global illumination and bump mapping

[Erik de Graaf]

Hi all,

Maybe someone knows a workaround for my problem.

I have a wooden elevation and i use bump mapping to give the boards more depth.
see image.


When i render this with scanline all lines are visible when i render it with vray with gi on i get the following result


Does anybody know what settings to use to get all the lines visible.

Thanks in advance,

Erik

[losbellos]

this looks interesting, could move the camera a bit and see how is it changing? Interesting because all other places the lines are good ,and visible.

[gafl]

Hi Erik,

I do know that problem...

Usually, I increase antialiasing or, and Gi solution.

bye

Gaël

[Erik de Graaf]

Gael,

increasing anti aliasing settings worked, i changed the settings from default -1,2 to 0,2 and know all the lines are visible.

Thanks,

Erik

[jacksc02]

Eric - did it increase your render times by much by changing the antialiasing settings?

Chris Jackson
cj@arcad.co.nz
www.arcad.co.nz

[Erik de Graaf]

On a render that was 20 minutes it gave an increase of about 5 minutes, but my scene is not very complicated. I think it can increase your rendertimes alot if you have a lot of detail in your scene, but you get a better looking render.

Erik

[caustic angel]

sharpen your bump.

[Erik de Graaf]

i am using the brick material as a bump map i dont't think i can sharpen that. But then i don't need to sharpen it because the antialiasing settings work great for me.

Erik

[caustic angel]

in the bitmap settings you can change the value for blur to for example 0.2.

sometimes this is a good way to avoid "bump gi-errors".


try it, maybe you can save a little bit of time!

[Erik de Graaf]

Well i tried it just now and i must say it did nothing for my vertical lines but my horizontal bump lines have improved a lot.

Thanks for the tip.

Erik

[travistlo]

try to use displacement instead of a bump

[Erik de Graaf]

i really don't want to use displacement because it uses more ram and produces higher render times, also i would have to deal with detaching faces and so on. but before the useful tip of the antialiasing increase i was considering to switch to displacment.

Erik