old_alpha        1012 ext/gd/libgd/gd.c 	float p_alpha, old_alpha;
old_alpha        1031 ext/gd/libgd/gd.c 					old_alpha = 1.0 - p_alpha;
old_alpha        1040 ext/gd/libgd/gd.c 						p_red = (int) (((float) color_red * p_alpha) + ((float) old_red * old_alpha));
old_alpha        1041 ext/gd/libgd/gd.c 						p_green = (int) (((float) color_green * p_alpha) + ((float) old_green * old_alpha));
old_alpha        1042 ext/gd/libgd/gd.c 						p_blue = (int) (((float) color_blue * p_alpha) + ((float) old_blue * old_alpha));