Lines Matching refs:screen_gamma

724    png_set_gamma(png_ptr, screen_gamma, output_gamma);
728    png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma,
831       png_set_alpha_mode(png_ptr, mode, screen_gamma);
833       png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
836 The screen_gamma value is the same as the argument to png_set_gamma; however,
838 file gamma default to 1/screen_gamma, so normally you don't need to call
906 component values, whatever screen_gamma you supply.  The
907 screen_gamma value is, however, used as a default for
925 the screen_gamma value.  Pixels with alpha less than 1.0
958        screen_gamma);
965        screen_gamma);
975        screen_gamma);
2036       png_set_gamma(png_ptr, screen_gamma, file_gamma);
2039       png_set_gamma(png_ptr, screen_gamma, 0.45455);
2170 will also update your palette with the correct screen_gamma and