(gdb) print *pDst->pDrawable
$3 = {type = 1 '\001', class = 0 '\000', depth = 24 '\030', bitsPerPixel = 32 ' ', id = 27277351, x = 0, y = 0,
  width = 854, height = 504, pScreen = 0x76762500, serialNumber = 581107}
(gdb) print *pSrc->pDrawable
$4 = {type = 1 '\001', class = 0 '\000', depth = 24 '\030', bitsPerPixel = 32 ' ', id = 27277353, x = 0, y = 0,
  width = 640, height = 360, pScreen = 0x76762500, serialNumber = 581110}