private void UpdateNormalMap()
{
if (NormalMap == null || NormalMap.width != map.width || NormalMap.height != map.height)
{
if (NormalMap != null && NormalMap.IsCreated())
{
NormalMap.Release();
}
NormalMap = new RenderTexture(map.width, map.height, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
NormalMap.hideFlags = HideFlags.DontSave;
NormalMap.Create();
}
Normal.Apply(map, NormalMap);
material.SetTexture("_NormalMap", NormalMap);
}