pub type PFN_vkCmdSetDepthBias = unsafe extern "system" fn(_command_buffer: CommandBuffer, _depth_bias_constant_factor: f32, _depth_bias_clamp: f32, _depth_bias_slope_factor: f32);pub type PFN_vkCmdSetDepthBias = unsafe extern "system" fn(_command_buffer: CommandBuffer, _depth_bias_constant_factor: f32, _depth_bias_clamp: f32, _depth_bias_slope_factor: f32);