st_draw.h revision 3464ebd5 
1/**************************************************************************
2 *
3 * Copyright 2004 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /*
29  * Authors:
30  *   Keith Whitwell <keith@tungstengraphics.com>
31  */
32
33
34#ifndef ST_DRAW_H
35#define ST_DRAW_H
36
37#include "main/compiler.h"
38#include "main/glheader.h"
39
40struct _mesa_index_buffer;
41struct _mesa_prim;
42struct gl_client_array;
43struct gl_context;
44struct st_context;
45
46void st_init_draw( struct st_context *st );
47
48void st_destroy_draw( struct st_context *st );
49
50extern void
51st_draw_vbo(struct gl_context *ctx,
52            const struct gl_client_array **arrays,
53            const struct _mesa_prim *prims,
54            GLuint nr_prims,
55            const struct _mesa_index_buffer *ib,
56	    GLboolean index_bounds_valid,
57            GLuint min_index,
58            GLuint max_index);
59
60extern void
61st_feedback_draw_vbo(struct gl_context *ctx,
62                     const struct gl_client_array **arrays,
63                     const struct _mesa_prim *prims,
64                     GLuint nr_prims,
65                     const struct _mesa_index_buffer *ib,
66		     GLboolean index_bounds_valid,
67                     GLuint min_index,
68                     GLuint max_index);
69
70/* Internal function:
71 */
72extern enum pipe_format
73st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
74                      GLboolean normalized);
75
76
77/**
78 * When drawing with VBOs, the addresses specified with
79 * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
80 * addresses.  At some point we need to convert those pointers to offsets.
81 * This function is basically a cast wrapper to avoid warnings when building
82 * in 64-bit mode.
83 */
84static INLINE unsigned
85pointer_to_offset(const void *ptr)
86{
87   return (unsigned) (((unsigned long) ptr) & 0xffffffffUL);
88}
89
90
91#endif
92