Enum ResourceState 

pub enum ResourceState {
    Undefined,
    Read,
    Write,
}

Coarse per-resource state used by the barrier deriver. The executor maps each to the backend’s concrete state: for Vulkan a VkImageLayout + VkAccessFlags pair, for DirectX a D3D12_RESOURCE_STATES, for Metal mostly a no-op except useResource on the ICB-driven cull pass.

Variants

Undefined

Initial state before any pass uses the resource. Reading from Undefined is a compile error (a read with no producer); writing to it is always legal and transitions the state to a writer variant below.

Read

A pass reads the resource (sampled texture, uniform / SSBO, indirect-args buffer, depth read, …). Multiple consecutive reads are coalesced: they don’t insert barriers between themselves.

Write

A pass writes the resource (render target, depth-stencil target, storage write, blend write). A second write after a read inserts a Write→Read→Write barrier chain; consecutive writes by the same pass do not, but consecutive writes across passes do.

Trait Implementations

impl Clone for ResourceState

fn clone(&self) -> ResourceState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ResourceState

impl Debug for ResourceState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ResourceState

impl PartialEq for ResourceState

fn eq(&self, other: &ResourceState) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ResourceState