Lines Matching full:png_gamma
1335 * that PNG_GAMMA just refers to the file->screen correction. Alpha
1343 png_ptr->transformations |= PNG_GAMMA;
1346 png_ptr->transformations &= ~PNG_GAMMA;
1360 * 6) PNG_GAMMA
1550 * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that
1551 * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the
1560 if ((png_ptr->transformations & PNG_GAMMA) != 0 ||
1712 png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA);
1827 PNG_GAMMA;
1976 /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4),
4836 if ((png_ptr->transformations & PNG_GAMMA) != 0 &&
