enable blending

src/main.cc

@@ -16,10 +16,8 @@ bool init(void)
 {
     glClearColor (0.0, 0.0, 0.0, 0.0);
     glEnable(GL_CULL_FACE);
-#if 0
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-#endif
     glViewport(0, 0, WIDTH, HEIGHT);
     try
     {