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.
Shaders off on the left. Firmament on the right, in every comparison below.
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.
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.
The Nether is deep and shadowy, and its lava lakes keep their orange glow. The End island has shape under a violet sky. Each dimension keeps its own character.
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 settings are available in English and Russian.
- Install Iris and Sodium builds matching your Minecraft version.
- Drop the Firmament ZIP into
shaderpacks. Keep it zipped. - 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 0.3 on the High preset, saved by the game itself. No generated images or colour grading. Clouds, waves and mobs can move between the two halves of a comparison.
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; versions 0.10 to 0.22 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.
All Versions
+ Add Version
- Richer colour, calmer light.** Firmament no longer looks as if the brightness
nights, caves, the Nether and the End keep their mood.
- New tone curve:** a hue-preserving filmic curve keeps mid-grey where it
white; only real highlights such as the sun roll off to white.
- Juicier colour, not neon:** vibrance lifts sky, sand, blossoms and grass,
- Eye adaptation:** centre-weighted metering, and dark scenes are no longer
- Sky:** a deep blue sky with a blue horizon, warm twilight bands, a sun halo,
- Morning mist:** low fog in valleys and over water at sunrise (optional).
- Clouds:** white sunlit tops over grey bases.
- Light:** torches and lanterns fall off naturally from golden to amber, and
- Nether and End:** relit. The Nether is dark and deep instead of a glowing red
- Rain** falls as grey streaks.
- New settings:** Eye adaptation, Contrast, Vibrance, White balance, Vignette,
The same 29 Minecraft Java versions as 0.22: **1.18.2**; **1.19, 1.19.1,
1.19.2 and 1.19.4**; **1.20–1.20.6**; **1.21–1.21.11**; **26.1, 26.1.1,
26.1.2, 26.2 and 26.3**. The new gallery was rendered in Minecraft
- 1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13** on the High preset.
Known: after reloading chunks with F3+A, shadows of blocks outside your view
appear once you look at them. Iris only builds chunks the camera sees.
Use the Iris and Sodium builds matching your Minecraft version; 26.2 and 26.3
target the OpenGL renderer. Keep the ZIP intact, place it in
shaderpacks, andselect Firmament in Iris. Start with High and adjust the preset for your setup.
From 0.3 Firmament is licensed under the MDFL 1.0; 0.10 to 0.22 stay MIT.
A project by **PozziTiv4ik**.
- Faster clouds in rain and tidier shader code, with exactly the same picture.**
- Clouds in rain:** about 1.05× faster. Cloud samples that are already fully
benefit too.
- Under the hood:** repeated shader code now uses shared helpers, the
are gone.
- Same image:** every automated comparison image is bit-identical to 0.21.
- Nothing slower:** every other pass costs the same as in 0.21. Four
faster.
Timings are isolated GPU pass measurements against 0.21 on an RTX 4060 Laptop
GPU at 2560 × 1440 with the High preset, not frame rates. The sky, fog and
night-sky speed-ups of 0.21 are kept.
Rendering, presets, options and the 29 supported Minecraft Java versions are
unchanged from 0.21: **1.18.2**; **1.19, 1.19.1, 1.19.2 and 1.19.4**;
- 1.20–1.20.6**; **1.21–1.21.11**; **26.1, 26.1.1, 26.1.2, 26.2 and 26.3**.
Known: after reloading chunks with F3+A, shadows of blocks outside your view
appear once you look at them. Iris only builds chunks the camera sees.
Use the Iris and Sodium builds matching your Minecraft version; 26.2 and 26.3
target the OpenGL renderer. Recorded gameplay evidence remains
- 1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13** with 0.10-alpha.2.
Keep the ZIP intact, place it in
shaderpacks, and select Firmament in Iris.Start with High and adjust the preset for your setup.
A project by **PozziTiv4ik**.
- A cleaner shader core and a faster sky, with the same look.**
- Sky:** the atmosphere pass computes the sun and moon once per frame instead
- Fog and light shafts:** 1.06–1.17× faster above and below water.
- Night sky:** stars and clouds over open sky about 1.06× faster; ambient
- Under the hood:** shared shader code is reorganized, with named materials
same as in 0.2.
The figures are isolated GPU pass timings measured against 0.2 on an RTX 4060
Laptop GPU at 2560 × 1440 with the High preset, not frame rates. In-game FPS
depends on the scene, render distance and hardware.
Rendering, presets, options and the 29 supported Minecraft Java versions are
unchanged from 0.2: **1.18.2**; **1.19, 1.19.1, 1.19.2 and 1.19.4**;
- 1.20–1.20.6**; **1.21–1.21.11**; **26.1, 26.1.1, 26.1.2, 26.2 and 26.3**.
Known: after reloading chunks with F3+A, shadows of blocks outside your view
appear once you look at them. Iris only builds chunks the camera sees.
Use the Iris and Sodium builds matching your Minecraft version; 26.2 and 26.3
target the OpenGL renderer. Recorded gameplay evidence remains
- 1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13** with 0.10-alpha.2.
Keep the ZIP intact, place it in
shaderpacks, and select Firmament in Iris.Start with High and adjust the preset for your setup.
A project by **PozziTiv4ik**.
- Performance release: more frames, the same look.**
- Nether and End:** the unused sun shadow map is no longer rendered at all.
- Overworld shadows:** a depth-only shadow pass; water and clear glass no
- Cloud shadows:** read from a small map computed once per frame instead of
half as much as in 0.11.
- Fog and light shafts:** cheaper shadow lookups along each ray (about 1.2×).
- Sky:** clouds and stars are rendered after the terrain. Stars are drawn only
cost much less (about 2.4× for a cave view with a strip of sky).
- Ambient occlusion:** open, unoccluded areas skip the reconstruction filter.
The figures are isolated GPU pass timings measured against 0.11 on an RTX 4060
Laptop GPU at 2560 × 1440 with the High preset, not frame rates. In-game FPS
depends on the scene, render distance and hardware.
Rendering, presets, options and the 29 supported Minecraft Java versions are
unchanged from 0.11: **1.18.2**; **1.19, 1.19.1, 1.19.2 and 1.19.4**;
- 1.20–1.20.6**; **1.21–1.21.11**; **26.1, 26.1.1, 26.1.2, 26.2 and 26.3**.
Known: after reloading chunks with F3+A, shadows of blocks outside your view
appear once you look at them. Iris only builds chunks the camera sees.
Use the Iris and Sodium builds matching your Minecraft version; 26.2 and 26.3
target the OpenGL renderer. Recorded gameplay evidence remains
- 1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13** with 0.10-alpha.2.
Keep the ZIP intact, place it in
shaderpacks, and select Firmament in Iris.Start with High and adjust the preset for your setup.
A project by **PozziTiv4ik**.
- Expanded Minecraft compatibility: one ZIP for 29 Java Edition versions.**
- Compatibility targets now include **1.18.2**; **1.19, 1.19.1, 1.19.2 and 1.19.4**;
- 1.20–1.20.6**; **1.21–1.21.11**; **26.1, 26.1.1, 26.1.2, 26.2 and 26.3**.
- Automatic material selection handles older grass names and newer leaves,
- Existing lighting, clear underwater surfaces, all three dimensions and
Use the Iris and Sodium builds matching your Minecraft version. Minecraft
26.2 and 26.3 target the OpenGL renderer. Versions outside the list are not included.
The adaptation passed automated source, material and OpenGL checks. Recorded
gameplay evidence remains **1.21.1 / NeoForge 21.1.228 / Iris 1.8.12 / Sodium 0.6.13**,
captured with 0.10-alpha.2 and the same GLSL. Additional Minecraft/Iris combinations
still await in-game validation; the new version list is not a claim of 29 game tests.
Keep the ZIP intact, place it in
shaderpacks, and select Firmament in Iris.Start with High and adjust the preset for your setup.
A project by **PozziTiv4ik**.
Natural lighting, clear water and a new atmosphere for all three dimensions.
- Soft shadows, volumetric clouds, atmospheric fog and shafts of light.
- Reflective water above the surface, with a clear view from underwater.
- Smoother water reflections without the earlier nighttime star streaks.
- Warm block lighting, moving foliage, wet surfaces, bloom and automatic exposure.
- Balanced, High and Ultra presets, with English and Russian settings.
Tested in Minecraft Java **1.21.1** with **NeoForge 21.1.228**, **Iris 1.8.12**
and **Sodium 0.6.13**. The author captured the gallery with High in the Overworld,
Nether and End. Other game versions and renderer combinations remain untested.
Keep the ZIP intact, place it in
shaderpacks, and select Firmament in Iris.Start with High and adjust the preset for your setup.
A project by **PozziTiv4ik**.
