perf(sky): skip the night-sky lattice entirely while the day fade is zero

The enhanced sky multiplied the full 4-tier star lattice by a night
factor of 0.0 all day long. Early-out when the star layer's lighting
product says daytime, so the pack's night sky costs nothing outside
dusk-to-dawn. sky.frag.spv re-pinned.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-08-23 18:09:04 +02:00
parent b8cfee6d08
commit 91084b9a83
4 changed files with 8 additions and 2 deletions