The cloud mesh radius came from the render distance, the far plane was
capped at max(4 x render distance, 1024) and the cloud fog end was a
constant 2048, so lowering the render distance cut the clouds short.
Vanilla ties all three to options.cloudRange: CloudRenderer.prepare
builds ceil(range * 16 / 12) cells, Camera.depthFar is
max(4 x render distance, range * 16) (also the hand projection, the
frustum and the world border), and AtmosphericFogEnvironment ends
cloud fog at min(range * 16, visual/cloud_fog_end_distance).
The cloud render harness now checks the radius for Cloud Distance
2..128 against the shipped mesh builder, and the environment harness
covers visual/cloud_fog_end_distance.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ludovic Marie
Cosmic