[Bug 6946] Carmageddon TDR2000 wont allow 3D Hardware rendering

wine-bugs at winehq.org wine-bugs at winehq.org
Sat Mar 22 05:03:00 CDT 2014


http://bugs.winehq.org/show_bug.cgi?id=6946

--- Comment #19 from Sebastian Riemer <Sebastian.Riemer at gmx.de> ---
Yes, it is DirectX 7 as well and it sounds very similar. Here is what needs to
be done:

1. find the function which causes trouble (debugging, disassembly, etc)
2. write a small test app with that function
3. test the test app on Windows and on latest Wine, compare the results
4. Write a prove-of-concept patch, apply to latest Wine, retest
5. improve the patch according to the Git Wine instructions, attach the working
patch to this bug report, give it to Henri for review
6. send it to the wine-devel mailing list if it is good enough
7. check if it gets accepted

One day I've installed the DirectX 7 SDK and I was kind of shocked how
different the example apps ran on Wine. In the examples there is also that
enumerator function to find the renderers which doesn't work correctly with
Wine. Sorry, but I can't remember its name.

Unfortunately, there are a lot of patches which remain uncommented and
unaccepted. I don't know if it's limited time, resources or commercial interest
of Codeweavers. But for hobbyists the effort isn't really worth it sending
patches to Wine. I made much much better experience sending patches to the
Linux kernel and other FOSS projects. Perhaps, Wine mailing lists should also
be splitted in subsystems with subsystem maintainers where you convince the
subsystem maintainer first. And having a getmaintainer script like in the Linux
kernel would also help.
Codeweavers, please come to the LinuxTag in Berlin/Germany one day! I'd like to
talk with you face to face one day!

The Carmageddon TDR 2000 demo doesn't have this bug. It uses 3D rendering right
away. Only the retail version has software renderer support and this bug.

I'm sorry that I've neglected my Carmageddon TDR 2000 AppDB maintainer duties
recently! I was so frustrated that more things are broken than fixed. I've
spent my leisure time improving my reverse engineering skills by developing the
universal elite game trainer "ugtrain" which does API hooking of malloc() and
free() to support dynamic memory and already works very well for Linux. Next
versions will support Windows and Wine as well. It will be the only universal
multiplatform game trainer with dynamic memory support. I intended this for
faster Wine testing but it is a lot of effort - still no contributions from
others. :-( At work I'm a Senior Linux Kernel Developer - Storage. But working
full-time on Wine from remote would also be a cool job for me.

I think in June I will have again more time for Wine. Then, I will retest
everything and debug this further down.

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