old_red          1012 ext/gd/libgd/gd.c 	int old_color, old_red, old_green, old_blue;
old_red          1034 ext/gd/libgd/gd.c 						old_red = gdImageRed(im, old_color);
old_red          1038 ext/gd/libgd/gd.c 						p_red = (int) (((float) color_red * p_alpha) + ((float) old_red * old_alpha));