Dear Blender Community,

Several weeks ago I suddenly experienced difficulty when rendering on my GPU. Whereas before the renders looked just like the CPU renders as they are supposed to, my GPU renders now had a gray overlay or mist, if you will, in them. This happens in every scenes, but I will illustrate the difference with pictures from the following test scene: A rendered image using CPU rendering (looking normal) A rendered image using CPU rendering (looking normal)

The same scene rendered by GPU The same scene rendered by GPU

For the GPU render I used OpenCL rendering, thus using an AMD graphics card. The odd thing is that when I used GPU rendering in the viewport rendering the preview looked perfectly fine without any gray overlay. I've already tried tweaking many settings, though nothing made any difference. Except rendering with a very low sampling amount, like 5, made it so you have a very ugly grainy image though with very little of the gray overlay.

I really hope someone might have a solution for this problem so I will again be able to render scenes with shorter render time. If any more information is required feel free to asked and thank you very much in advance.

  • $\begingroup$ Welcome to BSE, uploading your .blend file might help you get the right answer, you can upload your file here: blend-exchange.giantcowfilms.com $\endgroup$
    – Georges D
    Jun 13, 2016 at 20:25
  • $\begingroup$ related: blender.stackexchange.com/questions/55204/… $\endgroup$
    – user1853
    Jun 13, 2016 at 21:13
  • $\begingroup$ Thank you, I don't think uploading the .blend file, will be of any use because the problem occurs in every blend file I use. I've through the related linked problem though (Thanks a lot for the link) and I'm going to try downgrade my driver. If this remains with no result, I will upload my .blend file anyway. $\endgroup$ Jun 18, 2016 at 16:12
  • $\begingroup$ i have the same problem ! i fixed it by selecting "progressive refine" under "performance" but it slows down the progress by x10 aprox... any sugestions ? $\endgroup$
    – stephan
    Sep 15, 2016 at 20:11
  • 1
    $\begingroup$ Hey Everyone, thanks for all the help you've offered. My problem has been solved. The latest update for my gpu fixed the problem. $\endgroup$ Oct 2, 2016 at 9:08


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