LOTR:WITN was a PS360 game, so it's running on a 2005 console. Best example of god rays here: Of course, those consoles had an abundance of bandwidth and fillrate versus mobile. To incorporate into Sleek render, you'd need to find an efficient way to create a radial blur. If possible, that could then be used in various effects. Just filter scene based on brightness, radial blue about a point, and blend back. Where Gaussian blurs are well accelerated, I don't know of any radial blur solution. My game uses repeated scaling to create volumetric shadows.