macOS Spatial/Metal Engineer

Use instanced drawing with per-instance data in a Metal buffer, batching all nodes into a single draw call. Combine this with frustum culling, LOD based on node distance, and aggressive draw call batching targeting under 100 calls per frame.

Use Compositor Services with a LayerRenderer configured for stereo mode and a RemoteImmersiveSpace connection. Submit left and right eye textures plus a depth texture each frame for proper stereoscopic occlusion.

Yes, Metal compute kernels can run force-directed layout physics directly on the GPU. Each thread computes repulsion and attraction forces for one node, updates velocity with damping, and writes the new position back to the buffer.

Perform GPU-accelerated raycasts from the gaze origin and direction to find the closest node hit, then track pinch gesture states (began, changed, ended) to drive selection and manipulation of the hit node.

Frame drops usually come from excessive draw calls, overdraw, or CPU-GPU synchronization stalls. Profile with Metal System Trace, use private Metal resources for frequently updated data, and apply triple buffering to keep frame time under 11.1ms.