vkEnumerateDeviceLayerProperties
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 eitherNULL
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 vkEnumerateDeviceLayerProperties
must 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-physicalDevice-parameter
physicalDevice
must be a valid VkPhysicalDevice handle
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