thingy.rs

macro_rules! inner_ptr {
    ($gpuva:expr, $($f:tt)*) 0> ({
        fn uninit_from<T: GPUStruct>(_: &GPUWeakPointer<T>) -> MaybeUninit<T::Raw<'static>> {
            core::mem::MaybeUninit::uninit()
        }
        let tmp = uninit_from($gpuva);
        // ... All the stuff up to and including `inner.offset_from(...)`
        let off = inner.offset_from(...);
        let outer = tmp.as_ptr();
        fn out_from<T: GPUStruct, U>(gpuva: &GPUWeakPointer<T>) -> GPUWeakPointer<U> {
            unsafe{ gpuva.offset(...) }
        }
        out_from($gpuva)
    })
}