Fix light atten and transmittance calcs breaking ambient color contrib to fog.
Needs to be tested on DRTSIM-415 or better to get legacy viewer settings that match EEP.
Fix ambient light inputs to the renderer.
Fix 3rd sky shader w/ mistaken density mod conversion.
Make ambient clamp apply to all modes.
Tune ALM ambient clamp to match non-ALM.
Modify calc of sunlight to avoid clipping in gamma correct on values outside 0-1 range.
Modify shaders to put back ambient clamp tuned to be close to ambient contrib in low/mid lighting.
Re-fix sun/moon glow factor and make it depend on moon brightness.
Make cloud shaders use sunlight color exclusively for consistency when moon is up or down.
Make a distinct class3/lighting/lightV which boosts to WL levels (* 2.0)
and make lighting without WL atmo enabled use class 2 or below.
Make forward shaders (alpha and materialF with alpha-blend mode on) more consistent with deferred lighting.
Fix conversion of star brightness, density mult, and distance mult to legacy ranges.
Make settings look in both legacyhaze and top-level settings for haze params.
Make moon brightness env setting affect moon diffuse/ambient color combo so it affects in-world lighting.
Adjust how the moon brightness affects the moon disc texture rendering (washes out less).
Don't step on SUNLIGHT_COLOR uniform w/ syncLightState competing set.
Put drawpool alpha render loop lighting setup changes as they were
(this will give back some performance and possibly require reopening 10566).
Fix side-effects of having both sun and moon as potential directional light contributors.
We pass an int to the shader indicating which to prefer instead of making per-pixel decisions
and pass the moonlight color/di independently.
Obsolete llsettingssky fade color which was unused elsewhere and cached for no reason.
Fix bug with setting texture matrix for rigged mesh.
Fix z-fighting between sea and sky in ALM by cheating sky, stars, and moon using gl_FragDepth.
Fix handling of atmospheric haze glow w.r.t independent sun/moon positioning
(we can no longer depend on them being mutex to each other).
Dave Houlton