Merge pull request #1278 from ionite34/dev

Dev

Author: mohnjiles

CHANGELOG.md

@@ -30,6 +30,8 @@ and this project adheres to [Semantic Versioning 2.0](https://semver.org/spec/v2
 - Fixed Animagine XL and other SDXL models with "anima" in the name being misdetected as the Anima architecture
 - Fixed the running-package exit confirmation not appearing when quitting via **⌘Q, the macOS app menu, or the Dock** — it previously only showed when closing the window directly, so those paths could tear down running packages without warning. All quit paths now prompt
 - Fixed an empty strip of space appearing below the native window title bar on macOS and Linux; the Windows-only caption area (icon, title, and min/max/close buttons) is now collapsed on those platforms so content sits directly under the system title bar
+### Performance
+- Optimized SKBitmap-to-WriteableBitmap conversion used throughout Inference and Image Lab; pixel data is now copied directly native-to-native (single bulk copy when strides match, per-row otherwise) instead of round-tripping every scanline through a temporary managed buffer, reducing allocations and GC pressure on full-resolution images
 ### Supporters
 #### 🌟 Visionaries
 A massive thank you to our brilliant Visionaries: **Waterclouds**, **bluepopsicle**, **Ibixat**, **Droolguy**, **snotty**, **LG**, **whudunit**, **MrMxyzptlk12836**, **Psilocyfer18731**, **KalAbaddon**, and **moon_milky2843**! There's a little of your support behind every fix and refinement in this update, and we're grateful for all of it. A warm welcome to our newest Visionary, **cusalapapen1481**; it's wonderful to have you with us! 💛

StabilityMatrix.Avalonia/Extensions/SkiaExtensions.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Runtime.InteropServices;
 using Avalonia;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
@@ -193,7 +192,7 @@ public static Bitmap ToAvaloniaBitmap(this SKImage image, Vector dpi)
         return result;
     }
 
-    private static void CopyPixelRows(
+    private static unsafe void CopyPixelRows(
         IntPtr source,
         int sourceRowBytes,
         IntPtr destination,
@@ -202,12 +201,25 @@ int height
     )
     {
         var bytesPerRow = Math.Min(sourceRowBytes, destinationRowBytes);
-        var buffer = new byte[bytesPerRow];
+        var src = (byte*)source;
+        var dest = (byte*)destination;
+
+        // When strides match the buffer is contiguous, so copy it all in one shot.
+        if (sourceRowBytes == destinationRowBytes)
+        {
+            var totalBytes = (long)sourceRowBytes * height;
+            Buffer.MemoryCopy(src, dest, totalBytes, totalBytes);
+            return;
+        }
 
         for (var row = 0; row < height; row++)
         {
-            Marshal.Copy(IntPtr.Add(source, row * sourceRowBytes), buffer, 0, bytesPerRow);
-            Marshal.Copy(buffer, 0, IntPtr.Add(destination, row * destinationRowBytes), bytesPerRow);
+            Buffer.MemoryCopy(
+                src + ((long)row * sourceRowBytes),
+                dest + ((long)row * destinationRowBytes),
+                bytesPerRow,
+                bytesPerRow
+            );
         }
     }