title: (UE4 Assimp) Issues loading mtl texture at runtime
body: <p>I'm using Assimp to import 3d Obj at runtime with Unreal Engine.
  I try to import textures thanks to the mtl file, I can get the name texture file, but my problem is, how to use it to import the texture in a UTexture2D and put it in a MID ?</p>
  <pre><code>if (scene-&gt;HasMaterials())
      {
          for (unsigned int m = 0; m &lt; scene-&gt;mNumMaterials; ++m)
          {
              aiMaterial* material = scene-&gt;mMaterials[m];
              aiString materialName;
              aiReturn ret;
  
              ret = material-&gt;Get(AI_MATKEY_NAME, materialName);
              if (ret != AI_SUCCESS) materialName = &quot;&quot;;
  
              //Diffuse maps
              int numTextures = material-&gt;GetTextureCount(aiTextureType_DIFFUSE);
              aiString textureName;
  
              if (numTextures &gt; 0)
              {
                 
                  ret = material-&gt;Get(AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0), textureName);
  
                  std::string textureType = &quot;diffuse_&quot;;
                  std::string textureFileName = textureType + textureName.data;//Name Texture file 
              }
          }
      }
  </code></pre>
  <p>Thank you.</p>