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 #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 */