//https://gamedev.stackexchange.com/questions/92015/optimized-linear-to-srgb-glsl
vec3 srgb_to_linear(vec3 srgb) {
    bvec3 cutoff = lessThan(srgb, vec3(0.04045));
    vec3 higher = pow((srgb + vec3(0.055))/vec3(1.055), vec3(2.4));
    vec3 lower = srgb/vec3(12.92);

    return mix(higher, lower, cutoff);
}

vec3 linear_to_srgb(vec3 linear) {
    bvec3 cutoff = lessThan(linear, vec3(0.0031308));
    vec3 higher = vec3(1.055) * pow(linear, vec3(1.0 / 2.4)) - vec3(0.055);
    vec3 lower = linear * vec3(12.92);

    return mix(higher, lower, cutoff);
}