Equivalent
0

First disposed
-1

Second disposed
-2

Both disposed
-1

Different widths
-3

Different heights
-4

Different widths and heights
-3

Invalid parameter
-2

Invalid this
-1

Invalid this and parameter
-1

Different pixels
(0, 0): 0
(0, 1): 0
(0, 2): -3289651
(1, 0): -13421773
(1, 1): 33554431
(1, 2): -1
(2, 0): -3289651
(2, 1): 0
(2, 2): 0

