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I was wondering if a Grease Pencil layer can get (or generate) light and shadows like a regular mesh ? Before Grease Pencil, I was achieving this by loading an image sequence as a texture on planes; and this was casting light.

Now that GP exists, it could improve my workflow a lot (no need to export / re-import the animation, setup a material, etc) - but I need to having it interacting with lights...

Thanks

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from Blenderartists on August 2018 :

No. Grease Pencil objects don’t cast shadows or emit light. In fact, there is a need to restore conversion from GP object to curve or meshe.

Currently, a GP stroke or an annotation cannot be converted to a curve or mesh like it works in 2.79.

from developper Antonio Vazquez (antoniov) on 2018-01-10 :

This is feature in Todo list (integration with Eevee), but it's not a simple thing, so it will be done in future versions 2.8x

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  • $\begingroup$ Since then, most remains unchanged but «a GP stroke or an annotation cannot be converted to a curve or mesh» should be just «a GP stroke or an annotation cannot be converted to a mesh». Conversion to curve seems to work (and casts the right shadows once Fill type is set to Full and Bevel depth to 0.01) $\endgroup$
    – Nicola Sap
    Jan 9, 2019 at 15:21
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    $\begingroup$ Upvote the idea on Blender's Right Click Select : blender.community/c/rightclickselect/Vdcbbc $\endgroup$
    – gordie
    Jan 10, 2019 at 10:33
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Realized as visual effects->shadow in current version 2.91. https://docs.blender.org/manual/en/latest/grease_pencil/visual_effects/shadow.html

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    $\begingroup$ This FX is just a simple drop shadow, which do not react with the light setup of the scene. $\endgroup$
    – gordie
    Feb 25, 2021 at 11:18

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