# IOSurfaceRef(3) Manual Page

## Name

IOSurfaceRef - Metal IOSurfaceRef type reference

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## C Specification

The type IOSurfaceRef is defined in Apple’s CoreGraphics framework, but to remove an unnecessary compile time dependency, an incomplete type definition of IOSurfaceRef is provided in the Vulkan headers:

    // Provided by VK_EXT_metal_objects
    typedef struct __IOSurface* IOSurfaceRef;

## See Also

VK_EXT_metal_objects

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0