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All of the gray functions for the tilemap engine require a seperate continuous buffer to copy to and the examples use memcpy to trasfer those buffers to the vissible grey planes. However the gray libraries directly support double buffering but wont return a continuous plane that can be used with the timemap engine. Since the buffers supplied to the grey library is continuous would it be possible(and safe) to use the lower plane in memory returned by the library with the tilemap engine?