refactor(rendering): centralize stage graph output policies

engine/src/Rendering/Execution/CameraFramePlan.cpp

@@ -41,6 +41,10 @@ bool CameraFramePlan::UsesGraphManagedMainSceneColor() const {
 }
 
 bool CameraFramePlan::UsesGraphManagedOutputColor(CameraFrameStage stage) const {
+    if (stage == CameraFrameStage::MainScene) {
+        return UsesGraphManagedMainSceneColor();
+    }
+
     if (const CameraFrameFullscreenStagePlan* fullscreenStagePlan =
             GetFullscreenStagePlan(stage);
         fullscreenStagePlan != nullptr) {

engine/src/Rendering/Execution/Internal/CameraFrameGraph/StageContract.cpp

@@ -108,6 +108,23 @@ RenderGraphSurfaceAccessMode BuildCameraFrameStageFallbackSurfaceAccessMode(
         : RenderGraphSurfaceAccessMode::ColorDepth;
 }
 
+void PublishCameraFrameStageGraphDepthAliasResource(
+    CameraFrameRenderGraphResources& frameResources,
+    const CameraFrameStageGraphBuildState& stageState,
+    const DirectionalShadowExecutionState& shadowState) {
+    switch (GetCameraFrameStagePublishedDepthAliasRole(stageState.stage)) {
+    case CameraFrameStagePublishedDepthAliasRole::MainDirectionalShadow:
+        if (shadowState.HasShadowSampling() &&
+            stageState.outputSurface.depthTexture.IsValid()) {
+            frameResources.mainDirectionalShadow =
+                stageState.outputSurface.depthTexture;
+        }
+        break;
+    default:
+        break;
+    }
+}
+
 } // namespace
 
 CameraFrameRenderGraphSourceBinding BuildCameraFrameStageGraphSourceBinding(
@@ -168,12 +185,10 @@ void PublishCameraFrameStageGraphResources(
         stageState.stage,
         stageState.outputColor,
         stageState.outputSurface.depthTexture);
-
-    if (stageState.stage == CameraFrameStage::ShadowCaster &&
-        context.shadowState.HasShadowSampling() &&
-        stageState.outputSurface.depthTexture.IsValid()) {
-        frameResources.mainDirectionalShadow = stageState.outputSurface.depthTexture;
-    }
+    PublishCameraFrameStageGraphDepthAliasResource(
+        frameResources,
+        stageState,
+        context.shadowState);
 }
 
 RenderSceneData BuildCameraFrameStandaloneStageSceneData(

engine/src/Rendering/Execution/Internal/CameraFrameGraph/StagePolicy.h

@@ -16,12 +16,7 @@ struct CameraFrameRenderGraphSourceBinding {
 inline bool UsesCameraFrameStageGraphManagedOutputColor(
     const CameraFramePlan& plan,
     CameraFrameStage stage) {
-    switch (stage) {
-    case CameraFrameStage::MainScene:
-        return plan.UsesGraphManagedMainSceneColor();
-    default:
-        return plan.UsesGraphManagedOutputColor(stage);
-    }
+    return plan.UsesGraphManagedOutputColor(stage);
 }
 
 inline CameraFrameColorSource ResolveCameraFrameStageGraphManagedColorSource(