workbench/libs/mesa/src/gallium/auxiliary/gallivm/lp_bld_swizzle.h

   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 LLVMValueRef
  48 lp_build_broadcast(struct gallivm_state *gallivm,
  49                    LLVMTypeRef vec_type,
  50                    LLVMValueRef scalar);
  51
  52
  53 LLVMValueRef
  54 lp_build_broadcast_scalar(struct lp_build_context *bld,
  55                           LLVMValueRef scalar);
  56
  57
  58 LLVMValueRef
  59 lp_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  */
  70 LLVMValueRef
  71 lp_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  */
  81 LLVMValueRef
  82 lp_build_swizzle_aos(struct lp_build_context *bld,
  83                      LLVMValueRef a,
  84                      const unsigned char swizzles[4]);
  85
  86
  87 LLVMValueRef
  88 lp_build_swizzle_soa_channel(struct lp_build_context *bld,
  89                              const LLVMValueRef *unswizzled,
  90                              unsigned swizzle);
  91
  92
  93 void
  94 lp_build_swizzle_soa(struct lp_build_context *bld,
  95                      const LLVMValueRef *unswizzled,
  96                      const unsigned char swizzles[4],
  97                      LLVMValueRef *swizzled);
  98
  99
 100 void
 101 lp_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 */