FThreadSafeSharedStringPtr Declaration
Using SharedPtr so we can hand off lifetime ownership to FShaderCompilerEnvironment::IncludeVirtualPathToExternalContentsMap when invalidating this cache.
FThreadSafeSharedStringPtr Declaration
Using SharedPtr so we can hand off lifetime ownership to FShaderCompilerEnvironment::IncludeVirtualPathToExternalContentsMap when invalidating this cache.