1/*
2 * Copyright (C) 2009 Nicolai Haehnle.
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a 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, sublicense, 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
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28#ifndef RADEON_SWIZZLE_H
29#define RADEON_SWIZZLE_H
30
31#include "radeon_program.h"
32
33struct rc_swizzle_split {
34	unsigned char NumPhases;
35	unsigned char Phase[4];
36};
37
38/**
39 * Describe the swizzling capability of target hardware.
40 */
41struct rc_swizzle_caps {
42	/**
43	 * Check whether the given swizzle, absolute and negate combination
44	 * can be implemented natively by the hardware for this opcode.
45	 *
46	 * \return 1 if the swizzle is native for the given opcode
47	 */
48	int (*IsNative)(rc_opcode opcode, struct rc_src_register reg);
49
50	/**
51	 * Determine how to split access to the masked channels of the
52	 * given source register to obtain ALU-native swizzles.
53	 */
54	void (*Split)(struct rc_src_register reg, unsigned int mask, struct rc_swizzle_split * split);
55};
56
57#endif /* RADEON_SWIZZLE_H */
58