Best way to reduce tris?

ibm03 · June 21, 2020, 5:19pm

Hi. I found a really good 3D model that fits EXACTLY what I need for my game. Here’s the problem. It’s 65,000 tris, and roblox only allows 10,000.

I’m not sure what to do. Any help is appreciated!

Orbitaire · June 21, 2020, 5:21pm

I think the best move for this would be to find some useless ones and delete them. Although this is not my strong point. Just the first thing that came to mind.

ibm03 · June 21, 2020, 5:22pm

You can’t just delete a tris - going through and doing that would take hours, and maybe reduce it by 1000 tris.

Orbitaire · June 21, 2020, 5:23pm

That is true, I have no other idea’s sorry.

g8mble · June 21, 2020, 5:25pm

Have you tried using the decimate modifier? It helps by reducing tris while trying its best to maintain its shape.

ibm03 · June 21, 2020, 5:26pm

I have. I only got it down to 63,000 tris though before it started to look bad.

F_d3d · June 21, 2020, 5:28pm

Personally, I would remodel it from planes. Its very tedious but it gets the job done much better than any modifiers.

ibm03 · June 21, 2020, 5:29pm

Problem is, I’m not a 3D modeler ha. Might need to hire somebody then…

F_d3d · June 21, 2020, 5:30pm

Goodluck then : ) 30charssssss

aquadrious · June 21, 2020, 5:32pm

you can separate parts of the car (wheels, chassis, windshield, etc) into groups and export each group as an individual fbx model, and then import them all keeping original scaling and position and it will reassemble itself for further use – although this will take some time since you’ll need to delete lots of tris or group together lots of tris and export those groups individually

EncodedLua · June 21, 2020, 5:33pm

I’m not experienced with modeling, but from what I know, I think your best course of action would be to try and manually remove tris and enable smoothing groups for similar faces. There might be plugins out there that can find redundant faces and merge them into one.

ibm03 · June 21, 2020, 5:34pm

Yeah, this is what I was thinking, but since all the tris are somewhat mashed together it might be difficult.

ibm03 · June 21, 2020, 5:35pm

Hm, maybe… I’ll go look it up

ibm03 · June 21, 2020, 5:35pm

This one might work, I’ll let you know if it does: Optiloops - Blender

brokenVectors · June 21, 2020, 5:37pm

Have you merging all vertices by distance by going into Mesh > Cleanup > Merge by Distance?

This will merge all vertices in the mesh that are really close together, and this can significantly reduce tris if there are any duplicate vertices.

ibm03 · June 21, 2020, 5:39pm

Yeah, it removed two vertices lol

ibm03 · June 21, 2020, 5:42pm

Plugin didn’t work, I suppose I’ll find a different model

SelectedArctic · June 21, 2020, 6:35pm

Hey! Not sure if you found out a solution but here’s one! If you do Ctrl-E then do Unsubdivide it should get rid of some tris/verts.

But also Note, it can make your mesh look weird depending on how it is.

Before

After

SelectedArctic · June 21, 2020, 6:41pm

You replied to mine by accident i think.

Maiaiiaa · June 21, 2020, 6:42pm

If you press shift+x you can melt faces together, I can’t promise it wont end up looking weird though.