When putting a 3D mesh in front of a grease pencil object, there’s a transparency problem around the mesh. Not sure if it’s alpha aliasing or multiplying or something, but it shows whatever colour is behind the GP object. Here with a red GP fill, a blue 3D plane and a white background: Note that if, say, a yellow sphere was to pass behind the GP object, the outline would turn yellow, so I think it’s something to do with the inbuilt grease pencil compositing and transparency. I was wonderin
Grease pencil doesn't work when behind an object with alpha? : r/blenderhelp
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Grease pencil doesn't work when behind an object with alpha? : r/blenderhelp
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