public static extern Result SubmitMesh(
     IntPtr ctx,
     float[] vertices,
     int verticesCount,
     int[] indices,
     int indicesCount,
     AcousticsMaterial material,
     ref int geometryId);
 public static extern Result GetTransmissionFactor(
     AcousticsMaterial material,
     ref float transmissionFactor);
 public static extern Result GetScatteringFactor(
     AcousticsMaterial material,
     ref float scatteringFactor);
 public static extern Result GetAbsorptionFactor(
     AcousticsMaterial material,
     float[] absorptionFactor);