This feature comes with version 0.43 is in quite experimental state. A few conditions has to be fulfilled, however situations for its usage should often meet those conditions.
- it works only with Path Tracing engine.
- no skyportals should be used.
- works with environment texture as base, optional sun can be added.
Simply turn on matte shadow option in material editor.
Also careful setting for environment texture is recommended. Because this trick is quite a hack for light evaluation, you have to set correct environment texture power before rendering. Blend layer corrections would not help here if you set it wrong.
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