This tutorial will detail how to use Hierarchical Level of Detail (HLOD) in different versions of Unreal Engine (4.20-4.24, 4.25-4.26, 5.2). Note that the method of using HLOD may vary in each version.
1. Pre-generated LOD
Step 1: Pre-generate LOD Open UE4.21, click the static mesh you want to generate LOD in the Content Browser (content browser).
Step 2: In the Static Mesh Editor, find the LOD Settings in the Details Panel.
Step 3: In the LOD settings, click on the "+" symbol to add a new LOD level.
Step 4: Select the newly generated LOD level and adjust its Screen Size and Percent Triangles parameters to suit your needs.
Step 5: Click the "Auto LOD" button to generate LOD.
2. Turn on HLOD
Step 1: Open WorldSetting, open HLOD, set HLODSetup, and generate Cluster
Step 2: Open the HLOD panel
Step 3: Click according to the figure to generate
Note: In some versions, the following errors may occur:
If it is only used on the PC side, continue to click ForceBuild
Step 4: In the view window, select HLOD to view, the angle of view changes from near to far, and the HLOD models of different colors will be displayed and hidden in real time.