Struct FenceSync 

pub struct FenceSync { /* private fields */ }

A GPU fence for synchronizing compute and render work.

Insert a fence after issuing GPU commands; then poll or wait for it to determine when the GPU has finished processing those commands.

Implementations

impl FenceSync

pub fn new() -> Self

Create a new fence (not yet inserted).

pub fn insert(&mut self, gl: &Context)

Insert a fence into the GL command stream.

pub fn poll(&mut self, gl: &Context) -> FenceStatus

Poll the fence without blocking. Returns current status.

pub fn wait(&mut self, gl: &Context, timeout: Duration) -> FenceStatus

Wait for the fence with a timeout. Returns status after wait.

pub fn wait_forever(&mut self, gl: &Context) -> FenceStatus

Block until the fence is signaled (infinite wait).

pub fn status(&self) -> FenceStatus

Current status (may be stale — call poll() to refresh).

pub fn is_signaled(&self) -> bool

Whether the fence has been signaled.

pub fn elapsed_since_insert(&self) -> Option<Duration>

How long ago the fence was inserted (wall-clock, not GPU time).

pub fn destroy(self, gl: &Context)

Destroy the fence.

Trait Implementations

impl Default for FenceSync

fn default() -> Self

Returns the “default value” for a type.