The scene is lit by sky and sun. I tried with only sky or flat colour, the difference is still there. Maybe it is a bug in opencl code.
both rendered 500 samples without any cache or other setting.
opencl
cpu
Environment lighting results different by cpu and opencl
Forum rules
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
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- Posts: 16
- Joined: Fri Mar 09, 2018 1:46 pm
Re: Environment lighting results different by cpu and opencl
Can you upload the scene?
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- Posts: 16
- Joined: Fri Mar 09, 2018 1:46 pm
Re: Environment lighting results different by cpu and opencl
it is a blender 2.8 file.
Re: Environment lighting results different by cpu and opencl
You got coplanar faces which are causing an issue. The room floor and the plane (ground) are located at same height (0).
Either move one up/down or cut out a whole from the plane.
Either move one up/down or cut out a whole from the plane.
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- Posts: 16
- Joined: Fri Mar 09, 2018 1:46 pm
Re: Environment lighting results different by cpu and opencl
ok, thanks, it solved my problem. I just wonder why it is not showing in cpu rendering.
Re: Environment lighting results different by cpu and opencl
For mysterious reasons, OpenCL engines in LuxCore have more problems with floating point precision than the CPU engines.