docs: public static void bufferDepthToU16( ByteBuffer input , GrayU16 output ) {
  		int indexIn = 0;
  		for( int y = 0; y < output.height; y++ ) {
  			int indexOut = output.startIndex + y*output.stride;
  			for( int x = 0; x < output.width; x++ , indexOut++ ) {
  				output.data[indexOut] = (short)((input.get(indexIn++) & 0xFF) | ((input.get(indexIn++) & 0xFF) << 8 ));
  			}
  		}
  	}