Vray flythrough with exposure changes and a sunset...

[Roodogg]

Hi Everyone. Apologies if this has already been resolved on the forum but I couldn't find it...

 

I am rendering my first flythrough animation where the sun sets. The camera flys round a building, pauses, the sun moves across the sky, the camera then enters an atrium, the sun sets, artificial lights illuminate.

 

My usual scene is set up with vray sky (instanced between environment, vray environment / reflect / refract)

Vray sun,

Vray physical camera.

Primary irradiance map (Animation - prepass / rendering)

Secondary light cache (Flythrough mode)

 

Each frame renders perfectly until the sun sets. When rendering in sequence, the light level remains the same during the sun set (The sun drops though it remains daylight). If I render each frame individually, the light diminishes correctly.

 

Obviously the problem is the light cache, it works if I use single frame mode but then the animation flickers. Using brute force as the secondary GI works but it takes ages and I'm under time constraints!!!

 

Is there something I'm missing, I've tried every setting within light cache plus I know photon map is useless.

 

Many thanks for any responses.

 

Any help would be much appreciated

 

3DS MAX 2010 64bit

Vray 1.5 RC4

Intel Quad Q6600 2.4Ghz

8GB RAM

[Michael81]

Hi there

 

I have the exact same question as above. Dose anyone know the answear to this? Maybe you figured it out your self. Would very much like to solve this.

 

Michael

[rafa rubio]

heyy!... i have the same problem....

anyway to solve it??

 

im under time contraints toooo!... (always)

 

10x

 

rafa

[Craig Ramsay]

It's because you're animating your lights, animating using that method will not work. Check out this tutorial, it's a guide on how to animate object or lights in an animation with GI and no flickering - http://www.spot3d.com/vray/help/150SP1/tutorials_anim2.htm

[rafa rubio]

It's because you're animating your lights, animating using that method will not work. Check out this tutorial, it's a guide on how to animate object or lights in an animation with GI and no flickering - http://www.spot3d.com/vray/help/150SP1/tutorials_anim2.htm

 

working on it..... 10x...

i`ll let you know in a while... jejeje...

[rafa rubio]

It's because you're animating your lights, animating using that method will not work. Check out this tutorial, it's a guide on how to animate object or lights in an animation with GI and no flickering - http://www.spot3d.com/vray/help/150SP1/tutorials_anim2.htm

 

Craig:

 

Thanks a lot... now evrything is clear.....!! im rendering entire sunset animation actualy (will show you soon)....

 

and i have another question jejeje...

now we have that setting about camera path... but... what happend if i precacluate a simply fly through (no movement just camera) with that setting on? is it necesary? or i just have to do it in past way?

 

thanks...!

 

rafa

[Craig Ramsay]

If there's no moving objects or lights you can just use your original setup, it will be mich faster.