camera shifting

[SzLaszlo]

Hi ,

I want start the 'Render Challenge Heading Your Way!' , http://www.ronenbekerman.com/render-cha ... g-your-way .

The finish render must be 3636 x 2657 or 2657 x 3636 , these screen is too big (render memory > 5.5 Gb.)

I try division 4 sections ,but I can't make it





How can I make it exactly ( 4 x 1818x1328.5 (1329) ) ??

Thanks ,
László

[suvakas]

How much RAM do you have?

[Jambert]

It's possible with shift lens, don't know which exporter you use.

To me, you should use a lower supersample factor, >5,5Go for 2657 x 3636 sounds high

[SzLaszlo]

suvakas : 8 Gb.

Jambert : blendigo exporter 1.1.14 , indigo1.1.18 64bit.
, 4x supersamples

[Zom-B]

4x supersamples

My friend this is insane... not Sparta!

each 2x step of supersampling raises the RAM usage for holding the IGI by 4!!!
IGI size with 4x SuperSampling is arround 16 times biger than without SS...
If you use Light Layers you reached a final overkill since IGI gains +100% size with each light Layer.
Internal with your res of 2657 x 3636, Indigo works with 10628 x 14544


A little bit of math:

Your 2657 x 3636 IGI has a basic size of 128MB.
Using a total of 4 light Layers the IGI wil be around 512MB.
Now having 4x Super sampling and you end up with a 8192MB IGI file...

So RAM usage will be 8GB ONLY for having the IGI in RAM, without counting a single triangle!!!


To reduce RAM
- render in commandline mode
- force BIH tree generation, by reducing the Triangle threshold in the exporter
- Use light layers for setting up & adjusting lights during lower res testing, for final full res rendering use as few as possible!
- try reducing res of your used HDR EnvMaps since Indigo needs a lot of RAM analyzing them
- reduce SuperSampling to 2, more is in most cases a absolute overkill... SuperSampling is on of the best AA methods possible. Try to understand and work with the different Splat and SS algorithms Gaussian and Mitchel Netravali.

[suvakas]

8 GB is more than enough for that resolution.
What ZomB said - set your super sample factor to 1 or 2 at most.

[SzLaszlo]

Sorry ,sorry , and thanks the answer , I try it
Quick render with 2 supersamples only 1.2 Gb.

[Pibuz]

Thank you guys for the explainations! Always glad to know a little something about RAM usage