UT2004 cube map reflection problem

Submitted by almos

Assigned to mes..@..op.org

Link to original bug (#105494)

Description

In the map dm-antalus there is a small pond and the surrounding area is reflected on its surface (this map is included in the demo version btw). Part of this reflection is missing, depending on the viewing angle (see the screenshots). It looks like a clipping issue. Other cube map reflections in the game are also affected, but this is where it's the most prominent.

As far as I can remember this bug wasn't present a few years ago when I last played this game (mesa was around version 7-8 back then), so I assumed this was a regression. However, the earliest version of mesa that I could compile with the oldest llvm in my distribution is 11.0, and that one already has this bug. I'll try to get an earlier llvm for mesa 10 and 9.

Drivers tested: radeonsi, llvmpipe.

Version: git