http://forums.cgsociety.org CGTalk, the CGSociety's official forum for digital artists 120 en-us http://forums.cgsociety.org/showthread.php?t=1104817 Posted By: TheApostle
Post Time: 04-29-2013 at 03:06 PM
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Hi everyone,

I've been doing some look development lately, and noticed a problem in my shadow pass. On any rounded surface (i.e. spheres, cylinders, complex shapes), a harsh line gets rendered on the object where the light begins to fall off. This is causing issues with regard to compositing. Please see my attached examples, and download the scene file for yourself. I've tested this with both R13 and R14 and am seeing the problem in both versions. I've also seen this happen with both Area and Shadow Maps, but my example file is using Area shadows.

Any help you could give would be greatly appreciated.

Thank you so much!

Scene File: http://db.tt/cBH7NCzQ]]> Mon, 29 Apr 2013 10:06:59 +0000 http://forums.cgsociety.org/showthread.php?t=1104130 Posted By: jcorea83
Post Time: 04-23-2013 at 05:56 PM
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Hello I am new to the forums and Vray and I am rendering a realflow project, and have been running into some material problems. It seems that quite a bit of my render is lost in the final render but in the viewport seems fine. Also I have clear liquid vray mats, if that matters.]]> Tue, 23 Apr 2013 12:56:55 +0000 http://forums.cgsociety.org/showthread.php?t=1104007 Posted By: palosanto
Post Time: 04-23-2013 at 12:13 AM
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Hi,



Here is an interesting one ... I have a model of a hatch operated by hydraulic arms. I operate them by rotating one door and by means of symmetry and some aim and parent constraints the whole thing moves with the hydraulics.

However, when I render in the editor viewport it renders ok, but if I render to the picture viewer, the hydraulics have not moved and they stay in the initial position and therefor they protrude through the hatch doors.

Is there a setting I'm supposed to turn on or off? What's going on ...?

Thanks]]> Mon, 22 Apr 2013 19:13:14 +0000 http://forums.cgsociety.org/showthread.php?t=1103640 Posted By: fleabay
Post Time: 04-19-2013 at 10:55 PM
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I am using the 2 core 3Delight on a 4 core CPU but C4D R14/CineMan using 3Delights renderdl only shows 10% CPU usage (its like 5% C4D and 5% render and it is soooooo slow).

I can export RIB from C4D and directly use 3Delights renderdl and it renders at around 50% which is correct.

Any ideas?]]> Fri, 19 Apr 2013 17:55:29 +0000 http://forums.cgsociety.org/showthread.php?t=1102116 Posted By: huythuy
Post Time: 04-08-2013 at 11:30 PM
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Hi,

I did a very basic confetti scene and tried to render. It was rendered perfectly fine when render active view, but particles weren't rendered at all, though I set render from frame 0 and turn on visible to renderer for all objects . :(

Please help me. below is the project file

http://we.tl/KEvoBVWAaJ

many many thanks]]> Mon, 08 Apr 2013 18:30:04 +0000 http://forums.cgsociety.org/showthread.php?t=1095551 Posted By: ettusd
Post Time: 02-25-2013 at 02:05 PM
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Hi, I'm new to Vray and just as in regular cinema 4d studio where you can:

Exclude certain objects within light compositions, for instance, you can let light get through a roof, while the roof still being there.

I want to do the same with Vray. I have a Sky object with a VrayCompositing tag and i want to exclude the "roof" object so the light will go through. If i put the roof object in a regular composition tag, it won't work.

Any thoughts??
Thanks

Erik]]> Mon, 25 Feb 2013 09:05:03 +0000 http://forums.cgsociety.org/showthread.php?t=1091807 Posted By: charlie31
Post Time: 02-01-2013 at 07:24 PM
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Hi!

Physical sky will not work in vray, how to make clouds in vray.?
Have added Infinite Light with VrayLight, one can not add clouds in my scene. Only a clear sky. Where to find help for this.?
Thanks for all your help.!]]> Fri, 01 Feb 2013 14:24:44 +0000 http://forums.cgsociety.org/showthread.php?t=1090140 Posted By: hiromiito
Post Time: 01-23-2013 at 11:44 AM
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I can't see the sphere around a light showing its falloff in R14. When I open the same file in R12 it's visible. Same when I create a light in R14 it's not visible.
Any idea? Bug?
http://dl.dropbox.com/u/6431402/Scr....42.09%20PM.png
http://dl.dropbox.com/u/6431402/Scr....42.20%20PM.png]]> Wed, 23 Jan 2013 06:44:19 +0000 http://forums.cgsociety.org/showthread.php?t=1090066 Posted By: dredmix
Post Time: 01-22-2013 at 11:44 PM
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Hi

I'm using vray with cinema R13, and I set a small studio for testing.

But when I add the area lights the scene gets too bright and I can't see the objects and when I turn down the brightness and make a quick render the scene doesn't have enough light.

Here is some images to illustrate whats happening




And the settings


And I also have Linear workflow unchecked in the Project Settings.

I think I'm missing something but I don't know what.

Thanks for the help.]]> Tue, 22 Jan 2013 18:44:19 +0000 http://forums.cgsociety.org/showthread.php?t=1088067 Posted By: MankTank
Post Time: 01-10-2013 at 12:03 AM
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Heya! I got brought onto a project in C4D that's using the physical renderer, with DOF and motion blur. I have a max/vray background lately and have little experience with the physical renderer.

I'm finding that I have to increase my Sampling Subdivisions have to be very very high in order to get less grain in my renders... This obviously increases the render time significantly. What I've noticed though, is that the reflections contribution to the final image is the source of the grain. At lower, reasonable sampling rates, if I look at the individual passes, the diffuse, the GI, etc are all silky smooth in the motion blurred and DOF'd areas, and its only the reflection that's insanely grainy. This is with R13, I've tried disabling Blurrines of the reflections to see if that was contributing to messing with the sampling of the reflections, but same effect.

Does anyone have any insight or thoughts on this, and how I might be able to smooth out my reflection grain without just cranking the Sampling subdivs in the render settings? I wish there was more control with this renderer, I've been spoiled by VRay's sampler.

Thanks!]]> Wed, 09 Jan 2013 19:03:02 +0000 http://forums.cgsociety.org/showthread.php?t=1082232 Posted By: ArianTibbs
Post Time: 11-29-2012 at 03:55 AM
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I am working on creating a simple rendering solution for Cinema 4d / After Effects work. I've already decided on the mac mini for my solution, it's now just a question of which solution below to choose.

I am debating on the purchase of either two (2) dual core i5 2.5ghz late 2012 mac mini's or a sing quad core i7 2.6ghz. Outside of upgrading the ram on both machines to 16gb, I plan on keeping them stock.

What's the best bang for the buck here in terms of use as a rendering machine(s).
Thanks!]]> Wed, 28 Nov 2012 22:55:39 +0000 http://forums.cgsociety.org/showthread.php?t=1081319 Posted By: danielsian
Post Time: 11-22-2012 at 08:00 PM
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Hi all

Is it possible to exclude Gi from SSS irradiance cache calculation?

Thanks]]> Thu, 22 Nov 2012 15:00:26 +0000 http://forums.cgsociety.org/showthread.php?t=1080547 Posted By: Kwik
Post Time: 11-17-2012 at 07:51 PM
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So I just got my hands on Vray for Cinema 4D. I am eager to get it going since it has so many options above and beyond that of the render engines that come stock with Cinema 4D. Problem is I am having a difficult time getting it to achieve. First off it took 1 hour and a few mins to render a simple text scene. I used materials that I had made in C4D and did the conversion on them thru the Vray bridge. From what I can tell it seems to only make a rough idea of what it thinks the material should look like. So for instance I had made a simple black with about 15% reflection value. And a white floor and background. I used a illumination sphere with a value of 400% on the GI generation. I tagged the camera and did compositing on the light sphere. But after the hours wait there is only what appears to be a funny looking black and white image, some reason it looks nothing at all like the standard, or physical renderings I did to compare. Looking to the web now for any ideas on what I may have set incorrectly. Also I am wondering if someone can tell me how to reduce the amount of GI prepasses VRay makes, 4 passes seems excessive for something simple. I have tried a couple different presets but don't see any reductions. Any info really is helpful.Thanks! ^]]> Sat, 17 Nov 2012 14:51:09 +0000 http://forums.cgsociety.org/showthread.php?t=1078166 Posted By: alexpdennis
Post Time: 11-01-2012 at 10:27 PM
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how can this not be possible without exhaustive,sfsfsffffrustrating sub frame Mo-blur, im missing something right?]]> Thu, 01 Nov 2012 17:27:38 +0000 http://forums.cgsociety.org/showthread.php?t=1077950 Posted By: jerryshuchen
Post Time: 10-31-2012 at 03:43 PM
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Hi,

I want to make a very large range of grassland with trees. It's a still image, camera position can't move, and need to export the picture of 12000 pixel. I am using vray.

I have tried,
1. vrmesh of 1*1 grass field, but it is too heavy for my machine to fill the land.
2. Hair, I cut the land by 20 pieces to add it, my scene needs almost 350000 for each piece, and it's still too heavy.
3. vrayFur, the result isn't satisfy, it looks like an oil painting.
4. displacement mat, also looks not well.

The picture is in the attachment.
Dose anyone has a good idea to help me? thanks a lot !]]> Wed, 31 Oct 2012 10:43:38 +0000