Enable HDR by default and clarified the tooltip somewhat

Assets/Scenes/SampleScene.unity

@@ -319,7 +319,7 @@ MonoBehaviour:
   qualityMode: 2
   performSharpenPass: 1
   sharpness: 0.8
-  enableHDR: 0
+  enableHDR: 1
   enableFP16: 0
   enableAutoExposure: 1
   preExposure: 1

Assets/Scenes/SampleScenePPV2Post.unity

@@ -322,7 +322,7 @@ MonoBehaviour:
   qualityMode: 3
   performSharpenPass: 1
   sharpness: 0.8
-  enableHDR: 0
+  enableHDR: 1
   enableFP16: 0
   enableAutoExposure: 1
   preExposure: 1

Assets/Scripts/Fsr2ImageEffect.cs

@@ -44,8 +44,8 @@ namespace FidelityFX
         [Tooltip("Strength of the sharpening effect.")]
         [Range(0, 1)] public float sharpness = 0.8f;
         
-        [Tooltip("Enable this if you're passing a pre-tonemapping HDR image to the upscaler.")]
-        public bool enableHDR = false;
+        [Tooltip("Make use of high-dynamic range render texture formats and tonemapping adjustment during upscaling.")]
+        public bool enableHDR = true;
         [Tooltip("Allow the use of half precision compute operations, potentially improving performance if the platform supports it.")]
         public bool enableFP16 = false;