i thought for sure i was careful in building this map .
using netradiant and current svn
how do i use the "-debugportals" command to find and fix this or is there a better way . please explain
errors :

--- SetupSurfaceLightmaps ---
WARNING: surface at ( -1088 128 1088) ( 1088 128 1152) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 128 1056) ( 864 128 1088) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1056 96 1024) ( 864 96 1056) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1056 96 1024) ( 1056 96 1056) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1024 -1056 0) ( -192 -1056 320) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1088 -1072 1192) ( 1088 -1072 1216) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1112 -1072 1192) ( 1088 -1072 1216) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1112 -2856 1216) ( 1088 -1072 1216) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -1072 1208) ( -592 -1008 1208) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -1056 1168) ( -608 -1040 1168) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -128 1152) ( 1088 128 1152) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -1040 1152) ( -832 128 1152) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1120 -2848 0) ( 1088 288 0) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 25
WARNING: surface at ( -1056 -96 1024) ( 1056 96 1024) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1056 -1024 1024) ( 864 96 1024) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1088 -1024 1056) ( 864 128 1056) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1056 -1152 1088) ( 576 -1056 1088) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 17
WARNING: surface at ( -1088 -1152 1152) ( -608 -1040 1152) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -2856 1192) ( 1088 -1072 1192) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1112 -2856 1192) ( 1088 -1072 1192) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1088 -1056 1200) ( -592 -1008 1200) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
WARNING: surface at ( -1112 -2856 1192) ( 1088 -2856 1216) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from 16 to 18
615 surfaces
525 raw lightmaps
6 surfaces vertex lit
609 surfaces lightmapped
609 planar surfaces lightmapped
0 non-planar surfaces lightmapped
0 patches lightmapped
0 planar patches lightmapped
--- SetupTraceNodes ---
************ ERROR ************
MAX_TW_VERTS (12) exceeded

I saw this thread yesterday but skipped it because I usually get smacked in the face by someone for even attempting to give any half arsed advice on a subject like this. However, seeing that this thread has remained void of replies after a day, here is it anyway:

About the warnings: Does your map use external models for terrain? If so try splitting them up in some smaller parts before importing them into radiant.

About the MAX_TW_VERTS = Max Trace Winding Vertexes:

I have had this error some times. I think it has to do with structural brushes being too complex on a small area, so this creates too many portals on a small piece of 3d space. I usually had it when creating a brush that has too many sides in one plane. You could try locating those with the .prt file if you have any or just go through your map looking for structural brushes with many sides. Try making those detail if that's possible or replacing them with something else altogether. If I remember correctly I was even able to solve this error with just splitting an offending brush in two pieces but I may be remembering this incorrectly

Hope this helps and otherwise there must be someone here who knows better, right?

the TW_max_verts isnt really what im worried about . I just listed it along with the warnings . I was able to fix it by making one cut . i too have ad this problem before . The warnings are what concerns me . I dont want this to come back later on in the map building process and bite me . so what im asking is , does -debugportals fix this this ? and how do i use it as i never have used it before .

The warnings are stuff I added to q3map2. Previously, there were no warnings in the same case.

They happen if you get more blurry lightmaps because surfaces are too large and can't be lightmapped at your specified samplesize. Either ignore it and live with blurry shadows, or fix it by splitting up the surfaces.

However, in your case, samplesize only was increased from 16 to 18, that's not much more blurry than 16. So you probably can ignore it currently. If you want to do the final compile with a lower samplesize than 16, though, keep in mind that these surfaces will always be done at 17 or 18 because of their size. So if you want to do that, split them up.

ok thank you . this is what im working on and would sure hate to mess it up later .
Im guessing the detail is what is giving me the optional error

Nope, this error does not come from detail, but from lack thereof. Try splitting up that large floor brush into four or sixteen, and see if the warnings get less. Do the same for any large brushes there are.

Grasshopper: WOW! AMAZING!

Holy Gods of Mapping I like what I see!

C.Brutail wrote:Grasshopper: WOW! AMAZING!

seconded, oh my!

BTW, did you get rid of that error and could continue with your map?

yes, it was fixed by making a single cut through top part of the building . happily continuing to build