grid of polygon edges showing in render

sriesch

In this test scene, the edges between the polygons of my object are showing as black lines in the render. Why and/or how can I fix or avoid this? It only seems to be a problem for this one scene. I also tried to manually recreate the scene and was able to do so without problems, although obviously there is some difference between the two scenes I'm not seeing. All that's in the scene is the camera, the imported ground object, and a distant light.
(I can just recreate the scene and delete the original and start working on it again, but still want to know what's going on in case it's something that will reappear in the future.)

Three Wishes

Try setting your shading rate to about 0.5 and see if things start looking better?

sriesch

In the problem scene, lowering the shading rate to 0.5 wasn't quite enough, but it does clear up when I lower it to 0.1 . However, in the recreated scene without the problem, a shading rate of 1 works just fine and lowering it isn't necessary. Why wouldn't the shading rate work the same way in two different files that are otherwise (seemingly) identical?

Jaderail

If the Item is using a Shader on the Surfaces I have seen this happen. It has happened to me for some Shaders and Lighting Combos. It will also happen with just SOME lighting. I also up the Pixel X and Y along with shading rate and that seems to help the issue.

sriesch

I tried reimporting the terrain using the material that was created when exporting from Bryce to see what it looked like before applying the shader, but it still has the problem (although obviously it's still using A shader, just the default one).
Hmmm. I tried deleting the distant light and adding a new one and the issue went away, so it does appear to be the light that's triggering it rather than the material. I realized I had missed a few parameter settings in the distant light in my manually created scene, but no change after matching them. However if I copy and paste the old distant light to the new one the issue is back, so it seems to be tied to the specific settings of the light somehow. Is it possible there are some "hidden" parameter values, or are there other settings tied to the light outside of the "All" parameter list?

Jaderail

I see this Most of the time when Lights are set to DEEP Shadow Maps. Not always.

sriesch

Here are the settings for the distant light.

Jaderail

I'm doing a render right now that does just this very thing. In Draft Quality the Mesh grid shows in the Render but when I set my render settings to Average or High Quality it renders properly. I use Adamr001's Render setting for DAZ Studio found in his free items thread. The link in in his Sig line.

Szark

To me your shadow bias is way too low too. try 0.10

sriesch

Thanks for bearing with me while I try to track this down everybody, I appreciate it.

@Szark, sorry I wasn't quite clear with my last post. the distant light settings (including Shadow Bias) posted are actually the same between the light that causes the issue and the light that doesn't cause the issue. In fact it really didn't make sense for me to post that screenshot. :-) I'm trying to determine why I can get it to work in the one case but not in the other since all settings look identical. I'm sure I'm overlooking a setting somewhere.

@Jaderail, what/where is the setting that can be changed between Draft/Average/High? Is that something assigned to the light somewhere, or a render setting, or something else?

Jaderail

They are a set of Render settings, and Default render sizes that can be applied with icons, they are found here...
http://www.daz3d.com/forums/discussion/16085/

EDIT: I'm starting to think the First light you used had a Load glitch, and saved that way. The working light loaded properly.