Net render creates strips across still image ??

[Jez(UK)]

Hi there,

 

I'm getting back to 3d visualization work after many years absence and am trying some test renders (learning vRay, re-learning Network Rendering etc).

 

The attached image is obviously wrong, can someone please tell me why these lines are appearing across this render ??

 

I'm rendering in a network of 2 computers, so they are sharing the strips - but from what I've discovered this happens when choosing "Split Scan Lines" which *has* to be chosen when network rendering a single image using more than one computer.

 

I'm using 3DS Max Design 2009.

 

Thanks,

 

Jez

[mattclinch]

you need to set an overlap in your strips setup to allow for an area of..well....overlap.

[Jez(UK)]

How do you 'anticipate' the overlap amount ??

 

Seems like I wouldn't have known how much overlap to set until I'd measured in pixels the strip marks and even then I needed to allow extra than it's actual thickness (i.e. thin black line was 1 pixel, it took an overlap of 3 pixels to make it disappear).

 

Secondly, to network render that image was actually slower than my i7 doing the entire image by itself, I'd say that my i7 is about 80% faster than my other slave. So, I'm confused !! A net render taking longer than a single machine render ??

[Kzandra]

Using Backburner, 3ds Max renders more than just the exact height of the strips. It adds 12 black pixels to the top and 12 black pixels to the bottom of each strip (except the first and last strips) so that it can later match and correctly join (or stitch) them together.

Edited July 11, 2009 by Kzandra
spelling

[amer abidi]

I'm rendering in a network of 2 computers, so they are sharing the strips - but from what I've discovered this happens when choosing "Split Scan Lines" which *has* to be chosen when network rendering a single image using more than one computer.

 

Jez

 

Why not use vray's distributed render instead?

You'll find it in the vray rendering dialogue box.