So how much of that went to hating on gays?

Mitt gave $2.6 million to the Mormon Church last year alone:

The couple donated $1.5 million in 2010 to the Church of Jesus Christ of Latter-Day Saints, which also received donations from the family’s foundation. They contributed $2.6 million to the Mormon church in 2011, according to the estimated return.

So how much of that ended up being spent in California to keep gays from marrying?