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.h"
  39 #include "vbo_attrib.h"
  40
  41
  42 #define VBO_MAX_PRIM 64
  43
  44 /* Wierd implementation stuff:
  45  */
  46 #define VBO_VERT_BUFFER_SIZE (1024*16)  /* dwords == 64k */
  47 #define VBO_MAX_ATTR_CODEGEN 16
  48 #define ERROR_ATTRIB 16
  49
  50
  51
  52
  53 struct vbo_exec_eval1_map {
  54    struct gl_1d_map *map;
  55    GLuint sz;
  56 };
  57
  58 struct vbo_exec_eval2_map {
  59    struct gl_2d_map *map;
  60    GLuint sz;
  61 };
  62
  63
  64
  65 struct vbo_exec_copied_vtx {
  66    GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  67    GLuint nr;
  68 };
  69
  70
  71 typedef void (*vbo_attrfv_func)( const GLfloat * );
  72
  73
  74 struct vbo_exec_context
  75 {
  76    GLcontext *ctx;
  77    GLvertexformat vtxfmt;
  78
  79    struct {
  80       struct gl_buffer_object *bufferobj;
  81       GLubyte *buffer_map;
  82
  83       GLuint vertex_size;
  84
  85       struct _mesa_prim prim[VBO_MAX_PRIM];
  86       GLuint prim_count;
  87
  88       GLfloat *vbptr;                /* cursor, points into buffer */
  89       GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  90
  91       GLuint vert_count;
  92       GLuint max_vert;
  93       struct vbo_exec_copied_vtx copied;
  94
  95       GLubyte attrsz[VBO_ATTRIB_MAX];
  96       GLubyte active_sz[VBO_ATTRIB_MAX];
  97
  98       GLfloat *attrptr[VBO_ATTRIB_MAX];
  99       struct gl_client_array arrays[VBO_ATTRIB_MAX];
 100
 101       /* According to program mode, the values above plus current
 102        * values are squashed down to the 32 attributes passed to the
 103        * vertex program below:
 104        */
 105       GLuint program_mode;
 106       GLuint enabled_flags;
 107       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 108    } vtx;
 109
 110
 111    struct {
 112       GLboolean recalculate_maps;
 113       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 114       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 115    } eval;
 116
 117    struct {
 118       GLuint program_mode;
 119       GLuint enabled_flags;
 120       GLuint array_obj;
 121
 122       /* These just mirror the current arrayobj (todo: make arrayobj
 123        * look like this and remove the mirror):
 124        */
 125       const struct gl_client_array *legacy_array[16];
 126       const struct gl_client_array *generic_array[16];
 127
 128       /* Arrays and current values manipulated according to program
 129        * mode, etc.  These are the attributes as seen by vertex
 130        * programs:
 131        */
 132       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 133    } array;
 134 };
 135
 136
 137
 138 /* External API:
 139  */
 140 void vbo_exec_init( GLcontext *ctx );
 141 void vbo_exec_destroy( GLcontext *ctx );
 142 void vbo_exec_invalidate_state( GLcontext *ctx, GLuint new_state );
 143 void vbo_exec_FlushVertices( GLcontext *ctx, GLuint flags );
 144
 145
 146 /* Internal functions:
 147  */
 148 void vbo_exec_array_init( struct vbo_exec_context *exec );
 149 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
 150
 151
 152 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 153 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 154 void vbo_exec_vtx_flush( struct vbo_exec_context *exec );
 155 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 156
 157 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 158
 159 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 160                                      GLfloat u, GLfloat v );
 161
 162 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 163                                      GLfloat u);
 164
 165 #endif