What happened?

If textures have a FabricSkyboxes custom skybox, Complementary shaders cause the skybox to go completely white; rather than showing the correct setting toggle for either the custom or shader skybox.

Screenshots

Relevant log output

No response

Minecraft Version

1.18.1

Iris Version

iris-mc1.18.1-1.2.0-pre.jar

Sodium Version

sodium-fabric-mc1.18.1-0.4.0-alpha6+build.14.jar

Operating System

Windows 10 Home 64bit

What is your GPU?

Intel Iris Xe (built-in), Nvidia GeForce MX350

Java Version

Java 17

Additional context

No response

Does this issue happen on OptiFine with the same skypack?

No.

It appears that the custom skyboxes are being rendered with gbuffers_skytextured as they should be, but Complementary might be handling them oddly. Notably, FabricSkyboxes turns off the alpha test, while Complementary seemingly tries to force stuff in skytextured to have a zero alpha value if the vanilla skybox is disabled?

It's not clear how this is an Iris issue rather than a shader pack issue.