src/gallium/drivers/llvmpipe/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 <llvm-c/Core.h>
  41
  42
  43 struct lp_type type;
  44 struct lp_build_context;
  45
  46
  47 LLVMValueRef
  48 lp_build_broadcast(LLVMBuilderRef builder,
  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 /**
  59  * Broadcast one channel of a vector composed of arrays of XYZW structures into
  60  * all four channel.
  61  */
  62 LLVMValueRef
  63 lp_build_broadcast_aos(struct lp_build_context *bld,
  64                        LLVMValueRef a,
  65                        unsigned channel);
  66
  67
  68 /**
  69  * Swizzle a vector consisting of an array of XYZW structs.
  70  *
  71  * @param swizzle is the in [0,4[ range.
  72  */
  73 LLVMValueRef
  74 lp_build_swizzle1_aos(struct lp_build_context *bld,
  75                       LLVMValueRef a,
  76                       const unsigned char swizzle[4]);
  77
  78
  79 /**
  80  * Swizzle two vector consisting of an array of XYZW structs.
  81  *
  82  * @param swizzle is the in [0,8[ range. Values in [4,8[ range refer to b.
  83  */
  84 LLVMValueRef
  85 lp_build_swizzle2_aos(struct lp_build_context *bld,
  86                       LLVMValueRef a,
  87                       LLVMValueRef b,
  88                       const unsigned char swizzle[4]);
  89
  90
  91 #endif /* !LP_BLD_SWIZZLE_H */