Enum Command 

pub enum Command {
    Draw(Box<dyn DrawCommand>),
    Compute(Box<dyn ComputeCommand>),
    ClipPush(PxRect),
    ShapeClipPush(ClipRegion),
    ClipPop,
}

Unified command enum that can represent either a draw or compute operation.

This enum enables the rendering system to process both graphics and compute commands in a unified pipeline, with proper barrier handling for multi-pass rendering scenarios.

Variants

Draw(Box<dyn DrawCommand>)

A graphics rendering command processed by draw pipelines.

Compute(Box<dyn ComputeCommand>)

A GPU computation command processed by compute pipelines.

ClipPush(PxRect)

A command to push a clipping rectangle onto the stack.

ShapeClipPush(ClipRegion)

Pushes a shape clip for this subtree.

ClipPop

A command to pop the most recent clipping rectangle from the stack.

Implementations

impl Command

pub fn downcast_draw_ref<T: DrawCommand + 'static>(&self) -> Option<&T>

Downcasts a draw command when the caller knows its concrete type.

pub fn barrier(&self) -> Option<SampleRegion>

Returns the barrier requirement for this command.

Commands that need to sample from previously rendered content should return a barrier requirement to ensure proper synchronization.

Trait Implementations

impl Clone for Command

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl From<Box<dyn ComputeCommand>> for Command

Automatic conversion from boxed compute commands to unified commands.

fn from(val: Box<dyn ComputeCommand>) -> Self

Converts to this type from the input type.

impl From<Box<dyn DrawCommand>> for Command

Automatic conversion from boxed draw commands to unified commands.

fn from(val: Box<dyn DrawCommand>) -> Self

Converts to this type from the input type.