function updateDrawCommand(drawCommand, modelMatrix, transformToRoot) {
  drawCommand.modelMatrix = Matrix4.multiplyTransformation(
    modelMatrix,
    transformToRoot,
    drawCommand.modelMatrix,
  );
  drawCommand.cullFace = ModelUtility.getCullFace(
    drawCommand.modelMatrix,
    drawCommand.primitiveType,
  );
}
Update the modelMatrix and cullFrace of the given draw command.

@private