-#define use_colorspace_gamma() App::use_colorspace_gamma
-#define colorspace_gamma() (2.2f)
-#define gamma_in(x) ((x>=0)?pow((float)x,1.0f/colorspace_gamma()):-pow((float)-x,1.0f/colorspace_gamma()))
-#define gamma_out(x) ((x>=0)?pow((float)x,colorspace_gamma()):-pow((float)-x,colorspace_gamma()))