Download the script and run it from the Scripting menu in 3ds Max by selecting "Run Script".

In the context of 3ds Max, a dappled light generator is a tool (script, texture map, or plugin) that simulates the pattern of light filtering through an occluding medium—leaves, window blinds, grilles, or water ripples.

It wasn’t just light. It was memory. The dapples shifted, breathed. One patch of light on a mossy root looked familiar . It was the exact shape and warmth of the light that fell on her grandmother’s porch when she was seven, in that lost October before the dementia took her. Another dapple, falling across a stone, had the melancholy geometry of the last afternoon she spent with her old dog under the backyard sycamore.