Himalayan Valley: Initial Tonemapping

The below screenshots demonstrate the fake global illumination method I mentioned in my last post. The diffusely convolved cubemaps have been resampled at 16px x 16px for a smooth result.

Also visible in these screenshots, is the tonemapping LUT (lookup table) that I am currently working on. The scene has a high dynamic range which I plan to colour manage with a dynamic tonemapper.