Depth Fog

Vanilla's underwater fog looks the same whether you're 2 blocks or 200 blocks down. Depth Fog fixes that: the deeper you swim below sea level, the darker and closer the fog gets, until the abyss actually feels like the abyss.

This is a purely visual, client-side mod — no gameplay effect, no server dependency, safe to add on top of any pack (works great alongside a water pressure/damage mod, but doesn't need one).

How it works

Depth is measured from sea level (Y=62 by default) downward. As you descend toward a configurable max depth (60 blocks by default), the underwater fog smoothly blends:

• Fog color — from a light blue-green surface tint toward near-black
• Fog distance — the near/far draw planes pull in, so visibility shortens the deeper you go

Everything is a straight linear blend between a "surface" value and a "deep" value — no hard cutoffs, no flickering zones.

OPTIONAL:

Submarine-aware

If you're inside a Sable sub-level (an isolated submarine interior with air), the effect is skipped entirely by default — you won't get deep-ocean fog inside a dry, lit submarine cabin. Toggleable in the config.

Configuration

Fully configurable client-side (depthfog-client.toml):

• seaLevel — Y level treated as the surface (default 62)
• maxDarkenDepth — depth at which the effect reaches full strength (default 60 blocks)
• surfaceFogRed/Green/Blue and deepFogRed/Green/Blue — the two ends of the color blend
• surfaceNearPlane/FarPlane and deepNearPlane/FarPlane — the two ends of the fog-distance blend
• skipInsideSableSubLevels — disable the effect inside Sable submarines/airships (default: on)

Requirements

• None beyond NeoForge — no Create, no other mod dependencies. Sable is an optional integration (only used if installed).

=====================================================================