Add BounceIntensity to Global Illumination settings

Source/Engine/Graphics/PostProcessSettings.h

@@ -296,10 +296,15 @@ API_ENUM(Attributes="Flags") enum class GlobalIlluminationSettingsOverride : int
     /// </summary>
     FallbackIrradiance = 1 << 4,
 
+    /// <summary>
+    /// Overrides <see cref="GlobalIlluminationSettings.BounceIntensity"/> property.
+    /// </summary>
+    BounceIntensity = 1 << 5,
+
     /// <summary>
     /// All properties.
     /// </summary>
-    All = Mode | Intensity | TemporalResponse | Distance | FallbackIrradiance,
+    All = Mode | Intensity | TemporalResponse | Distance | FallbackIrradiance | BounceIntensity,
 };
 
 /// <summary>
@@ -329,6 +334,12 @@ API_STRUCT() struct FLAXENGINE_API GlobalIlluminationSettings : ISerializable
     API_FIELD(Attributes="EditorOrder(10), Limit(0, 10, 0.01f), PostProcessSetting((int)GlobalIlluminationSettingsOverride.Intensity)")
     float Intensity = 1.0f;
 
+    /// <summary>
+    /// Global Illumination infinite indirect lighting bounce intensity scale. Can be used to boost or reduce GI effect for the light bouncing on the surfaces.
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(11), Limit(0, 10, 0.01f), PostProcessSetting((int)GlobalIlluminationSettingsOverride.BounceIntensity)")
+    float BounceIntensity = 1.0f;
+
     /// <summary>
     /// Defines how quickly GI blends between the the current frame and the history buffer. Lower values update GI faster, but with more jittering and noise. If the camera in your game doesn't move much, we recommend values closer to 1.
     /// </summary>