src/mesa/vbo/vbo_exec.h

   1 /**************************************************************************
   2
   3 Copyright 2002 VMware, Inc.
   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 VMWARE 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 <keithw@vmware.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    GLboolean validating; /**< if we're in the middle of state validation */
  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       GLenum attrtype[VBO_ATTRIB_MAX];
 105       GLubyte active_sz[VBO_ATTRIB_MAX];
 106
 107       GLfloat *attrptr[VBO_ATTRIB_MAX];
 108       struct gl_client_array arrays[VERT_ATTRIB_MAX];
 109
 110       /* According to program mode, the values above plus current
 111        * values are squashed down to the 32 attributes passed to the
 112        * vertex program below:
 113        */
 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       /* Arrays and current values manipulated according to program
 126        * mode, etc.  These are the attributes as seen by vertex
 127        * programs:
 128        */
 129       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 130       GLboolean recalculate_inputs;
 131    } array;
 132
 133    /* Which flags to set in vbo_exec_BeginVertices() */
 134    GLbitfield begin_vertices_flags;
 135
 136 #ifdef DEBUG
 137    GLint flush_call_depth;
 138 #endif
 139 };
 140
 141
 142
 143 /* External API:
 144  */
 145 void vbo_exec_init( struct gl_context *ctx );
 146 void vbo_exec_destroy( struct gl_context *ctx );
 147 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
 148
 149 void vbo_exec_BeginVertices( struct gl_context *ctx );
 150 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
 151
 152
 153 /* Internal functions:
 154  */
 155
 156 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 157 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 158
 159
 160 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 161 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 162
 163
 164 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 165
 166 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 167
 168 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 169                                      GLfloat u, GLfloat v );
 170
 171 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 172                                      GLfloat u);
 173
 174 #endif