I saw your message but I will answer it here. If that headset only supports Vulkan and Vulkan does not support certain shader options (you say post processing is not supported) then there’s nothing to do about that. I can’t tell why that headset would not support it, seems odd. Google shows some posts on a private group on Reddit which seems to confirm that it isn’t supported. Don’t have access to that group to read the entir eposts.
Well… You might get similar results if you create a cylinder mesh and fake the glow as a volume. there are plenty of ways to do it
Any idea on how to recreate dooms volumetric glow with vertex shader?
faking the lighting as a mesh would create a more cheap effect though, it won’t shine on the environment or do other complex things. It’s what you’d see on older games.