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Disable camera on window close (#8802)
# Objective - When a window is closed, the associated camera keeps rendering even if the RenderTarget isn't valid anymore. - This is essentially just wasting a lot of performance. ## Solution - Detect the window close event and disable any camera that used the window has a RenderTarget. ## Notes It's possible a similar thing could be done for camera that use an image handle, but I would fix that in a separate PR.
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1 changed files with 15 additions and 3 deletions
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@ -31,12 +31,24 @@ impl Node for CameraDriverNode {
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world: &World,
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) -> Result<(), NodeRunError> {
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let sorted_cameras = world.resource::<SortedCameras>();
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let windows = world.resource::<ExtractedWindows>();
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let mut camera_windows = HashSet::new();
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for sorted_camera in &sorted_cameras.0 {
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if let Ok(camera) = self.cameras.get_manual(world, sorted_camera.entity) {
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if let Some(NormalizedRenderTarget::Window(window_ref)) = camera.target {
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camera_windows.insert(window_ref.entity());
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let Ok(camera) = self.cameras.get_manual(world, sorted_camera.entity) else {
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continue;
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};
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let mut run_graph = true;
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if let Some(NormalizedRenderTarget::Window(window_ref)) = camera.target {
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let window_entity = window_ref.entity();
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if windows.windows.get(&window_entity).is_some() {
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camera_windows.insert(window_entity);
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} else {
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// The window doesn't exist anymore so we don't need to run the graph
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run_graph = false;
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}
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}
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if run_graph {
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graph.run_sub_graph(
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camera.render_graph.clone(),
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vec![],
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