GLSL geometry shaders and attributes

OpenGL
1

So I’ve spent the last couple of hours trying to get my geometry shader to recognize a vertex attribute.

This single line in the geometry shader makes a compilation error:

attribute float nodesizes;

And I get the error “OpenGL requires geometry inputs to be arrays”

What is then, the proper way to put attributes into geometry shaders?

2

It has to be an array declaration because geometry shader inputs are not vertices but primitives, which comprise of one or more vertices.

Maybe you should try this:

attribute float nodesizes[];
3

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