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 #define VBO_MAX_PRIM 64
  43
  44 /* Wierd implementation stuff:
  45  */
  46 #define VBO_VERT_BUFFER_SIZE (1024*64)  /* bytes */
  47 #define VBO_MAX_ATTR_CODEGEN 16
  48 #define ERROR_ATTRIB 16
  49
  50
  51 /** Current vertex program mode */
  52 enum vp_mode {
  53    VP_NONE,   /**< fixed function */
  54    VP_NV,     /**< NV vertex program */
  55    VP_ARB     /**< ARB vertex program or GLSL vertex shader */
  56 };
  57
  58
  59 struct vbo_exec_eval1_map {
  60    struct gl_1d_map *map;
  61    GLuint sz;
  62 };
  63
  64 struct vbo_exec_eval2_map {
  65    struct gl_2d_map *map;
  66    GLuint sz;
  67 };
  68
  69
  70
  71 struct vbo_exec_copied_vtx {
  72    GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  73    GLuint nr;
  74 };
  75
  76
  77 typedef void (*vbo_attrfv_func)( const GLfloat * );
  78
  79
  80 struct vbo_exec_context
  81 {
  82    GLcontext *ctx;
  83    GLvertexformat vtxfmt;
  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       GLubyte active_sz[VBO_ATTRIB_MAX];
 104
 105       GLfloat *attrptr[VBO_ATTRIB_MAX];
 106       struct gl_client_array arrays[VBO_ATTRIB_MAX];
 107
 108       /* According to program mode, the values above plus current
 109        * values are squashed down to the 32 attributes passed to the
 110        * vertex program below:
 111        */
 112       enum vp_mode program_mode;
 113       GLuint enabled_flags;
 114       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 115    } vtx;
 116
 117
 118    struct {
 119       GLboolean recalculate_maps;
 120       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 121       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 122    } eval;
 123
 124    struct {
 125       enum vp_mode program_mode;
 126       GLuint enabled_flags;
 127       GLuint array_obj;
 128
 129       /* These just mirror the current arrayobj (todo: make arrayobj
 130        * look like this and remove the mirror):
 131        */
 132       const struct gl_client_array *legacy_array[16];
 133       const struct gl_client_array *generic_array[16];
 134
 135       /* Arrays and current values manipulated according to program
 136        * mode, etc.  These are the attributes as seen by vertex
 137        * programs:
 138        */
 139       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 140    } array;
 141 };
 142
 143
 144
 145 /* External API:
 146  */
 147 void vbo_exec_init( GLcontext *ctx );
 148 void vbo_exec_destroy( GLcontext *ctx );
 149 void vbo_exec_invalidate_state( GLcontext *ctx, GLuint new_state );
 150 void vbo_exec_FlushVertices_internal( GLcontext *ctx, GLboolean unmap );
 151
 152 void vbo_exec_BeginVertices( GLcontext *ctx );
 153 void vbo_exec_FlushVertices( GLcontext *ctx, GLuint flags );
 154
 155
 156 /* Internal functions:
 157  */
 158 void vbo_exec_array_init( struct vbo_exec_context *exec );
 159 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
 160
 161
 162 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 163 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 164 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 165 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 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 extern GLboolean
 177 vbo_validate_shaders(GLcontext *ctx);
 178
 179 #endif