Linked by Kroc Camen on Sat 26th Jun 2010 10:48 UTC
Internet Explorer Microsoft have released IE9 Platform Preview 3, an application that gives developers access to the IE9 rendering engine (it's not a full browser). In this update they have added hardware accelerated HTML5 Video, Canvas, Fonts (using WOFF) and big improvements in JavaScript with ES5, DOM Traversal, L2 and L3 events and 83/100 Acid3 score. It sits between Firefox and Chrome 6 on JavaScript speed, but outperforms every browser in real tests.
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RE[5]: Real tests
by dpJudas on Sat 26th Jun 2010 14:26 UTC in reply to "RE[4]: Real tests"
dpJudas
Member since:
2009-12-10

What a silly conspiracy theory.

The hyped hardware acceleration in IE9 is nothing more than IE changing from using the GDI scanline renderer to the Direct2D renderer they added in Windows 7. This is a public API and so any competitor can also use this for their rendering if they so desire.

Just like any other modern windowing system, Windows Vista and Windows 7 stores each window in a texture on the GPU, regardless of what technology you use for the rendering. The windowing system then offers a series of different technologies to fill that texture with contents. In Windows those are GDI, DirectDraw, Direct3D, Direct2D and OpenGL.

What we are talking about here is simply a new interface that is more compatible with the way a modern GPU works. The original GDI graphics API makes some assumptions about the graphics card that isn't true anymore and therefore virtually everything in GDI has been running in software. Microsoft gave up on accelerating it and instead wrote Direct2D and now are bragging how fast IE gets if they use that instead.

If you wonder what is wrong with GDI, then its small subtle things like being able to render directly to the screen (which doesn't make sense when your display window manager does that) and the entire way bitmaps were designed.

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