SDL: use E(X^2) - E(X)^2 for variance to reduce an optimizer pass
[supertux.git] / src / video / gl_renderer.cpp
2007-08-22 Tim GoyaImproved SDL_Surface optimizer to handle images that...
2007-08-18 Tim GoyaPrecalculated renderer specific surface data, better...
2007-08-15 Tim GoyaRefactored video/ subsystem to make adding other method...