Unreal Engine Knowledge Graph MCP Server

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  "triples": [
    {
      "subject": "自动实例化",
      "predicate": "减少",
      "object": "绘制调用",
      "context": "自动实例化通过将多个绘制调用组合成一个实例化绘制调用，显著减少CPU开销，提高渲染效率",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "绘制调用",
      "predicate": "包含",
      "object": "图形API状态",
      "context": "绘制调用包含顶点缓冲区、统一缓冲区、着色器等图形API状态，这些状态需要兼容才能进行实例化合并",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "自动实例化",
      "predicate": "依赖",
      "object": "GPU场景支持",
      "context": "自动实例化需要启用r.Mobile.SupportGPUScene=1来支持GPU场景，这是实现实例化的基础条件",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "光照贴图",
      "predicate": "支持",
      "object": "自动实例化",
      "context": "光照贴图的数据通道专为支持实例化设计，而间接光照缓存会阻止实例化合并",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "静态网格体组件",
      "predicate": "使用",
      "object": "缓存的绘制调用",
      "context": "静态网格体组件使用缓存的绘制调用进行渲染，其兼容性由FCachedMeshDrawCommandInfo::StateBucketId决定",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "材质",
      "predicate": "影响",
      "object": "实例化兼容性",
      "context": "材质的混合模式、着色模型和参数会影响PipelineId和DynamicInstancingHash，从而决定实例化兼容性",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "自动实例化",
      "predicate": "产生",
      "object": "CPU开销",
      "context": "虽然自动实例化减少绘制调用，但分类和组合绘制调用仍会产生一定的CPU开销，需权衡使用",
      "direction": "unidirectional",
      "confidence": 0.8
    },
    {
      "subject": "RenderDoc",
      "predicate": "用于",
      "object": "验证实例化效果",
      "context": "RenderDoc可以捕捉和显示实例化合并后的绘制调用，帮助开发者验证自动实例化的实际效果",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "动态实例化",
      "predicate": "不支持",
      "object": "未缓存的绘制调用",
      "context": "从UE4.25开始，未缓存的绘制调用（如骨骼网格组件）不支持自动实例化功能",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "实例化绘制调用",
      "predicate": "要求",
      "object": "相同静态网格体",
      "context": "要实现实例化合并，所有对象必须引用相同的静态网格体，这是实例化的基本要求之一",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "统一缓冲区",
      "predicate": "阻止",
      "object": "实例化合并",
      "context": "间接光照缓存使用唯一的统一缓冲区传递光照数据，这会阻止绘制调用的实例化合并",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "自动实例化",
      "predicate": "发生在",
      "object": "视锥剔除之后",
      "context": "自动实例化在视锥剔除阶段之后进行，只合并屏幕上可见的内容，节省计算资源",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "FMeshDrawCommand",
      "predicate": "计算",
      "object": "DynamicInstancingHash",
      "context": "FMeshDrawCommand::GetDynamicInstancingHash函数计算哈希值，决定绘制调用是否可实例化合并",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "r.MeshDrawCommands.LogDynamicInstancingStats",
      "predicate": "显示",
      "object": "实例化效果",
      "context": "该CVar可以打印绘制调用减少的因数，帮助开发者评估自动实例化的效果",
      "direction": "unidirectional",
      "confidence": 0.9
    },
    {
      "subject": "自动实例化",
      "predicate": "适用于",
      "object": "Oculus项目",
      "context": "本文档专门介绍在Oculus项目中实现自动实例化的方法和注意事项",
      "direction": "unidirectional",
      "confidence": 0.9
    }
  ],
  "timestamp": "2025-06-15T18:10:40.417Z",
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