1 /*
2  * Copyright (C) 2019 Collabora, Ltd.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  *
23  * Authors (Collabora):
24  *   Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
25  *
26  */
27 
28 #ifndef __PAN_PARTIAL_UPDATE_H
29 #define __PAN_PARTIAL_UPDATE_H
30 
31 #include "pipe/p_state.h"
32 
33 /* Like pipe_box but in terms of maxx/maxy instead of w/h, which is much easier
34  * to work with for our purposes */
35 
36 struct pan_rect {
37         unsigned minx, miny;
38         unsigned maxx, maxy;
39 };
40 
41 struct pan_rect *
42 pan_subtract_damage(
43                 void *memctx,
44                 unsigned initial_w, unsigned initial_h,
45                 unsigned nrects,
46                 const struct pipe_box *rects,
47                 unsigned *R_len);
48 
49 #endif
50