# Antialiasing of Object ID render element **URL:** \ **Category:** Requests\ **Created:** [April 4, 2018, 11:27am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966 "2018-04-04T11:27:44Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![toniboni](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/toniboni/32/55841_2.png) [@toniboni](https://forums.chaos.com/u/toniboni)\ **Post date:** [April 4, 2018, 11:27am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/1 "2018-04-04T11:27:44Z")
Would be super helpful! ---
**Author:** ![Peter.Chaushev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/peter.chaushev/32/66949_2.png) [@Peter.Chaushev](https://forums.chaos.com/u/Peter.Chaushev)\ **Post date:** [April 10, 2018, 3:58pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/2 "2018-04-10T15:58:47Z")
MultiMatte render element was introduced with the latest update v3.60.02. It produces a filtered result and also supports transparency. > **[Chaos Docs](https://documentation.chaos.com/)** Kind regards, Peter ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [April 17, 2018, 7:45am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/3 "2018-04-17T07:45:50Z")
Hi Peter, I tried to explore the Multimatte workflow for jewelry design to get selection masks behind glass. Do you have some hints for the workflow? I enabled multmatte, but I see no multimatte channel at the frame buffer. Looks like I’m on the wrong way. Best- Micha ---
**Author:** ![toniboni](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/toniboni/32/55841_2.png) [@toniboni](https://forums.chaos.com/u/toniboni)\ **Post date:** [April 17, 2018, 8:47am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/4 "2018-04-17T08:47:47Z")
Hi Peter, Thanks for your quick reply. Good to hear about those news! Unfortunatley I have the same problem as Micha. I’ve enabled the element but I could not find the channel in the frame bufffer. Any suggestions? ---
**Author:** ![Peter.Chaushev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/peter.chaushev/32/66949_2.png) [@Peter.Chaushev](https://forums.chaos.com/u/Peter.Chaushev)\ **Post date:** [April 17, 2018, 10:15am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/5 "2018-04-17T10:15:46Z")
As mentioned in [https://docs.chaosgroup.com/display/…INO/MultiMatte](https://docs.chaosgroup.com/display/VRAYRHINO/MultiMatte), you would need to set Object IDs for all objects you wish to appear in the MM render channels. Numbers are assigned through the Properties’ V-Ray tab of each (or multiple selected) objects. Be sure to read the footnotes from the docs page: - Instances obtain the same object ID number of the copied object. - If objects with already assigned object IDs are grouped together and a new object ID is assigned to the group, the latter will override all separate IDs within the group. - If objects with already assigned object IDs become part of a block with a different object ID, the separate objects will preserve their initial object ID. Kind regards, Peter ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [April 17, 2018, 1:10pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/6 "2018-04-17T13:10:04Z")
Thank you, I got it now. Only through glass it doesn’t work. I tried to set the object ID of the glass object at 1 and 0, but the object behind at 3 wasn’t shown. Do you have an idea? ---
**Author:** ![Peter.Chaushev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/peter.chaushev/32/66949_2.png) [@Peter.Chaushev](https://forums.chaos.com/u/Peter.Chaushev)\ **Post date:** [April 17, 2018, 1:52pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/7 "2018-04-17T13:52:04Z")
I didn’t specify this properly in my first comment. By “transparency”, I meant that opacity is taken into account, not refraction. ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [April 17, 2018, 6:14pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/8 "2018-04-17T18:14:31Z")
OK, I understand. Thank you for your help. ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [January 7, 2021, 7:26am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/9 "2021-01-07T07:26:33Z")
I have a complex scene, a lot of object, but only a few materials. I need to adjust objects in postwork and I’m looking for a way to get mask like the Object ID, but fully antialiased. The Object ID would perfect match my need - no difficult setup, but AA is a must. Please help. At the help pages I found that the Object ID could be rendered with AA too. Is this option at VfR only missing? > **[V-Ray for 3ds Max](https://documentation.chaos.com/space/VMAX)** ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [January 7, 2021, 7:39am UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/10 "2021-01-07T07:39:31Z")
Could I modify the code of the exported ObjectID.vrmat to enable the color mode? ```auto Object_ID ``` ---
**Author:** ![konstantin\_chaos](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/konstantin_chaos/32/52929_2.png) [@konstantin\_chaos](https://forums.chaos.com/u/konstantin_chaos)\ **Post date:** [March 2, 2021, 1:43pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/11 "2021-03-02T13:43:48Z")
Hi **[Micha](https://forums.chaosgroup.com/member/84622-micha),** The option you’re referring to is a 3ds Max only feature. It does not work in V-Ray standalone and hence we can’t expose or enable it in Rhino. Konstantin ---
**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\ **Post date:** [March 2, 2021, 2:00pm UTC](https://forums.chaos.com/t/antialiasing-of-object-id-render-element/87966/12 "2021-03-02T14:00:56Z")
@konstantin_chaos It could be nice if there would be a simple way to get an anti aliased clown pass for objects like for materials. My clients are designers and they like simple mask outputs. A solution would be very appreciated.