Added option to enable FP16 from the scene

Assets/Scenes/SampleScene.unity

@@ -317,6 +317,9 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   qualityMode: 3
+  performSharpenPass: 1
+  sharpness: 0.8
+  enableFP16: 0
 --- !u!114 &963194230
 MonoBehaviour:
   m_ObjectHideFlags: 0

Assets/Scripts/Fsr2Controller.cs

@@ -19,6 +19,8 @@ namespace FidelityFX
 
         [SerializeField, Range(0, 1)] private float sharpness = 0.8f;
 
+        [SerializeField] private bool enableFP16 = false;
+
         private Fsr2Context _context;
         private Vector2Int _renderSize;
         private Vector2Int _displaySize;
@@ -41,10 +43,14 @@ namespace FidelityFX
         
         private void OnEnable()
         {
+            Fsr2.InitializationFlags flags = Fsr2.InitializationFlags.EnableMotionVectorsJitterCancellation;
+            if (enableFP16)
+                flags |= Fsr2.InitializationFlags.EnableFP16Usage;
+            
             _displaySize = new Vector2Int(Screen.width, Screen.height);
             Fsr2.GetRenderResolutionFromQualityMode(out var renderWidth, out var renderHeight, _displaySize.x, _displaySize.y, qualityMode);
             _renderSize = new Vector2Int(renderWidth, renderHeight);
-            _context = Fsr2.CreateContext(_displaySize, _renderSize, Fsr2.InitializationFlags.EnableMotionVectorsJitterCancellation);
+            _context = Fsr2.CreateContext(_displaySize, _renderSize, flags);
 
             // Set up the original camera to output all of the required FSR2 input resources at the desired resolution
             _renderCamera = GetComponent<Camera>();
@@ -53,7 +59,7 @@ namespace FidelityFX
             
             _dispatchCommandBuffer = new CommandBuffer { name = "FSR2 Dispatch" };
 
-            // Create command buffers to bind the camera's output at the right moments in the rendering pipeline
+            // Create command buffers to bind the camera's output at the right moments in the render loop
             _opaqueOnlyCommandBuffer = new CommandBuffer { name = "FSR2 Opaque Input" };
             // TODO: may need to copy the opaque-only render buffer to a temp RT here, in which case we'll need an additional CommandBuffer to release the temp RT again
             _opaqueOnlyCommandBuffer.SetGlobalTexture(Fsr2Pipeline.SrvOpaqueOnly, BuiltinRenderTextureType.CameraTarget, RenderTextureSubElement.Color);
@@ -65,8 +71,7 @@ namespace FidelityFX
             _inputsCommandBuffer.SetGlobalTexture(Fsr2Pipeline.SrvInputMotionVectors, BuiltinRenderTextureType.MotionVectors);
             _renderCamera.AddCommandBuffer(CameraEvent.BeforeImageEffects, _inputsCommandBuffer);
 
-            // Adjust texture mipmap LOD bias by log2(renderResolution/displayResolution) - 1.0;
-            // May need to leave this to the game dev, as we don't know which textures do and don't belong to the 3D scene
+            // Apply a mipmap bias so that textures retain their original sharpness
             float biasOffset = Fsr2.GetMipmapBiasOffset(_renderSize.x, _displaySize.x);
             Fsr2.GlobalCallbacks.ApplyMipmapBias(biasOffset);