summaryrefslogtreecommitdiff
path: root/src/mesa/vbo/vbo_context.h
blob: 6b0f14d70ea8307bfbdf67767df62af65c555cde (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
 * mesa 3-D graphics library
 * Version:  6.5
 *
 * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * \file vbo_context.h
 * \brief VBO builder module datatypes and definitions.
 * \author Keith Whitwell
 */


/**
 * \mainpage The VBO builder module
 *
 * This module hooks into the GL dispatch table and catches all vertex
 * building and drawing commands, such as glVertex3f, glBegin and
 * glDrawArrays.  The module stores all incoming vertex data as arrays
 * in GL vertex buffer objects (VBOs), and translates all drawing
 * commands into calls to a driver supplied DrawPrimitives() callback.
 *
 * The module captures both immediate mode and display list drawing,
 * and manages the allocation, reference counting and deallocation of
 * vertex buffer objects itself.
 * 
 * The DrawPrimitives() callback can be either implemented by the
 * driver itself or hooked to the tnl module's _tnl_draw_primitives()
 * function for hardware without tnl capablilties or during fallbacks.
 */


#ifndef _VBO_CONTEXT_H
#define _VBO_CONTEXT_H

#include "vbo_attrib.h"
#include "vbo_save.h"
#include "vbo_exec.h"

GLboolean _vbo_CreateContext( GLcontext *ctx );
void _vbo_DestroyContext( GLcontext *ctx );


struct vbo_context {
   struct vbo_exec_context exec;
   struct vbo_save_context save;

   /* Callback into the driver.  This must always succeed, the driver
    * is responsible for initiating any fallback actions required:
    */
   void (*draw_prims)( GLcontext *ctx,
		       const struct gl_client_array *arrays[],
		       const struct _mesa_prim *prims,
		       GLuint nr_prims,
		       const struct _mesa_index_buffer *ib,
		       GLuint min_index,
		       GLuint max_index );
};


static INLINE struct vbo_context *vbo_context(GLcontext *ctx) 
{
   return (struct vbo_context *)(ctx->swtnl_im);
}

enum {
   VP_NONE = 1,
   VP_NV,
   VP_ARB
};

static INLINE GLuint get_program_mode( GLcontext *ctx )
{
   if (!ctx->VertexProgram._Enabled)
      return VP_NONE;
   else if (ctx->VertexProgram.Current->IsNVProgram)
      return VP_NV;
   else
      return VP_ARB;
}


#endif