== Fixing ANGLE Bugs ==

Before you commit a WebKit patch that modifies ANGLE, please run `Tools/Scripts/update-angle --regenerate-changes-diff`. This will update [https://trac.webkit.org/browser/webkit/trunk/Source/ThirdParty/ANGLE/changes.diff Source/ThirdParty/ANGLE/changes.diff] so that people can see the diff from upstream at a glance.

When fixing bugs in ANGLE, please create a new bug on [https://bugs.chromium.org/p/angleproject/issues/list Monorail] (Google's bug tracker) and attach the patch applied to WebKit so that changes can eventually be merged upstream instead of maintained locally.

== Merging ANGLE from Upstream ==

To pull in a new revision of ANGLE, run the script [https://trac.webkit.org/browser/webkit/trunk/Tools/Scripts/update-angle Tools/Scripts/update-angle] and follow its instructions. This script will attempt to update to a new version of ANGLE without losing WebKit's local changes by performing a git rebase. It also helps updating the CMake build files and ANGLE.plist.