vapor_vhs

The VHS tape treatment over REVOLUTION's dream plaza. Six artefacts stack in one pass: head-switch tearing on rare scanline triplets, a luma band rolling slowly up the frame, RGB separation that widens inside that band, scanlines, film grain, and bright dropout specks.

intensity scales every artefact together, and below 0.005 the pass returns the scene untouched. Time comes from engine.time.x, so the tape keeps rolling independently of the shot clock.