Search found 5 matches

by 29A
Wed Feb 27, 2019 1:21 pm
Forum: User Support
Topic: Path-CPU vs Path-GPU
Replies: 10
Views: 8007

Re: Path-CPU vs Path-GPU

I see, that is one of my first experiments with blender, and i didn't know how to make it without so hard tessellation. The fact that LuxCore on GPU has a reduced precision compared to LuxCore on CPU is known problem I think that is on GPU there is float half precision math, i met the same with CPU ...
by 29A
Tue Feb 26, 2019 7:39 am
Forum: User Support
Topic: Path-CPU vs Path-GPU
Replies: 10
Views: 8007

Re: Path-CPU vs Path-GPU

Uh, I can replicated the problem on my (AMD) GPU so it is not driver related. I will check what is going on. The problem is in the scene: there are 2 coincident "Area" and "Area.001" objects. They are 2 area lamps and "Area" has a gain set to 0.0. Just delete "Are...
by 29A
Sat Feb 23, 2019 8:21 pm
Forum: User Support
Topic: Path-CPU vs Path-GPU
Replies: 10
Views: 8007

Re: Path-CPU vs Path-GPU

Dade wrote: Sat Feb 23, 2019 3:41 pm
29A wrote: Sat Feb 23, 2019 5:00 am The GPU one has a lot of reflections of the top light
Uh, I can replicated the problem on my (AMD) GPU so it is not driver related. I will check what is going on.
Actually both scenes are not important for me, accept it as a bug report.
by 29A
Sat Feb 23, 2019 3:11 pm
Forum: User Support
Topic: Path-CPU vs Path-GPU
Replies: 10
Views: 8007

Re: Path-CPU vs Path-GPU

You will be laughing, but after update the things got worse. Just installed a day old (02/22/2019) NVIDIA drivers version 419.17. Path-CPU (took 00:02:48) Path-CPU-new version.png Path-GPU (took 00:00:35) Path-GPU-new version.png And just to be sure, tried it on Azure VM, Windows 10 Pro, with 6 Core...
by 29A
Sat Feb 23, 2019 5:00 am
Forum: User Support
Topic: Path-CPU vs Path-GPU
Replies: 10
Views: 8007

Path-CPU vs Path-GPU

Hi ! I'm a newbie in Lux, and wonder why is there so big difference between Path CPU and Path OpenCL rendering ? The GPU one has a lot of reflections of the top light Path+CPU.png Path+GPU.png Compare, Bdir BiDir.png And with another, there are some lines appeared ??? Path-CPU-RT.png Path-GPU-RT.png...