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.
Updated to 9.0.0 with official support for SketchUp 2021. Not that the previous versions had any problems with 2021 after some simple "touches". Changelog: Shaderlight 2021 will install to and run from within SketchUp 2021. Additional Portal Light Improvements Further work following on from Shaderlight 8.0.1 means that Shaderlight renders interior scenes that use Skylight Portals with higher quality and more accuracy. Once again, depending on the balance between light sources in your scene, you may need to adjust the intensity of artificial lights and / or the exposure settings to achieve the same overall brightness as renders from previous versions of Shaderlight.