private void FreeGlobalTextures()
{
foreach ( Texture tex in globalTextures.Values )
{
TextureManager.Instance.Remove( tex.Name );
}
globalTextures.Clear();
foreach ( MultiRenderTarget mrt in globalMRTs.Values )
{
Root.Instance.RenderSystem.DestroyRenderTarget( mrt.Name );
}
globalMRTs.Clear();
}