Version: Unity 6.7 Alpha (6000.7)
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TerrainData.AlphamapTextureName

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public static string AlphamapTextureName;

Description

The name for the Terrain alpha map textures.

Use this name when you call TerrainData.CopyActiveRenderTextureToTexture, TerrainData.DirtyTextureRegion, TerrainData.SyncTexture, or TerrainCallbacks.textureChanged to identify the Terrain alpha map textures.

Is something described here not working as you expect it to? It might be a Known Issue. Please check with the Issue Tracker at issuetracker.unity3d.com.

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