Manual array/buffer synchronization

[Redninja106]

Right now when using arrays (buffers) in shaders, arrays are automatically synced before each shader invocation. this can lead to a lot of unnecessary copying, but is required to prevent desyncs. SF should offer an opt-in solution for manual array-buffer syncing:

class Graphics 
{
      // sends the current buffer data to the gpu, any changes after a call to this method will *not* be reflected in shaders (unless the method is called again)
      public static void BufferUpload(Array array);
      // retrieves the array data from the gpu (only useful in compute shaders)
      public static void BufferSync(Array array);
}