opengl八叉树场景组织。
场景组织的有效方法，简单易行，可以快速的排除无须显示的对象-opengl Octree scene organizations. Scenes of effective method is simple, rapid exclusion can not show the object
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001051s ]
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:0.071671s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001503s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001354s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001855s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003154s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000814s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003626s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013870s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001038s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 154325 [ RunTime:0.013034s ]
