Lines Matching refs:gamma
163 * dithering, filling, setting background, and doing gamma
233 /* Some suggestions as to how to get a screen gamma value
235 * Note that screen gamma is the display_exponent, which includes
238 if (/* We have a user-defined screen gamma value */)
242 /* This is one way that applications share the same screen gamma value */
255 /* Tell libpng to handle the gamma conversion for you. The final call
258 * your application support gamma correction.
337 /* Optional call to gamma correct and add the background to the palette
667 /* Optional gamma chunk is strongly suggested if you have any guess
668 * as to the correct gamma of the image.
670 png_set_gAMA(png_ptr, info_ptr, gamma);
