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 43 struct lp_type; 44 struct lp_build_context; 45 46 47 #define LP_BLD_SWIZZLE_DONTCARE 0xFF 48 49 50 LLVMValueRef 51 lp_build_broadcast(struct gallivm_state *gallivm, 52 LLVMTypeRef vec_type, 53 LLVMValueRef scalar); 54 55 56 LLVMValueRef 57 lp_build_broadcast_scalar(struct lp_build_context *bld, 58 LLVMValueRef scalar); 59 60 61 LLVMValueRef 62 lp_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 */ 73 LLVMValueRef 74 lp_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 */ 84 LLVMValueRef 85 lp_build_swizzle_aos(struct lp_build_context *bld, 86 LLVMValueRef a, 87 const unsigned char swizzles[4]); 88 89 90 LLVMValueRef 91 lp_build_swizzle_soa_channel(struct lp_build_context *bld, 92 const LLVMValueRef *unswizzled, 93 unsigned swizzle); 94 95 96 void 97 lp_build_swizzle_soa(struct lp_build_context *bld, 98 const LLVMValueRef *unswizzled, 99 const unsigned char swizzles[4], 100 LLVMValueRef *swizzled); 101 102 103 void 104 lp_build_swizzle_soa_inplace(struct lp_build_context *bld, 105 LLVMValueRef *values, 106 const unsigned char swizzles[4]); 107 108 109 void 110 lp_build_transpose_aos(struct gallivm_state *gallivm, 111 struct lp_type type, 112 const LLVMValueRef src[4], 113 LLVMValueRef dst[4]); 114 115 116 LLVMValueRef 117 lp_build_pack_aos_scalars(struct gallivm_state *gallivm, 118 struct lp_type src_type, 119 struct lp_type dst_type, 120 const LLVMValueRef src); 121 122 123 LLVMValueRef 124 lp_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