Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: FrostKiwi on 2015-01-18, 18:44:52
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Any reason why you would check these (on by default), I see no difference on multiple tests, including animation.
Why not have free 70k ray/s / faster render?
(http://www.saires.de/server/why.png)
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Any reason you would mess with debug settings?
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Any reason you would mess with debug settings?
Free powa :D
No, just curious to know, when the precision is needed.
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render interior lit by enviro light with high-poly one-sided geometry curtains in windows and you will see ;
it helps with this kind of small light leaks. 70k rays/s will save you few minutes... but if you ever run into this problem, you will lose hours. So it is on as an insurance ;)
I would put it in more prominent tab and announce its meaning, but then the internet would be full of "100% universal settings" guides telling people to turn it off as a first thing in new scene. And then there would be bug reports from clue-less people about light leaks ;)
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render interior lit by enviro light with high-poly one-sided geometry curtains in windows and you will see ;
Ye, found light leak in translucent materials, this is fixed by the precise flag.
I'm still curious though what "high quality" means. If it's no trouble I'd love to know...
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it enables the "precise" flag in embree. That causes embree to use slower ray-triangle intersection algorithm, that is watertight (does not let any rays through on boundaries).
I think you mentioned you study IT, so you probably know about problems with float imprecision. The fastest ray-triangle intersection method (moller-trumbore) suffers from some catastrophic cancellations in some cases - it calculates the volume of tetrahedrons created from ray origin, intersection point, and 2 points of the triangle. This volume is zero on edges, because all 4 points lie in single plane. This zero will easily ruin your day, because you need to invert it.
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it calculates the volume of tetrahedrons created from ray origin, intersection point, and 2 points of the triangle. This volume is zero on edges, because all 4 points lie in single plane. This zero will easily ruin your day, because you need to invert it.
thx^^
ye, I study computer-science