- Remove dive component from camY. Was mix(2.0, 1.2, diveT)
(occasional dips into cloud top); now fixed at 2.2, always above
the y=1.5 cloud ceiling. Cloud deck always visible below.
- WEATHER_DENSITY bumped again: sunny 0.55->0.65, cloudy 0.85->0.90,
night 0.65->0.75. Even 'sunny' is now a partly-cloudy sky.
- clouds3d: third fBm detail layer at 3.2x frequency (was 2 layers).
Contributions: base 1.0, mid 0.30, fine 0.12. Combined with the
tighter smoothstep (0.18 -> 0.16) the silhouettes have wispier,
more interesting edges instead of soft blobs.
- Same density bump in clouds2d for consistency.
Richard Zink
42c078a407