C Specification
Bits which may be set in VkQueueFamilyProperties::queueFlags,
indicating capabilities of queues in a queue family are:
// Provided by VK_VERSION_1_0
typedef enum VkQueueFlagBits {
VK_QUEUE_GRAPHICS_BIT = 0x00000001,
VK_QUEUE_COMPUTE_BIT = 0x00000002,
VK_QUEUE_TRANSFER_BIT = 0x00000004,
VK_QUEUE_SPARSE_BINDING_BIT = 0x00000008,
// Provided by VK_VERSION_1_1
VK_QUEUE_PROTECTED_BIT = 0x00000010,
// Provided by VK_KHR_video_decode_queue
VK_QUEUE_VIDEO_DECODE_BIT_KHR = 0x00000020,
// Provided by VK_KHR_video_encode_queue
VK_QUEUE_VIDEO_ENCODE_BIT_KHR = 0x00000040,
// Provided by VK_NV_optical_flow
VK_QUEUE_OPTICAL_FLOW_BIT_NV = 0x00000100,
// Provided by VK_ARM_data_graph
VK_QUEUE_DATA_GRAPH_BIT_ARM = 0x00000400,
} VkQueueFlagBits;Description
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VK_QUEUE_GRAPHICS_BIT specifies that queues in this queue family support graphics operations.
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VK_QUEUE_COMPUTE_BIT specifies that queues in this queue family support compute operations.
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VK_QUEUE_TRANSFER_BIT specifies that queues in this queue family support transfer operations.
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VK_QUEUE_SPARSE_BINDING_BIT specifies that queues in this queue family support sparse memory management operations (see Sparse Resources). If any of the sparse resource features are supported, then at least one queue family must support this bit.
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VK_QUEUE_VIDEO_DECODE_BIT_KHR specifies that queues in this queue family support video decode operations.
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VK_QUEUE_VIDEO_ENCODE_BIT_KHR specifies that queues in this queue family support video encode operations.
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VK_QUEUE_OPTICAL_FLOW_BIT_NV specifies that queues in this queue family support optical flow operations.
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VK_QUEUE_DATA_GRAPH_BIT_ARM specifies that queues in this queue family support data graph operations.
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VK_QUEUE_PROTECTED_BIT specifies that queues in this queue family support the VK_DEVICE_QUEUE_CREATE_PROTECTED_BIT bit. (see Protected Memory). If the physical device supports the
protectedMemoryfeature, at least one of its queue families must support this bit.
At least one queue family of at least one physical device exposed by the implementation must support at least one of the following sets of operations:
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graphics operations
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compute operations
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video encode operations
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video decode operations
If an implementation exposes any queue family that supports graphics operations, at least one queue family of at least one physical device exposed by the implementation must support both graphics and compute operations.
Furthermore, if the protectedMemory
physical device feature is supported, then at least one queue family of at
least one physical device exposed by the implementation must support
graphics operations, compute operations, and protected memory operations.
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Note
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All commands that are allowed on a queue that supports transfer operations are also allowed on a queue that supports either graphics or compute operations. Thus, if the capabilities of a queue family include VK_QUEUE_GRAPHICS_BIT or VK_QUEUE_COMPUTE_BIT, then reporting the VK_QUEUE_TRANSFER_BIT capability separately for that queue family is optional. |
For further details see Queues.
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.