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Faster Iris Shadow Mapper
ModsJava

Faster Iris Shadow Mapper

by maDU59_ · on Modrinth

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Minecraft version

⬇ Download for 26.2 · Fabric⬇ Download for 26.1–26.1.2 · Fabric⬇ Download for 1.21.11 · Fabric⬇ Download for 1.21.9–1.21.10 · Fabric⬇ Download for 1.21.6–1.21.8 · Fabric⬇ Download for 1.21.5 · Fabric⬇ Download for 1.21.4 · Fabric⬇ Download for 1.21.2–1.21.3 · Fabric⬇ Download for 1.21–1.21.1 · Fabric⬇ Download for 1.20.1 · Fabric⬇ Download for 26.2 · Quilt⬇ Download for 26.1–26.1.2 · Quilt⬇ Download for 1.21.11 · Quilt⬇ Download for 1.21.9–1.21.10 · Quilt⬇ Download for 1.21.6–1.21.8 · Quilt⬇ Download for 1.21.5 · Quilt⬇ Download for 1.21.4 · Quilt⬇ Download for 1.21.2–1.21.3 · Quilt⬇ Download for 1.21–1.21.1 · Quilt⬇ Download for 1.20.1 · Quilt⬇ Download for 26.1–26.1.2 · NeoForge⬇ Download for 1.21–1.21.1 · NeoForge⬇ Download for 1.20.1 · Forge
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Faster Iris Shadow Mapper — screenshot 1

⚠️ 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)

With / Without | 100FPS / 87FPS (avg) | 63FPS / 58 FPS (0.05% low)
With: 100FPS Without: 87FPS

A lot of signs and banners (26.1.2 - 1.0.0)

With / Without | 15FPS / 9FPS (avg) | 10FPS / 1 FPS (0.05% low)
With: 15FPS Without: 9FP

Modpacks

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

Quick facts

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

Verified by MCModsHub

These come from our own check of the pack file, not from the source page.

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