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  • rt gpu displacement issue

    ive got some bricks that render fine in production renderer and rt cpu, and also fine in rt gpu without displacement.

    when i enable displacement the bricks render black. i can see the displacement appears to be working, from the deformed brick silhouette, but i get flat black shading.

    the material (for testing purposes) is a simple light grey vraymtl.

    the displacement is not so simple, 2 nested mix maps, mixing noise and a couple of bitmaps.

    however i was lead to understand that since the displacement is precalculated on the cpu before rendering, there should be none of the limitations you get with using those maps for other things in rt gpu?

  • #2
    Can you show me?

    Best regards,
    Vlado
    I only act like I know everything, Rogers.

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    • #3
      im uploading a max file to wetransfer.. its got some included maps so will take a wee while to send. sending to vlado@chaosgroup.com.

      in the meantime here are some test images.

      Click image for larger version

Name:	ADV_with displacement.jpg
Views:	1
Size:	295.0 KB
ID:	859170Click image for larger version

Name:	RT CPU_displaced.jpg
Views:	1
Size:	375.7 KB
ID:	859169Click image for larger version

Name:	RT GPU_no displacement.jpg
Views:	1
Size:	279.4 KB
ID:	859171Click image for larger version

Name:	RT GPU_displaced.jpg
Views:	1
Size:	389.0 KB
ID:	859172

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      • #4
        Would it be possible to send the link to: support@chaosgroup.com as well, so we could have a look?
        Zdravko Keremidchiev | chaos.com
        Chaos Support Representative | contact us

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        • #5
          ok i just sent you the same wetransfer link.

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          • #6
            ive sent the file, please also note the displacement global switch seems broken in the latest beta.

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            • #7
              Thank you for sending us the scene. It was a known issue which we are working on.

              please also note the displacement global switch seems broken in the latest beta.
              Also a known issue we are working on it as well.
              Last edited by Zdravko.Keremidchiev; 15-12-2015, 01:50 AM.
              Zdravko Keremidchiev | chaos.com
              Chaos Support Representative | contact us

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