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 
33 struct rc_swizzle_split {
34 	unsigned char NumPhases;
35 	unsigned char Phase[4];
36 };
37 
38 /**
39  * Describe the swizzling capability of target hardware.
40  */
41 struct 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