/* * 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. * * 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. */ /* 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_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_GENERIC0 = 16, _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, _TNL_ATTRIB_MAT_FRONT_AMBIENT = 32, _TNL_ATTRIB_MAT_BACK_AMBIENT = 33, _TNL_ATTRIB_MAT_FRONT_DIFFUSE = 34, _TNL_ATTRIB_MAT_BACK_DIFFUSE = 35, _TNL_ATTRIB_MAT_FRONT_SPECULAR = 36, _TNL_ATTRIB_MAT_BACK_SPECULAR = 37, _TNL_ATTRIB_MAT_FRONT_EMISSION = 38, _TNL_ATTRIB_MAT_BACK_EMISSION = 39, _TNL_ATTRIB_MAT_FRONT_SHININESS = 40, _TNL_ATTRIB_MAT_BACK_SHININESS = 41, _TNL_ATTRIB_MAT_FRONT_INDEXES = 42, _TNL_ATTRIB_MAT_BACK_INDEXES = 43, _TNL_ATTRIB_EDGEFLAG = 44, _TNL_ATTRIB_POINTSIZE = 45, _TNL_ATTRIB_MAX = 46 } ; #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 #define _TNL_LAST_MAT _TNL_ATTRIB_MAT_BACK_INDEXES #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_EDGEFLAG + 1]; struct tnl_eval2_map map2[_TNL_ATTRIB_EDGEFLAG + 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 32 /** * 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; /** Note extra space for error handler: */ tnl_attrfv_func tabfv[_TNL_ATTRIB_ERROR+1][4]; 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 * ); }; /** * A collection of vertex arrays. */ 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. */ /* XXX I think the array size is wronge (47 vs. 16) */ GLvector4f Attribs[_TNL_ATTRIB_MAX]; }; /** * 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. * XXX some of these fields alias AttribPtr below and should be removed * such as NormalPtr, TexCoordPtr, FogCoordPtr, etc. */ 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 *FogCoordPtr; /* _TNL_BIT_FOG */ GLvector4f *VaryingPtr[MAX_VARYING_VECTORS]; struct tnl_prim *Primitive; GLuint PrimitiveCount; /* Inputs to the vertex program stage */ /* XXX This array may be too large (47 vs. 16) */ 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)( 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 attr_type { 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_item { GLuint hash; void *key; void *data; struct tnl_cache_item *next; }; struct tnl_cache { struct tnl_cache_item **items; GLuint size, n_items; }; 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. */ void (*NotifyInputChanges)(GLcontext *ctx, GLuint bitmask); /* Alert tnl-aware drivers of changes to size and stride of input * arrays. */ 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 vertices whose indexes are in the * 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; }; #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; /* 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; DECLARE_RENDERINPUTS(render_inputs_bitset); 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 */ #endif