make vector and scalar traits imply Send + Sync + 'static

[Firestar99]

This makes the traits VectorOrScalar, Vector, Scalar and image::params::SampleType implicitly be Send + Sync + 'static. This has always been true for all impl anyway, and as these are all sealed traits, this change is not breaking.

This mostly helps me with my bindless API where I always have to do Generic: SampleType + Send + Sync + 'static and now I can just do Generic: SampleType.

[eddyb]

Would it make sense to also throw in Copy? (I can't think of a lot of other traits, maybe PartialEq but ehhh).

Oh, actually:

rust-gpu/crates/spirv-std/src/scalar.rs

Lines 11 to 12 in 8788f92

	pub unsafe trait Scalar:
	VectorOrScalar<Scalar = Self> + Copy + Default + crate::sealed::Sealed

So that confirms my expectation that Copy should be included. Can you also add Send + Sync + 'static to that trait?

Also, why is this trait not actually sealed the same way the Scalar trait is? Maybe leftover from the glam days? (unless it was sealed and that got undone)

[eddyb]

Oops I missed the VectorOrScalar<Scalar = Self> that trait Scalar requires.

In that case, can you just move Copy from Scalar to VectorOrScalar?

[Firestar99]

I added that trait so likely I just forgot Actually trait Vector is not sealed, only Scalar is