about to switch out lighting combiner code
lighting moved out
added configurable texture parameters to gbuffer slots
initial blank-slate exposure mapper
rearranging texture slot parameters
passthrough HDR exposure
adaptive exposure
playing with exposure
added gamma correction to HDR luminance calculation
added uncharted2 tonemap
settling on Reinhard with WhiteLevel
added histogram
changed shadow query to use step instead of smoothstep
reduced shadow blend interval for terrain shadows
start of cloud toplight experiment
added scattering of sky-light