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 typedef void (*vbo_attrfv_func)( const GLfloat * );
  82
  83
  84 struct vbo_exec_context
  85 {
  86    struct gl_context *ctx;
  87    GLvertexformat vtxfmt;
  88
  89    struct {
  90       struct gl_buffer_object *bufferobj;
  91
  92       GLuint vertex_size;       /* in dwords */
  93
  94       struct _mesa_prim prim[VBO_MAX_PRIM];
  95       GLuint prim_count;
  96
  97       GLfloat *buffer_map;
  98       GLfloat *buffer_ptr;              /* cursor, points into buffer */
  99       GLuint   buffer_used;             /* in bytes */
 100       GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
 101
 102       GLuint vert_count;
 103       GLuint max_vert;
 104       struct vbo_exec_copied_vtx copied;
 105
 106       GLubyte attrsz[VBO_ATTRIB_MAX];
 107       GLubyte active_sz[VBO_ATTRIB_MAX];
 108
 109       GLfloat *attrptr[VBO_ATTRIB_MAX];
 110       struct gl_client_array arrays[VERT_ATTRIB_MAX];
 111
 112       /* According to program mode, the values above plus current
 113        * values are squashed down to the 32 attributes passed to the
 114        * vertex program below:
 115        */
 116       enum vp_mode program_mode;
 117       GLuint enabled_flags;
 118       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 119    } vtx;
 120
 121
 122    struct {
 123       GLboolean recalculate_maps;
 124       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 125       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 126    } eval;
 127
 128    struct {
 129       enum vp_mode program_mode;
 130       GLuint enabled_flags;
 131       GLuint array_obj;
 132
 133       /* These just mirror the current arrayobj (todo: make arrayobj
 134        * look like this and remove the mirror):
 135        */
 136       const struct gl_client_array *legacy_array[16];
 137       const struct gl_client_array *generic_array[16];
 138
 139       /* Arrays and current values manipulated according to program
 140        * mode, etc.  These are the attributes as seen by vertex
 141        * programs:
 142        */
 143       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 144    } array;
 145
 146 #ifdef DEBUG
 147    GLint flush_call_depth;
 148 #endif
 149 };
 150
 151
 152
 153 /* External API:
 154  */
 155 void vbo_exec_init( struct gl_context *ctx );
 156 void vbo_exec_destroy( struct gl_context *ctx );
 157 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
 158
 159 void vbo_exec_BeginVertices( struct gl_context *ctx );
 160 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
 161
 162
 163 /* Internal functions:
 164  */
 165 void vbo_exec_array_init( struct vbo_exec_context *exec );
 166 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
 167
 168
 169 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 170 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 171
 172 #if FEATURE_beginend
 173
 174 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 175 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 176
 177 #else /* FEATURE_beginend */
 178
 179 static INLINE void
 180 vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
 181 {
 182 }
 183
 184 static INLINE void
 185 vbo_exec_vtx_map( struct vbo_exec_context *exec )
 186 {
 187 }
 188
 189 #endif /* FEATURE_beginend */
 190
 191 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 192
 193 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 194
 195 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 196                                      GLfloat u, GLfloat v );
 197
 198 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 199                                      GLfloat u);
 200
 201 #endif