# VkPipelineBinaryKeyKHR(3) Manual Page

## Name

VkPipelineBinaryKeyKHR - Structure specifying a key to a pipeline binary

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## C Specification

The `VkPipelineBinaryKeyKHR` structure is defined as:

    // Provided by VK_KHR_pipeline_binary
    typedef struct VkPipelineBinaryKeyKHR {
        VkStructureType    sType;
        void*              pNext;
        uint32_t           keySize;
        uint8_t            key[VK_MAX_PIPELINE_BINARY_KEY_SIZE_KHR];
    } VkPipelineBinaryKeyKHR;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `keySize` is the size, in bytes, of valid data returned in `key`.

- `key` is a buffer of opaque data specifying a pipeline binary key.

## Description

Any returned values beyond the first `keySize` bytes are undefined. Implementations must return a `keySize` greater than 0, and less-or-equal to `VK_MAX_PIPELINE_BINARY_KEY_SIZE_KHR`.

Two keys are considered equal if `keySize` is equal and the first `keySize` bytes of `key` compare equal.

Implementations may return a different `keySize` for different binaries.

Implementations should ensure that `keySize` is large enough to uniquely identify a pipeline binary.

Valid Usage (Implicit)

- VUID-VkPipelineBinaryKeyKHR-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PIPELINE_BINARY_KEY_KHR`

- VUID-VkPipelineBinaryKeyKHR-pNext-pNext
  `pNext` must be `NULL`

## See Also

VK_KHR_pipeline_binary, VkPipelineBinaryKeysAndDataKHR, VkStructureType, vkGetPipelineBinaryDataKHR, vkGetPipelineKeyKHR

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0