Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: rambambulli on 2015-07-06, 14:27:34

Title: Not using all CPU power when zooming into an object
Post by: rambambulli on 2015-07-06, 14:27:34

Hi All,

I have a question. My CPU doesn't uses 100% all the time when I hit render. The closer I zoom into an object the less CPU corona uses. Is this a normal behaviour?
If I detach the diffuse bitmap of the material I am looking at it runs on a 100% again. Attach the material and it uses 15-20% of my CPU and sometimes not even all of the cores. Has this something to do with bitmap filtering or blurring? Why does this influence the CPU usage so much?

I tested it on 2 computer. Both the same problem. I can't recall experiencing this before.
I use 3ds max 2015 and Corona 1.00.02

Please help, thanks a lot.

Title: Re: Not using all CPU power when zooming into an object
Post by: Ondra on 2015-07-06, 17:30:57

try the latest corona build, and use coronabitmap instead of 3ds max bitmap (mtl converter can switch it)

Title: Re: Not using all CPU power when zooming into an object
Post by: maru on 2015-07-06, 17:44:51

Ondra this is already logged in our support. He tried different things but no solution yet. I let Ludvik know too.

Title: Re: Not using all CPU power when zooming into an object
Post by: rambambulli on 2015-07-06, 19:17:01

Hi Ondra and Maru,

I have been helped by the support desk. Very fast response!!! Briliant.
So far no solution. I'm trying different machines now. So far 2-1. 2 have the problem 1 worked fine.
I'll test with the Coronabitmap as you suggested.

I will figure it out  with the support team further. Again the support is great. (my telecom provider could learn a lot from you guys :)).

Thanks!

Title: Re: Not using all CPU power when zooming into an object
Post by: rambambulli on 2015-07-06, 19:39:01

Solved!

Support replied:

1. Open asset tracker using Shift+T

2. In top menu bar, under under "Bitmap Performance and Memory" menu, uncheck "Enable bitmap paging" option (if it's enabled)

3. Save your scene

4.  Close 3ds max and run it again (Don't skip this step!!)

5. Open the scene again

6. Render

Still figuring out how it got enabled.

Again thanks for the very fast response.

Title: Re: Not using all CPU power when zooming into an object
Post by: Ondra on 2015-07-06, 19:50:04

yup, that is what I thought ;)

Title: Re: Not using all CPU power when zooming into an object
Post by: Ludvik Koutny on 2015-07-06, 19:59:20

There are two issues in 3ds Max:

1, Bitmap paging enable/disable status is saved with file, so if you disable it, someone can still give you file where it is enabled.

2, If you disable it, it will still remain paged in memory until you save your scene, close it, and reopen it back. It won't take effect immediately.

It's not enabled by default but sometimes it can get enabled for strange reasons or when someone gives you this "infected" scene ;)

So it's very useful to keep it in mind :)