Setting splatmap resolution during runtime (control texture resolution)

Hi all,

I cannot find a way of setting the resolution of the splatmap through script. (control texture resolution)
I tried initializing a float array upon starting the game but the terrain only accepts what has been set in editor.

Any ideas?

Thanks!

Code (csharp):

1. // control texture res set to 1024 or 256 in ui
2.  
3. float[,,] splatMapData = new float[512, 512, 3];
4. terrain_trn.terrainData.SetAlphamaps(0,0, splatMapData); // either remains at 1024 or out of bounds

 

TerrainData.alphamapResolution