Open Brush, Open Blocks, Icosa Gallery•8mo ago

Hi. What is it you want to know?

Aandybak Hi. What is it you want to know?

Hyper•4/22/25, 2:30 PM

I want to know just the simplest way to display some glbs from tiltbrush with all their shaders. My friends idea is just to have QR codes people will scan and it’ll open up a site to show a model tied to the specific QR.
After I posted here I tried to use the threejs shader extensions in the project I had already but I struggled with the brushes textures (I’m not much of a web dev). I saw there was the gallery and maybe I could just upload the models there but I saw it’s closed. So I noticed I could start over with the icosia viewer used in the gallery. Largely got it tweaked for my needs save the navigation, which I’m struggling with.

andybakOP•4/22/25, 2:30 PM

we hope to open signups very soon

andybakOP•4/22/25, 2:30 PM

i could probably upload for you in the meantime?

Hyper•4/22/25, 2:30 PM

Namely the pivot/ rotation is hard to move the camera to actual see the model.

andybakOP•4/22/25, 2:30 PM

how many sketches are there?

HHyper Namely the pivot/ rotation is hard to move the camera to actual see the model.

andybakOP•4/22/25, 2:31 PM

it should use the camera info exported via the glb.

andybakOP•4/22/25, 2:31 PM

(assuming the glb came directly from open brush)

Hyper•4/22/25, 2:32 PM

No these came from tiltbrush. They’re old. You recommend I load them in open brush to re export?

andybakOP•4/22/25, 2:34 PM

open brush is tilt brush essentially

andybakOP•4/22/25, 2:34 PM

i just can't be bothered to type both names!

andybakOP•4/22/25, 2:34 PM

(also - who still uses tilt brush!)

Hyper•4/22/25, 2:35 PM

I know! But that’s what she gave me lol

andybakOP•4/22/25, 2:36 PM

if hosting on icosa gallery is acceptable to you both, then DM me the files

andybakOP•4/22/25, 2:37 PM

otherwise - you can look at the javascript that calls the viewer on a page like this: https://icosa.gallery/view/5rf3YuZfJAW

IcosaGoogle

Pond | Icosa Gallery

icosa

andybakOP•4/22/25, 2:37 PM

and copy what that does

andybakOP•4/22/25, 2:37 PM

(we will make this easier soon - i promise. just need some kind javascript volunteers to tidy things up)

Hyper•4/22/25, 2:39 PM

I’ll ask her how she feels about hosting in the gallery. They’re something like 6 or 8 models. At least it’s a backup plan if I can’t get it working.

andybakOP•4/22/25, 2:40 PM

You can also host on Icosa as "unlisted" and embed the viewer via an iframe

andybakOP•4/22/25, 2:40 PM

so it looks like it's on your site

Hyper•4/22/25, 2:41 PM

Hmm that’s good to know

Hyper•4/29/25, 9:31 PM

@andybak I did manage to work it out. However I did find that when trying to use a transparent background some of the shaders don't seem to like it. I tried tweaking my configuration maybe I was doing something wrong but idk. Maybe it's an issue with the shaders or a limitation of THREE.js ?

2025-04-29_15.27.45_localhost_4177eb516290.png

2025-04-29_15.28.27_localhost_258de79bf0f8.png

HHyper <@159102974071668737> I did manage to work it out. However I did find that when ...

andybakOP•4/30/25, 8:07 AM

I've kinda lost track of the whole pipeline you've got going here. Can you spell out to me in detail what's going on in this images?

andybakOP•4/30/25, 8:07 AM

"However I did find that when trying to use a transparent background" - I'm not clear on what exactly you mean here.

Aandybak "However I did find that when trying to use a transparent background" - I'm not ...

mikesky•4/30/25, 8:25 AM

Same issue we had with Passthrough blend basically, i saw it too when trying to make an AR viewer for Icosa a couple years ago

andybakOP•4/30/25, 8:25 AM

but what's the image on the right?

andybakOP•4/30/25, 8:47 AM

Pretty sure I've viewed most brushes in AR mode on Icosa on the Quest.

andybakOP•4/30/25, 8:48 AM

@Hyper - remember we're mostly on UK time. If you want a realtime conversation then bear that in mind.

Mmikesky Same issue we had with Passthrough blend basically, i saw it too when trying to ...

andybakOP•5/1/25, 1:49 PM

Yep - you were right. When I try the viewer with Open Brush stuff in AR mode I get the same. Our shaders don't work properly with AR passthrough.

@Hyper - they seem to work fine with other elements in the scene. It's just AR passthrough that doesn't work. Can you explain what you mean by " transparent background"? Transparent in relation to what? Are you overlaying a three.js on top of other elements in the page? Or are you overlaying various parts of a three.js scene?

Aandybak Yep - you were right. When I try the viewer with Open Brush stuff in AR mode I g...

Hyper•5/1/25, 2:19 PM

Yes overlaying the three.js on top of other elements in the page, specifically a video feed from a camera. Setting the background to null in the scene initialization. Half the shaders don’t seem to handle the transparency properly in that situation.

HHyper Yes overlaying the three.js on top of other elements in the page, specifically a...

andybakOP•5/1/25, 2:20 PM

I hadn't spotted this because usually Open Brush scenes have a skybox that hides passthrough. We'll take a look but it might be a couple of weeks away.

Hyper•5/1/25, 2:26 PM

That’s alright. I worked around it by having my friend change some of her models. Then it turned out the deadline has been extended a month so I thought I’d ask in the off chance the issue might be resolved and we could use her initial designs.

HHyper That’s alright. I worked around it by having my friend change some of her models...

andybakOP•5/1/25, 2:27 PM

It's something I want to fix pretty soon because it affects viewing in AR. But i'm away next week so I won't be able to take a look until the week after.

andybakOP•5/1/25, 2:28 PM

If you know anyone who's good with WebGL - we could use some help in that area!

Hyper•5/1/25, 2:29 PM

Unfortunately I don’t. And I’m certainly no shader wizard or I would have tried to solve the issue myself

Hyper•5/1/25, 2:33 PM

My expertise is in Unity, so C# and modeling, game design etc. Have only dabbled in JavaScript a bit.

Have done a handful of things with Unity webGL but not with webGL directly

andybakOP•5/1/25, 2:58 PM

You could probably do a Unity WebGL build of the sketch using the Open Brush Unity SDK

andybakOP•5/1/25, 2:58 PM

it would be a lot heavier than the native GLTF version however.

PAT•6/3/25, 12:20 PM

Hi guys, how do I import files into open brush?

PPAT Hi guys, how do I import files into open brush?

andybakOP•6/3/25, 12:36 PM

You're in the Icosa Gallery channel. Do you mean "how do i import from Icosa Galley into Open Brush" or something else?

PAT•6/3/25, 12:37 PM

Hello. Yes

andybakOP•6/3/25, 12:38 PM

We haven't released the full integration yet. Should be ready in the next few days.

andybakOP•6/3/25, 12:38 PM

Until then you can just manually download and copy into your Open Brush / Media Library folder?

Aandybak We haven't released the full integration yet. Should be ready in the next few da...

PAT•6/3/25, 12:48 PM

Does open blocks have fonts?

PAT•6/3/25, 12:48 PM

Or is there anyway I could do on a windows pc and import into Open blocks library

andybakOP•6/3/25, 12:50 PM

sorry - those sound like 2 unrelated questions. i think i'm misunderstanding you?

andybakOP•6/3/25, 12:50 PM

what are you trying to do?

PAT•6/3/25, 12:51 PM

I have a project where I needed to create a model in VR. But instead of doing it in VR, is there anyway I could create 3D models on my desktop and import into open blocks vr.

PPAT I have a project where I needed to create a model in VR. But instead of doing it...

andybakOP•6/3/25, 1:55 PM

We should probably move this discussion to #open-blocks-chat . Can you DM me an example model so I can try something? And are you using blocks via PCVR or standalone?

Mustangman351•7/8/25, 6:04 PM

Will you have a way to export Open Brush paintings into Icosa Gallery like Google Poly had?

MMustangman351 Will you have a way to export Open Brush paintings into Icosa Gallery like Googl...

andybakOP•7/8/25, 6:29 PM

Yes. Very soon. I'm stomping the last few bugs as we speak.