Lines Matching refs:gamma
350 * quantizing, filling, setting background, and doing gamma
427 /* Some suggestions as to how to get a screen gamma value
429 * Note that screen gamma is the display_exponent, which includes
432 if (/* We have a user-defined screen gamma value */)
436 /* This is one way that applications share the same screen gamma value */
449 /* Tell libpng to handle the gamma conversion for you. The final call
452 * your application support gamma correction.
538 /* Optional call to gamma correct and add the background to the palette
874 /* Optional gamma chunk is strongly suggested if you have any guess
875 * as to the correct gamma of the image.
877 png_set_gAMA(png_ptr, info_ptr, gamma);
