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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/tnl/t_context.h')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/tnl/t_context.h | 806 |
1 files changed, 0 insertions, 806 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/tnl/t_context.h b/nx-X11/extras/Mesa/src/mesa/tnl/t_context.h deleted file mode 100644 index 9c8f2003b..000000000 --- a/nx-X11/extras/Mesa/src/mesa/tnl/t_context.h +++ /dev/null @@ -1,806 +0,0 @@ -/* - * mesa 3-D graphics library - * Version: 6.3 - * - * Copyright (C) 1999-2005 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. - * - * The initial vertex_buffer data may either come from an ::immediate - * structure or client vertex_arrays or display lists: - * - * - * - The ::immediate structure records all the GL commands issued between - * glBegin and glEnd. \n - * The structure accumulates data, until it is either full or it is - * flushed (usually by a state change). Before starting then the pipeline, - * the collected vertex data in ::immediate has to be pushed into - * TNLcontext::vb. - * This happens in ::_tnl_vb_bind_immediate. The pipeline is then run by - * calling tnl_device_driver::RunPipeline = ::_tnl_run_pipeline, which - * is stored in TNLcontext::Driver. \n - * An ::immediate does (for performance reasons) usually not finish with a - * glEnd, and hence it also does not need to start with a glBegin. - * This means that the last vertices of one ::immediate may need to be - * saved for the next one. - * - * - * - NOT SURE ABOUT THIS: The vertex_arrays structure is used to handle - * glDrawArrays etc. \n - * Here, the data of the vertex_arrays is copied by ::_tnl_vb_bind_arrays - * into TNLcontext::vb, so that the pipeline can be started. - */ - - -#ifndef _T_CONTEXT_H -#define _T_CONTEXT_H - -#include "glheader.h" -#include "mtypes.h" - -#include "math/m_matrix.h" -#include "math/m_vector.h" -#include "math/m_xform.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. - */ -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_SIX = 6, - _TNL_ATTRIB_SEVEN = 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_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, - _TNL_ATTRIB_INDEX = 28, - _TNL_ATTRIB_EDGEFLAG = 29, - _TNL_ATTRIB_POINTSIZE = 30, - _TNL_ATTRIB_MAX = 31 -} ; - -/* Will probably have to revise this scheme fairly shortly, eg. by - * compacting all the MAT flags down to one bit, or by using two - * dwords to store the flags. - */ -#define _TNL_BIT_POS (1<<0) -#define _TNL_BIT_WEIGHT (1<<1) -#define _TNL_BIT_NORMAL (1<<2) -#define _TNL_BIT_COLOR0 (1<<3) -#define _TNL_BIT_COLOR1 (1<<4) -#define _TNL_BIT_FOG (1<<5) -#define _TNL_BIT_SIX (1<<6) -#define _TNL_BIT_SEVEN (1<<7) -#define _TNL_BIT_TEX0 (1<<8) -#define _TNL_BIT_TEX1 (1<<9) -#define _TNL_BIT_TEX2 (1<<10) -#define _TNL_BIT_TEX3 (1<<11) -#define _TNL_BIT_TEX4 (1<<12) -#define _TNL_BIT_TEX5 (1<<13) -#define _TNL_BIT_TEX6 (1<<14) -#define _TNL_BIT_TEX7 (1<<15) -#define _TNL_BIT_MAT_FRONT_AMBIENT (1<<16) -#define _TNL_BIT_MAT_BACK_AMBIENT (1<<17) -#define _TNL_BIT_MAT_FRONT_DIFFUSE (1<<18) -#define _TNL_BIT_MAT_BACK_DIFFUSE (1<<19) -#define _TNL_BIT_MAT_FRONT_SPECULAR (1<<20) -#define _TNL_BIT_MAT_BACK_SPECULAR (1<<21) -#define _TNL_BIT_MAT_FRONT_EMISSION (1<<22) -#define _TNL_BIT_MAT_BACK_EMISSION (1<<23) -#define _TNL_BIT_MAT_FRONT_SHININESS (1<<24) -#define _TNL_BIT_MAT_BACK_SHININESS (1<<25) -#define _TNL_BIT_MAT_FRONT_INDEXES (1<<26) -#define _TNL_BIT_MAT_BACK_INDEXES (1<<27) -#define _TNL_BIT_INDEX (1<<28) -#define _TNL_BIT_EDGEFLAG (1<<29) -#define _TNL_BIT_POINTSIZE (1<<30) - -#define _TNL_BIT_TEX(u) (1 << (_TNL_ATTRIB_TEX0 + (u))) - - - -#define _TNL_BITS_MAT_ANY (_TNL_BIT_MAT_FRONT_AMBIENT | \ - _TNL_BIT_MAT_BACK_AMBIENT | \ - _TNL_BIT_MAT_FRONT_DIFFUSE | \ - _TNL_BIT_MAT_BACK_DIFFUSE | \ - _TNL_BIT_MAT_FRONT_SPECULAR | \ - _TNL_BIT_MAT_BACK_SPECULAR | \ - _TNL_BIT_MAT_FRONT_EMISSION | \ - _TNL_BIT_MAT_BACK_EMISSION | \ - _TNL_BIT_MAT_FRONT_SHININESS | \ - _TNL_BIT_MAT_BACK_SHININESS | \ - _TNL_BIT_MAT_FRONT_INDEXES | \ - _TNL_BIT_MAT_BACK_INDEXES) - - -#define _TNL_BITS_TEX_ANY (_TNL_BIT_TEX0 | \ - _TNL_BIT_TEX1 | \ - _TNL_BIT_TEX2 | \ - _TNL_BIT_TEX3 | \ - _TNL_BIT_TEX4 | \ - _TNL_BIT_TEX5 | \ - _TNL_BIT_TEX6 | \ - _TNL_BIT_TEX7) - - -#define _TNL_BITS_PROG_ANY (_TNL_BIT_POS | \ - _TNL_BIT_WEIGHT | \ - _TNL_BIT_NORMAL | \ - _TNL_BIT_COLOR0 | \ - _TNL_BIT_COLOR1 | \ - _TNL_BIT_FOG | \ - _TNL_BIT_SIX | \ - _TNL_BIT_SEVEN | \ - _TNL_BITS_TEX_ANY) - - - -#define PRIM_BEGIN 0x10 -#define PRIM_END 0x20 -#define PRIM_WEAK 0x40 -#define PRIM_MODE_MASK 0x0f - -/* - */ -struct tnl_prim { - GLuint mode; - GLuint start; - GLuint count; -}; - - - -struct tnl_eval1_map { - struct gl_1d_map *map; - GLuint sz; -}; - -struct tnl_eval2_map { - struct gl_2d_map *map; - GLuint sz; -}; - -struct tnl_eval { - GLuint new_state; - struct tnl_eval1_map map1[_TNL_ATTRIB_INDEX + 1]; - struct tnl_eval2_map map2[_TNL_ATTRIB_INDEX + 1]; -}; - - -#define TNL_MAX_PRIM 16 -#define TNL_MAX_COPIED_VERTS 3 - -struct tnl_copied_vtx { - GLfloat buffer[_TNL_ATTRIB_MAX * 4 * TNL_MAX_COPIED_VERTS]; - GLuint nr; -}; - -#define VERT_BUFFER_SIZE 2048 /* 8kbytes */ - - -typedef void (*tnl_attrfv_func)( const GLfloat * ); - -struct _tnl_dynfn { - struct _tnl_dynfn *next, *prev; - GLuint key; - char *code; -}; - -struct _tnl_dynfn_lists { - struct _tnl_dynfn Vertex[4]; - struct _tnl_dynfn Attribute[4]; -}; - -struct _tnl_dynfn_generators { - struct _tnl_dynfn *(*Vertex[4])( GLcontext *ctx, int key ); - struct _tnl_dynfn *(*Attribute[4])( GLcontext *ctx, int key ); -}; - -#define _TNL_MAX_ATTR_CODEGEN 16 - - -/* The assembly of vertices in immediate mode is separated from - * display list compilation. This allows a simpler immediate mode - * treatment and a display list compiler better suited to - * hardware-acceleration. - */ -struct tnl_vtx { - GLfloat buffer[VERT_BUFFER_SIZE]; - GLubyte attrsz[_TNL_ATTRIB_MAX]; - GLuint vertex_size; - struct tnl_prim prim[TNL_MAX_PRIM]; - GLuint prim_count; - GLfloat *vbptr; /* cursor, points into buffer */ - GLfloat vertex[_TNL_ATTRIB_MAX*4]; /* current vertex */ - GLfloat *attrptr[_TNL_ATTRIB_MAX]; /* points into vertex */ - GLfloat *current[_TNL_ATTRIB_MAX]; /* points into ctx->Current, etc */ - GLfloat CurrentFloatEdgeFlag; - GLuint counter, initial_counter; - struct tnl_copied_vtx copied; - - tnl_attrfv_func tabfv[_TNL_MAX_ATTR_CODEGEN+1][4]; /* plus 1 for ERROR_ATTRIB */ - - struct _tnl_dynfn_lists cache; - struct _tnl_dynfn_generators gen; - - struct tnl_eval eval; - GLboolean *edgeflag_tmp; - GLboolean have_materials; -}; - - - - -/* For display lists, this structure holds a run of vertices of the - * same format, and a strictly well-formed set of begin/end pairs, - * starting on the first vertex and ending at the last. Vertex - * copying on buffer breaks is precomputed according to these - * primitives, though there are situations where the copying will need - * correction at execute-time, perhaps by replaying the list as - * immediate mode commands. - * - * On executing this list, the 'current' values may be updated with - * the values of the final vertex, and often no fixup of the start of - * the vertex list is required. - * - * Eval and other commands that don't fit into these vertex lists are - * compiled using the fallback opcode mechanism provided by dlist.c. - */ -struct tnl_vertex_list { - GLubyte attrsz[_TNL_ATTRIB_MAX]; - GLuint vertex_size; - - GLfloat *buffer; - GLuint count; - GLuint wrap_count; /* number of copied vertices at start */ - GLboolean have_materials; /* bit of a hack - quick check for materials */ - GLboolean dangling_attr_ref; /* current attr implicitly referenced - outside the list */ - - GLfloat *normal_lengths; - struct tnl_prim *prim; - GLuint prim_count; - - struct tnl_vertex_store *vertex_store; - struct tnl_primitive_store *prim_store; -}; - -/* These buffers should be a reasonable size to support upload to - * hardware? Maybe drivers should stitch them back together, or - * specify a desired size? - */ -#define SAVE_BUFFER_SIZE (16*1024) -#define SAVE_PRIM_SIZE 128 - -/* Storage to be shared among several vertex_lists. - */ -struct tnl_vertex_store { - GLfloat buffer[SAVE_BUFFER_SIZE]; - GLuint used; - GLuint refcount; -}; - -struct tnl_primitive_store { - struct tnl_prim buffer[SAVE_PRIM_SIZE]; - GLuint used; - GLuint refcount; -}; - - -struct tnl_save { - GLubyte attrsz[_TNL_ATTRIB_MAX]; - GLuint vertex_size; - - GLfloat *buffer; - GLuint count; - GLuint wrap_count; - GLuint replay_flags; - - struct tnl_prim *prim; - GLuint prim_count, prim_max; - - struct tnl_vertex_store *vertex_store; - struct tnl_primitive_store *prim_store; - - GLfloat *vbptr; /* cursor, points into buffer */ - GLfloat vertex[_TNL_ATTRIB_MAX*4]; /* current values */ - GLfloat *attrptr[_TNL_ATTRIB_MAX]; - GLuint counter, initial_counter; - GLboolean dangling_attr_ref; - GLboolean have_materials; - - GLuint opcode_vertex_list; - - struct tnl_copied_vtx copied; - - GLfloat CurrentFloatEdgeFlag; - - GLfloat *current[_TNL_ATTRIB_MAX]; /* points into ctx->ListState */ - GLubyte *currentsz[_TNL_ATTRIB_MAX]; - - void (*tabfv[_TNL_ATTRIB_MAX][4])( const GLfloat * ); -}; - - -struct tnl_vertex_arrays -{ - /* Conventional vertex attribute arrays */ - GLvector4f Obj; - GLvector4f Normal; - GLvector4f Color; - GLvector4f SecondaryColor; - GLvector4f FogCoord; - GLvector4f TexCoord[MAX_TEXTURE_COORD_UNITS]; - GLvector4f Index; - - GLubyte *EdgeFlag; - GLuint *Elt; - - /* These attributes don't alias with the conventional attributes. - * The GL_NV_vertex_program extension defines 16 extra sets of vertex - * arrays which have precedent over the conventional arrays when enabled. - */ - GLvector4f Attribs[_TNL_ATTRIB_MAX]; -}; - - -/** - * Contains the current state of a running pipeline. - */ -struct vertex_buffer -{ - /* Constant over life of the vertex_buffer. - */ - GLuint Size; - - /* Constant over the pipeline. - */ - GLuint Count; /* for everything except Elts */ - - /* Pointers to current data. - */ - GLuint *Elts; - GLvector4f *ObjPtr; /* _TNL_BIT_POS */ - 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 */ - 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 *PointSizePtr; /* _TNL_BIT_POS */ - GLvector4f *FogCoordPtr; /* _TNL_BIT_FOG */ - - struct tnl_prim *Primitive; - GLuint PrimitiveCount; - - /* Inputs to the vertex program stage */ - GLvector4f *AttribPtr[_TNL_ATTRIB_MAX]; /* GL_NV_vertex_program */ - - GLuint LastClipped; - /* Private data from _tnl_render_stage that has no business being - * in this struct. - */ -}; - - -/** 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)( GLcontext *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)( 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 - */ - GLboolean (*run)( GLcontext *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)( GLcontext *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)( 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); - - -struct tnl_clipspace_fastpath { - GLuint vertex_size; - GLuint attr_count; - GLboolean match_strides; - - struct { - GLuint format; - GLuint size; - GLuint stride; - GLuint offset; - } *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)( GLcontext *ctx ); -}; - - - -struct tnl_cache { - GLuint hash; - void *key; - void *data; - struct tnl_cache *next; -}; - - -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. - */ - - void (*NotifyMaterialChange)(GLcontext *ctx); - /* Alert tnl-aware drivers of changes to material. - */ - - GLboolean (*NotifyBegin)(GLcontext *ctx, GLenum p); - /* Allow drivers to hook in optimized begin/end engines. - * Return value: GL_TRUE - driver handled the begin - * GL_FALSE - driver didn't handle the begin - */ - - /*** - *** 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; -}; - - -/** - * Context state for T&L context. - */ -typedef struct -{ - /* Driver interface. - */ - struct tnl_device_driver Driver; - - /* Execute: - */ - struct tnl_vtx vtx; - - /* Compile: - */ - struct tnl_save save; - - /* Pipeline - */ - struct tnl_pipeline pipeline; - struct vertex_buffer vb; - - /* GLvectors for binding to vb: - */ - struct tnl_vertex_arrays vtx_inputs; - struct tnl_vertex_arrays save_inputs; - struct tnl_vertex_arrays current; - struct tnl_vertex_arrays array_inputs; - - /* Clipspace/ndc/window vertex managment: - */ - struct tnl_clipspace clipspace; - - /* Probably need a better configuration mechanism: - */ - GLboolean NeedNdcCoords; - GLboolean LoopbackDListCassettes; - GLboolean CalcDListNormalLengths; - GLboolean IsolateMaterials; - GLboolean AllowVertexFog; - GLboolean AllowPixelFog; - GLboolean AllowCodegen; - - GLboolean _DoVertexFog; /* eval fog function at each vertex? */ - - /* If True, it means we started a glBegin/End primtive with an invalid - * vertex/fragment program or incomplete framebuffer. In that case, - * discard any buffered vertex data. - */ - GLboolean DiscardPrimitive; - - GLuint render_inputs; - - GLvertexformat exec_vtxfmt; - GLvertexformat save_vtxfmt; - - struct tnl_cache *vp_cache; - -} 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_MakeCurrent( GLcontext *ctx, - GLframebuffer *drawBuffer, - GLframebuffer *readBuffer ); - - - - -#endif |