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VRay Baker projected normal map issue

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  • VRay Baker projected normal map issue

    Hello,
    We would like to use vray baker to create projected normal maps (highpoly to lowpoly). The aim is to use the normal maps for real-time PBR shader. We encountered a problem that we couldn't solve. Here is an overview of the problem (shown in Blender):

    In the vray bump normal maps, the tessellation of the low poly object stands out. In comparison, the LabsMapsBaker from sidefx. We have found that if the lowpoly does not contain any normals, the normal map is not displayed correctly in the pbr shader. As soon as a normal node is assigned to lowpoly, the normal output looks correct in LabsMapsBaker (top right image).
    In comparison, in VRay Baker it doesn't seem to make a difference whether the normals node is activated or not - the output looks the same in both cases.​

    Here is the houdini example setup:
    Click image for larger version  Name:	thumb_88786.jpg Views:	0 Size:	4.8 KB ID:	1224811
    The baking settings are all default​.If needed I can upload an example project.

    I would be very grateful for any advice or ideas.
    Best regards
    Mario​
    Attached Files
    Last edited by daa; Yesterday, 06:38 AM.

  • #2
    Hello daa , can you share the hip file?
    Georgy Chakarov | QA
    www.chaosgroup.com
    georgy.chakarov@chaosgroup.com

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    • #3
      Sure, here is the file attached.
      Attached Files

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      • #4
        Hello, I was able to fix the problem. The problem was that the polygons on the flat surface were not really flat.​

        Click image for larger version

Name:	houdinifx_utdfQ5t2nV.png
Views:	0
Size:	377.7 KB
ID:	1224956
        Attached Files
        Georgy Chakarov | QA
        www.chaosgroup.com
        georgy.chakarov@chaosgroup.com

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