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+--- Thread: System.AccessViolationException then try open the fbx model (/showthread.php?tid=4128)
System.AccessViolationException then try open the fbx model - Alex3d - 03-19-2019
I received a the next exception and a programm did crash when try to open attached model.
I tried this with 8.3.6989 and 8.2.6863 versions using different methods.
I can send a project to your email.
Code:
System.AccessViolationException
HResult=0x80004003
Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source=AssimpNet
StackTrace:
at Assimp.MemoryHelper.Read[T](IntPtr pSrc, T[] data, Int32 startIndexInArray, Int32 count)
at Assimp.MemoryHelper.FromNativeArray[T](IntPtr nativeArray, Int32 length)
at Assimp.EmbeddedTexture.Assimp.IMarshalable<Assimp.EmbeddedTexture,Assimp.Unmanaged.AiTexture>.FromNative(AiTexture& nativeValue)
at Assimp.MemoryHelper.FromNativeArray[Managed,Native](IntPtr nativeArray, Int32 length, Boolean arrayOfPointers)
at Assimp.Scene.Assimp.IMarshalable<Assimp.Scene,Assimp.Unmanaged.AiScene>.FromNative(AiScene& nativeValue)
at Assimp.MemoryHelper.FromNativePointer[Managed,Native](IntPtr ptr)
at Assimp.Scene.FromUnmanagedScene(IntPtr scenePtr)
at Assimp.AssimpContext.ImportFile(String file, PostProcessSteps postProcessFlags)
at Ab3d.Assimp.AssimpWpfImporter.ReadFileToAssimpScene(String fileName)RE: System.AccessViolationException then try open the fbx model - abenedik - 03-20-2019
There is no attachment with the post.
Anyway, from the exception message I would say that the embedded texture was not correctly read by the assimp importer. I cannot do much there.
If possible, try to save your model without embedding the textures.
RE: System.AccessViolationException then try open the fbx model - Alex3d - 03-20-2019
(03-20-2019, 02:08 PM)abenedik Wrote: There is no attachment with the post....
You can download model by next link
https://my.pcloud.com/publink/show?code=XZAR1t7ZhkRJy565zlRpjHO6YjDUc8bXMJlk
RE: System.AccessViolationException then try open the fbx model - abenedik - 03-20-2019
I have tried your model and found out that the exception happens only in x64 mode. If you build the application with x86 mode, then the file is read without problems.
I will check if it is possible to update the managed AssimpNet wrapper to prevent that problem.
RE: System.AccessViolationException then try open the fbx model - Alex3d - 03-20-2019
(03-20-2019, 03:18 PM)abenedik Wrote: I have tried your model and found out that the exception happens only in x64 mode. If you build the application with x86 mode, then the file is read without problems.
I will check if it is possible to update the managed AssimpNet wrapper to prevent that problem.
Unfortunately I can use only in x64 mode.
Quote: will check if it is possible to update the managed AssimpNet wrapper to prevent that problem.
This will be great.
Thanks!
RE: System.AccessViolationException then try open the fbx model - abenedik - 03-20-2019
I have tried to use a newer version of assimp importer (compiled from source from 2019-02-19) and with this version your file was imported without problem in x86 and x64 mode.
You can get a newer assimp version from:
https://www.ab4d.com/GetFile.ashx?fileName=Assimp_2019-02-19.zip
Note that with this version I had some problems with importing some files that worked with a previous version. Therefore I did not include this version into the official Ab3d.PowerToys distribution.
Unfortunately, the development of assimp library does not have any recent and official version - the latest official release version is from July 2017. After that there were many improvements in the library but it is hard to get the source at the correct date when everything would work.
RE: System.AccessViolationException then try open the fbx model - Alex3d - 03-21-2019
Thanks but this didn't help.
Same bugs.
I found one solution what help to prevent program from crashing -
the attribute [HandleProcessCorruptedStateExceptions]
https://stackoverflow.com/a/6158298/2237301
If you need you can download more models what causes a crash by next link
https://my.pcloud.com/publink/show?code=kZ9vgt7Zn8rvW5r0UpYc8i1mnOhgB8pgtP9k