https://bugs.freedesktop.org/show_bug.cgi?id=71887
--- Comment #5 from Victor Luchits vluchits@gmail.com --- Created attachment 89622 --> https://bugs.freedesktop.org/attachment.cgi?id=89622&action=edit 3.12 + Mesa-dev (Intel) screenshot
Same spot on Intel Ivybridge Mobile (HD 4000). Looks identical both in Mesa 9.3 and Mesa 10-dev.