D27788: Implement EGL_KHR_partial_update

[Aleix Pol Gonzalez]

apol added a comment.


  In D27788#620847 <https://phabricator.kde.org/D27788#620847>, @davidedmundson wrote:
  
  > This assumes double buffered, is this always the case? 
  >  Otherwise you need to collect sum of all damage across the buffer age.
  
  
  That's what the for loop in `egl_gbm_backend.cpp:498` is doing, AFAIU.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D27788

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