[Source] Need help with strange leak

Hello there I have a weird leak I have never experienced before and I do not know how to fix it sadly

First picture shows my normal level without any leak (woho!)

[Blocked Image: http://i.imgur.com/KEvUxae.jpg?1]

Second picture shows the leak, it ONLY occurs when I look at a very specific point in my level, has anyone ever had this problem before and the solution?

[Blocked Image: http://i.imgur.com/obgvJsC.jpg?1]

Look at the top of the 2nd picture, the clear blue sky is gone

Quote from laminutederire

I had something like that once, but it was an issue with visleaves, and occurred only in a definite space area, is it the same for you?

Yepp exact same!

Quote from tomm

welcome to hint/skip nightmare(I'm just guessing)

I have tried removing some hint blocks but I can remove all to see what happenes

Quote from laminutederire

as tomm said it's probably a hint issue. Try to rebuild those in that area to see if it is better?

Will post results as soon as I can : -)

I have removed all hint and skip and it still persists : /

Compile log incoming as soon as possible and I will try the Load Portal File : -)!

Ran without vis and it is for sure visleafs that are at fault!

Quote from Squad

Can you post the compile log? Also, are you using (horizontal) areaportals in your map?

I will post it right now : -) and I tried without areaportals problem remains (no Idea if they are horizontal or not(?))

karam/karam.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/knife_
m9_bay/knife_m9_bay.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/knife_
t/knife_t.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/knife_
tactical/knife_tactical.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/mach_m
249para/m249.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/mach_n
egev/mach_negev.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_2
23/pist_223.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_c
z_75/pist_cz_75.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_d
eagle/pist_deagle.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_e
lite/m9a1.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_f
iveseven/fiveseven.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_g
lock18/pist_glock18.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_h
kp2000/pist_hkp2000.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_p
250/p250.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_t
ec9/pist_tec9.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_ak
47/ak47.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_au
g/rif_aug.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_fa
mas/rif_famas.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_ga
lilar/rif_galilar.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_m4
a1/rif_m4a1.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_m4
a1_s/rif_m4a1_s.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/rif_sg
556/rif_sg556.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/shot_m
ag7/shot_mag7.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/shot_n
ova/shot_nova.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/shot_s
awedoff/shot_sawedoff_01.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/shot_x
m1014/shot_xm1014.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_bi
zon/bizon.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_ma
c10/smg_mac10_1.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_mp
7/smg_mp7.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_mp
9/smg_mp9.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_p9
0/smg_p90.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/smg_um
p45/smg_ump45.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/snip_a
wp/awp.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/snip_g
3sg1/snip_g3sg1.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/snip_s
car20/snip_scar20.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/snip_s
sg08/snip_ssg08.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/snip_s
sg08/snip_ssg08_scope.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/pist_r
evolver/pist_revolver.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/knife_
falchion_advanced/knife_falchion_advanced.vmt.
CustomMaterialManager: Cached KeyValues materials/models/weapons/v_models/knife_
push/knife_push.vmt.
materialPath: C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Globa
l Offensive\csgo\materials
Loading C:\Users\stmafo1\Google Drive\de_benq\de_aqueduct.vmf
Map revision 6304
Can't find surfaceprop panel for material METAL/PRODVENTA, using default
Can't find surfaceprop stone for material DE_CBBLE/SANDSTONE_WALL_01, using defa
ult
Patching WVT material: maps/de_aqueduct/de_mirage/plaster/de_mirage_plaster_salm
on1_blend_wvt_patch
Patching WVT material: maps/de_aqueduct/de_mirage/ground/de_mirage_ground_tilec_
blend_diffuse _wvt_patch
Patching WVT material: maps/de_aqueduct/de_nuke/nukblenddirtgrass_wvt_patch
Patching WVT material: maps/de_aqueduct/concrete/blend_blacktopsand_01_wvt_patch

Patching WVT material: maps/de_aqueduct/de_mirage/plaster/de_mirage_plaster_blue
1_blend_wvt_patch
Patching WVT material: maps/de_aqueduct/de_mirage/ground/de_mirage_ground_tileh_
blend2_diffuse_wvt_patch
Patching WVT material: maps/de_aqueduct/de_mirage/base/de_mirage_top_ver1_blend_
wvt_patch
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (1)
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
Processing areas...done (0)
Building Faces...done (0)
Chop Details...done (1)
Find Visible Detail Sides...

DRASTIC MEMORY OVERFLOW: Fell out of small block heap!

Merged 5284 detail faces...done (3)
Merging details...done (1)
FixTjuncs...
PruneNodes...
WriteBSP...
done (2)
writing C:\Users\stmafo1\Google Drive\de_benq\de_aqueduct.prt...Building visibil
ity clusters...
done (0)
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Building Physics collision data...
done (1) (2824064 bytes)
Placing detail props : 0...1...2...3...4...5...6...7...8...9...10
Compacting texture/material tables...
Reduced 12300 texinfos to 8673
Reduced 511 texdatas to 466 (16836 bytes to 15415)
Writing C:\Users\stmafo1\Google Drive\de_benq\de_aqueduct.bsp
12 seconds elapsed
CDynamicFunction: Closing library 'Kernel32.dll' (779F0000)

-------------------------------------------------------------------------------
Running command: cd "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strik
e Global Offensive\bin"
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------
Running command: "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike G
lobal Offensive\bin\vvis.exe" -game "C:\Program Files (x86)\Steam\steamapps\comm
on\Counter-Strike Global Offensive\csgo" -fast "C:\Users\stmafo1\Google Drive\de
_benq\de_aqueduct"
-------------------------------------------------------------------------------

CDynamicFunction: Loading library 'Kernel32.dll' (779F0000)
CDynamicFunction: Lookup of 'TryEnterCriticalSection' in 'Kernel32.dll': 77ECBEC
0
Valve Software - vvis.exe (Dec 17 2015)
fastvis = true
4 threads
reading c:\users\stmafo1\google drive\de_benq\de_aqueduct.bsp
reading c:\users\stmafo1\google drive\de_benq\de_aqueduct.prt
2549 portalclusters
8395 numportals
BasePortalVis: 0...1...2...3...4...5...6...7...8...9...10 (2)
Optimized: 308495 visible clusters (0.00%)
Total clusters visible: 5093328
Average clusters visible: 1998
Building PAS...
Average clusters audible: 2539
visdatasize:1573731 compressed from 1631360
writing c:\users\stmafo1\google drive\de_benq\de_aqueduct.bsp
3 seconds elapsed
CDynamicFunction: Closing library 'Kernel32.dll' (779F0000)

-------------------------------------------------------------------------------
Running command: cd "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strik
e Global Offensive\bin"
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------
Running command: "C:\Program Files (x86)\Steam\steamapps\common\Counter-Strike G
lobal Offensive\bin\vrad.exe" -game "C:\Program Files (x86)\Steam\steamapps\com
mon\Counter-Strike Global Offensive\csgo" -noextra "C:\Users\stmafo1\Google Driv
e\de_benq\de_aqueduct"
-------------------------------------------------------------------------------

CDynamicFunction: Loading library 'Kernel32.dll' (779F0000)
CDynamicFunction: Lookup of 'TryEnterCriticalSection' in 'Kernel32.dll': 77ECBEC
0
Valve Software - vrad.exe SSE (Dec 17 2015)

Valve Radiosity Simulator
4 threads
[Reading texlights from 'lights.rad']
[2 texlights parsed from 'lights.rad']

Loading c:\users\stmafo1\google drive\de_benq\de_aqueduct.bsp
Setting up ray-trace acceleration structure... Done (5.11 seconds)
22491 faces
8 degenerate faces
1044030 square feet [150340336.00 square inches]
45 Displacements
16038 Square Feet [2309514.75 Square Inches]
22483 patches before subdivision
153037 patches after subdivision
sun extent from map=0.087156
21 direct lights
BuildFacelights: 0...1...2...3...4...5...6...7...8...9...10 (40)
BuildVisLeafs: 0...1...2...3...4...5...6...7...8...9...10 (146)
transfers 43822893, max 3863
transfer lists: 334.3 megs
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (1)
Bounce #1 added RGB(419413, 305993, 253434)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #2 added RGB(84132, 56300, 40820)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #3 added RGB(17360, 10716, 6935)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (1)
Bounce #4 added RGB(3993, 2261, 1293)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #5 added RGB(959, 497, 252)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #6 added RGB(244, 116, 52)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (1)
Bounce #7 added RGB(65, 28, 11)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #8 added RGB(18, 7, 3)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #9 added RGB(5, 2, 1)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (1)
Bounce #10 added RGB(2, 1, 0)
GatherLight: 0...1...2...3...4...5...6...7...8...9...10 (0)
Bounce #11 added RGB(0, 0, 0)
Build Patch/Sample Hash Table(s).....Done<0.0453 sec>
FinalLightFace: 0...1...2...3...4...5...6...7...8...9...10 (18)
FinalLightFace Done
0 of 0 (0% of) surface lights went in leaf ambient cubes.
ThreadComputeLeafAmbient: 0...1...2...3...4...5...6...7...8...9...10 (19)
Writing leaf ambient...done
Ready to Finish

Object names Objects/Maxobjs Memory / Maxmem Fullness
------------ --------------- --------------- --------
models 115/1024 5520/49152 (11.2%)
brushes 7300/8192 87600/98304 (89.1%) VERY FULL!
brushsides 55155/65536 441240/524288 (84.2%) VERY FULL!
planes 25010/65536 500200/1310720 (38.2%)
vertexes 44810/65536 537720/786432 (68.4%)
nodes 5539/65536 177248/2097152 ( 8.5%)
texinfos 8673/12288 624456/884736 (70.6%)
texdata 466/2048 14912/65536 (22.8%)
dispinfos 45/0 7920/0 ( 0.0%)
disp_verts 3613/0 72260/0 ( 0.0%)
disp_tris 5952/0 11904/0 ( 0.0%)
disp_multiblend 0/0 0/0 ( 0.0%)
disp_lmsamples 48146/0 48146/0 ( 0.0%)
faces 22491/65536 1259496/3670016 (34.3%)
hdr faces 0/65536 0/3670016 ( 0.0%)
origfaces 18175/65536 1017800/3670016 (27.7%)
facebrushes 1445/0 2890/0 ( 0.0%)
facebrushlists 22491/0 89964/0 ( 0.0%)
leaves 5655/65536 180960/2097152 ( 8.6%)
leaffaces 29152/65536 58304/131072 (44.5%)
leafbrushes 13964/65536 27928/131072 (21.3%)
areas 13/1024 104/8192 ( 1.3%)
surfedges 181235/512000 724940/2048000 (35.4%)
edges 118406/256000 473624/1024000 (46.3%)
LDR worldlights 21/8192 2100/819200 ( 0.3%)
HDR worldlights 0/8192 0/819200 ( 0.0%)
leafwaterdata 4/32768 48/393216 ( 0.0%)
waterstrips 3002/32768 30020/327680 ( 9.2%)
waterverts 0/65536 0/786432 ( 0.0%)
waterindices 60246/65536 120492/131072 (91.9%) VERY FULL!
cubemapsamples 36/1024 576/16384 ( 3.5%)
overlays 451/1024 158752/360448 (44.0%)
LDR lightdata [variable] 9235976/0 ( 0.0%)
HDR lightdata [variable] 0/0 ( 0.0%)
visdata [variable] 1573731/16777216 ( 9.4%)
entdata [variable] 190765/393216 (48.5%)
LDR ambient table 5655/65536 22620/262144 ( 8.6%)
HDR ambient table 5655/65536 22620/262144 ( 8.6%)
LDR leaf ambient 25140/65536 703920/1835008 (38.4%)
HDR leaf ambient 5655/65536 158340/1835008 ( 8.6%)
occluders 0/0 0/0 ( 0.0%)
occluder polygons 0/0 0/0 ( 0.0%)
occluder vert ind 0/0 0/0 ( 0.0%)
detail props [variable] 1/12 ( 8.3%)
static props [variable] 1/133344 ( 0.0%)
pakfile [variable] 2801171/0 ( 0.0%)
physics [variable] 2824064/4194304 (67.3%)
physics terrain [variable] 8228/1048576 ( 0.8%)

Level flags = 4

Total triangle count: 63959
Writing c:\users\stmafo1\google drive\de_benq\de_aqueduct.bsp
3 minutes, 52 seconds elapsed
CDynamicFunction: Closing library 'Kernel32.dll' (779F0000)

-------------------------------------------------------------------------------
Running command: copy "C:\Users\stmafo1\Google Drive\de_benq\de_aqueduct.bsp" "C
:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Global Offensive\csg
o\maps\de_aqueduct.bsp"
-------------------------------------------------------------------------------

Finished. Press a key to close.

I have never learnt what to keep as brushes and what to make into func details but I assume I should go a bit more crazy with my func_detailing?

Quote from 3Dnj

Don't test leaves performances with Vvis in fast, you need a full compile to check if they are working well. Because fast don't calculate visibility between leaves.

also this kind of error can happen when your leaves are damn too complicated, something like this :

[Blocked Image: http://i67.tinypic.com/4jvmme.jpg]

Also 90% brushes, that's a huge map !!

(The Aqueduct is made out of a lot of brushes hehe)

Quote from Squad

I stronly recommend to read @will2k's Man vs Engine. It covers func_detailing, as well as areaportals, occluders and more.

Basically, when you check off all visgroups except for world brushes, you should be left with basic square rooms preferably.

Here's an example of HL2 with everything disabled but world brushes. It's not the world's best example, since they forgot to func_detail some brushes, but you can see it gets rather empty when disabling func_details

[Blocked Image: http://developer.valvesoftware.com/w/images/c/cb/C17plaza-worldbrush.jpg]

If you're done optimizing your map, there should be a good chance the leak issue will be solved automatically, as @El_Exodus already mentioned.

Thank you so much for the help : -)! I am for ever in debt to this community!