eng doc

docs/user/cameras/README.md

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+# Cameras — user documentation
+
+The **viewpoint side**: the active camera, the orbital controller, unified input, and the
+GPU-driven pipeline (frustum culling, LOD) that the camera drives.
+
+| Page | Topic |
+|------|-------|
+| [Camera & input](camera-input.md) | Active camera, `CameraController` (orbit/zoom/reset), unified keyboard/mouse state, recipes |
+| [GPU-driven rendering](gpu-driven.md) | GPU world matrices + indirect draws, opt-in frustum culling, LOD, debugging |
+
+Example folder: [`lib/examples/cameras/`](../../../lib/examples/cameras/README.md)
+(`culling`).
+
+## Links
+
+- [User documentation index](../README.md) · [Quickstart](../quickstart.md) · [Examples](../examples.md)