In the patch below you can turn on two lights. Both of them are very dim and tiny when turned on in "solo". However when both lights are turned on the result is much greater as a sum of both parts.

However there are more issues in the patch:

- first of all there is a huge difference between non-captured and captured version (this is an old problem)

- if you turn the light on and off the image on the screen is not the same as it was before. So basically when you turn the light on for the first time it irreversibly changes the render/image.

- as mentioned at the beginning, two lights togeher are not the sum of two lights but something much bigger

Lights.zip

In the patch below you can turn on two lights. Both of them are very dim and tiny when turned on in "solo". However when both lights are turned on the result is much greater as a sum of both parts. 

In the patch below you can turn on two lights. Both of them are very dim and tiny when turned on in "solo". However when both lights are tur

lights-problems

What I most necessary need is a solution to this problem:

"two lights togeher are not the sum of two lights but something much bigger"

light cheese + light bread == cheeseburger light?

arithmetically... maybe something like this ...

Sorry Roman but I don't understand your answer.

What I want is two lights but what I get is a mega-light... as it is hopefully clearly explained in the patch. In other words I want is

light cheese + light bread = light cheese + light bread

What I want is two lights but what I get is a mega-light... as it is hopefully clearly explained in the patch.  In other words I want is

Lights problems