Wierd light leak that I can't figure out

[Dynedain]

I am confused. I am getting a very strange light leak under the eaves of this roof. As you can see, the roof continues well past the wall, there is no hole. I have tried moving the top of the wall above, inside, and below the roof, but nothing seems to change this error. Please advise:

[Morbid Angel]

try:
1) set vray shadow to 0.01
2) reexport your scene into a clean one
3) make sure your object/shader is double sided.
4) check your min leaf size (make sure its 0.0) check your face/level coef(maybe less then 2.0)

[timmatron]

I had something similar to that happen to me once and what was causing it fo r me was that I had the secondary rays bias higher than zero. I never did figure out why it happned, just that when I put it back to zero it rendered fine.

[vlado]

There are two reasons for this to happen:

1) Your shadow bias is more than 0.0 (it is by default); setting this to 0.0 solves the problem.
2) Your secondary rays bias is more then 0.0. Again, setting it to 0.0 solves the problem.

Best regards,
Vlado

[Dynedain]

Well, setting the secondary rays bias to 0 is the only thing that worked (vray shadow bias didn't affect it at all). Thanks guys. I just hope this doesn't introduce problems elsewhere in the model (its very very very big).

Now about some red dots....

[Morbid Angel]

Vlado said that to fix red dots check apply cropping on the maps materials of which produce red dots.

[v-cube]

reading all this above i wonder what is the use of a ray bias not equal to zero anyway?

I am not quite sure if i remember it right but wasn t it to avoid other (shadow) artifacts?

regards

Andy

[Dynedain]

Yeah, I know was trying to make a joke. I actually do have red dots, and know what to look for to correct them, but its gonna take a while. Very big scene with a lot of mats.

[percydaman]

maybe an obvious question, but have you tried rerenders apply bitmap cropping script?

[Dynedain]

reading all this above i wonder what is the use of a ray bias not equal to zero anyway?

I am not quite sure if i remember it right but wasn t it to avoid other (shadow) artifacts?

regards

Andy

It fixes the problems that show up when you have coplanar faces

[Morbid Angel]

might be dumb question but...and i heave heard this before (im esl so) whats coplanar?
lol

[Dynedain]

coplanar is when you have two faces in the same place in 3D space

Like if a box is sitting on top of a plane, the bottom face of the box and the plane are coplanar

[Morbid Angel]

i see...thanks

[Dynedain]

maybe an obvious question, but have you tried rerenders apply bitmap cropping script?

I have, and I still have overbright warnings and red dots, gonna take some more digging....joy

[Morbid Angel]

try this script

do()
on.Procedure
Begin
Convert >all.Obj GetNumsubs ()
to
Maxwell;

init.Render;
end()