UV problem?? First time I've had this.

[Sculley]

I've been knocking out a low poly model of a spitfire and started to texture it with uv's but there seem to be a problem and I cannot find why its happening. I've never had it before so its totally confused me.

Anyone know why it seem to happen.. also doublesided surfaces cause pixel errors when raytraced transparency is turned on in 8.5... I checked the model in 7.5 and it still rendered strange with UVs.. but the double side problem goes.

Any ideas??

[mkiii]

i doubt that this is anything to do with uv maps. It looks like you have the ray traced shadows problem. Check if it is by rendering with ray traced shadows turned off first.

The solution is often just to triple polys around the offending area, or stick with shadow mapped lights.

To be on the safe side also make sure points are correctly welded merged & no 2 pointers are present.

[Mr. Black]

I had a similar problem with a ship model I was building. Lowering the smoothing angle helped some.

[somnambulance]

I had a similar problem with a ship model I was building. Lowering the smoothing angle helped some.

It must be common in ship models.. me too.

Yep, 1st make sure all your points are merged. 2nd, make sure you dont have doubled up polys, unify them. If it still is doing that... post your wires, do you have sub D on?

[lardbros]

Hi Stephen,
I've also had similar things when using more than one UV map on a surface. (i think that's how it happened anyway). If it is just a single UV map (which it probably is seeing as it's low-poly) could it be coz there are polys around that aren't in the UV map? I can't quite remember what causes it.

Just check to see if those black triangles change colour if you alter the surface colour, i'd have thought that if it does it's a texture prob, if it doesn't it will be a poly prob.

[Sculley]

Hi all.. still same problem...

Right.. firstly.. tried triangulating.. and no change. Problem continues.

When the problem first arrised I checked and double checked the model.. there's no doubled up polys... also I checked the maps.. Ive made about 9 different maps using different projections and also tried seperating.. creating UVs and re-merging... and yet.. still same problem occurs.

Changing the smoothing angle doesnt do anything either.. so its completely comfused me.

So if anyone has an idea.. it would be nice.. Not really in the mood to remodel without knowing why it happened.. likelyness is I'll spend another few hours and have the same problem.

Help me :( :help: :help: :help: :help: :help:

[somnambulance]

post your wires. do you have subD on?

[Sculley]

Nope.. no subd's... tis all poly modelled today... i modelled while waiting on a delivery.. so its a quick model.. as too low poly.. compared to my normal work.. www.vfx-sjc.co.uk (http://www.vfx-sjc.co.uk)

Here's the wires... im wondering whether modelling at around 1km and then resizing to 5m causes it? Its the only thing i can think i did differently to modelling normally.

oh.. and the odd white pixel was an accident when my wacom pen fell over.. so ignore it :)

[Gettarobox]

is that a selected point on there? maybe there are a few of those that need to go bye bye.

[DogBoy]

is that a selected point on there? maybe there are a few of those that need to go bye bye.

No, it's where his Wacom pen fell ;)

[shaol]

It's happened to me too. Maybe post this in LightWave 3D Technique Discussions dihttp://vbulletin.newtek.com/forumdisplay.php?f=28 It would be nice to find out how to fix this problem since it is common.