Fixed noise + light range check noise issue caused by varied hash start fixed. Removed light range check from shader as without a UI control for this it can result in large flat surfaces 'lightening; or 'darkening' at some camera angles. This was because light range check was added to reduce occlusion bleed, but without a UI to adjust the level it wont be correct for all scenes. So better not to have it. Merge branch 'master' of sbox