VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT

The VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT structure is defined as:

typedef struct VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT {
    VkStructureType sType;
    void* pNext;
    VkRayTracingInvocationReorderModeEXT rayTracingInvocationReorderReorderingHint;
    uint32_t maxShaderBindingTableRecordIndex;
} VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT;

pub struct PhysicalDeviceRayTracingInvocationReorderPropertiesEXT {
    s_type: vk::StructureType,
    p_next: *mut c_void,
    ray_tracing_invocation_reorder_reordering_hint: vk::RayTracingInvocationReorderModeEXT,
    max_shader_binding_table_record_index: u32,
}

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• rayTracingInvocationReorderReorderingHint is a hint indicating if the implementation may reorder at the reorder calls.
• maxShaderBindingTableRecordIndex is the maximum shader binding table record index allowed to be passed in to OpHitObjectSetShaderBindingTableRecordIndexEXT

If rayTracingInvocationReorderReorderingHint is VK_RAY_TRACING_INVOCATION_REORDER_MODE_REORDER_EXT there must exist conditions under which the ordered set of invocations before a reorder instruction is different than the ordered set of invocations after the reorder instruction. The ordering of a set of invocations is determined by the SubgroupId of an invocation’s subgroup and the SubGroupInvocationId of an invocation within that subgroup.

The reorder instructions are:

• OpReorderThreadWithHintEXT
• OpReorderThreadWithHitObjectEXT
• OpHitObjectReorderExecuteShaderEXT
• OpHitObjectTraceReorderExecuteEXT
• OpHitObjectTraceMotionReorderExecuteEXT

If the VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT structure is included in the pNext chain of the VkPhysicalDeviceProperties2 structure passed to vkGetPhysicalDeviceProperties2, it is filled in with each corresponding implementation-dependent property.