https://bugs.kde.org/show_bug.cgi?id=500019

            Bug ID: 500019
           Summary: Direct scanout is prevented by black point
                    compensation
    Classification: Plasma
           Product: kwin
           Version: git master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: platform-drm
          Assignee: kwin-bugs-n...@kde.org
          Reporter: xaver.h...@gmail.com
  Target Milestone: ---

The legacy KMS matrix is only 3x3, but the way we implemented black point
compensation uses a 3x4 matrix, preventing direct scanout.

If we apply BPC with the LUTs instead, then we could apply it just fine without
preventing direct scanout too.

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