Here is the full daynight shader cycle with godrays and an example map.
Several bugs including the wierd offset for the sun was fixed, also lensflare shader inpout is ready, but the lensflare shader isn't yet.
Godrays settings have several tweaks wich is read from camara:GetKeyvalue(), easily set from your app in lua or cpp.
--godray
local fExposure=camera:GetKeyValue("godray_fExposure","0.3")
local fDecay= camera:GetKeyValue("godray_fDecay","0.97")
local fDensity= camera:GetKeyValue("godray_fDensity","0.6")
local fWeight= camera:GetKeyValue("godray_fWeight","0.24")
local fClamp= camera:GetKeyValue("godray_fClamp","1.0")
local fWhiteOnly=camera:GetKeyValue("godray_fWhiteOnly","0")
if fWhiteOnly is set to 1 it will not bleed colors. But I kinda like non white.
Forum only allows 5 mb uploads so here is a dropbox link :
EDIT: soon in the ws.