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  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. #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 */
  149.