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FS2004 Ground poly and prevent autogen exlusion problem

Jessy

Jessy

Messages
180
Country
belgium
Hi all

I have been trying to figure out a problem for the last months and finally found the reason what is causing the problem but not why...
It all starts in this topic: http://www.fsdeveloper.com/forum/showthread.php?t=426986


And this is what I concluded to what is going on but not the why...

Jessy said:
The problem seems to be within MCX... When manually editing the asm file and converting them the flickering stops
Now trying to find out what option in MCX causes this...

EDIT: found it, prevent autogen exlcusion is the bugger... strange thing is that when manually editing the files and converting there is no autogen exclusion and everything works like a charm but when using MCX with preventing autogen exclusion it starts flickering...
Click to expand...

Anything going wrong when MCX is writing the code?
 
arno

arno

Administrator
Staff member
FSDevConf team
Resource contributor
Messages
32,883
Country
netherlands
Hi,

I don't know. I don't know which tweaks the other person is applying manually. Does that include the autogen prevention tweak or not for example?

With some more information I might be able to improve the behaviour. But it is not that the polygons are always flickering. I have seen many cases where it just works as it should.
 
Jessy

Jessy

Messages
180
Country
belgium
Dear Arno

I did not tweak anything special in the asm files, just the normal change and for some reason this showed me more autogen close to the airport than when I convert them with MCX without autogen exclusion prevention...

Code: 
 OBJECT_0_START label word
 IFIN1 OBJECT_0_FAIL, image_complex, 2, 32767
 ADDOBJ OBJECT_0_SCALE
 SHADOW_CALL OBJECT_0_SCALE
 OBJECT_0_FAIL label BGLCODE

to

Code: 
 OBJECT_0_START label word
 IFIN1 OBJECT_0_FAIL, image_complex, 2, 32767
 ADDCAT OBJECT_0_SCALE, 8
 OBJECT_0_FAIL label BGLCODE

I currently have 3 bgl's,
photoreal underground (EBOS_AIR.bgl) addcat, 8
detail layer for grass and taxiways and runway surface (EBOS_AIR_2.bgl) addcat, 12
taxilines (ebos_air_3.bgl) addcat 16

strange things is that when I use MCX for conversion with prevent autogen exclusion on all 3 bgl's only the air_2 and air_3 bgl's flicker. If I use every layer seperately, so just the air, or just the air_2 or just the air_3 without any other bgl which contains a ground poly none of the bgl's flicker. But when combined together they start to flicker. I have not tested if this would also occur when adding all ground poly's in 1 bgl file, I currently have 3 seperate bgl files...

Another strange thing is that the flicker problem doesn't occur when you leave enough layers in between, so if I would place air_2 at a layer starting from addcat, 28 the air_2 doesn't flicker... but air_3 keeps flickering if I put it on layer addcat, 32... when I would place air_2 and air_3 both at addcat, 28 none has the flicker problem, but only starting from addcat, 28, any number lower as 28 would cause flickering...
If I would place air, air_2 and air_3 all on addcat, 8 there is no flicker issue either...

if you need any more info please let me know, I would be more than happy to help sorting this issue...
 
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