Scene exposure override

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -151,6 +151,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Add support of lightlayers on indirect lighting controller
 - Added compute shader stripping.
 - Added Cull Mode option for opaque materials and ShaderGraphs. 
+- Added scene view exposure override.
 
 ### Fixed
 - Fix when rescale probe all direction below zero (1219246)

com.unity.render-pipelines.high-definition/Runtime/PostProcessing/PostProcessSystem.cs

@@ -394,7 +394,7 @@ public void BeginFrame(CommandBuffer cmd, HDCamera camera, HDRenderPipeline hdIn
                 // Fix exposure is store in Exposure Textures at the beginning of the frame as there is no need for color buffer
                 // Dynamic exposure (Auto, curve) is store in Exposure Textures at the end of the frame (as it rely on color buffer)
                 // Texture current and previous are swapped at the beginning of the frame.
-                bool isFixedExposure = IsExposureFixed();
+                bool isFixedExposure = IsExposureFixed(camera);
                 if (isFixedExposure)
                 {
                     using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.FixedExposure)))
@@ -489,7 +489,7 @@ void PoolSource(ref RTHandle src, RTHandle dst)
 
                 // Dynamic exposure - will be applied in the next frame
                 // Not considered as a post-process so it's not affected by its enabled state
-                if (!IsExposureFixed() && m_ExposureControlFS)
+                if (!IsExposureFixed(camera) && m_ExposureControlFS)
                 {
                     using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.DynamicExposure)))
                     {
@@ -894,7 +894,7 @@ static void DoCopyAlpha(in DoCopyAlphaParameters parameters, RTHandle source, RT
         #region Exposure
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        bool IsExposureFixed() => m_Exposure.mode.value == ExposureMode.Fixed || m_Exposure.mode.value == ExposureMode.UsePhysicalCamera;
+        bool IsExposureFixed(HDCamera camera) => m_Exposure.mode.value == ExposureMode.Fixed || m_Exposure.mode.value == ExposureMode.UsePhysicalCamera || (camera.camera.cameraType == CameraType.SceneView && HDAdditionalSceneViewSettings.sceneExposureOverriden);
 
         public RTHandle GetExposureTexture(HDCamera camera)
         {
@@ -979,10 +979,15 @@ void DoFixedExposure(CommandBuffer cmd, HDCamera camera)
 
             int kernel = 0;
 
-            if (m_Exposure.mode.value == ExposureMode.Fixed)
+            if (m_Exposure.mode.value == ExposureMode.Fixed || (HDAdditionalSceneViewSettings.sceneExposureOverriden && camera.camera.cameraType == CameraType.SceneView))
             {
                 kernel = cs.FindKernel("KFixedExposure");
-                cmd.SetComputeVectorParam(cs, HDShaderIDs._ExposureParams, new Vector4(m_Exposure.compensation.value + m_DebugExposureCompensation, m_Exposure.fixedExposure.value, 0f, 0f));
+                var exposureParam = new Vector4(m_Exposure.compensation.value + m_DebugExposureCompensation, m_Exposure.fixedExposure.value, 0f, 0f);
+                if (HDAdditionalSceneViewSettings.sceneExposureOverriden)
+                {
+                    exposureParam = new Vector4(0.0f, HDAdditionalSceneViewSettings.sceneExposure, 0f, 0f);
+                }
+                cmd.SetComputeVectorParam(cs, HDShaderIDs._ExposureParams, exposureParam);
             }
             else if (m_Exposure.mode == ExposureMode.UsePhysicalCamera)
             {

com.unity.render-pipelines.high-definition/Runtime/Utilities/HDAdditionalSceneViewSettings.cs

@@ -11,6 +11,8 @@ static class Styles
         {
             public static readonly GUIContent AAMode = EditorGUIUtility.TrTextContent("Camera Anti-aliasing", "The anti-alising mode that will be used in the scene view camera.");
             public static readonly GUIContent StopNaNs = EditorGUIUtility.TrTextContent("Camera Stop NaNs", "When enabled, any NaNs in the color buffer of the scene view camera will be suppressed.");
+            public static readonly GUIContent OverrideExposure = EditorGUIUtility.TrTextContent("Override Exposure", "When enabled, the scene exposure is overridden with the selected value.");
+            public static readonly GUIContent OverriddenExposure = EditorGUIUtility.TrTextContent("Scene Exposure", "The value for the overridden exposure.");
 #if UNITY_2020_2_OR_NEWER
             public static readonly string HelpBox = "Temporal Anti - aliasing in the Scene View is only supported when Always Refresh is enabled.";
 #else
@@ -102,6 +104,21 @@ public static bool sceneViewStopNaNs
             set => s_SceneViewStopNaNs.value = value;
         }
 
+        static CachedEditorPref<bool> s_SceneExposureOverride = new CachedEditorPref<bool>("HDRP:SceneViewCamera:OverrideExposure", false);
+
+        public static bool sceneExposureOverriden
+        {
+            get => s_SceneExposureOverride.value;
+            set => s_SceneExposureOverride.value = value;
+        }
+
+        static CachedEditorPref<float> s_SceneExposure = new CachedEditorPref<float>("HDRP:SceneViewCamera:Exposure", 10.0f);
+
+        public static float sceneExposure
+        {
+            get => s_SceneExposure.value;
+            set => s_SceneExposure.value = value;
+        }
         static HDAdditionalSceneViewSettings()
         {
             SceneViewCameraWindow.additionalSettingsGui += DoAdditionalSettings;
@@ -111,12 +128,15 @@ static void DoAdditionalSettings(SceneView sceneView)
         {
             EditorGUILayout.Space();
             EditorGUILayout.LabelField("HD Render Pipeline", EditorStyles.boldLabel);
-
             sceneViewAntialiasing = (AntialiasingMode)EditorGUILayout.EnumPopup(Styles.AAMode, sceneViewAntialiasing);
             if (sceneViewAntialiasing == AntialiasingMode.TemporalAntialiasing)
                 EditorGUILayout.HelpBox(Styles.HelpBox, MessageType.Info);
 
             sceneViewStopNaNs = EditorGUILayout.Toggle(Styles.StopNaNs, sceneViewStopNaNs);
+
+            sceneExposureOverriden = EditorGUILayout.Toggle(Styles.OverrideExposure, sceneExposureOverriden);
+            if (sceneExposureOverriden)
+                sceneExposure = EditorGUILayout.Slider(Styles.OverriddenExposure, sceneExposure, -11.0f, 16.0f);
         }
     }
 #endif