vault backup: 2025-06-25 23:40:45

03-UnrealEngine/Rendering/RenderFeature/FRenderCommandFence.md

@@ -20,13 +20,14 @@ rating: ⭐
 ---
 
 ### 关键方法
-- **`BeginFence()`**  
-    在渲染命令队列中插入一个“栅栏标记”，表示同步点。调用后游戏线程可以继续执行其他任务。
+- **`BeginFence(bool bSyncToRHIAndGPU = false)`**  
+    - 在渲染命令队列中插入一个“栅栏标记”，表示同步点。调用后游戏线程可以继续执行其他任务。
+    - `bSyncToRHIAndGPU` - 是否等待 RHI 线程或 GPU，否则只等待渲染线程。
 - **`Wait(bool bProcessGameThreadTasks = false)`**
     - 阻塞游戏线程，直到渲染线程处理到栅栏位置（即执行完栅栏之前的所有渲染命令）。
     - `bProcessGameThreadTasks`: 若为 `true`，等待期间允许游戏线程处理其他任务（如消息泵）。
 - **`IsFenceComplete()`**  
-    非阻塞检查栅栏是否已完成（渲染线程是否已越过栅栏点）。
+    - 非阻塞检查栅栏是否已完成（渲染线程是否已越过栅栏点）。
 
 ---
 

03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md

@@ -154,6 +154,63 @@ void AShaderWorldActor::ReadbacksManagement()
 ```
 
 ### CollisionManagement()
+```c++
+void AShaderWorldActor::CollisionManagement(float& DeltaT)
+{
+	SCOPED_NAMED_EVENT_TEXT("AShaderWorldActor::CollisionManagement", FColor::Magenta);
+	SW_FCT_CYCLE()
+
+	/*
+	 * Can we execute compute shader?
+	 * Do we need to rebuild collision?
+	 * Did ShaderWorld toggled collision generation On/Off?
+	 * Are we pending a full rebuild of the Shader World?
+	 */
+	if (!SetupCollisions())
+		return;
+
+	/*
+	 * Using collision updates, update Collision meshes
+	 */
+	if (!CollisionFinalizeWork())
+		return;
+
+	if (CollisionProcess.IsFenceComplete())
+	{
+		/*
+		 * Convert Compute shader results to actionable collision updates
+		 */
+		if (!CollisionPreprocessGPU())
+		{
+			CollisionProcess.BeginFence(true);
+			return;
+		}
+	}
+
+	/*
+	 * Process GPU work queue by launching GPU tasks to evaluate the collision of new tiles
+	 */
+	CollisionGPU();
+
+	// Timer
+	{
+		CollisionUpdateTimeAcu += DeltaT;
+
+		if (CollisionUpdateTimeAcu <= 1.f / 10.f || CollisionWorkQueue.Num() > 0 || !CollisionProcess.IsFenceComplete())
+			return;
+
+		CollisionUpdateTimeAcu = 0.f;
+	}
+
+	/*
+	 * Gather relevant collision tiles
+	 * If an old tile is not relevant anymore, release it.
+	 * If a new location needs to be computed: allocate a tile and add its relevant computation work to the GPU work queue
+	 */
+	CollisionCPU();
+}
+```
+#### SetupCollisions()
 
 ### SpawnablesManagement()