D23120: Use compiler __SSE2__ definitions and C++11 alignas

[Frederik Gladhorn]

gladhorn added a comment.


  In D23120#511135 <https://phabricator.kde.org/D23120#511135>, @zzag wrote:
  
  > > There seem to be frequent crashes in the quad version of this code, but
  > >  this change should not make any difference from what I can tell.
  >
  > I doubt that kwin crashes because of alignment issues. I suggest looking into whether GLVertexBuffer::streamingBuffer() is still valid.
  
  
  I agree, I first thought the alignment would be the problem, but after reading the code, I don't see how it would be an issue, thanks for the tip.

INLINE COMMENTS

> zzag wrote in kwineffects.cpp:1137
> Stick only with either ifdef or if defined. Mixing both can be confusing for some people.

Agree, that was sloppy.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D23120

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