C Specification

Pipeline cache objects can be merged using the command:

// Provided by VK_VERSION_1_0
VkResult vkMergePipelineCaches(
    VkDevice                                    device,
    VkPipelineCache                             dstCache,
    uint32_t                                    srcCacheCount,
    const VkPipelineCache*                      pSrcCaches);

Parameters

  • device is the logical device that owns the pipeline cache objects.

  • dstCache is the handle of the pipeline cache to merge results into.

  • srcCacheCount is the length of the pSrcCaches array.

  • pSrcCaches is a pointer to an array of pipeline cache handles, which will be merged into dstCache. The previous contents of dstCache are included after the merge.

Description

Note

The details of the merge operation are implementation-dependent, but implementations should merge the contents of the specified pipelines and prune duplicate entries.
Valid Usage

  • VUID-vkMergePipelineCaches-dstCache-00770
    dstCache must not appear in the list of source caches

Valid Usage (Implicit)

  • VUID-vkMergePipelineCaches-device-parameter
    device must be a valid VkDevice handle

  • VUID-vkMergePipelineCaches-dstCache-parameter
    dstCache must be a valid VkPipelineCache handle

  • VUID-vkMergePipelineCaches-pSrcCaches-parameter
    pSrcCaches must be a valid pointer to an array of srcCacheCount valid VkPipelineCache handles

  • VUID-vkMergePipelineCaches-srcCacheCount-arraylength
    srcCacheCount must be greater than 0

  • VUID-vkMergePipelineCaches-dstCache-parent
    dstCache must have been created, allocated, or retrieved from device

  • VUID-vkMergePipelineCaches-pSrcCaches-parent
    Each element of pSrcCaches must have been created, allocated, or retrieved from device

Host Synchronization

  • Host access to dstCache must be externally synchronized

Return Codes
On success, this command returns

  • VK_SUCCESS

On failure, this command returns

  • VK_ERROR_OUT_OF_HOST_MEMORY

  • VK_ERROR_OUT_OF_DEVICE_MEMORY

See Also

VK_VERSION_1_0, VkDevice, VkPipelineCache

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