COP network to MAT/SHOP referencing not working?

[davpe 205]

Hi, can anybody confirm or invalidate my suspicion that op: expression in shaders context (mat or shop) cuurently doesn't work? I know syntax has been a bit inconsistent between different Houdini versions but right now in 16.5 it doesn't seem to work at all for me.

i tried:

op: /obj/copnet/OUT

op: "/obj/copnet/OUT"

"op: /obj/copnet/OUT"

op:`opfullpath('/obj/copnet/OUT')`

and many other mutations of the same thing.

anybody?

thanks, D.

 

file attached just for case

copReferencing.hiplc

[Atom 1,442]

Have you checked your output size from COPs? (I don't have Houdini in front of me so I can't review your file) There is a size limit for COPs output on an Indie license. If you exceed that output size then the transfer will fail. Try a smaller size COPs output like 1024x1024...?

Edited November 22, 2017 by Atom

[davpe 205]

good point, but no, it still doesn't work

[malexander 409]

op:/obj/copnet/OUT

is what you want. It seems to be an issue with IFD generation, as if I promote the texture map parameter to a parm on the material builder and tag it with ogl_tex1, I can see the cop texture in the viewport. So the COP half of it is working properly.

[davpe 205]

47 minutes ago, malexander said:

op:/obj/copnet/OUT

that is what I tried initialy. then I was trying countless possible variations on that until I came to conclusion it probably doesn't work in 16.5.

is it working for you guys in hou 16/16.5? that is my general question, whether it is a bug or something wrong on my side.

[willrmiller 0]

I've run into this exact problem (16.5).  Anyone found a solution?

[toadstorm 343]

This works in 16.5 if your COPnet is in /img/, or if the COPnet is inside the geo container of the object that is being rendered. So possibly this is a problem of the COPnet texture not being included in the IFD write when it's in the /obj/ root?

Just tested in 16.0.736... it doesn't seem to work correctly here either if the COPnet is in /obj/ root. Also make sure that your path doesn't end in a slash after "OUT".

Edited February 10, 2018 by toadstorm

[davpe 205]

thanks for posting your finds toadstorm, that's certainly helpful! guess it's worth submitting as a bug to sidefx.