Struct BackdropDraw 

pub struct BackdropDraw {
    pub order: DrawOrder,
    pub bounds: Bounds<ScaledPixels>,
    pub content_mask: ContentMask<ScaledPixels>,
    pub surface_bounds: Bounds<ScaledPixels>,
    pub clip: ContentMask<ScaledPixels>,
    pub corner_radii: Corners<ScaledPixels>,
    pub radius: f32,
    pub opacity: f32,
    pub program: Arc<SceneShaderProgram>,
}

Retained scene description for an explicit framebuffer pass barrier.

Fields

order: DrawOrder

Scene ordering barrier.

bounds: Bounds<ScaledPixels>

Sampling footprint, including the blur halo.

content_mask: ContentMask<ScaledPixels>

Full viewport used to order the pass barrier.

surface_bounds: Bounds<ScaledPixels>

Rectangle receiving the filtered pixels.

clip: ContentMask<ScaledPixels>

Ancestor content clip.

corner_radii: Corners<ScaledPixels>

Clamped surface corner radii in device pixels.

radius: f32

Gaussian support radius in device pixels.

opacity: f32

Filter strength, including element opacity.

program: Arc<SceneShaderProgram>

Immutable shared filter program.

Implementations

impl BackdropDraw

pub fn plan(&self, viewport: Size<DevicePixels>) -> Result<BackdropPlan>

Validate before recording GPU work. The working set is at most 18 MiB across four boundaries (excluding driver and in-flight retention).

Trait Implementations

impl Clone for BackdropDraw

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackdropDraw

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

Formats the value using the given formatter.