Firefox recently got hardware acceleration in its nightly builds via Vista’s and Win7’s Direct2D acceleration. And with the Layers project promising hardware acceleration across all platforms soon (as well as IE9 also providing hardware acceleration via Direct2D) for the first time there’s a reasonable chance that we will have good performance on all platforms, even default Windows systems with Internet Explorer.
When a Direct2D supporting version of Firefox was first released last year I wrote a stupid little stresstest to see how much performance could be gained and I eventually compiled it into a video. It really does nothing but scale and rotate a bunch of image elements, but apparently the bright colors make people excited.
You can see it running side-by-side in recent versions of Opera, Safari, Chrome and Firefox with and without Direct2D here: