About this document
Creating LOD's manually is a tedious task that can be sped up by creating multiple LOD's simultaneously and fully automated thanks to InstaLOD's asynchronous processes.
Creating LOD chains
InstaLOD supports automatic LOD generation for both static and skinned meshes.
To produce an LOD chain, first, create a new mesh operation profile by navigating 'File' -> 'New Profile'. Then double-click the 'Default' entry in the 'Mesh Operations' window and rename it into 'LOD1'. The default mesh operation optimizes a mesh to 50 % of its original polygon count, as viable in the 'Mesh Operation Settings'. By right-clicking the entry in the list and selecting 'Duplicate', a copy named 'LOD1_dupe' is created that contains the same settings. Rename it to 'LOD2' and change its target polygon count to a lower value. This can be repeated for as many LOD entries as necessary.
Finally, 'LOD0' is created by adding another entry and setting 'Percent Triangles' to 100 %. Any input meshes processed by such a mesh operation are be preserved as they are. The entry 'LOD0' can be dragged to the top of the list so that all meshes and LODs are ordered correctly.
To create an LOD Group, move into the 'Profile Settings' where 'LOD Group Settings' can be located. Applying the 'LOD Group Attribute' will enable proper LOD behavior in applications that support it.
In the 'Mesh Operations' window, press 'Start' to run the optimization. Once it's finished, tabs for each LOD entry can be found over the viewport with 'LOD0' being active. When hovering over the tabs, the viewport toggles between the LOD entries. Click on a tab to lock the visibility.
Right-clicking a mesh operation entry allows to duplicate or to delete it. To set up an LOD chain quickly, first, configure the settings of one mesh operation, duplicate it, and only adjust the target polygon count of the copied entries.