# An anti-aliased rect inside a reference frame whose origin is fractional in
# the coordinate space of a scaled ancestor: origin (0.1, 0.1) under a
# scale(250) frame, so the rect lands on device pixel 8 + 250 * 0.1 = 33.
# The origin must be used exactly. Quantizing it in local units (1/128 of a
# local unit is 0.39 device pixels here) shifts the rect off the pixel grid
# and its edges come out anti-aliased instead of crisp.
---
root:
  items:
    - type: rect
      bounds: [0, 0, 300, 300]
      color: white
    - type: reference-frame
      bounds: [8, 8, 2, 2]
      transform: scale(250, 250)
      transform-origin: [0, 0]
      items:
        - type: reference-frame
          bounds: [0.1, 0.1, 0.8, 0.8]
          items:
            - type: rect
              bounds: [0, 0, 0.8, 0.8]
              color: blue
              antialiased: true