Easily add a clown pass to your current scene. If you are into old school compositing or are forced to use the Adobe Suite and can't install the cryptomatte plugin, this might help you ! This addon can generate two types of clown passes, material and objects.
To add the clown pass, simply click on the Object Menu in Object Mode and click on the Generate Clown Pass button.
You can adjust some parameters in the last operator panel in the bottom left corner of the 3D view.
And that's it you now have a clown pass added to your render. If you are using Eevee, you can visualize the pass directly in the viewport. In Cycles, you need to render the image to have access to the new render pass.
By default, the addon generates a single pass where all colors are splated together. However sometimes it can be useful to have each color in its own pass. To do so, simply uncheck the Is Monopass option when you generate the clown pass.
The addon comes with a compositing operator that automatically connects clown passes to an output node that will save the clow pass image on disc at an user defined folder. It is particularly usefull if you have selected to the multipasses option. Click on the Setup Clown Passes in the Node menu. A file browser will ask you for a target folder and upon validation, the addon connects clown passes to outputs images.
If you want to remove the clown, call the specific operator from the F3 Menu and search Remove Clown.