[Bug] strange line

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Fishkilleur
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[Bug] strange line

by Fishkilleur » Sat Apr 30, 2011 19:43

Hello, I have a strange bug on Ubuntu 10.10 with the stable ppa :

Image

Image

I have a Nvidia graphic card.
This bug is only on this computer, not on my netbook with Ubuntu 10.10.
There is this bug with the official and non-official texture.

Thanks.
Last edited by Fishkilleur on Sat Apr 30, 2011 19:44, edited 1 time in total.
 

James
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by James » Sat Apr 30, 2011 21:46

May be a driver problem, I've seen something similar in Minetest and other games.

On mine, the 4-5 blocks closest to the player in any direction render fine, but then some faces are missing from other blocks. I've not looked at the code, but perhaps it is to do with scaling the textures that are far from the camera.
 

Evrim
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by Evrim » Fri May 06, 2011 19:19

Turn auto antialiasing off at your nVidia driver settings, this option causes bugs with opengl also on Minecraft
 

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Fishkilleur
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by Fishkilleur » Fri May 06, 2011 19:29

Since my uprage to 11.04, I haven't this bug.
 

Evrim
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by Evrim » Fri May 06, 2011 19:32

That's due to Natty's new openGL library usage or your drivers were updated to close anti-aliasing off

Glad you got it fixed
 

adiblol
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by adiblol » Sat May 07, 2011 18:20

James wrote:On mine, the 4-5 blocks closest to the player in any direction render fine, but then some faces are missing from other blocks. I've not looked at the code, but perhaps it is to do with scaling the textures that are far from the camera.


The same on my Intel 82865/855GM graphics chip and Debian sid.
 

adiblol
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by adiblol » Sat May 14, 2011 22:02

Friend told me that these problems are caused by Z buffer (AKA depth buffer). You should increase its resolution, I don't know how to do this from xorg.conf (if it is possible outside the game...).

Z buffer resolution can be chosen when requesting the GLX visual when initializing OpenGL - I don't know if Irrlicht interfaces the selection mechanism, if it does the issue probably could be fixed.
 

adiblol
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by adiblol » Thu Aug 04, 2011 12:42

It is not Z buffer problem, but mipmaps problem.
Patch: http://pastebin.com/vFxYfAaK
Use only if you experience graphic glitches, it reduces video quality otherwise.
Last edited by adiblol on Thu Aug 04, 2011 14:47, edited 1 time in total.
 

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Calinou
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by Calinou » Thu Aug 04, 2011 13:30

Do not use antialiasing and/or anistropic filtering from your GPU's control panel.
 


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