. : is right. This is all scheduling and graphics stack. OS X power use in graphics is hard to reason about.
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: several different ways to draw, massively different power characteristics. Chrome is switching method
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: for context, FF uses the same power-hungry GL paths Chrome does today
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: from what (little) I understand, OS X's GL drawing infra requires full upload every frame, very power hungry
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Gecko doesn't require a full upload every frame, just invalidated area - buffers are tiled too
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: yes, but the way GL intersects with OS X seems to defeat partial update smarts (but your GPU stack may be magical!?)
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so you tile, but still end up doing whole-view sized texture updates every frame...?
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I believe Alex is talking about full window presents vs partial presents and not talking about texture upload.