VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR

The VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR structure is defined as:

typedef struct VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR {
    VkStructureType sType;
    void* pNext;
    VkBool32 rayTracingMaintenance1;
    VkBool32 rayTracingPipelineTraceRaysIndirect2;
} VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR;

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.
• rayTracingMaintenance1 indicates that the implementation supports the following:
  • The CullMaskKHR SPIR-V builtin using the SPV_KHR_ray_cull_mask SPIR-V extension.
  • Additional acceleration structure property queries: VK_QUERY_TYPE_ACCELERATION_STRUCTURE_SERIALIZATION_BOTTOM_LEVEL_POINTERS_KHR and VK_QUERY_TYPE_ACCELERATION_STRUCTURE_SIZE_KHR.
  • A new access flag VK_ACCESS_2_SHADER_BINDING_TABLE_READ_BIT_KHR.
  • A new pipeline stage flag bit VK_PIPELINE_STAGE_2_ACCELERATION_STRUCTURE_COPY_BIT_KHR
• rayTracingPipelineTraceRaysIndirect2 indicates whether the implementation supports the extended indirect ray tracing command vkCmdTraceRaysIndirect2KHR.

If the VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR 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 VkPhysicalDeviceRayTracingMaintenance1FeaturesKHR, 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.