Save the given PixelBuffer to an output device.
static void CL_PNGProvider::save( CL_PixelBuffer buffer, const CL_String & filename, CL_VirtualDirectory & directory); static void CL_PNGProvider::save( CL_PixelBuffer buffer, const CL_String & fullname); static void CL_PNGProvider::save( CL_PixelBuffer buffer, CL_IODevice & iodev);