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I'm trying to use grease pencil on two objects, but one object is inside the other. I still want to see grease pencil on the inside object.

I have a blue cube inside a green cube. The green cube is transparent, and I want both cubes to have an outline (using grease pencil).

Is this possible??

enter image description here

enter image description here

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  • $\begingroup$ Hi Austyn. It is possible to see a Grease Pencil object under a transparent Object material but only if using Eeevee render engine. Try switching to Eevee and see if that resolves the issue. Make sure in the Settings of the transparent material to set Blend Mode to Alpha Blend. $\endgroup$ Oct 24, 2023 at 22:46
  • $\begingroup$ @RumenBelev I changed to Eevee render and made sure my blend mode was Alpha, but it still isnt showing. I added a photo to the post as well. $\endgroup$ Oct 25, 2023 at 23:37

2 Answers 2

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In the transparent cube's material properties, under Line Art you can set Levels to 0. This will make the material not be counted towards occlusion levels, resulting in the desired effect.

editor screen

rendered output

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It looks like you are Using Line Art modifier on a Grease Pencil objects. This modifier works using Camera View but doesn't generate hidden edges.

You can try the following:

Make sure to switch to Eeeve render engine.

Add Cube with semi-transparent material. In the material settings set the Blend Mode to Alpha Blend Duplicate the Cube and Convert it to Grease Pencil (Right Click menu). Go in the material settings of the generated Grease Pencil and delete the White material responsible for the fill color.

Add another cube and scale it down. Do not activate Alpha Blend in its material settings. Duplicate the cube and convert to Grease Pencil. Repeat the process with the GP material leaving only the outline.

The result should be like this:

enter image description here

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