That is weird, i have a scene with 165 light sources (grocery store scene with a lot of spot lights, sometimes some of them are not producing indirect lighting, but sometimes it does. It looks like they should not overlap each other to produce indirect light. What issue i am facing?

Lumen has a 256 light limit when using hardware raytracing. Don’t think there’s a limit for software raytracing. GPU lightmass used to have a 256 light limit but as I recall, it has since been removed. CPU Lightmass should have no limit.

We use cookies to make our services work and collect analytics information. To accept or reject analytics cookies, turn on JavaScript in your browser settings and reload this page.

Hello, working with lumen i have noticed that if there are a lot of light sourced then some of them is not going to produce indirect light. Is amount of light source producing indirect light limited?

From 5.1 Lumen will pick N most important lights instead of N first lights, so it should work out of the box without increasing r.LumenScene.DirectLighting.MaxLightsPerTile limit. BTW this is a limit per surface cache tile (8x8 texels) not per scene.