text: #pragma once
  #include "OpenGL/OpenGLGraphicsManager.hpp"
  #include "OpenGL/OpenGLPipelineStateManager.hpp"
  
  namespace My {
  GraphicsManager* g_pGraphicsManager =
      static_cast<GraphicsManager*>(new OpenGLGraphicsManager);
  IPipelineStateManager* g_pPipelineStateManager =
      static_cast<IPipelineStateManager*>(new OpenGLPipelineStateManager);
  }  // namespace My
  