Avoid unnecesary unpremultiplication when saving to local data
Avoid unnecesary unpremultiplication when saving to local data

Now that we typically have premultiplied data stored in Cogl
textures, when fetching a texture into local data for temporary
storage, use a premultiplied format to avoid an unpremultiply/
premultiply roundtrip.

http://bugzilla.openedhand.com/show_bug.cgi?id=1406

Signed-off-by: Robert Bragg <12e9293ec6b30c7fa8a0926af42807e929c1684f@linux.intel.com>

collects/clutter,Distrotech/clutter,jigpu/clutter,GNOME/clutter,GNOME/clutter,rkudiyarov/clutter_osx,spatulasnout/clutter,ebassi/clutter,heysion/clutter-clone,collects/clutter,Distrotech/clutter,rkudiyarov/clutter_osx,spatulasnout/clutter,djdeath/clutter-multithreaded,jigpu/clutter,djdeath/clutter-android,heysion/clutter-clone,heysion/clutter-clone,kerrickstaley/clutter-vala,djdeath/clutter,kerrickstaley/clutter-vala,jigpu/clutter,djdeath/clutter,collects/clutter,GNOME/clutter,GNOME/clutter,ebassi/clutter,nobled/clutter,ebassi/clutter,dlespiau/clutter,djdeath/clutter,spatulasnout/clutter,GNOME/clutter,djdeath/clutter,rkudiyarov/clutter_osx,kerrickstaley/clutter-vala,heysion/clutter-clone,djdeath/clutter-android,jigpu/clutter,Distrotech/clutter,dlespiau/clutter,Distrotech/clutter,collects/clutter,Distrotech/clutter,ebassi/clutter,djdeath/clutter-multithreaded,tardyp/clutter,nobled/clutter,dlespiau/clutter,Distrotech/clutter,collects/clutter,ebassi/clutter,kerrickstaley/clutter-vala,jigpu/clutter,djdeath/clutter,nobled/clutter,djdeath/clutter-multithreaded,spatulasnout/clutter,tardyp/clutter,djdeath/clutter-android,rkudiyarov/clutter_osx,jigpu/clutter,djdeath/clutter,spatulasnout/clutter,heysion/clutter-clone,djdeath/clutter-android,djdeath/clutter-android,djdeath/clutter-multithreaded,tardyp/clutter