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With many particle emitters open, perf tanks. Cascade is ticking even if the editor tab is not visible/active, which can cause all sorts of performance issues. Cascade ticks through engine tick, so the only way to properly avoid this is to check for ticking of the viewport widget; added a flag to it to keep track of ticking in the last frame, then checking and clearing that in the Cascade tick function. #codreview nick.atamas dave.ratti [CL 2523454 by Olaf Piesche in Main branch]
92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#include "CascadeModule.h"
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#include "Cascade.h"
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#include "PreviewScene.h"
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#include "Runtime/Engine/Public/Slate/SceneViewport.h"
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#include "CascadePreviewViewportClient.h"
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#include "SCascadePreviewToolbar.h"
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#include "SCascadePreviewViewport.h"
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#include "SDockTab.h"
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void SCascadePreviewViewport::Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime)
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{
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SEditorViewport::Tick(AllottedGeometry, InCurrentTime, InDeltaTime);
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JustTicked = true;
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}
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SCascadePreviewViewport::~SCascadePreviewViewport()
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{
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if (ViewportClient.IsValid())
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{
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ViewportClient->Viewport = NULL;
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}
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}
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void SCascadePreviewViewport::Construct(const FArguments& InArgs)
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{
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CascadePtr = InArgs._Cascade;
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SEditorViewport::Construct( SEditorViewport::FArguments() );
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}
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void SCascadePreviewViewport::RefreshViewport()
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{
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SceneViewport->Invalidate();
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}
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bool SCascadePreviewViewport::IsVisible() const
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{
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return ViewportWidget.IsValid() && (!ParentTab.IsValid() || ParentTab.Pin()->IsForeground());
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}
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TSharedPtr<FSceneViewport> SCascadePreviewViewport::GetViewport() const
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{
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return SceneViewport;
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}
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TSharedPtr<FCascadeEdPreviewViewportClient> SCascadePreviewViewport::GetViewportClient() const
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{
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return ViewportClient;
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}
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TSharedPtr<SViewport> SCascadePreviewViewport::GetViewportWidget() const
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{
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return ViewportWidget;
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}
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TSharedRef<FEditorViewportClient> SCascadePreviewViewport::MakeEditorViewportClient()
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{
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ViewportClient = MakeShareable(new FCascadeEdPreviewViewportClient(CascadePtr, SharedThis(this)));
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ViewportClient->bSetListenerPosition = false;
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ViewportClient->SetRealtime(true);
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ViewportClient->VisibilityDelegate.BindSP(this, &SCascadePreviewViewport::IsVisible);
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return ViewportClient.ToSharedRef();
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}
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TSharedPtr<SWidget> SCascadePreviewViewport::MakeViewportToolbar()
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{
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return
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SNew(SCascadePreviewViewportToolBar)
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.CascadePtr(CascadePtr)
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.IsEnabled(FSlateApplication::Get().GetNormalExecutionAttribute());
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}
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void SCascadePreviewViewport::OnFocusViewportToSelection()
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{
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UParticleSystemComponent* Component = CascadePtr.Pin()->GetParticleSystemComponent();
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if( Component )
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{
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ViewportClient->FocusViewportOnBox( Component->Bounds.GetBox() );
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}
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}
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