VR Development Fundamentals

This skill provides comprehensive guidance for developing virtual reality applications, covering the full stack from rendering pipelines to input handling, performance optimization, and cross-platform deployment. It is designed for developers building VR experiences on modern headsets including Meta Quest, Apple Vision Pro, PlayStation VR2, and PC VR platforms.

## Key Points

- **Frame rate targets**: 72 Hz minimum, 90 Hz recommended, 120 Hz ideal
- **Stereoscopic rendering**: Two viewpoints separated by interpupillary distance (IPD), typically 60-68mm
- **Low latency**: Motion-to-photon latency must stay below 20ms
- **Foveated rendering**: Reduce peripheral detail to save GPU cycles
- **3DoF (3 Degrees of Freedom)**: Rotation only (pitch, yaw, roll)
- **6DoF (6 Degrees of Freedom)**: Rotation + position (x, y, z)
- **Inside-out tracking**: Cameras on the headset track the environment
- **Outside-in tracking**: External sensors track the headset
1. **Choose your runtime**: OpenXR is the industry standard cross-platform API
2. **Select a rendering approach**: Forward rendering preferred over deferred for mobile VR
3. **Configure quality tiers**: Different settings for standalone vs. PC VR
4. **Set up performance profiling from day one**