Animation with GI that doesn't flicker

[vlado]

So far I got some result with the Medium preset for the irradiance map, and some detail enhancement; this is with a grey material on everything though, didn't have time to try the full one:

http://www.spot3d.com/vray/images/st...ap/test_de.mov

The detail enhancement gets rid of the flickering samples around the sliding door.

Best regards,
Vlado

[duke2]

So far I got some result with the Medium preset for the irradiance map, and some detail enhancement; this is with a grey material on everything though, didn't have time to try the full one:

http://www.spot3d.com/vray/images/st...ap/test_de.mov

The detail enhancement gets rid of the flickering samples around the sliding door.

Best regards,
Vlado

I'm not totally clear on what DE does and doesn't do, but if Natty didn't want to use DE, could he use it in the calculation phase to get more samples in "detail areas" but turn it off for the actual render so he doesn't get that DE look?

[RErender]

I'm not totally clear on what DE does and doesn't do, but if Natty didn't want to use DE, could he use it in the calculation phase to get more samples in "detail areas" but turn it off for the actual render so he doesn't get that DE look?

Quite the opposite, you'd end up with messed up GI in the corners.

[Morbid Angel]

I'm not totally clear on what DE does and doesn't do, but if Natty didn't want to use DE, could he use it in the calculation phase to get more samples in "detail areas" but turn it off for the actual render so he doesn't get that DE look?

What detail enhancement does is simply use an occlusion like method to blend between irradience map samples and brute force (uninterpolated) gi samples. So, with specified radius in areas of more dense (detailed mesh) DE will create noticebly more gi detailed shadows in contrast to irradience map.
However because DE is brute force dependant, it can't be stored during prepass or interplation phase and it will always have to be calculated during frame render.

[giraffe]

In this test, the irmap is computer in animation mode (prepass/rendering) with interpolation of 4 frames with the setting of -3/-1 and 20/80
light cache of 600 with filtering of 40 in screen space, with size of 0.005. This time LC is computed per frame. In this test there is little to no flickering.

I didnt understand "interpolation of 4 frames" for prepass rendering.
which parameter is that?

By the way, I cannot see the images.

I am trying to learn to animate only for 2 days. and my first attempt was to animate sun.
I come across this thread when I made search.

When I animate the sun- (all rest is static so only light is changing), I get flickers but cannot be sure because of GI or AA.

what is the best method to render such animation?

I am sorry if it is a stupid question but is there a source that I can study speed of a camera, when to use what speed? Because I tried to make a 3second animation of sun travelling from 10am to 18:00 and it looks so fast. after 15hours of render...
so it is so hard to test I just couldnot determine how many seconds for sun to travel from 10:am to 18:00 would look nice.

[rajdarge]

SP3 and GI animaion

So for the noobs here to animation:
when SP3 comes out,
could someone upload a screenshot or a preset or something that would allow me to reproduce a decent scene:
1. scene with many animated objects
2. scene with animated camera

indoor and outdoor

I've been trying to follow the thread of the different settings, but its really doing my head in.

[mohment]

Anyone able to get flicker free results with the animation prepass/rendering IRMAP method with the current build, or is a newer build the only option? I have a scene with many moving objects and displacement grass, and I have tried every possible combination of options and nothing seems to get rid of the flicker.

[Morbid Angel]

Anyone able to get flicker free results with the animation prepass/rendering IRMAP method with the current build, or is a newer build the only option? I have a scene with many moving objects and displacement grass, and I have tried every possible combination of options and nothing seems to get rid of the flicker.

you will need to get a most recent build of vray, you can write to chaos for that.

[mohment]

I emailed vray@chaosgroup.com, is that the correct way to get the latest build?

[Morbid Angel]

that should be right.

[mohment]

Have you had any issues with the latest build? I've got a 20 computer render farm and I don't want to install a new version unless its pretty stable. Is it stable enough for production use?

[Morbid Angel]

usually they are pretty stable. I would ask chaos guys about it though. We always use latest builds and generally are pretty happy with the stability.

[rajdarge]

if I read this right, all the settings discussed are for the 2ND pass of the render right?
What are the settings for the first pass?

[duke2]

I'm using the latest build here in production as well and I have't had any problems with it's stability.

[tricky]

Do you think (anyone?) that we will ever get to a point where we can use Vray's GI to render a flicker-free animation with moving objects in a simple manner?

There are so many issues discussed in this thread (and others) that I feel I should just use fake GI techniques (dome of lights anyone???) where I have moving lifts etc. When we are fortunate - or unfortunate - enough to be commissioned to produce an animation, we just don't have the time to tinker and trial all these suggested methods for getting shots to work. Budgets and timescales are just too small for us. It needs to be simple. It needs to work. And it needs to be easily switchable between settings for sequences with animated objects and sequences where everything - bar the camera - is static, yet the resultant renders look essentially the same so that when comping the sequences together later on, they look like they were created using the same lighting rig/cg company!

Is this too much to ask?

(sorry to appear so full on)