Does not initialize buffers.
onDrawBufferedRaw will be returned the same content,
unless the buffer size has changed.
This is needed for widgets might want their own Raw
and Opacity buffer to stay unchanged, if their size
didn't change. This is typically an optimization.
Does not initialize buffers. onDrawBufferedRaw will be returned the same content, unless the buffer size has changed. This is needed for widgets might want their own Raw and Opacity buffer to stay unchanged, if their size didn't change. This is typically an optimization.