1/**************************************************************************
2 *
3 * Copyright 2008 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#ifndef U_DRAW_H
29#define U_DRAW_H
30
31
32#include "pipe/p_compiler.h"
33#include "pipe/p_context.h"
34#include "pipe/p_state.h"
35
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41
42static INLINE void
43util_draw_init_info(struct pipe_draw_info *info)
44{
45   memset(info, 0, sizeof(*info));
46   info->instance_count = 1;
47   info->max_index = 0xffffffff;
48}
49
50
51static INLINE void
52util_draw_arrays(struct pipe_context *pipe, uint mode, uint start, uint count)
53{
54   struct pipe_draw_info info;
55
56   util_draw_init_info(&info);
57   info.mode = mode;
58   info.start = start;
59   info.count = count;
60   info.min_index = start;
61   info.max_index = start + count - 1;
62
63   pipe->draw_vbo(pipe, &info);
64}
65
66static INLINE void
67util_draw_elements(struct pipe_context *pipe, int index_bias,
68                   uint mode, uint start, uint count)
69{
70   struct pipe_draw_info info;
71
72   util_draw_init_info(&info);
73   info.indexed = TRUE;
74   info.mode = mode;
75   info.start = start;
76   info.count = count;
77   info.index_bias = index_bias;
78
79   pipe->draw_vbo(pipe, &info);
80}
81
82static INLINE void
83util_draw_arrays_instanced(struct pipe_context *pipe,
84                           uint mode, uint start, uint count,
85                           uint start_instance,
86                           uint instance_count)
87{
88   struct pipe_draw_info info;
89
90   util_draw_init_info(&info);
91   info.mode = mode;
92   info.start = start;
93   info.count = count;
94   info.start_instance = start_instance;
95   info.instance_count = instance_count;
96   info.min_index = start;
97   info.max_index = start + count - 1;
98
99   pipe->draw_vbo(pipe, &info);
100}
101
102static INLINE void
103util_draw_elements_instanced(struct pipe_context *pipe,
104                             int index_bias,
105                             uint mode, uint start, uint count,
106                             uint start_instance,
107                             uint instance_count)
108{
109   struct pipe_draw_info info;
110
111   util_draw_init_info(&info);
112   info.indexed = TRUE;
113   info.mode = mode;
114   info.start = start;
115   info.count = count;
116   info.index_bias = index_bias;
117   info.start_instance = start_instance;
118   info.instance_count = instance_count;
119
120   pipe->draw_vbo(pipe, &info);
121}
122
123static INLINE void
124util_draw_range_elements(struct pipe_context *pipe,
125                         int index_bias,
126                         uint min_index,
127                         uint max_index,
128                         uint mode, uint start, uint count)
129{
130   struct pipe_draw_info info;
131
132   util_draw_init_info(&info);
133   info.indexed = TRUE;
134   info.mode = mode;
135   info.start = start;
136   info.count = count;
137   info.index_bias = index_bias;
138   info.min_index = min_index;
139   info.max_index = max_index;
140
141   pipe->draw_vbo(pipe, &info);
142}
143
144
145unsigned
146util_draw_max_index(
147      const struct pipe_vertex_buffer *vertex_buffers,
148      const struct pipe_vertex_element *vertex_elements,
149      unsigned nr_vertex_elements,
150      const struct pipe_draw_info *info);
151
152
153#ifdef __cplusplus
154}
155#endif
156
157#endif /* !U_DRAW_H */
158