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I have used a basic template for rendering simple shapes against a blank background.

Load generic blender project, insert shape, change from eevee to cycles, GPU rendered.... no changes to anything else.

When I rendered any shape before the edges came up clean and smooth.... now upon doing the same setup they are extremely jagged, no smooth edges ever now, now matter what shape I insert.

See the image attached for a simple shape, rendered with jagged edges - no changes are made to teh general blender project setup apart from changing to cycles with GPU

Thanks - just confused why from one project set up like this, it was fine, and now all are jagged.

enter image description here

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  • $\begingroup$ can you show us your blend file? $\endgroup$
    – Chris
    Commented Feb 4, 2021 at 15:22
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    $\begingroup$ Have you tried adjusting the number of samples? This looks like you aren't using enough samples to me. $\endgroup$
    – PGmath
    Commented Feb 4, 2021 at 15:35
  • $\begingroup$ @Chris - how do I attach a blend file here on stackoverflow? Its literally an new project, blender 2.8.... add a blank mesh, cycles, GPU rendering..... thats it..... and this happens $\endgroup$
    – urema
    Commented Feb 4, 2021 at 16:50
  • $\begingroup$ @PGMath - render sampling is 256 $\endgroup$
    – urema
    Commented Feb 4, 2021 at 16:50
  • $\begingroup$ with this link: blend-exchange.giantcowfilms.com $\endgroup$
    – Chris
    Commented Feb 4, 2021 at 16:51

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Thank you for your .blend-File. That helped a lot.

The problem is the lighting.

If you change your lighting settings to this:

enter image description here

you get this: (and yes, i added the blue cube to check, what's going on ;)

enter image description here

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    $\begingroup$ Hello :). Could you please add a little bit more explanation why it happens? Just so your answer is more useful to new users who aren't familiar with lighting. Thanks :). $\endgroup$
    – jachym michal
    Commented Feb 4, 2021 at 19:31
  • $\begingroup$ Hi Jachym, if i knew it, i would ;) i just found out it is the reason. Why it is, i have no idea. But if you know, just write in the comments and i will update the answer. Sorry for my less knowledge ;( $\endgroup$
    – Chris
    Commented Feb 4, 2021 at 19:48
  • $\begingroup$ that worked yea.... more confused now however - thanks though! $\endgroup$
    – urema
    Commented Feb 4, 2021 at 22:15

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