The rendering is quite wrong.
Please only reopen with the information to do anything about it. In this case, in addition to the usual setup information, screenshots / apitraces demonstrating the problem would be useful.
Created attachment 98495 [details]
Created attachment 98496 [details]
Created attachment 98497 [details]
Created attachment 98498 [details]
I did setup apitrace on my mesa-based system: up-to-date fedora rawhide.
Would you want a trace of a time slice of the screen I upload screenshots from?
This looks like a duplicate of bug 66067.
*** This bug has been marked as a duplicate of bug 66067 ***