Comments

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/SuperResolution.cs

@@ -151,10 +151,12 @@ namespace UnityEngine.Rendering.PostProcessing
             var camera = context.camera;
             _originalRect = camera.rect;
             
+            // Determine the desired rendering and display resolutions
             _displaySize = new Vector2Int(camera.pixelWidth, camera.pixelHeight);
             Fsr2.GetRenderResolutionFromQualityMode(out int renderWidth, out int renderHeight, _displaySize.x, _displaySize.y, qualityMode);
             _renderSize = new Vector2Int(renderWidth, renderHeight);
             
+            // Render to a smaller portion of the screen by manipulating the camera's viewport rect
             camera.aspect = (_displaySize.x * _originalRect.width) / (_displaySize.y * _originalRect.height);
             camera.rect = new Rect(0, 0, _originalRect.width * _renderSize.x / _displaySize.x, _originalRect.height * _renderSize.y / _displaySize.y);
         }
@@ -205,6 +207,7 @@ namespace UnityEngine.Rendering.PostProcessing
             _prevExposureSource = exposureSource;
             _prevDisplaySize = _displaySize;
             
+            // Initialize FSR2 context
             Fsr2.InitializationFlags flags = 0;
             if (context.camera.allowHDR) flags |= Fsr2.InitializationFlags.EnableHighDynamicRange;
             if (enableFP16) flags |= Fsr2.InitializationFlags.EnableFP16Usage;
@@ -234,6 +237,7 @@ namespace UnityEngine.Rendering.PostProcessing
                 _fsrContext = null;
             }
 
+            // Undo the current mipmap bias offset
             if (!float.IsNaN(_appliedBiasOffset) && !float.IsInfinity(_appliedBiasOffset) && _appliedBiasOffset != 0f)
             {
                 _callbacks.ApplyMipmapBias(-_appliedBiasOffset);
@@ -265,7 +269,7 @@ namespace UnityEngine.Rendering.PostProcessing
             var camera = context.camera;
             
             // Set up the main FSR2 dispatch parameters
-            // The input and output textures are left blank here, as they are already being bound elsewhere in this source file
+            // The input textures are left blank here, as they get bound directly through SetGlobalTexture elsewhere in this source file
             _dispatchDescription.Color = null;
             _dispatchDescription.Depth = null;
             _dispatchDescription.MotionVectors = null;
@@ -293,6 +297,7 @@ namespace UnityEngine.Rendering.PostProcessing
             _dispatchDescription.ViewSpaceToMetersFactor = 1.0f; // 1 unit is 1 meter in Unity
             _dispatchDescription.Reset = _resetHistory;
 
+            // Set up the parameters for the optional experimental auto-TCR feature
             _dispatchDescription.EnableAutoReactive = autoGenerateTransparencyAndComposition;
             if (autoGenerateTransparencyAndComposition)
             {
@@ -312,6 +317,7 @@ namespace UnityEngine.Rendering.PostProcessing
 
         private void SetupAutoReactiveDescription(PostProcessRenderContext context)
         {
+            // Set up the parameters to auto-generate a reactive mask
             _genReactiveDescription.ColorOpaqueOnly = colorOpaqueOnly;
             _genReactiveDescription.ColorPreUpscale = null;
             _genReactiveDescription.OutReactive = null;