src/gallium/drivers/llvmpipe/lp_bld_format.h

   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
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  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.
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  25  *
  26  **************************************************************************/
  27
  28 #ifndef LP_BLD_H
  29 #define LP_BLD_H
  30
  31
  32 /**
  33  * @file
  34  * Pixel format helpers.
  35  */
  36
  37 #include <llvm-c/Core.h>
  38
  39 #include "pipe/p_format.h"
  40
  41 struct util_format_description;
  42 union lp_type;
  43
  44
  45 /**
  46  * Unpack a pixel into its RGBA components.
  47  *
  48  * @param packed integer.
  49  *
  50  * @return RGBA in a 4 floats vector.
  51  */
  52 LLVMValueRef
  53 lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
  54                          enum pipe_format format,
  55                          LLVMValueRef packed);
  56
  57
  58 /**
  59  * Pack a pixel.
  60  *
  61  * @param rgba 4 float vector with the unpacked components.
  62  */
  63 LLVMValueRef
  64 lp_build_pack_rgba_aos(LLVMBuilderRef builder,
  65                        enum pipe_format format,
  66                        LLVMValueRef rgba);
  67
  68
  69 /**
  70  * Load a pixel into its RGBA components.
  71  *
  72  * @param ptr value with the pointer to the packed pixel. Pointer type is
  73  * irrelevant.
  74  *
  75  * @return RGBA in a 4 floats vector.
  76  */
  77 LLVMValueRef
  78 lp_build_load_rgba_aos(LLVMBuilderRef builder,
  79                        enum pipe_format format,
  80                        LLVMValueRef ptr);
  81
  82
  83 /**
  84  * Store a pixel.
  85  *
  86  * @param rgba 4 float vector with the unpacked components.
  87  */
  88 void
  89 lp_build_store_rgba_aos(LLVMBuilderRef builder,
  90                         enum pipe_format format,
  91                         LLVMValueRef ptr,
  92                         LLVMValueRef rgba);
  93
  94 LLVMValueRef
  95 lp_build_gather(LLVMBuilderRef builder,
  96                 unsigned length,
  97                 unsigned src_width,
  98                 unsigned dst_width,
  99                 LLVMValueRef base_ptr,
 100                 LLVMValueRef offsets);
 101
 102
 103 void
 104 lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
 105                          const struct util_format_description *format_desc,
 106                          union lp_type type,
 107                          LLVMValueRef packed,
 108                          LLVMValueRef *rgba);
 109
 110
 111 void
 112 lp_build_load_rgba_soa(LLVMBuilderRef builder,
 113                        const struct util_format_description *format_desc,
 114                        union lp_type type,
 115                        LLVMValueRef base_ptr,
 116                        LLVMValueRef offsets,
 117                        LLVMValueRef *rgba);
 118
 119 #endif /* !LP_BLD_H */