public void Modify(object asset)
{
var renderTex = asset as RenderTexture;
renderTex.wrapMode = this.wrapMode;
renderTex.filterMode = this.filterMode;
/*
depth parameter cannot change from code.
and anisoLevel can be change if asset's depth is 0.
*/
if (renderTex.depth == (int)DepthBuffer.NoDepthBuffer) {
renderTex.anisoLevel = this.anisoLevel;
}
}