surfaces not closing?

[Miguel Tano Adanes]

Hi guy,

I have this model done mostly with 3Dfaces but the render shows strange white lines in the corners where surfaces meet. Does anybody have an idea on how to solve it?

Thanks

[Roy Hirshkowitz]

So the grass is generated with XFrog as well?

[Miguel Tano Adanes]

No Roy, it's a displacement material. I can upload if you wish, but it's 15 Mb.

 

[Roy Hirshkowitz]

I don't need to see it.  I suspect it's much higher res than you need.

[Miguel Tano Adanes]

You're probably right, but it's part of the entire garden outside. Maybe I could split the model in order to render sigle rooms and then assembly the building with xref.

[Roy Hirshkowitz]

I wouldn't bother.  15 MB is pretty high-res for a bitmap, though.  You may be able to get by with less.

[Miguel Tano Adanes]

I actually realized right now that the textures I used for that were around 200 dpi resolution, so I put the res down and now the material is 5 Mb! Thanks Roy!

[Roy Hirshkowitz]

dpi is meaningless without the overall texture dimensions.  Textures in excess of 1 million pixels (for example 1000 x 1000) are rarely required.

[Miguel Tano Adanes]

Thanks Roy. by decreasing dpi I also decreased the dimensions in pixel.

[Miguel Tano Adanes]

Roy, I'm going through path tracer and the grass appear like combed. Without path tracer was looking much more realistic.

[Roy Hirshkowitz]

Upload the drawing if you want me to take a look.  I have found a few problems with displacements.

[Miguel Tano Adanes]

Ok Roy, I'll update it on monday. In the meantime, I'll try to render just the grass without context and see what happens. Thanks.

[Roy Hirshkowitz]

Haven't found anything wrong so far.  The Path Tracer may be a little more sensitive to aliasing along the tile boundary.  The version I'm working with does a little better with displacements anyway. I'll release it soon.  Here's KSL's displacement grass which works a little better than yours here.  Give it a try.