IIRC there was the open question of a fast upload path for software decoding to avoid a painful copy and I just haven't found the bug about it.
Bug 1629788 Comment 2 Edit History
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IIRC there was the open question of a fast upload path for software decoding to avoid a painful copy and I just haven't found the bug about it. (I think it was something like "Software decode directly into OpenGL surface")