# Shared Fence

## Overview

A variety of features may be used to externally synchronize usage of resources on the GPU.

- `wgpu::FeatureName::SharedFenceVkSemaphoreOpaqueFD`
- `wgpu::FeatureName::SharedFenceSyncFD`
- `wgpu::FeatureName::SharedFenceVkSemaphoreZirconHandle`
- `wgpu::FeatureName::SharedFenceDXGISharedHandle`
- `wgpu::FeatureName::SharedFenceMTLSharedEvent`
- `wgpu::FeatureName::SharedFenceEGLSync`

TODO(crbug.com/dawn/1745): additional documentation

Work-in-progress: https://docs.google.com/document/d/1uRGL6vE1mSbpWd2v_KU5--RT5EjTXtruwiC7Ri3ZKz4/edit
