Mesh Optimizer For Unity

(using Unity 2022.3.22f1)

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This plugin enables a functionality similar to Blender's decimate feature within Unity.

This plugin supports both Mesh Filter and Skinned Mesh Renderer.

It can handle used on any mesh that can be imported into Unity (.fbx, .glTF, .dae (Collada), .obj, .GLB, .asset, etc.).

Additionally, even after optimization, BlendShapes, Bones, Bone Weights, and Sub Meshes will be preserved.

decimate functions are created by using UnityMeshSimplifier[1]

Installation

How to Install

Download the latest release file (Unitypackage) from here and import it to complete the setup.

File Tree Structure

tree have to looks like this

Assets
└─ MeshDecimater_Unity // MeshOptimizer_Unity directory name is `MeshDecimater_Unity`
   │
   ├─ UnityMeshSimplifier
   │
   ├─  .gitignore
   │  LICENSE
   │  VERSION
   │
   ├─Editor
   │      DecimaterMain.cs
   │      DecimaterMain.cs.meta
   │      MeshInfoDisplay.cs
   │      MeshInfoDisplay.cs.meta
   │      MeshPreviewer.cs
   │      MeshPreviewer.cs.meta
   │      MeshRevertManager.cs
   │      MeshRevertManager.cs.meta
   │      UpdateNotifier.cs
   │      UpdateNotifier.cs.meta
   │      WireframeDrawer.cs
   │      WireframeDrawer.cs.meta
   │
   ├─Runtime
   │      MeshDecimaterUtility.cs
   │      MeshDecimaterUtility.cs.meta
   │      MeshUtils.cs
   │      MeshUtils.cs.meta
   │
   └─Shader
         Wireframe.shader
         Wireframe.shader.meta

How to use

Select an object with a mesh from the Hierarchy or choose it from the ObjectField to use the plugin.

Similar to Blender, adjust the Decimate Level and press Apply Decimation to execute the decimation.

Clicking Revert will restore the original file.

Please note that Revert will not work after clicking on a different object (the original mesh will remain, so you can replace it to restore).

Update History

v0.0.1:

• Initial release.

v0.0.2:

• Fixed an issue where Components disappeared after Apply.

v0.0.3:

• Resolved issues related to BlendShapes.

• Fixed a problem where Skinned Mesh Renderer wasn't updating in Mesh Preview after Apply.

v0.0.4:

• Optimized decimation for Skinned Mesh Renderer.

v0.0.5:

• Fixed 'IndexOutOfRangeException' occurring on some models.

• Resolved issues with tangent duplication and calculation.

v0.0.6:

• Changed preview material from external reference to internal code generation.

v0.0.6.2:

• Fixed an issue where Material and Wireframe weren't loading in some cases.

• Improved mesh information after decimation.

• Enhanced display of mesh size reduction.

v0.0.7:

• Fixed FileNotFoundException Error.

v0.0.8:

・Resolved a problem where submesh material count became 1 after decimation.

・Changed display method

Modified wireframe shader.

Fixed an issue where preview material wasn't applied to submeshes.

・Fixed an issue where decimated objects disappeared when uploaded to VRC

Now the actually decimated object is saved.

v0.0.9:

Change name "Decimate" to "Optimizer"

Revert to Original Added.

Optimize(decimate) level is now save globally

v0.0.9.1:

Minor Bug fixes

v0.0.9.2:

Bug fix ;

Fix Mesh vanishing problem cause by (Clone) and _Decimated.

Fix SkinMeshRenderer issue in apply optimization

Fix Revert Button to undo

Change name of some GUI (Revert to Undo, Revert to Original to Reset To Original Mesh)

v0.0.9.3:

Add update notification function

Minor Bug fixes

work confirmed in

・Unity 2022.3.22f1

・Unity 2019.4.31f1

refiaa/MeshOptimizer_Unity

Mesh Optimizer For Unity

(using Unity 2022.3.22f1)

Installation

How to use

Update History