[Bug 13313] Half life 2 hangs with a high cpu usage at a certain point in the game

http://bugs.winehq.org/show_bug.cgi?id=13313

--- Comment #16 from Henri Verbeet  2011-03-02 08:00:44 CST ---
(In reply to comment #15)
> The attached patch allows fb_copy_to_texture_hwstretch() to work in these
> situations, eliminating the need to use the per-pixel copying in
> fb_copy_to_texture_direct(). I have no idea what it does for Half Life 2, but
> it brings NWN2 from several seconds per frame to an almost playable ~5 fps or
> so when using "OffscreenRenderingMode"="backbuffer".

I haven't reviewed that patch properly, but the basic approach makes sense to
me. Note that the size limitation is caused by the framebuffer size, not the
source surface size.