Enum SurfacePhase 

pub enum SurfacePhase {
    NoSurface,
    SurfaceReady,
    SurfaceLost,
}

Which lifecycle state the surface is in.

Rendering only happens in SurfacePhase::SurfaceReady; the other two phases mean there is no usable swapchain and frames are skipped.

Variants

NoSurface

No surface has been created yet, or the surface was explicitly destroyed.

SurfaceReady

A configured surface is available and frames can be rendered.

SurfaceLost

The surface was lost mid-render (e.g. ERROR_SURFACE_LOST_KHR); it has been dropped and the shell must recreate it via on_surface_created.

Implementations

impl SurfacePhase

pub fn can_render(self) -> bool

Whether a frame may be rendered in this phase.

Only SurfacePhase::SurfaceReady can render; the machine drops frames in every other phase rather than queueing them.

Trait Implementations

impl Clone for SurfacePhase

fn clone(&self) -> SurfacePhase

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SurfacePhase

impl Debug for SurfacePhase

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

Formats the value using the given formatter.

impl Eq for SurfacePhase

impl PartialEq for SurfacePhase

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SurfacePhase