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 XYZ.. structures into
71 * all channels XXX...
72 */
73LLVMValueRef
74lp_build_swizzle_scalar_aos(struct lp_build_context *bld,
75                            LLVMValueRef a,
76                            unsigned channel,
77                            unsigned num_channels);
78
79
80/**
81 * Swizzle a vector consisting of an array of XYZW structs.
82 *
83 * @param swizzles is the in [0,4[ range.
84 */
85LLVMValueRef
86lp_build_swizzle_aos(struct lp_build_context *bld,
87                     LLVMValueRef a,
88                     const unsigned char swizzles[4]);
89
90
91LLVMValueRef
92lp_build_swizzle_aos_n(struct gallivm_state* gallivm,
93                       LLVMValueRef src,
94                       const unsigned char* swizzles,
95                       unsigned num_swizzles,
96                       unsigned dst_len);
97
98
99LLVMValueRef
100lp_build_swizzle_soa_channel(struct lp_build_context *bld,
101                             const LLVMValueRef *unswizzled,
102                             unsigned swizzle);
103
104
105void
106lp_build_swizzle_soa(struct lp_build_context *bld,
107                     const LLVMValueRef *unswizzled,
108                     const unsigned char swizzles[4],
109                     LLVMValueRef *swizzled);
110
111
112void
113lp_build_swizzle_soa_inplace(struct lp_build_context *bld,
114                             LLVMValueRef *values,
115                             const unsigned char swizzles[4]);
116
117
118void
119lp_build_transpose_aos(struct gallivm_state *gallivm,
120                       struct lp_type type,
121                       const LLVMValueRef src[4],
122                       LLVMValueRef dst[4]);
123
124
125void
126lp_build_transpose_aos_n(struct gallivm_state *gallivm,
127                         struct lp_type type,
128                         const LLVMValueRef* src,
129                         unsigned num_srcs,
130                         LLVMValueRef* dst);
131
132
133LLVMValueRef
134lp_build_pack_aos_scalars(struct gallivm_state *gallivm,
135                          struct lp_type src_type,
136                          struct lp_type dst_type,
137                          const LLVMValueRef src,
138                          unsigned channel);
139
140
141LLVMValueRef
142lp_build_unpack_broadcast_aos_scalars(struct gallivm_state *gallivm,
143                                      struct lp_type src_type,
144                                      struct lp_type dst_type,
145                                      const LLVMValueRef src);
146
147
148#endif /* !LP_BLD_SWIZZLE_H */
149