Function Prototype

vkEnumerateDeviceLayerProperties

Returns properties of available physical device layers

To enumerate device layers, call:

VkResult vkEnumerateDeviceLayerProperties(
    VkPhysicalDevice physicalDevice,
    uint32_t* pPropertyCount,
    VkLayerProperties* pProperties);
  • physicalDevice is the physical device that will be queried.
  • pPropertyCount is a pointer to an integer related to the number of layer properties available or queried.
  • pProperties is either NULL or a pointer to an array of VkLayerProperties structures.

If pProperties is NULL, then the number of layer 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 layer 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 properties were returned.

The list of layers enumerated by vkEnumerateDeviceLayerPropertiesmust be exactly the sequence of layers enabled for the instance. The members of VkLayerProperties for each enumerated layer must be the same as the properties when the layer was enumerated by vkEnumerateInstanceLayerProperties.

Due to platform details on Android, vkEnumerateDeviceLayerProperties may be called with physicalDevice equal to NULL during layer discovery. This behavior will only be observed by layer implementations, and not the underlying Vulkan driver.

Valid Usage (Implicit)

VUID-vkEnumerateDeviceLayerProperties-pPropertyCount-parameter

pPropertyCount must be a valid pointer to a uint32_t value

VUID-vkEnumerateDeviceLayerProperties-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 VkLayerProperties structures