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So this is my scene :

enter image description here

When I render it using 128 samples or less, the final image is visible:

enter image description here

However, when I increase the samples greater than that, the image is visible while rendering and then disappears after the composition is finished.After seeing a few posts on here, I found that turning off the sequencer allows it to render. But, the result was the same:

enter image description here

This is my compositor node setup:

enter image description here

I'm using Blender 2.79, could this be a bug?

Edit: Ok, so when I tried to render the scene again, it seemed to be successful to the 99% mark but then fails and becomes blank or black when it completes.

enter image description here

enter image description here

Compositor nodes :

enter image description here

Update: I tested the scene further and apparently it's the cloud layer under the islands that has been causing all the problems. I rendered each layer separately, and they rendered fine, except for the cloud object layer, which initially showed signs of rendering and then disappeared as soon as it finished.

This is the object's shader:

enter image description here

It is just a simple plane with these modifiers:

enter image description here

Any ideas what could be causing this and how I could fix it?

PS: When I say "cloud layer" I mean the cloud object, not any render layer.

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  • $\begingroup$ Please show an image of your compositing nodes $\endgroup$ – user1853 Nov 17 '17 at 14:54
  • $\begingroup$ @cegaton hang on $\endgroup$ – Tejas Nov 17 '17 at 15:04
  • $\begingroup$ @cegaton I'm running another test render, but the compositor nodes are simple as of now, he render result is connected to the composite and viewer outputs... no other nodes are connecting them $\endgroup$ – Tejas Nov 17 '17 at 15:11
  • $\begingroup$ @cegaton I added the compositor node setup too $\endgroup$ – Tejas Nov 17 '17 at 15:25
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    $\begingroup$ Could be that you're running out of system resources, although an error should pop up in that case. Try increasing the step size or decreasing the max steps in the geometry panel in the render tab and render again with the same samples. $\endgroup$ – Brenticus Nov 17 '17 at 21:31
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Looks like the compositor is making your whole image transparent somehow when it applies the post processing effects. Try disabling the compositor to see if that fixes your issue. Have you changed anything other than the samples between renders? (New to Stack Exchange so can't comment this)

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    $\begingroup$ One way to probe and troubleshoot this is to add viewer nodes at points along the composite flow. $\endgroup$ – Ron Proctor Nov 17 '17 at 21:18

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