- GLuint tex0 = load_texture("test1499.png", &width1, &height1);
- GLuint tex1 = load_texture("test1500.png", &width2, &height2);
+ GLuint tex0 = load_texture(argc >= 2 ? argv[1] : "test1499.png", &width1, &height1);
+ GLuint tex1 = load_texture(argc >= 3 ? argv[2] : "test1500.png", &width2, &height2);