Enum DrawOrder 

pub enum DrawOrder {
    Before,
    Sorted(f32),
    After,
}

Where a draw sits in the composite of a pass’s scenes.

Scene::record runs a scene’s draws in the order they are listed and reads none of this. Scene::record_composited groups the draws of all of its scenes: the sequenced ones first in scene order, then the sorted ones of every scene together, ordered back-to-front by their depth, then the trailing ones in scene order.

Variants

Before

Draw in sequence, ahead of the sorted pool. The default: opaque geometry and anything whose listed order is its own business stays exactly where its scene put it.

Sorted(f32)

Join the pass’s depth-sorted pool at depth, measured along the camera’s view axis — Camera::view_depth in unlit3d reports the same quantity: positive into the screen, so the farthest draw sorts first. The pool holds the sorted draws of every scene, which is what lets blended geometry composite by depth instead of by which scene recorded first. A NaN depth is ordered by f32::total_cmp, which places it relative to the finite depths by the sign bit its payload carries; the order is total, so it cannot poison the sort.

After

Draw in sequence, behind the sorted pool: UI and overlays that sit above the sorted draws whatever their depth. Clipped draws belong here too, where nothing unclipped follows them — see DrawEntry::scissor.

Trait Implementations

impl Clone for DrawOrder

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DrawOrder

impl Debug for DrawOrder

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

Formats the value using the given formatter.

impl PartialEq for DrawOrder

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DrawOrder