NEW 112245
--tiled-backing-store option unused 
https://bugs.webkit.org/show_bug.cgi?id=112245
Summary --tiled-backing-store option unused
Olivier Tilloy
Reported 2013-03-13 04:07:10 PDT
If I understand it correctly, the use of the tiled backing store is something ports opt in for statically. The Qt port uses it by default (and thus WTF_USE_TILED_BACKING_STORE is defined to 1). The build-webkit script has a --tiled-backing-store switch which defines ENABLE_WTF_USE_TILED_BACKING_STORE to 1, but there is no trace of checks like ENABLE(WTF_USE_TILED_BACKING_STORE) anywhere across the code base, so it looks like this switch is useless. When building the Qt port (build-webkit --qt), passing --no-tiled-backing-store does *not* disable the use of the tiled backing store. And the summary printed out by the configure step is rather confusing: Have .......................... […] Use ........................... tiled_backing_store […] Features ...................... […] […] Tiled Backing Store ........... no
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