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
40 struct _mesa_index_buffer;
41 struct _mesa_prim;
42 struct gl_client_array;
43 struct gl_context;
44 struct st_context;
45
46 void st_init_draw( struct st_context *st );
47
48 void st_destroy_draw( struct st_context *st );
49
50 extern void
51 st_draw_vbo(struct gl_context *ctx,
52 const struct _mesa_prim *prims,
53 GLuint nr_prims,
54 const struct _mesa_index_buffer *ib,
55 GLboolean index_bounds_valid,
56 GLuint min_index,
57 GLuint max_index,
58 struct gl_transform_feedback_object *tfb_vertcount);
59
60 extern void
61 st_feedback_draw_vbo(struct gl_context *ctx,
62 const struct _mesa_prim *prims,
63 GLuint nr_prims,
64 const struct _mesa_index_buffer *ib,
65 GLboolean index_bounds_valid,
66 GLuint min_index,
67 GLuint max_index,
68 struct gl_transform_feedback_object *tfb_vertcount);
69
70 /**
71 * When drawing with VBOs, the addresses specified with
72 * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
73 * addresses. At some point we need to convert those pointers to offsets.
74 * This function is basically a cast wrapper to avoid warnings when building
75 * in 64-bit mode.
76 */
77 static INLINE unsigned
pointer_to_offset(const void * ptr)78 pointer_to_offset(const void *ptr)
79 {
80 return (unsigned) (((unsigned long) ptr) & 0xffffffffUL);
81 }
82
83
84 #endif
85