Implementation of volumetric clouds#104
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Volumetric Clouds
Adds ray-marched volumetric clouds to Sky3D as a separate spatial shader, following the same pattern as AtmFog.
Features
Ray-marched cloud rendering on screen quad
Procedural value noise FBM for cloud shapes
Height gradient profiles (stratus, stratocumulus, cumulus, cumulonimbus)
Beer-Lambert light extinction with self-shadowing
Day/sunset/night color transitions
Wind animation synced with existing cloud system
Integrates with existing sun light color and cumulus night color
MSAA implementation for better look with MSAA being used
Files
Added: shaders/VolumetricClouds.gdshader
Modified: src/SkyDome.gd
Exposed Parameters
Layer geometry (cloud bottom/top)
Coverage, cloud type, density
Absorption
Base noise scale
March steps, shadow steps
Known Limitations
Procedural noise can cause shimmer at low step counts
Performance scales with march_steps (default 64)