Chaos Corona Forum
General Category => Gallery => Work in Progress/Tests => Topic started by: hrisek on 2014-02-24, 16:41:57
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Here is my first corona render - basic setup, some tweaks in post pro label, and few layers in photoshop (simple postpro - vigneting, curves and brightness and contrast).
Hardware:
2 x xeon 5650 OC to 3.6 Ghz
Render time - 20 minutes.
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nice render , i like it :)
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20 minutes? I had better start looking into a dual xeon setup!
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Agentdark45 - here is something for You:
http://www.ebay.pl/itm/Dell-Precision-T7500-Workstation-2x-INTEL-Xeon-Hexa-Core-X5680-48GB-RAM-1TB-HDD-/261398665885?pt=DE_Technik_Computer_Peripherieger%C3%A4te_PC_Systeme&hash=item3cdc931a9d&_uhb=1 - price is 2000 Euro (if you are in Europe).
It's a monster machine. I hope you will find some funds to buy DUAL XEON machine:)
In next days i'll try to upload more wips from my old scenese.
I'll try to prepare every scene in siimlar resolution (circa about 2000x1400) because it's typical resolution for prints (for my clients).
It's enough for A3 print.
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the render is great
the light very good
and 20 minutes are unbelievable for this quality....
I can't create this quality with 4 Titans in 20 minutes...and some gpu based rederers
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Time to time i'm using Octane Renderer (actually in 1.33 beta version) - GTX 580 3 GB + GTX 560 TI 2 GB. But i'm using Octane with my old Cinema 4D R10 (2007 year) and i don't have live preview renders - i have to export scene every time i will change somethin in geometry. I love CORONA because it's 100% integrate into 3D Max. All my material from Vray are ready to convert in ONE CLICK. Only few materials needs some tweaks. In this scene i used BASIC setup in CORONA, and i remove ALL glass geometry from walls (i want to remove all possible obstacles for photos). And i put ONE simple CORONA light (rectangle) instead glass windows.
Less lights = less noise,
Less lights = less white spots
Less lights = more control over scene for me.
Tomorrow i'll try to make night shot (one light inside IKEA lamp) - my experience tell me now, that night shots are more difficult for ALL rendereres - photos from interior lights are to weak to travel to all dark corners, and render times are increasing 3-4 times.
I' will check this rules for Corona :)
Tomorrow i will prepare next interior - this time my old industrial loft. We will se what CORONA is able to do in 20 minutes with INDUSTRIAL interior:)
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here is short (10 minutes) render of my old unfinished SCI-FI scene. Processor - single i7-970 OC 3.8 GHZ. Some postpro in photoshop (colours, curves, color grading,glows and volumetric):
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And here is next little test - this time only super -sci-fi car from previous render (render time 10 minutes):
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These render times are great, I knew it would rock on a beast of a machine. ( I use to use a similar setup, life was great then ).
Btw I don't understand the link, but still a good price for those specs.
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Workstation from link above is a "machine of my dreams" :) In company where i'm employed i have 2 x Xeon 5650, and my dream is to have similar or better machine at home:)
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Little test of LOFT interior made by me for fun. Render time - 25 minutes (and still noisy).
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cool test
are you using PT + PT or PT + HD cache?
Corona uses the same progressive technics as the most used GPU based kernels.
With 20 minutes you can't have this quality using one single Intel processor, the same is valid using one GTX780 or Titan.
You need more processors or a renderfarm.
Neither Octane can produce noiseless renders except you have 4 gpus and the final image is 2X the size.
Direct lighting is the best kernel for a gpu. Enrico Cerica create amazing renders using Direct Light AO and few lights, no caustics, path tracings, metropolis, etcetera.
I hope that this guy will enter in this community because he will be very surprised about Corona.
If it have Phi compatibility....everything will change.
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I'm using PT+PT .I've tried PT+HD in SCI-FI car scene, but there was almost no difference in time renderings and in no differents in quality.
Do you have some experience when i should use PT+HD? is some especially situation (interior,exterior, product viz or other) when PT+HD is better or faster or less noisy?
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Here is another view of LOFT interior. In this case after 70 minutes of rendering (2000x2000) image is still very noisy - but i resized image 50% (1000x1000) and noise almost disappear:) Postpro (contrast, color grading, curves and some warm gradient added in photoshop):
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Which refraction mode do you use for your glass materials?
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About which scene are you asking (glass refraction) ?
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About which scene are you asking (glass refraction) ?
The one that is still noisy after 70 minutes ;)
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But there is no glass in windows (i removed all obsoletes for photos in this scenes).
The only one place in this scene where is glass is left side of render - there are some thin wall made from 4 box.
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Yep, even glass walls are enough to make renders extremely noisy if you have refraction mode set to solid. As any light passing through it is computed as caustics.
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yes - i know about it:) that's reason why in many cases i'm removing glass from windows to give a photos free way to get acces into interior:) PT engine always is calculating caustics if photos it going through refraction materials. But time to time (especially for close views) glass should be turned on to get reflections from interiors environment - is possible in this case to minimalize caustic calculations?
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And these GLASS WALLS - what should i change if refraction mode? which mode should i chooice?
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yes - i know about it:) that's reason why in many cases i'm removing glass from windows to give a photos free way to get acces into interior:) PT engine always is calculating caustics if photos it going through refraction materials. But time to time (especially for close views) glass should be turned on to get reflections from interiors environment - is possible in this case to minimalize caustic calculations?
Yes, that's the whole point. There is refraction mode called hybrid, which renders glass with transparent shadows instead of caustics. Therefore you can have those glass walls there without slowdown. If you use Daily builds, then it is replaced with caustics checkbox. Lastly, You can have glass in windows as well. Best way is to create just planes, one polygon, without thickness, then create another glass, and set refraction mode to twosided. That is the fastest glass without any refraction, ideal for windows. So:
Solid: Refraction with caustics
Hybrid: Refraction with transparent shadows and no caustics
Twosided. Just reflection and transparent shadows. Imitates very thin glass, such as light bulb glass ;)
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Daily builds has some other options than Alpha 5? hm...Daily builds are only for beta testers, right? Is some way to get daily builds if i'm not beta tester?
Actually i'm calculatign this view one more time but with HYBRID mode for these glass walls. I give thsi scene again 70 minutes - we will see a difference in noise.
Thank you for all informations:) it's very,very useful knowledge:)
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Daily builds has some other options than Alpha 5? hm...Daily builds are only for beta testers, right? Is some way to get daily builds if i'm not beta tester?
Actually i'm calculatign this view one more time but with HYBRID mode for these glass walls. I give thsi scene again 70 minutes - we will see a difference in noise.
Thank you for all informations:) it's very,very useful knowledge:)
Anyone who has some experience with Corona and a few nice pictures to show can apply for daily builds ;)
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Ooo, well - that's good info:) maybe in next few days my renders will be good enough to send question about betatesting:)
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Here is previous render (in full resolution) but with caustics disabled (hybrid mode). I noticed that some deep darked parts now are bright (probably more photos has been located in dark corners because glass is transparent for them) but noise is still at the same level. It's not bad for me because it's scene where source of light is far,far away from camera (windows holes are 20-22 meteres from camera) and really low amount of photos is traveling to camera. Probably after 150-200 minutes of rendering this picture will be clean at full resolution - but i prefer to render it to 2000x2000 in 70 minutes and then make a 50% resize :)
Thank you for info about how refraction mode works:)
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Hmm, i still think theres performance bleeding somewhere.... :)
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You are very experienced in Corona and i believe You:) i'll check ALL material in scene, maybe some shader has REFRACTION enabled with bad mode, or some bad geometry is somewhere...It's not commercial scene - i made it for fun only, but i remember that VRAY has ben killed with these interior - after 150 minutes of rendering (very high setting in vray and high subdivs multiplier) image was noissy and in few places vray has no chance to get good shadow on small details. In this case (Scene) CORONA has won:) Maybe more noise is here but no artifacts, no problem with IRRADIANCE settings.
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you used lights or mesh planes to illuminate the scene?
disable Bitmap Proxies / Paging in Max to get more speed
use PT HD cache, in the long run you get less noise.
regards
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i used only one light - CoronaSun. There is no other light (or meshes) as light source.
Now i'm rendering the same view with PT+HD (thanks for info) - maybe this mode will help.
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PT+HD is a great solution in my case:) the scene is less noisy :) and i recognised that in my scene there was 3 VRAY lights hidden which destroy lighting. Now i'm sure that on scene is only 1 light source - Corona SUN.
Final render is absolutely good for me. 65 min rendering - it's awesome and Vray is unable to do the same effect for this scene in the same time on my workstation.
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new tests in my WIP's gallery.
KEF BLADE 2 (i modelled it in 4 hours, sorry for 3d model quality but i have not more time to finish everything in 100%).
render time - 3 minutes per render.
I't only fast test for materials to check quality of model.
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next test renders. this time Avangarde Duo speakers which i made last week:
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New WIP for interior (for architectural challange).
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I don't like the stretched FOV and shaders could be better but it's still nice for a WIP.
btw, the thread's title should be HRIS' WIPs (optionally: CHRIS'S WIPs). I can understand that not everyone is perfect at English but come on... I'm really surprised with all these "Hi guy's!" or "My work's".
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But this topic is titled "HRIS WIP's"...
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OK now i see...i remove "'" and now "s" is on the end title.
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Next interior test - i made some tuning for parquet material and some little tweaks of bed frame material (linen material is changed too):
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Looks amazing :) good job!
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New test from corona ALPHA6 :) I made new armchair model and soem floor lamp, and i tested it in simple interior. postpro in PS (contrast,color balance, curves and sharpness).
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Looks good, but shouldn't that cage around lightbulb throw some shadow on walls?
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hm...interesting...i have only ONE corona light (sphere) inside bulb (radius 1.5 cm). Nothing fake, pure render...
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dual zeons seems to be the way to go or couple i7 5960
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hm...interesting...i have only ONE corona light (sphere) inside bulb (radius 1.5 cm). Nothing fake, pure render...
In that case, light bulb is likely too big, wires too thin and too close to light source and walls too far away for shadows to be clearly seen :]