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google / draco

Draco is a library for compressing and decompressing 3D geometric meshes and point clouds. It is intended to improve the storage and transmission of 3D graphics.
https://google.github.io/draco/
Apache License 2.0
6.46k stars 961 forks source link

draco js mesh decoder with unity #625

Closed alitokur closed 3 years ago

alitokur commented 4 years ago

im using Draco to encode and decode my meshes. But Draco does not support to WebGL #436 . However, Draco supports javascript. And is that possible to run the Draco javascript decoder inside the unity? that is my .jslib file under the assets/plugin

mergeInto(LibraryManager.library, {

      DecodeMesh: function (byteArray) {
      <script src="https://rawgit.com/google/draco/master/javascript/draco_decoder.js"></script>
      'use strict';

      let dracoDecoderType = {};
      const dracoModule = DracoModule(dracoDecoderType); 
      const decoder = new dracoModule.WebIDLWrapper();

      const buffer = new dracoModule.DecoderBuffer();
      buffer.Init(byteArray, byteArray.length);

      let outputGeometry = decoder.DecodeMeshFromBuffer(buffer);

      alert('Num points = ' + outputGeometry.num_points());

      dracoModule.destroy(outputGeometry);
      dracoModule.destroy(decoder);
      dracoModule.destroy(buffer);
    },
});

and my script:

public class caller : MonoBehaviour { [DllImport("__Internal")] private static extern void DecodeMesh(byte[] array);

void Start()
{
    array1= "array to decoded"
    decodeMesh(array1);
}

}

When I try to build for webGL I get the following errors:

Failed running "C:/Program Files/Unity/Hub/Editor/2019.3.10f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Program Files/Unity/Hub/Editor/2019.3.10f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"C:\Users\alitokur\Desktop\js\Assets\..\Temp\emcc_arguments.resp"

stdout:
stderr:JS optimizer error:Unexpected token: name (dracoDecoderType) (line: 2099, col: 12, pos: 86653)================================      GLctx.bindTexture(GLctx.TEXTURE_2D, GL.textures[texture]);    }  function _DecodeMesh(byteArray) {        // Create the Draco decoder.        let dracoDecoderType = {};            ^================================C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:282        throw new JS_Parse_Error(message, line, col, pos);        ^Error    at new JS_Parse_Error (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:260:22)    at js_error (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:282:15)    at croak (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:752:17)    at token_error (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:760:17)    at unexpected (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:766:17)    at Object.semicolon (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:786:51)    at prog1 (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:1325:29)    at simple_statement (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:917:35)    at C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:827:35    at block_ (C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\eliminator\node_modules\uglify-js\lib\parse-js.js:1010:32)ERROR:root:'C:/Program Files/Unity/Hub/Editor/2019.3.10f1/Editor/Data\Tools\nodejs\node.exe --stack_size=8192 --max-old-space-size=4096 C:\Program Files\Unity\Hub\Editor\2019.3.10f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\js-optimizer.js C:\Users\alitokur\AppData\Local\Temp\tmpiqi8rq\build.bc.o.js.pp.js.mem.js noPrintMetadata AJSDCE minifyWhitespace' failed
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
Exception: Failed building WebGL Player.
UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)
UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (UnityEditor.Modules.BuildPostProcessArgs args, System.Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:445)
UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:495)
UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:930)
UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <17b72532ee2c4da1b6f632d3f1705fe0>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <17b72532ee2c4da1b6f632d3f1705fe0>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Build completed with a result of 'Failed' in 109 seconds (109038 ms)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
alitokur commented 3 years ago

Unfortunately, Draco has not been able to work in the browser as well. This fork maybe can help you.