# vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM(3) Manual Page

## Name

vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM - Query image formats for data graph optical flow

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## C Specification

To enumerate the supported image formats for a specific data graph optical flow usage, call:

    // Provided by VK_ARM_data_graph_optical_flow
    VkResult vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM(
        VkPhysicalDevice                            physicalDevice,
        uint32_t                                    queueFamilyIndex,
        const VkQueueFamilyDataGraphPropertiesARM*  pQueueFamilyDataGraphProperties,
        const VkDataGraphOpticalFlowImageFormatInfoARM* pOpticalFlowImageFormatInfo,
        uint32_t*                                   pFormatCount,
        VkDataGraphOpticalFlowImageFormatPropertiesARM* pImageFormatProperties);

## Parameters

- `physicalDevice` is the physical device being queried.

- `queueFamilyIndex` is the index of the queue family being queried.

- `pQueueFamilyDataGraphProperties` is a pointer to a VkQueueFamilyDataGraphPropertiesARM structure that selects the processing engine and operation set for which the properties are queried.

- `pOpticalFlowImageFormatInfo` is a pointer to a VkDataGraphOpticalFlowImageFormatInfoARM structure specifying the optical flow usage for which information is returned.

- `pFormatCount` is a pointer to an integer related to the number of optical flow properties available or queried, as described below.

- `pImageFormatProperties` is a pointer to an array of VkDataGraphOpticalFlowImageFormatPropertiesARM structures in which supported formats and image parameters are returned.

## Description

If `pImageFormatProperties` is `NULL`, then the number of optical flow properties supported for the given `physicalDevice` is returned in `pFormatCount`. Otherwise, `pFormatCount` must point to a variable set by the user to the number of elements in the `pImageFormatProperties` array, and on return the variable is overwritten with the number of values actually written to `pImageFormatProperties`. If the value of `pFormatCount` is less than the number of optical flow properties supported, at most `pFormatCount` values will be written to `pImageFormatProperties`, and VK_INCOMPLETE will be returned instead of VK_SUCCESS, to indicate that not all the available values were returned. Before creating an image to be used as a optical flow image, obtain the supported image creation parameters by querying with vkGetPhysicalDeviceFormatProperties2 and vkGetPhysicalDeviceImageFormatProperties2 using one of the reported formats and adding VkDataGraphOpticalFlowImageFormatInfoARM to the `pNext` chain of VkPhysicalDeviceImageFormatInfo2. When querying the parameters with vkGetPhysicalDeviceImageFormatProperties2 for images used for optical flow operations, the VkDataGraphOpticalFlowImageFormatInfoARM::`usage` field should contain one or more of the bits defined in VkDataGraphOpticalFlowImageUsageFlagBitsARM.

Valid Usage

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-pQueueFamilyDataGraphProperties-09965
  `pQueueFamilyDataGraphProperties` must point to a structure whose `operation` member has its `name` member equal to `OpticalFlow`

Valid Usage (Implicit)

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-physicalDevice-parameter
  `physicalDevice` must be a valid VkPhysicalDevice handle

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-pQueueFamilyDataGraphProperties-parameter
  `pQueueFamilyDataGraphProperties` must be a valid pointer to a valid VkQueueFamilyDataGraphPropertiesARM structure

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-pOpticalFlowImageFormatInfo-parameter
  `pOpticalFlowImageFormatInfo` must be a valid pointer to a valid VkDataGraphOpticalFlowImageFormatInfoARM structure

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-pFormatCount-parameter
  `pFormatCount` must be a valid pointer to a `uint32_t` value

- VUID-vkGetPhysicalDeviceQueueFamilyDataGraphOpticalFlowImageFormatsARM-pImageFormatProperties-parameter
  If the value referenced by `pFormatCount` is not `0`, and `pImageFormatProperties` is not `NULL`, `pImageFormatProperties` must be a valid pointer to an array of `pFormatCount` VkDataGraphOpticalFlowImageFormatPropertiesARM structures

Return Codes

On success, this command returns

  - VK_INCOMPLETE

  - VK_SUCCESS

On failure, this command returns

  - VK_ERROR_EXTENSION_NOT_PRESENT

  - VK_ERROR_FORMAT_NOT_SUPPORTED

  - VK_ERROR_INITIALIZATION_FAILED

  - VK_ERROR_UNKNOWN

  - VK_ERROR_VALIDATION_FAILED

Note | VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_R8G8B8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8_UNORM, and VK_FORMAT_B10G11R11_UFLOAT_PACK32 are initially supported for images with optical flow usage VK_DATA_GRAPH_OPTICAL_FLOW_IMAGE_USAGE_INPUT_BIT_ARM. VK_FORMAT_R16G16_SFLOAT is initially supported for images with optical flow usage VK_DATA_GRAPH_OPTICAL_FLOW_IMAGE_USAGE_OUTPUT_BIT_ARM and VK_DATA_GRAPH_OPTICAL_FLOW_IMAGE_USAGE_HINT_BIT_ARM. VK_FORMAT_R16_UINT is initially supported for images with optical flow usage VK_DATA_GRAPH_OPTICAL_FLOW_IMAGE_USAGE_COST_BIT_ARM.

## See Also

VK_ARM_data_graph_optical_flow, VkDataGraphOpticalFlowImageFormatInfoARM, VkDataGraphOpticalFlowImageFormatPropertiesARM, VkPhysicalDevice, VkQueueFamilyDataGraphPropertiesARM

## 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