Test your 2D 3D Normals

you can dsiplay in view the normal.

you need to :

1. set the pixel color to the normal of your object (in range -1.0 to 1.0).
2. select the buffer id where you output the normla of your object
3. you can display 2d normal for your 2d sdf, or 3D normal for your 3d sdf