Blender 2.81, 2.81a Windows 10, 2xGTX1080 GPUs, GPU rendering

I've been through the Manual and a few tutorials, but I guess I'm missing something. Why can't I get the Cryptomatte Pick working? Is there another undocumented type of Pass that needs to be activated?

The scene is just the cube. I render the scene, hook up the nodes as below. I've tried both Object and Material options. Tips?

enter image description here

  • $\begingroup$ Yes. As stated, I tried both types of Cryptomatte - the screenshot just shows the material try. It's still hooked up correctly, and the Pick pass should show me a coloured silhouette of the cube, whichever type of crypto I used. $\endgroup$ – OroNZ Dec 9 '19 at 1:46

for me its working pretty good. using this since blender beta. few tips to find out..

1- try this sample file in my case, it looks like this. enter image description here

steps i did to check

  • create objects
  • assign materials
  • switch to cycles
  • turn on cryptomatte (as you have already done )
  • hit render
  • use cryptomatte nodes in compositor, tested via object and material both.
  • $\begingroup$ Yup, your scene file works on my machine. I did everything in your steps (which was everything in the Manual). Now I have to figure out what massive combination of settings you have that are different from mine :/ $\endgroup$ – OroNZ Dec 7 '19 at 21:03
  • $\begingroup$ try resetting blender preferences. i am 100% sure, i hadn't tweaked any other settings. $\endgroup$ – haseeb Dec 7 '19 at 21:11
  • $\begingroup$ Nope. Reset doesn't work. $\endgroup$ – OroNZ Dec 7 '19 at 21:18
  • $\begingroup$ Back atcha. Does this file work on your machine? <img src="https://blend-exchange.giantcowfilms.com/embedImage.png?bid=laB7VaMz" /> $\endgroup$ – OroNZ Dec 7 '19 at 21:47
  • 1
    $\begingroup$ i tried, nope, it doesn't. i am glad , you found solution. :) $\endgroup$ – haseeb Dec 8 '19 at 21:58

After going a little crazy hunting down the problem, I reset my Prefs to Factory Settings... which didn't fix the problem.

However, resetting my Startup File seemed to do the trick (File > Defaults > Load Factory Settings). It must have become corrupted somehow during my upgrade from 2.79 to 2.80, because opening older files seemed to use Cryptomatte just fine. I still don't know what caused the problem in the startup file, but... problem gone now.


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.