Enum GroupEntry 

pub enum GroupEntry {
    Own(Vec<BindingEntry>),
    Layout(BindGroupLayout),
}

One @group(N) slot in a material/compute pipeline layout — position in the Material::entries/ Compute::entries list is its @group(N) index, so there’s no separate group number to keep in sync with the shader by hand: the first element occupies @group(0), the second @group(1), and so on.

Variants

Own(Vec<BindingEntry>)

This material/compute’s own bind group entries — built into a fresh layout internally, and the one group GPUMaterial/ GPUCompute hand to a GPUBindingInstance to bind concrete resources against at draw/dispatch time. At most one Own entry is allowed in a single .entries(...) list — build_material/build_compute panic on a second one, since there’s only one instance-bindable group per material/compute.

Layout(BindGroupLayout)

An already-built layout occupying this position directly — a camera, lights, or any other external bind group layout, e.g. pulled from a GlobalLayoutPool via GlobalLayoutPool::get.