Lines Matching refs:png_set_background
6211 * the above API). With png_set_background the alpha channel is never expanded
8248 /* png_set_background(png_structp, png_const_color_16p background_color,
8314 png_set_background(pp, &back, PNG_BACKGROUND_GAMMA_FILE, expand, 0);
9359 png_set_background(pp, &dp->background_color, dp->do_background,
9366 png_error(pp, "png_set_background not supported");
10268 /* Handle input alpha - png_set_background will cause the output
10877 /* Because, currently, png_set_background is always called with
