Trait PresentObserver 

pub trait PresentObserver: Send {
    // Required methods
    fn before_present(&mut self, surface: &Surface<'static>);
    fn after_present(&mut self, surface: &Surface<'static>);

    // Provided method
    fn before_reconfigure(&mut self, _surface: &Surface<'static>) { ... }
}

Platform code the present thread runs around every present to a surface, for what only the platform can do with its swapchain, such as asking the display when earlier frames reached the screen.

Required Methods

fn before_present(&mut self, surface: &Surface<'static>)

Runs just before surface presents a frame.

fn after_present(&mut self, surface: &Surface<'static>)

Runs just after surface presented it.

Provided Methods

fn before_reconfigure(&mut self, _surface: &Surface<'static>)

Runs before surface is configured anew, while its current swapchain still stands. Does nothing unless the platform needs it to.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors