Compatibility issues Nuget restore

[awesomeinsight]

Hi and thanks for providing this Draco wrapper!

I did some experiments with the Nuget package and got the following warning during build (using .net 8 console application):

[NU1701] Package 'Draco_transcoder 3.3.4' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net8.0'. This package may not be fully compatible with your project.

Is it possible that you support .net standard (2.0) for this package?
https://learn.microsoft.com/de-de/dotnet/standard/net-standard?tabs=net-standard-2-0

Or do you think that there is any other easy fix for this problem?

Maybe this is also related to an x86 <--> x64 issue.
Currently I cannot use the Nuget at all when I for example try to execute the code from your documentation I get a:
Unhandled exception. System.BadImageFormatException: Could not load file or assembly '*/bin/Debug/net8.0/DracoWrapper.dll'. An attempt was made to load a program with an incorrect format.

[rosend]

i had the same problem :(

[xiaoyuvax]

same problem
Can this project owner make it compatible with net core and above?

[vnoves]

@awesomeinsight I have already updated the package to work with .net core, but the issue that you are mentioning is not due to the framework version but a problem related to the mixed-use of unmanaged Code(c++) and managed Code(C#).

I experienced the same problem and endep up solving it in the following way:

public class NonCollectibleAssemblyLoadContext : AssemblyLoadContext
    {
        public NonCollectibleAssemblyLoadContext() : base(isCollectible: false)
        {
        }
    }


        var loadContext = new NonCollectibleAssemblyLoadContext();
            var assemblyPath = @"C:\location\of\your\dll\DracoWrapper.dll";
            Assembly mixedModeAssembly = loadContext.LoadFromAssemblyPath(assemblyPath);

            var gltfDecoderType = mixedModeAssembly.GetType("dracowrapper.GltfDecoder");
            var gltfDecoderInstance = Activator.CreateInstance(gltfDecoderType);

            var decodeFromFileToSceneMethod = gltfDecoderType.GetMethod("DecodeFromFileToScene");
            var res = decodeFromFileToSceneMethod.Invoke(gltfDecoderInstance, new object[] { fileToCompress });
            var resType = res.GetType();
            var valueMethod = resType.GetMethod("Value");
            var scene = valueMethod.Invoke(res, null);

            var dracoCompressionOptionsType = mixedModeAssembly.GetType("dracowrapper.DracoCompressionOptions");
            var dracoCompressionOptionsInstance = Activator.CreateInstance(dracoCompressionOptionsType);

            var sceneUtilsType = mixedModeAssembly.GetType("dracowrapper.SceneUtils");
            var setDracoCompressionOptionsMethod = sceneUtilsType.GetMethod("SetDracoCompressionOptions");
            setDracoCompressionOptionsMethod.Invoke(null, new object[] { dracoCompressionOptionsInstance, scene });

            var gltfEncoderType = mixedModeAssembly.GetType("dracowrapper.GltfEncoder");
            var gltfEncoderInstance = Activator.CreateInstance(gltfEncoderType);
            var encodeSceneToFileMethod = gltfEncoderType.GetMethod("EncodeSceneToFile");
            encodeSceneToFileMethod.Invoke(gltfEncoderInstance, new object[] { scene, fileToCompressTemp });

I hope this helps

[vnoves]

@xiaoyuvax I have already updated the NuGet version 3.5.0 to be compatible with .net core

[xiaoyuvax]

thanks anyway!
yes, the limitation is due to the mix compilation, as i've mentioned in #4 , which makes this wrapper not-so-ideally works under windows only.

Recently i've already seen pure C# port of Google Draco (only Draco, not Draco-ed glTF), check it out here: https://github.com/fileformat-drako/FileFormat.Drako-for-.NET, and it is hopefully to be a more cross-platform-able solution.