Light Painter Add-on
Light Painter — a new Blender add-on that lets you paint light directly in the viewport, the same way you paint in Photoshop.
Pick a light, add a layer, and paint. Brushes, gradients, selections, and layers with blend modes — all working in real time. No geometry nodes, no shader wiring, no re-exporting textures. Works with any number of lights in your scene.