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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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| .. | ||
| AppUnits.h | ||
| gfxCore.h | ||
| gfxCrashReporterUtils.cpp | ||
| gfxCrashReporterUtils.h | ||
| Makefile.in | ||
| moz.build | ||
| nsBoundingMetrics.h | ||
| nsColor.cpp | ||
| nsColor.h | ||
| nsColorNameList.h | ||
| nsColorNames.h | ||
| nsCoord.h | ||
| nsDeviceContext.cpp | ||
| nsDeviceContext.h | ||
| nsFont.cpp | ||
| nsFont.h | ||
| nsFontMetrics.cpp | ||
| nsFontMetrics.h | ||
| nsGfxCIID.h | ||
| nsIFontEnumerator.idl | ||
| nsIScriptableRegion.idl | ||
| nsITheme.h | ||
| nsMargin.h | ||
| nsPoint.h | ||
| nsRect.cpp | ||
| nsRect.h | ||
| nsRegion.cpp | ||
| nsRegion.h | ||
| nsRenderingContext.cpp | ||
| nsRenderingContext.h | ||
| nsScriptableRegion.cpp | ||
| nsScriptableRegion.h | ||
| nsSize.h | ||
| nsThebesFontEnumerator.cpp | ||
| nsThebesFontEnumerator.h | ||
| nsThebesGfxFactory.cpp | ||
| nsThemeConstants.h | ||
| nsTransform2D.cpp | ||
| nsTransform2D.h | ||
| X11Util.cpp | ||
| X11Util.h | ||