I have a long girder shape that’s curved is meshed with triangles. Not too heavy. I then mapped an image of a girder with the cutouts being alpha channeled. This works nice but I want to give thickness to the alpha channeled map.
I’m trying to displace a mesh using prb material displacement slot. It only breaks the mesh at the seams but no displacement happens other than that.
I looked at a similar thread and Nathan prescribed custom mesh settings, but since this already is a mesh the settings are greyed out.
I tried custom mesh settings in options but that had no effect I guess other than remeshing this entire complex model to get more geometry is there nothing else to try?
Section of a small girder file attached with textures (I hope).
As you can see, not much is gained here. In Raytraced it will look best, but even then it still isn’t good, here the 2M poly structure. You can also see that the displacement texture isn’t all that great - for instance the rivets are half out, half in.
That little truss is just a tiny, tiny part in this 197 meter airship. I didn’t think it was doable but thought I would give it try and ask the experts. The trussing is only a part of the model. I’ve been able to keep the model slim yet light with this meshing and alpha channel mapping. Perhaps one day I’ll get hardware that could handle an actual model of this.
I’m impressed that cycles does such a nice job on the alpha stuff I’ve tried some other alpha channel truss textures and they worked quite well nice thing is the real time viewport is not bad too.
Thanks for taking a look and for the detailed clarification and tips on displacement.
The small piece worked OK on my machine, but having that expanded to the whole model will require too much memory. I would say it does not give any benefit over actually modelling the truss structure. If you want to do it the ‘easy’ way you could probably set up a Grasshopper definition that does all the finnicky bits.