您可以用来配置作为 RayTracingAccelerationStructure 部分的射线追踪 Mesh 实例的参数。
此结构体将不同射线追踪实例之间的通用参数分组在一起。
其他资源: RayTracingAccelerationStructure.AddInstance，RayTracingAccelerationStructure.AddInstances。
| accelerationStructureBuildFlags | Unity 在构建此射线追踪实例配置引用的几何体的加速结构时使用的标志。 |
| accelerationStructureBuildFlagsOverride | 是否覆盖在创建 RayTracingAccelerationStructure 时指定的构建标志。 |
| dynamicGeometry | Unity 是否将几何体视为动画。 |
| enableTriangleCulling | 是否为此射线追踪实例启用正面/背面剔除。 |
| frontTriangleCounterClockwise | 是否翻转此射线追踪实例中三角形的朝向。 |
| layer | 射线追踪实例使用的图层。 |
| lightProbeProxyVolume | 射线追踪实例使用的 LightProbeProxyVolume。 |
| lightProbeUsage | 此实例的光探针插值类型。 |
| mask | 射线追踪实例掩码。 |
| material | 射线追踪实例使用的材质。 |
| materialProperties | 要应用于材质的附加材质属性。 |
| mesh | 要添加到 RayTracingAccelerationStructure 的网格。 |
| motionVectorMode | 运动向量模式。 |
| renderingLayerMask | 您可以在 HLSL 中使用 unity_RenderingLayer 内置着色器统一变量访问的掩码。 |
| subMeshFlags | 确定射线在射线追踪期间相对于材质类型如何与每个子网格的几何体相交的标志。 |
| subMeshIndex | 当网格包含多个子网格时，子网格的索引。 |
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