Scalable Real-Time Shadows

Directional shadows are a fit problem: fit the smallest light-space representation that covers required caster-to-receiver rays, then spend work on the projection, filter, and updates receivers actually use.

$threejs-choose-skills is an optional multi-system coordinator. Use $threejs-visual-validation for capture/readback evidence.

1. Choose one topology

Compare the same seeded workload, projection, filter, and receiver policy: