EmberVoid Shader

The whole sky has been rebuilt: a physical sky model, a live weather system and three cloud layers.

Sky & light

• New sky model based on atmospheric scattering sky, terrain fog and cloud haze now share one colour source
• Realistic haze: whitish horizon, distant clouds fade naturally into the air, sunset glow stays after sundown
• Sun glare in the eye (blocked by terrain and clouds), light shafts in caves and through trees
• Cleaner god rays, stars and Milky Way (visibility changes per night), no more colour banding in the sky

Weather (new)

• A weather model that changes over hours: humid and dry regions, clear and overcast days
• Clouds grow, live and dissolve; more towering clouds around midday
• Some evenings the clouds spread out (menu option)
• Rain moves in region by region: a high veil first, then the cloud deck closes
• Deserts and badlands are drier; wind slowly changes direction

Clouds

• Volumetric cumulus with 3D shape and fractal detail, towering cumulus and thunderstorm towers with anvil
• Cirrus in two types (puffs and fibrous veils) in local fields
• New mid layer: altocumulus "mackerel sky" in local patches
• Lightning glow inside the clouds during thunderstorms

Performance

• Faster cloud pass, cheaper water reflections and terrain shading
• About +10 % FPS compared to 0.5.4 in our test scene

Compatibility

• Minecraft 1.21.1 and 26.x with Iris (Sodium recommended)
• Older versions (1.19 / 1.20) are untested