iPad2, problem with varying value

HI,





I have a specific pb with my iPad2 when i use a “big” varying value.





For example, a value ranging from 10005 to 10000, the variation is smooth on iPad1, while the value iPad2 passes abruptly 10005 to 10000.





Here’s a link to an archive of a Xcode 4 project based on the opengl template which demonstrates the problem:





http://www.weather4d.com/sites/default/files/SampleTest.tar.gz





Thank in advance.

The good link:





http://www.weather4d.com/sites/default/files/SampleTest.tar.gz