Merge remote-tracking branch 'origin/gi' into large-worlds

# Conflicts:
#	Source/Engine/Graphics/PostProcessSettings.cpp
#	Source/Engine/Level/Actors/SkyLight.cpp
#	Source/Engine/Renderer/GBufferPass.cpp
#	Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
#	Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp
#	Source/Engine/Renderer/GlobalSignDistanceFieldPass.h
#	Source/Engine/Renderer/RenderList.h

Source/Engine/Level/Actors/Skybox.h

@@ -68,6 +68,7 @@ public:
     bool IntersectsItself(const Ray& ray, Real& distance, Vector3& normal) override;
 
     // [ISkyRenderer]
+    bool IsDynamicSky() const override;
     void ApplySky(GPUContext* context, RenderContext& renderContext, const Matrix& world) override;
 
 protected: