// If nothing has changed, then don't recompute the tables
if(gamma_r==r && gamma_g==g && gamma_b==b && black_level==black && red_blue_level==red_blue)
return;
// If nothing has changed, then don't recompute the tables
if(gamma_r==r && gamma_g==g && gamma_b==b && black_level==black && red_blue_level==red_blue)
return;