hello . i'm trying to rebuild a zdepth shader in karma. in houdini i usually get Pz from the globals node and fit range Pz between minz and maxz to get a value between 0 and 1 into Cd. how can i do that in karma/solaris ?

Put down a Karma Ray Import VOP and set it to "ray:hitdist", and a mtlx range after that.

protozoan
Put down a Karma Ray Import VOP and set it to "ray:hitdist", and a mtlx range after that.

Hit distance is the slant distance, which is the length of P - I in a VEX material. For Pz, which is the Z-axis distance, you want "ray:hitPz"

Edit:
Note this only works for Karma CPU, for XPU you're stuck exporting the depth AOV and remapping in post.

having depth in world units and potentially remapping in post is usually more ideal anyway, at least it's more consistent for depth based comp effects like DOF or Fog
since if it's already remapped to 0-1 there is no easy way to know the real depth

jsmack
Note this only works for Karma CPU,

"ray:hitPz" should work with XPU
https://www.sidefx.com/docs/houdini/solaris/karma_xpu.html#summary [www.sidefx.com]

are you finding that it does not?