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ebruneton / precomputed_atmospheric_scattering

This project provides a new implementation of our EGSR 2008 paper "Precomputed Atmospheric Scattering".
BSD 3-Clause "New" or "Revised" License
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Atmospheric scattering and ozone #4

Closed DrDrake closed 7 years ago

DrDrake commented 7 years ago

Hi! The new version has become much clearer and more correct. Great work! Have you thought about adding ozone accounting to your implementation? According to the developers of the Terragen (https://www.youtube.com/watch?v=z__WZOh1wXU), it has a significant effect on the appearance of the atmosphere. Gustav Bodare and Edvard Sandberg in their work (http://publications.lib.chalmers.se/records/fulltext/203057/203057.pdf) suggested that ozone should be taken into account not by a separate layer but by a distribution depending on the height (in "3.2.5 Transmittance"). As I understand their proposal is based on this http://skyrenderer.blogspot.se/2012/10/ozone-absorption.html article by Peter Kutz.

ebruneton commented 7 years ago

Thanks for your suggestion! I added support for the ozone layer. You can see its effect in the demo, with the 'o' key.

DrDrake commented 7 years ago

Thanks for implementation of it. You even added custom density profiles. Awesome!