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Messages - Captain Obvious

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General Discussion / Re: Question regarding Processors
« on: 2014-11-02, 11:15:49 »
10x slower makes it sound like there's some kind of performance bug. I was expecting the top-end AMDs to be more like... I dunno, maybe half the performance of the top-end Intels. Not 1/10th.

General Discussion / Re: Question regarding Processors
« on: 2014-11-01, 20:37:13 »
When first implemented, embree made waaay bigger difference in Corona than 30% - it is líke some crazy unicorn pony magic!

I also tested embree on an AMD rig, and it was not significantly slower. I suspect Corona is slower there because I only develop and optimize on Intel. Maybe sometimes in the future I will try to optimize also on AMD.

yes keymaster, that would be nice if corona is optimized for AMD
i believe that many of corona users are AMD users too. always wait for this development
The cold hard truth is that AMD are really quite far behind on the CPU performance curve at the moment. There isn't so much that can be done to optimize that away. Ondra's time is much better spent fixing bugs and improving functionality in Corona, rather than putzing around with low-level optimizations that are really the compiler's job. If you care that much about performance, just buy an Intel-based render slave. *shrug*

AMD were ahead back in the Pentium 4 days, but now they're behind. It happens. They might get ahead again, or someone else might get ahead; who knows. But right now, Intel are the CPU performance leaders. By a wide margin.

The only way I can see that working is if the fluid simulator writes out a vertex velocity map.

Portals are used to manually guide the render engine into focusing its attention into a particular area, to reduce noise. It shouldn't affect the look or anything. It's just that if you're rendering an interior with small windows, it's going to be hard for the engine to find the window with random sampling. By putting a portal in it to guide it, it should clean things up better.

One thing to note though is that the "camera correction" modifier will zoom out when you shift the lens, and produces basically the same results as if you simply edited the tilt of the image in Photoshop or whatever. It might not matter, but it's good to be aware of it.

Also, if you have V-Ray, Corona supports the lens shift settings in the V-Ray Physical Camera.

Thanks. Is there a way u have it display while rendering but when u save it does not save with it?
You can turn it off in the settings after rendering has stopped, and it will go away.

I always just turn off though. If I want statistics, I'll look in the statistics tab.

General Discussion / Re: Corona render speed
« on: 2014-10-03, 01:23:10 »
If you consider the price for an upgrade to be a lot of money then no, it's not worth it. If you've got a six-core @ 3.45 GHz right now, the 8-core Haswell-E isn't going to be that much faster. It might cut your 6 minutes into 4-5 minutes. Is that really worth two grand?

Resolved bugs / Re: Very long GI
« on: 2014-09-29, 18:07:44 »
Haha, wow, 4000 rays per second! Something is broken. Try turning half the scene off and try again. Then turn half of the remaining half off, and try again. Keep doing that until you figure out what's causing the problem.

General Discussion / Re: Corona render speed
« on: 2014-09-28, 15:21:25 »
I still use modo a lot. I don't really do that much arch viz any more to be honest. I mostly write code.

I need help / Re: No GI render element ?
« on: 2014-09-26, 19:05:02 »
Ooops :-)

News / Re: Interactive rendering early prototype
« on: 2014-09-26, 01:05:11 »
Keyshot embree? It was iRay, right? Is it's real time feedback based on Embree so it does not uses the GPU?

Keyshot isn't iray. It's some in-house engine. Bunkspeed is iray.

I need help / Re: No GI render element ?
« on: 2014-09-25, 14:37:42 »
This is really weird. I have *no* idea what could be wrong in After Effects. My first thought was that it was treating everything as sRGB but "linearizing" with gamma 2.2, which causes a discprepancy in dark colours, but when I adjusted for that in Nuke, it made for a much much bigger difference. It's really just the foliage that's different between your images, and any kind of incorrect colour math produces a massive difference everywhere.

Frankly, just buy Nuke or Fusion. Or dig out an old Mac and look for a copy of Shake. Almost anything is better than After Effects for comping.

I need help / Re: No GI render element ?
« on: 2014-09-25, 14:31:47 »
239 megabytes? Crikey.

Looks like it's AdobeMath(tm) at work. Looks fine in Nuke, aside from a small fringing. Not sure why there would be fringing.

The attached images show the result from adding together all the render elements. The "difference" one shows the difference between the result and the main output, while the other one shows the comped and the main output spliced together in a checkerboard pattern. You can't really see which is which.

I need help / Re: No GI render element ?
« on: 2014-09-25, 11:33:31 »
Could you post the OpenEXR file(s)? I can check in Nuke to see if it's a problem in AE or with the render elements.

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