src/gallium/auxiliary/gallivm/lp_bld_swizzle.h

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   3  * Copyright 2009 VMware, Inc.
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  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 */