Hidden surface removal using software z-buffer (depth buffer)... It is not exactly working perfectly.. as you can see there are some holes made.. not sure why. Maybe because i am using floating point to store the depth values. I am going to try with double. If the problem exists then something is wronge with my algo (logical error!!). Hope i can fix this today and then i can concentrate on phong model.
:) There is now no lines that was present previously... i fixed it.
The box looks like they are rendered inside out. Thats because there is no perspective projection.