opensource lighting engine

We would like to find an open source lighting engine that allow us to bake lighting in runtime like this software: 2D & 3D BIM collaboration platform. BIM collaboration software from Revizto
Do you know any engine or engine using in revizto?

Are you working on a non-game tool?

yes, our main project is for real estate

I’ve used Lightmap Maker. It’s free, but not open source.

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How to integrate it to your apps?

Unfortunately Lightmap Maker doesn’t include an SDK.
I haven’t seen any lighting engines that are both open source and runtime.

Many years ago, there were some radiosity engines with source code.
RadiosGL was one of them

Maybe Unity 5 is a better bet. We are finding it hard to tell the difference between baked and realtime in it.

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you can find the different easier if taking a look at you demo

we just hope to make realtime around 80% of this quality

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Are you talking about the fake “realtime” that require pre-computing or actual realtime lighting?