Struct re_renderer::wgpu_resources::static_resource_pool::StaticResourcePool

pub(super) struct StaticResourcePool<Handle: Key, Desc, Res> {
    resources: RwLock<SlotMap<Handle, StoredResource<Res>>>,
    lookup: RwLock<HashMap<Desc, Handle>>,
    pub current_frame_index: u64,
}

Generic resource pool for all resources that are fully described upon creation.

This implies, a resource is uniquely defined by its description. We call these resources “static” because they never change their content during rendering. However, the description may be respect to indirect changes which may to recreation of a resource. The prime example of this is shader reloading:

• The resource is semantically the exact same despite having a different wgpu resource.
• We do not want its handle to change.

Fields

resources: RwLock<SlotMap<Handle, StoredResource<Res>>>

lookup: RwLock<HashMap<Desc, Handle>>

current_frame_index: u64

Implementations

impl<Handle, Desc, Res> StaticResourcePool<Handle, Desc, Res>

where Handle: Key, Desc: Debug + Clone + Eq + Hash,

pub fn get_or_create<F: FnOnce(&Desc) -> Res>( &self, desc: &Desc, creation_func: F ) -> Handle

pub fn recreate_resources<F: FnMut(&Desc) -> Option<Res>>( &mut self, recreation_func: F )

pub fn resources(&self) -> StaticResourcePoolReadLockAccessor<'_, Handle, Res>

Locks the resource pool for resolving handles.

While it is locked, no new resources can be added.

pub fn num_resources(&self) -> usize

Trait Implementations

impl<Handle: Key, Desc, Res> Default for StaticResourcePool<Handle, Desc, Res>

We cannot #derive(Default) as that would require Handle/Desc/Res to implement Default too.

fn default() -> Self

Returns the “default value” for a type.