Exploring the most common problems in Geometry Nodes
The first problem we’ll be troubleshooting is what you can do if your shading behaves weirdly.
My shading behaves weirdly
Shading issues are common in Blender, so it’s important to address how to solve these. There are many possible causes of your mesh behaving weirdly. This can range from intersecting meshes and flipped normals to choosing the incorrect shading algorithm. Let’s look at some probable causes for shading issues.
Intersecting meshes
The first cause of shading issues is that meshes are intersecting with each other. You can check this by carefully looking at each part of your Geometry Nodes tree. This can be the case when you are using a Duplicate Elements node, a Join Geometry node, or a Mesh Boolean node.
When there are intersecting meshes, you might notice a phenomenon called Z fighting. This is when you see a flickering mesh in your model.
Normally, this does not happen a lot...