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struct _VERTEX
{
    D3DXVECTOR3 pos;     // vertex position
    D3DXVECTOR3 norm;    // vertex normal
    float tu;            // texture coordinates
    float tv;
} VERTEX,*LPVERTEX;

#define FVF_VERTEX    D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX1


  // lock the vertex buffer
    LPVERTEX pVerts;
    if (SUCCEEDED(texMesh->LockVertexBuffer(0,(BYTE **) &pVerts))) {

        // get vertex count
        int numVerts=texMesh->GetNumVertices();

        // loop through the vertices
        for (int i=0;i<numVerts;i++) {

            // calculate texture coordinates
            pVerts->tu=asinf(pVerts->norm.x)/D3DX_PI+0.5f;
            pVerts->tv=asinf(pVerts->norm.y)/D3DX_PI+0.5f;
            
            // go to next vertex
            pVerts++;   <-- Das verstehe ich nicht !!!
    }

        // unlock the vertex buffer
        texMesh->UnlockVertexBuffer();
    }                    

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const
  FVF_VERTEX = D3DFVF_XYZ or D3DFVF_NORMAL or D3DFVF_TEX1;

type
  PMeshVertex = ^TMeshVertex;
  TMeshVertex = packed record
    Pos: TD3DXVector3;
    Norm: TD3DXVector3;
    tu, tv: Single;
  end;

 var
  TempMesh: ID3DXMesh;
  pVerts: pMeshVertex;
  Loop: LongInt;


  if Succeeded(TempMesh.LockVertexBuffer(0, Pointer(pVerts))) then begin
    for Loop :=  0 to TempMesh.GetNumVertices do begin
      pVerts.tu := ArcSin(pVerts.Norm.x / Pi * 0.5);
      pVerts.tv := ArcSin(pVerts.Norm.y / Pi * 0.5);
        
     Hier fehlt nu irgendwie was :-)

    end;
  end;
  TempMesh.UnlockVertexBuffer;                    

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^                    

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     ^