具体操作方法在运行后可见。主要特点是可以在程序运行时改变漫反射光各种颜色成分的值来获得不同的光源色，从而直接观察到效果。这是Frank D. Luna的《Introduction to 3D Game Programming with DirectX 9.0c ---- A Shader Approach》第10章的习题第6题的解答。代码步骤比较详细，注释比较多。文档的使用方法参见压缩包内的ReadMe.txt文件。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001768s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.093049s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001261s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001928s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001409s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003632s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001094s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003302s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014527s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001377s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 327519 [ RunTime:0.001429s ]
