C Specification
Bits which can be set in VkBufferCreateInfo::usage
, specifying
usage behavior of a buffer, are:
// Provided by VK_VERSION_1_0
typedef enum VkBufferUsageFlagBits {
VK_BUFFER_USAGE_TRANSFER_SRC_BIT = 0x00000001,
VK_BUFFER_USAGE_TRANSFER_DST_BIT = 0x00000002,
VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT = 0x00000004,
VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT = 0x00000008,
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT = 0x00000010,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT = 0x00000020,
VK_BUFFER_USAGE_INDEX_BUFFER_BIT = 0x00000040,
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT = 0x00000080,
VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT = 0x00000100,
// Provided by VK_VERSION_1_2
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT = 0x00020000,
// Provided by VK_EXT_transform_feedback
VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_BUFFER_BIT_EXT = 0x00000800,
// Provided by VK_EXT_transform_feedback
VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_COUNTER_BUFFER_BIT_EXT = 0x00001000,
// Provided by VK_EXT_conditional_rendering
VK_BUFFER_USAGE_CONDITIONAL_RENDERING_BIT_EXT = 0x00000200,
// Provided by VK_KHR_ray_tracing
VK_BUFFER_USAGE_RAY_TRACING_BIT_KHR = 0x00000400,
// Provided by VK_NV_ray_tracing
VK_BUFFER_USAGE_RAY_TRACING_BIT_NV = VK_BUFFER_USAGE_RAY_TRACING_BIT_KHR,
// Provided by VK_EXT_buffer_device_address
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT_EXT = VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT,
// Provided by VK_KHR_buffer_device_address
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT_KHR = VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT,
} VkBufferUsageFlagBits;
Description
-
VK_BUFFER_USAGE_TRANSFER_SRC_BIT
specifies that the buffer can be used as the source of a transfer command (see the definition ofVK_PIPELINE_STAGE_TRANSFER_BIT
). -
VK_BUFFER_USAGE_TRANSFER_DST_BIT
specifies that the buffer can be used as the destination of a transfer command. -
VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT
specifies that the buffer can be used to create aVkBufferView
suitable for occupying aVkDescriptorSet
slot of typeVK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER
. -
VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT
specifies that the buffer can be used to create aVkBufferView
suitable for occupying aVkDescriptorSet
slot of typeVK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER
. -
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT
specifies that the buffer can be used in aVkDescriptorBufferInfo
suitable for occupying aVkDescriptorSet
slot either of typeVK_DESCRIPTOR_TYPE_UNIFORM_BUFFER
orVK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC
. -
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT
specifies that the buffer can be used in aVkDescriptorBufferInfo
suitable for occupying aVkDescriptorSet
slot either of typeVK_DESCRIPTOR_TYPE_STORAGE_BUFFER
orVK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC
. -
VK_BUFFER_USAGE_INDEX_BUFFER_BIT
specifies that the buffer is suitable for passing as thebuffer
parameter tovkCmdBindIndexBuffer
. -
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT
specifies that the buffer is suitable for passing as an element of thepBuffers
array tovkCmdBindVertexBuffers
. -
VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT
specifies that the buffer is suitable for passing as thebuffer
parameter tovkCmdDrawIndirect
,vkCmdDrawIndexedIndirect
,vkCmdDrawMeshTasksIndirectNV
,vkCmdDrawMeshTasksIndirectCountNV
, orvkCmdDispatchIndirect
. It is also suitable for passing as thebuffer
member ofVkIndirectCommandsStreamNV
, orsequencesCountBuffer
orsequencesIndexBuffer
orpreprocessedBuffer
member ofVkGeneratedCommandsInfoNV
-
VK_BUFFER_USAGE_CONDITIONAL_RENDERING_BIT_EXT
specifies that the buffer is suitable for passing as thebuffer
parameter to vkCmdBeginConditionalRenderingEXT. -
VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_BUFFER_BIT_EXT
specifies that the buffer is suitable for using for binding as a transform feedback buffer with vkCmdBindTransformFeedbackBuffersEXT. -
VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_COUNTER_BUFFER_BIT_EXT
specifies that the buffer is suitable for using as a counter buffer with vkCmdBeginTransformFeedbackEXT and vkCmdEndTransformFeedbackEXT. -
VK_BUFFER_USAGE_RAY_TRACING_BIT_KHR
specifies that the buffer is suitable for use in vkCmdTraceRaysKHR and vkCmdBuildAccelerationStructureKHR. -
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT
specifies that the buffer can be used to retrieve a buffer device address via vkGetBufferDeviceAddress and use that address to access the buffer’s memory from a shader.
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.