Version: 2018.1

EditorUtility.CompressCubemapTexture

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public static void CompressCubemapTexture (Cubemap texture, TextureFormat format, int quality);
public static void CompressCubemapTexture (Cubemap texture, TextureFormat format, TextureCompressionQuality quality);

Description

Compress a cubemap texture.

Use this function to explicitly compress a cube map texture into specified format.

using UnityEngine;
using UnityEditor;

public class CompressCubemapTextureExample : AssetPostprocessor { // Automatically Compress all imported cube map textures to the project to RGB24 void OnPosprocessTexture(Cubemap t) { EditorUtility.CompressCubemapTexture(t, TextureFormat.RGB24, TextureCompressionQuality.Normal); } }