I want to flatten some places of a sculpted plane back to the original level, but flatten and smooth don´t work the way I want them to. The grease pencil marks the areas where the sculpt should be flat. What can I do?
This also helps with strokes not aligning with grease pencil color layers when trying to render with the camera position in the 2.8 update.
You have to reduce the strokes and color of everything on the depth axis to 0. It might be your Z or Y depending how you drew your layer. You get some warped results if when you're using anything beyond that. This flattens your image so it can render correctly your strokes and color in whatever position you want in the 3D space as a 2D object.
Hope this helps!