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The Iris Project

This server is all about the development and community around Iris Shaders!

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The Iris Project

This server is all about the development and community around Iris Shaders!

Join

the man man man man man man man

6/23/2025

cant launch unless i remove iris from the mods folder on 21.4 (help)

hi guys i try to launch the game but it doesnt work unless i remove it from the mods folder. when i try to launch it gives it says this

Solution:

You need to update sodium

xin wolfthorn

6/23/2025

iris not showing shader packs when clicking the iris tab with some mods

minecraft 1.21.1 and neoforge 21.1.179 i'm putting together a modpack for my server and it seems some mods when ia dd then, going into sodium and selecting the iris tab to see shader packs, shows a blurred screen.. when you hit f1 i see the screen unblur and i see the shader packs for a brief second then goes clear screen again...

Solution:

Disable background blurring in Minecraft accessibility setting.

moon991

6/22/2025

Minecraft doesnt load into my world unless i turn iris off, any help?

I get on until the loading screen and then it just shuts down, my crash dec told me its iris but im not sure whats causing it 😦 How do i fix it?

Lunarwolf

6/22/2025

game stays on loading terrain when launching any world

i just set up iris and sodium with fabric, and I cannot load any worlds. minecraft 1.21.6. launcher logs attached is an image of where I put the files. let me know if more information is needed

Solution:

Have you tried using a different shaderpack? The one you’re using is old

Zero

6/21/2025

When enabling shaders it crashes

without shaders the game runs normally. but when i enable shaders the game freezes and then it goes to the launcher and says. "The game crashed: unexpected error. Error: java.lang.AssertionError: Can't." and at the bottom it says "Exit code -1" This problom keeps happening, and i am wondering why.

♡Vera♡

6/21/2025

Shader Pack having no color textures, and motionblur showing some sort of color but in a hazy way.

This only happens in 1.21.5, Tested it on 1.21.4 and it was completely fine. Genuinely confused why this is happening. Shader pack: CH Motion...

Dessiah

6/20/2025

TESSELATION SHADERS

Hi. I was playing a minecraft with Iris + Sodium for better view. The shaders seemed to work without any major issues before. But suddenly the game crashed and I played the game with Iris disabled. But I really wanted to use the shaders,,, After doing some tests I realized that the shaders were the reason for the constant crashes. I tried everything I could. I tested by adding and removing all shader files one by one to see if it was a problem with a specific shader, and all shaders crashed. After reading a reddit that said it could be a problem with sodium dynamic lights and shaders, I tried turning off the dynamic lights and applying the shaders. But it crashed again. So does anyone know how to fix this issues?? T^T...

Solution:

update iris flywheel compat

crash-2025-06-20_15....

monksthemonkey

6/20/2025

what this

complimentary

AutisticToast :3

6/19/2025

Game crashes on world load

game will immediately crash on world load with shaders enabled crashlog provided...

message.txt

Devachino

6/18/2025

game crashes on world load

game loads a couple chunks and then closes giving exit code -1

loya

6/18/2025

Legacy Launcher

I play on legacy launcher can anyone guide me on how to install iris please?

sammy2188

6/18/2025

Could not initialize class net.irisshaders.iris.pathways.FullScreenQuadRenderer

Crash to desktop when loading into a world with Iris Shaders already turned on. Minecraft 1.21.1 - Neoforge 21.1.180 I tried doing binary search on my mods to find the culprit but so far its a select few mods that crash the game and with every change I do with a mod the frequency of these crashes are inconsistent. ...

Solution:

Nice so it is ProbeJS! Neat™! Thank you lots, It just seemed so random when I kept turning off and on mods but I guess in hindsight I prob should've noticed it....

crash-2025-06-17_16....

Ayden

6/17/2025

iris having issues upon loading into the world

I'm not sure what the issue is, but whenever me or anyone else attempts to use iris on my server, the shaders don't load, and we get the foloowing error message, net.minecraft.class2973: Invalid shaders/core/basic.json: Non [a-z0-9.-] character in namespace of location: <iris shaderpack shaders>:basic

Eccoplays123

6/14/2025

Entity model Bugs including hanf

Can you guys help me with this the mob dropped blocks and hand is bugging and Idk what is the cause i dont have resources packs installed just the fabric api sodium and iris

empty

6/13/2025

low fps on pretty pc

hey, i have 4060 8GB, Ryzen 5 5600, 16GB RAM, everything on SSD. Played BetterMC + Complementary on 1650 and got ~60 fps avg, switched on 4060 and still getting ~60 fps. Tried to build a new modpack like vanilla, installed complementary and having poor fps. setted minecraft to get 7-9 GB Ram, still having poor fps... Dunno what's wrong so please help....

avockadic1

6/12/2025

loading textures

if I try to play with iris then my screen freezes while loading textures and resource packs (maybe the problem is just in the mods and I have a lot of them)

Gr1nner

6/12/2025

Visual bug [im not sure how to explain this]

So bassicly particles, water, portals and glass is like this. Its only a visual bug but im not sure how to fix it. i tried changing shaders but its always the same BTW: I am using sodium but its gotta be on so i cannot remove it...

Solution:

Oh wait NVM i had to remove "Hold my items" mod

buh

6/10/2025

Minecraft stuck on loading screen

When i disable iris it works flawlessly but when its enabled it just does not want to load I'm using 1.20.1...

Ooth

6/10/2025

Whole PC lags when opening a GUI

Whenever I open any GUI in game, a chest, settings, etc, my whole pc lags up. The game is otherwise running at a steady 100fps with no drops in performance. I've allocated 18G of ram but it's only using half of that. I'm also running ~150 mods but it doesn't seem to have an affect on it, as the lag occurs when just running Sodium and Iris. It only occurs inside a game, not on the menu screen....

Dh'oine (SaiyRaw)

6/8/2025

Bliss not compiling

I tried 3 versions of Bliss (a fork, modrinth, dev) yet it can't seem to work with distant horizon. Distant Horizon ; 2.3.2b Iris : 1.8.8 Sodium : 0.6.13...

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The Iris Project

This server is all about the development and community around Iris Shaders!

The Iris Project

This server is all about the development and community around Iris Shaders!