{
  "case": "C08-N04",
  "passed": true,
  "python": "3.12.4",
  "playwright": "1.58.0",
  "browser": "145.0.7632.6",
  "backend": "Chromium headless；ANGLE SwiftShader启动参数；WebGL实际renderer见题内结果",
  "input_scope": "Canvas2D或WebGL1页面API与像素读取；非指针输入、非实体GPU性能测量",
  "result": {
    "singleErased": [
      0,
      0,
      0,
      0
    ],
    "foregroundErased": [
      0,
      0,
      0,
      0
    ],
    "separateBackground": [
      0,
      128,
      0,
      255
    ]
  },
  "unmeasured": [
    "实体触摸屏和GPU性能",
    "Firefox/Safari/WebView",
    "辅助技术朗读与真人可用性",
    "目标展项和业务服务"
  ]
}