directx的循序渐近编程，从简单的绘制基本的几何图形到光照、材质、纹理、模型等编程。-DirectX the orderly and gradual program, from simple geometric shapes drawn to the basic light, material, texture, Programming model.

牛人写的关于directx9的电子书，从基本的几何讲起，一步一步引导你进入directx9的世界-Directx9 cattle were written on the book, from basic geometric talk, step by step guide you into a world directx9