使用libGDX

Question

我正在使用libGDX用Java编写3D游戏。在我的游戏中，有一个房间的模型实例，他的墙壁只是矩形。我正在尝试添加“弹孔”效果，当玩家射击时，“弹孔”只是一种出现在墙上的纹理。我试图弄清楚实现它的最佳方法是什么？显而易见的方法是创建一个模型实例，该实例由具有每个弹孔的孔纹理的单个矩形构建-但是这种方式将对每个孔进行绘制调用，而不是性能方面的AFAIK。

我创建墙的一段代码：

 Texture wallTexture = new Texture(Gdx.files.internal("wall.png"));
    wallTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);
    Material wallMaterial = new Material(TextureAttribute.createDiffuse(wallTexture));
    MeshPartBuilder meshBuilder = modelBuilder.part("walls", GL20.GL_TRIANGLES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal |
                    VertexAttributes.Usage.TextureCoordinates, wallMaterial);
    meshBuilder.setUVRange(0, 0, C.ROOM_SIZE, 3);
    corner00.set(C.ROOM_SIZE, 0, 0);
    corner10.set(0, 0, 0);
    corner11.set(0, 0, 6);
    corner01.set(C.ROOM_SIZE, 0, 6);
    normal.set(0, 1, 0);
    line1000.setNormalDirection(auxVector2.set(0, 1).angle());
    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);
    corner00.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);
    corner10.set(C.ROOM_SIZE, 0, 0);
    corner11.set(C.ROOM_SIZE, 0, 6);
    corner01.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);
    normal.set(-1, 0, 0);
    line1110.setNormalDirection(auxVector2.set(-1, 0).angle());
    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);
    corner00.set(0, C.ROOM_SIZE, 0);
    corner10.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);
    corner11.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);
    corner01.set(0, C.ROOM_SIZE, 6);
    normal.set(0, -1, 0);
    line0111.setNormalDirection(auxVector2.set(0, -1).angle());
    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);
    corner00.set(0, 0, 0);
    corner10.set(0, C.ROOM_SIZE, 0);
    corner11.set(0, C.ROOM_SIZE, 6);
    corner01.set(0, 0, 6);
    normal.set(1, 0, 0);
    line0001.setNormalDirection(auxVector2.set(1, 0).angle());
    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);
    Model levelModel = modelBuilder.end();
    levelModelInstance = new ModelInstance(levelModel);

此部分在加载关卡时仅出现一次。弹孔应该出现在游戏中。