https://www.shadertoy.com/view/Ml3GWs

Localized tonemapping – is global exposure and global tonemapping operator enough for video games? https://bartwronski.com/2016/08/29/localized-tonemapping/ Image dynamic range https://bartwronski.com/2016/09/01/dynamic-range-and-evs/

https://seblagarde.wordpress.com/2016/08/28/siggraph-2016-an-artist-friendly-workflow-for-panoramic-hdri/