Renders that reveal geometry?

Deke

Sort of a new quirk I've encountered in some Daz 4.8 rendering in Iray. Some surfaces are nicely rendered while others have some triangles rendered in a slightly different tone that the rest of that surface. I assume these triangles are the vertices of the figure's geometry. Any ideas on why that's happening and how to fix it?

WendyLuvsCatz

Reversed normals or non-planar polygons I would guess as iray like Octane triangulates everything, it's less forgiving of such things than 3Delight.

not sure if you can fix it in DAZ studio but you could put in a ticket for the items maybe for the PA or DAZ to fix it as such things should not pass QA as bad modelling. 

barbult

If you are rendering in Iray it might be Shadow Terminator issue. http://blog.irayrender.com/post/29042276644/shadow-acne-and-the-shadow-terminator

Sometimes subdividing the mesh helps reduce or eliminate it.

Deke

Thanks. How does one subdivide the mesh or increase the triangulation?  This does seem to be the issue. It's never happened before on these models and perhaps was triggered by some lighting or environment dome issues.

nonesuch00

If your UVs maps for your Base Character, G3F for example, don't match the texture set then you will get the odd triangles too. 

barbult

Deke said:

Thanks. How does one subdivide the mesh or increase the triangulation?  This does seem to be the issue. It's never happened before on these models and perhaps was triggered by some lighting or environment dome issues.

Select the object in the Scene pane. Then in the Scene pane menu select Edit>Geometry>Convert to SubD. In the Parameters pane adjust the render subd level to 1 or 2 or 3. Don't go too high, because it will require a lot of memory.