How to virtually draw on a wall?

[rich2005]

Nothing in Gimp to directly paint with a texture effect.

You can paint on a layer over a texture, then bumpmap the layer Filters -> Map -> Bumpmap using the textured (layer) as the bumpmap. https://docs.gimp.org/en/plug-in-bump-map.html

This the Gi layer is bumpmapped and the mp layer as original.

   

Plenty tutorials if you search for gimp + bumpmap

The other one is a very old filter GIMPressionist https://docs.gimp.org/en/plug-in-gimpressionist.html

Same procedure, make a layer, apply the filter. Really GIMPpressionist belongs to another era where small images were the norm.