that OpenGL code is written like this in LambdaCube 3D:<p><pre><code>  main = ScreenOut (FrameBuffer (ColorImage @1 (V4 0 1 0 1.0)))
</code></pre>
or with depth + color buffer<p><pre><code>  main = ScreenOut (FrameBuffer (DepthImage @1 1000, ColorImage @1 navy))</code></pre>