func CalculateGammaRamp(gamma float32, ramp []uint16) {
if len(ramp) < 256 {
panic("len(ramp) must be > 256")
}
C.SDL_CalculateGammaRamp(C.float(gamma), (*C.Uint16)(&ramp[0]))
}
// CalculateGammaRamp calculates a 256 entry gamma ramp for a gamma value.
// CalculateGammaRamp (https://wiki.libsdl.org/SDL_CalculateGammaRamp)
func CalculateGammaRamp(gamma float32, ramp *[256]uint16) {
C.SDL_CalculateGammaRamp(C.float(gamma), (*C.Uint16)(unsafe.Pointer(&ramp[0])))
}