src/gallium/auxiliary/gallivm/lp_bld_swizzle.h

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   3  * Copyright 2009 VMware, Inc.
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  16  * of the Software.
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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 XYZ.. structures into
  71  * all channels XXX...
  72  */
  73 LLVMValueRef
  74 lp_build_swizzle_scalar_aos(struct lp_build_context *bld,
  75                             LLVMValueRef a,
  76                             unsigned channel,
  77                             unsigned num_channels);
  78
  79
  80 /**
  81  * Swizzle a vector consisting of an array of XYZW structs.
  82  *
  83  * @param swizzles is the in [0,4[ range.
  84  */
  85 LLVMValueRef
  86 lp_build_swizzle_aos(struct lp_build_context *bld,
  87                      LLVMValueRef a,
  88                      const unsigned char swizzles[4]);
  89
  90
  91 LLVMValueRef
  92 lp_build_swizzle_aos_n(struct gallivm_state* gallivm,
  93                        LLVMValueRef src,
  94                        const unsigned char* swizzles,
  95                        unsigned num_swizzles,
  96                        unsigned dst_len);
  97
  98
  99 LLVMValueRef
 100 lp_build_swizzle_soa_channel(struct lp_build_context *bld,
 101                              const LLVMValueRef *unswizzled,
 102                              unsigned swizzle);
 103
 104
 105 void
 106 lp_build_swizzle_soa(struct lp_build_context *bld,
 107                      const LLVMValueRef *unswizzled,
 108                      const unsigned char swizzles[4],
 109                      LLVMValueRef *swizzled);
 110
 111
 112 void
 113 lp_build_swizzle_soa_inplace(struct lp_build_context *bld,
 114                              LLVMValueRef *values,
 115                              const unsigned char swizzles[4]);
 116
 117
 118 void
 119 lp_build_transpose_aos(struct gallivm_state *gallivm,
 120                        struct lp_type type,
 121                        const LLVMValueRef src[4],
 122                        LLVMValueRef dst[4]);
 123
 124
 125 void
 126 lp_build_transpose_aos_n(struct gallivm_state *gallivm,
 127                          struct lp_type type,
 128                          const LLVMValueRef* src,
 129                          unsigned num_srcs,
 130                          LLVMValueRef* dst);
 131
 132
 133 LLVMValueRef
 134 lp_build_pack_aos_scalars(struct gallivm_state *gallivm,
 135                           struct lp_type src_type,
 136                           struct lp_type dst_type,
 137                           const LLVMValueRef src,
 138                           unsigned channel);
 139
 140
 141 LLVMValueRef
 142 lp_build_unpack_broadcast_aos_scalars(struct gallivm_state *gallivm,
 143                                       struct lp_type src_type,
 144                                       struct lp_type dst_type,
 145                                       const LLVMValueRef src);
 146
 147
 148 #endif /* !LP_BLD_SWIZZLE_H */