perf: bump framework to 2026.519.1 and apply System.Numerics hot-path optimizations

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/c0af79df-8006-4631-912e-eef9cc6d726b

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

osu.Android.props

@@ -52,7 +52,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.517.1" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.519.1" />
     <!-- `ppy.osu.Framework.NativeLibs` is a transitive dependency of `ppy.osu.Framework`
          that ships desktop-only natives (Linux/macOS/Windows) under `runtimes/<rid>/native/`
          — including a bare Linux `libbass.so`/`libbass_fx.so`/`libbassmix.so` for linux-arm64.

osu.Game.Rulesets.Osu/Difficulty/Preprocessing/OsuDifficultyHitObject.cs

@@ -335,7 +335,7 @@ private void computeSliderCursorPosition()
                     // This code is designed to prevent buffing situations where lazy end is actually a less efficient movement.
                     Vector2 lazyMovement = Vector2.Subtract((Vector2)LazyEndPosition, currCursorPosition);
 
-                    if (lazyMovement.Length() < currMovement.Length())
+                    if (lazyMovement.LengthSquared() < currMovement.LengthSquared())
                         currMovement = lazyMovement;
 
                     currMovementLength = scalingFactor * currMovement.Length();

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderBall.cs

@@ -72,7 +72,7 @@ public void UpdateProgress(double completionProgress)
 
             // Ensure the value is substantially high enough to allow for Atan2 to get a valid angle.
             // Needed for when near completion, or in case of a very short slider.
-            if (diff.Length() < 0.01f)
+            if (diff.LengthSquared() < 0.0001f)
                 return;
 
             ball.Rotation = -90 + (float)(-Math.Atan2(diff.X, diff.Y) * 180 / Math.PI);

osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerDisc.cs

@@ -205,7 +205,7 @@ protected override void Update()
             else
             {
                 trackingElementInterpolation =
-                    (float)Interpolation.Damp(trackingElementInterpolation, drawableSpinner.RotationTracker.Tracking ? 1 : 0, 0.985f, (float)Math.Abs(Clock.ElapsedFrameTime));
+                    (float)Interpolation.Damp(trackingElementInterpolation, drawableSpinner.RotationTracker.Tracking ? 1 : 0, 0.985f, MathF.Abs((float)Clock.ElapsedFrameTime));
 
                 fill.Alpha = trackingElementInterpolation * (tracking_alpha - idle_alpha) + idle_alpha;
                 centre.Size = new Vector2(trackingElementInterpolation * (tracking_centre_size - idle_centre_size) + idle_centre_size);
@@ -214,7 +214,7 @@ protected override void Update()
             const float initial_fill_scale = 0.1f;
             float targetScale = initial_fill_scale + (0.98f - initial_fill_scale) * drawableSpinner.Progress;
 
-            fill.Scale = new Vector2((float)Interpolation.Lerp(fill.Scale.X, targetScale, Math.Clamp(Math.Abs(Time.Elapsed) / 100, 0, 1)));
+            fill.Scale = new Vector2((float)Interpolation.Lerp(fill.Scale.X, targetScale, Math.Clamp(MathF.Abs((float)Time.Elapsed) / 100f, 0f, 1f)));
             ticks.Rotation = drawableSpinner.RotationTracker.Rotation;
         }
 

osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerProgressArc.cs

@@ -68,8 +68,8 @@ protected override void Update()
 
             background.Alpha = spinner.Progress >= 1 ? 0 : 1;
 
-            fill.Alpha = (float)Interpolation.DampContinuously(fill.Alpha, spinner.Progress > 0 && spinner.Progress < 1 ? 1 : 0, 40f, (float)Math.Abs(Time.Elapsed));
-            fill.Progress = (float)Interpolation.DampContinuously(fill.Progress, spinner.Progress >= 1 ? 0 : arc_fill * spinner.Progress, 40f, (float)Math.Abs(Time.Elapsed));
+            fill.Alpha = (float)Interpolation.DampContinuously(fill.Alpha, spinner.Progress > 0 && spinner.Progress < 1 ? 1 : 0, 40f, MathF.Abs((float)Time.Elapsed));
+            fill.Progress = (float)Interpolation.DampContinuously(fill.Progress, spinner.Progress >= 1 ? 0 : arc_fill * spinner.Progress, 40f, MathF.Abs((float)Time.Elapsed));
 
             fill.Rotation = (float)(90 - fill.Progress * 180);
         }

osu.Game.Rulesets.Osu/Skinning/Argon/ArgonSpinnerRingArc.cs

@@ -44,8 +44,8 @@ protected override void Update()
         {
             base.Update();
 
-            fill.Progress = (float)Interpolation.DampContinuously(fill.Progress, spinner.Progress >= 1 ? arc_fill_complete : arc_fill, 40f, (float)Math.Abs(Time.Elapsed));
-            fill.InnerRadius = (float)Interpolation.DampContinuously(fill.InnerRadius, spinner.Progress >= 1 ? arc_radius * 2.2f : arc_radius, 40f, (float)Math.Abs(Time.Elapsed));
+            fill.Progress = (float)Interpolation.DampContinuously(fill.Progress, spinner.Progress >= 1 ? arc_fill_complete : arc_fill, 40f, MathF.Abs((float)Time.Elapsed));
+            fill.InnerRadius = (float)Interpolation.DampContinuously(fill.InnerRadius, spinner.Progress >= 1 ? arc_radius * 2.2f : arc_radius, 40f, MathF.Abs((float)Time.Elapsed));
 
             fill.Rotation = (float)(-fill.Progress * 180);
         }

osu.Game.Rulesets.Osu/Skinning/Default/DefaultSpinnerDisc.cs

@@ -112,13 +112,13 @@ protected override void Update()
             }
             else
             {
-                fill.Alpha = (float)Interpolation.Damp(fill.Alpha, drawableSpinner.RotationTracker.Tracking ? tracking_alpha : idle_alpha, 0.98f, (float)Math.Abs(Clock.ElapsedFrameTime));
+                fill.Alpha = (float)Interpolation.Damp(fill.Alpha, drawableSpinner.RotationTracker.Tracking ? tracking_alpha : idle_alpha, 0.98f, MathF.Abs((float)Clock.ElapsedFrameTime));
             }
 
             const float initial_fill_scale = 0.2f;
             float targetScale = initial_fill_scale + (1 - initial_fill_scale) * drawableSpinner.Progress;
 
-            fill.Scale = new Vector2((float)Interpolation.Lerp(fill.Scale.X, targetScale, Math.Clamp(Math.Abs(Time.Elapsed) / 100, 0, 1)));
+            fill.Scale = new Vector2((float)Interpolation.Lerp(fill.Scale.X, targetScale, Math.Clamp(MathF.Abs((float)Time.Elapsed) / 100f, 0f, 1f)));
             mainContainer.Rotation = drawableSpinner.RotationTracker.Rotation;
         }
 

osu.Game/osu.Game.csproj

@@ -38,10 +38,10 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Realm" Version="20.1.0" />
-    <PackageReference Include="ppy.osu.Framework" Version="2026.517.1" />
+    <PackageReference Include="ppy.osu.Framework" Version="2026.519.1" />
     <!--
       Explicitly pin `ppy.Veldrid.SPIRV` to the winnerspiros fork build that
-      `ppy.osu.Framework 2026.517.1` was compiled against. This version is the only
+      `ppy.osu.Framework 2026.519.1` was compiled against. This version is the only
       one whose `runtimes/android-arm64/native/libveldrid-spirv.so` is aligned to 16 KB
       pages (required by Android 16+). It lives only as a release asset on
       <https://github.com/winnerspiros/veldrid-spirv/releases/tag/1.0> and is vendored

osu.iOS.props

@@ -33,6 +33,6 @@
     <SuppressTrimAnalysisWarnings>true</SuppressTrimAnalysisWarnings>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.iOS" Version="2026.517.1" />
+    <PackageReference Include="ppy.osu.Framework.iOS" Version="2026.519.1" />
   </ItemGroup>
 </Project>