The Iris Project

TIP

The Iris Project

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

Join
SKD
SKD
View on Discord
5/18/2025

DOESNT LOAD

The shader doesn't load and it told me to open a link that has this error. "Unexpected error while creating framebuffer: Draw buffers [0, 1, 2, 3] Status: 36054" Pls help me out...
Flambe
Flambe
View on Discord
5/18/2025

Iris Game Crashes

I am trying to add Iris, however every time I run the game it crashes, I don't quite understand if the problem is some mod or Iris, could anyone help me?

crash-report.txt

Anglix
Anglix
View on Discord
5/17/2025

Crashing when importing config files

Hi! im swapping between config files a lot and the game began crashing very frequently, here's the crash log 1.21.5, latest iris version...

crash-2025-05-16_19....

!MlodyyBimba
!MlodyyBimba
View on Discord
5/16/2025

Hi, what should I do if something like this happens when I download the irisshaders and distant hori

Hi, what should I do if something like this happens when I download the irisshaders and distant horizont mod?
No description
cargocat
cargocat
View on Discord
5/15/2025

How would I implement compatibility for Iris with this RenderPipeline

```java public static RenderPipeline LINES_NO_DEPTH = RenderPipeline.builder(RenderPipelines.MATRICES_COLOR_SNIPPET) .withLocation("pipeline/render_outlines") .withVertexShader("core/rendertype_lines") .withFragmentShader(ResourceLocation.fromNamespaceAndPath(XRay.MOD_ID, "frag/rendertype_lines_unaffected"))...
Bawnorton
Bawnorton
View on Discord
5/14/2025

Iris batched entity rendering causing textures generated at runtime to fail to render correctly

I am developing a mod that allows trim model/item textures to be generated at runtime which are then stitched an uploaded, each atlas is given its own render type but when using iris something clearly breaks as the "humanoid leggings" overlay doesn't render in certain scenarios, as shown in the recording. A prior implementation had given each texture (humanoid/humanoid_leggings) it's own atlas and render type which did not have this issue but caused performance issues when too many were in the scene as sorting a lot of render types takes a while. Here's the relevant parts of the mod:...
Raihanshere
Raihanshere
View on Discord
5/14/2025

Crashing entering portals

my game often crashes when entering portals from the nether to the overworld with shaders enabled. in the crash it saves the world data changed in the last 5 mins but not the items that i put in my inventory so i keep losing items.

hs_err_pid22084.log

Jacky Wilds
Jacky Wilds
View on Discord
5/12/2025

Iris + Sodium broken on latest Pixelmon 9.3.0

Mod Loader: Neoforge - 21.1.170 Pixelmon Version: 9.3.0 Iris Version: 1.8.8 Sodium Version: 0.6.13 ...
KevinTheShrimp
KevinTheShrimp
View on Discord
5/10/2025

iris starts not correctly

I have the Version 1.25.5-FB. I play Minecraft over the Feather Client and everytime i activate the mod Iris Shaders in Feather is the game crashing when i start the game.
Distra Slice
Distra Slice
View on Discord
5/8/2025

Bottom of my screen isn't loading the shaders correctly and I don't know why... any advice

Solution:
No description
damian101
damian101
View on Discord
5/8/2025

Installer doesn't display correctly.

I'm on Arch Linux with KDE Plasma. Changing default Java version doesn't help. X11 currently, will try Wayland later. Any ideas why this could be?...
No description
Hypixel
Hypixel
View on Discord
5/7/2025

Z-fighting with iron bars

Not sure if this is because of Iris, but either way: Info: iris-1.7.2+mc1.20.6.jar...
Solution:
No description
Raihanshere
Raihanshere
View on Discord
5/6/2025

shader menu gone

the k hotkey to activate shaders doesnt work either. the only way to activate is to go into the mods menu and iris from there
No description
Chirparu♧
Chirparu♧
View on Discord
5/5/2025

Crash help.

I am once again with the Chisels and Bits mod(Fabric 1.20.1) trying to add shaders. I added all the need mods(from what I understand) and it didn't give me errors until it crashed. "The game crashed: initializing game Error: java.lang.RuntimeException: Mixin transformation of net.minecraft.class_761 failed"...
No description
᲼
᲼
View on Discord
5/5/2025

45-55% FPS Reduction using 1.21.5 compared to 1.21.4

I originally opened this as a bug report on Github, but I'd figure I would also put it here just incase: https://github.com/IrisShaders/Iris/issues/2732 The TDLR though is, fps seems to be around 45-65% of where it used to be in 1.21.4 (performance varries from different specs it seems). This only occurs when a shader is enabled at all, even disabling it (with the hotkey in my case) causes my fps to be normal like how they are in 1.21.4, 3 other people in this thread is having the same issue, and it seems that (if they are to be believed), there are another 8 people having the same issue too that are just casual players. The difference this time (and I will update this in the bug report too later) is that the fabric1.8.12snapshot.jar does not solve this issue, I'm still getting the same FPS loss. This marks the affected versions now to 1.8.10-1.8.12snapshot for 1.21.5....
Chirparu♧
Chirparu♧
View on Discord
5/5/2025

Bit's and Chisels + Shaders

I built a 1.20.1 world using the Chisels and Bits mod + Axiom mod. I finished my build and wish to add a shaderpack to give a better lightning and better feel. I tried Complementary and Sildurs shaderpacks but each time the chiseled blocks turn invisible. I am using 1.20.1 Fabric, Iris, and Sodium. (Currently with Sildurs Shaderpack). I tried Iris Flywheel compat but that gave me a crash error. What else can I try?? Should I just continue without a shaderpack??
Nern
Nern
View on Discord
5/5/2025

Game crashes when joining a world. (1.21.5)

The game crashes whenever I load into a singleplayer world, or into a server, and still does even after reducing my modpack to 5 mods. Just wondering if this is a known bug or if there's a fix.
No description
nick_ninj
nick_ninj
View on Discord
5/4/2025

Won't let me use any of the shaders I tried

When I try to enable a shader I get this and when I click the copy info button from Iris error message my game just crashes and doesn't copy Im on 1.21.1 M4 Mac
No description
DaFUKT
DaFUKT
View on Discord
5/3/2025

Iris doesn't work for 1.21.4 Forge

Hello, I have installed Iris as Optifine would just straight up crash my game. Good news: Iris doesn't crash my game Bad news: It's like Iris doesn't exist in game... I have the file both in the mod folder AND the curseforge folder in their launcher. However it's not there when I launch the game. ...
Solution:
Forge has never and will never be supported. Use neoforge or fabric
No description
FINDERFEED
FINDERFEED
View on Discord
5/3/2025

Night Vision is being ignored if current cameraEntity is not a player while shaderpack is active

Hi! I am developing a mod and i am changing (Minecraft.getInstance().)cameraEntity to my own entity in certain situations. The issue is that i need night vision to work but it just doesn't (with vanilla entities too (when you possess them in spectator mode)). Is there a fix for that, that i can forcefully turn on in code or where should i mixin to tell iris that scene should be rendered like i have night vision (i tried overriding hasEffect in my entity but no result)? Version 1.21.1 NeoForge...
No description
Next