Antialiasing 3d objs with multi-threading

Aritz · Post by **Aritz** » Wed Jun 15, 2011 10:55 am

Rendering projects containing obj 3d objects in multi-thread computers with "Extra-smooth images" option active, creates frames randomly unantialiased. In version 8 the solution is to disable multi-threading, but in earlier versions the only solution is to disable image smoothing and render to double size, because the antialiasing in 3d objects is very poor compared to vector objects without image smoothing.

ponysmasher · Post by **ponysmasher** » Wed Jun 15, 2011 2:16 pm

This happens to images as well if they're big enough. Maybe it's some kind of memory issue?

Post by **Víctor Paredes** » Wed Jun 15, 2011 3:22 pm

Can you post a file to try? I can't reproduce the bug.

ponysmasher · Post by **ponysmasher** » Wed Jun 15, 2011 4:30 pm

It happens mostly in full HD resolution.
Here's one of my files: http://animestudioscripts.com/temp/13f.zip
Check out the benches after rendereing.

ponysmasher · Post by **ponysmasher** » Sun Jul 03, 2011 11:45 pm

Arrgh! I thought this wouldn't be a problem now that we could disable multicore but it turns it it's even worse in ASP8!

On this page there's an explanation and sample files: http://animestudioscripts.com/aliaserror/

Feel free to try and render the files and report back.

sbtamu · Post by **sbtamu** » Mon Jul 04, 2011 12:25 am

I just rendered the .obj file you supplied and did a quick 6 PNG frames at 1920x1080 and they all came out good.

Single core, Windows XP.

GCharb · Post by **GCharb** » Mon Jul 04, 2011 12:26 am

the v8 file rendered with jagged edges every two frames or so with multi-core on, while rendered properly with multi-core off.

ponysmasher · Post by **ponysmasher** » Mon Jul 04, 2011 8:28 am

Thanks for testing guys.

sbtamu wrote:I just rendered the .obj file you supplied and did a quick 6 PNG frames at 1920x1080 and they all came out good.

Single core, Windows XP.

Was this version 7 or 8?

ponysmasher · Post by **ponysmasher** » Mon Jul 04, 2011 11:32 am

Masks will also stop working if you have complex scenes or render at very high resolutions.

I've updated http://animestudioscripts.com/aliaserror/ with an example.

The resolution I used for the mask example might seem extreme, 9000x5063 but it happens in lower resolutions if the scene is complex.

Also I've had screenshots of a commercial I did printed on buses previously and that time I had to render as large as I could, so really high resolution render are needed at times.

Here I rendered a PNG sequence at 5000x2812:

sbtamu · Post by **sbtamu** » Mon Jul 04, 2011 1:12 pm

ponysmasher wrote:Thanks for testing guys.
sbtamu wrote:I just rendered the .obj file you supplied and did a quick 6 PNG frames at 1920x1080 and they all came out good.

Single core, Windows XP.
Was this version 7 or 8?

AS 7 Pro

ponysmasher · Post by **ponysmasher** » Mon Jul 04, 2011 1:16 pm

sbtamu wrote: AS 7 Pro

Yeah, AS 7 seems to handle it a bit better than AS 8 for some reason. Especially on single core.

ponysmasher · Post by **ponysmasher** » Mon Jul 04, 2011 5:56 pm

It seems that this is related to ram and the reason AS8 is worse than AS7 could be that AS8 apparently takes up more ram than AS7.
Also it isn't as bad if I restart my computer and don't run anything else. Then I only get every other frame ruined instead of all of them...

GCharb · Post by **GCharb** » Mon Jul 04, 2011 7:16 pm

As Isaid in another thread, might be time for a 64 bits version of ASP for systems with more then 3-4 gb or ram!

ponysmasher · Post by **ponysmasher** » Mon Jul 04, 2011 9:36 pm

I just installed ASP8 in Virtual PC, XP mode and it renders everything perfectly. With one core and 512MB ram...

So I guess it's not just a ram issue.