Chris Lord 70e676b14d Bug 745177 - Retain and re-use uploaded GL tiles. r=ajuma
Rather than discarding uploaded tiles once they fall outside of the valid
region, shuffle them off into a separate tile-store with all the metadata they
need to render them, and render them in the areas that our current valid
region doesn't cover in TiledThebesLayerOGL::RenderLayer.
2012-04-24 22:48:33 -04:00
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