- Fixed an issue with packaging the project due to missing #if WITH_EDITOR.

- Significantly improved performance of GPULineActor demo case by not initializing arrays to 0.
- Added further scoped stats for performance review.

InstancedMeshLines/Plugins/InstancedMeshLineRendering/Source/InstancedMeshLineRendering/Private/GPUInstancedLineComponent.cpp

@@ -181,6 +181,7 @@ void UGPUInstancedLineComponent::PostInitProperties()
 
 }
 
+#if WITH_EDITOR
 void UGPUInstancedLineComponent::PostEditChangeChainProperty(FPropertyChangedChainEvent& PropertyChangedEvent)
 {
 	if (PropertyChangedEvent.Property != NULL)
@@ -222,6 +223,7 @@ void UGPUInstancedLineComponent::PostEditChangeChainProperty(FPropertyChangedCha
 	}
 	Super::PostEditChangeChainProperty(PropertyChangedEvent);
 }
+#endif
 
 // Doesn't do anything yet, just as a testing function to see execution order on Unreal startup.
 void UGPUInstancedLineComponent::PostLoad()
@@ -797,16 +799,24 @@ bool UGPUInstancedLineComponent::UpdateLinesDataDirectly(int32 LineIdStart, TArr
 
 	if (LineIdStart + Points.Num() > LinearLineData.Num())
 		return false;
-
+	{
+		TRACE_CPUPROFILER_EVENT_SCOPE(TEXT("UGPUInstancedLineComponent::UpdateLines - Memcopy LinearLineData"))
 		FMemory::Memcpy(LinearLineData.GetData() + LineIdStart, Points.GetData(), Points.Num() * sizeof(FVector4));
+	}
 	const int32 X = LineIdStart % TextureWidth;
 	const int32 Y = LineIdStart / TextureWidth;
-
+	TArray<FVector4>* TextureData;
+	{
 		// Copy for now
-	TArray<FVector4>* TextureData = new TArray<FVector4>(MoveTemp(Points));
+		TRACE_CPUPROFILER_EVENT_SCOPE(TEXT("UGPUInstancedLineComponent::UpdateLines - MoveTemp Texture Data"))
+		TextureData = new TArray<FVector4>(MoveTemp(Points));
+	}
 	int32 NumberOfRegions = 0;
-	const FUpdateTextureRegion2D* Regions = CalculateTextureRegions(FIntPoint(X, Y), TextureData->Num(), NumberOfRegions);
-
+	FUpdateTextureRegion2D* Regions;
+	{
+		TRACE_CPUPROFILER_EVENT_SCOPE(TEXT("UGPUInstancedLineComponent::UpdateLines - Calculate Texture Regions"))
+		Regions = CalculateTextureRegions(FIntPoint(X, Y), TextureData->Num(), NumberOfRegions);
+	}
 	PositionTexture->UpdateTextureRegions(0, NumberOfRegions, Regions, TextureWidth * sizeof(FVector4), sizeof(FVector4), (uint8*)TextureData->GetData(),
 		[](auto InTextureData, auto InRegions)
 	{

InstancedMeshLines/Plugins/InstancedMeshLineRendering/Source/InstancedMeshLineRendering/Public/GPUInstancedLineComponent.h

@@ -106,7 +106,10 @@ protected:
 	virtual void BeginPlay() override;
 
 	virtual void PostInitProperties() override;
+#if WITH_EDITOR
 	virtual void PostEditChangeChainProperty(FPropertyChangedChainEvent& PropertyChangedEvent) override;
+#endif
+
 	virtual void PostLoad() override;
 	virtual void OnComponentCreated() override;
 	virtual void BeginDestroy() override;	

InstancedMeshLines/Source/InstancedMeshLines/Private/GPULineActor.cpp

@@ -30,7 +30,7 @@ void AGPULineActor::BeginPlay()
 	const uint32 MaxLines = Lines;
 	const uint32 MaxSegments = Segments;
 	TArray<FVector> Points;
-	Points.SetNumZeroed(MaxSegments + 1);
+	Points.SetNumUninitialized(MaxSegments + 1);
 	
 	for(uint32 i = 0; i < MaxLines; ++i)
 	{
@@ -65,8 +65,10 @@ void AGPULineActor::Tick(float DeltaTime)
 		}
 
 		TArray<FVector4> Points;
-		Points.SetNumZeroed(MaxLines * (MaxSegments + 1));
-
+		{
+			TRACE_CPUPROFILER_EVENT_SCOPE(TEXT("ABasicLineActor::Tick - InitArray"))
+			Points.SetNumUninitialized(MaxLines * (MaxSegments + 1));
+		}
 		const float TotalTime = UGameplayStatics::GetTimeSeconds(GetWorld()) * 0.1;
 		const int32 NPoints = GPUInstancedLineComponent->GetNumberOfPointsInLine(0);