Flags for the CombineCommand

Note:

Arithmetic calculations in this table assume 24-bit image data.

The following flags define how to treat the source rectangle:

Value	Meaning
SourceNop	No change.
SourceNot	Invert the color, resulting in its complement.
Source0	Change all bits to 0.
Source1	Change all bits to 1.

The following flags define how to treat the destination rectangle:

Value	Meaning
DestinationNop	No change.
DestinationNot	Invert the color, resulting in its complement.
Destination0	Change all bits to 0.
Destination1	Change all bits to 1.

The following flags define which operation to use when combining the data:

Value	Meaning
OperationAnd	Combine each set of bytes using a bitwise AND (&).
OperationOr	Combine each set of bytes using a bitwise OR ( ¦ ).
OperationXor	Combine each set of bytes using a bitwise exclusive OR (^).
OperationAdd	Add the byte values, allowing a maximum of 255.
OperationSubtractSource	Subtract the source from the destination, allowing a minimum of 0.
OperationSubtractDestination	Subtract the destination from the source, allowing a minimum of 0.
OperationMultiply	Multiply the byte values, allowing a maximum of 255. The result is calculated as follows: result = (source dest) / 255.*
OperationDivideSource	Divide the destination by the source. If source > 0, then the result is calculated as follows: result = min( (dest / source) 255, 255 ).* Otherwise, if source = 0, then result = 255.
OperationDivideDestination	Divide the source by the destination. If dest > 0, then the result is calculated as follows: result = min( (source / dest) 255, 255 ).* Otherwise, if dest = 0, then result = 255.
OperationAverage	Use the average of the two values.
OperationMinimum	Use the lesser of the two values.
OperationMaximum	Use the greater of the two values.

The following flags define how to treat the resulting image rectangle:

Value	Meaning
ResultNop	No change.
ResultNot	Invert the color, resulting in its complement.
Result0	Change all bits to 0.
Result1	Change all bits to 1.