Can somebody please help me solve an issue that is driving me absolutely crazy?
I have been using 3DS MAX / Vray now, for almost 2 years (using it everyday) and I have hit my first major brick wall.
Over the 2 years I have managed to resolve all my issues with a little bit of research, but this time I have well and truly hit the wall.
Basically I am trying to render out a 90 second flythrough animation. To make it easier to render, I have divided the 90 second sequence up into 10 parts (10 cameras).
I began with the easiest one - A simple flythrough animation down a corridor that lasts all of 3 seconds! (90 frames)
After following a lot of training, a ton of research and various peoples’ input I discovered the best way to render out this sequence is to run a light cache first, followed by an irradiance map and then a final render.
(I should note the frame size is set for a 600 x 800 window).
Today it took 4 hrs to render the light cache, 6hrs to render the irradiance map and 5 hrs to get to frame 3 of 90!!! so i hit the cancel button!
At this speed, we’d be looking at 4 days to render 3 seconds and approx 3-4months to render out this small sequence!
I have played around and tested every single possible setting i can think of, but it seems to only get worse.
Everyone I have spoke to said that this is obviously not right and that perhaps there is a setting on that’s causing it to take so long. (i just cant find it)
I could go through the many options I have set up, but I think its best if someone can take a look at the file for me? If you fancy a challenge? Let me know and I’ll upload it.
I should mention my spec is :
Windows 7 Home Premium
AMD Athlon II X4 640 Processor 3.00GHz
32GB Ram
64bit machine
Please find attached a screen shot of all my Vray settings. Any questions please feel free to ask.
These settings are set up post Light Cache and Irradiance map rendering.
Thanks for your post. I did have the subdivisions at 30 but the sampling was quite pixelated. Going up to 50 smoothed out the noise. Same with the Ambient Occlusion.
As for the GI, I have environment Vray Sun and Sky in my scene, so I think it would affect the scene if I were to remove it.
It’s probably going to be something really small that’s causing it, like I’ve accidentally ticked the ‘Take As Long As You Want To Render’ button!
Many Thanks for your input. I’ll try removing the GI and see what happens…
in the meantime, if you have any other ideas please feel free to put them in the mix.
Apply gray shader to everything and then render. Where does the render stops, is it particular material or area? Its hart do suggest something without seeing the scene/issues.
Cant render it since of license but from looking at ur scene I see one issue…
U are using Max lights which are not even set up to use vray shadows. Change them to Vray Lights and then try rendering. I think this could cause some long render times. Also as far as I can tell, only doors are moving. So maybe you can bake use static GI approach and exclude doors from affecting GI too much. This way you should render it a lot faster. Also the number of lights. Maybe you could limit them…
U can also bake the lightmap and so on to objects and then render that…
Can you upload one of the rendered frames, as without textures it is difficult to see what areas need to be checked for issues. But I agree with DADAL, the Photometric lights are gonna slow you down.
Any reason why you are not using VrayIES
I’ve not seen the scene, but if only a small portion is moving in the animation i’d render the entire thing with a saved map/static GI, and then do a spherefade pass on the moving objects with your animated GI. 1/50 AA is obscenely high, as is a noise threshold of .0005. Drop it to 1/8 & .008
Using animation blending with IR maps is VERY slow, i’ve found it offers very little speed benefit over re-working the scene to render in brute force/LC - a few times it’s actually worked out slower. I’ve never managed to use it in production.
So do the whole thing static and use this - http://www.vray.us/vray\_tutorials/vray\_animation\_moving\_objects.shtml
Okay, so I took a quick look at the scene. Settings are pretty crazy in here. It was just simpler to remove all the lights and just start over. This is a SUPER QUICK hack at lighting and the setting are definitely NOT final quality. This file renders in about 1 min 30 sec or so.
I didn’t have any of the maps / hdris you were using, so it’s a little hard to say exactly where the problems were coming from. Your glass material was messed up for some reason. I rebuilt that material and made sure to check affect shadows.
Again, I didn’t spend more than 15 minutes looking over the file and I am sure there are other things I didn’t catch. But this should get you started on the right path.
and approx 3-4months to render out this small sequence!
regards, jonm4y
