D21370: [effects/screenshot] Upload data to xpixmap in chunks

zzag created this revision.
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REVISION SUMMARY
  xcb_put_image doesn't handle big images well. Contrary to XPutImage, the
  caller must manually split the data in such a way that each xcb_put_image
  request doesn't exceed the maximum request length. Not doing so will result
  in libxcb shutting down the connection.
  
  CCBUG: 338489
  CCBUG: 388182

REPOSITORY
  R108 KWin

BRANCH
  effects-screenshot-split-data

REVISION DETAIL
  https://phabricator.kde.org/D21370

AFFECTED FILES
  effects/screenshot/screenshot.cpp

To: zzag, #kwin
Cc: kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart