A new version of this sample is now available.
This new sample demonstrates high quality cloud rendering technique which uses Pixel Shader Ordering, a DirectX extension available on Intel HD graphics hardware. The sample continues the series of samples developing outdoor lighting technology. This release adds clouds to the clear sky model implemented in the previous sample The full sample source code is available on GitHub. It can also be downloaded using this direct link. This HPG paper describes the details of the technique (The definitive version is available at http://diglib.eg.org/):
The following screenshots show some images generated by the sample: