D22153: blur: Disable sRGB when the framebuffer is linear

fredrik added inline comments.

INLINE COMMENTS

> fredrik wrote in blur.cpp:656
> Yes, those effects will need to use an sRGB texture as well.
> 
> That being said, it looks to me like the blur effect is just broken in general when it's not rendering to the default framebuffer.

And the reason is that GLRenderTarget::blitFromFramebuffer() always blits from the default framebuffer.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D22153

To: fredrik, #kwin
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