animated water

[cristoforo]

I have a vibration problem with this animated water. I included two frames...putting one on top of the other you can see an area of the pool water go darker. Since it is a large area, it does not seem to be a problem with noise applied to the bump map. For the movement I have animated the phase control of the noise. Below I have posted the material settings and vray settings (vray 1.5 with max 7 on Windows XP 64). In addition, to avoid any flickering, I did the IRMAP calculation on one machine and also each frame is rendered on one machine. Any ideas.........have to get this animation out as soon as possible. Thanks!

[Da_elf]

simple enough. you cant have any animations other than the camera when using saved maps. thats probably why you get such a difference

[cristoforo]

Though, I do not have an object moving....it is just an effect of the map. For example....I also have a waterfall.....animated bitmap.....that does not have this flickering problem.

[instinct]

a waterbumpmap is as bad as moving geometry in this case i guess. Due to refraction it changes what part of the pool is seen where. If it changes to much there might be areas that dont have enough Irrmap info. That´s a wild guess tho.

Thorsten

[Da_elf]

that was my initial gues. reflections and refractions would show different areas if animated. some areas might have no samples

[studioDIM]

refraction caustics in the GI settings is the culprit, coupled with the big area of refractive surface.
Too much changes direction by the frame as pointed out before.

Lele

[cristoforo]

So, do I need to turn off the refractive caustics? Or, do I need to exclude the water from the GI calculations?

[cristoforo]

I tried both of the above, but it did not help the problem. Do not tell me that the only way is to render out each IRMAP for each frame?!?

[cristoforo]

The problem does not seem to be in the IRMAP calculation.....I rendered out a couple frames doing all calculations for each frame....but still had the same problem.

[Dynedain]

Try using QMC/Lightcache instead of IRRMap

[cristoforo]

Same thing happens with QMC.

[DaForce]

Can you post a sequence of frames to show of the problem more clearly than just 2 images.

[cristoforo]

How can I post the sequence?

[DaForce]

upload to rapidshare.de

[cristoforo]

Ok....here it is.........
http://rapidshare.com/files/463680/piscina.m1v