Lines Matching refs:background_gamma
127 int need_expand, png_fixed_point background_gamma)
145 png_ptr->background_gamma = background_gamma;
157 int need_expand, double background_gamma)
160 need_expand, png_fixed(png_ptr, background_gamma, "png_set_background"));
374 png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */
1569 png_gamma_significant(png_ptr->background_gamma) != 0)
1627 g = png_reciprocal(png_ptr->background_gamma);
1628 gs = png_reciprocal2(png_ptr->background_gamma,
1736 g = png_reciprocal(png_ptr->background_gamma);
1737 gs = png_reciprocal2(png_ptr->background_gamma,
