pcontribution    2501 ext/gd/libgd/gd.c 					double pcontribution;
pcontribution    2514 ext/gd/libgd/gd.c 					pcontribution = xportion * yportion;
pcontribution    2517 ext/gd/libgd/gd.c 					alpha_factor = ((gdAlphaMax - gdTrueColorGetAlpha(p))) * pcontribution;
pcontribution    2521 ext/gd/libgd/gd.c 					alpha += gdTrueColorGetAlpha (p) * pcontribution;
pcontribution    2523 ext/gd/libgd/gd.c 					contrib_sum += pcontribution;