VkPhysicalDeviceAccelerationStructureFeaturesKHR

The VkPhysicalDeviceAccelerationStructureFeaturesKHR structure is defined as:

typedef struct VkPhysicalDeviceAccelerationStructureFeaturesKHR {
    VkStructureType sType;
    void* pNext;
    VkBool32 accelerationStructure;
    VkBool32 accelerationStructureCaptureReplay;
    VkBool32 accelerationStructureIndirectBuild;
    VkBool32 accelerationStructureHostCommands;
    VkBool32 descriptorBindingAccelerationStructureUpdateAfterBind;
} VkPhysicalDeviceAccelerationStructureFeaturesKHR;

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.
• accelerationStructure indicates whether the implementation supports the acceleration structure functionality. See Acceleration Structures.
• accelerationStructureCaptureReplay indicates whether the implementation supports saving and reusing acceleration structure device addresses, e.g. for trace capture and replay.
• accelerationStructureIndirectBuild indicates whether the implementation supports indirect acceleration structure build commands, e.g. vkCmdBuildAccelerationStructuresIndirectKHR.
• accelerationStructureHostCommands indicates whether the implementation supports host side acceleration structure commands, e.g. vkBuildAccelerationStructuresKHR, vkCopyAccelerationStructureKHR, vkCopyAccelerationStructureToMemoryKHR, vkCopyMemoryToAccelerationStructureKHR, vkWriteAccelerationStructuresPropertiesKHR.
• descriptorBindingAccelerationStructureUpdateAfterBind indicates whether the implementation supports updating acceleration structure descriptors after a set is bound. If this feature is not enabled, VK_DESCRIPTOR_BINDING_UPDATE_AFTER_BIND_BIT must not be used with VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR.

If the VkPhysicalDeviceAccelerationStructureFeaturesKHR 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 VkPhysicalDeviceAccelerationStructureFeaturesKHR, 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.