wined3d: Add support for updating part of a compressed surface.

Henri Verbeet hverbeet at
Mon Sep 8 15:10:53 CDT 2008

2008/9/6 Christof Sigel <christof.sigel at>:
> Thanks for the input, I really should have realised my approach was
> incorrect as soon as I saw that DXT textures are in blocks.
> I'm not quite sure how to go about writing a test case, would I just
> have to create and update surface(s) and check that the resulting
> surface(s) have been updated correctly?
Pretty much.

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