# Firmament 0.22
**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
dense skip noise that cannot change them; higher Cloud Coverage settings
benefit too.
- **Under the hood:** repeated shader code now uses shared helpers, the
reflection-snapshot pass decodes each pixel once, and unused declarations
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
further optimization ideas were measured and left out because they were not
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**.
Automated OpenGL comparisons match 0.21 exactly.
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**.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }
