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Destructible Mesh Interior Material Issue

Hello, My interior material not affected fractures on my Destructible Mesh. How can i solve this?

Im using last version (4.19).

Edit: Same unanswered problem is here.

Edit2: Another unsolved problem is here.

DM Editor

Product Version: UE 4.19
screenshot-7.png (199.2 kB)
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asked May 23 '18 at 06:19 PM in Using UE4

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avatar image PhungDinhThang Jan 12 '19 at 03:18 PM

It was broken by some changes since 4.18 . My quick fix for this is adding this line to DestructibleFractureSettings.cpp ( if you use C++ version of the Engine, the file should be inside UnrealEngine\Engine\Plugins\Runtime\ApexDestruction\Source\ApexDestruction\Private :

         FCStringAnsi::Strncpy(SubmeshData.mMaterialName, "InteriorMaterial", nvidia::apex::ExplicitSubmeshData::MaterialNameBufferSize);

to this block of code : ..

     // For now just copy the submesh data from the 0 submesh.
         apex::ExplicitSubmeshData SubmeshData;
         apex::ExplicitSubmeshData* SourceSubmeshData = HMesh.submeshData(0);
         if (SourceSubmeshData != NULL)
             SubmeshData = *SourceSubmeshData;

         FCStringAnsi::Strncpy(SubmeshData.mMaterialName, "InteriorMaterial", nvidia::apex::ExplicitSubmeshData::MaterialNameBufferSize);

         // BRG - this is being done until I add the ability to reset the submesh data without resetting the mesh data in the fracture tools
         if (HMesh.submeshCount() > (uint32)OriginalSubmeshCount)


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1 answer: sort voted first

If anyone need a solution, maybe can help this: I turned on v4.17 and it was works perfectly. Then i have set what i need on DM and migrated to v4.19. This is solution for me for now.

But there is still a bug on v4.19.

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answered May 24 '18 at 06:56 PM

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avatar image Obihb Sep 06 '18 at 07:55 AM

Had this same problem with 4.20, tried the 4.17 workaround and that works, but unfortunately this is still broken in 4.20 as well.

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