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
38 extern "C" {
39 #endif
40
41
42 static INLINE void
util_draw_init_info(struct pipe_draw_info * info)43 util_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
51 static INLINE void
util_draw_arrays(struct pipe_context * pipe,uint mode,uint start,uint count)52 util_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
66 static INLINE void
util_draw_elements(struct pipe_context * pipe,int index_bias,uint mode,uint start,uint count)67 util_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
82 static INLINE void
util_draw_arrays_instanced(struct pipe_context * pipe,uint mode,uint start,uint count,uint start_instance,uint instance_count)83 util_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
102 static INLINE void
util_draw_elements_instanced(struct pipe_context * pipe,int index_bias,uint mode,uint start,uint count,uint start_instance,uint instance_count)103 util_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
123 static INLINE void
util_draw_range_elements(struct pipe_context * pipe,int index_bias,uint min_index,uint max_index,uint mode,uint start,uint count)124 util_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
145 unsigned
146 util_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