Generic exponential history blend for WebGPU -- see HistoryBlendPassGL for the shared rationale/trade-offs (used by both TaaElement and MotionTrailElement).
TaaElement
MotionTrailElement
Resolves the current frame against history.
This frame's resolved HDR texture view (becomes history for the next call), or null if unavailable.
Generic exponential history blend for WebGPU -- see HistoryBlendPassGL for the shared rationale/trade-offs (used by both
TaaElementandMotionTrailElement).