TIP

The Iris Project

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

Join

TIP

The Iris Project

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

Join

snoodlesoup

4/26/2025

Crashes when having shaders enabled

I've been trying to get shaders to work for a hot minute now since I used to be able to get them to work ok with Optifine but with Iris, I can install it just fine and enable shaders but then when I go to open a world, it crashes immediately. Then when I go to open the game again, it'll crash until I uninstall iris. I recently updated my graphics drivers so that I could even run sodium and iris. I installed everything with Modrinth, I haven't tried manually installing it yet because I wasn't sure if that would even make a difference. If anyone could help me figure out the problem that would be greatly appreciated <3 Here's my latest log: https://mclo.gs/SoOvN6V...

CodeEnder

4/25/2025

java.lang.NoSuchFieldError: TESSELATION_SHADERS

I'm trying to get DH running on Prominence II RPG pack. I'm having the same issue as here but I've already updated sodium, iris, iris compat, and anything else with sodium or iris in the name. Reading through the crash report, nothing jumps out at me so I'm hoping someone here can help.

Van Dake

4/25/2025

Weird behavior with water and glass 1.20.1

My friends and I are playing 1.20.1, using the latest versions for iris and sodium for this version. My graphics cards are updated. And it happens on all shaders. Screenshots are using Complementary Unbound

Your Rhythmate

4/25/2025

GPU load doesn't rise above 20-50%

You know that GPU load needs to be around 100%, but in my case it doesn't happening. Why? i don't know. I can play cyberpunk 2077 on my PC on medium-high settings in 60 fps without any upscaling, but silly block game just don't wanna work properly Iris version? - 1.8.8 Mods? - Fabulously Optimized + Distant horizons GPU? - 1660s...

-Kingsavage-

4/23/2025

IRIS NOT WORKING PROPERLY

OK, so i use lunar, on 1.21.4 i had no issues running any shaders at all, hardware is not the issue in this case and i know this becuase it worked fine previously. Now im on version 1.21.5 using new verions of both Sodium AND Iris. And now anytime i activate my shaders, they artifact and leave outlines of blocks on my screen, everything is hazy and looks like sunshafts cover my screen, its unplayable, i have tried many things to fix it and i have nobody to help me. Is there some new type of sett...

4/23/2025

Iris + Fabric Instant Crash Error Code 1

running windows 10 - trying to get iris working. Worked on its own, tried to get iris + fabric and minecraft crashes before loading with error code 1. iris on its own still works, just the fabric side messing things up. any help appreciated. thank you...

zoya

4/22/2025

iris shaders website issue

so i have a windows and when I tried opening iris it said it couldnt run on my pc.

oxide

4/22/2025

Need help with reflective textures not working properly

I am using 1.20.1 Iris 1.7.6 Sodium 0.5.13 3070ti ...

Pondex🇫🇮 ☦

4/22/2025

Not being able to open iris and sodium etc

Its probably a simple fix but i downloaded java and installed it but jarfix says i dont have it, why is that? Also i wonder how can i get distant horizons on it also if possible.

azula

4/22/2025

[1.21.5] Position Color support not included?

I was unable to submit this to Github so trying here: I was previously using a rendering API for one of my mods that used the old PositionColor program. When they updated their API to 1.21.5, they use a new RenderLayer of the RenderPipelines.POSITION_COLOR_SNIPPET. However, from what I can tell, Iris does not have this implemented into the pipeline. I could be misunderstanding what is going on, but when cloning the repo POSITION_COLOR_SNIPPET does not even exist within the RenderPipelines that was generated/included....

RyanNguQua

4/21/2025

iris bug 1.21.5

Volumetric lighting and TAA is broken in all shaders. Volumetric lighting does not disappear after being rendered (does not disappear after looking away from source), possibly due to TAA?. TAA is broken as it still keeps all temporal pixel data starting from when the shader was enabled instead of removing them, leading to blur and smudging in motion and weird artifacts....

Yasserr

4/21/2025

Shaders not working

When i use shaders it sends an error in the chat .i use iris 1.8.8 and tea shaders .

DragonMoffon

4/20/2025

Instant Crash when using 330 core.

I was following the tutorial in the iris docs, but converted it to using 330 core, and now it crashes on successful load. I only have composite and textured shaders currently.

message.txt

Célestin

4/20/2025

OpenGL 3.2 how to fix crash ?

Hello, I have a crash that occurs when I try to run Oculus (the latest version). With version 1.6.13, I had no problems, but it seems that now you no longer support OpenGL 3.2. How can I fix this problem and be able to play with shaders (as before)? Oculus is the unofficial version of Iris (for Forge), but works in the same principle. The author told us that we should move towards Iris support....

crash-2025-04-20_08....

RADEON

4/19/2025

Iris doesnt want to load any shader

idk why, but it outputs an error into the chat :

net.minecraft.server.ChainedJsonException: Invalid shaders/core/basic.json: Non [a-z0-9/._-] character in path of location: minecraft:basic_tessControl.tcs

my modlist here: https://gnomebot.dev/paste/mclogs/XNNK918...

Solution:

i found the mod that stops the shader from loading

wasd

4/18/2025

Potato Shaders

Im using the correct fabric version and I have Iris and Sodium installed and yet it crashes, why is that?

Solution:

change the 2.13 to 6.7

|Blaz|

4/17/2025

Using iris causes flickering

When i use iris all entities start flickering. Tried different settings (on sodium and Iris), removing all other mods yet no difference. Using sodium itself with other mods is fine but only putting in Iris causes the flickering.

Jax

4/17/2025

Optifine skybox using iris

Iris talks about optifine skyboxes and their ability to use them, how exactly do you do that? i have iris and sodium installed have the skybox in resource pack and i dont know exactly where the compatability comes in

Rentora

4/17/2025

shaderpack failed to load

hey there, i'm using a pretty hefty amount of mods, including distant horizons with photon shaders which are advertized as compatible with distant horizons. i'm using the physics mod as well which can cause some issues with shaders but i've been able to run this mod combination previously without problem. currently about 9/10 times when i open the game i get the message "the shaderpack failed to load! please report the error to the developper" the info included in the message is the following: prepare.vsh: prepare.vsh: 0:38(63): error: `base_color' undeclared 0:38(63): error: type mismatch 0:38(38): error: no function with name 'linear_step' 0:38(34): error: no function with name 'sqr'...

Solution:

update: i just downloaded the latest photon commit from the github page and it works now!

latest.log

Lugubrious_DragonLord(III)

4/16/2025

Null Pointer Exception at startup

Hey, I understand this may not be an Iris issue, but I'm not a shader guy so any help to narrow it down is much appreciated. Here's the error that appears on client startup: ``` [18:25:42] [Render thread/ERROR]: Failed to create shader rendering pipeline, disabling shaders! java.lang.NullPointerException: null at knot/org.lwjgl.system.Checks.check(Checks.java:188) ~[lwjgl-3.3.3.jar:?]...

Gaming

Programming

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!