//=============================================================================
  // Vertex.cpp by Frank Luna (C) 2005 All Rights Reserved.
  //=============================================================================
  
  include <Vertex.h>
  include <d3dUtil.h>
  
  // Initialize static variables.
  IDirect3DVertexDeclaration9* VertexPos::Decl = 0;
  IDirect3DVertexDeclaration9* VertexCol::Decl = 0;
  IDirect3DVertexDeclaration9* VertexPN::Decl  = 0;
  IDirect3DVertexDeclaration9* VertexPNT::Decl = 0;
  
  void InitAllVertexDeclarations()
  {
          //===============================================================
          // VertexPos
  
          D3DVERTEXELEMENT9 VertexPosElements[] = 
          {
                  {0, 0,  D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
                  D3DDECL_END()
          };        
          HR(gd3dDevice->CreateVertexDeclaration(VertexPosElements, &VertexPos::Decl));
  
          //===============================================================
          // VertexCol
  
          D3DVERTEXELEMENT9 VertexColElements[] = 
          {
                  {0, 0,  D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
                  {0, 12, D3DDECLTYPE_D3DCOLOR, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0},
                  D3DDECL_END()
          };        
          HR(gd3dDevice->CreateVertexDeclaration(VertexColElements, &VertexCol::Decl));
  
          //===============================================================
          // VertexPN
  
          D3DVERTEXELEMENT9 VertexPNElements[] = 
          {
                  {0, 0,  D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
                  {0, 12, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_NORMAL, 0},
                  D3DDECL_END()
          };        
          HR(gd3dDevice->CreateVertexDeclaration(VertexPNElements, &VertexPN::Decl));
  
          //===============================================================
          // VertexPNT
  
          D3DVERTEXELEMENT9 VertexPNTElements[] = 
          {
                  {0, 0,  D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0},
                  {0, 12, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_NORMAL, 0},
                  {0, 24, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0},
                  D3DDECL_END()
          };        
          HR(gd3dDevice->CreateVertexDeclaration(VertexPNTElements, &VertexPNT::Decl));
  }
  
  void DestroyAllVertexDeclarations()
  {
          ReleaseCOM(VertexPos::Decl);
          ReleaseCOM(VertexCol::Decl);
          ReleaseCOM(VertexPN::Decl);
          ReleaseCOM(VertexPNT::Decl);
  }