Doctor Who, I wrote a complete 3D renderer for a class using just the SetPixel primitive in -- get this -- GDI. No DirectX, no OpenGL, nada. I handled rotations, translations, scales, phong and gouraud shading, 3D formats, etc.
Of course it was all done in software, so it was dang slow, but that doesn't mean it wasn't "true" 3D. And what is "true" 3D anyway? You still end up projecting your models onto a 2D plane to display them.
Of course it was all done in software, so it was dang slow, but that doesn't mean it wasn't "true" 3D. And what is "true" 3D anyway? You still end up projecting your models onto a 2D plane to display them.