Something went wrong when PostProcessing the assembly, from Entities.Foreach lambda

Hello. I got this unfriendly error:

Code (CSharp):

1. Something went wrong while Post Processing the assembly (Assembly-CSharp.dll) :
2. Sequence contains no matching element
3.   at System.Linq.Enumerable.Single[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00070]

From this:

Code (CSharp):

1.  
2.  
3.       var bufferEntity = streamBufferQuery.GetSingletonEntity();
4.       var bufferFromEntity = GetBufferFromEntity<SpriteUVData>(false);
5.  
6.       inputDeps = Entities.
7.             WithNone<StreamBuffer>().
8.             WithChangeFilter<SpriteUVData>().
9.             WithNativeDisableParallelForRestriction(bufferFromEntity).
10.             ForEach(
11.             (int entityInQueryIndex, in DynamicBuffer<SpriteUVData> uv) =>
12.             {
13.             }).Schedule(inputDeps);

That's with the empty lambda. It goes away if I comment out the WithNativeDisableParallelForRestriction.

I'm guessing maybe it's from trying to pass a BufferFromEntity<SpriteUVData> in WithNativeDisableParallelFor while also using DynamicBuffer<SpriteUVData> as a type in the arguments in the lambda?

For a little more context, these are for two separate entities that have the same type of Dynamic Buffer, I want to copy all the data from all the individual buffers into one big one (without actually making a copy - to avoid the GC allocations).

 

I'm dumb, I guess I wasn't paying attention to the "Sequence contains no matching element" part. The error occurred specifically because i had commented out the code that was using the buffer inside the lambda while I was testing. I still feel like that error message could be a bit clearer about what was wrong there, if at all possible.

 

i ran into same problem when i try to use generic types in lambda function, will generics be supported ?

 

n

thx for reply, not that hard though for my case.
an off-topic question, how can visual studio/other ide produce same compile error? my frustration mainly came from after i finish my coding, i start to know Enitities doesn't support generics in jobs (meanwhile it does support generics in non-job code)

 

But my error message is:

Code (CSharp):

1. Something went wrong while Post Processing the assembly (Assembly-CSharp.dll) :
2. Object reference not set to an instance of an object
3.   at Unity.Entities.CodeGen.TypeDefinitionExtensions.IsComponentSystem (Mono.Cecil.TypeDefinition arg) [0x00001] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\CecilExtensionMethods.cs:142
4.   at Unity.Entities.CodeGen.TypeDefinitionExtensions.IsComponentSystem (Mono.Cecil.TypeDefinition arg) [0x000a2] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\CecilExtensionMethods.cs:156
5.   at Unity.Entities.CodeGen.TypeDefinitionExtensions.IsComponentSystem (Mono.Cecil.TypeDefinition arg) [0x000a2] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\CecilExtensionMethods.cs:156
6.   at System.Linq.Enumerable+WhereEnumerableIterator`1[TSource].ToArray () [0x0001d] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
7.   at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x0001f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
8.   at Unity.Entities.CodeGen.LambdaJobsPostProcessor.PostProcessImpl () [0x00001] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\LambdaJobs\LambdaJobsPostProcessor.cs:177
9.   at Unity.Entities.CodeGen.EntitiesILPostProcessor.PostProcess (Mono.Cecil.AssemblyDefinition assemblyDefinition, System.Boolean& madeAChange) [0x00009] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:209
10.   at Unity.Entities.CodeGen.EntitiesILPostProcessors.Process (Unity.CompilationPipeline.Common.ILPostProcessing.ICompiledAssembly compiledAssembly) [0x0004b] in C:\Users\linfu\Documents\Code\RTS\Main\RTS\RTS\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:44
11.   at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.RunILPostProcessors (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.String outputTempPath) [0x0011b] in <3b74787e58694cdda2c241162159b3b7>:0
12.   at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.PostProcess (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.Collections.Generic.List`1[T] messages, System.String outputTempPath) [0x00061] in <3b74787e58694cdda2c241162159b3b7>:0

What's it mean??

 

My Project is too large that i can't share to you.
If I modify Unity.Entities.CodeGen.CecilExtensionMethods.cs:


The log is:

Is it helpful?

 

I too have run into this bug, my horrible fix is to change line 142 to:

Code (CSharp):

1. var baseTypeRef = arg?.BaseType;

But I have to keep remaking this change as the package system keeps resetting it

 

Another "Something went wrong" error. Having this

Code (CSharp):

1. class FontRef : IComponentData
2. {
3.     public TMPro.TMP_FontAsset Font;
4. }

anywhere in the project using Entities 0.3 causes the build to fail with the following error:

Spoiler

Code (csharp):

1.  
2. Something went wrong while Post Processing the assembly (Assembly-CSharp.dll) :
3.  Member 'UnityEngine.TextCore.Glyph' is declared in another module and needs to be imported
4.   at Mono.Cecil.MetadataBuilder.LookupToken (Mono.Cecil.IMetadataTokenProvider provider) [0x0003c] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
5.   at Mono.Cecil.SignatureWriter.MakeTypeDefOrRefCodedRID (Mono.Cecil.TypeReference type) [0x00000] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
6.   at Mono.Cecil.SignatureWriter.WriteTypeSignature (Mono.Cecil.TypeReference type) [0x00161] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
7.   at Mono.Cecil.SignatureWriter.WriteGenericInstanceSignature (Mono.Cecil.IGenericInstance instance) [0x00021] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
8.   at Mono.Cecil.SignatureWriter.WriteTypeSignature (Mono.Cecil.TypeReference type) [0x000cf] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
9.   at Mono.Cecil.SignatureWriter.WriteGenericInstanceSignature (Mono.Cecil.IGenericInstance instance) [0x00021] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
10.   at Mono.Cecil.MetadataBuilder.GetMethodSpecSignature (Mono.Cecil.MethodSpecification method_spec) [0x00023] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
11.   at Mono.Cecil.MetadataBuilder.CreateMethodSpecRow (Mono.Cecil.MethodSpecification method_spec) [0x00012] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
12.   at Mono.Cecil.MetadataBuilder.GetMethodSpecToken (Mono.Cecil.MethodSpecification method_spec) [0x00000] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
13.   at Mono.Cecil.MetadataBuilder.LookupToken (Mono.Cecil.IMetadataTokenProvider provider) [0x000cb] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
14.   at Mono.Cecil.Cil.CodeWriter.WriteOperand (Mono.Cecil.Cil.Instruction instruction) [0x00229] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
15.   at Mono.Cecil.Cil.CodeWriter.WriteInstructions () [0x0002c] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
16.   at Mono.Cecil.Cil.CodeWriter.WriteResolvedMethodBody (Mono.Cecil.MethodDefinition method) [0x0002e] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
17.   at Mono.Cecil.Cil.CodeWriter.WriteMethodBody (Mono.Cecil.MethodDefinition method) [0x0002b] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
18.   at Mono.Cecil.MetadataBuilder.AddMethod (Mono.Cecil.MethodDefinition method) [0x00013] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
19.   at Mono.Cecil.MetadataBuilder.AddMethods (Mono.Cecil.TypeDefinition type) [0x00013] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
20.   at Mono.Cecil.MetadataBuilder.AddType (Mono.Cecil.TypeDefinition type) [0x000a2] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
21.   at Mono.Cecil.MetadataBuilder.AddTypes () [0x00018] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
22.   at Mono.Cecil.MetadataBuilder.BuildTypes () [0x00014] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
23.   at Mono.Cecil.MetadataBuilder.BuildModule () [0x0009f] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
24.   at Mono.Cecil.MetadataBuilder.BuildMetadata () [0x00000] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
25.   at Mono.Cecil.ModuleWriter+<>c.<BuildMetadata>b__2_0 (Mono.Cecil.MetadataBuilder builder, Mono.Cecil.MetadataReader _) [0x00000] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
26.   at Mono.Cecil.ModuleDefinition.Read[TItem,TRet] (TItem item, System.Func`3[T1,T2,TResult] read) [0x00025] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
27.   at Mono.Cecil.ModuleWriter.BuildMetadata (Mono.Cecil.ModuleDefinition module, Mono.Cecil.MetadataBuilder metadata) [0x0000f] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
28.   at Mono.Cecil.ModuleWriter.Write (Mono.Cecil.ModuleDefinition module, Mono.Disposable`1[T] stream, Mono.Cecil.WriterParameters parameters) [0x000fb] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
29.   at Mono.Cecil.ModuleWriter.WriteModule (Mono.Cecil.ModuleDefinition module, Mono.Disposable`1[T] stream, Mono.Cecil.WriterParameters parameters) [0x00002] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
30.   at Mono.Cecil.ModuleDefinition.Write (System.IO.Stream stream, Mono.Cecil.WriterParameters parameters) [0x00019] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
31.   at Mono.Cecil.AssemblyDefinition.Write (System.IO.Stream stream, Mono.Cecil.WriterParameters parameters) [0x00000] in <58b86858c52b4b5fbb6efedd16c9c16a>:0
32.   at Unity.Entities.CodeGen.EntitiesILPostProcessors.Process (Unity.CompilationPipeline.Common.ILPostProcessing.ICompiledAssembly compiledAssembly) [0x000df] in C:\Projects\Tests\ECSTests\Library\PackageCache\com.unity.entities@0.3.0-preview.4\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:58
33.   at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.RunILPostProcessors (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.String outputTempPath) [0x0011b] in <cdd38c6cb7c446c6ac90945c7521da61>:0
34.   at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.PostProcess (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.Collections.Generic.List`1[T] messages, System.String outputTempPath) [0x00061] in <cdd38c6cb7c446c6ac90945c7521da61>:0
35.  

(works fine in the editor)

 

@linfuqing

I had this error as well and had to downgrade the Collections package. I'm using URP in 2019.3.0f3 on mac with .NET4

 

Code (CSharp):

1. Something went wrong while Post Processing the assembly (Assembly-CSharp.dll) :
2. Failed to resolve System.Collections.Generic.Queue`1
3.   at Unity.Entities.CodeGen.TypeReferenceExtensions.CheckedResolve (Mono.Cecil.TypeReference typeReference) [0x00000] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\CecilExtensionMethods.cs:13
4.   at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.<VerifyMethod>g__IsTypeRestrictedToBlobAssetStorage|3_0 (Mono.Cecil.TypeReference tr, Unity.Entities.CodeGen.BlobAssetSafetyVerifier+<>c__DisplayClass3_0& ) [0x000a1] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:64
5.   at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.VerifyMethod (Mono.Cecil.MethodDefinition method, System.Collections.Generic.HashSet`1[T] _nonRestrictedTypes) [0x0004d] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:90
6.   at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.AssertNoBlobAssetLeavesBlobAssetStorage () [0x0004d] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:37
7.   at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.PostProcessImpl () [0x00007] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:20
8.   at Unity.Entities.CodeGen.EntitiesILPostProcessor.PostProcess (Mono.Cecil.AssemblyDefinition assemblyDefinition, System.Boolean& madeAChange) [0x00007] in E:\Unity Projects\tests0\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:231
9.  

I got this from upgrading collections to preview 6 0.0.4

 

@Lucas-Meijer I'd like to provide a scenario in which generics can be helpful, as I just got the following message while trying to add generics support:

Code (CSharp):

1. Unexpected error while post-processing XXXXXXXXX.ECS.Systems.MouseAbsorptionSystem`1:OnUpdate. Please report this error.
2. Object reference not set to an instance of an object
3.   at Unity.Entities.CodeGen.TypeReferenceExtensions.TypeImplements (Mono.Cecil.TypeReference typeReference, System.Type interfaceType) [0x00015] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\CecilExtensionMethods.cs:60
4.   at Unity.Entities.CodeGen.TypeReferenceExtensions.IsIComponentDataStruct (Mono.Cecil.TypeDefinition typeDefinition) [0x00000] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\CecilExtensionMethods.cs:31
5.   at Unity.Entities.CodeGen.InjectAndInitializeEntityQueryField.WithAllTypeArgumentForLambdaParameter (Mono.Cecil.ParameterDefinition p) [0x00029] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\LambdaJobs\InjectAndInitializeEntityQueryField.cs:288
6.   at (wrapper delegate-invoke) System.Func`2[Mono.Cecil.ParameterDefinition,System.ValueTuple`2[Mono.Cecil.TypeReference,System.Boolean]].invoke_TResult_T(Mono.Cecil.ParameterDefinition)
7.   at System.Linq.Enumerable+SelectArrayIterator`2[TSource,TResult].MoveNext () [0x0003a] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
8.   at System.Linq.Enumerable+WhereEnumerableIterator`1[TSource].MoveNext () [0x0004e] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
9.   at System.Collections.Generic.LargeArrayBuilder`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] items) [0x0005e] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
10.   at System.Collections.Generic.SparseArrayBuilder`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] items) [0x00000] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
11.   at System.Collections.Generic.SparseArrayBuilder`1[T].ReserveOrAdd (System.Collections.Generic.IEnumerable`1[T] items) [0x00017] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
12.   at System.Linq.Enumerable+Concat2Iterator`1[TSource].ToArray () [0x00015] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
13.   at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x0001f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
14.   at Unity.Entities.CodeGen.InjectAndInitializeEntityQueryField.AddGetEntityQueryFromMethod (Unity.Entities.CodeGen.LambdaJobDescriptionConstruction descriptionConstruction, Mono.Cecil.ParameterDefinition[] closureParameters, Mono.Cecil.TypeDefinition typeToInjectIn) [0x002cf] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\LambdaJobs\InjectAndInitializeEntityQueryField.cs:228
15.   at Unity.Entities.CodeGen.InjectAndInitializeEntityQueryField.InjectAndInitialize (Mono.Cecil.MethodDefinition methodToAnalyze, Unity.Entities.CodeGen.LambdaJobDescriptionConstruction descriptionConstruction, Mono.Collections.Generic.Collection`1[T] closureParameters) [0x00048] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\LambdaJobs\InjectAndInitializeEntityQueryField.cs:42
16.   at Unity.Entities.CodeGen.LambdaJobsPostProcessor.Rewrite (Mono.Cecil.MethodDefinition methodContainingLambdaJob, Unity.Entities.CodeGen.LambdaJobDescriptionConstruction lambdaJobDescriptionConstruction, System.Collections.Generic.List`1[T] warnings) [0x002b6] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\LambdaJobs\LambdaJobsPostProcessor.cs:334
17.   at Unity.Entities.CodeGen.LambdaJobsPostProcessor.PostProcessImpl () [0x000b0] in XXXXXXX\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\LambdaJobs\LambdaJobsPostProcessor.cs:196

(this is using entities v0.4 preview 10)

In our game the player can interact with various types of "elements" (fire, earth, water, ...). They all use the same base logic, except for being a different type internally.

Each type requires buffers, several components, systems for collision, mouse and world interaction.
Per type this is about 10 systems (which sums up to like 60 systems). The amount of copy and paste would be quite high, especially during the initial prototyping phase where we still flesh out the mechanics.

Consolidating all elements into one component is also not a great solution, as most of the objects don't have more than 2 or 3, so that'd be just wasted memory.

I would be grateful if you could reconsider adding generics support or give me some hints as to how not using generics could work in our use case.

 

Confirmed. I have the same sort of problem using TextMeshPro. Have you found any workaround?

 

I wasn't really using TMP, just wanted the glyph info. My hack-around was to copy the relevant data into a ScriptableObject via an editor script. (The postprocessor crashed on anything from UnityEngine.TextCore, so you need to define your own data structure all the way down to ints/floats).

If you need the actual font reference I belive as of Entities 0.3 there was no workaround (haven't checked since).

 

Thank you. I was also thinking to move everything related to UI outside of ECS components.
I will try that.

Cheers.

 

Hi there. I decided to gave up utilizing Unity ECS for my projects and techically got no time to be Unity's QA for free.

All the best.

 

@Lucas-Meijer While generics aren't ever going to be strictly necessary because one can just write a tonne of duplicate code, I've got a few use cases that would be a real pain if generics weren't involved. Here's the most complex one which is used to synchronise data from ECS to my UI models:

Code (CSharp):

1.  
2. public abstract class InspectableComponentModel : IComponentData {
3.     public Entity AssociatedEntity { get; set; }
4.     public RemoteEntityId AssociatedRemoteEntityId { get; set; }
5. }
6.  
7. [UpdateAfter(typeof(InspectEntitySystem))]
8. public abstract class SynchronizeInspectedModelSystem<TComponent,TModel> : ComponentSystem
9.     where TComponent : struct, IComponentData
10.     where TModel : InspectableComponentModel, new()
11. {
12.     public struct LastComponentData : ISystemStateComponentData {
13.         public TComponent Value;
14.     }
15.  
16.  
17.     private EntityQuery _addQuery, _synchronizeQuery, _removeQuery;
18.  
19.      [Zenject.Inject]
20.      private DiContainer _diContainer = null;
21.  
22.     private bool _isZeroSized;
23.  
24.     protected virtual bool Interleave => true;
25.  
26.     protected override void OnCreate() {
27.         _addQuery = GetEntityQuery(
28.                                    ComponentType.ReadOnly<InspectedEntity>(),
29.                                    ComponentType.ReadOnly<RemoteEntityId>(),
30.                                    ComponentType.ReadOnly<TComponent>(),
31.                                    ComponentType.Exclude<LastComponentData>()
32.         );
33.      
34.         _synchronizeQuery = GetEntityQuery(
35.                                    ComponentType.ReadOnly<InspectedEntity>(),
36.                                    ComponentType.ReadOnly<TComponent>(),
37.                                    ComponentType.ReadOnly<TModel>(),
38.                                    ComponentType.ReadWrite<LastComponentData>()
39.                                   );
40.      
41.         // TODO(DR): Figure out why this is filtering out actual changes and fix it so we're not always having to run checks. Could always jobify the checks
42.         //_synchronizeQuery.SetFilterChanged(ComponentType.ReadOnly<TComponent>());
43.      
44.         _removeQuery = GetEntityQuery(
45.                                    ComponentType.Exclude<InspectedEntity>(),
46.                                    ComponentType.ReadOnly<TComponent>(),
47.                                    ComponentType.ReadOnly<TModel>(),
48.                                    ComponentType.ReadOnly<LastComponentData>()
49.                                   );
50.  
51.         _isZeroSized = TypeManager.IsZeroSized(TypeManager.GetTypeIndex(typeof(TComponent)));
52.      
53.     }
54.  
55.     protected override unsafe void OnUpdate() {
56.         using (var buffer = new ManagedComponentCommandBuffer(_addQuery.CalculateEntityCount())) {
57.      
58.             void CreateModel(Entity entity, RemoteEntityId remoteEntityId, TComponent component) {
59.                 var model = new TModel {
60.                     AssociatedEntity = entity,
61.                     AssociatedRemoteEntityId = remoteEntityId
62.                 };
63.                 _diContainer.Inject(model);
64.      
65.                 Synchronize(component, model);
66.                 buffer.AddComponent(entity, model);
67.      
68.                 PostUpdateCommands.AddComponent(entity, new LastComponentData() {
69.                     Value = component
70.                 });
71.      
72.                 var inspectedEntity = EntityManager.GetComponentObject<InspectedEntity>(entity);
73.              
74.                 var models = inspectedEntity.ComponentModels.Value;
75.                 var newModels = models.Add(model);
76.              
77.                 inspectedEntity.ComponentModels.SetValue(newModels).Play();
78.             }
79.      
80.             if (_isZeroSized) {
81.                 Entities.With(_addQuery).ForEach((Entity entity, ref RemoteEntityId remoteEntityId) => CreateModel(entity, remoteEntityId, default));
82.             } else {
83.                 Entities.With(_addQuery).ForEach((Entity entity, ref RemoteEntityId remoteEntityId, ref TComponent component) => CreateModel(entity, remoteEntityId, component));
84.      
85.                 if (!Interleave || InterleaveUtil<TComponent>.ShouldExecute) {
86.                     Entities
87.                         .With(_synchronizeQuery)
88.                         .ForEach((Entity entity, TModel model, ref TComponent component, ref LastComponentData lastSyncedComponent) => {
89.                             if (UnsafeUtility.MemCmp(UnsafeUtility.AddressOf(ref lastSyncedComponent),
90.                                                      UnsafeUtility.AddressOf(ref component),
91.                                                      UnsafeUtility.SizeOf<TComponent>()) == 0) {
92.                                 return;
93.                             }
94.      
95.                             PostUpdateCommands.SetComponent(entity, new LastComponentData() {
96.                                 Value = component
97.                             });
98.                             Synchronize(component, model);
99.                         });
100.                 }
101.             }
102.          
103.             buffer.Flush(EntityManager);
104.         }
105.  
106.         EntityManager.RemoveComponent<LastComponentData>(_removeQuery);
107.         EntityManager.RemoveComponent<TModel>(_removeQuery);
108.     }
109.  
110.     protected abstract void Synchronize(TComponent component, TModel model);
111. }
112.  
113. [UpdateInWorld(UpdateInWorld.TargetWorld.Client)]
114. [UpdateInGroup(typeof(PresentationSystemGroup))]
115. public class SynchronizeViewportBoundsModel : SynchronizeInspectedModelSystem<ViewportBounds, ViewportBoundsModel> {
116.     protected override bool Interleave => false;
117.  
118.     protected override void Synchronize(ViewportBounds component, ViewportBoundsModel model) {
119.         model.Min.SetValue((Vector2)component.Min).Play();
120.         model.Max.SetValue((Vector2)component.Max).Play();
121.     }
122. }
123.  

I guess the only workaround right now is to use the old style of system? i.e.

EntityQuery.ToComponentDataArray

If it really isn't possible to use generics or adds too much complexity to provide any time soon, would it be possible to get something like

Entities.WithoutPostProcessing()

so that we can opt out in cases where we think the performance hit is acceptable?

Thanks!

 

So I managed to resolve some other issues around Post Processing and managed to create a build again using 2019.3. The Post Processor didn't actually complain at all about the above system, so is this actually supported because it's in an abstract class so not processed and all the concrete types fully specify the generic parameters?