Shader Issue

[bgolus]

Edge Detection via Shader not Image Effect

There are a few main ways to go about drawing outlines / edges on objects. Fresnel - Use a clamped dot(view normal, view direction). Pros: Works in shader without a separate pass. Will highlight almost every edge on smooth shapes. Cheap. Works on transparent objects. Cons: Difficult to control line thickness as its dependent on the angle of the surface to the camera rather than the depth and the roundness of the surface. Impossible to have consistent line thickness. Doesn't work well on hard…