Glitchy Rendering on ver. 1.8

I would recommend using the Mojang Support Center technical support resource, such as the help chat, to see if you can't fix the issue there. You might need to reinstall your graphics drivers, or something like that.

I am showing this in high quality video here and explain a bit: http://youtu.be/jq-wCzHKFLs
(feel free to add link in description if you want to)

Also I did a full reinstall of my computer including the graphics drivers and got the same issue after the reinstall.

I will do a crash report next time it happens.

Crash report from Cyoor (Look at http://youtu.be/jq-wCzHKFLs for more info)

Both reports indicate the same graphics drivers in usage. I recommend you both update to the most current ones available here.

@unknown: I have updated to the latest drivers and the problem still occurs.

Can you make a new crash report?

This keeps happening to me with the latest driver too. I can solve the problem by tweaking the mipmapping level but it's just a emergency patch that works only until it happens again.

@unknown: I guess that you want a crashreport when it happens.. So I will have to wait for it to occur again.
I will make a report with the drivers you linked to, and then update again to the drivers that just came out. (However in the latest the only things that changed were unrelated to minecraft)

But I will try both, and when I have a report from both, I will post them all at the same time.

I received an email which notified me that this issue was "reopened" but now it says "resolved." I am confused.

Anyways, I am attaching a new crash report. The same graphical issue has been occurring off and on. Today, it occurred once and was fixed when I turned the mipmapping level to 3 and then it occurred again. The diver for the video card is the latest.

This is the new crash report.

So if I understand correctly, this issue only occurs at random, and only with mipmapping at level 4?

No, it does occur at level 3. As I wrote above, it occurred after it was once fixed by turning the mipmapping level from 4 to 3. Turning it down to 2 or even 1 is somewhat unbearable for me graphical quality wise, so I have't really tried the lower levels...

I'll leave this report open for the time being, as it is not completely clear what the cause of the issue is. It does seem related to graphics drivers somehow, but it's difficult to say in what capacity.

Please try AMD Catalyst 14.11.2 beta:
Nevermind. This ticket is about NVDIA, not AMD.

BTW, Whenever I have this problem (which occurs only on ver.1.8, just to remind you again), I can just quick fix it by EITHER turning the mipmapping level UP or Down only until it happens again.

Crash report for when it happened using 1.8 and NVIDIA 344.60 drivers uploaded.

Will update my drivers and send a crash report every new driver I try.

Today I realized that at night you can see the sun moving through the bugged texture.

As for the quick fix I mentioned above, you don't necessarily need to lower nor raise the mipmapping level. Once you open the mipmap level setting, you just have to tweak it a little and even set it back to the previous setting on which the problem has occurred. Then the bugged texture will be gone for a while.

the diagonal line

OK, I found that the glitch doesn't occur when I turn Mipmap completely off (to "0") but I have another glitch instead (screenshot attached https://bugs.mojang.com/secure/attachment/86459/2014-12-09_16.12.18.png).

Even when I can prevent the glitch by turning Mipmap off, I don't want this problem to be labeled as solved and want them to find some fix for this problem because I end up having another graphical issue, the glitch occurs only on the version 1.8 (1.8.1) and we should never be given deteriorated graphics because of some function added to the newer version.

Still there in 1.8.1 with nVIDIA 347.25 drivers (Latest)
I have not tried 1.8.2-pre yet
It happens around once every played hour on average and will only be normal again by restarting the game completely or changing the mipmap.

Oh.. And I have tried 3 different graphics cards (all of them GTX 970) separately. Same result with all of the cards.

Added crash report (that i forced).
I am using the latest nVIDIA drivers and minecraft version 1.8.2-pre6

This is quite anoying and needs to go away. Any tests that I can do to give more feedback?

The most recent log attached (JVM crash) suggests Open Broadcaster recording software was in use (or at least installed). If this software is removed, and the computer restarted, does the issue still occur?

@hiko mollo, we've been focusing on nvidia drivers, but can you try updating your Intel drivers. (Pierre I don't know if you have the same CPU).

@unknown: I do not have the same processor. Mine is a intel i7-4790K
Regarding the OBS running, the same thing happens even when that is not running or even installed. I got this problem before installing the program.

@unknown: I will install the latest intel iris drivers, just to make sure (even though I am using the GeForce GTX 970 as my graphics card)
I will get back with more info once tested.

@unknown: I installed the latest intel graphics drivers and also have the latest nvidia drivers. I use the 1.8.2-pre6 snapshot, and it happened again today.
So updating the intel drivers for the internal graphics card did not help anything. (As I would expect, since I use the Geforce GTX 970 as my main graphics card on the screen that I play minecraft on.

Some more info that might help to figure it out:
I have a setup with 2 screens. One is an analog output through a VGA cable connected to the internal intel graphics card on my motherboard.
The other screen (main screen) is the screen that I am playing minecraft on and that one is connected to the Geforce GTX 970 card.

I will start to keep a log of when i think it happen in the future, so here is some info about the last time it happened:
It happend when I went through a portal.
I was playing in windowed mode (not fullscreen) and was streaming to twitch using OBS at the moment it occured.
It happened only once during the 3 hour stream.
I was playing on a server that is a bit laggy.

Worth noting is that I have basically ruled out OBS as the cause, since it happens with it both switched on and off. I just happen to play mostly while it is on, since I do youtube and twitch a lot.

Has this issue occurred with OBS uninstalled?

Cube, Pierre Walden's comment from about a week ago:

Regarding the OBS running, the same thing happens even when that is not running or even installed.