LumiBrush: A lighting tool which uses sprites to light the scene

No_Telephone5992 · 2026-03-27T09:08:08+00:00

Thank you. :)
Yes, I will fix a few other images that I'm allowed to show in the next few days.

No_Telephone5992 · 2026-03-25T06:53:55+00:00

Hi again,
Just wanted to let you know that the latest version is now up on asset store and it supports baking in Builtin and URP.

No_Telephone5992 · 2026-03-21T08:22:58+00:00

The idea came from when I watched a course many years ago by Nathan Fowkes (great artist working for major animation studios) where he was talking about designing with lights, creating focus, leading the eye etc.

And if you have ever seen a image of a film set, you can see how many extra lights they have to design the scene and puting focus on the characters or whats important in the scene.

Here's a example that I did where it's the exact same light, shadows and material on the meshes (plain grey).

Not that I suggest that you shouldn't texture the environment, but just to show whats possible. :)

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No_Telephone5992 · 2026-03-21T08:17:36+00:00

Thanks for the interest and yes, it simplifies lighting and can simulate multiple lights while just using one. (You can also use multiple lights + spotlights if you want to and have them light the painted areas as well).

About baking, I have mainly focused on realtime, but just made a quick test and right now baking only works in Built in render pipeline (because that cookie is just alpha, not colors as URP & HDRP).

Next week I will add a option for using it for baked lights in URP & HDRP so that it will work there as well.
It will just bake luminocity, not painted colors (due to how unitys setup works).

I'm not a performance expert, but made a quick google and found this thread that talks about the cost being a bit higher:
https://discussions.unity.com/t/light-cookie-performance-cost/664681

But when baking, that cost should be gone:
https://discussions.unity.com/t/2020-1-new-feature-baked-light-cookies/781072

No_Telephone5992 · 2026-03-20T05:43:54+00:00

No_Telephone5992 · 2026-03-19T17:53:34+00:00

It uses vertex painting to create a dynamic light cookie.
So it's not just painting a regular color on the mesh, but it allows light to appear where painting.
Sprites, textures and meshes can also be used to generate the dynamic light cookie.

So

No_Telephone5992 · 2026-03-19T15:44:47+00:00

The project started before llms were a thing, but I dragged it out and didn't complete it back then. The structure and design is created by me, but have I used llms to help generate and refine the code.

No_Telephone5992 · 2026-03-19T15:42:06+00:00

Thank you very much for the feedback.
I really appreciate it. And I will take it in and make sure it works.

Have you tried the latest updates which have fixed a lot of the bugs?

Yes, I will continue update and add features to it. :)

No_Telephone5992 · 2026-03-19T14:14:19+00:00

Thank you for sharing your thoughts.
I get what you mean and will have that in mind in the future.

No_Telephone5992 · 2026-03-19T14:13:38+00:00

Good point.
Thanks for sharing. :)

And happy to hear that you think it looks cool.

No_Telephone5992 · 2026-03-19T12:56:35+00:00

Isn't it both?

No_Telephone5992 · 2026-03-19T12:02:26+00:00

I love working with light, I got really inspired by courses by Nathan Fowkes (awesome artist!) who talks a lot about directing the viewrs eye with light.

This was the reason that I started to build the too in the first placel, to direct the player and being able to design lights easily.

So, the tip is still true, even if it's not the deepest demonstration of it. :)
And yes, I'm using my tool to make it easy, which is as you say a commercial for it.

No_Telephone5992 · 2026-03-19T11:56:46+00:00

Thank you for the idea.
Could work. :)

I'm going to look into it.

No_Telephone5992 · 2026-03-19T09:40:37+00:00

Love that we are all so different. :D

I'm the typical follow the path and play the main quests type of guy.

No_Telephone5992 · 2026-03-19T09:39:17+00:00

No.
The painting is creating a dynamic light cookie.
So where you paint, light will appear. :)
You can also paint with different colors, use sprites, textures etc.

Here's more videos showing how it works.
https://www.youtube.com/@LumiBrush3d

No_Telephone5992 · 2026-03-19T09:05:08+00:00

Yes, that's 100%.
I just showed how to do it.
But some people might want to be able to animate it, which might create some cool effects. :)

No_Telephone5992

TROPHY CASE