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I’m running into a weird issue in Blender 4.5. I following a tutorial created the same setup in Geometry Nodes and in the Material Shader, but when I plug the output into the respective viewers, the colors don’t match.

In the Material Shader, the color appears as expected.

In the Geometry Node Viewer, the color looks wrong.

I’ve double-checked the nodes and values, but I can’t figure out why the outputs differ. Has anyone experienced this or know what might be causing it?

Here’s a screenshot of my node setup:

enter image description here

enter image description here

Thanks in advance!

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    $\begingroup$ You didn't show a crucial part of your setup, forcing diagnosis to a guess, but I'm quite certain you evaluate your GN setup on a low resolution grid. Here's an explanation what happens: blender.stackexchange.com/a/337422/60486 $\endgroup$ Commented Nov 13 at 8:28
  • $\begingroup$ Markus is right, geometry nodes need resolution in order to display the same texture. It has 4 vertices = it shows 4 values (each corner). Bottom left is black in both cases, top right is white in both cases, etc... $\endgroup$ Commented Nov 13 at 9:27

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The Viewer node of geometry nodes let you display what value/attribute is, at each element in the domain (by default it is vertices). So if you only have 4 vertices, you'll only see the values on these points. If you increase the resolution of the plane, you increase the number of values you see :

enter image description here

Now the exact same process, increasing the resolution, but without displaying the values so that it is easier to see :

enter image description here

So the only way is seeing the exact same thing as your shader, would be to have a huge amount of vertices. So keep in mind that the Viewer node only display values per element. Shaders on the other hand can display any texture or pattern, no matter the vertex count.

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