Function add_rect_clip_task_to_batch 

fn add_rect_clip_task_to_batch(
    task: &RectangleClipSubTask,
    target_rect: &DeviceIntRect,
    masked_task_address: RenderTaskAddress,
    memory: &FrameMemory,
    render_tasks: &RenderTaskGraph,
    gpu_buffers: &mut GpuBufferBuilder,
    results: &mut ClipMaskInstanceList,
)