Lines Matching refs:screen_gamma

715    png_set_gamma(png_ptr, screen_gamma, output_gamma);
719    png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma,
822       png_set_alpha_mode(png_ptr, mode, screen_gamma);
824       png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
827 The screen_gamma value is the same as the argument to png_set_gamma; however,
829 file gamma default to 1/screen_gamma, so normally you don't need to call
897 component values, whatever screen_gamma you supply.  The
898 screen_gamma value is, however, used as a default for
916 the screen_gamma value.  Pixels with alpha less than 1.0
949        screen_gamma);
956        screen_gamma);
966        screen_gamma);
1993       png_set_gamma(png_ptr, screen_gamma, file_gamma);
1996       png_set_gamma(png_ptr, screen_gamma, 0.45455);
2127 will also update your palette with the correct screen_gamma and