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mitsuba-renderer / mitsuba3

Mitsuba 3: A Retargetable Forward and Inverse Renderer
https://www.mitsuba-renderer.org/
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[Bug] Spot light source emitter not showing #1392

Open grindash opened 1 week ago

grindash commented 1 week ago

Summary

"Spot light" emitters are not produced in the scene when their xyz position contains floating numbers.

System configuration

OS : Windows 10 Python version : Python 3.9.10 Mitsuba 2.1.0 Compiled variants: scalar_rgb

Mitsuba is run with pycharm

Description

I'm making a scene with multiple light source. The spot light emitters were used and they only produce light when their xyz position don't have a decimal.

Steps to reproduce

Here is a scene with 3 spots, the following parameters are used : <emitter type="spot"> <transform name="to_world"> <lookat origin="3, 3, -2" target="3, 0, -2" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> <emitter type="spot"> <transform name="to_world"> <lookat origin="3, 3, -4" target="3, 0, -4" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> <emitter type="spot"> <transform name="to_world"> <lookat origin="3, 3, -7" target="3, 0, -7" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> illu 1

Then a second scene is made with the middle spot using decimals: <emitter type="spot"> <transform name="to_world"> <lookat origin="3, 3, -2" target="3, 0, -2" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> <emitter type="spot"> <transform name="to_world"> <lookat origin="3.4, 2.51, -4.42" target="3.4, 0, -4.42" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> <emitter type="spot"> <transform name="to_world"> <lookat origin="3, 3, -7" target="3, 0, -7" up="0, 0, 1"/> </transform> <rgb name="intensity" value="100.0"/> </emitter> illu 2

Do you know how to fix this problem ? Thanks

njroussel commented 2 days ago

Hi @grindash

Are you using Mitsuba 3 or Mitsuba 2? Your "system configuration" section is missing some important infromation. If you're using Mitsuba3, please run python -m mitsuba.sys_info and copy the full output.

Could you also provide us with a full scene description?