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27 lines
903 B
Markdown
Executable File
27 lines
903 B
Markdown
Executable File
---
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title: Subtree Rasterization
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layout: docs
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permalink: /docs/subtree-rasterization.html
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prevPage: layer-backing.html
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nextPage: synchronous-concurrency.html
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---
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Flattening an entire view hierarchy into a single layer improves performance, but with UIKit, comes with a hit to maintainability and hierarchy-based reasoning.
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With all Texture nodes, enabling precompositing is as simple as:
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<div class = "highlight-group">
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<span class="language-toggle"><a data-lang="swift" class="swiftButton">Swift</a><a data-lang="objective-c" class = "active objcButton">Objective-C</a></span>
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<div class = "code">
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<pre lang="objc" class="objcCode">
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rootNode.shouldRasterizeDescendants = YES;
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</pre>
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<pre lang="swift" class = "swiftCode hidden">
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rootNode.shouldRasterizeDescendants = true
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</pre>
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</div>
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</div>
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<br>
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This line will cause the entire node hierarchy from that point on to be rendered into one layer.
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