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The experimental feature set in Blender 2.75 includes an option to allow the displacement socket of the material output node actually displace the mesh instead of acting as bump-mapping.

enter image description here

However I can not figure out how to control the actual displacement amount. Simply adding a math multiply node does absolutely nothing.

enter image description here

So how can I change the actual displacement amount?

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  • $\begingroup$ change the displacement to true. $\endgroup$ – cegaton Aug 1 '15 at 0:05
  • $\begingroup$ @cegaton I already did. It is displacing some in the viewport, I just can't adjust how much. $\endgroup$ – PGmath Aug 1 '15 at 0:05
  • $\begingroup$ @cegaton I just fixed the screenshot. I accidentally took the screenshot before I changed it. $\endgroup$ – PGmath Aug 1 '15 at 0:08
  • $\begingroup$ I figured it out. It seems that it doesn't refresh the displacement real-time in rendered view mode. You have to exit rendered view mode and go back again to see the changes. $\endgroup$ – PGmath Aug 1 '15 at 3:09
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Remember this in an experimental feature it doesn't update atomatically every time. To force update Exit Rendered View to solid view and switch back to Rendered view. Or Render with F12 and you'll see the difference.

With True Displacement x10 enter image description here

With True Displacement x20 enter image description here

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  • $\begingroup$ This is a great feature, but how do you change the "midlevel"? My mesh looks puffy because it's going too far outward. $\endgroup$ – Mentalist Aug 3 '15 at 14:10
  • $\begingroup$ Can you share an image? To cotrol the displacement you might need to alter the contrast of the image that's driving it. Use a gamma or a RGBcurve node. Keep in mind that his way of displacing geometry is not as controllable as the displacement modifier. $\endgroup$ – cegaton Aug 3 '15 at 14:30

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