This is mainly to do with LuxRender but I'm using Blender to control it, so sticking it here.

Within Blender I create a new default scene, switch the render to LuxRender and render the box & light. It takes about a second for the box to display and continues on for a few minutes.

If I then change the material of the box to Glass and re-render the scene is black for at least 1hr 30m (at which point I gave up). The log shows no issue and both CPU cores are on 100%. This is a low performance CPU (Intel(R) Core(TM) m5-6Y57 CPU @ 1.10GHz) without OpenCL/GPU rendering.

Is there any way to speed it up by reducing the accuracy of the refraction, amount of light bounces or similar?


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.