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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 (at) 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