From 6d853c2ae449a297a8b22e169e8d9daef2333cad Mon Sep 17 00:00:00 2001
From: Stanislav Skobelkin <stanislav@skobelk.in>
Date: Sun, 12 Sep 2021 02:28:30 +0300
Subject: [PATCH] Add an allocation-free alternative to Image.Pixels

---
 src/SFML.Graphics/Image.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/SFML.Graphics/Image.cs b/src/SFML.Graphics/Image.cs
index e167a730..f856ceef 100644
--- a/src/SFML.Graphics/Image.cs
+++ b/src/SFML.Graphics/Image.cs
@@ -297,6 +297,24 @@ public byte[] Pixels
             }
         }
 
+        ////////////////////////////////////////////////////////////
+        /// <summary>
+        /// Copy the array of pixels (RGBA 8 bits integers
+        /// components) to the provided buffer.
+        /// Buffer size must be at least Width x Height x 4
+        /// </summary>
+        /// <param name="buffer">Buffer to copy to</param>
+        ////////////////////////////////////////////////////////////
+        public void CopyPixels(byte[] buffer)
+        {
+            Vector2u size = Size;
+            if (buffer.Length < size.X * size.Y * 4)
+            {
+                throw new ArgumentException("Buffer must have a size of at least Width * Height * 4 bytes", nameof(buffer));
+            }
+            Marshal.Copy(sfImage_getPixelsPtr(CPointer), buffer, 0, (int)(size.X * size.Y * 4));
+        }
+
         ////////////////////////////////////////////////////////////
         /// <summary>
         /// Size of the image, in pixels