[Bug 18993] New: Shadows and selection circles z-fight in World of Warcraft

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=18993

           Summary: Shadows and selection circles z-fight in World of
                    Warcraft
           Product: Wine
           Version: 1.1.23
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: directx-d3d
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: eiffel56 at gmail.com


The lowest-setting shadows and selection circles in World of Warcraft do
z-fight with the ground. This is not a regression afaik, at least I haven't
seen an other behaviour yet.

As I was testing if the patch attached to Bug
#14174(http://bugs.winehq.org/show_bug.cgi?id=14174) causes problems in other
games, I noticed that the same patch does almost fix the problem in World of
Warcraft. I modified it a bit so it entirely fixes that z-fighting, but now it
doesn't fix the bug mentioned in report #14174.

As I don't really understand why its causing that, someone with enough
knowledge should investigate in it. I will attach the modified patch, allowing
to render lowest-settings shadows and selection circles correctly.

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