The performance hit comes from each pixel in the overlap needing to be shaded by multiple sources. As more and more lights begin to overlap, the influenced areas will become red, then white.įigure 3: Light Complexity of multiple point light sources. If we create more point lights in the same area, we begin to see the cost of the overlapping through the visualizer. When we add a point light to the center of the scene, we can see the influence this light has on the complexity of the lighting in the scene. The Light Complexity view shows us how our scene is being lit by our lights, the influence area of those lights, and how much cost to performance they can infer throughout the scene. This documentation doesn’t cover the Texture Streaming Accuracy portion of the Optimization Viewmodes, as they are more relevant to the creation of 3D models, but for information on what they show see Epic's documentation on texture streaming. We will go over them in the order that they appear.įigure 1: Finding the selection of optimization viewmodes. Under this tab is the Optimization Viewmodes section each of these views will help to identify certain optimizations that you can make. You can change the way in which the scene is rendered when editing the project by changing the View Mode within the scene view port. The contents of this guide work for version 4.19 of the Unreal Engine.