_TNL_ATTRIB_GENERIC5 = 22,
+	_TNL_ATTRIB_GENERIC6 = 23,
+	_TNL_ATTRIB_GENERIC7 = 24,
+	_TNL_ATTRIB_GENERIC8 = 25,
+	_TNL_ATTRIB_GENERIC9 = 26,
+	_TNL_ATTRIB_GENERIC10 = 27,
+	_TNL_ATTRIB_GENERIC11 = 28,
+	_TNL_ATTRIB_GENERIC12 = 29,
+	_TNL_ATTRIB_GENERIC13 = 30,
+	_TNL_ATTRIB_GENERIC14 = 31,
+	_TNL_ATTRIB_GENERIC15 = 32,
+
+	/* These alias with the generics, but they are not active
+	 * concurrently, so it's not a problem.  The TNL module
+	 * doesn't have to do anything about this as this is how they
+	 * are passed into the _draw_prims callback.
+	 *
+	 * When we generate fixed-function replacement programs (in
+	 * t_vp_build.c currently), they refer to the appropriate
+	 * generic attribute in order to pick up per-vertex material
+	 * data.
+	 */
+	_TNL_ATTRIB_MAT_FRONT_AMBIENT = 17,
+	_TNL_ATTRIB_MAT_BACK_AMBIENT = 18,
+	_TNL_ATTRIB_MAT_FRONT_DIFFUSE = 19,
+	_TNL_ATTRIB_MAT_BACK_DIFFUSE = 20,
+	_TNL_ATTRIB_MAT_FRONT_SPECULAR = 21,
+	_TNL_ATTRIB_MAT_BACK_SPECULAR = 22,
+	_TNL_ATTRIB_MAT_FRONT_EMISSION = 23,
+	_TNL_ATTRIB_MAT_BACK_EMISSION = 24,
+	_TNL_ATTRIB_MAT_FRONT_SHININESS = 25,
+	_TNL_ATTRIB_MAT_BACK_SHININESS = 26,
+	_TNL_ATTRIB_MAT_FRONT_INDEXES = 27,
+	_TNL_ATTRIB_MAT_BACK_INDEXES = 28,
+
+	/* This is really a VERT_RESULT, not an attrib.  Need to fix
+	 * tnl to understand the difference.
+	 */
+	_TNL_ATTRIB_POINTSIZE = 16,
+
+	_TNL_ATTRIB_MAX = 33
+} ;
+
+#define _TNL_ATTRIB_TEX(u)       (_TNL_ATTRIB_TEX0 + (u))
+#define _TNL_ATTRIB_GENERIC(n) (_TNL_ATTRIB_GENERIC0 + (n))
+
+/* special index used for handing invalid glVertexAttribute() indices */
+#define _TNL_ATTRIB_ERROR    (_TNL_ATTRIB_GENERIC15 + 1)
+
+/**
+ * Handy attribute ranges:
+ */
+#define _TNL_FIRST_PROG      _TNL_ATTRIB_WEIGHT
+#define _TNL_LAST_PROG       _TNL_ATTRIB_TEX7
+
+#define _TNL_FIRST_TEX       _TNL_ATTRIB_TEX0
+#define _TNL_LAST_TEX        _TNL_ATTRIB_TEX7
+
+#define _TNL_FIRST_GENERIC _TNL_ATTRIB_GENERIC0
+#define _TNL_LAST_GENERIC  _TNL_ATTRIB_GENERIC15
+
+#define _TNL_FIRST_MAT       _TNL_ATTRIB_MAT_FRONT_AMBIENT /* GENERIC0 */
+#define _TNL_LAST_MAT        _TNL_ATTRIB_MAT_BACK_INDEXES  /* GENERIC11 */
+
+/* Number of available generic attributes */
+#define _TNL_NUM_GENERIC 16
+
+/* Number of attributes used for evaluators */
+#define _TNL_NUM_EVAL 16
+
+
+#define PRIM_BEGIN     0x10
+#define PRIM_END       0x20
+#define PRIM_MODE_MASK 0x0f
+
+static inline GLuint _tnl_translate_prim( const struct _mesa_prim *prim )
+{
+   GLuint flag;
+   flag = prim->mode;
+   if (prim->begin) flag |= PRIM_BEGIN;
+   if (prim->end) flag |= PRIM_END;
+   return flag;
+}
+
+
+
+
+/**
+ * Contains the current state of a running pipeline.
+ */
+struct vertex_buffer
+{
+   GLuint Size;  /**< Max vertices per vertex buffer, constant */
+
+   /* Constant over the pipeline.
+    */
+   GLuint Count;  /**< Number of vertices currently in buffer */
+
+   /* Pointers to current data.  Most of the data is in AttribPtr -- all of
+    * it that is one of VERT_ATTRIB_X.  For things only produced by TNL,
+    * such as backface color or eye-space coordinates, they are stored
+    * here.
+    */
+   GLuint      *Elts;		                
+   GLvector4f  *EyePtr;		                /* _TNL_BIT_POS */
+   GLvector4f  *ClipPtr;	                /* _TNL_BIT_POS */
+   GLvector4f  *NdcPtr;                         /* _TNL_BIT_POS */
+   GLubyte     ClipOrMask;	                /* _TNL_BIT_POS */
+   GLubyte     ClipAndMask;	                /* _TNL_BIT_POS */
+   GLubyte     *ClipMask;		        /* _TNL_BIT_POS */
+   GLfloat     *NormalLengthPtr;	        /* _TNL_BIT_NORMAL */
+   GLboolean   *EdgeFlag;	                /* _TNL_BIT_EDGEFLAG */
+   GLvector4f  *BackfaceIndexPtr;
+   GLvector4f  *BackfaceColorPtr;
+   GLvector4f  *BackfaceSecondaryColorPtr;
+
+   const struct _mesa_prim  *Primitive;	              
+   GLuint      PrimitiveCount;	      
+
+   /* Inputs to the vertex program stage */
+   GLvector4f *AttribPtr[_TNL_ATTRIB_MAX];      /* GL_NV_vertex_program */
+};
+
+
+/**
+ * Describes an individual operation on the pipeline.
+ */
+struct tnl_pipeline_stage
+{
+   const char *name;
+
+   /* Private data for the pipeline stage:
+    */
+   void *privatePtr;
+
+   /* Allocate private data
+    */
+   GLboolean (*create)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+
+   /* Free private data.
+    */
+   void (*destroy)( struct tnl_pipeline_stage * );
+
+   /* Called on any statechange or input array size change or
+    * input array change to/from zero stride.
+    */
+   void (*validate)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+
+   /* Called from _tnl_run_pipeline().  The stage.changed_inputs value
+    * encodes all inputs to thee struct which have changed.  If
+    * non-zero, recompute all affected outputs of the stage, otherwise
+    * execute any 'sideeffects' of the stage.
+    *
+    * Return value: GL_TRUE - keep going
+    *               GL_FALSE - finished pipeline
+    */
+   GLboolean (*run)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+};
+
+
+
+/** Contains the array of all pipeline stages.
+ * The default values are defined at the end of t_pipeline.c 
+ */
+struct tnl_pipeline {
+   
+   GLuint last_attrib_stride[_TNL_ATTRIB_MAX];
+   GLuint last_attrib_size[_TNL_ATTRIB_MAX];
+   GLuint input_changes;
+   GLuint new_state;
+
+   struct tnl_pipeline_stage stages[MAX_PIPELINE_STAGES+1];
+   GLuint nr_stages;
+};
+
+struct tnl_clipspace;
+struct tnl_clipspace_attr;
+
+typedef void (*tnl_extract_func)( const struct tnl_clipspace_attr *a, 
+				  GLfloat *out, 
+				  const GLubyte *v );
+
+typedef void (*tnl_insert_func)( const struct tnl_clipspace_attr *a, 
+				 GLubyte *v, 
+				 const GLfloat *in );
+
+typedef void (*tnl_emit_func)( struct gl_context *ctx, 
+			       GLuint count, 
+			       GLubyte *dest );
+
+
+/**
+ * Describes how to convert/move a vertex attribute from a vertex array
+ * to a vertex structure.
+ */
+struct tnl_clipspace_attr
+{
+   GLuint attrib;          /* which vertex attrib (0=position, etc) */
+   GLuint format;
+   GLuint vertoffset;      /* position of the attrib in the vertex struct */
+   GLuint vertattrsize;    /* size of the attribute in bytes */
+   GLubyte *inputptr;
+   GLuint inputstride;
+   GLuint inputsize;
+   const tnl_insert_func *insert;
+   tnl_insert_func emit;
+   tnl_extract_func extract;
+   const GLfloat *vp;   /* NDC->Viewport mapping matrix */
+};
+
+
+
+
+typedef void (*tnl_points_func)( struct gl_context *ctx, GLuint first, GLuint last );
+typedef void (*tnl_line_func)( struct gl_context *ctx, GLuint v1, GLuint v2 );
+typedef void (*tnl_triangle_func)( struct gl_context *ctx,
+				   GLuint v1, GLuint v2, GLuint v3 );
+typedef void (*tnl_quad_func)( struct gl_context *ctx, GLuint v1, GLuint v2,
+			       GLuint v3, GLuint v4 );
+typedef void (*tnl_render_func)( struct gl_context *ctx, GLuint start, GLuint count,
+				 GLuint flags );
+typedef void (*tnl_interp_func)( struct gl_context *ctx,
+				 GLfloat t, GLuint dst, GLuint out, GLuint in,
+				 GLboolean force_boundary );
+typedef void (*tnl_copy_pv_func)( struct gl_context *ctx, GLuint dst, GLuint src );
+typedef void (*tnl_setup_func)( struct gl_context *ctx,
+				GLuint start, GLuint end,
+				GLuint new_inputs);
+
+
+struct tnl_attr_type {
+   GLuint format;
+   GLuint size;
+   GLuint stride;
+   GLuint offset;
+};
+
+struct tnl_clipspace_fastpath {
+   GLuint vertex_size;
+   GLuint attr_count;
+   GLboolean match_strides;
+
+   struct tnl_attr_type *attr;
+
+   tnl_emit_func func;
+   struct tnl_clipspace_fastpath *next;
+};
+
+/**
+ * Used to describe conversion of vertex arrays to vertex structures.
+ * I.e. Structure of arrays to arrays of structs.
+ */
+struct tnl_clipspace
+{
+   GLboolean need_extras;
+   
+   GLuint new_inputs;
+
+   GLubyte *vertex_buf;
+   GLuint vertex_size;
+   GLuint max_vertex_size;
+
+   struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];
+   GLuint attr_count;
+
+   tnl_emit_func emit;
+   tnl_interp_func interp;
+   tnl_copy_pv_func copy_pv;
+
+   /* Parameters and constants for codegen:
+    */
+   GLboolean need_viewport;
+   GLfloat vp_scale[4];		
+   GLfloat vp_xlate[4];
+   GLfloat chan_scale[4];
+   GLfloat identity[4];
+
+   struct tnl_clipspace_fastpath *fastpath;
+   
+   void (*codegen_emit)( struct gl_context *ctx );
+};
+
+
+struct tnl_device_driver
+{
+   /***
+    *** TNL Pipeline
+    ***/
+
+   void (*RunPipeline)(struct gl_context *ctx);
+   /* Replaces PipelineStart/PipelineFinish -- intended to allow
+    * drivers to wrap _tnl_run_pipeline() with code to validate state
+    * and grab/release hardware locks.  
+    */
+
+   void (*NotifyMaterialChange)(struct gl_context *ctx);
+   /* Alert tnl-aware drivers of changes to material.
+    */
+
+   /***
+    *** Rendering -- These functions called only from t_vb_render.c
+    ***/
+   struct
+   {
+      void (*Start)(struct gl_context *ctx);
+      void (*Finish)(struct gl_context *ctx);
+      /* Called before and after all rendering operations, including DrawPixels,
+       * ReadPixels, Bitmap, span functions, and CopyTexImage, etc commands.
+       * These are a suitable place for grabbing/releasing hardware locks.
+       */
+
+      void (*PrimitiveNotify)(struct gl_context *ctx, GLenum mode);
+      /* Called between RenderStart() and RenderFinish() to indicate the
+       * type of primitive we're about to draw.  Mode will be one of the
+       * modes accepted by glBegin().
+       */
+
+      tnl_interp_func Interp;
+      /* The interp function is called by the clipping routines when we need
+       * to generate an interpolated vertex.  All pertinant vertex ancilliary
+       * data should be computed by interpolating between the 'in' and 'out'
+       * vertices.
+       */
+
+      tnl_copy_pv_func CopyPV;
+      /* The copy function is used to make a copy of a vertex.  All pertinant
+       * vertex attributes should be copied.
+       */
+
+      void (*ClippedPolygon)( struct gl_context *ctx, const GLuint *elts, GLuint n );
+      /* Render a polygon with <n> vertices whose indexes are in the <elts>
+       * array.
+       */
+
+      void (*ClippedLine)( struct gl_context *ctx, GLuint v0, GLuint v1 );
+      /* Render a line between the two vertices given by indexes v0 and v1. */
+
+      tnl_points_func           Points; /* must now respect vb->elts */
+      tnl_line_func             Line;
+      tnl_triangle_func         Triangle;
+      tnl_quad_func             Quad;
+      /* These functions are called in order to render points, lines,
+       * triangles and quads.  These are only called via the T&L module.
+       */
+
+      tnl_render_func          *PrimTabVerts;
+      tnl_render_func          *PrimTabElts;
+      /* Render whole unclipped primitives (points, lines, linestrips,
+       * lineloops, etc).  The tables are indexed by the GL enum of the
+       * primitive to be rendered.  RenderTabVerts is used for non-indexed
+       * arrays of vertices.  RenderTabElts is used for indexed arrays of
+       * vertices.
+       */
+
+      void (*ResetLineStipple)( struct gl_context *ctx );
+      /* Reset the hardware's line stipple counter.
+       */
+
+      tnl_setup_func BuildVertices;
+      /* This function is called whenever new vertices are required for
+       * rendering.  The vertices in question are those n such that start
+       * <= n < end.  The new_inputs parameter indicates those fields of
+       * the vertex which need to be updated, if only a partial repair of
+       * the vertex is required.
+       *
+       * This function is called only from _tnl_render_stage in tnl/t_render.c.
+       */
+      
+
+      GLboolean (*Multipass)( struct gl_context *ctx, GLuint passno );
+      /* Driver may request additional render passes by returning GL_TRUE
+       * when this function is called.  This function will be called
+       * after the first pass, and passes will be made until the function
+       * returns GL_FALSE.  If no function is registered, only one pass
+       * is made.
+       *
+       * This function will be first invoked with passno == 1.
+       */
+   } Render;
+};
+
+
+#define DECLARE_RENDERINPUTS(name) BITSET64_DECLARE(name, _TNL_ATTRIB_MAX)
+#define RENDERINPUTS_COPY BITSET64_COPY
+#define RENDERINPUTS_EQUAL BITSET64_EQUAL
+#define RENDERINPUTS_ZERO BITSET64_ZERO
+#define RENDERINPUTS_ONES BITSET64_ONES
+#define RENDERINPUTS_TEST BITSET64_TEST
+#define RENDERINPUTS_SET BITSET64_SET
+#define RENDERINPUTS_CLEAR BITSET64_CLEAR
+#define RENDERINPUTS_TEST_RANGE BITSET64_TEST_RANGE
+#define RENDERINPUTS_SET_RANGE BITSET64_SET_RANGE
+#define RENDERINPUTS_CLEAR_RANGE BITSET64_CLEAR_RANGE
+
+
+/**
+ * Context state for T&L context.
+ */
+typedef struct
+{
+   /* Driver interface.
+    */
+   struct tnl_device_driver Driver;
+
+   /* Pipeline
+    */
+   struct tnl_pipeline pipeline;
+   struct vertex_buffer vb;
+
+   /* Clipspace/ndc/window vertex managment:
+    */
+   struct tnl_clipspace clipspace;
+
+   /* Probably need a better configuration mechanism:
+    */
+   GLboolean NeedNdcCoords;
+   GLboolean AllowVertexFog;
+   GLboolean AllowPixelFog;
+   GLboolean _DoVertexFog;  /* eval fog function at each vertex? */
+
+   DECLARE_RENDERINPUTS(render_inputs_bitset);
+
+   GLvector4f tmp_inputs[VERT_ATTRIB_MAX];
+
+   /* Temp storage for t_draw.c: 
+    */
+   GLubyte *block[VERT_ATTRIB_MAX];
+   GLuint nr_blocks;
+
+   GLuint CurInstance;
+} TNLcontext;
+
+
+
+#define TNL_CONTEXT(ctx) ((TNLcontext *)((ctx)->swtnl_context))
+
+
+#define TYPE_IDX(t) ((t) & 0xf)
+#define MAX_TYPES TYPE_IDX(GL_DOUBLE)+1      /* 0xa + 1 */
+
+
+extern void
+tnl_clip_prepare(struct gl_context *ctx);
+
+
+#endif