How to make a driver from a value resulting of calculation in geometry nodes, to drive a parameter in a shader?

Asked Oct 28 '23 at 09:27

Active Oct 28 '23 at 09:27

Viewed 88 times

In geometry node, I made a quick setup to calcul the distance between my geometry and the camera. I'd like to get the result of this calculation to make a driver, for driving a scale maping parameter of a shader for exemple. How can I get the "result"? Is there a way to display the result as numbers and copy it as new driver?

asked Oct 28 '23 at 09:27

Gilles

Does this answer your question? Passing GeoNodes attribute to Shader frame offset – Markus von Broady Oct 28 '23 at 10:27
Thank you, yes, but a very complex solution from my point of view. This kind of thing is done in 2 clicks with houdini – Gilles Oct 28 '23 at 11:17
There isn't a 2-click solution, unfortunately. – Markus von Broady Oct 28 '23 at 13:15
At first sight, it doesn't look as if you need a driver, just write the camera-proximity as an attribute, read it, and do all the math in the shader? (Actually, you could get camera-proximity entirely in the shader and not use GN at all) Am I missing something? – Robin Betts Oct 28 '23 at 17:07
You're right, but I was wondering if my solution could be possible, I find it more simple for optimisation , one place to control many things... But I think the camera proximity in shader graph give the proximity with the shader and not with the object, am I right? – Gilles Oct 29 '23 at 19:34
You can use Attribute node in object mode and location name to get the object's location inside the shader. – Markus von Broady Oct 30 '23 at 08:32

How to make a driver from a value resulting of calculation in geometry nodes, to drive a parameter in a shader?

0 Answers0