Constant MORPH 

pub const MORPH: u32 = _; // 8_388_608u32

The wire morphFilter value → MorphInput (the morph resolver’s and the morph transition channel’s target; see crate::filters morph). Composite-side only, like [Self::BACKDROP]: a morph delta re-stages the blend pass and never dirties the capture itself — the key-change re-capture is pushed precisely by the transition channel. The apply_transition stamp site fires on TRANSITION | MORPH so a morph-only delta still reaches the transition engine.