Add Global Surface Atlas resolution setting

Source/Engine/Graphics/Graphics.cpp

@@ -16,6 +16,7 @@ Quality Graphics::ShadowMapsQuality = Quality::Medium;
 bool Graphics::AllowCSMBlending = false;
 Quality Graphics::GlobalSDFQuality = Quality::High;
 Quality Graphics::GIQuality = Quality::High;
+int32 Graphics::GlobalSurfaceAtlasResolution = 2048;
 
 #if GRAPHICS_API_NULL
 extern GPUDevice* CreateGPUDeviceNull();

Source/Engine/Graphics/Graphics.h

@@ -63,6 +63,11 @@ public:
     /// </summary>
     API_FIELD() static Quality GIQuality;
 
+    /// <summary>
+    /// The Global Surface Atlas resolution. Adjust it if atlas `flickers` due to overflow.
+    /// </summary>
+    API_FIELD() static int32 GlobalSurfaceAtlasResolution;
+
 public:
 
     /// <summary>