pharo-project/pharo-vm — pull request #40 by nicolas-cellier-aka-nice (2014-04-16 21:42:58+00:00)
Title: Fix issue 12538 fast up rgbAdd composition rule

This is not a bugfix so can be postponed to Pharo4.0 if you prefer.
But it's rather an easy one.
See https://pharo.fogbugz.com/f/cases/12538/Fast-up-BitBlt-rgbAdd-rule