1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * 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, sub license, 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 portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
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
47#define LP_BLD_SWIZZLE_DONTCARE 0xFF
48
49
50LLVMValueRef
51lp_build_broadcast(struct gallivm_state *gallivm,
52                   LLVMTypeRef vec_type,
53                   LLVMValueRef scalar);
54
55
56LLVMValueRef
57lp_build_broadcast_scalar(struct lp_build_context *bld,
58                          LLVMValueRef scalar);
59
60
61LLVMValueRef
62lp_build_extract_broadcast(struct gallivm_state *gallivm,
63                           struct lp_type src_type,
64                           struct lp_type dst_type,
65                           LLVMValueRef vector,
66                           LLVMValueRef index);
67
68
69/**
70 * Broadcast one channel of a vector composed of arrays of XYZW structures into
71 * all four channel.
72 */
73LLVMValueRef
74lp_build_swizzle_scalar_aos(struct lp_build_context *bld,
75                       LLVMValueRef a,
76                       unsigned channel);
77
78
79/**
80 * Swizzle a vector consisting of an array of XYZW structs.
81 *
82 * @param swizzles is the in [0,4[ range.
83 */
84LLVMValueRef
85lp_build_swizzle_aos(struct lp_build_context *bld,
86                     LLVMValueRef a,
87                     const unsigned char swizzles[4]);
88
89
90LLVMValueRef
91lp_build_swizzle_soa_channel(struct lp_build_context *bld,
92                             const LLVMValueRef *unswizzled,
93                             unsigned swizzle);
94
95
96void
97lp_build_swizzle_soa(struct lp_build_context *bld,
98                     const LLVMValueRef *unswizzled,
99                     const unsigned char swizzles[4],
100                     LLVMValueRef *swizzled);
101
102
103void
104lp_build_swizzle_soa_inplace(struct lp_build_context *bld,
105                             LLVMValueRef *values,
106                             const unsigned char swizzles[4]);
107
108
109void
110lp_build_transpose_aos(struct gallivm_state *gallivm,
111                       struct lp_type type,
112                       const LLVMValueRef src[4],
113                       LLVMValueRef dst[4]);
114
115
116LLVMValueRef
117lp_build_pack_aos_scalars(struct gallivm_state *gallivm,
118                          struct lp_type src_type,
119                          struct lp_type dst_type,
120                          const LLVMValueRef src);
121
122
123LLVMValueRef
124lp_build_unpack_broadcast_aos_scalars(struct gallivm_state *gallivm,
125                                      struct lp_type src_type,
126                                      struct lp_type dst_type,
127                                      const LLVMValueRef src);
128
129
130#endif /* !LP_BLD_SWIZZLE_H */
131