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|
{
if (!LockSurface())
return;
int aFPSrcY = (int)(theSrcRect.mY * 0x10000);
int anAddX = (int)((theSrcRect.mWidth * 0x10000) / theDestRect.mWidth);
int anAddY = (int)((theSrcRect.mHeight * 0x10000) / theDestRect.mHeight);
if (theColor == Color::White)
{
if (mSurface->format->BitsPerPixel == 16)
{
//FIXME replace with Uint32 and Uint16
ushort* aDestPixelsRow = ((ushort*) mSurface->pixels) + (theDestRect.mY * mSurface->pitch/2) + theDestRect.mX;
uint32_t aRMask = mSurface->format->Rmask;
uint32_t aGMask = mSurface->format->Gmask;
uint32_t aBMask = mSurface->format->Bmask;
uint32_t aRRoundAdd = aRMask >> 1;
uint32_t aGRoundAdd = aGMask >> 1;
uint32_t aBRoundAdd = aBMask >> 1;
for (int y = 0; y < theDestRect.mHeight; y++)
{
int aFPSrcX = (int)(theSrcRect.mX * 0x10000);
ushort* aDestPixels = aDestPixelsRow;
SRC_TYPE* aSrcPixelsRow = aSrcBits + (aSrcMemoryImage->mWidth * (aFPSrcY >> 16));
for (int x = 0; x < theDestRect.mWidth; x++, aFPSrcX += anAddX)
{
SRC_TYPE* aSrcPixels = aSrcPixelsRow + (aFPSrcX >> 16);
uint32_t src = READ_COLOR(aSrcPixels);
uint32_t dest = *aDestPixels;
int a = src >> 24;
if (a != 0)
{
int oma = 256 - a;
*(aDestPixels _PLUSPLUS) =
src +
(((((dest & aRMask) * oma)) >> 8) & aRMask) +
(((((dest & aGMask) * oma)) >> 8) & aGMask) +
(((((dest & aBMask) * oma)) >> 8) & aBMask);
}
else
aDestPixels _PLUSPLUS;
}
aDestPixelsRow += mSurface->pitch/2;
aFPSrcY += anAddY;
}
}
else if (mSurface->format->BitsPerPixel == 32)
{
uint32_t* aDestPixelsRow = ((uint32_t*) mSurface->pixels) + (theDestRect.mY * mSurface->pitch/4) + theDestRect.mX;
uint32_t aRMask = mSurface->format->Rmask;
uint32_t aGMask = mSurface->format->Gmask;
uint32_t aBMask = mSurface->format->Bmask;
uint32_t aRRoundAdd = aRMask >> 1;
uint32_t aGRoundAdd = aGMask >> 1;
uint32_t aBRoundAdd = aBMask >> 1;
for (int y = 0; y < theDestRect.mHeight; y++)
{
int aFPSrcX = (int)(theSrcRect.mX * 0x10000);
uint32_t* aDestPixels = aDestPixelsRow;
SRC_TYPE* aSrcPixelsRow = aSrcBits + (aSrcMemoryImage->mWidth * (aFPSrcY >> 16));
for (int x = 0; x < theDestRect.mWidth; x++, aFPSrcX += anAddX)
{
SRC_TYPE* aSrcPixels = aSrcPixelsRow + (aFPSrcX >> 16);
uint32_t src = READ_COLOR(aSrcPixels);
uint32_t dest = *aDestPixels;
int a = src >> 24;
if (a != 0)
{
int oma = 256 - a;
*(aDestPixels _PLUSPLUS) =
src +
(((((dest & aRMask) * oma)) >> 8) & aRMask) +
(((((dest & aGMask) * oma)) >> 8) & aGMask) +
(((((dest & aBMask) * oma)) >> 8) & aBMask);
}
else
aDestPixels _PLUSPLUS;
}
aDestPixelsRow += mSurface->pitch/4;
aFPSrcY += anAddY;
}
}
}
else
{
int ca = theColor.mAlpha;
int cr = (theColor.mRed * ca) / 255;
int cg = (theColor.mGreen * ca) / 255;
int cb = (theColor.mBlue * ca) / 255;
if (mSurface->format->BitsPerPixel == 16)
{
ushort* aDestPixelsRow = ((ushort*) mSurface->pixels) + (theDestRect.mY * mSurface->pitch/2) + theDestRect.mX;
uint32_t aRMask = mSurface->format->Rmask;
uint32_t aGMask = mSurface->format->Gmask;
uint32_t aBMask = mSurface->format->Bmask;
uint32_t aRRoundAdd = aRMask >> 1;
uint32_t aGRoundAdd = aGMask >> 1;
uint32_t aBRoundAdd = aBMask >> 1;
for (int y = 0; y < theDestRect.mHeight; y++)
{
int aFPSrcX = (int)(theSrcRect.mX * 0x10000);
ushort* aDestPixels = aDestPixelsRow;
SRC_TYPE* aSrcPixelsRow = aSrcBits + (aSrcMemoryImage->mWidth * (aFPSrcY >> 16));
for (int x = 0; x < theDestRect.mWidth; x++, aFPSrcX += anAddX)
{
SRC_TYPE* aSrcPixels = aSrcPixelsRow + (aFPSrcX >> 16);
uint32_t src = READ_COLOR(aSrcPixels);
uint32_t dest = *aDestPixels;
int a = ((src >> 24) * ca) / 255;
if (a != 0)
{
int oma = 256 - a;
*(aDestPixels _PLUSPLUS) =
(((((dest & aRMask) * oma) + ((src & aRMask) * cr)) >> 8) & aRMask) +
(((((dest & aGMask) * oma) + ((src & aGMask) * cg)) >> 8) & aGMask) +
(((((dest & aBMask) * oma) + ((src & aBMask) * cb)) >> 8) & aBMask);
}
else
aDestPixels _PLUSPLUS;
}
aDestPixelsRow += mSurface->pitch/2;
aFPSrcY += anAddY;
}
}
else if (mSurface->format->BitsPerPixel == 32)
{
uint32_t* aDestPixelsRow = ((uint32_t*) mSurface->pixels) + (theDestRect.mY * mSurface->pitch/4) + theDestRect.mX;
uint32_t aRMask = mSurface->format->Rmask;
uint32_t aGMask = mSurface->format->Gmask;
uint32_t aBMask = mSurface->format->Bmask;
uint32_t aRRoundAdd = aRMask >> 1;
uint32_t aGRoundAdd = aGMask >> 1;
uint32_t aBRoundAdd = aBMask >> 1;
for (int y = 0; y < theDestRect.mHeight; y++)
{
int aFPSrcX = (int)(theSrcRect.mX * 0x10000);
uint32_t* aDestPixels = aDestPixelsRow;
SRC_TYPE* aSrcPixelsRow = aSrcBits + (aSrcMemoryImage->mWidth * (aFPSrcY >> 16));
for (int x = 0; x < theDestRect.mWidth; x++, aFPSrcX += anAddX)
{
SRC_TYPE* aSrcPixels = aSrcPixelsRow + (aFPSrcX >> 16);
uint32_t src = READ_COLOR(aSrcPixels);
uint32_t dest = *aDestPixels;
int a = ((src >> 24) * ca) / 255;
int oma = 256 - a;
if (a != 0)
{
int oma = 256 - a;
*(aDestPixels _PLUSPLUS) =
(((((dest & aRMask) * oma) + ((src & aRMask) * cr)) >> 8) & aRMask) +
(((((dest & aGMask) * oma) + ((src & aGMask) * cg)) >> 8) & aGMask) +
(((((dest & aBMask) * oma) + ((src & aBMask) * cb)) >> 8) & aBMask);
}
else
aDestPixels _PLUSPLUS;
}
aDestPixelsRow += mSurface->pitch/4;
aFPSrcY += anAddY;
}
}
}
UnlockSurface();
}
|
