此结构体由 RayTracingAccelerationStructure.CullInstances 函数用于确定光线追踪实例的三角形剔除和顶点绕序。
| checkDoubleSidedGIMaterial | 是否检查 Material.doubleSidedGI 属性以确定光线追踪实例是否被视为具有双面几何体。 |
| forceDoubleSided | 在 GPU 上遍历加速结构时，光线遇到几何体时禁用三角形剔除。所有其他影响三角形剔除的选项都将被忽略。 |
| frontTriangleCounterClockwise | 此属性反转正面和背面三角形，这在例如应用程序的自然绕序与默认绕序不同的情况下很有用。 |
| optionalDoubleSidedShaderKeywords | 用于定义双面几何体的着色器关键字数组。 |
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