1 /**********************************************************
2  * Copyright 2014 VMware, Inc.  All rights reserved.
3  *
4  * Permission is hereby granted, free of charge, to any person
5  * obtaining a copy of this software and associated documentation
6  * files (the "Software"), to deal in the Software without
7  * restriction, including without limitation the rights to use, copy,
8  * modify, merge, publish, distribute, sublicense, and/or sell copies
9  * of the Software, and to permit persons to whom the Software is
10  * furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be
13  * included in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  * SOFTWARE.
23  *
24  **********************************************************/
25 
26 #ifndef SVGA_STREAMOUT_H
27 #define SVGA_STREAMOUT_H
28 
29 struct svga_shader;
30 
31 struct svga_stream_output {
32    struct pipe_stream_output_info info;
33    unsigned pos_out_index;                  // position output index
34    unsigned id;
35    unsigned streammask;                     // bitmask to specify which streams are enabled
36    unsigned buffer_stream;
37    struct svga_winsys_buffer *declBuf;
38 };
39 
40 struct svga_stream_output *
41 svga_create_stream_output(struct svga_context *svga,
42                           struct svga_shader *shader,
43                           const struct pipe_stream_output_info *info);
44 
45 enum pipe_error
46 svga_set_stream_output(struct svga_context *svga,
47                        struct svga_stream_output *streamout);
48 
49 void
50 svga_delete_stream_output(struct svga_context *svga,
51                           struct svga_stream_output *streamout);
52 
53 enum pipe_error
54 svga_rebind_stream_output_targets(struct svga_context *svga);
55 
56 void
57 svga_create_stream_output_queries(struct svga_context *svga);
58 
59 void
60 svga_destroy_stream_output_queries(struct svga_context *svga);
61 
62 void
63 svga_begin_stream_output_queries(struct svga_context *svga, unsigned mask);
64 
65 void
66 svga_end_stream_output_queries(struct svga_context *svga, unsigned mask);
67 
68 unsigned
69 svga_get_primcount_from_stream_output(struct svga_context *svga,
70                                       unsigned stream);
71 
72 #endif /* SVGA_STREAMOUT_H */
73