Sky light radiance on clouds.
Cloud albedo colour.
1 = bend local-layer clouds down with distance (flat local frame).
Density multiplier.
Haze distance, metres (0 = none, e.g. in space).
Haze colour (horizon sky).
Moonlight radiance on clouds.
Render-space planet centre.
Planet radius, metres.
Global layer: body → render rotation including wind drift.
Local layer: render-space drift since the last rebuild.
Silver-lining strength.
Direct sunlight radiance on clouds.
Towards the sun.
Creates the uniforms shared by both cloud layers.