A wall of conflagration: embers erupt from a row of fire sources strung edge to edge across the frame, overlapping into one continuous sheet of flame ripped upward by an updraft that flickers in time and undulates across the wall, torn sideways into licking tongues by heavy curl-noise turbulence. Each particle’s remaining life is its temperature — blowing out white-hot, cooling through blazing yellow and orange to deep smouldering red — while soft glowing sprites stacked with additive blending pile the base into a searing, bloom-bright core.