internal protected override unsafe void Process(Bitmap bmp, RGBAColor *p_top, RGBAColor *p_dest, Rectangle region)
{
if (bmp.Size != BaseLayer.Size)
{
throw new ArgumentException($"The top layer ('{nameof(bmp)}') must have the same dimensions as the base layer. The required dimensions are: {BaseLayer.Width}x{BaseLayer.Height}.", nameof(bmp));
}
int[] indices = GetIndices(BaseLayer, region);
BitmapLocker lck = BaseLayer;
BlendMode mode = Mode;
lck.LockRGBAPixels((p_base, w, h) => Parallel.For(0, indices.Length, i =>
{
int idx = indices[i];
p_dest[idx] = RGBAColor.Blend(p_base[idx], p_top[idx], mode);
}));
}
private protected sealed override RGBAColor ProcessCoordinate(int x, int y, int w, int h, RGBAColor source) => RGBAColor.Blend(source, ProcessCoordinate(x, y, w, h), Blending);