Fixed linear/srgb issues in the color grading editor (trackballs and curve editors)

Author: Chman

PostProcessing/Editor/Decorators/TrackballDecorator.cs

@@ -22,7 +22,7 @@ public override bool OnGUI(SerializedProperty property, SerializedProperty overr
         {
             if (property.propertyType != SerializedPropertyType.Vector4)
                 return false;
-            
+
             var value = property.vector4Value;
 
             using (new EditorGUILayout.VerticalScope())
@@ -67,13 +67,13 @@ void DrawWheel(ref Vector4 value, bool overrideState, TrackballAttribute attr)
             {
                 // Retina support
                 float scale = EditorGUIUtility.pixelsPerPoint;
-    
+
                 if (s_Material == null)
                     s_Material = new Material(Shader.Find("Hidden/PostProcessing/Editor/Trackball")) { hideFlags = HideFlags.HideAndDontSave };
 
                 // Wheel texture
                 var oldRT = RenderTexture.active;
-                var rt = RenderTexture.GetTemporary((int)(size * scale), (int)(size * scale), 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
+                var rt = RenderTexture.GetTemporary((int)(size * scale), (int)(size * scale), 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB);
                 s_Material.SetFloat("_Offset", offset);
                 s_Material.SetFloat("_DisabledState", overrideState ? 1f : 0.5f);
                 s_Material.SetVector("_Resolution", new Vector2(size * scale, size * scale / 2f));
@@ -106,7 +106,7 @@ void DrawWheel(ref Vector4 value, bool overrideState, TrackballAttribute attr)
 
             if (attr.mode == TrackballAttribute.Mode.None)
                 return;
-            
+
             // Values
             var displayValue = Vector3.zero;
 

PostProcessing/Editor/Effects/ColorGradingEditor.cs

@@ -195,7 +195,7 @@ public override void OnInspectorGUI()
                 DoStandardModeGUI(true);
             else if (gradingMode == GradingMode.External)
                 DoExternalModeGUI();
-            
+
             EditorGUILayout.Space();
         }
 
@@ -266,7 +266,7 @@ void DoStandardModeGUI(bool hdr)
 
             EditorGUILayout.Space();
             EditorUtilities.DrawHeaderLabel("White Balance");
-            
+
             PropertyField(m_Temperature);
             PropertyField(m_Tint);
 
@@ -687,7 +687,7 @@ void DrawBackgroundTexture(Rect rect, int pass)
             float scale = EditorGUIUtility.pixelsPerPoint;
 
             var oldRt = RenderTexture.active;
-            var rt = RenderTexture.GetTemporary(Mathf.CeilToInt(rect.width * scale), Mathf.CeilToInt(rect.height * scale), 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
+            var rt = RenderTexture.GetTemporary(Mathf.CeilToInt(rect.width * scale), Mathf.CeilToInt(rect.height * scale), 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB);
             s_MaterialGrid.SetFloat("_DisabledState", GUI.enabled ? 1f : 0.5f);
             s_MaterialGrid.SetFloat("_PixelScaling", EditorGUIUtility.pixelsPerPoint);