https://bugs.winehq.org/show_bug.cgi?id=42930
Bug ID: 42930 Summary: Graphical glitches in "Giants Citizen Kabuto" Product: Wine Version: 2.7 Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: directx-d3d Assignee: wine-bugs@winehq.org Reporter: jnvsor@gmail.com Distribution: ---
Created attachment 58080 --> https://bugs.winehq.org/attachment.cgi?id=58080 Graphical glitches
There's a fairly heavy graphical bug in my GOG version of "Giants Citizen Kabuto" - this occurs in both normal and staging all the way down to 1.6 and probably further.
While this happens the game spams this error message: "Zero length vector"
It makes sense. You can't see in the screenshot but it looks more like random vertices are being randomly moved and the triangles are dragged all over the place.
Strangely, this is related to another issue. People seem to have issues with mouse responsiveness in GCK. I've experienced this too. Whenever I start the game I have a random chance of getting either the graphical glitches or the mouse issues, but both don't occur at the same time.
While wine complains about the game wanting a double backbuffer, using a patched wine with double backbuffer enabled doesn't fix the problem.