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restored memset optimization

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when dropping optimizations in the last commit, I forgot to keep the
simplest case where a single memset can be called
This commit is contained in:
chacha21 2017-05-19 16:05:00 +02:00
parent fa4fd48072
commit 7763a86634
1 changed files with 16 additions and 11 deletions
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27
modules/imgproc/src/drawing.cpp
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@ -1076,18 +1076,23 @@ static inline void ICV_HLINE_X(uchar* ptr, int xl, int xr, const uchar* color, i
uchar* hline_min_ptr = (uchar*)(ptr) + (xl)*(pix_size);
uchar* hline_end_ptr = (uchar*)(ptr) + (xr+1)*(pix_size);
uchar* hline_ptr = hline_min_ptr;
if (hline_min_ptr < hline_end_ptr)
if (pix_size == 1)
memset(hline_min_ptr, *color, hline_end_ptr-hline_min_ptr);
else//if (pix_size != 1)
{
memcpy(hline_ptr, color, pix_size);
hline_ptr += pix_size;
}//end if (hline_min_ptr < hline_end_ptr)
size_t sizeToCopy = pix_size;
while(hline_ptr < hline_end_ptr)
{
memcpy(hline_ptr, hline_min_ptr, sizeToCopy);
hline_ptr += sizeToCopy;
sizeToCopy = std::min(2*sizeToCopy, static_cast<size_t>(hline_end_ptr-hline_ptr));
}//end while(hline_ptr < hline_end_ptr)
if (hline_min_ptr < hline_end_ptr)
{
memcpy(hline_ptr, color, pix_size);
hline_ptr += pix_size;
}//end if (hline_min_ptr < hline_end_ptr)
size_t sizeToCopy = pix_size;
while(hline_ptr < hline_end_ptr)
{
memcpy(hline_ptr, hline_min_ptr, sizeToCopy);
hline_ptr += sizeToCopy;
sizeToCopy = std::min(2*sizeToCopy, static_cast<size_t>(hline_end_ptr-hline_ptr));
}//end while(hline_ptr < hline_end_ptr)
}//end if (pix_size != 1)
}
//end ICV_HLINE_X()