A bit help with Spotlights

[reepblue]

Hey guys,

 

I'm currently thinking about porting my Source project over to Leadwerks, so I started to port assets over and make test scenes and scripts to see if the gameplay concept would work. I started off making a test scene and I noticed that when I put a spotlight in, I got this gross effect on my floors and ceilings.

 

 

I tried setting the light quaIity to high, although it's less apperent, the spotlight line effect is still there. I can also hide the effect by toning the brightness, but I think that it can be a design barrier down the road.

 

If you set the spotlight's "Cast Shadows" to none, the effect vanishes, along with my shadows.

 

Is there a better trick to avoid this issue, or is this a render bug. If not, then why is this happening? I'm running on a GTX 750ti if that helps, and can supply more information/files if needed.

 

I was not sure if this is a bug in the engine, or it's just something you have to watch out for like Face Clipping.

 

Thanks.

[Josh]

This is just a consequences of shadow maps. It happens in every game with real-time lighting:

 

You can reduce the artifact by increasing the light quality, moving the light away from the wall, and adjusting the shadow map range parameters.

[reepblue]

Ok, thank you for clearing this up.

[Olby]

I thought the article you pulled the image from explains how to deal with such issues, no?

 

http://http.developer.nvidia.com/GPUGems3/gpugems3_ch08.html

 

[YouGroove]

I thought the article you pulled the image from explains how to deal with such issues, no?

We must ask Josh to implement variance shadow maps from gpuGems3 then

[gamecreator]

It would be nice to not have to deal with issues like this.

 

 

Edit: I didn't try lighting quality as shadmar suggests below so maybe that would help.

[shadmar]

@reepblue

 

Sett LightningQuality to 2 in the App.lua will help, if not you can try adding this to your pointlight as a script.

 

self.entity:SetShadowOffset(0,.95,0)  --.98 is default offset.

 

But you will get skewed shadow the lesser number you put in, but shadow ackne will be reduced.

[nick.ace]

It would be nice to not have to deal with issues like this.

 

 

Edit: I didn't try lighting quality as shadmar suggests below so maybe that would help.

 

Are you sure those are shadows? They look like messed up normals (because of the hard edges and triangles), but I could be wrong.

[gamecreator]

Good thought but pretty sure. The walls sections were copied & pasted (top, bottom and sides) so they'd either be all wrong or all right.

[Josh]

It would be nice to not have to deal with issues like this.

 

 

Edit: I didn't try lighting quality as shadmar suggests below so maybe that would help.

Your model has bad normals. Just open it in the model editor, select the Tools > Calculate Normals menu item, use the default settings, and press OK. Save the model and it will appear correctly.

[gamecreator]

Thanks Josh. I appreciate you taking a look at my PM. That'll teach me to dismiss something without trying it first.