[Webkit-unassigned] [Bug 140667] [WinCairo] Accelerated compositing should be disabled when graphics card does not support it.
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Feb 11 11:47:45 PST 2015
https://bugs.webkit.org/show_bug.cgi?id=140667
--- Comment #6 from peavo at outlook.com ---
(In reply to comment #4)
> Comment on attachment 244974 [details]
> Patch
>
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=244974&action=review
>
Thanks for reviewing :)
> I could see this making things a little harder to debug. If we run into a
> problem in the future, we would also have to ask ourselves if it is a
> problem with the accelerated path or not. Doesn't DirectX have a
> non-graphics-card implementation that ideally behaves the same, but slower?
> Couldn't we use this through ANGLE instead of OpenGL? If that's infeasible,
> then this is definitely the way to go.
>
That might be possible, but I'm not sure :)
I think ANGLE examines the presence of some capabilities, and will not create a renderer if the requirements are not met.
> > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:248
> > +bool AcceleratedCompositingContext::acceleratedCompositingAvailable()
>
> This and the declaration should probably also be inside #if
> USE(TEXTURE_MAPPER_GL)
>
I think the whole file is inside #if USE(TEXTURE_MAPPER_GL)
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