Deferred Renderer Use

g_deferredRenderer->Begin();


  if( g_camera )
  {
    g_device->SetTransform( D3DTS_VIEW, &g_camera->view );
    g_device->SetTransform( D3DTS_PROJECTION, &g_camera->projection );

    UpdateCamera( g_camera->base );

    BuildFrustum( g_camera );
  }

  g_device->SetVertexDeclaration( g_meshVertexDeclaration );

  // precalculations
  for( size_t i = 0; i < g_nodes.size(); i++ )
  {
    SceneNode * node = g_nodes.at( i );

    CalculateGlobalTransform( node );
  }

  // render meshes into G-Buffer
  if( g_camera )
  {
    for( auto groupIterator = g_meshes.begin(); groupIterator != g_meshes.end(); ++groupIterator )
    {
      IDirect3DTexture9 * texture = groupIterator->first;
      auto & meshes = groupIterator->second;

      if( meshes.size() == 0 )
        continue;

      // bind diffuse texture
      g_device->SetTexture( 0, texture );

      for( auto meshIterator = meshes.begin(); meshIterator != meshes.end(); ++meshIterator )
      {
        Mesh * mesh = *meshIterator;

        g_deferredRenderer->RenderMesh( mesh );
      }
    }
  }

  g_deferredRenderer->End();

  g_device->EndScene();
  g_device->Present( 0, 0, 0, 0 );