Lines Matching refs:PNG_GAMMA
1300 * that PNG_GAMMA just refers to the file->screen correction. Alpha
1308 png_ptr->transformations |= PNG_GAMMA;
1311 png_ptr->transformations &= ~PNG_GAMMA;
1325 * 6) PNG_GAMMA
1507 * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that
1508 * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the
1517 if ((png_ptr->transformations & PNG_GAMMA)
1670 png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA);
1784 png_ptr->transformations &= ~PNG_GAMMA;
1927 /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4),
2208 if ((png_ptr->transformations & PNG_GAMMA) &&
