Operating system: Windows 8.1 x64
Graphics card: Nvidia GTX 960m, Intel HD Graphics 4600
Blender 2.79 official release
Short description of error
If you use the Normal Edit modifier on Directional mode on all vertices of a mesh, the mesh will not display according to the edited normals.
Exact steps for others to reproduce the error
- Create a sphere, an empty and a lamp.
- Add a Normal Edit modifier to the sphere, set it to Directional mode, turn on Parallel Normals and set the empty as target object.
- Move the empty up, so every single normal of the mesh points up.
- Apply the modifier and render the scene. The mesh will not display as it should.
I didn't post this in the Modifiers area because the modifiers and the mesh-displayed normals seem to be working right (see the image below with the purple normals), but the mesh doesn't respect the edited normals when rendered or when viewed in viewport-render mode or viewport-material mode.
If you set the viewport display mode to solid then it does look right: the entire mesh has one flat shade, since all normals point in the same direction.