There, you can set a minimum and maximum draw distance from the camera (in Unreal Units) for which this Actor should be rendered. Distanceĭistance culling methods, like per-Actor settings and Cull Distance Volumes, render or don't render Actors based on the Actor's distance from the camera.Įach Actor in the level has its own settings for draw distance that can be set using the Details panel.
If your project has a lot of Actors this can come at a cost to GPU performance, especially in instances where there are a lot of Actors visible within the scene view. Unreal Engine uses View Frustum culling and Hardware Occlusion Queries (Dynamic Occlusion) by default for any project. Alternatively, in the Skeletal Mesh Editor you can select Character > Bounds and in the Static Mesh Editor, select Bounds in the main toolbar.
Visualize bounds of Actors in the Level Viewport by selecting Show > Advanced > Bounds. On the other hand, the bounding box is a closer match to the shape of the object and provides more accurate results. The bounding sphere is used for fast collision detection with a simple distance test, and, more often than not, it's greater in size than the object it contains. The bounds of an Actor is made up of two parts: a sphere and a box. Testing Visibility with an Actor's BoundsĮach Actor placed in a Level has a set of bounds using a box and a sphere that is used for various things in the Engine. One of those being specifically to test whether an it is visible or not. Unreal Engine 4 provides a number of culling methods, each with their own advantages and disadvantages where some are available for specific platforms.įor additional information, see Culling Methods below.
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