[Bug 29137] New: [r300g] troubles with wine and "r300: Max size of the constant buffer is 256*4 floats."

[bugzilla-daemon@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29137

           Summary: [r300g] troubles with wine and "r300: Max size of the
                    constant buffer is 256*4 floats."
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: drakkk@centrum.cz


When running Sins of a Solar Empire under Wine all 3D objects are black, the
only thing which is rendered correctly are menus and control panels.
Main problem here is this massage: r300: Max size of the constant buffer is
256*4 floats.

Some time ago there was a bug 27996, however it was about crash and later I
forgot about this issue because I found a workaround (disabling use of GLSL in
Wine). 

>From bug 27996: "OK so the problem is the game creates a larger constant buffer
than hw can handle, but it seems to use only a small portion of the buffer.
I've changed the code so that it does not abort"
Since the game was working fine with this hardware in Windows (and my RV530 is
well above minimum requirements) I suspected this to be a Wine issue and I
asked at their forums, sadly with little response. Finally soreau at #radeon
said this in theory can be fixed in driver and advised to open a bug here.

This issue is not only affecting SoaSE, I also saw this message in wine d3d9
test run and when I was experimenting with other games like for example
Starcraft 2.

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