Faking reflection of lamp emission

I create interior visualizations and render with eevee.
To reduce the computational load, we wanted to reflect the reflection of the lamp light source inside the lighting shade without using a point light.
This is useful when the lamp light source is not in the viewport and screen space reflection does not work.
Let’s reproduce this with a shader node.

Screenshot of how the node was constructed.

Set the vertex color to affect only the inside of the lighting shade.


Thank you for your sharing

Thanks your message,this too!