Repaint counters can be useful for debugging content that is composited with AC and AC implementations.
Created attachment 143160 [details] Patch
This code in Cairo only, but if the Qt port is interested in this feature, I'm willing to write it using QPainter. The reason I did not use generic GraphicsContext APIs it that it would require some interaction with the FontCache and using the toy platform interface seems simpler all around.
Comment on attachment 143160 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=143160&action=review I'm ok with the texture-mapper changes, though I'm not qualified to review the cairo-specific code :) We'd love a QPainter implementation of this, though we'd have to do this in the LayerBackingStore code which is the proper place in WebKit2. > Source/WebCore/platform/graphics/texmap/TextureMapperLayer.cpp:573 > +#if USE(CAIRO) This would be more readable inside the function.
Comment on attachment 143160 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=143160&action=review I'm just not sure about the border color, feels like you may want to have a border distinct from the background, but I guess it'll look readable like this anyway. >> Source/WebCore/platform/graphics/texmap/TextureMapperLayer.cpp:573 >> +#if USE(CAIRO) > > This would be more readable inside the function. Hmm, I think it would be less readable with different implementations taking the whole function body. As it is now it's pretty obvious that each implementation has a completely different implementation.
Comment on attachment 143160 [details] Patch Rejecting attachment 143160 [details] from commit-queue. Failed to run "['/mnt/git/webkit-commit-queue/Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '-..." exit_code: 2 Last 500 characters of output: webkit-commit-queue/Source/WebKit/chromium/webkit --revision 138079 --non-interactive --force --accept theirs-conflict --ignore-externals' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium' 48>At revision 138079. ________ running '/usr/bin/python tools/clang/scripts/update.py --mac-only' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium' ________ running '/usr/bin/python gyp_webkit' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium' Updating webkit projects from gyp files... Full output: http://queues.webkit.org/results/12763103
Committed r118061: <http://trac.webkit.org/changeset/118061>