Quote from: MKE on August 10, 2011, 05:04:04 AM
Hi Martin and Oshyan,
Oshyan, thanks for telling Matt about this thread. I wonder if "ray trace everything" means the same as "ray detail multiplier = 1.0". When I look at the render time, it could be the case.
No as far as I know that does not mean the same.
Remember when your previous settings were detail 0.8 and RDM @ 0.25? That's 0.8 x 0.25 = 0.2 effective detail.
RTE basically tells TG2 to not use the rasterized renderer but the ray traced renderer. Consequently the above equation will be used.
So to have your raytraced terrain detail in line with the detail setting in the renderer you need to set RDM to 1, because then the effective detail rendered will be the same, according to that equation.
I think you can test this yourself with a crop render. Set detail to 1 and RDM to 0.1 and compare that with detail 1 RDM 1. The first should look horrible, the last a lot better.
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Yes, peace. But it doesn't say anything else. I just didn't upload the original problematic image with GI on and RDM=0.25, that's all. But that doesn't matter any more, it's clear now that it's not the GI which causes these problems and that with a higher RDM one can solve this problem.
Ah right, now I see, missed that info. Oh well, never mind
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Just before I wantet to leave office, I noticed that there is still a specular reflection in the shadow which looks unnatural. Therefore I increased the GI sample quality from 10 to 12 and now it's much better and not disturbing any more in the animation. There seems to be no problem any more with retreating and disappearing shadows, that's fine.
On the other hand, the render time gain of your solution melts with every parameter value I increase. It's now 17 minutes per frame compared to 19 minutes as it was before.
That's a pity
So basically you only increased RDM to 1.0 and set GISQ to 10-12? That's quite an increase in rendertime unfortunately.
I think Oshyan is right when he said that normally the complexity of a terrain covers things up and that the extreme simplicity in this situation painfully exposes the slightest potential problem which you normally really wouldn't encounter.
I don't know that doesn't help you, sorry.