Vince Gilligan has pretty explicitly stated that Walt intended to kill Jesse before he saw what the Nazis (and consequently, his own actions) had done to him.
I would hope people could draw that conclusion on their own, he was pissed when Badger and Skinny revealed the news about the Blue on the streets... Seems pretty spelled out right there that he wanted to take care of him just by his reaction... not to mention his exchange with Jack shortly thereafter.