[Webkit-unassigned] [Bug 52311] [chromium] Add command-line flag to enable composite to offscreen texture.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=52311





--- Comment #11 from Vangelis Kokkevis <vangelis at chromium.org>  2011-01-12 16:06:15 PST ---
(In reply to comment #9)
> (In reply to comment #7)
> 
> Sorry, forgot one bullet item:
> 
> > > You can avoid doing this clear every frame if you just do it once when setCompositeOffscreen(true) is called and keep the color mask set to (true, true, true, false).
> > > 
> 
> Will this work if setCompositeOffscreen(true) isn't called inside of doComposite(), i.e. it's called once when the render layer is created an then never again?

It should, in theory. If you clear the alpha channel of the backbuffer once at the very beginning and then mask alpha writes off, then the alpha channel should stay clean.

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