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 #include "main/imports.h"
  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_ARB     /**< ARB vertex program or GLSL vertex shader */
  59 };
  60
  61
  62 struct vbo_exec_eval1_map {
  63    struct gl_1d_map *map;
  64    GLuint sz;
  65 };
  66
  67 struct vbo_exec_eval2_map {
  68    struct gl_2d_map *map;
  69    GLuint sz;
  70 };
  71
  72
  73
  74 struct vbo_exec_copied_vtx {
  75    fi_type buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  76    GLuint nr;
  77 };
  78
  79
  80 struct vbo_exec_context
  81 {
  82    struct gl_context *ctx;
  83    GLvertexformat vtxfmt;
  84    GLvertexformat vtxfmt_noop;
  85    GLboolean validating; /**< if we're in the middle of state validation */
  86
  87    struct {
  88       struct gl_buffer_object *bufferobj;
  89
  90       GLuint vertex_size;       /* in dwords */
  91
  92       struct _mesa_prim prim[VBO_MAX_PRIM];
  93       GLuint prim_count;
  94
  95       fi_type *buffer_map;
  96       fi_type *buffer_ptr;              /* cursor, points into buffer */
  97       GLuint   buffer_used;             /* in bytes */
  98       fi_type vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  99
 100       GLuint vert_count;
 101       GLuint max_vert;
 102       struct vbo_exec_copied_vtx copied;
 103
 104       GLubyte attrsz[VBO_ATTRIB_MAX];
 105       GLenum attrtype[VBO_ATTRIB_MAX];
 106       GLubyte active_sz[VBO_ATTRIB_MAX];
 107
 108       fi_type *attrptr[VBO_ATTRIB_MAX];
 109       struct gl_client_array arrays[VERT_ATTRIB_MAX];
 110
 111       /* According to program mode, the values above plus current
 112        * values are squashed down to the 32 attributes passed to the
 113        * vertex program below:
 114        */
 115       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 116    } vtx;
 117
 118
 119    struct {
 120       GLboolean recalculate_maps;
 121       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 122       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 123    } eval;
 124
 125    struct {
 126       /* Arrays and current values manipulated according to program
 127        * mode, etc.  These are the attributes as seen by vertex
 128        * programs:
 129        */
 130       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 131       GLboolean recalculate_inputs;
 132    } array;
 133
 134    /* Which flags to set in vbo_exec_BeginVertices() */
 135    GLbitfield begin_vertices_flags;
 136
 137 #ifdef DEBUG
 138    GLint flush_call_depth;
 139 #endif
 140 };
 141
 142
 143
 144 /* External API:
 145  */
 146 void vbo_exec_init( struct gl_context *ctx );
 147 void vbo_exec_destroy( struct gl_context *ctx );
 148 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
 149
 150 void vbo_exec_BeginVertices( struct gl_context *ctx );
 151 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
 152
 153
 154 /* Internal functions:
 155  */
 156
 157 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 158 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 159
 160
 161 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 162 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 163
 164
 165 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
 166
 167 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 168
 169 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 170                                      GLfloat u, GLfloat v );
 171
 172 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 173                                      GLfloat u);
 174
 175 #endif