lp_bld_swizzle.h revision efc82aef35a2aac5d2ed9774f6d28f2626796416 
1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
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11 * permit persons to whom the Software is furnished to do so, subject to
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15 * next paragraph) shall be included in all copies or substantial portions
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19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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27
28/**
29 * @file
30 * Helper functions for swizzling/shuffling.
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 "gallivm/lp_bld.h"
41
42
43struct lp_type;
44struct lp_build_context;
45
46
47LLVMValueRef
48lp_build_broadcast(struct gallivm_state *gallivm,
49                   LLVMTypeRef vec_type,
50                   LLVMValueRef scalar);
51
52
53LLVMValueRef
54lp_build_broadcast_scalar(struct lp_build_context *bld,
55                          LLVMValueRef scalar);
56
57
58LLVMValueRef
59lp_build_extract_broadcast(struct gallivm_state *gallivm,
60                           struct lp_type src_type,
61                           struct lp_type dst_type,
62                           LLVMValueRef vector,
63                           LLVMValueRef index);
64
65
66/**
67 * Broadcast one channel of a vector composed of arrays of XYZW structures into
68 * all four channel.
69 */
70LLVMValueRef
71lp_build_swizzle_scalar_aos(struct lp_build_context *bld,
72                       LLVMValueRef a,
73                       unsigned channel);
74
75
76/**
77 * Swizzle a vector consisting of an array of XYZW structs.
78 *
79 * @param swizzles is the in [0,4[ range.
80 */
81LLVMValueRef
82lp_build_swizzle_aos(struct lp_build_context *bld,
83                     LLVMValueRef a,
84                     const unsigned char swizzles[4]);
85
86
87LLVMValueRef
88lp_build_swizzle_soa_channel(struct lp_build_context *bld,
89                             const LLVMValueRef *unswizzled,
90                             unsigned swizzle);
91
92
93void
94lp_build_swizzle_soa(struct lp_build_context *bld,
95                     const LLVMValueRef *unswizzled,
96                     const unsigned char swizzles[4],
97                     LLVMValueRef *swizzled);
98
99
100void
101lp_build_swizzle_soa_inplace(struct lp_build_context *bld,
102                             LLVMValueRef *values,
103                             const unsigned char swizzles[4]);
104
105
106#endif /* !LP_BLD_SWIZZLE_H */
107