pub type PFN_vkGetRayTracingShaderGroupStackSizeKHR = unsafe extern "system" fn(_device: Device, _pipeline: Pipeline, _group: u32, _group_shader: ShaderGroupShaderKHR) -> DeviceSize;pub type PFN_vkGetRayTracingShaderGroupStackSizeKHR = unsafe extern "system" fn(_device: Device, _pipeline: Pipeline, _group: u32, _group_shader: ShaderGroupShaderKHR) -> DeviceSize;