Viewport culling to reduce draw load
Frustum culling avoids submitting geometry that cannot appear on screen. This sample visualizes which objects remain in the working set as you pan and zoom, tying directly to Lesson 8 — Optimize performance.
Use it as a reference when you profile CPU/GPU time on boards with thousands of shapes.
We can reduce the number of draw calls with culling, see: Performace optimazation
total: 0 culled: 0