Hey, I've been trying to figure out how to make some regular light2ds (with mode "add") work alongside a light mask in a specific way, this is the setup:
I have a sprite which is illuminated by multiple light2d sources, which work as expected, and I'm using a light mask to effectively "hide" a part of said sprite (using a transparent rectangle as a texture) alongside any applied illumination it has.
Basically, I'm trying to do something like this:

But using three lights, the sprite and a mask I'm getting this result:

Notice how the two lights at the bottom are bleeding through the mask, and revealing the actual texture.
I've already tried assigning the same lightmask property to the the Light2d nodes as the mask's itemcull_mask, but that doesn't seem to be doing anything.
Is there a way for the mask to also affect the lights? Or is there a better approach I could use to achieve this effect?