# Tests that an SVGFE filter subregion authored inside a scroll frame with an
# external scroll offset is normalized to the same space as the primitives, so
# the green flood (subregion) exactly covers the red SourceGraphic rect. If the
# subregion were not offset to match, the flood would be shifted by 50px and
# red would show through.
root:
  items:
    - type: scroll-frame
      bounds: [0, 0, 100, 100]
      content-size: [100, 1000]
      scroll-offset: [0, 0]
      external-scroll-offset: [0, 50]
      items:
        - type: stacking-context
          bounds: [0, 0, 100, 1000]
          filters:
            - svgfe: SourceGraphic
            - svgfe: flood
              linear: false
              color: green
              subregion: [0, 50, 100, 100]
            - svgfe: compositeover
              linear: false
              subregion: [0, 0, 100, 1000]
              in: 1
              in2: 0
          items:
            - type: rect
              color: red
              bounds: [0, 50, 100, 100]