Emulator

Game Name: F-Zero GX - GFZE01

On parts of the Lightning Themed Tracks, the raindrop mask on the track will be inverted, causing most of the track to be coverted by the raindrop effect while only a few small spots aren't.

To reproduce this problem, start up the game in any modern version, go to a lightning track and drive around slowly. Most of the track is glitched with only a few spots having the proper rain effect drawn.

This glitch occurs in all builds and back-ends (that run the game) between 3.0 and 3.5-426(r0554ce927e0deebc21e12c30561c2edbabc8a74a) in both 32bit and 64bit. Glitch does occur in Software Rendering as well.

Tested on a Core i5 760 @ 3.8GHz with a GTX 470 graphics card and 8GB of Ram running Windows 7 x64
Got help from MaJoR on his i5 3570K with a GTX 275 and 8GB of Ram, running Windows 7 x64.

Screenshots/Logs:

Screenshot showing a segment with both working and broken raindrops - http://i.imgur.com/qqMrXy0.jpg
Fifolog to spot shown above - http://www.mediafire.com/download.php?gfl909v6w1gprh2

Note that because of the strange way shadows work, that when loading the fifo log, the car shadow will look incorrect.