Maximum distance accepted by the renderer

[Ketaries]

Hi all,

I'm working with mitsuba for research purposes and I need to render scenes with real world distances which are quite big (~10 000 km). In order to select a proper ratio between real world units and mitsuba world units I need to know if mitsuba has a maximum limit for defining the position of objects or their size.

Thank you in advance !

[Ketaries]

Looks like the solution was simply to modify the far_clip value when defining the sensor in order to extend the limit of the scene. I missed that in the doc before, my bad !

[njroussel]

At your scale, one other important thing that you might want do to, if you haven't already, is to use a double variant. We don't ship any double variants in the Python packages, so you would need to build the project yourself.
You would also need to use the built-in KD-Tree, by turning off the MI_ENABLE_EMBREE option (it's a CMake option). This comes as a significant performance cost, but it is the only solution we currently provide if you need double-precision raytracing acceleration structures.

[Ketaries]

Oh indeed, I'll check if it works as it is for now otherwise I'll do that. Thank you for the tips !