-
-/* $Id: t_context.h,v 1.6 2000/12/08 00:18:39 brianp Exp $ */
-
/*
- * Mesa 3-D graphics library
- * Version: 3.5
+ * mesa 3-D graphics library
+ * Version: 6.5
*
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
+ * 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"),
* 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 "glheader.h"
-#include "mtypes.h"
+#include "main/glheader.h"
+#include "main/bitset.h"
+#include "main/mtypes.h"
#include "math/m_matrix.h"
#include "math/m_vector.h"
#include "math/m_xform.h"
-#include "t_trans_elt.h"
-
+#include "vbo/vbo.h"
+#define MAX_PIPELINE_STAGES 30
/*
- * Bits to indicate which faces a vertex participates in,
- * what facing the primitive provoked by that vertex has,
- * and some misc. flags.
+ * 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.
*/
-#define VERT_FACE_FRONT 0x1 /* is in a front-color primitive */
-#define VERT_FACE_REAR 0x2 /* is in a rear-color primitive */
-#define PRIM_FACE_FRONT 0x4 /* use front color */
-#define PRIM_FACE_REAR 0x8 /* use rear color */
-#define PRIM_CLIPPED 0x10 /* needs clipping */
-#define PRIM_USER_CLIPPED CLIP_USER_BIT /* 0x40 */
-
-
-#define PRIM_FLAG_SHIFT 2
-#define PRIM_FACE_FLAGS (PRIM_FACE_FRONT|PRIM_FACE_REAR)
-#define VERT_FACE_FLAGS (VERT_FACE_FRONT|VERT_FACE_REAR)
-
-#define PRIM_ANY_CLIP (PRIM_CLIPPED|PRIM_USER_CLIPPED)
-#define PRIM_NOT_CULLED (PRIM_ANY_CLIP|PRIM_FACE_FLAGS)
-
-/* Flags for VB->CullMode.
+/* 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).
*/
-#define CULL_MASK_ACTIVE 0x1
-#define COMPACTED_NORMALS 0x2
-#define CLIP_MASK_ACTIVE 0x4
+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)
-/* Flags for selecting a shading function. The first two bits are
- * shared with the cull mode (ie. cull_mask_active and
- * compacted_normals.)
+/**
+ * Handy attribute ranges:
*/
-#define SHADE_TWOSIDE 0x4
+#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
-/* KW: Flags that describe the current vertex state, and the contents
- * of a vertex in a vertex-cassette.
- *
- * For really major expansion, consider a 'VERT_ADDITIONAL_FLAGS' flag,
- * which means there is data in another flags array (eg, extra_flags[]).
- */
+#define _TNL_FIRST_GENERIC _TNL_ATTRIB_GENERIC0
+#define _TNL_LAST_GENERIC _TNL_ATTRIB_GENERIC15
-#define VERT_OBJ_2 0x1 /* glVertex2 */
-#define VERT_OBJ_3 0x2 /* glVertex3 */
-#define VERT_OBJ_4 0x4 /* glVertex4 */
-#define VERT_BEGIN 0x8 /* glBegin */
-#define VERT_END 0x10 /* glEnd */
-#define VERT_ELT 0x20 /* glArrayElement */
-#define VERT_RGBA 0x40 /* glColor */
-#define VERT_NORM 0x80 /* glNormal */
-#define VERT_INDEX 0x100 /* glIndex */
-#define VERT_EDGE 0x200 /* glEdgeFlag */
-#define VERT_MATERIAL 0x400 /* glMaterial */
-#define VERT_END_VB 0x800 /* end vb marker */
-#define VERT_TEX0 0x1000
-#define VERT_TEX1 0x2000
-#define VERT_TEX2 0x3000
-#define VERT_TEX3 0x4000
-#define VERT_TEX4 0x10000
-#define VERT_TEX5 0x20000
-#define VERT_TEX6 0x30000
-#define VERT_TEX7 0x40000
-#define VERT_TEX8 0x100000
-#define VERT_TEX9 0x200000
-#define VERT_TEX10 0x300000
-#define VERT_TEX11 0x400000
-#define VERT_EVAL_C1 0x1000000 /* could reuse OBJ bits for this? */
-#define VERT_EVAL_C2 0x2000000 /* - or just use 3 bits */
-#define VERT_EVAL_P1 0x4000000 /* */
-#define VERT_EVAL_P2 0x8000000 /* */
-#define VERT_SPEC_RGB 0x10000000
-#define VERT_FOG_COORD 0x20000000
-#define VERT_POINT_SIZE 0x40000000
-
-#define VERT_EYE VERT_BEGIN /* reuse */
-#define VERT_WIN VERT_END /* reuse */
-#define VERT_SETUP_FULL VERT_EVAL_P1 /* Rastersetup has been done */
-#define VERT_PRECALC_DATA VERT_END_VB /* reuse */
-
-/* Shorthands.
- */
+#define _TNL_FIRST_MAT _TNL_ATTRIB_MAT_FRONT_AMBIENT /* GENERIC0 */
+#define _TNL_LAST_MAT _TNL_ATTRIB_MAT_BACK_INDEXES /* GENERIC11 */
-#define VERT_EVAL_ANY (VERT_EVAL_C1|VERT_EVAL_P1| \
- VERT_EVAL_C2|VERT_EVAL_P2)
-
-#define VERT_OBJ_23 (VERT_OBJ_3|VERT_OBJ_2)
-#define VERT_OBJ_234 (VERT_OBJ_4|VERT_OBJ_23)
-#define VERT_OBJ_ANY VERT_OBJ_2
-
-#define VERT_TEX0_SHIFT 11
-#define VERT_TEX(i) (VERT_TEX0 << i)
-#define VERT_TEX_ANY (VERT_TEX0 | \
- VERT_TEX1 | \
- VERT_TEX2 | \
- VERT_TEX3 | \
- VERT_TEX4 | \
- VERT_TEX5 | \
- VERT_TEX6 | \
- VERT_TEX7 | \
- VERT_TEX8 | \
- VERT_TEX9 | \
- VERT_TEX10 | \
- VERT_TEX11)
-
-#define VERT_FIXUP (VERT_TEX_ANY | \
- VERT_RGBA | \
- VERT_SPEC_RGB | \
- VERT_FOG_COORD | \
- VERT_INDEX | \
- VERT_EDGE | \
- VERT_NORM)
-
-#define VERT_DATA (VERT_TEX_ANY | \
- VERT_RGBA | \
- VERT_SPEC_RGB | \
- VERT_FOG_COORD | \
- VERT_INDEX | \
- VERT_EDGE | \
- VERT_NORM | \
- VERT_OBJ_ANY | \
- VERT_MATERIAL | \
- VERT_ELT | \
- VERT_EVAL_ANY | \
- VERT_FOG_COORD)
-
-
-
-
-struct gl_pipeline;
-struct tnl_context;
+/* Number of available generic attributes */
+#define _TNL_NUM_GENERIC 16
-/**
- ** Vertex buffer/array structures
- **/
+/* Number of attributes used for evaluators */
+#define _TNL_NUM_EVAL 16
-struct vertex_data
-{
- GLfloat (*Obj)[4];
- GLfloat (*Normal)[3];
- GLchan (*Color)[4];
- GLuint *Index;
- GLubyte *EdgeFlag;
- GLfloat (*TexCoord[MAX_TEXTURE_UNITS])[4];
- GLuint *Elt;
- GLfloat *FogCoord;
- GLubyte (*SecondaryColor)[4];
-};
-struct vertex_arrays
-{
- GLvector4f Obj;
- GLvector3f Normal;
- GLvector4ub Color;
- GLvector1ui Index;
- GLvector1ub EdgeFlag;
- GLvector4f TexCoord[MAX_TEXTURE_UNITS];
- GLvector1ui Elt;
- GLvector4ub SecondaryColor;
- GLvector1f FogCoord;
-};
+#define PRIM_BEGIN 0x10
+#define PRIM_END 0x20
+#define PRIM_MODE_MASK 0x0f
-struct vertex_array_pointers
+static INLINE GLuint _tnl_translate_prim( const struct _mesa_prim *prim )
{
- GLvector4f *Obj;
- GLvector3f *Normal;
- GLvector4ub *Color;
- GLvector1ui *Index;
- GLvector1ub *EdgeFlag;
- GLvector4f *TexCoord[MAX_TEXTURE_UNITS];
- GLvector1ui *Elt;
- GLvector4ub *SecondaryColor;
- GLvector1f *FogCoord;
-};
+ GLuint flag;
+ flag = prim->mode;
+ if (prim->begin) flag |= PRIM_BEGIN;
+ if (prim->end) flag |= PRIM_END;
+ return flag;
+}
-/* Values for VB->Type */
-enum {
- VB_IMMEDIATE,
- VB_CVA_PRECALC
-};
-/* Values for immediate->BeginState */
-#define VERT_BEGIN_0 0x1 /* glBegin (if initially inside beg/end) */
-#define VERT_BEGIN_1 0x2 /* glBegin (if initially outside beg/end) */
-#define VERT_ERROR_0 0x4 /* invalid_operation in initial state 0 */
-#define VERT_ERROR_1 0x8 /* invalid_operation in initial state 1 */
-/* KW: Represents everything that can take place between a begin and
- * end, and can represent multiple begin/end pairs. This plus *any*
- * state variable (GLcontext) should be all you need to replay the
- * represented begin/end pairs as if they took place in that state.
- *
- * Thus this is sufficient for both immediate and compiled modes, but
- * we could/should throw some elements away for compiled mode if we
- * know they were empty.
+/**
+ * Contains the current state of a running pipeline.
*/
-struct immediate
+struct vertex_buffer
{
- struct immediate *next; /* for cache of free IM's */
- GLuint id, ref_count;
+ GLuint Size; /**< Max vertices per vertex buffer, constant */
- /* This must be saved when immediates are shared in display lists.
+ /* Constant over the pipeline.
*/
- GLuint Start, Count;
- GLuint LastData; /* count or count+1 */
- GLuint AndFlag, OrFlag;
- GLuint Tex3Flag, Tex4Flag; /* keep track of texcoord sizes */
- GLuint BeginState, SavedBeginState;
- GLuint LastPrimitive;
-
- GLuint ArrayAndFlags; /* precalc'ed for glArrayElt */
- GLuint ArrayIncr;
- GLuint ArrayEltFlush;
- GLuint FlushElt;
-
- GLuint Primitive[VB_SIZE]; /* GLubyte would do... */
- GLuint NextPrimitive[VB_SIZE];
-
- /* allocate storage for these on demand:
- */
- struct gl_material (*Material)[2];
- GLuint *MaterialMask;
-
- GLfloat (*TexCoordPtr[MAX_TEXTURE_UNITS])[4];
-
- struct vertex_arrays v;
+ GLuint Count; /**< Number of vertices currently in buffer */
- struct __GLcontextRec *backref;
-
- /* Normal lengths, zero if not available.
+ /* Pointers to current data.
+ * XXX some of these fields alias AttribPtr below and should be removed
+ * such as NormalPtr, TexCoordPtr, FogCoordPtr, etc.
*/
- GLfloat *NormalLengths;
- GLuint LastCalcedLength;
-
- GLuint Flag[VB_SIZE]; /* bitwise-OR of VERT_ flags */
- GLchan Color[VB_SIZE][4];
- GLfloat Obj[VB_SIZE][4];
- GLfloat Normal[VB_SIZE][3];
- GLfloat TexCoord[MAX_TEXTURE_UNITS][VB_SIZE][4];
- GLuint Elt[VB_SIZE];
- GLubyte EdgeFlag[VB_SIZE];
- GLuint Index[VB_SIZE];
- GLubyte SecondaryColor[VB_SIZE][4];
- GLfloat FogCoord[VB_SIZE];
+ GLuint *Elts;
+ GLvector4f *ObjPtr; /* _TNL_BIT_POS */
+ GLvector4f *EyePtr; /* _TNL_BIT_POS */
+ GLvector4f *ClipPtr; /* _TNL_BIT_POS */
+ GLvector4f *NdcPtr; /* _TNL_BIT_POS */
+ GLfloat *ClipDistancePtr[MAX_CLIP_PLANES]; /* _TNL_BIT_POS */
+ GLubyte ClipOrMask; /* _TNL_BIT_POS */
+ GLubyte ClipAndMask; /* _TNL_BIT_POS */
+ GLubyte *ClipMask; /* _TNL_BIT_POS */
+ GLvector4f *NormalPtr; /* _TNL_BIT_NORMAL */
+ GLfloat *NormalLengthPtr; /* _TNL_BIT_NORMAL */
+ GLboolean *EdgeFlag; /* _TNL_BIT_EDGEFLAG */
+ GLvector4f *TexCoordPtr[MAX_TEXTURE_COORD_UNITS]; /* VERT_TEX_0..n */
+ GLvector4f *IndexPtr[2]; /* _TNL_BIT_INDEX */
+ GLvector4f *ColorPtr[2]; /* _TNL_BIT_COLOR0 */
+ GLvector4f *SecondaryColorPtr[2]; /* _TNL_BIT_COLOR1 */
+ GLvector4f *FogCoordPtr; /* _TNL_BIT_FOG */
+
+ const struct _mesa_prim *Primitive;
+ GLuint PrimitiveCount;
+
+ /* Inputs to the vertex program stage */
+ GLvector4f *AttribPtr[_TNL_ATTRIB_MAX]; /* GL_NV_vertex_program */
};
-/* Not so big on storage these days, although still has pointers to
- * arrays used for temporary results.
+/**
+ * Describes an individual operation on the pipeline.
*/
-typedef struct vertex_buffer
+struct tnl_pipeline_stage
{
- /* Backpointers.
- */
- struct __GLcontextRec *ctx;
- struct tnl_context *tnlctx;
+ const char *name;
- /* Driver_data is allocated in Driver.RegisterVB(), if required.
+ /* Private data for the pipeline stage:
*/
- void *driver_data;
+ void *privatePtr;
- /* List of operations to process vertices in current state.
+ /* Allocate private data
*/
- struct gl_pipeline *pipeline;
+ GLboolean (*create)( GLcontext *ctx, struct tnl_pipeline_stage * );
- /* Temporary storage used by immediate mode functions and various
- * operations in the pipeline.
+ /* Free private data.
*/
- struct immediate *IM;
- struct vertex_array_pointers store;
+ void (*destroy)( struct tnl_pipeline_stage * );
- /* Where to find outstanding untransformed vertices.
- */
- struct immediate *prev_buffer;
-
- GLuint Type; /* Either VB_IMMEDIATE or VB_CVA_PRECALC */
-
- GLuint Size, Start, Count;
- GLuint Free, FirstFree;
- GLuint CopyStart;
- GLuint Parity, Ovf;
- GLuint PurgeFlags;
- GLuint IndirectCount; /* defaults to count */
- GLuint OrFlag, SavedOrFlag;
- GLuint Tex3Flag, Tex4Flag;
- GLuint SavedTex3Flag, SavedTex4Flag;
- GLuint EarlyCull;
- GLuint Culled, CullDone;
-
- /* Pointers to input data - default to buffers in 'im' above.
- */
- GLvector4f *ObjPtr;
- GLvector3f *NormalPtr;
- GLvector4ub *ColorPtr;
- GLvector1ui *IndexPtr;
- GLvector1ub *EdgeFlagPtr;
- GLvector4f *TexCoordPtr[MAX_TEXTURE_UNITS];
- GLvector1ui *EltPtr;
- GLvector4ub *SecondaryColorPtr;
- GLvector1f *FogCoordPtr;
- GLuint *Flag, FlagMax;
- struct gl_material (*Material)[2];
- GLuint *MaterialMask;
-
- GLuint *NextPrimitive;
- GLuint *Primitive;
- GLuint LastPrimitive;
-
- GLfloat (*BoundsPtr)[3]; /* Bounds for cull check */
- GLfloat *NormalLengthPtr; /* Array of precomputed inv. normal lengths */
-
- /* Holds malloced storage for pipeline data not supplied by
- * the immediate struct.
+ /* Called on any statechange or input array size change or
+ * input array change to/from zero stride.
*/
- GLvector4f Eye;
- GLvector4f Clip;
- GLvector4f Win;
- GLvector1f PointSize;
- GLvector4ub BColor; /* not used in cva vb's */
- GLvector1ui BIndex; /* not used in cva vb's */
- GLvector4ub BSecondary; /* not used in cva vb's */
-
- /* Temporary storage - may point into IM, or be dynamically
- * allocated (for cva).
- */
- GLubyte *ClipMask;
- GLubyte *UserClipMask;
-
- /* Internal values. Where these point depends on whether
- * there were any identity matrices defined as transformations
- * in the pipeline.
+ void (*validate)( GLcontext *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
*/
- GLvector4f *EyePtr;
- GLvector4f *ClipPtr;
- GLvector4f *Unprojected;
- GLvector4f *Projected;
- GLvector4f *CurrentTexCoord;
- GLuint *Indirect; /* For eval rescue and cva render */
-
- /* Currently active colors
- */
- GLvector4ub *Color[2];
- GLvector1ui *Index[2];
- GLvector4ub *SecondaryColor[2];
-
- /* Storage for colors which have been lit but not yet fogged.
- * Required for CVA, just point into store for normal VB's.
- */
- GLvector4ub *LitColor[2];
- GLvector1ui *LitIndex[2];
- GLvector4ub *LitSecondary[2];
+ GLboolean (*run)( GLcontext *ctx, struct tnl_pipeline_stage * );
+};
- /* Temporary values used in texgen.
- */
- GLfloat (*tmp_f)[3];
- GLfloat *tmp_m;
- /* Temporary values used in eval.
- */
- GLuint *EvaluatedFlags;
- /* Not used for cva:
- */
- GLubyte *NormCullStart;
- GLubyte *CullMask; /* Results of vertex culling */
- GLubyte *NormCullMask; /* Compressed onto shared normals */
+/** 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;
+};
- GLubyte ClipOrMask; /* bitwise-OR of all ClipMask[] values */
- GLubyte ClipAndMask; /* bitwise-AND of all ClipMask[] values */
- GLubyte CullFlag[2];
- GLubyte CullMode; /* see flags below */
+struct tnl_clipspace;
+struct tnl_clipspace_attr;
- GLuint CopyCount; /* max 3 vertices to copy after transform */
- GLuint Copy[3];
- GLfloat CopyProj[3][4]; /* temporary store for projected clip coords */
+typedef void (*tnl_extract_func)( const struct tnl_clipspace_attr *a,
+ GLfloat *out,
+ const GLubyte *v );
- /* Hooks for module private data
- */
- void *swsetup_vb;
+typedef void (*tnl_insert_func)( const struct tnl_clipspace_attr *a,
+ GLubyte *v,
+ const GLfloat *in );
-} TNLvertexbuffer;
+typedef void (*tnl_emit_func)( GLcontext *ctx,
+ GLuint count,
+ GLubyte *dest );
-typedef void (*shade_func)( struct vertex_buffer *VB );
+/**
+ * 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 (*clip_interp_func)( struct vertex_buffer *VB, GLuint dst,
- GLfloat t, GLuint in, GLuint out );
-typedef GLuint (*clip_line_func)( struct vertex_buffer *VB,
- GLuint *i, GLuint *j,
- GLubyte mask);
-typedef GLuint (*clip_poly_func)( struct vertex_buffer *VB,
- GLuint n, GLuint vlist[],
- GLubyte mask );
+typedef void (*tnl_points_func)( GLcontext *ctx, GLuint first, GLuint last );
+typedef void (*tnl_line_func)( GLcontext *ctx, GLuint v1, GLuint v2 );
+typedef void (*tnl_triangle_func)( GLcontext *ctx,
+ GLuint v1, GLuint v2, GLuint v3 );
+typedef void (*tnl_quad_func)( GLcontext *ctx, GLuint v1, GLuint v2,
+ GLuint v3, GLuint v4 );
+typedef void (*tnl_render_func)( GLcontext *ctx, GLuint start, GLuint count,
+ GLuint flags );
+typedef void (*tnl_interp_func)( GLcontext *ctx,
+ GLfloat t, GLuint dst, GLuint out, GLuint in,
+ GLboolean force_boundary );
+typedef void (*tnl_copy_pv_func)( GLcontext *ctx, GLuint dst, GLuint src );
+typedef void (*tnl_setup_func)( GLcontext *ctx,
+ GLuint start, GLuint end,
+ GLuint new_inputs);
-#define MAX_PIPELINE_STAGES 30
-#define PIPE_IMMEDIATE 0x1
-#define PIPE_PRECALC 0x2
+struct tnl_attr_type {
+ GLuint format;
+ GLuint size;
+ GLuint stride;
+ GLuint offset;
+};
-#define PIPE_OP_VERT_XFORM 0x1
-#define PIPE_OP_NORM_XFORM 0x2
-#define PIPE_OP_LIGHT 0x4
-#define PIPE_OP_FOG 0x8
-#define PIPE_OP_TEX 0x10
-#define PIPE_OP_RAST_SETUP_0 0x100
-#define PIPE_OP_RAST_SETUP_1 0x200
-#define PIPE_OP_RENDER 0x400
-#define PIPE_OP_CVA_PREPARE 0x800
-#define PIPE_OP_POINT_SIZE 0x1000
+struct tnl_clipspace_fastpath {
+ GLuint vertex_size;
+ GLuint attr_count;
+ GLboolean match_strides;
+ struct tnl_attr_type *attr;
-struct gl_pipeline_stage {
- const char *name;
- GLuint ops; /* PIPE_OP flags */
- GLuint type; /* VERT flags */
- GLuint special; /* VERT flags - force update_inputs() */
- GLuint state_change; /* state flags - trigger update_inputs() */
- GLuint cva_state_change; /* state flags - recalc cva buffer */
- GLuint elt_forbidden_inputs; /* VERT flags - force a pipeline recalc */
- GLuint pre_forbidden_inputs; /* VERT flags - force a pipeline recalc */
- GLuint active; /* VERT flags */
- GLuint inputs; /* VERT flags */
- GLuint outputs; /* VERT flags */
- void (*check)( GLcontext *ctx, struct gl_pipeline_stage * );
- void (*run)( struct vertex_buffer *VB );
+ tnl_emit_func func;
+ struct tnl_clipspace_fastpath *next;
};
-
-struct gl_pipeline {
- GLuint state_change; /* state changes which require recalc */
- GLuint cva_state_change; /* ... which require re-run */
- GLuint forbidden_inputs; /* inputs which require recalc */
- GLuint ops; /* what gets done in this pipe */
- GLuint changed_ops;
- GLuint inputs;
- GLuint outputs;
+/**
+ * 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;
- GLuint new_outputs;
- GLuint fallback;
- GLuint type;
- GLuint pipeline_valid:1;
- GLuint data_valid:1;
- GLuint copy_transformed_data:1;
- GLuint replay_copied_vertices:1;
- GLuint new_state; /* state changes since last recalc */
- struct gl_pipeline_stage *stages[MAX_PIPELINE_STAGES];
-};
+ GLubyte *vertex_buf;
+ GLuint vertex_size;
+ GLuint max_vertex_size;
+ struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];
+ GLuint attr_count;
-/* All fields are derived.
- */
-struct gl_cva {
- struct gl_pipeline pre;
- struct gl_pipeline elt;
-
- struct gl_client_array Elt;
- trans_1ui_func EltFunc;
-
- struct vertex_buffer *VB;
- struct vertex_arrays v;
- struct vertex_data store;
-
- GLuint elt_count;
- GLenum elt_mode;
- GLuint elt_size;
-
- GLuint forbidden_inputs;
- GLuint orflag;
- GLuint merge;
-
- GLuint locked;
- GLuint lock_changed;
- GLuint last_orflag;
- GLuint last_array_flags;
- GLuint last_array_new_state;
-};
+ tnl_emit_func emit;
+ tnl_interp_func interp;
+ tnl_copy_pv_func copy_pv;
-/* These are used to make the ctx->Current values look like
- * arrays (with zero StrideB).
- */
-struct gl_fallback_arrays {
- struct gl_client_array Normal;
- struct gl_client_array Color;
- struct gl_client_array SecondaryColor;
- struct gl_client_array FogCoord;
- struct gl_client_array Index;
- struct gl_client_array TexCoord[MAX_TEXTURE_UNITS];
- struct gl_client_array EdgeFlag;
+ /* 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)( GLcontext *ctx );
};
+struct tnl_device_driver
+{
+ /***
+ *** TNL Pipeline
+ ***/
+
+ void (*RunPipeline)(GLcontext *ctx);
+ /* Replaces PipelineStart/PipelineFinish -- intended to allow
+ * drivers to wrap _tnl_run_pipeline() with code to validate state
+ * and grab/release hardware locks.
+ */
-typedef void (*texgen_func)( struct vertex_buffer *VB,
- GLuint textureSet);
+ void (*NotifyMaterialChange)(GLcontext *ctx);
+ /* Alert tnl-aware drivers of changes to material.
+ */
+ void (*NotifyInputChanges)(GLcontext *ctx, GLuint bitmask);
+ /* Alert tnl-aware drivers of changes to size and stride of input
+ * arrays.
+ */
+ /***
+ *** Rendering -- These functions called only from t_vb_render.c
+ ***/
+ struct
+ {
+ void (*Start)(GLcontext *ctx);
+ void (*Finish)(GLcontext *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)(GLcontext *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)( GLcontext *ctx, const GLuint *elts, GLuint n );
+ /* Render a polygon with <n> vertices whose indexes are in the <elts>
+ * array.
+ */
+
+ void (*ClippedLine)( GLcontext *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)( GLcontext *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)( GLcontext *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;
+};
-typedef struct tnl_context {
- GLuint _ArrayFlag[VB_SIZE]; /* crock */
- GLuint _ArrayFlags;
- GLuint _ArraySummary; /* Like flags, but no size information */
- GLuint _ArrayNewState; /* Tracks which arrays have been changed. */
- GLuint _ArrayTex3Flag;
- GLuint _ArrayTex4Flag;
+#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
- /* Pipeline stages - shared between the two pipelines,
- * which live in CVA.
+/**
+ * Context state for T&L context.
+ */
+typedef struct
+{
+ /* Driver interface.
*/
- struct gl_pipeline_stage PipelineStage[MAX_PIPELINE_STAGES];
- GLuint NrPipelineStages;
+ struct tnl_device_driver Driver;
- /* Per-texunit derived state.
+ /* Pipeline
*/
- GLuint _TexgenSize[MAX_TEXTURE_UNITS];
- GLuint _TexgenHoles[MAX_TEXTURE_UNITS];
- texgen_func *_TexgenFunc[MAX_TEXTURE_UNITS];
+ struct tnl_pipeline pipeline;
+ struct vertex_buffer vb;
-
- /* Display list extensions
+ /* Clipspace/ndc/window vertex managment:
*/
- GLuint opcode_vertex_cassette;
+ struct tnl_clipspace clipspace;
- /* Cva
+ /* Probably need a better configuration mechanism:
*/
- struct gl_cva CVA;
- GLboolean CompileCVAFlag;
-
- clip_poly_func *_poly_clip_tab;
- clip_line_func *_line_clip_tab;
- clip_interp_func _ClipInterpFunc; /* Clip interpolation function */
- normal_func *_NormalTransform;
- shade_func *_shade_func_tab; /* Current shading function table */
-
- GLenum _CurrentPrimitive; /* Prim or GL_POLYGON+1 */
- GLuint _CurrentTex3Flag;
- GLuint _CurrentTex4Flag;
+ GLboolean NeedNdcCoords;
+ GLboolean AllowVertexFog;
+ GLboolean AllowPixelFog;
+ GLboolean _DoVertexFog; /* eval fog function at each vertex? */
- GLboolean _ReplayHardBeginEnd; /* Display list execution of rect, etc */
+ DECLARE_RENDERINPUTS(render_inputs_bitset);
- GLuint _RenderFlags; /* Active inputs to render stage */
+ GLvector4f tmp_inputs[VERT_ATTRIB_MAX];
- /* Cache of unused immediate structs */
- struct immediate *freed_im_queue;
- GLuint nr_im_queued;
-
- struct gl_fallback_arrays Fallback;
-
- GLvertexformat vtxfmt;
+ /* Temp storage for t_draw.c:
+ */
+ GLubyte *block[VERT_ATTRIB_MAX];
+ GLuint nr_blocks;
} TNLcontext;
-#define TNL_CONTEXT(ctx) ((TNLcontext *)(ctx->swtnl_context))
-#define TNL_CURRENT_IM(ctx) ((struct immediate *)(ctx->swtnl_im))
-#define TNL_VB(ctx) ((struct vertex_buffer *)(ctx->swtnl_vb))
+#define TNL_CONTEXT(ctx) ((TNLcontext *)((ctx)->swtnl_context))
-extern GLboolean _tnl_flush_vertices( GLcontext *ctx, GLuint flush_flags );
-
-extern void
-_tnl_MakeCurrent( GLcontext *ctx,
- GLframebuffer *drawBuffer,
- GLframebuffer *readBuffer );
+#define TYPE_IDX(t) ((t) & 0xf)
+#define MAX_TYPES TYPE_IDX(GL_DOUBLE)+1 /* 0xa + 1 */
extern void
-_tnl_LightingSpaceChange( GLcontext *ctx );
+tnl_clip_prepare(GLcontext *ctx);
-/*
- * Macros for fetching current input buffer.
- */
-#ifdef THREADS
-#define GET_IMMEDIATE struct immediate *IM = TNL_CURRENT_IM(((GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())))
-#define SET_IMMEDIATE(ctx, im) ctx->swtnl_im = (void *)im
-#else
-extern struct immediate *_tnl_CurrentInput;
-#define GET_IMMEDIATE struct immediate *IM = _tnl_CurrentInput
-#define SET_IMMEDIATE(ctx, im) \
-do { \
- ctx->swtnl_im = (void *)im; \
- _tnl_CurrentInput = im; \
-} while (0)
-#endif
#endif
projects / mesa.git / blobdiff