From f1b6c13ba9d63e2634c5f6206cc5252b01ea70a0 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Thu, 26 Mar 2026 15:33:55 +0100
Subject: [PATCH] Fix PixelFormatSampler.Write` in C# to actually work

---
 Source/Engine/Graphics/Models/MeshAccessor.cs | 18 +++++++++---------
 Source/Engine/Graphics/PixelFormatSampler.cs  |  4 ++--
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/Source/Engine/Graphics/Models/MeshAccessor.cs b/Source/Engine/Graphics/Models/MeshAccessor.cs
index 1db33b5ba..8e9050e5a 100644
--- a/Source/Engine/Graphics/Models/MeshAccessor.cs
+++ b/Source/Engine/Graphics/Models/MeshAccessor.cs
@@ -157,7 +157,7 @@ namespace FlaxEngine
 #endif
                 var v = new Float4(value);
                 fixed (byte* data = _data)
-                    _sampler.Write(data + index * _stride, ref v);
+                    _sampler.Write(data + index * _stride, &v);
             }
 
             /// <summary>
@@ -173,7 +173,7 @@ namespace FlaxEngine
 #endif
                 var v = new Float4(value);
                 fixed (byte* data = _data)
-                    _sampler.Write(data + index * _stride, ref v);
+                    _sampler.Write(data + index * _stride, &v);
             }
 
             /// <summary>
@@ -189,7 +189,7 @@ namespace FlaxEngine
 #endif
                 var v = new Float4(value, 0.0f, 0.0f);
                 fixed (byte* data = _data)
-                    _sampler.Write(data + index * _stride, ref v);
+                    _sampler.Write(data + index * _stride, &v);
             }
 
             /// <summary>
@@ -205,7 +205,7 @@ namespace FlaxEngine
 #endif
                 var v = new Float4(value, 0.0f);
                 fixed (byte* data = _data)
-                    _sampler.Write(data + index * _stride, ref v);
+                    _sampler.Write(data + index * _stride, &v);
             }
 
             /// <summary>
@@ -220,7 +220,7 @@ namespace FlaxEngine
                     throw new NullReferenceException("Missing stream data. Ensure to allocate mesh buffer or check for its existence.");
 #endif
                 fixed (byte* data = _data)
-                    _sampler.Write(data + index * _stride, ref value);
+                    _sampler.Write(data + index * _stride, &value);
             }
 
             /// <summary>
@@ -259,7 +259,7 @@ namespace FlaxEngine
                         for (int i = 0; i < count; i++)
                         {
                             var v = new Float4(src[i], 0.0f, 0.0f);
-                            _sampler.Write(data + i * _stride, ref v);
+                            _sampler.Write(data + i * _stride, &v);
                         }
                     }
                 }
@@ -287,7 +287,7 @@ namespace FlaxEngine
                         for (int i = 0; i < count; i++)
                         {
                             var v = new Float4(src[i], 0.0f);
-                            _sampler.Write(data + i * _stride, ref v);
+                            _sampler.Write(data + i * _stride, &v);
                         }
                     }
                 }
@@ -315,7 +315,7 @@ namespace FlaxEngine
                         for (int i = 0; i < count; i++)
                         {
                             var v = (Float4)src[i];
-                            _sampler.Write(data + i * _stride, ref v);
+                            _sampler.Write(data + i * _stride, &v);
                         }
                     }
                 }
@@ -352,7 +352,7 @@ namespace FlaxEngine
                         for (int i = 0; i < count; i++)
                         {
                             var v = new Float4(src[i]);
-                            _sampler.Write(data + i * _stride, ref v);
+                            _sampler.Write(data + i * _stride, &v);
                         }
                     }
                 }
diff --git a/Source/Engine/Graphics/PixelFormatSampler.cs b/Source/Engine/Graphics/PixelFormatSampler.cs
index 8ff5a32fb..62046b2a5 100644
--- a/Source/Engine/Graphics/PixelFormatSampler.cs
+++ b/Source/Engine/Graphics/PixelFormatSampler.cs
@@ -22,7 +22,7 @@ namespace FlaxEngine
         /// <summary>
         /// Write data function.
         /// </summary>
-        public delegate* unmanaged<void*, ref Float4, void> Write;
+        public delegate* unmanaged<void*, Float4*, void> Write;
 
         /// <summary>
         /// Tries to get a sampler tool for the specified format to read pixels.
@@ -38,7 +38,7 @@ namespace FlaxEngine
                 Format = format,
                 PixelSize = pixelSize,
                 Read = (delegate* unmanaged<void*, Float4>)read.ToPointer(),
-                Write = (delegate* unmanaged<void*, ref Float4, void>)write.ToPointer(),
+                Write = (delegate* unmanaged<void*, Float4*, void>)write.ToPointer(),
             };
             return pixelSize != 0;
         }