Building Volumetric Light Shafts with Real IES Profiles

You know that feeling when the street lamps on a hazy evening cast these particular patterns of light? I've always been fascinated by those effects, so I decided to build a real-time volumetric lighting system using Qt 6.11's graphics capabilities, leveraging its QML shader integration and 3D rendering pipeline to recreate them with actual IES profiles.

Streetlight patterns in the evening haze