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.cpp

@@ -87,6 +87,11 @@ bool Skybox::IntersectsItself(const Ray& ray, Real& distance, Vector3& normal)
     return false;
 }
 
+bool Skybox::IsDynamicSky() const
+{
+    return !IsStatic();
+}
+
 void Skybox::ApplySky(GPUContext* context, RenderContext& renderContext, const Matrix& world)
 {
     // Prepare mock draw call data