使用F1~F4控制转换灰度的方式，F5为增加图象的对比度。图像为一花的3D茶壶-F1 ~ F4 control the use of gray-way conversion, F5 to increase the contrast of images. Image is a 3D flower pot

通过D3DX实现一个蓝色的水壶，按F2,F3,F5进行一系列操作-Press F2, F3, F5 series of operations by a blue kettle D3DX