EditorUtility.CompressTexture

설명

Compress a texture.

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

If you want to do texture compression in-game, use Texture2D.Compress function, which will use faster but lower quality DXT compression.

using UnityEngine;
using UnityEditor;

public class CompressTextureExample : AssetPostprocessor
{
	// Automatically Compress all imported textures to the project to RGB24
	void OnPosprocessTexture( Texture2D t )
	{
		EditorUtility.CompressTexture( t, TextureFormat.RGB24, TextureCompressionQuality.Normal );
	}
}