What is the difference between the spot light and a “360° lamp”?
A spot light only illuminates the objects in ONE direction, I would need a allround illuminating lanp like in blender.
By default, a positional light radiates in all directions, but you can restrict it to producing a cone of illumination by using GL_SPOT_CUTOFF parameter. To reproduce omni-light effect in the shader is much easier than calculate spot-light effects, because you don’t have to deal with the following parameters:
So, if you have a complete code for the spot-light, just simplify it.