Lines Matching refs:png_set_gamma

712 header.  In earlier versions png_set_gamma() existed but behaved incorrectly if
725    png_set_gamma(png_ptr, screen_gamma, output_gamma);
766 encoding if it has no gAMA chunk and if png_set_gamma() has not been called
776 encoding will be overridden if png_set_gamma() is called - the results may be
834       png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
837 The screen_gamma value is the same as the argument to png_set_gamma; however,
840 png_set_gamma.  If you need different defaults call png_set_gamma() before
911 If you call png_set_gamma() after png_set_alpha_mode() you
1070 is easier than achieving the same effect with png_set_gamma.  You must use
1239 provided by an earlier call to png_set_gamma or png_set_alpha_mode.
2022 If you didn't call png_set_gamma() before reading the file header, for example
2028 supported then you can certainly do png_set_gamma() before reading the PNG
2037       png_set_gamma(png_ptr, screen_gamma, file_gamma);
2040       png_set_gamma(png_ptr, screen_gamma, 0.45455);