VkPhysicalDeviceBufferDeviceAddressFeaturesEXT(3)

Name

VkPhysicalDeviceBufferDeviceAddressFeaturesEXT - Structure describing buffer address features that can be supported by an implementation

C Specification

The VkPhysicalDeviceBufferDeviceAddressFeaturesEXT structure is defined as:

// Provided by VK_EXT_buffer_device_address
typedef struct VkPhysicalDeviceBufferDeviceAddressFeaturesEXT {
    VkStructureType    sType;
    void*              pNext;
    VkBool32           bufferDeviceAddress;
    VkBool32           bufferDeviceAddressCaptureReplay;
    VkBool32           bufferDeviceAddressMultiDevice;
} VkPhysicalDeviceBufferDeviceAddressFeaturesEXT;
// Provided by VK_EXT_buffer_device_address
typedef VkPhysicalDeviceBufferDeviceAddressFeaturesEXT VkPhysicalDeviceBufferAddressFeaturesEXT;

Members

This structure describes the following features:

  • sType is a VkStructureType value identifying this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • bufferDeviceAddress indicates that the implementation supports accessing buffer memory in shaders as storage buffers via an address queried from vkGetBufferDeviceAddressEXT.

  • bufferDeviceAddressCaptureReplay indicates that the implementation supports saving and reusing buffer addresses, e.g. for trace capture and replay.

  • bufferDeviceAddressMultiDevice indicates that the implementation supports the bufferDeviceAddress feature for logical devices created with multiple physical devices. If this feature is not supported, buffer addresses must not be queried on a logical device created with more than one physical device.

Description

If the VkPhysicalDeviceBufferDeviceAddressFeaturesEXT structure is included in the pNext chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. If the application wishes to use a VkDevice with any features described by VkPhysicalDeviceBufferDeviceAddressFeaturesEXT, it must add an instance of the structure, with the desired feature members set to VK_TRUE, to the pNext chain of VkDeviceCreateInfo when creating the VkDevice.

The VkPhysicalDeviceBufferDeviceAddressFeaturesEXT structure has the same members as the VkPhysicalDeviceBufferDeviceAddressFeatures structure, but the functionality indicated by the members is expressed differently. The features indicated by the VkPhysicalDeviceBufferDeviceAddressFeatures structure requires additional flags to be passed at memory allocation time, and the capture and replay mechanism is built around opaque capture addresses for buffer and memory objects.
Valid Usage (Implicit)

  • VUID-VkPhysicalDeviceBufferDeviceAddressFeaturesEXT-sType-sType
    sType must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_BUFFER_DEVICE_ADDRESS_FEATURES_EXT

See Also

VK_EXT_buffer_device_address, VkBool32, VkStructureType

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.