Doomworld Forums - Odd texture behavior in PrBoom and Eternity

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Vordakk
Forum Regular

Posts: 862
Registered: 07-10

I'm in the process of testing a new project of mine using a few different types of source ports(ZDoom, Eternity, and PrBoom). One thing I don't understand is how Eternity and PrBoom handle certain textures when they are applied to sidedefs that are short(like 8-16 pixels tall). The only way for me to explain this is with pictures.

In the first picture, we have the offending wall, which is COMPTALL bordered with 8-pixel tall SUPPORT3 strips on the top and bottom.

http://i.imgur.com/N0ZgPs.png

The following pic shows me stepping underneath the SUPPORT3 strips in ZDoom. Nothing bad happens at all.

http://i.imgur.com/t0Gnws.png

But in this next pic, I'm stepping underneath the SUPPORT3 strips in PrBoom(Eternity does this as well). Notice the distortion in the SUPPORT3 strip, like it's angling out. It flickers as I move also, which I can't show in a pic obviously.

http://i.imgur.com/7Lp2Os.png

So is this behavior due to the fact that PrBoom and Eternity are more closely emulating the vanilla DOOM behaviors? Obviously this wouldn't occur if I had used a STEP texture, so does it have to do with certain textures not being meant for short sidedefs? Any help would be appreciated. Thanks.

Last edited by Vordakk on 01-26-12 at 13:39

01-26-12 13:30 #

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Gez
Why don't I have a custom title by now?!

Posts: 7036
Registered: 07-07

I don't think it's a question of texture size; I think it's an issue of precision for vertices that are behind the player's back, because it reminds me of this.

But Quasar said that Eternity was free of that bug, so maybe it's something else?

E: I typed this before you added the flickered pick. Now that's really weird. I have no idea.

01-26-12 13:39 #

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Vordakk
Forum Regular

Posts: 862
Registered: 07-10

You know when you place a mid texture in a space that's shorter than the height of the texture and it bleeds through the botton when you approach it? This sorta reminds me of that for some reason.

01-26-12 14:09 #

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Mr. Chris
The term is "prehensile"

Posts: 3663
Registered: 07-02

Vordakk said:
You know when you place a mid texture in a space that's shorter than the height of the texture and it bleeds through the botton when you approach it? This sorta reminds me of that for some reason.

I thought that only happens with fence-type textures, like MIDBARS3 or MIDGRATE.

01-26-12 16:23 #

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Quasar
Moderator

Posts: 4613
Registered: 08-00

Please post a shot of this happening in Eternity. It should not be happening.

01-26-12 18:29 #

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esselfortium
Cumulonimbus Antagonistic Posting

Posts: 5268
Registered: 01-02

Unless you're running a version of Eternity from, like, 2005 or something, that bug doesn't exist anymore.

01-26-12 19:37 #

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Vordakk
Forum Regular

Posts: 862
Registered: 07-10

Quasar said:
Please post a shot of this happening in Eternity. It should not be happening.

Hey, you were right! I upgraded to version 3.40.20 "Mjolnir" and this behavior doesn't occur anymore.

But just so I can get a clearer picture, is this bug due to my failures as a mapper or just a small flaw in PrBoom?

01-27-12 00:39 #

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