- Fixed startup crash in packaged build: Apparently UpdateTextureRegions...

- Fixed startup crash in packaged build: Apparently UpdateTextureRegions requires a padded array in packaged, while PIE can deal with an array that's too short...

Source/InstancedMeshLineRendering/Private/GPUInstancedLineComponent.cpp

@@ -62,9 +62,11 @@ void UGPUInstancedLineComponent::UpdateWholeTexture()
 			0,
 			0, FMath::Min(LinearLineData.Num(), TextureWidth), FMath::CeilToInt(static_cast<float>(LinearLineData.Num()) / static_cast<float>(TextureWidth)));
 	
-	// Copy for now 
 	TArray<FVector4>* TextureData = new TArray<FVector4>(LinearLineData);
 
+	// Needed for packaging - works without this in the editor but crashes when packaging.
+	TextureData->SetNumUninitialized(TextureWidth * TextureHeight, false);
+
 	PositionTexture->UpdateTextureRegions(0, 1, Region, TextureWidth * sizeof(FVector4), sizeof(FVector4), (uint8*)TextureData->GetData(),
 		[](auto InTextureData, auto InRegions)
 	{	
@@ -554,19 +556,19 @@ void UGPUInstancedLineComponent::InitializeLinesInBulk(int32 NumberOfLines, int3
 			SetCustomDataValue(InstanceId, 2, Color.B, false);
 			SetCustomDataValue(InstanceId, 3, Width, false);
 			SetCustomDataValue(InstanceId, 4, static_cast<float>(CurrentTextureIndex), false); // Segment Start
-			NewLineArray.Add(TPair<int32, int32>{InstanceId, LinearLineData.Num() + PointIndex});
+			NewLineArray.Add(TPair<int32, int32>{InstanceId, LineIndex * (NumberOfSegmentsPerLine + 1) + PointIndex});
 			CurrentTextureIndex++;
 
 			MoveTextureMarker();
 		}
-		NewLineArray.Add(TPair<int32, int32>{-1, LinearLineData.Num() + NumberOfSegmentsPerLine});
+		NewLineArray.Add(TPair<int32, int32>{-1, LineIndex * (NumberOfSegmentsPerLine + 1) + NumberOfSegmentsPerLine});
 		MoveTextureMarker();
 		CurrentTextureIndex++;
 		NextFreeId++;
 	}
 
+	MarkRenderStateDirty();
 	UpdateWholeTexture();	
-	
 }