koobas.hobune.stream
Efficiently change many terrains' textures at once?
I have many terrain tiles in my scene that I want to be able to toggle between different styles of textures. Initially I was just looping through the terrains and setting the diffusetexture of the terrainlayer. This caused a hitch that was unacceptable for a VR application. I tried a few other things, unsuccessfully. Right now I have it running the loop through a coroutine to spread out the load over a few frames. This works, but I would like to have all of the textures change at once. Any tips?
you do not need to loop through the terrains. Just put your TerrainLayers from the Asset Folder in to an Array and change the Textures via Code.
for Example =>
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class TerrainLayerTexturesChange : MonoBehaviour
{
public TerrainLayer[] TerrainLayers;
public Texture2D[] diffuseTextures;
public Texture2D[] normalMapTextures;
public void ChangeTextures(){
if(TerrainLayers.Length == diffuseTextures.Length && TerrainLayers.Length == normalMapTextures.Length){
for(int i = 0; i<TerrainLayers.Length;i++){
TerrainLayers[i].diffuseTexture = diffuseTextures[i];
TerrainLayers[i].normalMapTexture = normalMapTextures[i];
}
}
}
}
Or working with Structs
public class TerrainLayerTexturesChangeWithStructs : MonoBehaviour{
[System.Serializable] public struct CustomTerrainLayers{
[SerializeField] public TerrainLayer MyTerrainLayer;
[SerializeField] public LayerTexture[] LayerTextures;
[SerializeField] [HideInInspector] public LayerTexture OriginalTextures;
}
[System.Serializable] public struct LayerTexture{
[SerializeField] public Texture2D DiffuseTexture;
[SerializeField] public Texture2D NormalMapTexture;
}
public CustomTerrainLayers[] TerrainLayers;
public int TextureIndex = 0;
void OnEnable(){
for(int i = 0; i<TerrainLayers.Length;i++){
TerrainLayers[i].OriginalTextures.DiffuseTexture = TerrainLayers[i].MyTerrainLayer.diffuseTexture;
TerrainLayers[i].OriginalTextures.NormalMapTexture = TerrainLayers[i].MyTerrainLayer.normalMapTexture;
}
}
public void ChangeTextures(){
for(int i = 0; i<TerrainLayers.Length;i++){
TerrainLayers[i].MyTerrainLayer.diffuseTexture = TerrainLayers[i].LayerTextures[TextureIndex].DiffuseTexture;
TerrainLayers[i].MyTerrainLayer.normalMapTexture = TerrainLayers[i].LayerTextures[TextureIndex].NormalMapTexture;
}
}
public void ResetLayersToOriginal(){
for(int i = 0; i<TerrainLayers.Length;i++){
TerrainLayers[i].MyTerrainLayer.diffuseTexture = TerrainLayers[i].OriginalTextures.DiffuseTexture;
TerrainLayers[i].MyTerrainLayer.normalMapTexture = TerrainLayers[i].OriginalTextures.NormalMapTexture;
}
}
}
if you fire those functions as a Single Event, this should keep you going quite fast
