pub type PFN_vkCmdTraceRaysKHR = unsafe extern "system" fn(command_buffer: CommandBuffer, p_raygen_shader_binding_table: *const StridedDeviceAddressRegionKHR, p_miss_shader_binding_table: *const StridedDeviceAddressRegionKHR, p_hit_shader_binding_table: *const StridedDeviceAddressRegionKHR, p_callable_shader_binding_table: *const StridedDeviceAddressRegionKHR, width: u32, height: u32, depth: u32);