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Changed: Implement AlphaLuminance resample

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This commit is contained in:
kervala 2016-10-01 18:43:08 +02:00
parent 109ac760c1
commit f6de1efb49
1 changed files with 54 additions and 2 deletions
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56
code/nel/src/misc/bitmap.cpp
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@ -1792,7 +1792,7 @@ void CBitmap::releaseMipMaps()
\*-------------------------------------------------------------------*/
void CBitmap::resample(sint32 nNewWidth, sint32 nNewHeight)
{
nlassert(PixelFormat == RGBA || PixelFormat == Luminance);
nlassert(PixelFormat == RGBA || PixelFormat == Luminance || PixelFormat == AlphaLuminance);
bool needRebuild = false;
// Deleting mipmaps
@ -1832,6 +1832,58 @@ void CBitmap::resample(sint32 nNewWidth, sint32 nNewHeight)
resamplePicture8 (&_Data[0][0], pDestGray, _Width, _Height, nNewWidth, nNewHeight);
//logResample("Resample: 60");
}
else if (PixelFormat == AlphaLuminance)
{
pDestui.resize(nNewWidth*nNewHeight*2);
uint16 *pSrc = (uint16*)&_Data[0][0];
uint16 *pDest = (uint16*)&pDestui[0];
size_t srcSize = _Width*_Width;
uint8 *pSrcGray = new uint8[srcSize];
uint8 *pSrcAlpha = new uint8[srcSize];
// set iterators
uint16 *i = (uint16*)pSrc;
uint16 *iEnd = (uint16*)i + srcSize;
uint8 *iGray = pSrcGray;
uint8 *iAlpha = pSrcAlpha;
// copy alpha and gray in distinct arrays
while (i < iEnd)
{
*(iGray++) = (*i) & 0xff;
*(iAlpha++) = ((*i) >> 8) & 0xff;
++i;
}
size_t destSize = nNewWidth*nNewHeight;
// resample gray values array
uint8 *pDestGray = new uint8[destSize];
resamplePicture8(pSrcGray, pDestGray, _Width, _Height, nNewWidth, nNewHeight);
delete[] pSrcGray;
// resample alpha values array
uint8 *pDestAlpha = new uint8[destSize];
resamplePicture8(pSrcAlpha, pDestAlpha, _Width, _Height, nNewWidth, nNewHeight);
delete[] pSrcAlpha;
// set iterators
i = (uint16*)pDest;
iEnd = (uint16*)i + destSize;
iGray = pDestGray;
iAlpha = pDestAlpha;
// merge alpha and gray in destination array
while (i < iEnd)
{
*(i++) = *(iGray++) | (*(iAlpha++) << 8);
}
delete[] pDestGray;
delete[] pDestAlpha;
}
NLMISC::contReset(_Data[0]); // free memory
//logResample("Resample: 70");
@ -2148,7 +2200,7 @@ void CBitmap::resamplePicture32Fast (const NLMISC::CRGBA *pSrc, NLMISC::CRGBA *p
/*-------------------------------------------------------------------*\
resamplePicture32
resamplePicture8
\*-------------------------------------------------------------------*/
void CBitmap::resamplePicture8 (const uint8 *pSrc, uint8 *pDest,
sint32 nSrcWidth, sint32 nSrcHeight,