[Quake2] Flickering brush

[dichtfux]

I've got a strange flickering brush in my Quake II map, hope someone in here knows what to do about it. It looks a bit like z-fighting (which it definitely is not) and is hard to show on screenshots because you have to look at the sport and move a bit to really notice it in-game. I'll it try anyways, but if you have the time to look at the issue in-game, the map can be found at my website (it appears in both the old quake2 version and the new quake2world version).

Here's the spot in my map resurrection that I'm talking about. You can only see the flickering from below though, so the next images are taken from the lower level, looking up towards the brush.



Here is the flickering brush, hard to spot on a static image as I mentioned. I'll explain what you are looking at above the next screenshot.


Ok, the brushes are marked in red. The pink area is the flickering part. Note that the clang-texture seems to be applied to the right brush in the whole flickering area (marked in pink) though it is not. The flickering is worst in the yellow area and looks like z-fighting there.


Here is the same spot in the editor, showing the brushes.


I tried deleting the brush and replacing it with a new one, but the new brush shows the same behaviour as soon as I put it in that place and shape. If I move that brush a few units away, the behaviour stops but reappears when I move it back. I've asked a few people about this but noone could help so far, hope someone in here knows what to do about it.

[obsidian]

In that last screenshot, those selected brushes will cause some T-juncs that you'll want to fix. That may be the cause of the issue you are describing.

[dichtfux]

Hm, I fixed this, but it still feels strange.

I had the same problem in another spot. I fixed one of the spots by removing multiple brushes and replacing them by a single one:

(this is the spot mentioned in the original post)


..and the other one by doing the opposite (splitting a single brush in 2):

(this is the second spot, the flickering was in the yellow area and I split the bridge in the middle as you can see)


Whatever. Thanks for all suggestions.