URP Terrain Shader 4+ Layers Issue
Under Audit
Unity 2021.3.x - Unity 6.0.x
Published 7 days ago
When extending a URP Terrain shader graph to include more than four layers, the terrain can unexpectedly render as black, despite documentation suggesting support for additional render passes.
When attempting to implement more than four layers within a URP Terrain shader graph, the terrain unexpectedly renders as black. Unity documentation suggests that the URP is not limited by the number of layers and can be extended with additional render passes. However, available examples and forum discussions predominantly feature four-layer configurations. Attempts to increase the layer count, such as adjusting the texture layer index for the fifth layer from 0 to 4, do not resolve the issue, consistently resulting in a black terrain.
- Verify the
Texture2DArrayasset used in your shader graph has enough slices to accommodate all desired terrain layers. - Confirm that your custom
Shader Graphis correctly configured to useadditional render passesorSubGraphsfor blending textures beyond the initial four layers, as indicated in documentation. - Examine the
Universal Render Pipeline Assetsettings in your project to ensure no limitations or specific configurations prevent extended terrain layer rendering.
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Content inspired by a Unity discussion post.