Copyright © 2026 Unity Technologies
Prevents Unity from subdividing areas of the terrain not visible to the camera. Adds a manual override for the minimum amount of terrain subdivision for use in cases that off-camera terrain needs to be a higher resolution (for shadowmaps etc).
Terrain: Fixes excessive CPU use with terrains when using a narrow field of view. Adds a new 'heightmapMinimumLODSimplification' property to terrains to set the minimum level of detail required on a terrian.
This bug has been addressed in Unity 2023.1 onwards. Unfortunately the nature of the fix involves a change in the behavior of terrain that could require some user intervention. As such it does not seem like a good candidate for backporting to an LTS release.
This bug has been addressed in Unity 2023.1 onwards. Unfortunately the nature of the fix involves a change in the behavior of terrain that could require some user intervention. As such it does not seem like a good candidate for backporting to an LTS release.
Reproduction steps:
1. Open the "TerrainZoomTest.zip" project attached by the user
2. Open the "ZoomTest2Scene" Scene
3. Open the Profiler as a standalone process (Window > Analysis > Profiler (Standalone Process))
4. Enter Play Mode
5. In the Hierarchy, select the "Main Camera" GameObject
6. In the Inspector, set the "Field of View" property to 1
7. Observe the Profiler
Expected result: "CullScriptable" process time is not significantly increased
Actual result: "CullScriptable" process time significantly increased
Reproducible with: 2019.4.29f1, 2020.3.14f1, 2021.1.15f1, 2021.2.0b4, 2022.1.0a2
Issues you vote on will appear here