# VkIndirectCommandsIndexBufferTokenEXT(3) Manual Page

## Name

VkIndirectCommandsIndexBufferTokenEXT - Structure specifying layout token info for a single index buffer command token

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## C Specification

The `VkIndirectCommandsIndexBufferTokenEXT` structure specifies the layout token info for the `VK_INDIRECT_COMMANDS_TOKEN_TYPE_INDEX_BUFFER_EXT` token.

    // Provided by VK_EXT_device_generated_commands
    typedef struct VkIndirectCommandsIndexBufferTokenEXT {
        VkIndirectCommandsInputModeFlagBitsEXT    mode;
    } VkIndirectCommandsIndexBufferTokenEXT;

## Members

- `mode` specifies the mode to use with this token.

## Description

This allows for easy layering of Vulkan atop other APIs. When `VK_INDIRECT_COMMANDS_INPUT_MODE_DXGI_INDEX_BUFFER_EXT` is specified, the indirect buffer can contain a `D3D12_INDEX_BUFFER_VIEW` instead of VkBindIndexBufferIndirectCommandEXT as D3D’s DXGI format value is mapped to the VkIndexType. It works as both structs are otherwise binary compatible.

Valid Usage

- VUID-VkIndirectCommandsIndexBufferTokenEXT-mode-11135
  `mode` must be non-zero

- VUID-VkIndirectCommandsIndexBufferTokenEXT-mode-11136
  `mode` must be one of the bits supported in VkPhysicalDeviceDeviceGeneratedCommandsPropertiesEXT::`supportedIndirectCommandsInputModes`

Valid Usage (Implicit)

- VUID-VkIndirectCommandsIndexBufferTokenEXT-mode-parameter
  `mode` must be a valid VkIndirectCommandsInputModeFlagBitsEXT value

## See Also

VK_EXT_device_generated_commands, VkIndirectCommandsInputModeFlagBitsEXT, VkIndirectCommandsTokenDataEXT

## 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