What happened?

I'm on 1.18.1 fabric with sodium 0.4.0 and iris 1.2.0. The bug causes shadows to become lines on the screen for every single shader pack and resource pack. However the effects are different for each. If motion blur is enabled on Sildurs, it creates cuts in the blur. However, if motion blur is enabled on BSL, objects within the cuts are blurred. This only occurs on 1.18.1. When I went to 1.19, it was perfectly fine. I am unsure on how to recreate this.

Screenshots

Shadows on Sildurs

Blur on Sildurs

Blur on BSL

Relevant log output

No response

Minecraft Version

Minecraft 1.18.1

Iris Version

iris-mc1.18.1-1.2.0-pre

Sodium Version

sodium-fabric-mc1.18.1-0.4.0-alpha6+build.14

Operating System

Windows 10

What is your GPU?

NVIDIA GeForce GTX 970

Java Version

Java 17

Additional context

No response

This is an issue with the newest NVIDIA driver, either downgrade to 512 or use Iris 1.2.5 on 1.18.2.

Thanks for the detailed report. As IMS says, this should not affect Iris 1.2.5 on 1.18.2. We don't officially support 1.18.1 anymore and this should not affect newer Iris versions so I will be closing this. If it happens on Iris 1.2.5 then this can be reopened.