VR Optimization and Performance Tips for Unity

[@corriedotdev]

great video covering some vr exclusive issues really.. i have a chapter in my phd thesis about optimization issues in VR and have to admit specular aliasing missed me and is a very important concept to introduce early on. For that i thank you for brining it to my immediate attention dude, its so important!

[@VRwithAndrew]

Happy to help, Corrie!

[@yesifea]

hey guys! dont forget the Occlusion Culling!! kzbin.info/www/bejne/gX6ViZiGg6iAqs0

[@GoldDeniel]

Oohhh wasn't I looking for this video? Yes I was! Back when I started my first project you were uploading in the order I was following... I've been looking for a video like this that's explained in the way you did for days! THANK YOU!!

[@VRwithAndrew]

Happy to help!

[@GeeCeeAte]

Amazing! Thank you!! I have been making textures for about 15 years and all of the other videos were basic and this is my first VR project. This is the PERFECT "what to look out for" in VR textures.

[@Franckie.G]

Your channel is very helpful , thank you !

[@VRwithAndrew]

Glad to hear that!

[@hjh10448]

It was what I really wanted. Thank you!

[@VRwithAndrew]

You're welcome!

[@Slivertoken142]

Andrew once again showing he's the nicest man.

[@VRwithAndrew]

The nicest man around.

[@user-lh3yq5lh9j]

You're right. What a nice man.

[@danydude6714]

This helped my get some more fps on my first VR Project, I'll continue learning about VR Optimization, thank u :))

[@sam-vids]

Super helpful and greatly appreciate the succinct way you convey the knowledge - your preparation of what you say is a huge time-saver for the viewer and greatly helps the comprehension - especially if watched at fast speeds. Thanks so much!

[@VRwithAndrew]

You're very welcome, Sam!

[@MrGeejayz]

Gees, this is really good to know, and so well presented. Thanx.

[@VRwithAndrew]

Glad it was helpful!

[@dridoupianiste]

Thank you very much for those explanations, moreover you have a chill voice and tone which just makes me happy to look around those information , thanks !

[@VRwithAndrew]

Much appreciated!

[@digitaljeepney4440]

the most valuable video in optimization so far. thank you.

[@VRwithAndrew]

Glad you think so!

[@christophercoutinho9281]

This is a superb video. Optimization is truly quite complex.

[@VRwithAndrew]

Much appreciated, Chris!

[@3dartninja]

This is so good thank you for the consise information, I find it hard to find accurate info on this stuff!

[@VRwithAndrew]

Always happy to help a fellow Art Ninja.

[@Sail_VR]

This is awesome!!! I've been looking for something like this for awhile!

[@VRwithAndrew]

Much appreciated!

[@quad-studio]

Incredibly clear and helpful! thanks!

[@VRwithAndrew]

Happy to help!

[@hasnainvohra9276]

Great video, thanks Andrew!

[@VRwithAndrew]

Happy to help, Hasnain!

[@andrewfullhd]

This video is soooo well made! I can see how much effort went into it! Now I am really motivated to make a VR-Project! Thanks and props!

[@VRwithAndrew]

Much appreciated!

[@letschat6]

Thank you for this!

[@VRwithAndrew]

You're quite welcome!

[@patmw]

Always providing value

[@VRwithAndrew]

You're very welcome!

[@aussieraver7182]

Awesome! Thanks for the help.

[@VRwithAndrew]

You're quite welcome!

[@mauriceroyalty2]

Whoa, this was super helpful

[@cigfer]

Very informative. Thanks!

[@VRwithAndrew]

Happy to help!

[@halbzwilling]

Thanks a ton 🙏

[@VRwithAndrew]

Most welcome!

[@yuhochih]

Thank you these tips are so useful

[@VRwithAndrew]

Happy to help!

[@Wal5797]

Very nice, very informative.

[@VRwithAndrew]

Much appreciated!

[@somni4516]

Thanks, amazing video!

[@VRwithAndrew]

Glad you liked it!

[@ellieelias6336]

I did learn some good stuff! Saved this video for later reference too!! I'm very new at this but I was wondering if LOD can work in unison with an imposter system? what I mean is, from a very far distance could you use an imposter, and then as the player gets closer replace it with the LOD system when they were close enough for it to matter. And if so, would this reduce or eliminate pop in? ... Or is this the type of thing where you would use imposter on some items but LOD on others? ...I'm also curious about "sub scenes" and "object occlusion" ... I'm not sure if all of these things can be used in unison or which options can eliminate Pop-ins (of course that's probably everyone's goal 😂) thank you again for this awesome video!!

[@VRwithAndrew]

Much appreciated! For your primary question, yes, you can use LODs and Imposters together. Once the imposter has been created, it would work similarly to standard meshes when working with the LOD component. This would let you render a lot more objects at further distances, so it has the potential to cut back on pop-in.

[@ellieelias6336]

@@VRwithAndrew thank you so much! I'm going to start trying this out!!

[@dron3k]

Lovely Great job man!

[@VRwithAndrew]

Thanks a lot!

[@NeroForte_]

my scene has no ojects only large landscape. but when i run it in quest 2 i only hear voice, and it is showing passthrough if i remove the headset proximity sensor i see the enviroment shows. i tried to lower resolution no luck

[@lucutes2936]

thx

[@kfckatsu5012]

The Forest needs to take some tips from this

[@r1pfake521]

Nice, btw what's the game in the background, is this a new Unity demo project or is it your project?

[@MrGeejayz]

I am wondering this too - those poor little red dudes are seriously outnumbered :(

[@VRwithAndrew]

It's a Unity demo project.

[@jeffg4686]

Great set of tips. @5:40 - was curious about the reason to leave gui textures uncompressed. Is that just because they're small, and don't need it as much so don't want to was CPU time, or some other reason? thanks

[@VRwithAndrew]

Since they're usually not large in size and are viewed from a close angle, you can usually have mipmaps disabled and have the textures uncompressed to avoid artifacts.

[@jeffg4686]

@@VRwithAndrew - thanks

[@t.holzenhauer7097]

really great composition of tips for optimization. and iam sitting here and thinking... where is the texture atlas and "only one big mesh" for large areas to reduce draw calls methods i got a few months ago on nearly every other page? i even bought and later never used meshbaker to optimize my proposal project for the quest but didnt succeed... had to run it on my computer instead. thanks for this video, especially the alpha method.

[@VRwithAndrew]

Happy to help!

[@pixeldustinteractive]

I need a tldr list from this video lol

[@uprealdigital]

Great content!

[@VRwithAndrew]

Much appreciated!

[@relivoaddad]

This was such a good video

[@VRwithAndrew]

Glad you liked it, Oli!

[@RichBoyRaz]

I just got Rick Rolled😢 It was an ad I was confused

[@make-a-game-com]

🤩 very nice. Subscribed

[@VRwithAndrew]

Much appreciated, Tom!

[@bovineox1111]

Parallax height mapping very pricey!

[@GoezTo11]

How about a video on how to get the Vive Trackers working in the UnityXR/OpenXR system? Thanks

[@VRwithAndrew]

I've seen a lot of people asking for this. I'll see what I can do!

[@lucutes2936]

What about lighting

[@deoczidGONI]

Quest2/Unity developer here: I'm still trying to find the right terms to use when trying to solve my problem: My trees in the scene are flickering/jumping like crazy, and the further away the object is, the more pronounced this effect. Up close there are no problems. Is it aliasing, missing mipmapping/lod, what is it called? The trees are static, nonmoving, but with a lot of alpha textures i guess, for realism. How do i combat this? I've tried 30 different websites/troubleshootings, setting renderers and other settings, and there is simply no change. Help appreciated!

[@VRwithAndrew]

If you have Lods setup that could be the issue, or it could be a weird culling issue. You way want to try setting up other objects at the same distance and see if they do the same thing. If they don't, try using a simple unlit shader for the trees to see if that gives you different results.

[@aneta6232]

Hi Andrew, thanks so much for another amazing tutorial! I am developing an Android app for Oculus Quest 2 and the textures appear quite jittery, especially on the sharp edges. Following your advice, I want to override the texture settings for individual objects. Unity recommends using RGB9e5 for OpenGL ES 3.0. Does this match the RGB9e5 Shared Exponent Float setting in Unity? Thanks a lot in advance!

[@VRwithAndrew]

Yeah, that's most likely the same thing!

[@77netwar]

occlusion culling?

[@VRwithAndrew]

Only so much time!

[@MrGeejayz]

I had noticed the lack of definition in my dungeon walls and floors that looked great on the regular display. I will go off and look into this in more detail BUT :) , did you find specific textures with available height maps or were you able to make those from the normal map?

[@VRwithAndrew]

They were technically separate assets. There are a lot of free bump generators at there that can convert Normal > Height.

[@simonbergqvist2213]

Great video, but it's very all over the place. The LoD stuff you started out with was so basic I almost closed out the video, but then you went on to cover some great more advanced topics and suddenly it piqued my interest. You should consider breaking down a video like this into multiple videos specificially targeting developers of different experience levels.

[@VRwithAndrew]

Oh, for sure! I would've liked to go into more detail for some of the topics. But, this gives a good enough first impression, if it's necessary I would like to do smaller follow-up videos in the future.

[@OmegaRayblade]

@@VRwithAndrew I agree, I'd love to see second half of the video in much more detail on how is it working and how/when those techniques should be used.