D3DXComputeNormalMap Converts a height map into a normal map. The (x,y,z) components of each normal are mapped to the (r,g,b) channels of the output texture. HRESULT D3DXComputeNormalMap( LPDIRECT3DTEXTURE8 pTexture, LPDIRECT3DTEXTURE8 pSrcTexture, CONST PALETTEENTRY* pSrcPalette, DWORD Flags, DWORD Channel, FLOAT Amplitude ); Has anybody used this function? How can it be useful? What exacly it does? (I unterstand it that way that it comutes optimized normals from texture, any ideas?). I''m making terain generator & I think it could be useful. Greetz Lemmy