# VkInputAttachmentAspectReference(3) Manual Page

## Name

VkInputAttachmentAspectReference - Structure specifying a subpass/input attachment pair and an aspect mask that can: be read.

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## C Specification

The `VkInputAttachmentAspectReference` structure is defined as:

    // Provided by VK_VERSION_1_1
    typedef struct VkInputAttachmentAspectReference {
        uint32_t              subpass;
        uint32_t              inputAttachmentIndex;
        VkImageAspectFlags    aspectMask;
    } VkInputAttachmentAspectReference;

or the equivalent

    // Provided by VK_KHR_maintenance2
    typedef VkInputAttachmentAspectReference VkInputAttachmentAspectReferenceKHR;

## Members

- `subpass` is an index into the `pSubpasses` array of the parent `VkRenderPassCreateInfo` structure.

- `inputAttachmentIndex` is an index into the `pInputAttachments` of the specified subpass.

- `aspectMask` is a mask of which aspect(s) can be accessed within the specified subpass.

## Description

This structure specifies an aspect mask for a specific input attachment of a specific subpass in the render pass.

`subpass` and `inputAttachmentIndex` index into the render pass as:

    pCreateInfo->pSubpasses[subpass].pInputAttachments[inputAttachmentIndex]

Valid Usage

- VUID-VkInputAttachmentAspectReference-aspectMask-01964
  `aspectMask` must not include `VK_IMAGE_ASPECT_METADATA_BIT`

- VUID-VkInputAttachmentAspectReference-aspectMask-02250
  `aspectMask` must not include `VK_IMAGE_ASPECT_MEMORY_PLANE_i_BIT_EXT` for any index i

Valid Usage (Implicit)

- VUID-VkInputAttachmentAspectReference-aspectMask-parameter
  `aspectMask` must be a valid combination of VkImageAspectFlagBits values

- VUID-VkInputAttachmentAspectReference-aspectMask-requiredbitmask
  `aspectMask` must not be `0`

## See Also

VK_VERSION_1_1, VkImageAspectFlags, VkRenderPassInputAttachmentAspectCreateInfo

## 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