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Added scatter/gather memcpy.

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This commit is contained in:
Branimir Karadžić
2016-02-06 13:41:05 -08:00
parent 08ff290e0c
commit 2afdc799d4
1 changed files with 27 additions and 0 deletions
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27
include/bx/bx.h
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@@ -8,6 +8,7 @@
#include <stdint.h> // uint32_t
#include <stdlib.h> // size_t
#include <string.h> // memcpy
#include "config.h"
#include "macros.h"
@@ -52,6 +53,32 @@ namespace bx
return 0 == (un.addr & (_align-1) );
}
/// Scatter/gather memcpy.
inline void memcpy(void* _dst, const void* _src, uint32_t _size, uint32_t _num = 1, uint32_t _srcPitch = 0, uint32_t _dstPitch = 0)
{
const uint8_t* src = (const uint8_t*)_src;
uint8_t* dst = (uint8_t*)_dst;
for (uint32_t ii = 0; ii < _num; ++ii)
{
::memcpy(dst, src, _size);
src += _srcPitch;
dst += _dstPitch;
}
}
///
inline void gather(void* _dst, const void* _src, uint32_t _size, uint32_t _num = 1, uint32_t _srcPitch = 0)
{
memcpy(_dst, _src, _size, _num, _srcPitch, _size);
}
///
inline void scatter(void* _dst, const void* _src, uint32_t _size, uint32_t _num = 1, uint32_t _dstPitch = 0)
{
memcpy(_dst, _src, _size, _num, _size, _dstPitch);
}
} // namespace bx
// Annoying C++0x stuff..