Struct UiAgent 

pub struct UiAgent { /* private fields */ }

The agent responsible for the UI subsystem (LaneKind::Ui).

Holds only its own GORNA / strategy state. The GPU texture atlas and the persistent AssetUUID → AtlasRect cache both live in the UiImageAtlas Resource. Every other dependency (graphics device, render system, font cache, text renderer, per-frame UiScene) is looked up from EngineContext::runtime per frame.

Trait Implementations

impl Agent for UiAgent

fn access(&self) -> AgentAccess

Reads the LaneBus and records its own encoder, but mutates the shared UiImageAtlas (GPU glyph/image uploads). It never touches the World, but the shared-resource write puts it in the SharedWorld tier — the scheduler runs at most one such agent per wave (alongside Isolated agents), so its atlas writes never race another shared-resource writer.

fn deck_writes(&self) -> Vec<TypeId>

Buffers its pass into the [UiPassSlot] deck slot.

fn id(&self) -> AgentId

Returns the unique identifier for this agent.

fn negotiate(&mut self, _request: NegotiationRequest) -> NegotiationResponse

Negotiates with the DCC to determine the best execution strategy given the current global resource constraints and priorities.

fn apply_budget(&mut self, budget: ResourceBudget)

Applies a resource budget issued by the DCC. The agent must adjust its internal logic (e.g., LOD, quality settings) to stay within the allocated limits.

fn on_initialize(&mut self, context: &mut EngineContext<'_>)

Called once after the agent is registered with the DCC.

fn execute(&mut self, context: &mut EngineContext<'_>)

Called every frame by the engine loop.

fn report_status(&self) -> AgentStatus

Reports the current status and health of the agent.

fn as_any(&self) -> &dyn Any

Allows downcasting to concrete agent types.

fn as_any_mut(&mut self) -> &mut dyn Any

Allows mutable downcasting to concrete agent types.

fn execution_timing(&self) -> ExecutionTiming

Declares WHEN and HOW this agent should execute within the frame pipeline.

impl Default for UiAgent

fn default() -> Self

Returns the “default value” for a type.