tree b5f5cdfec3d2def367f35127ccd985d8f2299932
parent 92efbeeec6cb1566dee6921ac9eb6b81bc7087c3
author TOKITA Hiroshi <tokita.hiroshi@gmail.com> 1681228354 +0900
committer Anas Nashif <anas.nashif@intel.com> 1685108965 -0400

fb: correct invert_area image calculation

Fix the wrong calculation for inverting implemented by
commit 70685875059f
("fb: cfb: support inverting with coordinates that do not align
with the tile")

Fixed not enough consideration when the drawing area height
is eight lines or less.
Simplify to XOR calculation.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>