Displacement Mapping Strangeness [BLENDER 2.41]

Support Materials and Textures
1

Hi,
I am having trouble while attempting some displacement mapping on a 32x32 grid. It seems if I use a gradient map that has curves vertex spikes occur in the render. Also if I set the grid resololution higher the spikes get worse. Roughness increases as resolution gets higher.
The gradient maps I am using and sample renders are listed below…

gradient maps…
http://www.xila-art.com/temp/molds.jpg
http://www.xila-art.com/temp/puzzlePiece.jpg
sample renders… (last file here is where grid resolution increased)
http://www.xila-art.com/temp/render_molds.jpg
http://www.xila-art.com/temp/render_puzzlepiece.jpg
http://www.xila-art.com/temp/render_puzzlepiece_64x64.jpg

Anyone have a clue as to how to smooth things out?

Thanks --Andrew

2

On the last one, nor needs to be turned off and the nor value all the way down for the displacement texture settings

3

Ok thanks that helped some…
http://www.xila-art.com/temp/render_puzzlepiece_128x128.jpg
above is the render of puzzle piece after increasing grid res to 128 and moving nor to zero.
Still some roughness here.
Can anything be done about this?
– Andrew

4

You need a really, really high resolution for perfect displacement, set smooth will help some.

Better yet, get 2.45 and use the displacement modifier and use a subsurf modifier after that.