public IDisposable MakeCurrent(EglSurface surface)
{
Monitor.Enter(_lock);
var success = false;
try
{
var old = new RestoreContext(_egl, _disp.Handle, _lock);
var surf = surface ?? OffscreenSurface;
_egl.MakeCurrent(_disp.Handle, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (!_egl.MakeCurrent(_disp.Handle, surf?.DangerousGetHandle() ?? IntPtr.Zero,
surf?.DangerousGetHandle() ?? IntPtr.Zero, Context))
{
throw OpenGlException.GetFormattedException("eglMakeCurrent", _egl);
}
success = true;
return(old);
}
finally
{
if (!success)
{
Monitor.Enter(_lock);
}
}
}
public void Dispose()
{
_egl.MakeCurrent(_display, _draw, _read, _context);
Monitor.Exit(_l);
}