Hi!
I get jagged highlights when rendering glass in GPU mode. In CPU it looks perfect but in GPU it looks very jagged ( se image attached ). Anyone have had the same issue? Or know hot to fix it. Im running Keyshot 2024 and Nvidia 5090 gpu.
Are you using rounded edges on the geometry?
Have you tried increasing the Pixel Filter Size in the Render Options?
Hi Don, I tested with rounded edges both on and off but it shows the same results. I also tried increasing the Pixel filter size but it doesn´t solve the problem either. So strange that the CPU mode can make it nice and not the GPU mode…
CPU and GPU are different render engines; we strive to ensure the parity between the two is as close as possible.
TBH, it’s really tough to troubleshoot this with only screenshots. There could be a number of things going on, like…
- Is this an animation?
- Does it appear the same if you move the camera?
- Are you using a physical lights? If so, does adjusting the intensity of the light change anything?
- What render mode? Product or Interior?
I understand you may not be able to share your scene, but IMO without the scene and more information, there are too many variables allowing us to easily troubleshoot here on the forums.
Hey @rickard.hederstierna I dug into this a little more, I’m not sure if the following will help your scene but I was able to reproduce the jaggies in a render.
To remove the jaggies,
- I adjusted the camera depth of field distance.
- Adjusted the Brightness of the light that created the highlight.
- Increased Pixel Size to 2.
- Adjusted the Shadows/Darks in the Image Tab Curves.
- Disabled Sharpening.
- Increased sample count from 5000 to 15000.
Again, looking at your renders I’m not sure any of the tips will work because your highlight isn’t blown out like it is in my instance. Still give them a try if applicable and let me know if any of it helps.
In the meantime, I’ll show the devs my scene and explain your issue.
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Hi Don! thanks for the feedback. I will try with your ideas above.
Regards