Vred 2017 Vr interaction Performance and Interact Issues

[Anonymous]

Hello All,

As you can see guys SLI section is gray, it seems to be doesnt active, and im getting some performance issues in my scene. How can i be sure both gtx 980 cards active in vr mode with HTC vive ?

my computer spec:

intel i7-5820K 3.30GHz

16 gb ram

win 7

nvidia gtx 980 (2x)

Vred 2017 Pro

Here my scene statistics:

do i need to reduce polycount in my model (or do i need to reduce my materials size) ? I really need  your advice guys..

And last question, i`m trying to interact with objects inside the scene with this awesome guys script (https://knowledge.autodesk.com/support/vred-products/learn-explore/caas/simplecontent/content/adding...) i would like to change objects switch material by hitting them with vive controller greenlaser ! how do i do that ?

Thank you and Best Regards

[michael_nikelsky · Accepted solution]

It is difficult to tell but the triangle count should not be the problem. What immediately catches my eye are the number of matrix changes which nearly match the number of nodes drawn. You should try to flush the transformations or at least reduce it.

The SLI-Text is just a UI Bug, it is always grey in the 2017 version. I am not sure when we added it but you should get a message "Multicast SLI enabled" or something when you activate a stereo mode or the vive. 

A quick test would be to enable a Interlaced Stereo Mode. First disable VSync by calling setVSyncInterval(0), activate the statistic and then move the scene around paying attention to the fps. Then type setUseMulticastSLI(false) to disable multicast SLI. If the framerate drops to about 50% or so, MulticastSLI works and you can reenable it with setUseMulticastSLI(true). If the framerate stays about the same SLI does not work correctly.

As for interaction you will probably need to create a variant set and call it by python when you hit a specific object.

Kind regards

Michael

[Anonymous]

Hello again,

Thank you very much for your answer its worked, i tried your advise test as you told. When i execute the command `setVSyncInterval(0)` in terminal, fps get doubled 🙂 when i gave (1) framerate drop %50, after that when i tried `setUseMulticastSLI(false)` and `setUseMulticastSLI(true)` framerate dropped around %50 too !

Note: All this commands has to be execute when Head Set (steamvr) is active otherwise fps totally different in workspace and you can not see the results of commands !

About changing material (color or texture) of object via vive controller im gonna create new topic about that.

Best Regards