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The Iris Project

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The Iris Project

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

Join

nebula

4/29/2025

annoying/wacky fps with REI

https://spark.lucko.me/FWQav2hRdt https://streamable.com/eguw60 Whenever I have the gui of REI up the fps of my game goes really realy low without actually affecting the count, the only noticeable change i see is GPU usage. this is also noticeable without shaders, going from 5-15%, instantly to 35+ but no real FPS issues. There is a possible mod compatibility issue but im genuinely not sure what it could be, I tested my fps using only REI, sodium, dynamic fps, (and dependencies) and the issue was not there (at least i dont think i noticed it, maybe didnt test it enough.) Another weird thing is that when my game isnt focused (and i have dynamic fps turned off) the fps of my game is normal. Another thing, when on lower tiers of shaders (ex: potato complementary unbound) the problem is not as noticeable but still a big gpu usage bump. Not sure what else to add, if i need to provide more information, let me know....

hums

4/29/2025

Crash on world load

https://github.com/IrisShaders/Iris/issues/2730 heres the github post i made on the Iris Issue Forum, ill ask here aswell so i can get the fix quicker, please help my issue.

Solution:

that version of better clouds is ancient. Try updating to 1.3.21

JesusLovesYou

4/28/2025

Error in certain shaders

I was playing in pojavlauncher using a modpack, so i tried using some shaders. But then i used these shaders: Kappa Photon Complementary Unbound And Reimagined...

USEC_Pilot

4/28/2025

Unable to load multiple shaders

I am using a hmcl launcher on a mac m1 with the version java 1.20.1 fabric. I tried loading different shaders like bsl and stuff but the only thing i got to work is photon v1. Even then the photon shader only works in the nether and the end. When loading shaders in the overworld I get messages saying "Iris encountered an issue loading the shader."

bhicken sandwich

4/27/2025

my installer keeps getting turned into a windows media file

whenever i try to install the iris installer it gets turned into a windows media file can someone help me out?

Cristelknight

4/27/2025

Backgrounds turns black when in options

After a short period of time the background gets black. Disabling and Reenabling shaders fixes it for a short period of time. (As shown in the video). Problem is persistent in every config screen except the Iris Shader configuration screen. Original Mods: AmbientSounds Auto HUD...

m0sifer

4/26/2025

Strange FPS behavior

https://spark.lucko.me/HnebHTCBjf When I play Minecraft, in-game, my displayed FPS drops to 1-2 when I open menus. Be it crafting tables chests, inventory, or the pause menu. What's baffling is that this behavior is only seen when Minecraft is the focused application. I/E IT drops to 1-2 FPS in menus while Minecraft is in focus. When I pull up a different program above minecraft, it returns to the normal FPS....

Solution:

Hm try restoring default settings?

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.

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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!