How SatViewer3D renders SpaceX's massive Starlink constellation in 3D without draining client CPU or memory resources.
1. The Draw Call Bottleneck
Rendering thousands of individual satellite entities creates immense CPU-to-GPU draw call overhead.
2. Leveraging GPU Instancing
By maintaining a single mesh geometry in GPU VRAM and passing per-instance 4x4 transformation matrices, draw calls were reduced to 1, achieving silky-smooth rendering.
3. Spotting the 'Starlink Train'
Implemented dedicated preset filters to highlight newly launched satellites traveling in tight single-file orbits.