SpriteSharp - Sprite Mesh Optimizer

@ZimM: SpriteSharp currently isn't playing nice with the Unity Package Manager. When loading a project for the first time with packages being included, your texture pre-processor is trying to modify and re-import assets that are in packages. These assets are read-only and can't be modified so Unity enters an infinite loop and continues trying to reload the asset in a loop. We fixed this on one of our own texture pre-processors by adding a check that the path contained "Assets" at the start.

Also, the sprite atlas hack changes the userData field but it would be nice if it didn't stomp what was already in there as we use it for something else.

 

TBH I would say it's PM not playing nice with everything else. PM causes huge lag entering playmode and does a bunch of stuff it really shouldn't be doing atm.

 

Yeah I don't disagree.

 

SpriteSharp v2.5.0
Unity 2019.1.3f1

'Use Default Override Settings' is not working when add new sprite asset.
It only worked with 'reimport'.

The problem is SpriteImportManager.ProcessSingleSprite

TextureImporter textureImporter = texture.GetTextureImporter();

textureImporter is always null.

So, I added next code to SpriteImportPostProcessorImpl.OnPostprocessSprites
and using as parameter.

TextureImporter textureImporter = (TextureImporter) postprocessor.assetImporter;

 

SpriteSharp 2.5.1.0 not working with Unity 2019.3.0b3

 

Bumping up TimNedvyga, SpriteSharp not working with Unity 2019.3.0b3

Code (CSharp):

1.  
2. System.NullReferenceException: Object reference not set to an instance of an object
3.   at LostPolygon.SpriteSharp.Utility.BuildPlatformsUtility..cctor () [0x001cb] in <48b0d871d4244170b9e4ba7f4e597991>:0
4. 0x00007FF6B0B135EC (Unity) StackWalker::GetCurrentCallstack
5. 0x00007FF6B0B16A51 (Unity) StackWalker::ShowCallstack
6. 0x00007FF6AF28D555 (Unity) GetStacktrace
7. 0x00007FF6B179F390 (Unity) DebugStringToFile
8. 0x00007FF6B0B7A825 (Unity) DebugLogHandler_CUSTOM_Internal_Log
9. 0x000001A4ACD3817B (Mono JIT Code) (wrapper managed-to-native) UnityEngine.DebugLogHandler:Internal_Log (UnityEngine.LogType,UnityEngine.LogOption,string,UnityEngine.Object)
10. 0x000001A4ACD37D8B (Mono JIT Code) UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
11. 0x000001A4ACD2908E (Mono JIT Code) UnityEngine.Logger:Log (UnityEngine.LogType,object)
12. 0x000001A4ACD2865A (Mono JIT Code) UnityEngine.Debug:LogError (object)
13. 0x000001A4ACCFC1A3 (Mono JIT Code) UnityEditor.EditorAssemblies:processInitializeOnLoadAttributes (System.Type[])
14. 0x000001A4C27ED3EB (Mono JIT Code) (wrapper runtime-invoke) <Module>:runtime_invoke_void_object (object,intptr,intptr,intptr)
15. 0x00007FF85C23C8B0 (mono-2.0-bdwgc) [mini-runtime.c:2809] mono_jit_runtime_invoke
16. 0x00007FF85C1C1DA2 (mono-2.0-bdwgc) [object.c:2921] do_runtime_invoke
17. 0x00007FF85C1CAD9F (mono-2.0-bdwgc) [object.c:2968] mono_runtime_invoke
18. 0x00007FF6B0A9556E (Unity) scripting_method_invoke
19. 0x00007FF6B0A8F24D (Unity) ScriptingInvocation::Invoke
20. 0x00007FF6B0A89225 (Unity) ScriptingInvocation::Invoke<void>
21. 0x00007FF6ADEFF9F5 (Unity) Scripting::UnityEditor::EditorAssembliesProxy::processInitializeOnLoadAttributes
22. 0x00007FF6B0A62883 (Unity) MonoManager::SetupLoadedEditorAssemblies
23. 0x00007FF6B0A5A664 (Unity) MonoManager::EndReloadAssembly
24. 0x00007FF6B0A60DB7 (Unity) MonoManager::ReloadAssembly
25. 0x00007FF6AEF18823 (Unity) ReloadAllUsedAssemblies
26. 0x00007FF6AEEF6B90 (Unity) EditorSceneManager::RestoreSceneBackups
27. 0x00007FF6AE96DC54 (Unity) PlayerLoopController::EnterPlayMode
28. 0x00007FF6AE97FC94 (Unity) PlayerLoopController::SetIsPlaying
29. 0x00007FF6AE982B1F (Unity) Application::TickTimer
30. 0x00007FF6AF2B3CF0 (Unity) MainMessageLoop
31. 0x00007FF6AF2BD9FA (Unity) WinMain
32. 0x00007FF6B223F922 (Unity) __scrt_common_main_seh
33. 0x00007FF8B8194034 (KERNEL32) BaseThreadInitThunk
34. 0x00007FF8B87D3691 (ntdll) RtlUserThreadStart

 

@ZimM Hey, any news about 2019.3 update? Or you are waiting for stable release?

 

The author does not seem to be active on all visible communication channel since last year. Fortunately he included the source files in the package.

 

I fixed a bug. Use Asset Pipeline v1(legacy) and edit source code null exception.
Here is screenshot.

 

How did you deal with null exception?

 

@TimNedvyga Edit 'BuildPlatformsUtility.cs' like this. It's just simple reflection.

 

Nice, it works
It remains to find a fix for Asset Pipeline v2

 

May I ask where do you find the BuildPlatformsUtility.cs? I am unable to locate it within my project files

 

1. Remove DLL
SpriteSharp/Editor/LostPolygon.SpriteSharp.dll

2. Import Unity Package
SpriteSharp/SpriteSharpSource.unitypackage

3. Find 'BuildPlatformsUtility' in Project Window

 

Ahh Thank you!

 

SpriteSharp 2.5.1.0
Unity 2018.4.14f1

Hey,
I recently bought the SpriteSharp tools, and it works as fine, generating sprite and exporting them it's perfect. Thanks a lot for the Dev and the community for improving the tools.
But in the console, I have some errors (and I'm not a programmer, either tech artist), I tried the answer of everyone heres, but still had errors.
If you have a suggestion, I'm here

 

Guys, i think Zim has abandoned this asset. The last time he was online was in Oct 28, 2019

I used this asset and it was great, but now Unity has a build in Tool that accomplishes overdraw reduction on sprites and since some time these sprites can even be used on UI-objects, hurray!

 

SpriteSharp is very usefull, and Unity can't create sprite with this kind of details. Here for exemple, you can create a sprite with Opaque surface and keep the sprites border in Alpha. And one more thing, you can export the generate sprites mesh into a seprate mesh and material.

 

Then i am wrong! Where is ZimM? We need Updates

 

Just picked this up from the Asset Store, unfortunate to see that the dev is MIA. Hopefully will return and support it.... Thanks to those with tips on how to hack it for now.

 

I got in touch with him on Facebook. He said that the update is coming. So cross your fingers, guys

 

Awesome! Can't wait for the update to arrive!

 

Did he provide any update when he is expecting to update it?

 

Nah, I no longer heard from him since then

 

I tried fixing the bug myself, but the behavior of the asset database APIs has changed in AssetDatabase v2 in a way that's incompatible with the plugin's internals. I've asked, whether the new behavior of the APIs is intended or it might be a bug, but nobody from unity has answered yet. There's no information in the API docs. Here's the thread:

https://forum.unity.com/threads/ass...n-results-during-onpostprocesssprites.879541/

 

ZimM was last seen: Jun 15, 2020...

 

Darn it... I have asked for a refund but I highly doubt the author will respond to my email. I will be very surprised to actually get a refund.

 

I gave up. I'm making something like spritesharp. It's open source.
I will release it within this year.

 

Wow Nice! Am looking forward to this!

 

Unity-SpriteAssist released!
https://github.com/sr4dev/Unity-SpriteAssist

 

Wow! I will definitely be trying your Unity-SpriteAssist asset!!

EDIT: Just tried it out, it is working in new unity versions perfectly!


Left: Unity original sprite mesh. Right: SpriteAssist asset

 

Hey @Seromu thank you for making this! It works great! Do you have any plans for adding this to the Asset Store?

I have a feature request: Would you be able to add a "grid" mesh type where we can vary the mesh resolution? I have some vertex animation features in my shader, and would like to make use of them, while still keeping the sprite atlas intact, and not have to make a new material for a traditional mesh.

If you don't have plans to release on the Asset Store, do you have a PayPal or something? I would like to express tangible thanks.

 

@Klausology @Glaswyll
Thank you for your feedback.

I want to release this to the Asset Store too.
(Maybe within this year?)

Grid mesh... I will try this

I have no Paypal account.
Sorry.

 

I agree with @Glaswyll, I would want to buy your asset in the asset store too!

 

Unity-SpriteAssist is always free
On the Asset Store too.

 

This is a ridiculously helpful asset. I needed normals for lightmapping so added them, only somewhat sure I did it right, LMK if not

Code (CSharp):

1.         public static void UpdateMesh(this Sprite sprite, ref Mesh mesh, Vector2[] v, ushort[] t)
2.         {
3.             Vector2[] uv = new Vector2[v.Length];
4.  
5.             for (var i = 0; i < uv.Length; i++)
6.             {
7.                 uv[i] = v[i] * sprite.pixelsPerUnit + sprite.pivot;
8.                 uv[i].x /= sprite.texture.width;
9.                 uv[i].y /= sprite.texture.height;
10.             }
11.          
12.             Vector3[] normals = new Vector3[v.Length];
13.             for (var i = 0; i < normals.Length; i++)
14.             {
15.                 normals[i] = Vector3.back;
16.             }
17.          
18.             mesh.Clear();
19.             mesh.SetVertices(Array.ConvertAll(v, i => (Vector3)i));
20.             mesh.SetUVs(0, uv);
21.             mesh.SetNormals(normals);
22.             mesh.SetTriangles(Array.ConvertAll(t, i => (int)i), 0);
23.         }

Please at least provide a Paypal address so we can send you beer money!

 

I
Thank you for your feedback!
Would you be interested in contributing your code to SpriteAssist?

 

For such small changes I think you could just copy/paste ...

TBH I'm not sure how best to interact with 3rd party packages that I want to make changes to ... my IDE (Rider) doesn't seem to work properly (code-completion/refactoring/compilation) with anything in packages and changes get reverted somehow (by Unity?). For now I took the easy route and just copied the code vs. using Sprite Assist as a package ... guess ideally I'd set it up as a fork/submodule.

 

I see. I'll add normals to mesh

 

Changes in read-only packages are usually reverted by Unity Package Manager without any notice.
If you like to have your own version of a read-only package in Rider you should drag-n-drop it from read-only to `Packages`, it would make a copy of package. This new package is `Local` and Unity would prefer it.

 

+1 for the grid mesh type, I also have vertex animation features

 

I'd like to revive a project which made heavy use of the sprite mesh grid feature in spritesharp. So, another +1 for the grid mesh type

 

@Glaswyll @oakus @Gruguir

Sorry for late.
Grid Mesh is work in progress now.

 

That's fantastic news! Thank you @Seromu !

 

https://github.com/sr4dev/Unity-SpriteAssist/releases/tag/v0.10.1

I added grid mesh but I think it's not stabilized.
I need more test and feedback about this feature.

 

Thanks @Seromu ! The update is looking good!

I wanted to share the difference it makes in a project as far as motion consistency compared to Unity's default triangulation method.

I did find a bug in the alpha detection. It may be something else, but it looks like it's adding additional polygons in areas that are transparent.

 

@Glaswyll Thank you for feedback!! I'll fix it!

 

The grid mesh bug has been fixed!
I updated new version(v0.10.2).
https://github.com/sr4dev/Unity-SpriteAssist/releases/tag/v0.10.2

Before -> After

 

@Seromu Thank you for this update!

I noticed a couple bugs when working with Sprite Mode set to Multiple. Please check out the following:

I've noted these three bugs, shown in the above video:

• The initial mesh looks incorrectly sized and positioned compared to the Sprite bounds.
• When changing SpriteAssist Mode to Grid, the color information disappears.
• When using SpriteAssist Mode - Grid and Sprite Mode - Multiple, the grid mesh appears to be applying UV coordinates for the entire atlas to a single Sprite.

This is looking good so far!

 

This looks promising, but I am using it on pixel art assets and I need the details to be even finer so that it culls out empty spaces much more extensively. Value of 1 looks identical to what Unity gives for me, is there way to tighten this up?