Firmament

Your world, in a different light.

Sun on the coast. Clear water below your feet. A village worth coming home to after dark. Firmament gives familiar Minecraft places a warmer atmosphere, using the textures you already have.

Colours stay rich without turning neon, and daylight keeps its contrast. The sky is a deep blue with warm twilight bands, sunlit clouds have white tops, and the water is clear enough to see the sand below.

On calm mornings, a low mist settles in the valleys and over the water, then clears as the sun climbs.

Water takes the colour of its biome: clear turquoise over warm seas, a deeper blue in cold and frozen oceans, murky green in swamps. Streams and waterfalls run clear and churning, and you see glass and water through them.

Dive in, and sunbeams fall through the waves while the light they focus ripples across the seafloor. Kelp sways in the current, specks of silt drift past, and sea pickles glow.

Look up, and the sky shines through a bright window in the rippling surface, with the sun sparkling in it.

Rain rings the surface, and thunderstorms raise the waves and their whitecaps.

Nights stay dark and calm. Torches and lanterns glow from gold to amber, moonlight follows the moon's phases, and stars twinkle overhead. On clear nights, the Milky Way crosses the sky.

Every Nether biome has its own air: red smoke over the wastes, deep crimson in crimson forests, violet around warped forests, a cold blue-green haze in soul sand valleys and grey ash in basalt deltas.

Smoke drifts and rises, glowing orange over the lava sea. Lava runs from a dark red crust to yellow-white veins under a heat shimmer.

Overhangs glow warm from below. Glowstone, shroomlights, portals and crying obsidian shine in their own colours, and torches glow only in the flame.

The End has a sun of its own now: a dark star, ringed with light. Its pale glow casts long shadows from the obsidian pillars, the chorus forests and the End cities.

Far below the islands drifts a sea of violet mist, lit from above and shadowed by the islands. Stars crowd the sky around a glowing nebula.

End portals hold layers of stars to look into, and end crystals glow in their own colours.

Start with High. Balanced lowers the cost; Ultra raises the quality. The Color screen tunes contrast, saturation, vibrance and white balance. Eye adaptation, vignette, sharpening, morning mist and the Milky Way can each be adjusted or switched off, the Water screen sets the waves, clarity, caustics and the whitecaps of a storm, The Nether screen turns its drifting smoke and heat shimmer on or off, and The End screen its star shadows and drifting mist. The settings are available in English and Russian.

1. Install Iris and Sodium builds matching your Minecraft version.
2. Drop the Firmament ZIP into shaderpacks. Keep it zipped.
3. Open Video Settings → Shader Packs, select Firmament, and choose High.

This is a client shader; your server doesn't need it. For Minecraft 26.2 and 26.3, use the OpenGL renderer.

Gameplay-tested on Java 1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13. The extra Minecraft targets in the download files have automated checks; their game tests, and Fabric game tests, are still pending.

Reflections only see what the camera sees. Waterlogged blocks and overlapping transparent surfaces can show artifacts; underwater reflections are disabled to keep the view clear. After reloading chunks with F3+A, shadows of blocks outside your view appear once you look at them. OptiFine, ray tracing, PBR, Distant Horizons and Voxy integration are not included.

Screenshots: real Minecraft 1.21.1 frames of Firmament on the High preset (water with 0.6.0, the End with 0.5.0, the Nether with 0.4.0, the rest with 0.3.0), saved by the game itself. No generated images or colour grading.

By PozziTiv4ik, with editable GLSL included in the ZIP. This shader pack is unrelated to the Hypixel mod named Firmament.

License: MDFL 1.0 · ✅ Modpacks · ✅ Videos & streams · ✅ Compatibility addons · ❌ Reuploads · ❌ Modified copies

MDFL 1.0 applies from version 0.3.0; versions 0.1.0 to 0.2.2 were released under MIT.

All the creative work and in-game testing are done by the mod's creator. AI is just a handy tool working in the background to help generate code and support the project.