参考:
http://www.cocoachina.com/ios/20140812/9363.html
http://www.cocoachina.com/ios/20140925/9756.html
GPUImage资料github:
https://github.com/BradLarson/GPUImage
参考:
http://www.cocoachina.com/ios/20140812/9363.html
http://www.cocoachina.com/ios/20140925/9756.html
GPUImage资料github:
https://github.com/BradLarson/GPUImage