/3/ - 3DCG

>>538006
Can't with Freestyle but you can get a shitty approximation with a sobel filter.

You'll need another render layer that uses a basic white diffuse material for everything so that you have a layer that gives you light intensity for the compositor, and in the compositor you'll take the Depth, run it through a Filter node set to Sobel, put that through a Blur filter, route the output the white diffuse material render layer to the blur size of the Blur filter, turn up the Blur filter's X and Y, use a color ramp to sharpen up the blur output since it's only used to make the sobel filter's lines wider in dark areas, and then use it as the fac of a mix node to mix black or another color with the usual render layer's output.

It looks bad though.