Romain Guy e83221c547 Fix alpha channel computation with ColorMatrixColorFilter
Bug #7222476

There were two issues:
- Blending was ignored with color filters
- The addition vector of a color filter was treated as integer values
  instead of float values

Change-Id: Id94065704a30ee8aaaa5724a9f3a3cff7c50ced7
2012-09-25 09:33:22 -07:00
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