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Radeon ProRender Discussion

inputhone
Adept I

Where does the Black Dots come from?

Hey i use AMD PRORENDER on MACOS MOJAVE with VEGA 64 eGPU Blender 2.8. Sometimes i get these weird black dots in lighted areas. I tried figuring out where they come from, but it's weird. sometimes they go away when i move the camera or set the noise threshold low. Sometimes they don't. Any advice? I really can't tell what's going on? I use Uber and Principle node. This didn't happen in the 2.79 blender addon, as far as i remember.

Bildschirmfoto 2019-04-15 um 14.38.38.pngBildschirmfoto 2019-04-15 um 14.27.44.png

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6 Replies
inputhone
Adept I

Re: Where does the Black Dots come from?

here another example, as it jsut happend again:

Bildschirmfoto 2019-04-16 um 14.18.10.png

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plasmapeppers
Adept II

Re: Where does the Black Dots come from?

This is probably an extension of this issue https://community.amd.com/thread/238672 , have you tried without the CPU being used for a rendering engine?

inputhone
Adept I

Re: Where does the Black Dots come from?

I see. So this is a known bug generally in the 2.8 addon? Is it cross blender with any setup, or a specific egpu setup problem?

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plasmapeppers
Adept II

Re: Where does the Black Dots come from?

Its a known bug with this add-on, at least by myself and a few others. I don't know if the developers know though. It is cross setup, and eGPU doesn't affect it since its a CPU not an eGPU issue. 

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tomhome1138
Adept I

Re: Where does the Black Dots come from?

I've been having this issue in Maya 2018.6 on an i9 and an rtx 2070. BUT it only happens when doing batch rendering. 

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david_s
Miniboss

Re: Where does the Black Dots come from?

Hi,

Yes, this is a known issue. It actually does happen in production render as well. I will send this information to developers.