Material rounded corners not working

[Greg Law]

I'm having a problem with the rounded corner effect in the material editor.

I have never got it to work. I even tried a simple 1.0m box with a 20mm rounded corner.

Nothing happened when I rendered it. I have looked at a few tuts and followed them. Still I can't get it to work.

I'm using an up to date 2012 3dsmax design

 

Can someone help me with this?

I have to be missing something.

I did this tut using my laptop install. It has an Nvidia Geforce Optimus 540m graphics card.

8gig ram

I have a main setup using a quadro 4000 card. 24gig ram

[Justin Hunt]

20mm round corner is too big, 5mm or less is best. If you want 20mm then I'd suggest actually chamfering the edge.

Rounded corners is also units dependent

 

jhv

[Greg Law]

Thanks Justin.

Can you tell me what units you are talking about and which ones I should use. I thought this might be the issue.

[Justin Hunt]

Your display units

[Greg Law]

I'm using 1m display units

[Justin Hunt]

so put in 0.005 for a 5mm round corner

[Greg Law]

Thankyou for your help Justin,

I have found the problem. I had been changing the mapping to a bigger map size than real world. When I used the realworld it worked fine.

So it must relate to real world size only. Make sense seen as it is a rendering process.

[Justin Hunt]

Doesn't sound right to me, to two are not related to each other. What happens if you you do a material override with a simple grey mat A&D with round corners?

[Greg Law]

You are right this time it worked with a bigger mapping. Not sure what the problem was then, but it is working so I'm happy. :-)