Messages

4081

Work in Progress/Tests / Re: Siger various tests

« on: 2014-10-28, 16:08:23 »

Can highly suggest SigerShader Mat plugin :- )!

I got the impression from another topic that you weren't too fond of the Siger mats Juraj....guess I was wrong.

I used the mr series for a bit, but like you ended up using them as a basis for custom materials.

No you are correct, I preached the plugin :- ).

But I bought about 2-3 weeks ago the 3.001 for everyone and it seems like all the materials are rebuilt, with curves from Refractiveindex (!!), so it seems like whole new set. But I use Corona mostly so :- )/

4082

[Max] General Discussion / Re: Corona Alpha4 Benchmark scene

« on: 2014-10-28, 14:30:01 »

You're not breaking any warranty, the Asus overclock will probably only readjust BLCK strap or some other trick because the multiplier is locked. Even with such modest overclock (it depends on how lucky you are with the pieces you get), you're not really rising the overall TDP much, it's more than fine.
Yes it does make difference,  can be another 4-7perc. free performance. (obviously the percentage depend on relative increase, for i7 at 3.5 to 3.7 is nothing, but at 2.6 to 2.8 it's more noticeable. )

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[Max] General Discussion / Re: Corona Alpha4 Benchmark scene

« on: 2014-10-28, 12:11:49 »

No, that's One-core maximum turbo-frequency, the all-core I think is 2.8, that's a big difference. But the Asus board gives you option to try 5-10perc. of overclock on them, so maybe, you could potentially get up to 3.0 Ghz during rendering.

4084

Gallery / Re: Forest & Ocean

« on: 2014-10-28, 12:06:50 »

You're right about that, and maybe if I was more talented in photoshop I could add the depth in some ways (I tried sort of, but maybe in wrong way). It was impossible find backplate to please the client, and the reason why it isn't covered more with fog/haze, which
would add depth, is that the backplate had to be very dominant, to make it stand out. It does kill the realism, but on other the point of image was the environment itself.

4085

[Max] General Discussion / Re: Corona Alpha4 Benchmark scene

« on: 2014-10-28, 03:37:41 »

Oh :- D Sorry, don't keep much track of where and what I say :- ). Congrats to workstation ! Impressive machine.

Well, nice to hear, I thought NH-D15 would hit some ceiling around 4.3-4.4Ghz with the temperatures. Seeing as the average with custom water loop is now 4.6Ghz (average for past 20 units sold by overclockers UK),
I think your temperatures quite nice. I will begin building one probably next week, just debating whether to go for full custom loop or stay with Noctua classic.

I presume you don't plan to use 4-way SLI (not even physically possible I guess with Noctua), so what was the reason for choosing WS compared to simply spending such money (or less) on Deluxe or ROG ? {but it is the nicest out of them aesthetically, that has to be given :- ) beautiful board

I see you also went with quite low Xeons, what's the all-core turbo frequency on those ?

4086

Work in Progress/Tests / Re: Siger various tests

« on: 2014-10-27, 23:13:58 »

Can highly suggest SigerShader Mat plugin :- )!

I use it only for custom materials I create, but if the Vray shaders (which are quite nice!) were converted to Corona I would gladly use as well.

Siger by jurajtalcik, on Flickr

4087

Work in Progress/Tests / Re: Juraj's WIPS/Theory/Questions //Update with few PDFs from my recent presentation

« on: 2014-10-27, 16:49:29 »

Ok, if you want some lulz, just search other forums

As for the albedo: do this: Find one material where you are 99% sure you know its true albedo. It can be for example a list of paper (nontranslucent). Place it side by side to real world materials and observe from multiple angles - is the paper whiter? Then its albedo must higher. So you can establish upper/lower bounds on real world albedos.

Yep, wanted to build controlled environment 1:1 where I can do measured photography to render comparison, but all this takes so much time and I need to do work instead :- )

4088

Work in Progress/Tests / Re: Juraj's WIPS/Theory/Questions //Update with few PDFs from my recent presentation

« on: 2014-10-27, 15:59:31 »

So ? That lets me zoom. And it shows albedo value, quite lower than what I would expect.

CG artists have a long tradition of setting albedo unreasonably high because they do not understand what albedo is. As a result, rendertimes are too high and renders look washed out (so people usually end up adding ambient occlusion or decreasing light bounces :D).

I recently made again the mistake of reading up on corona on some other renderers' forums. It is always the same story - if a renderer offers an AO engine, then Corona results look "washed out and unrealistic, with no shadows in corners, probably blurred and faked as much as possible to make it render this fast"

What :- D ? Would love to read that.

Sure, the days of White=255 are gone, but, that we have the graph literally showing measured White paint to have Albedo as low as 0.35 Linear value at  0 degree incidence. On other hand, some researches like Sebastien Lagarde say almost opposite, that most people author physically based materials to have too low Albedo. I am of course, currently quite in middle, but I am always debating with myself where I should move, higher and lower. And from that point, be consistent among all the materials.

Measured materials are at the moment the closest answer to this question. But is that really so ? I went over 20 materials so far, from chrome to paint, fabrics...and it's always waaaaay darker than what I would image. I'll try to setup some real-world 3D scenario and see.

4089

Work in Progress/Tests / Re: Juraj's WIPS/Theory/Questions //Update with few PDFs from my recent presentation

« on: 2014-10-27, 15:34:21 »

Rigth Click on albedo graph and drag!.

So ? That lets me zoom. And it shows albedo value, quite lower than what I would expect.

4090

Work in Progress/Tests / Re: Juraj's WIPS/Theory/Questions //Update with few PDFs from my recent presentation

« on: 2014-10-27, 14:44:13 »

Heh I was more interested in reading MERL data, as they are fitted from measured source, than how various BRDFs get close. At least I don't know how else to view them :- ).

What I liked about Sergey's SGD BRDF was that it could interpret MERL data and translate directly into usable variables (Diffuse, Specular,etc..) and one could interpolate to other materials based on those 100.

4091

[Max] General Discussion / Re: Question regarding Processors

« on: 2014-10-26, 14:53:04 »

Embree doesn't give more than 30perc advantage at most, AMD simply has weak architecture and had for many years now, the days of Athlon64 are gone sadly.

Opterons are just weak budget cpus, for some tasks (they were popular for mining in past 2 years but even there are better solutions now).

4092

[Max] I need help! / Re: CPU 100%

« on: 2014-10-26, 14:48:25 »

Your CPU is either throttling or underclocking due to energy settings. It's 2600k with 3,4Ghz, but you're rendering with 1,6 GHz for some strange reason.

Doesn't look to be associated with Corona to me anyhow, but by your computer settings. What's you energy settings (Look at control center), anything special in Uefi(bios) ?

4093

[Max] I need help! / Re: setting render corona engine

« on: 2014-10-26, 02:38:40 »

Well, I use both Vray3 and Corona (80perc. of time Corona only though). In both, on average i7 (I have farm though, so just for relevance) my pictures do take 10+ hours to render :- ).

With Vray you can optimalize a lot, cut paths to 4-6 bounces, Heavily biased cache (-3/-2 or -3/-1 Irradiance, thus solving GI only in 1/4 or 1/8 of final image resolution both in interpolated quality),
something that's not currently possible within Corona.

But once you compare similar visual quality (BF/LC) you will see a quite decent speedup, one that's even more noticeable in heavy GI scenes lit with IBL, where Corona is quite much faster.

But if you compare default Corona, to whatever potato setup you had, it will be slow I guess. This is the problem with people claiming Corona to be super fast, it's not. For some it's fast, for some it's slow...

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[Max] General Discussion / Re: Corona Alpha4 Benchmark scene

« on: 2014-10-26, 02:31:16 »

Corona Renderer Alpha 4 benchmark scene
 Living room 100 passes
Intel(R) Core(TM) i7-5960X CPU @ 3.00GHz
Time: 0:2:17, Rays/s: 9,209,435

oc'd to 4,3 ghz

Krimson, what's your cooler ? NH-D15/CL/Custom loop ? Can you keep it 4,3+ GHz stable 24/7 rendering ? Thank you

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Work in Progress/Tests / Re: Juraj's WIPS/Theory/Questions //Update with few PDFs from my recent presentation

« on: 2014-10-26, 02:27:53 »

I spent some time delving deeper into some stuff and played a bit with Disney's BRDF explorer (and reading fitted MERL data from csail.mit.edi )

So, what is it telling me ? That White (I presume glossy) paint has Albedo as low as <0.4 in linear value ? Seems to me but I am dumb simpleton so perhaps you guys can take a look.

Now if Sergey could finish that SGD plug for Vray for 3dsMax for example I could look directly..but oh well.