Brought back Ultra Quality mode (1.2x) scale, likely for good this time.

It gets you about the same performance as native without AA, it has precedent in other games, it gives us nice symmetry with Ultra Performance mode, and it means the QualityMode enum is 0-based now.

Assets/Scripts/Core/Fsr2.cs

@@ -66,6 +66,8 @@ namespace FidelityFX
         {
             switch (qualityMode)
             {
+                case QualityMode.UltraQuality:
+                    return 1.2f;
                 case QualityMode.Quality:
                     return 1.5f;
                 case QualityMode.Balanced:
@@ -84,8 +86,8 @@ namespace FidelityFX
             int displayWidth, int displayHeight, QualityMode qualityMode)
         {
             float ratio = GetUpscaleRatioFromQualityMode(qualityMode);
-            renderWidth = (int)(displayWidth / ratio);
-            renderHeight = (int)(displayHeight / ratio);
+            renderWidth = (int)(displayWidth / ratio + 0.01f);
+            renderHeight = (int)(displayHeight / ratio + 0.01f);
         }
         
         public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
@@ -128,6 +130,7 @@ namespace FidelityFX
         
         public enum QualityMode
         {
+            UltraQuality = 0,
             Quality = 1,
             Balanced = 2,
             Performance = 3,