https://bugs.freedesktop.org/show_bug.cgi?id=108641
--- Comment #2 from steelwinged@gmail.com --- Refreshing the upload due to the link expiring: https://www38.zippyshare.com/v/d0oWhmbR/file.html
Just a remark, the capture was taken with RenderDoc 1.1 and the bug still occurs on Mesa 18.3.1.