BSW code implements HorizontalLine and has Rectangle as repeated calls to that.
It would be faster to avoid the cost of initial setup of GetScanLine and left/right bitmasks for every row if Rectangle would be optimized to reuse those values (just advance r5 and r6 by SC_BYTE_WIDTH (=40) bytes) and HorizontalLine to become 1-pixel high Rectangle instead.
BSW code implements
HorizontalLineand hasRectangleas repeated calls to that.It would be faster to avoid the cost of initial setup of
GetScanLineand left/right bitmasks for every row ifRectanglewould be optimized to reuse those values (just advancer5andr6bySC_BYTE_WIDTH(=40) bytes) andHorizontalLineto become 1-pixel highRectangleinstead.Same thing for
InvertLinevsInvertRectangle.