# Bug 2050216: a semi-transparent multi-stop vertical gradient under a
# mask-forcing clip used to decompose into per-segment quads whose surface
# rects were snapped incorrectly, causing overlap with adjacent segments at
# fractional device boundaries.
#
# Two distinct nested rounded clips are used so the gradient prim needs a mask
# and takes the tiled/indirect quad strategy (the round_out path) rather than
# the single-rounded-clip nine-patch fast path, which does not overlap. The stop
# offsets (36/50/60/65/75% over 311px) land on fractional device rows, which is
# required to trigger the round_out() overlap.
#
# The reference draws the identical gradient with `repeat: true`, which is never
# eligible for the fast-path decomposition and so is always seam-free; the
# gradient spans exactly [0,1] over its bounds, so repeat is visually identical
# to clamp here. The two match only when the clamp gradient also avoids the
# buggy decomposition.
---
root:
  items:
    - type: rect
      bounds: [0, 0, 600, 360]
      color: white
    - type: clip
      id: 2
      complex:
        - rect: [20, 20, 552, 311]
          radius: 12
    - type: clip
      id: 3
      complex:
        - rect: [22, 22, 548, 307]
          radius: 12
    - type: gradient
      bounds: 20 20 552 311
      start: 276 0
      end: 276 311
      stops: [0.0, [0, 0, 0, 0],
              0.36, [0, 0, 0, 0.06],
              0.5, [0, 0, 0, 0.15],
              0.6, [0, 0, 0, 0.3],
              0.65, [0, 0, 0, 0.4],
              0.75, [0, 0, 0, 0.62],
              1.0, [0, 0, 0, 0.9]]
      clip-chain: [2, 3]