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.