The Ultimate Guide to SEUS PTGI on Iris & Oculus (Forge Compatibility)
Forge Compatibility: Directly, Forge does not handle shaders. You must install either Oculus (recommended for performance) or Optifine (the traditional method) to enable shader support within a Forge environment. Top Performance Optimization: Sodium and Embeddium seus ptgi iris compatibility oculus forge top
E12 and earlier: Most older PTGI versions are supported via Iris/Oculus's backwards compatibility for OptiFine-style packs. The Ultimate Guide to SEUS PTGI on Iris
Key Fact: SEUS PTGI requires specific OpenGL features that only certain mods can handle. Key Fact: SEUS PTGI requires specific OpenGL features
Fabric Users (Iris Shaders): Iris is the gold standard for performance on Fabric. It has native support for SEUS PTGI HRR 3 and newer versions.
SEUS PTGI was originally designed for OptiFine. While many shaders work flawlessly on Iris/Oculus, PTGI's complex path-tracing code can sometimes cause issues. Reddit·r/direwolf20