png_write_image   720 ext/gd/libgd/gd_png.c 		png_write_image(png_ptr, row_pointers);
png_write_image   739 ext/gd/libgd/gd_png.c 			png_write_image(png_ptr, row_pointers);
png_write_image   748 ext/gd/libgd/gd_png.c 			png_write_image(png_ptr, im->pixels);