lp_bld_swizzle.h revision 1dd7bb17c7331f9ecd0bc830b61ada235a56fe6d 
1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
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14 * The above copyright notice and this permission notice (including the
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27
28/**
29 * @file
30 * Helper functions for constant building.
31 *
32 * @author Jose Fonseca <jfonseca@vmware.com>
33 */
34
35
36#ifndef LP_BLD_SWIZZLE_H
37#define LP_BLD_SWIZZLE_H
38
39
40#include <llvm-c/Core.h>
41
42
43union lp_type type;
44struct lp_build_context;
45
46
47/**
48 * Broadcast one channel of a vector composed of arrays of XYZW structures into
49 * all four channel.
50 */
51LLVMValueRef
52lp_build_broadcast_aos(struct lp_build_context *bld,
53                       LLVMValueRef a,
54                       unsigned channel);
55
56
57LLVMValueRef
58lp_build_select_aos(struct lp_build_context *bld,
59                    LLVMValueRef a,
60                    LLVMValueRef b,
61                    boolean cond[4]);
62
63
64/**
65 * Swizzle a vector consisting of an array of XYZW structs.
66 *
67 * @param swizzle is the in [0,4[ range.
68 */
69LLVMValueRef
70lp_build_swizzle1_aos(struct lp_build_context *bld,
71                      LLVMValueRef a,
72                      unsigned char swizzle[4]);
73
74
75/**
76 * Swizzle two vector consisting of an array of XYZW structs.
77 *
78 * @param swizzle is the in [0,8[ range. Values in [4,8[ range refer to b.
79 */
80LLVMValueRef
81lp_build_swizzle2_aos(struct lp_build_context *bld,
82                      LLVMValueRef a,
83                      LLVMValueRef b,
84                      unsigned char swizzle[4]);
85
86
87#endif /* !LP_BLD_SWIZZLE_H */
88