# Objective - Currently bevy's ui layout system could takes a long time. ## Solution - cache `default_ui_camera `entity to avoid repetitive lookup ## Performance cargo run --release --example many_buttons --features bevy/trace_tracy  |
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| .. | ||
| layout | ||
| render | ||
| widget | ||
| accessibility.rs | ||
| focus.rs | ||
| geometry.rs | ||
| lib.rs | ||
| measurement.rs | ||
| node_bundles.rs | ||
| stack.rs | ||
| texture_slice.rs | ||
| ui_material.rs | ||
| ui_node.rs | ||
| update.rs | ||