Airplane in the Clouds

An airliner flies above the clouds simulated with OpenCL Pyro sim. There are a total of 3 different cloud types rendered and laid out in 3 height levels.
All the elements are rendered using Houdini Karma XPU using Material X shaders for both the clouds and the airliner.

The plate is a photo I took from an airplane using the original Sony A7R with Sony Zeiss Sonnar T FE ZA F1.8 55mm .