[Therion] Loch giving strange artifacts

[Benedikt Hallinger]

I managed to compile myself[*] but still get the same results.
If you don't get such errors i strongly presume that this is a problem 
either in the underlying libs but i think more probable an issue with my 
graphics card and/or linux driver.

Currently i run the following setup:
- Linux phobos 4.9.0-2-686-pae #1 SMP Debian 4.9.13-1 (2017-02-27) i686 
GNU/Linux
   - Debian GNU/Linux 9 (debian stretch / testing)
   - lxde/openbox on Xorg
- Therion from GIT (commit ca1aa8f1b7b4760b9; Fri Mar 31 21:06:03); compiled 
against VTK 6.3.0
- old Fjitsu-Siemens Amilo Xa2528
   - with an GeForce 8600M GS viedo card
   - running on noveau drivers

On my stationary PC i cannot test this as loch hangs up itself (probably an 
issue with the proprietary nvidia drivers i run there)


[*] @wookey: at debian jessie i had some strange dependency problem with 
some dependant libs of other libs, probably caused by some older mixing of 
stable/testing; just wanted you to know in case you want to dig into it. I 
upgraded to debian stretch, where i could install all libs and compile 
without trouble)



Am 2017-03-31 22:46, schrieb Benedikt Hallinger:
> Hello,
> sorry for not responding a while, i tried to debug this myself.
> Unfortunately i was not able to detect an error in my data. The compile 
> gives no warning at all and also the pdf map output looks like expected.
>
> Fortunately i was able to reproduce it in a very simple dataset (with 
> therion 5.3.15 on debian).
> Please see the attached archive.
>
> It does even happen when:
> - the data is contained in one single centerline only
> - the break in the map is commented out
> - no map definition is present at all
> - all in parallel
>
>
> Is this a bug with loch?
>
>
> With best regards,
> Beni
>
>
>
> Am 2017-03-27 10:55, schrieb Footleg:
>> Possibly your walls are inside out. Do the walls appear and vanish as you 
>> rotate the model? That is a sure sign some of your scrap boundaries are not 
>> right. Common causes are the insides of loops not flagged as outline in, or 
>> walls which cross other walls.
>>
>> Footleg
>>
>> On Fri, Mar 24, 2017 at 3:34 PM Benedikt Hallinger via Therion 
>> <therion at speleo.sk [3]> wrote:
>>
>>> Hello,
>>> in my loch model i get some strange artefacts.
>>>
>>> It seems that the further-away objects are rendered in front of the
>>> nearer-in-front objects.
>>> I would expect that the passages far away would be covered by those in 
>>> the
>>> front of the camera (as is the case where i did not yet have scraps and 
>>> only
>>> the centerline is present... look at the screenshot)
>>>
>>> What am i doing wrong?_______________________________________________
>>> Therion mailing list
>>> Therion at speleo.sk [1]
>>> https://mailman.speleo.sk/listinfo/therion [2]
>>
>>
>> Links:
>> ------
>> [1] mailto:Therion at speleo.sk
>> [2] https://mailman.speleo.sk/listinfo/therion
>> [3] mailto:therion at speleo.sk
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