I don't understand what is wrong with this shader

shader simple_material(
    color Diffuse_Color = color(0.6, 0.8, 0.6),
    float Noise_Factor = 0.1,
    normal Normal = N,
    output closure color BSDF = diffuse_toon(normalize(Normal),1.1,0.0)
   color material_color = Diffuse_Color * mix(1.0, noise(P * 10.0), Noise_Factor);
   BSDF = material_color * diffuse_toon(normalize(Normal),1.1,0.0);

enter image description here

What I'm doing wrong and why the output is black ?

I checked and re-checked everything but still I don't think there is something obviously wrong with this .


1 Answer 1


It seems that you missed one of the following settings:

enter image description here

  • Diffuse color of you OSL input node
  • Tick Open Shading Language in the render settings
  • Set Render device to CPU (GPU can't handle script nodes)

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