# vkCmdBindIndexBuffer3KHR(3) Manual Page

## Name

vkCmdBindIndexBuffer3KHR - Bind an address range as an index buffer to a command buffer

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## C Specification

To bind an address range as an index buffer to a command buffer, call:

    // Provided by VK_KHR_device_address_commands
    void vkCmdBindIndexBuffer3KHR(
        VkCommandBuffer                             commandBuffer,
        const VkBindIndexBuffer3InfoKHR*            pInfo);

## Parameters

- `commandBuffer` is the command buffer into which the command is recorded.

- `pInfo` is a pointer to a VkBindIndexBuffer3InfoKHR structure defining parameters of this command.

## Description

The bound index buffer range is set to the range of memory indicated by `pInfo->addressRange`.

If the `nullDescriptor` feature is enabled, `pInfo->addressRange.size` and `pInfo->addressRange.address` can be 0. When the size and address are 0, every index read from this binding will return a value of zero.

Valid Usage (Implicit)

- VUID-vkCmdBindIndexBuffer3KHR-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

- VUID-vkCmdBindIndexBuffer3KHR-pInfo-parameter
  `pInfo` must be a valid pointer to a valid VkBindIndexBuffer3InfoKHR structure

- VUID-vkCmdBindIndexBuffer3KHR-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdBindIndexBuffer3KHR-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support VK_QUEUE_GRAPHICS_BIT operations

- VUID-vkCmdBindIndexBuffer3KHR-videocoding
  This command must only be called outside of a video coding scope

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Video Coding Scope | Supported Queue Types | Command Type
--- | --- | --- | --- | ---
Primary Secondary | Both | Outside | VK_QUEUE_GRAPHICS_BIT | State

Conditional Rendering

vkCmdBindIndexBuffer3KHR is not affected by conditional rendering

## See Also

VK_KHR_device_address_commands, VkBindIndexBuffer3InfoKHR, VkCommandBuffer

## 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0