sky lighting, work in progress
SimpleSkyNode upgrades in progress
SimpleSkyNode: lighting shaders
More work on sky shaders
SkyNode shaders
add lighting effect
update simple sky options
add GL sky
rename lighteffect
Fix silverlining draw order; fix phong lighting setup
simple sky: ramp exposure.
add specular component to the simple sky shader
SimpleSky: fix phong fallback
moved the lighting uniforms helper from mapnode into sky
Centralize the lighting shader uniform in Sky.cpp
SkyNode: fixed uniform bugg
Merge branch 'master' of github.com:gwaldron/osgearth