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1 /*
2  * Copyright (C) 2009-2010 Francisco Jerez.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26 
27 #ifndef __NOUVEAU_SCRATCH_H__
28 #define __NOUVEAU_SCRATCH_H__
29 
30 #define NOUVEAU_SCRATCH_COUNT 2
31 #define NOUVEAU_SCRATCH_SIZE 3*1024*1024
32 
33 struct nouveau_scratch_state {
34 	struct nouveau_bo *bo[NOUVEAU_SCRATCH_COUNT];
35 
36 	int index;
37 	int offset;
38 	void *buf;
39 };
40 
41 void *
42 nouveau_get_scratch(struct gl_context *ctx, unsigned size,
43 		    struct nouveau_bo **bo, unsigned *offset);
44 
45 void
46 nouveau_scratch_init(struct gl_context *ctx);
47 
48 void
49 nouveau_scratch_destroy(struct gl_context *ctx);
50 
51 #endif
52