Dynamic terrain texture loading

Unity Engine
1

hi all !

i’ve a monobehaviour script in terrain GameObject. This script load and unload texture, it run but i’ve two problemes :

* first when set the splatprototype of terrain data :

SplatPrototype splat = new SplatPrototype();
splat.texture = m_text as Texture2D;
terrainGameObject.GetComponent<Terrain>().terrainData.splatPrototypes = new SplatPrototype[] { splat };

i obtain an console error :

Do you know why i’ve this error and how to do to fix it ?

* second : i not be abble to unload texture memory :

foreach (SplatPrototype splat in terrainGameObject.GetComponent<Terrain>().terrainData.splatPrototypes) 
                DestroyImmediate(splat.texture, true);
            }
Resources.UnloadUnusedAssets();

after this, the texture has destroyed but, the quantity of busy RAM dont change.
how to do to unload terrain textures ??

can you help me. thx.

2
  1. Managed environments don’t free up their memory immediately, they keep the pool around for reusage unless the system resources are running out so they are forced to hand them back
3

yes i know that, but after few loading/unloading, unity crash → out of memory because the memory of unloaded texture is not free so i think texture is not unloaded…

4

For problem 1 you might just be missing this:

splat.tileSize = new Vector2(x, y);

Works for me

5

first tanks you for your help !

Antitheory sorry, i’ve missing to write on my first post, i set splat tile size and offset :

splat.tileSize = new Vector2(terrainGameObject.GetComponent<Terrain>().terrainData.size.x, terrainGameObject.GetComponent<Terrain>().terrainData.size.z);
splat.tileOffset = Vector2.zero;