object outline display confusion

[tmonk22]

When implementing the object outline, set the depth template format in windowsTrait, turn on the template buffer, set the template parameters when rendering for the first time, and then use wireframe mode to render for the second time, set the template parameters, and implement the object outline. It is normal when viewed in RenderDoc, but when viewed in the window, the border is a bit intermittent, as if some pixels are not refreshed and covered.

struct SetPipelineStates : public vsg::Visitor {
  float lineWidth = 10.0f;
  VkPolygonMode polygonMode = VK_POLYGON_MODE_LINE;
  SetPipelineStates() {}
  void apply(vsg::Object& object) override { object.traverse(*this); }
  void apply(vsg::BindGraphicsPipeline& bgp) override {
    for (auto& it : bgp.pipeline->pipelineStates) {
      it->accept(*this);
    }
  }
  void apply(vsg::RasterizationState& rs) {
    rs.lineWidth = lineWidth;
    // rs.cullMode = VK_CULL_MODE_NONE;
    rs.polygonMode = polygonMode;
  }
};
void setDepthStencilState(
    vsg::ref_ptr<vsg::Node> node,
    std::function<void(vsg::DepthStencilState&)> callback) {
  struct SetStates : public vsg::Visitor {
    std::function<void(vsg::DepthStencilState&)> callback;
    void apply(vsg::Object& object) override { object.traverse(*this); }
    void apply(vsg::BindGraphicsPipeline& bgp) override {
      for (auto& it : bgp.pipeline->pipelineStates) {
        it->accept(*this);
      }
    }
    void apply(vsg::DepthStencilState& dss) override { callback(dss); }
  };
  SetStates setStates;
  setStates.callback = callback;
  node->accept(setStates);
}
void hightlight(vsg::ref_ptr<vsg::Group> group) {
  auto boxNode = createBox(vsg::vec3(0, 0, 0), vsg::vec4(1, 1, 0, 1));
  setDepthStencilState(boxNode, [](vsg::DepthStencilState& dss) {
    dss.stencilTestEnable = true;
    dss.front.compareOp = VK_COMPARE_OP_ALWAYS;
    dss.front.failOp = VK_STENCIL_OP_REPLACE;
    dss.front.passOp = VK_STENCIL_OP_REPLACE;
    dss.front.depthFailOp = VK_STENCIL_OP_REPLACE;
    dss.front.compareMask = 0xff;
    dss.front.writeMask = 0xff;
    dss.front.reference = 1;
  });

  auto boxNode2 = createBox(vsg::vec3(0, 0, 0), vsg::vec4(1, 0, 0, 1));
  vsg::visit<SetPipelineStates>(boxNode2);
  setDepthStencilState(boxNode2, [](vsg::DepthStencilState& dss) {
    dss.stencilTestEnable = true;
    dss.front.compareOp = VK_COMPARE_OP_NOT_EQUAL;
    dss.front.failOp = VK_STENCIL_OP_KEEP;
    dss.front.passOp = VK_STENCIL_OP_REPLACE;
    dss.front.depthFailOp = VK_STENCIL_OP_KEEP;
    dss.front.reference = 1;
    dss.front.compareMask = 0xff;
    dss.front.writeMask = 0xff;
  });

  group->addChild(boxNode);
  group->addChild(boxNode2);
}

  auto windowTraits = vsg::WindowTraits::create();
  windowTraits->depthFormat = VK_FORMAT_D24_UNORM_S8_UINT;