1
$\begingroup$

Is there any way to get Blender to paint a fresh render over the top of the previous render, to make it easier to see the result of changes?

So: I render a scene, then make some changes, then hit render again, and instead of being blank, it shows the previous render result, but gradually replaces it with the new result.

$\endgroup$
1
  • 7
    $\begingroup$ One alternative is to switch to another render slot prior to rendering ("slot" dropdown in the header of the image editor, or by pressing the number keys in the image editor). This way you can rapidly switch between different slots to compare renders, even after the renders have completed. $\endgroup$
    – gandalf3
    Feb 22 '16 at 6:56
1
$\begingroup$

You could technically do this in the compositor, but you would have to make sure to save each of your renders out as images, and then be diligent to add them all back into the node editor. Then you could use (overlay, add, multiply, Mix, etc...) nodes to see the backdrop change.

It may be a very good way to learn the "Gut Feel" of what your parameters are truly affecting.

$\endgroup$
2
  • $\begingroup$ Not what I'm after, but good to know. $\endgroup$ Feb 22 '16 at 21:52
  • $\begingroup$ If you are going to use the compositor to compare images you might find the switch node and split viewer quite useful: i.stack.imgur.com/21HC2.gif $\endgroup$
    – user1853
    Feb 23 '16 at 5:58

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.