Jump to content
  • 4

Displacement mapping giving strange results


I posted something similar on the rendering part of these forums, but I have been investigating further.....


In the process of trying to understand the new Parallax bump map shader I ran into this peculiar problem with the displacement map shader. I made a brand new texture with a Renderworks brick png as a bump shader image.


The First Column is an extruded rectangle. 

The second is a Nurbs Surface

The Third is the same Extruded rectangle converted to Nurbs Surfaces

The Fourth is a generic Solid made from the third column (using the stitch and trim command)


As you can see the 2nd and third are as you would expect a brick texture to look. The first though, and what led me to try and work out what was wrong in the first place, shows a very Low res pixelated/block like effect, with the mapping reversing itself half way down. The fourth  looks fine but is "vignetted" at the edges. Admittedly a really nice effect but not what I expected. I am assuming this is a bug in 2018.


I have enclosed the file so others can take a look and hopefully offer me some advice if I have done something stupid.




Edited by markdd
  • Like 1

Share this post

Link to post

5 answers to this question

Recommended Posts

  • 0

You have done nothing stupid, I filed this as a bug. I first noticed it when doing some tests on plastic siding. VB-143688

It seems to be semi related to camera position, i noticed it most obviously when i had a camera swoop by a wall with holes cut into it, it sort of rippled like weird amorphous water.

Share this post

Link to post
  • 0

I mean the location the view is currently located, not necessarily a Renderworks Camera object.

Share this post

Link to post
  • 0
1 hour ago, markdd said:

Admittedly a really nice effect but not what I expected.


Ha, isn't that always the case. It is a nice effect and something you couldn't recreate easily.


Share this post

Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


7150 Riverwood Drive, Columbia, Maryland 21046, USA   |   Contact Us:   410-290-5114


© 2018 Vectorworks, Inc. All Rights Reserved. Vectorworks, Inc. is part of the Nemetschek Group.