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Faster Iris Shadow Mapper logo

Faster Iris Shadow Mapper

Mod

Improves the speed of Iris' shadow mapping

Type

Mod

Modrinth Downloads

557,358

Modrinth ID

nSRLvOHG

Last Updated

Sep 13, 2026

Description

⚠️ This has been included in Iris 1.11.2, it is now only useful for older MC versions or for forks like oculus ⚠️

Faster Iris Shadow Mapping is a really lightweight mod that prevents unneeded things from rendering during the shadow pass.

This project does not replace Iris, both needs to be used at the same time for it to work.

This mod also works with oculus.

How it works

During the shadow pass, for opaque models, the color of the model won't have any visual change, a blue car and a red car both cast the same shadow, no matter their color. So what this mod does is it prevents things like the text on signs, the banner patterns, the enchantment glint etc from rendering during the shadow pass. It only improves performances when some of those are visibles.

Performance showcase

Small base in a flat world (26.1.2 - 1.0.0)

  • +10% FPS

A lot of signs and banners (26.1.2 - 1.0.0)

  • +50% FPS on average
  • +1000% FPS on 0.05% low
  • The signs have text on them but on the other side

Modpacks

Feel free to use this mod in your modpacks without asking for permission.

Compatibility

Mod Loaders

Fabric Forge Neoforge Quilt

Game Versions

1.20.1 1.21 1.21.1 1.21.2 1.21.3 1.21.4 1.21.5 1.21.6 1.21.7 1.21.8 +7 more

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

As an Amazon Associate I earn from qualifying purchases.

Screenshots

Similar Mods

Included in Modpacks (54)

Most downloaded
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External Resources