Search found 13 matches

by pixel_peeper
Wed Mar 13, 2019 6:48 am
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

Ok, I ended up using cycles for the lights only, wich are an exr texture made from a top ortho render of every type of LED, made with LuxCore. The PCB it's rendered with LuxCore and everything is composed together and animated via some mix nodes. Maybe in the next days rickyx will try some different...
by pixel_peeper
Wed Mar 06, 2019 10:54 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

There seems to be a workaround. I have solved applying the result directly from the driver script: that is not the best solution but it is working. Attached you can find a working example: LuxCore-Drivers.blend Thank you, Rickyx ps. nice discovery: if you remove the constraint and move empty over 1...
by pixel_peeper
Wed Mar 06, 2019 10:46 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

I can reproduce this at the 128 samples you set in the file, even with OpenCL CPU device (to eliminate possible driver issues). There might be a bug in the OpenCL code. Have you tried higher sample numbers (something like 1000)? No, because it takes too much time and I need to finish this shot :| a...
by pixel_peeper
Wed Mar 06, 2019 4:52 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

Instead of light groups you can change the intensity of your material emiitting light. Set a key for intensity and animate the value. The simplest shape for the LED plane can be a triangle. This reduces number of faces emitting light to one. If you have circles the number of lights depends on the t...
by pixel_peeper
Wed Mar 06, 2019 9:42 am
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

I need to reproduce a very realistic array of SMD LED, many many lights that are passing through a translucent material, I know that's a very difficult scene for a ray tracer. But I think that I will change the whole approach using a mix of Cycles, LuxCore and some compositing trick, I Just need to...
by pixel_peeper
Wed Mar 06, 2019 9:35 am
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

If each light only illuminates a small area, DLSC (direct light sampling cache) could also be interesting for you. It is available in the light strategy dropdown. https://forums.luxcorerender.org/viewtopic.php?f=5&t=430 https://forums.luxcorerender.org/viewtopic.php?f=5&t=675 I've tried but I can't...
by pixel_peeper
Tue Mar 05, 2019 9:41 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

I need to reproduce a very realistic array of SMD LED, many many lights that are passing through a translucent material, I know that's a very difficult scene for a ray tracer. But I think that I will change the whole approach using a mix of Cycles, LuxCore and some compositing trick, I Just need to ...
by pixel_peeper
Tue Mar 05, 2019 5:43 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

update: I downloaded this buid and the bug seems fixed, thank you! the only thing that doesn't work properly with OpenCL is this one, some lights are darker compared to other identical. I don't know how to explain in a better way but if you try to render this scene with OpenCL and CPU and check the ...
by pixel_peeper
Tue Mar 05, 2019 3:58 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

I have downloaded luxcorerender-latest-win64-opencl.zip but I still get the same result. If I remove pyluxcore.pyd I get the error as expected and if I restore the file LuxCore works, but always with that bug...
by pixel_peeper
Tue Mar 05, 2019 1:57 pm
Forum: User Support
Topic: wrong light groups with OpenCL
Replies: 33
Views: 1897

Re: wrong light groups with OpenCL

The number of light groups supported in OpenCL is capped to 8 (default+7): https://github.com/LuxCoreRender/LuxCore/blob/2ac2349fb2f3d9fb1bcf6bca35b60859b3143d6e/src/slg/engines/pathoclbase/pathoclbaseoclthreadfilm.cpp#L119 So it should work in your case. Tomorrow, I will check what is going wrong....