chodney

We're having trouble getting a large rendering out in Viz 2008 and Vray 1.5 Final

The overall image is 13000x10000, and we're using Irradiance Map 'add to current map' mode, then Light Cache from file.

I tried this with a smaller scale test (4000 pixels) and it worked fine. It could be a memory issue, but the weird thing is I was able to do a bigger image this way before.....only problem was I forgot to save the irradiance map so it calculated different maps per image, and the overall ended up stripey.

What happens now is it cranks through the blank frames no problem. As soon as it reaches a frame that has the building in it, it crashes and gives me an error of 'An unexpeted error has occurred'.

Any body have any ideas or maybe suggestions of workflow to get this large an image out?

BrianKitts

can I ask what in the world you could possibly be rendering for that requires an image 13,000 px wide?

that's just crazyness...... not to mention the fact that it sounds like you are tryign to animate in which case your resolution is way beyond HD.... so what's the point of rendering so big if there's no format that could deliver it that way.

the quick answer is you are probably running out of memory from your image size. Which would normally mean use of vray proxies and vrimg to control your memory usage. But in your case, I would first give this thread a reading...
http://www.cgarchitect.com/vb/21723-...er-stills.html

manta

IMAX resolution is only 10,000 x 7,000...why in the world would you be creating an animation that large...

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Horhe

....why so big?! Do you want to wrap the whole planet with the print out? ;]

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Im starting to suspect that the world is a rendering...

chodney

We figured that memory must be the issue. It actually cranks out the 200 strips pretty quickly, but then crashes when stictching together.
we're going very large billboard to be mounted at a construction site 5.5' in the air. (overall board is 10' x 6' tall roughly). The art director that is in charge and actually making the board has specified 100 dpi as a must.....thus the huge pixel count.
This is not an animation, but since it is multiple frames, i'd like to know if I'm using the correct Irradiance Map settings......everything came out stripey in the first test render.

Chad Warner

You want to render out your irradiance map first, using single frame at a much smaller resolution. Then when you send the strips, use the saved irradiance map for the big image.

Also, if the art director is specifying 100 dpi, you could always just render the image at 50 dpi and scale it up to 100 dpi in photoshop. No one will notice when the thing is 5' in the air. Plus it will save you a lot of headaches.

jucaro

you dont need to use 'add to current map' mode, since you are doing strip rendering. do it old school and use single frame mode.

You might also want to consider using qmc+lc mode at low resolution. the noise wont be that noticeable from afar.

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Dave Buchhofer

set your max render resolution to 1x1, uncheck show VFB, Enabling the VrayVFB, uncheck render to memory frame buffer, uncheck get image size from max, write directly to vrimg file, find vrimg2exr.exe in your chaosgroup tools area, and install the exr photoshop plugin

or if you have the 1.5 version, skip a step and rename the filename.vrimg to filename.exr in the text box in the render dialog before you start rendering

main plus: you wont see any banding from the strips

Strip reconstruction starts to fail generally around 5k resolution for me.

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veronica

Hello Dave, i need help, i can't do it works...
About the plugin: i've installed it but Photoshop (7)
don't open image "exr". Thanks a lot !

Danny21

Use LC+QMC, calculate first at half the size the LC and then load it from file and try this, I think the script is very useful:

http://www.scriptspot.com/3ds-max/super-render