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Subtree Rasterization

Flattening an entire view hierarchy into a single layer improves performance, but with UIKit, comes with a hit to maintainability and hierarchy-based reasoning.

With all Texture nodes, enabling precompositing is as simple as:

[rootNode enableSubtreeRasterization];

rootNode.enableSubtreeRasterization()

This line will cause the entire node hierarchy from that point on to be rendered into one layer.

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