LuxCoreRender Forums

Adjusting some of the settings of the scene, I have found significant differences between CPU and OpenCL when setting the importance value of the HDRi to 0, can anyone else confirm this?

Could this be linked to my problem, as they both seem to affect the direct lighting from the HDRi?

Dade wrote: ↑Mon Apr 13, 2020 3:46 pm Do you have an Intel GPU or are you using Intel OpenCL in general ?

Nope, OpenCL on an RX 570 4gb, not overclocked

Is there anything else I should try to fix this? Does it happen if you disable cache periodic update ? And does it happen only with this particular scene ? Yes this still happens with periodic update disabled, and also with caustic cache disabled entirely. Not just this particular scene, any scene ...

Is there anything else I should try to fix this?

This is very strange, not sure what is wrong on my end...

This is a rendering with Caustic Cache disabled. This shows that the Light Tracing is working as there is a caustic from the metal cube, yet the shadows are still incorrect.

For sake of comparison, here is the render in Blendluxcore without ACES, only sRGB.

Dade wrote: ↑Fri Apr 10, 2020 12:21 pm
Don't they look quite different (original problem screenshot Vs. stand alone) ?

This is just due to the ACES tonemapping.

Updated to 20.4.1, still not correct. CPU load reaches 100% in task manager. This must be hardware specific if other people cannot reproduce it. Does the Ryzen 5 2400g have an integrated GPU ? Yes it does, but I'm sure it's not using that. OpenCL device is labelled as "Ellesmere". I also ...

Dade wrote: ↑Fri Apr 10, 2020 12:22 am

jgrover110 wrote: ↑Thu Apr 09, 2020 11:18 pm I'll update and test again tomorrow

Try to check also your CPU load during the rendering

Updated to 20.4.1, still not correct. CPU load reaches 100% in task manager. This must be hardware specific if other people cannot reproduce it.