Sometimes, when viewing your project after publishing, you will notice there are some jagged lines on your product.  This is known as aliasing.  There are a number of causes of this aliasing and it can be fixed in some situations.

Anti-aliasing will fail for intersecting geometry. In this case there will be no multisampling or edge antialiasing across the join where the two triangles intersect. This is one example where the antialiasing won’t even activate, the effect will be whole pixels of either one triangle or the other, with no blurring/fading between them.

However, if both intersecting triangles are the same or similar colour, and the reflection is very diffuse and low contrast, the alias-line between the intersecting triangles should not be visible.

If you have a very contrasting material applied to an object, there is a change aliasing will occur.  If you are struggling to get rid of aliasing then the only solution would be to blur the material more to reduce the effect until it is acceptable.

Aliasing on bump maps

You will sometimes find that a detailed bump map causes aliasing problems on shiny areas.  To try and reduce this effect you can slightly blur the bump map which will make the change in angle less dramatic and thus reduce any aliasing.

The problem occurs when the thin triangles in a bevelled edge are thinner than about 1 pixel on screen, at this point the bright reflection of the environment map can give effectively a thin and contrasting triangle, at a point where there is no anti-aliasing (the anti-aliasing algorithm ignores edges on the same surface).

Three main solutions to reducing aliasing on bevelled edges currently exist: