Pass a different value to shader for each vertex

[octobear]

I have a 100 GL_POINTS and am running a shader on each. I have an array of 100 floats in my main program and I want to pass a single float from that array to the shader for each vertex. Is there some way to bind a value from my array to a vertex so each individual vertex gets the same value every time? How can I accomplish this?

[Dark_Photon]

@octobear

I have a 100 GL_POINTS and am running a shader on each.
I have an array of 100 floats in my main program and I want to pass a single float from that array to the shader for each vertex.
Is there some way to bind a value from my array to a vertex so each individual vertex gets the same value every time?

Yes, glVertexAttribPointer(). See Vertex Specification in the OpenGL wiki.