Use Modified Position In Custom Node In Shader Graph?

Jick87 · Dec 9, 2018

I posted this question in the Shader Graph feedback thread but I think it has/will gotten lost in the tons of other posts, so I figured I might try spinning it off into its own post...

Jick87 said: ↑

Is it possible to get the post-modified vertex position in Shader Graph for use in custom nodes? I have some nodes fed into the Position slot on an HDLit master node which modifies the position from standard. I then try to use SAMPLE_TEXTURE2D in a custom node utilizing Binding.ObjectSpacePosition to do some custom UV stuff based on the object-space position but it seems in that case the position is not the modified position, but rather the original unmodified one, so the texture does not follow the vertexes.

I had assumed the position you feed into the Position slot would modify the actual position value used everywhere else in the shader, but that doesn't seem to be the case, at least not in a custom node it seems like...
Click to expand...

So basically, I need to get the modified position value in a custom node, but using the usual position input slot type doesn't seem to give the modified version but instead the original unmodified position.

Could this be a bug/oversight or am I just doing something wrong?

Thanks for any help!

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Use Modified Position In Custom Node In Shader Graph?

Jick87