How to view changes made to a texture with Nodes, in Blender Render? I am trying to edit a texture with nodes, in blender render mode.

And I would like to see what my nodes are doing to the texture.

I think I need a viewer node for that, but it wont work.

Or is the only way to view my changes is to re-render the scene?

Im following this tutorial
Your changes should be visible on Material and Render shading on the 3d viewport