glm::mod() behaves differently for int and float with negative values

[sponji]

Seems like glm::mod<int>() gives wrong results for negative values. For example, glm::mod<int>(-1, 10) gives -1, but glm::mod<float>(-1.0f, 10.0f) gives 9.0f.

[Groovounet]

Hi,

The source of the issue is the rounding of 'mod' with GLSL which can't be translated into integers.

As a return, I removed the integer overload and added a fmod overload in glm/gtx_common.hpp which rounding supports float and int flavors.

This version is based on HLSL version of fmod. http://stackoverflow.com/questions/7610631/glsl-mod-vs-hlsl-fmod

This work has been done on master branch for GLM 0.9.7 release.

Thanks,
Christophe