Q. Why doesn't the Iris Installer work?
A. You need java, please get it from: Adoptium.net
Q. How can I configure my shaders?
A. #663
Q. Why is (insert shader) not working?
A. That shader likely isn't supported currently, but should be in the future. See the list of supported shaders here
Q. How do I disable my shaders?
A. Press K to disable shaders without using the GUI.
Q. I added Iris, why is my game crashing?
A. There are a few possible reasons:
• You're using an outdated version of Indium, Sodium Extras or Better Sodium Menu.
• You're using an unsupported shader pack.
• You're using macOS, which has limited support.
• You may have an incompatible mod installed.
Q. What shaders have been tested and are working with Iris?
A. See this document for the list
Q. Will (insert feature) part of OptiFine be added to iris?
A. Iris is specifically a shaders mod. Other features are not planned for Iris. However, many other wonderful mods have been made by the fabric modding community which cover many of the features of OptiFine.
The following is a short list, more alternatives can be found through further research, the list is alphabetical.
Better Grass/Snow - LambdaBetterGrass
Chunk Caching - Bobby - Bobby is incompatible with Starlight.
Connected Textures - Continuity
Custom Item Textures - CIT-Resewn - You need to enable “Broken Paths” or MANY PACKS WILL NOT WORK.
Dynamic Lights - LambDynamicLights
Smart Leaves - Cull Leaves
Performance - Iris already requires Sodium, but we also recommend Lithium, Hydrogen, and FerriteCore. You can also use either Phosphor or Starlight. Phosphor does not have a 1.18 version yet.
Various OptiFine features including toggles for animations, particles, and fog - Sodium Extra
Zoom - OkZoomer or Logical Zoom, Spy Zoom for a vanilla alternative
You will also need Indium and Fabric-API for most mods as well as ModMenu for settings.