refactor(srp): move core stage defaults into universal renderer

engine/src/Rendering/Execution/CameraFramePlan.cpp

@@ -60,6 +60,9 @@ CameraFramePlan CameraFramePlan::FromRequest(const CameraRenderRequest& request)
     plan.preScenePasses = request.preScenePasses;
     plan.postScenePasses = request.postScenePasses;
     plan.overlayPasses = request.overlayPasses;
+    plan.shadowCasterStage.requested =
+        request.shadowCaster.IsRequested() ||
+        request.directionalShadow.IsValid();
     plan.colorChain.postProcess.requested = request.postProcess.IsRequested();
     plan.colorChain.finalOutput.requested = request.finalOutput.IsRequested();
     return plan;
@@ -210,6 +213,25 @@ void CameraFramePlan::ClearFullscreenStage(
     RefreshGraphManagedSceneSurfaceState();
 }
 
+bool CameraFramePlan::RequestShadowCasterStage(
+    bool explicitlyConfigured) {
+    shadowCasterStage.requested =
+        shadowCaster.IsRequested() ||
+        directionalShadow.IsValid();
+    shadowCasterStage.explicitlyConfigured =
+        shadowCasterStage.explicitlyConfigured ||
+        explicitlyConfigured;
+    return shadowCasterStage.requested;
+}
+
+void CameraFramePlan::ClearShadowCasterStage(
+    bool explicitlyConfigured) {
+    shadowCasterStage.requested = false;
+    shadowCasterStage.explicitlyConfigured =
+        shadowCasterStage.explicitlyConfigured ||
+        explicitlyConfigured;
+}
+
 bool CameraFramePlan::HasExplicitFullscreenStageConfiguration(
     CameraFrameStage stage) const {
     if (const CameraFrameFullscreenStagePlan* fullscreenStagePlan =
@@ -221,6 +243,14 @@ bool CameraFramePlan::HasExplicitFullscreenStageConfiguration(
     return false;
 }
 
+bool CameraFramePlan::HasExplicitShadowCasterStageConfiguration() const {
+    return shadowCasterStage.explicitlyConfigured;
+}
+
+bool CameraFramePlan::IsShadowCasterStageRequested() const {
+    return shadowCasterStage.requested;
+}
+
 bool CameraFramePlan::IsPostProcessStageValid() const {
     if (!IsFullscreenStageRequested(CameraFrameStage::PostProcess)) {
         return true;
@@ -286,7 +316,7 @@ bool CameraFramePlan::HasFrameStage(CameraFrameStage stage) const {
 
     switch (GetCameraFrameStageRequestKind(stage)) {
     case CameraFrameStageRequestKind::ShadowCaster:
-        return shadowCaster.IsRequested() || directionalShadow.IsValid();
+        return IsShadowCasterStageRequested();
     case CameraFrameStageRequestKind::DepthOnly:
         return request.depthOnly.IsRequested();
     case CameraFrameStageRequestKind::ObjectId: