public override void Present()
{
GraphicsDevice.Begin();
// If we made a fake render target to avoid OpenGL limitations on window-provided back buffer, let's copy the rendering result to it
if (backBuffer != GraphicsDevice.windowProvidedRenderTexture)
{
GraphicsDevice.CopyScaler2D(backBuffer, GraphicsDevice.windowProvidedRenderTexture,
new Rectangle(0, 0, backBuffer.Width, backBuffer.Height),
new Rectangle(0, 0, GraphicsDevice.windowProvidedRenderTexture.Width, GraphicsDevice.windowProvidedRenderTexture.Height), true);
}
gameWindow.SwapBuffers();
GraphicsDevice.End();
}