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mirror of https://github.com/Interlisp/maiko.git synced 2026-01-14 15:36:34 +00:00
Nick Briggs 1f17665741
Fix off-by-one error in clipping_Xbitblt (#327)
The LowerRightX and LowerRightY were calculated as the X and Y coordinates of the
pixel to the right and below the last visible pixel, but are compared with the
last actually visible pixel in the source. They need an extra -1 offset to correct.

Add comments to explain what's going on.  Fix the signature of the function to reflect
that the "dummy" passed for the display region is a pointer not an integer.
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