iPhone从图片创建Bitmap图片写入设备源代码

TheGLSpritesampleapplicationshowshowtocreateatexturefromanimage.Bylookingatthecode,you'lllearnhowtouseCoreGraphicstocreateabitmapcontextanddrawanimageintothecontext.You'llthenseehowtouseOpenGLEStocreateatexturefromtheimagedata.