GLSL compilation error on Intel iGPU with Vulkan backend: non-opaque uniforms outside a block #3909

Bug Description

When attempting to run Sodium with Minecraft's experimental Vulkan rendering backend enabled on an integrated Intel Iris X GPU, the game crashes on startup/world load due to a shader compilation error in the block_layer_opaque fragment shader.

Reproduction Steps

Steps to Reproduce:

Enable the experimental Vulkan rendering pipeline in settings.

Launch the game / load a world with Sodium installed.

The game crashes during frame rendering.

Log File

2026-09-12-5.log

Crash Report

https://mclo.gs/Xwgsres

[Render thread/ERROR]: Couldn't compile FRAGMENT shader sodium:blocks/block_layer_opaque: Couldn't parse GLSL: 0:100: error: 'non-opaque uniforms outside a block' : not allowed when using GLSL for Vulkan
[Render thread/ERROR]: Couldn't compile pipeline sodium:pipeline/solid_terrain: fragment shader sodium:blocks/block_layer_opaque was invalid
Caused by: java.lang.IllegalStateException: Pipeline is not valid (may contain invalid shaders?)