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# 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