# don't assume w=1 when checking if the transform is just a translation --- root: items: - type: stacking-context bounds: [50, 50, 600, 600] perspective: 20 items: - type: stacking-context transform: [1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,2] items: - type: rect bounds: [50, 50, 100, 100] color: red