# VkVideoReferenceSlotInfoKHR(3) Manual Page

## Name

VkVideoReferenceSlotInfoKHR - Structure specifying information about a reference picture slot

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## C Specification

The `VkVideoReferenceSlotInfoKHR` structure is defined as:

    // Provided by VK_KHR_video_queue
    typedef struct VkVideoReferenceSlotInfoKHR {
        VkStructureType                         sType;
        const void*                             pNext;
        int32_t                                 slotIndex;
        const VkVideoPictureResourceInfoKHR*    pPictureResource;
    } VkVideoReferenceSlotInfoKHR;

## Members

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

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

- `slotIndex` is the index of the DPB slot or a negative integer value.

- `pPictureResource` is `NULL` or a pointer to a VkVideoPictureResourceInfoKHR structure describing the video picture resource associated with the DPB slot index specified by `slotIndex`.

## Description

Valid Usage (Implicit)

- VUID-VkVideoReferenceSlotInfoKHR-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_VIDEO_REFERENCE_SLOT_INFO_KHR`

- VUID-VkVideoReferenceSlotInfoKHR-pNext-pNext
  Each `pNext` member of any structure (including this one) in the `pNext` chain must be either `NULL` or a pointer to a valid instance of VkVideoDecodeAV1DpbSlotInfoKHR, VkVideoDecodeH264DpbSlotInfoKHR, VkVideoDecodeH265DpbSlotInfoKHR, VkVideoEncodeAV1DpbSlotInfoKHR, VkVideoEncodeH264DpbSlotInfoKHR, VkVideoEncodeH265DpbSlotInfoKHR, or VkVideoReferenceIntraRefreshInfoKHR

- VUID-VkVideoReferenceSlotInfoKHR-sType-unique
  The `sType` value of each structure in the `pNext` chain must be unique

- VUID-VkVideoReferenceSlotInfoKHR-pPictureResource-parameter
  If `pPictureResource` is not `NULL`, `pPictureResource` must be a valid pointer to a valid VkVideoPictureResourceInfoKHR structure

## See Also

VK_KHR_video_queue, VkStructureType, VkVideoBeginCodingInfoKHR, VkVideoDecodeInfoKHR, VkVideoEncodeInfoKHR, VkVideoPictureResourceInfoKHR

## 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