Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1

Shader symbols are not generated for the Windows platform.

Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine BaseEngine.ini.

The licensee has noted that "When TPlatformShaderSymbolData is deserialized, SymbolData.GetFilename() returns empty on Windows."

1. Add r.Shaders.Symbols=1 to the [ShaderCompiler] section of a projects DefaultEngine.ini
2. Cook the project for the Windows platform
3. Observe the log message output "LogShaderSymbolExport: Display: Shader symbol export enabled. Output directory: <Project Location>/Saved/ShaderSymbols/<Shader Format>"
4. Wait for the cook to finish
5. Navigate to the file location described in the output log
6. Observe the empty folder