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What? It is? Forgive my ignorance, but isn't it just bitmap rendering? E.g. rending a flat icon should take approx the same GPU toll as a skeumorphic icon

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Flat design lets you make smaller 9 slices I guess. Smaller textures take up less ram but even that's a stretch.

I wasn't talking about icons alone in my second statement. :/

The design trend require soft shadows to be rendered on many elements in layers which I exaggeratedly pointed out. I apologise.

Shadows lead to overdraw I suppose, but I don't believe most UI frameworks draw front to back anyway. They end up accelerating it by making large, multi-element bitmaps of the final render. It ends up being a very small cost.

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