Brandon DeRosier 1e84362601 [Impeller] Implement draw order optimization. (flutter/engine#54067)
For each clip scope, draw opaque items in reverse order and
translucent/backdrop-independent items in their original order
afterwards. Clips are treated as translucent by the parent scope.

Respects clips, subpass collapse, and the clear color optimization.
2024-07-25 17:48:36 -07:00
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