[Bug 18490] Empire: Total War crashes when loading a map

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=18490





--- Comment #6 from Warren Dumortier <nwarrenfl at gmail.com>  2009-10-11 12:47:39 ---
I've contacted Stefan Dossinger and he says this is because X11 doesn't allow
opengl rendering to the root window. He also said we should write a test that
does this on Windows and see what it returns:

Q1: What does Windows return?
Q2: If Windows creates the device properly, what happens if you render to it?
Q3: What happens if you present the rendering with a dest window override in
swapchain::present?
Q4: What happens if you present without a dest window override?

The crash happens because SetPixelFormat is called on screen device context
(GetDC(NULL)). Wine refuses to set pixel format and returns FALSE which causes
the crash.

It seems there could be a solution if we know the answer of Q3. In d3d, you can
change the window the rendering is copied to at the end of the draw, so the app
might set up the device to draw to the NULL window first and later on send the
output to a non-NULL window. For this we could render offscreen, and later when
we get the real window switch to onscreen rendering.

-- 
Configure bugmail: http://bugs.winehq.org/userprefs.cgi?tab=email
Do not reply to this email, post in Bugzilla using the
above URL to reply.
------- You are receiving this mail because: -------
You are watching all bug changes.