[Bug 13954] Only top half of screen visible

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=13954





--- Comment #17 from Alexander Dorofeyev <alexd4 at inbox.lv>  2008-06-29 12:52:35 ---
(In reply to comment #16)
> Interesting: the menu animation freezes while I move the mouse.  That's a cute
> "feature".

That's known performance issue that is most of all plaguing some 2D games like
Red Alert 2 that unfortunately isn't going anywhere any time soon (except maybe
by growth in computing power, for example games like Starcraft 1 are already
perfectly playable on new machines because they are very overpowered compared
to original specs). DirectDraw wiki article covers these problems.

> I did the "PBO" disable test below, but I'm not sure what needs further
> investigating now.
> but it didn't make any visible difference to the Thief1 demo test (it's
> difficult to do more than just run it up and see check that only the top half
> of the menu display).

Well this probably means it isn't pbo-related.

> Given that we seem to have a workaround, what's the status of this bug now?

It is more or less clear that it's glDrawPixels path that causes issues.

> Good idea, afraid I'm going to need a canned example for this; I didn't find
> anything helpful with your search string.

Well try this, I didn't download myself but it looks like it should be easy to
build via make
http://www.cs.mun.ca/~blangdon/opengl/glDrawPixels.html


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