I’m using a VrayDisplacementMod on a brick facade in which I want alternating rows of 14mm and 40mm bricks. On the sides of the window the 40mm bricks aren’t allowed to be displaced. So that’s why I have to cut the faces and only have the front face be displaced. That gives me ‘open holes’ on the sides, as illustrated with the attached picture from the Vray docs. Is there a way to close these without being forced to have the same displacement continue around the corner?
The only thing I can think of is to have just a slither of black on the edge of the displacement map so it returns to the 14mm level. This is very tedious to do because I have a lot of different facades and the textures are tileable.
The only thing i can think of is to turn on “keep continuity” in the displacement modifier, and raise the value until the holes are capped.
It may not look pretty, though.
Your best bet is to make edge-compliant displacement maps, so to drive the blend as you please, and then tile the rest of the surfaces as normal.
This might be a bit less of a headache than having to create custom maps…
In this example the left piece represents the problem area.
Its displacement is using a copy of the same tileable map but set to not tile.
It is also cropped on one side to allow it to cap itself, and is adjusted and matched to the right side by a uvw map.
Hi fixeighted, could you please show me the map(s) you used? I’m not sure I 100% understand how you’re using the exact same map but also cropped it on one side to allow it to cap itself. Does it mean it’s a different displacement map which is able to crop itself because the edge of it is black?
Keep continuity would work, it’s meant to tie together the sides of, f.e. a cube, not dissimilar to the edges of a window sill.
Alas, you may find it easier to use an edge texture, invert it, and multiply it by the displacement in a vray comptex.
See attached results.
It’s not a keep continuity thing Lele…Van doesn’t need displacement on the return of the windows/doors, only the front faces
So a tileable tex gives holes, hence my clever hacky approach…I earned my cake today…until you magic up a much more elegant solution ofc
Try multiplying your texture with a VRaySoftbox texture with a black “frame” or similar higher res texture made in another app so that the edge of your map is black (or 50% grey is you are using that as your no-displace level).
That VRayCompTex is set to Multiply. You could just as easily use the softbox map as a mask (inverted) with a Composite node and use it to put 50% grey on the edges with a VRayColor.
I would just create a planar UVWMap for your building face and then bring that into an image editor in order to add the borders. It could be done with an erode/dilate type operation, or simply a path or selection that you stroke in Photoshop, etc.You might have to blur it slightly to keep the edges from getting kind of rough. Note in my sample that the edges are actually slightly angle.
You may also be able to get it to work with something like like a VRayDirt or a VRayDistanceTex. However, I think a simple image map would render faster.
We got it to work! We tried a VrayDirt but it didn’t even render and was stuck on compiling geometry. A colleague mentioned a ColorEdge map from iToo, which basically does the same but does render without any issues. Thanks a lot for all the input :).
Am I the only one who often gets unwanted inner polygon edges with VRayEdgesTex? Even with the hidden edges turned off (the default) I often see inner polygon edges that I don’t want to see. Maybe it is some bad stock geometry, but I never found how to fix it (welding didn’t help.. the object shaded fine otherwise, etc.)
