Projected light

Voltage.DeferredLighting.ProjectedLight illuminates the deferred light buffer through the transparent pixels of a board tilemap. It never draws lines into the scene's color buffer. The light shades receiving surfaces using their normal maps. Existing point, spot, sprite and room lights keep their behavior.

Add the component on the scene's Lighting render layer. Assign Boards, then author Windows as rectangles in that tilemap's local pixel coordinates. Opaque pixels block light; partially transparent pixels attenuate it. Stacked tiles, cell orientation and the board entity's transform are respected. RoomArea is a world-space receiving rectangle that prevents illumination crossing into another room. Solid colliders on OcclusionLayerMask also block the projection.

Setting	Purpose
Direction	Direction away from the window in board-local coordinates
ProjectionDistance	Separation between the mask and the receiving surface
Magnification	Expansion of the projected openings with distance
Softness	Width of the penumbra at the mask, in pixels
Color / Intensity	Light hue and strength
NormalZ	Height of the light direction above the 2D receiving surface

The board reference and all controls are serialized and available in the inspector. The mask and light texture are generated at runtime, cached, and released with the scene. Moving or painting the boards and changing static occluders invalidate the field; color and intensity edits do not rebuild it.

This is a projected 2D surface light with a virtual depth separation, rather than a 3D geometry or volumetric simulation. Receiver clipping is rectangular; very large receiving areas are limited to 512 by 512 field samples. Prefer separate lights for different rooms. Set the occlusion mask to static room geometry to avoid rebuilding the field every time an actor moves.