index buffer for a cube

I don''t know how to construct an index buffer for a cube defined with these vertices: 7---8 /| /| 3-5-4-6 |/ |/ 1---2 //struct BOX3D {D3DXVECTOR4 position; DWORD color;}; BOX3D *bbox; bbox=new BOX3D[8]; //pMin and pMax contain box dimensions bbox[0].position=D3DXVECTOR4(pMin.x, pMin.y, pMin.z, 1.0f); bbox[1].position=D3DXVECTOR4(pMax.x, pMin.y, pMin.z, 1.0f); bbox[2].position=D3DXVECTOR4(pMin.x, pMax.y, pMin.z, 1.0f); bbox[3].position=D3DXVECTOR4(pMax.x, pMax.y, pMin.z, 1.0f); bbox[4].position=D3DXVECTOR4(pMin.x, pMin.y, pMax.z, 1.0f); bbox[5].position=D3DXVECTOR4(pMax.x, pMin.y, pMax.z, 1.0f); bbox[6].position=D3DXVECTOR4(pMin.x, pMax.y, pMax.z, 1.0f); bbox[7].position=D3DXVECTOR4(pMax.x, pMax.y, pMax.z, 1.0f); for (int k=0;k<8;k++) bbox[k].color=0xffff0000; //how to fill index buffer??? WORD *pIndices; pIndices=new WORD[??]; Thanks in advance

I guess your points are ok if you''re not using any normals.
But as soon as you want to use normal you need more points then that. Here is the points with normals and index buffer. Render it as triangle list. Hope it helps..
p - position vector
n - normal vector


    // front vertices
    m_pvObjectVertices[0].p = D3DXVECTOR3(-1.0f, -1.0f, -1.0f);
    m_pvObjectVertices[1].p = D3DXVECTOR3(-1.0f, 1.0f, -1.0f);
    m_pvObjectVertices[2].p = D3DXVECTOR3(1.0f, 1.0f, -1.0f);
    m_pvObjectVertices[3].p = D3DXVECTOR3(1.0f, -1.0f, -1.0f);
    // back vertices
    m_pvObjectVertices[4].p = D3DXVECTOR3(-1.0f, -1.0f, 1.0f);
    m_pvObjectVertices[5].p = D3DXVECTOR3(-1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[6].p = D3DXVECTOR3(1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[7].p = D3DXVECTOR3(1.0f, -1.0f, 1.0f);
    // top vertices
    m_pvObjectVertices[8].p = D3DXVECTOR3(-1.0f, 1.0f, -1.0f);
    m_pvObjectVertices[9].p = D3DXVECTOR3(-1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[10].p = D3DXVECTOR3(1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[11].p = D3DXVECTOR3(1.0f, 1.0f, -1.0f);
    // bottom vertices
    m_pvObjectVertices[12].p = D3DXVECTOR3(-1.0f, -1.0f, -1.0f);
    m_pvObjectVertices[13].p = D3DXVECTOR3(-1.0f, -1.0f, 1.0f);
    m_pvObjectVertices[14].p = D3DXVECTOR3(1.0f, -1.0f, 1.0f);
    m_pvObjectVertices[15].p = D3DXVECTOR3(1.0f, -1.0f, -1.0f);
    // left vertices
    m_pvObjectVertices[16].p = D3DXVECTOR3(-1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[17].p = D3DXVECTOR3(-1.0f, 1.0f, -1.0f);
    m_pvObjectVertices[18].p = D3DXVECTOR3(-1.0f, -1.0f, -1.0f);
    m_pvObjectVertices[19].p = D3DXVECTOR3(-1.0f, -1.0f, 1.0f);
    // right vertices
    m_pvObjectVertices[20].p = D3DXVECTOR3(1.0f, 1.0f, 1.0f);
    m_pvObjectVertices[21].p = D3DXVECTOR3(1.0f, 1.0f, -1.0f);
    m_pvObjectVertices[22].p = D3DXVECTOR3(1.0f, -1.0f, -1.0f);
    m_pvObjectVertices[23].p = D3DXVECTOR3(1.0f, -1.0f, 1.0f);

    // top normals
    m_pvObjectVertices[0].n = D3DXVECTOR3(0.0f, 0.0f, -1.0f);
    m_pvObjectVertices[1].n = D3DXVECTOR3(0.0f, 0.0f, -1.0f);
    m_pvObjectVertices[2].n = D3DXVECTOR3(0.0f, 0.0f, -1.0f);
    m_pvObjectVertices[3].n = D3DXVECTOR3(0.0f, 0.0f, -1.0f);
    // bottom normals
    m_pvObjectVertices[4].n = D3DXVECTOR3(0.0f, 0.0f,  1.0f);
    m_pvObjectVertices[5].n = D3DXVECTOR3(0.0f, 0.0f,  1.0f);
    m_pvObjectVertices[6].n = D3DXVECTOR3(0.0f, 0.0f,  1.0f);
    m_pvObjectVertices[7].n = D3DXVECTOR3(0.0f, 0.0f,  1.0f);
    // top normals
    m_pvObjectVertices[8].n = D3DXVECTOR3(0.0f, 1.0f,  0.0f);
    m_pvObjectVertices[9].n = D3DXVECTOR3(0.0f, 1.0f,  0.0f);
    m_pvObjectVertices[10].n = D3DXVECTOR3(0.0f, 1.0f,  0.0f);
    m_pvObjectVertices[11].n = D3DXVECTOR3(0.0f, 1.0f,  0.0f);
    // bottom normals
    m_pvObjectVertices[12].n = D3DXVECTOR3(0.0f, -1.0f,  0.0f);
    m_pvObjectVertices[13].n = D3DXVECTOR3(0.0f, -1.0f,  0.0f);
    m_pvObjectVertices[14].n = D3DXVECTOR3(0.0f, -1.0f,  0.0f);
    m_pvObjectVertices[15].n = D3DXVECTOR3(0.0f, -1.0f,  0.0f);
    // left normals
    m_pvObjectVertices[16].n = D3DXVECTOR3(-1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[17].n = D3DXVECTOR3(-1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[18].n = D3DXVECTOR3(-1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[19].n = D3DXVECTOR3(-1.0f, 0.0f,  0.0f);
    // right normals
    m_pvObjectVertices[20].n = D3DXVECTOR3(1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[21].n = D3DXVECTOR3(1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[22].n = D3DXVECTOR3(1.0f, 0.0f,  0.0f);
    m_pvObjectVertices[23].n = D3DXVECTOR3(1.0f, 0.0f,  0.0f);

    m_pwObjectIndices[0] = 0;
    m_pwObjectIndices[1] = 1;
    m_pwObjectIndices[2] = 2;
    m_pwObjectIndices[3] = 0;
    m_pwObjectIndices[4] = 2;
    m_pwObjectIndices[5] = 3;

    m_pwObjectIndices[6] = 6;
    m_pwObjectIndices[7] = 5;
    m_pwObjectIndices[8] = 4;
    m_pwObjectIndices[9] = 7;
    m_pwObjectIndices[10] = 6;
    m_pwObjectIndices[11] = 4;

    m_pwObjectIndices[12] = 8;
    m_pwObjectIndices[13] = 9;
    m_pwObjectIndices[14] = 10;
    m_pwObjectIndices[15] = 8;
    m_pwObjectIndices[16] = 10;
    m_pwObjectIndices[17] = 11;

    m_pwObjectIndices[18] = 14;
    m_pwObjectIndices[19] = 13;
    m_pwObjectIndices[20] = 12;
    m_pwObjectIndices[21] = 15;
    m_pwObjectIndices[22] = 14;
    m_pwObjectIndices[23] = 12;

    m_pwObjectIndices[24] = 16;
    m_pwObjectIndices[25] = 17;
    m_pwObjectIndices[26] = 18;
    m_pwObjectIndices[27] = 16;
    m_pwObjectIndices[28] = 18;
    m_pwObjectIndices[29] = 19;

    m_pwObjectIndices[30] = 22;
    m_pwObjectIndices[31] = 21;
    m_pwObjectIndices[32] = 20;
    m_pwObjectIndices[33] = 23;
    m_pwObjectIndices[34] = 22;
    m_pwObjectIndices[35] = 20;

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