Optional<T> type, like in Rust about gpuweb

[Kangz]

Can you detail more with WGSL code what the requested feature is? Right now it almost seems like a question about the Rust WebGPU API in wgpu-rs but since you added the WGSL tag maybe it's not that.

[Alphapage]

I confirm it is all about wgsl syntax.
For example, this struct:

struct Modifier {
translation:Option<TranslationParameters>,
rotation:Option<RotationParameters>
}

This is an example which comes to my mind: with an optional field, you don't have to dig into parameters.

[JMS55]

There is no Option in WGSL. You need to represent it yourself, e.g.:

struct Modifier {
  translation: TranslationParameters,
  rotation: RotationParameters,
  has_translation: bool,
  has_rotation: bool,
}

[Alphapage]

Yes, but do you plan to implement such a feature in the future ?

[Kangz]

Most likely not directly. In Rust Option is part of the standard library, and uses lots of features that WGSL doesn't have like generics. There are discussions about maybe adding generics one day but that's very far in the future. Tentatively closing this as not planned.

[Alphapage]

ptr<...> acts like a generic, so I was expecting option<...> could be a valuable feature.
I hope this will be the preferred option ;-) instead of NULL.