Enum SurfaceAlphaRequest 

pub enum SurfaceAlphaRequest {
    Opaque,
    TranslucentPreferred,
}

What a caller wants of the surface’s alpha, expressed without naming a wgpu type — the public, platform-independent request a shell makes.

This is a request, not an outcome. A TranslucentPreferred surface on a platform that advertises no translucent composite mode silently resolves opaque; read ConfiguredSurface::resolved_translucent after configuration rather than keying a paint contract off the request, or a hole-punched view presents black rectangles on an opaque swapchain.

Variants

Opaque

An ordinary opaque window: wgpu::CompositeAlphaMode::Auto, whatever the surface reports.

TranslucentPreferred

Prefer a translucent alpha-compositing mode, so content behind the surface shows through where the frame’s alpha is below 1 — the mode a hole-punched native view underneath the frame needs.

Trait Implementations

impl Clone for SurfaceAlphaRequest

fn clone(&self) -> SurfaceAlphaRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SurfaceAlphaRequest

impl Debug for SurfaceAlphaRequest

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

Formats the value using the given formatter.

impl Eq for SurfaceAlphaRequest

impl PartialEq for SurfaceAlphaRequest

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SurfaceAlphaRequest