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 "main/mtypes.h"
  38 #include "vbo.h"
  39 #include "vbo_attrib.h"
  40
  41
  42 /**
  43  * Max number of primitives (number of glBegin/End pairs) per VBO.
  44  */
  45 #define VBO_MAX_PRIM 64
  46
  47
  48 /**
  49  * Size of the VBO to use for glBegin/glVertex/glEnd-style rendering.
  50  */
  51 #define VBO_VERT_BUFFER_SIZE (1024*64)  /* bytes */
  52
  53
  54 /** Current vertex program mode */
  55 enum vp_mode {
  56    VP_NONE,   /**< fixed function */
  57    VP_ARB     /**< ARB vertex program or GLSL vertex shader */
  58 };
  59
  60
  61 struct vbo_exec_eval1_map {
  62    struct gl_1d_map *map;
  63    GLuint sz;
  64 };
  65
  66 struct vbo_exec_eval2_map {
  67    struct gl_2d_map *map;
  68    GLuint sz;
  69 };
  70
  71
  72
  73 struct vbo_exec_copied_vtx {
  74    GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  75    GLuint nr;
  76 };
  77
  78
  79 struct vbo_exec_context
  80 {
  81    struct gl_context *ctx;
  82    GLvertexformat vtxfmt;
  83    GLvertexformat vtxfmt_noop;
  84
  85    struct {
  86       struct gl_buffer_object *bufferobj;
  87
  88       GLuint vertex_size;       /* in dwords */
  89
  90       struct _mesa_prim prim[VBO_MAX_PRIM];
  91       GLuint prim_count;
  92
  93       GLfloat *buffer_map;
  94       GLfloat *buffer_ptr;              /* cursor, points into buffer */
  95       GLuint   buffer_used;             /* in bytes */
  96       GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  97
  98       GLuint vert_count;
  99       GLuint max_vert;
 100       struct vbo_exec_copied_vtx copied;
 101
 102       GLubyte attrsz[VBO_ATTRIB_MAX];
 103       GLenum attrtype[VBO_ATTRIB_MAX];
 104       GLubyte active_sz[VBO_ATTRIB_MAX];
 105
 106       GLfloat *attrptr[VBO_ATTRIB_MAX];
 107       struct gl_client_array arrays[VERT_ATTRIB_MAX];
 108
 109       /* According to program mode, the values above plus current
 110        * values are squashed down to the 32 attributes passed to the
 111        * vertex program below:
 112        */
 113       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 114    } vtx;
 115
 116
 117    struct {
 118       GLboolean recalculate_maps;
 119       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 120       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 121    } eval;
 122
 123    struct {
 124       /* Arrays and current values manipulated according to program
 125        * mode, etc.  These are the attributes as seen by vertex
 126        * programs:
 127        */
 128       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 129       GLboolean recalculate_inputs;
 130    } array;
 131
 132    /* Which flags to set in vbo_exec_BeginVertices() */
 133    GLbitfield begin_vertices_flags;
 134
 135 #ifdef DEBUG
 136    GLint flush_call_depth;
 137 #endif
 138 };
 139
 140
 141
 142 /* External API:
 143  */
 144 void vbo_exec_init( struct gl_context *ctx );
 145 void vbo_exec_destroy( struct gl_context *ctx );
 146 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
 147
 148 void vbo_exec_BeginVertices( struct gl_context *ctx );
 149 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
 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
 161
 162 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 163 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 164
 165
 166 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 167
 168 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 169
 170 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 171                                      GLfloat u, GLfloat v );
 172
 173 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 174                                      GLfloat u);
 175
 176 #endif