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8a2b69cc87
Previously our region code was just a simple y,x sorted list of non-intersecting rectangles. This can cause us to have simple regions represented in a complex unoptimizable way. Switching to pixman regions gives us a canonical region implementation. There are some cases when this can cause performance regressions. For example, with the old region code we end up with this region: http://people.mozilla.org/~jmuizelaar/region-pre.html which is represented like this: http://people.mozilla.org/~jmuizelaar/region-post.html with the new code. We call SimplifyOutward(4) on this. With old regions we can't simplify it so we end up taking the bounds and get 1 rect. With the new regions we have only 3 rects to start and so we do nothing. The difference between 3 rects and 1 rect cause D2D to do a PushLayer() instead of a ClipRect() and that seems to be the causes for the regression. --HG-- extra : rebase_source : 65e0d29d67b51a3780448eaecfde33dbcb6b99b1 |
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| .. | ||
| android | ||
| gonk | ||
| mac | ||
| os2 | ||
| tests | ||
| unix | ||
| win | ||
| ExternalHelperAppChild.cpp | ||
| ExternalHelperAppChild.h | ||
| ExternalHelperAppParent.cpp | ||
| ExternalHelperAppParent.h | ||
| Makefile.in | ||
| moz.build | ||
| nsCExternalHandlerService.idl | ||
| nsContentHandlerApp.cpp | ||
| nsContentHandlerApp.h | ||
| nsDBusHandlerApp.cpp | ||
| nsDBusHandlerApp.h | ||
| nsExternalHelperAppService.cpp | ||
| nsExternalHelperAppService.h | ||
| nsExternalProtocolHandler.cpp | ||
| nsExternalProtocolHandler.h | ||
| nsHandlerService.js | ||
| nsHandlerService.manifest | ||
| nsIContentDispatchChooser.idl | ||
| nsIExternalHelperAppService.idl | ||
| nsIExternalProtocolService.idl | ||
| nsIExternalSharingAppService.idl | ||
| nsIExternalURLHandlerService.idl | ||
| nsIHandlerService.idl | ||
| nsIHelperAppLauncherDialog.idl | ||
| nsLocalHandlerApp.cpp | ||
| nsLocalHandlerApp.h | ||
| nsMIMEInfoImpl.cpp | ||
| nsMIMEInfoImpl.h | ||
| nsWebHandlerApp.js | ||
| nsWebHandlerApp.manifest | ||
| PExternalHelperApp.ipdl | ||