Sudden Spot Render/Render problem
I have an environment that I've used a few times and have good results with render times at approx 30min. Also, in the past it allowed me to spot render with no problem.
I decided to use this environment again for a story set I'm working on and it suddenly is taking upwards of 5mins for a spot render to begin to work and the 30min full render results in an under-developed image. Is it possible that I did something screwy in some setting somewhere and am making things harder on myself? I have tried other environments and did both spot and full renders and they perform as expected. I have thought that maybe I should just load the scene fresh and redo my lighting and decorating choices all over again and see if whatever bug that is infecting this scene goes away. Obviously i'd like to avoid that if I can. Any info anyone has on this would be MOST apprecaited.
I am rendering in Iray
The picture quality is set to 2.0
Rendering Converged Ratio is at 95%
Additional Edit...
I tried reloading from scratch, re-deco and lighting. Then I saved my characters as seen subsets loaded them into the new environment and had the same issue. Now I have them loading into Daz, no environment, just characters and I'm reaching 6mins into my render and am still staring at Gray and White Checkers. I have now tried the characters individually and one of them took 10mins to render with nothing else in the scene. I did apply some age and face morphs to her head but aside from that, it's the same model as one of my other characters that took 4mins to render alone. I've never had this problem before.
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Comments
There are certainly things that can make an Iray render take longer (or indeed a 3Delight render), but it's hard to give general advice. Anything like reflections/very shiny surfaces that can bounce light back-and-forth without much loss of intensity will slow the process down as more bounces have to be calculated for each sample (shiny, light-coloured hair that is made up of layers of polygons is a likely cause) - you can test that in Optimisation in Render Settings by giving a finite Max Path Length (Genesis 3 figures need at least 6 for the eyes to work, I'm not sure about Genesis 8).
Yeah that makes sense. But what I'm running into is a little bit different. With nothing in the scene except this one character, it is taking a really long time! And the only thing abouther that I changed from the base character (which renders fine) is that I did some custom face shaping to her to make her not so gorgeous. It's really strange. I mean Halloween is coming up and I'm afraid I might have Daz'ed a real person into existence. Likethe long renders are because she's coming alive!!
Ya think? Like Weird Science?
That is odd, and would appear to rule out the path length (though chnaging the shape might have an effect there - especially on the sub-surface scattering calculations). One thing to check, by switching to one of the views with wireframe overlay, is that the mesh of the model hasn't folded back into itself - I don't know that that would slow a render, but it doesn't seem inconceivable.
I'll check that but I don't think I did anything too wonky. I was just using the morph sliders to change her facial appearance a little. She looks right when she renders, it just takes a long time. It's not a huge deal. I'll be getting a new GPU soon. At the moment I'm limping along with my GTX960. I'm sure the 1080 will alleviate the problem. Thanks for your thoughts on it though RIchard.