pub fn backdrop_quad(
min: Vec2,
size: UVec2,
outset: u32,
clip: Option<Rect>,
) -> Option<ClippedQuad>Expand description
The backdrop quad’s clipped geometry: the UN-inflated border box
(min + outset .. min + size − outset) with UVs relative to the
INFLATED snapshot — frost never paints in the outset ring, but its blur
was computed with real neighborhood. None = fully clipped away (or a
degenerate box), draw nothing.