vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR(3)

# vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR(3) Manual Page

## Name

vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR - Returns properties describing what cooperative matrix types are supported

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## C Specification

To enumerate the supported cooperative matrix types and operations, call:

    // Provided by VK_KHR_cooperative_matrix
    VkResult vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR(
        VkPhysicalDevice                            physicalDevice,
        uint32_t*                                   pPropertyCount,
        VkCooperativeMatrixPropertiesKHR*           pProperties);

## Parameters

- `physicalDevice` is the physical device.

- `pPropertyCount` is a pointer to an integer related to the number of cooperative matrix properties available or queried.

- `pProperties` is either `NULL` or a pointer to an array of VkCooperativeMatrixPropertiesKHR structures.

## Description

If `pProperties` is `NULL`, then the number of cooperative matrix properties available is returned in `pPropertyCount`. Otherwise, `pPropertyCount` must point to a variable set by the application to the number of elements in the `pProperties` array, and on return the variable is overwritten with the number of structures actually written to `pProperties`. If `pPropertyCount` is less than the number of cooperative matrix properties available, at most `pPropertyCount` structures will be written, and VK_INCOMPLETE will be returned instead of VK_SUCCESS, to indicate that not all the available cooperative matrix properties were returned.

Valid Usage (Implicit)

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

- VUID-vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR-pPropertyCount-parameter
  `pPropertyCount` must be a valid pointer to a `uint32_t` value

- VUID-vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR-pProperties-parameter
  If the value referenced by `pPropertyCount` is not `0`, and `pProperties` is not `NULL`, `pProperties` must be a valid pointer to an array of `pPropertyCount` VkCooperativeMatrixPropertiesKHR structures

Return Codes

On success, this command returns

  - VK_INCOMPLETE

  - VK_SUCCESS

On failure, this command returns

  - VK_ERROR_OUT_OF_DEVICE_MEMORY

  - VK_ERROR_OUT_OF_HOST_MEMORY

  - VK_ERROR_UNKNOWN

  - VK_ERROR_VALIDATION_FAILED

## See Also

VK_KHR_cooperative_matrix, VkCooperativeMatrixPropertiesKHR, VkPhysicalDevice

## 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