src/mesa/vbo/vbo_exec.h

   1 /**************************************************************************
   2
   3 Copyright 2002 Tungsten Graphics Inc., Cedar Park, Texas.
   4
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Keith Whitwell <keith@tungstengraphics.com>
  31  *
  32  */
  33
  34 #ifndef __VBO_EXEC_H__
  35 #define __VBO_EXEC_H__
  36
  37 #include "mtypes.h"
  38 #include "vbo_attrib.h"
  39
  40
  41 #define VBO_MAX_PRIM 64
  42
  43 /* Wierd implementation stuff:
  44  */
  45 #define VBO_VERT_BUFFER_SIZE (1024*16)  /* dwords == 64k */
  46 #define VBO_MAX_ATTR_CODEGEN 16
  47 #define ERROR_ATTRIB 16
  48
  49
  50
  51
  52 struct vbo_exec_eval1_map {
  53    struct gl_1d_map *map;
  54    GLuint sz;
  55 };
  56
  57 struct vbo_exec_eval2_map {
  58    struct gl_2d_map *map;
  59    GLuint sz;
  60 };
  61
  62
  63
  64 struct vbo_exec_copied_vtx {
  65    GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  66    GLuint nr;
  67 };
  68
  69
  70 typedef void (*vbo_attrfv_func)( const GLfloat * );
  71
  72
  73 struct vbo_exec_context
  74 {
  75    GLcontext *ctx;
  76    GLvertexformat vtxfmt;
  77
  78    struct {
  79       struct gl_buffer_object *bufferobj;
  80       GLubyte *buffer_map;
  81
  82       GLuint vertex_size;
  83
  84       struct _mesa_prim prim[VBO_MAX_PRIM];
  85       GLuint prim_count;
  86
  87       GLfloat *vbptr;                /* cursor, points into buffer */
  88       GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  89
  90       GLfloat *current[VBO_ATTRIB_MAX]; /* points into ctx->Current, ctx->Light.Material */
  91       GLfloat CurrentFloatEdgeFlag;
  92
  93       GLuint vert_count;
  94       GLuint max_vert;
  95       struct vbo_exec_copied_vtx copied;
  96
  97       GLubyte attrsz[VBO_ATTRIB_MAX];
  98       GLubyte active_sz[VBO_ATTRIB_MAX];
  99
 100       GLfloat *attrptr[VBO_ATTRIB_MAX];
 101       struct gl_client_array arrays[VBO_ATTRIB_MAX];
 102
 103       /* According to program mode, the values above plus current
 104        * values are squashed down to the 32 attributes passed to the
 105        * vertex program below:
 106        */
 107       GLuint program_mode;
 108       GLuint enabled_flags;
 109       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 110    } vtx;
 111
 112
 113    struct {
 114       GLboolean recalculate_maps;
 115       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 116       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 117    } eval;
 118
 119    struct {
 120       GLuint program_mode;
 121       GLuint enabled_flags;
 122       GLuint array_obj;
 123
 124       /* These just mirror the current arrayobj (todo: make arrayobj
 125        * look like this and remove the mirror):
 126        */
 127       const struct gl_client_array *legacy_array[16];
 128       const struct gl_client_array *generic_array[16];
 129
 130       /* Arrays and current values manipulated according to program
 131        * mode, etc.  These are the attributes as seen by vertex
 132        * programs:
 133        */
 134       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 135
 136
 137       struct gl_buffer_object *index_obj;
 138    } array;
 139 };
 140
 141
 142
 143 /* External API:
 144  */
 145 void vbo_exec_init( GLcontext *ctx );
 146 void vbo_exec_destroy( GLcontext *ctx );
 147 void vbo_exec_invalidate_state( GLcontext *ctx, GLuint new_state );
 148 void vbo_exec_FlushVertices( GLcontext *ctx, GLuint flags );
 149 void vbo_exec_wakeup( GLcontext *ctx );
 150
 151
 152 /* Internal functions:
 153  */
 154 void vbo_exec_array_init( struct vbo_exec_context *exec );
 155 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
 156
 157
 158 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 159 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 160 void vbo_exec_vtx_flush( struct vbo_exec_context *exec );
 161 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 162
 163 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 164
 165 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 166                                      GLfloat u, GLfloat v );
 167
 168 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 169                                      GLfloat u);
 170
 171 #endif