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03-UnrealEngine/Rendering/RenderingPipeline/Lighting/RenderLights.md

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+---
+title: RenderLights
+date: 2023-04-09 10:23:21
+excerpt: 
+tags: 
+rating: ⭐
+---
+# 关键函数
+取得所有ShadowMap的投影信息
+```c++
+const FVisibleLightInfo& VisibleLightInfo = VisibleLightInfos[LightSceneInfo->Id];  
+const TArray<FProjectedShadowInfo*, SceneRenderingAllocator>& ShadowMaps = VisibleLightInfo.ShadowsToProject;  
+for (int32 ShadowIndex = 0; ShadowIndex < ShadowMaps.Num(); ShadowIndex++)  
+{  
+   const FProjectedShadowInfo* ProjectedShadowInfo = ShadowMaps[ShadowIndex];
+}
+```
+
+# 透明体积图元渲染
+## InjectSimpleTranslucencyLightingVolumeArray
+插入简单透明体积物体渲染。应该是根据3D贴图渲染体积效果。默认状态下不运行。
+- InjectSimpleLightsTranslucentLighting
+- InjectSimpleTranslucentLightArray 
+
+## InjectTranslucencyLightingVolume
+在收集用于渲染透明体积的灯光代理信息后进行渲染，主要用于云的渲染。
+- InjectTranslucencyLightingVolume
+
+# 直接光照
+## RenderVirtualShadowMapProjectionMaskBits
+- VirtualShadowMapProjectionMaskBits
+- VirtualShadowMapProjection(RayCount:%u(%s),SamplesPerRay:%u,Input:%s%s)
+
+输出到名为`Shadow.Virtual.MaskBits`与`Shadow.Virtual.MaskBits(HairStrands)`的UAV。
+
+## AddClusteredDeferredShadingPass
+
+## RenderSimpleLightsStandardDeferred
+
+## RenderLight
+针对每个灯在ShadowProjectionOnOpaque渲染ShadowMask
+- VirualShadowMapProjection
+- CompositeVirtualShadowMapMask
+