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/mfeatures.h"
  38 #include "main/mtypes.h"
  39 #include "vbo.h"
  40 #include "vbo_attrib.h"
  41
  42
  43 /**
  44  * Max number of primitives (number of glBegin/End pairs) per VBO.
  45  */
  46 #define VBO_MAX_PRIM 64
  47
  48
  49 /**
  50  * Size of the VBO to use for glBegin/glVertex/glEnd-style rendering.
  51  */
  52 #define VBO_VERT_BUFFER_SIZE (1024*64)  /* bytes */
  53
  54
  55 /** Current vertex program mode */
  56 enum vp_mode {
  57    VP_NONE,   /**< fixed function */
  58    VP_NV,     /**< NV vertex program */
  59    VP_ARB     /**< ARB vertex program or GLSL vertex shader */
  60 };
  61
  62
  63 struct vbo_exec_eval1_map {
  64    struct gl_1d_map *map;
  65    GLuint sz;
  66 };
  67
  68 struct vbo_exec_eval2_map {
  69    struct gl_2d_map *map;
  70    GLuint sz;
  71 };
  72
  73
  74
  75 struct vbo_exec_copied_vtx {
  76    GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  77    GLuint nr;
  78 };
  79
  80
  81 struct vbo_exec_context
  82 {
  83    struct gl_context *ctx;
  84    GLvertexformat vtxfmt;
  85
  86    struct {
  87       struct gl_buffer_object *bufferobj;
  88
  89       GLuint vertex_size;       /* in dwords */
  90
  91       struct _mesa_prim prim[VBO_MAX_PRIM];
  92       GLuint prim_count;
  93
  94       GLfloat *buffer_map;
  95       GLfloat *buffer_ptr;              /* cursor, points into buffer */
  96       GLuint   buffer_used;             /* in bytes */
  97       GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  98
  99       GLuint vert_count;
 100       GLuint max_vert;
 101       struct vbo_exec_copied_vtx copied;
 102
 103       GLubyte attrsz[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       /* 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    } array;
 136
 137    /* Which flags to set in vbo_exec_BeginVertices() */
 138    GLbitfield begin_vertices_flags;
 139
 140 #ifdef DEBUG
 141    GLint flush_call_depth;
 142 #endif
 143 };
 144
 145
 146
 147 /* External API:
 148  */
 149 void vbo_exec_init( struct gl_context *ctx );
 150 void vbo_exec_destroy( struct gl_context *ctx );
 151 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
 152
 153 void vbo_exec_BeginVertices( struct gl_context *ctx );
 154 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
 155
 156
 157 /* Internal functions:
 158  */
 159 void vbo_exec_array_init( struct vbo_exec_context *exec );
 160 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
 161
 162
 163 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 164 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 165
 166 #if FEATURE_beginend
 167
 168 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 169 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 170
 171 #else /* FEATURE_beginend */
 172
 173 static inline void
 174 vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
 175 {
 176 }
 177
 178 static inline void
 179 vbo_exec_vtx_map( struct vbo_exec_context *exec )
 180 {
 181 }
 182
 183 #endif /* FEATURE_beginend */
 184
 185 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 186
 187 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 188
 189 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 190                                      GLfloat u, GLfloat v );
 191
 192 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 193                                      GLfloat u);
 194
 195 #endif