Blender 2.67 Windows 7 Geforce gtx460

Head model with subsurface scattering and one texture Cpu render - fine, but slow. gpu render - face comes out black! (it was working at first it changed for some reason)

any suggestions? why should this happen.

Here is an image of the problem


  • $\begingroup$ I don't think it's even rendering the SSS shader and is replacing it with the holdout shader (it will do that whenever the shader is either broken or not supported. BTW I got that reference :D) $\endgroup$
    – CharlesL
    Jun 18, 2013 at 13:16
  • 1
    $\begingroup$ Note that you can fake SSS on the gpu with the Light path node, see this thread on BlenderArtists $\endgroup$
    – gandalf3
    Nov 4, 2013 at 22:17
  • $\begingroup$ same problem in cycles with gts 240. what is SSS ? $\endgroup$
    – juFo
    Oct 9, 2014 at 13:16

1 Answer 1


The SSS shader has not been implemented for GPU rendering yet. It will always render black. Update: SSS now works on GPU, so they should look the same.

If you're looking for quick renders, SSS is not a good idea. If you can get away with a simple Diffuse BSDF shader with a bit of Translucent BSDF, that'd be great.


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