How to add many MRenderItem's in a MRenderItemList?

[EarthHobbit]

Hi,
I have an MPxGeometryOverride and need to create many MRenderItems. I append them render item by renter item in the MRenderItemList during a loop.
However beyond 3 or 4000 it becomes quite slow and reaching the 10'000 takes ages.
Is there a way to bulk add all render items in one go, or is there another way to do ?
Putting all my geometry in a single renderitem is not really a solution.
Thanks !

[cheng_xi_li · Accepted solution]

Hi,

I am afraid there is no way to bulk add renderitems. If they are same renderItem with different transforms, it would be better to use MPxSubsceneOverride which supports instancing.

Yours,

Li

[EarthHobbit]

Ok, thanks, will look into MPxSubsceneOverride !

[EarthHobbit]

Hi Li,

I played with MPxSubsceneOverride and performance is indeed much better.

However 1 issue I have: How can I force update (instead of changing time) ?

Thanks !

[cheng_xi_li]

Hi,

You'll need to trigger an update (e.g. MPlug::getValue).

Yours,

Li

[EarthHobbit]

Oh thanks, it works 🙂 !!