void DiffuseCubeDemo::buildVertexBuffer()
{
// Obtain a pointer to a new vertex buffer.
HR(gd3dDevice->CreateVertexBuffer(24 * sizeof(VertexPN), D3DUSAGE_WRITEONLY,
0, D3DPOOL_MANAGED, &mVB, 0));
// Now lock it to obtain a pointer to its internal data, and write the
// cube's vertex data.
// NOTE: One key point to note is that with normals, we no longer have eight
// unique vertices for the cube. This is because, even though the vertices
// share spatial data, they do not share normal data.
VertexPN* v = 0;
HR(mVB->Lock(0, 0, (void**)&v, 0));
// fill in the front face vertex data
v[0] = VertexPN(-1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f);
v[1] = VertexPN(-1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f);
v[2] = VertexPN( 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f);
v[3] = VertexPN( 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f);
// fill in the back face vertex data
v[4] = VertexPN(-1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[5] = VertexPN( 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[6] = VertexPN( 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[7] = VertexPN(-1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f);
// fill in the top face vertex data
v[8] = VertexPN(-1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f);
v[9] = VertexPN(-1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f);
v[10] = VertexPN( 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f);
v[11] = VertexPN( 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f);
// fill in the bottom face vertex data
v[12] = VertexPN(-1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f);
v[13] = VertexPN( 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f);
v[14] = VertexPN( 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f);
v[15] = VertexPN(-1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f);
// fill in the left face vertex data
v[16] = VertexPN(-1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f);
v[17] = VertexPN(-1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f);
v[18] = VertexPN(-1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f);
v[19] = VertexPN(-1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f);
// fill in the right face vertex data
v[20] = VertexPN( 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f);
v[21] = VertexPN( 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f);
v[22] = VertexPN( 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f);
v[23] = VertexPN( 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f);
HR(mVB->Unlock());
}
void DiffusePyramidDemo::buildVertexBuffer()
{
// Obtain a pointer to a new vertex buffer.
HR(gd3dDevice->CreateVertexBuffer(12 * sizeof(VertexPN), D3DUSAGE_WRITEONLY,
0, D3DPOOL_MANAGED, &mVB, 0));
// Now lock it to obtain a pointer to its internal data, and write the
// cube's vertex data. Note also that in this demo we don't use an index
// buffer.
VertexPN* v = 0;
HR(mVB->Lock(0, 0, (void**)&v, 0));
// front face
v[0] = VertexPN(-1.0f, 0.0f, -1.0f, 0.0f, 0.707f, -0.707f);
v[1] = VertexPN( 0.0f, 1.0f, 0.0f, 0.0f, 0.707f, -0.707f);
v[2] = VertexPN( 1.0f, 0.0f, -1.0f, 0.0f, 0.707f, -0.707f);
// left face
v[3] = VertexPN(-1.0f, 0.0f, 1.0f, -0.707f, 0.707f, 0.0f);
v[4] = VertexPN( 0.0f, 1.0f, 0.0f, -0.707f, 0.707f, 0.0f);
v[5] = VertexPN(-1.0f, 0.0f, -1.0f, -0.707f, 0.707f, 0.0f);
// right face
v[6] = VertexPN( 1.0f, 0.0f, -1.0f, 0.707f, 0.707f, 0.0f);
v[7] = VertexPN( 0.0f, 1.0f, 0.0f, 0.707f, 0.707f, 0.0f);
v[8] = VertexPN( 1.0f, 0.0f, 1.0f, 0.707f, 0.707f, 0.0f);
// back face
v[9] = VertexPN( 1.0f, 0.0f, 1.0f, 0.0f, 0.707f, 0.707f);
v[10] = VertexPN( 0.0f, 1.0f, 0.0f, 0.0f, 0.707f, 0.707f);
v[11] = VertexPN(-1.0f, 0.0f, 1.0f, 0.0f, 0.707f, 0.707f);
HR(mVB->Unlock());
}
