A small update with fixes came out for this renderer. Info: http://www.artvps.com/index.php/products/shaderlight/what-is-shaderlight Unless they do something about it, they'll bore crackers to death Protection is the same since 2015 and that's only because I have deleted the even older versions. Changelog: Fix several issues with image brightness when Skylight Portals are used Addresses a number of issues with light propagation from Skylight Portals. In different scenarios (mainly depending on whether Global or Direct Illumination is selected and the balance of other light sources), renders could appear too dark or too bright. You may find that you need to adjust your exposure setting and / or the light intensities in your model after installing this release, but the results when using Skylight Portals should be more consistent and physically accurate.