pub type PFN_vkCmdWriteTimestamp = unsafe extern "system" fn(command_buffer: CommandBuffer, pipeline_stage: PipelineStageFlags, query_pool: QueryPool, query: u32);
pub type PFN_vkCmdWriteTimestamp = unsafe extern "system" fn(command_buffer: CommandBuffer, pipeline_stage: PipelineStageFlags, query_pool: QueryPool, query: u32);