I am not able to get a satisfactory result with Neon when using Decals.
This polysurface is ok when rendered by Rhino
but when raytraced by Neon:
Here is the Lands 2.zip (1.3 MB) Rhino file (texture included)
Raytracing the polysurface with Neon took me 16min and 1min raytracing the meshed polysurface, so you may use the meshed surface.
Rhino Options/Rendering/Texture size = 2048
May I have your help ?