FB-access-wrapper?

[Alan Cox]

On Sad, 2005-01-15 at 10:47, Thomas Winischhofer wrote:
> And as regards Keith's question: No, generally not. But the shadow code
> submits very small areas and refreshing small areas is painful due to
> the USB transfer overhead. Now I "collect" the areas by building a
> "large" area covering all the small areas RefreshArea() got in the meantime.

I would have expected the merging to be dependant on the difference
between the area updated that has changed and the area updated that has
not. A single "collection" will generate very bad results on things like
diagonal lines across the screen when it should generate a set of boxes.