From a8b7d2cee254b23caf7868577e8859f948343263 Mon Sep 17 00:00:00 2001
From: Sarah Bradley <git@sarahduck.ca>
Date: Wed, 17 Apr 2024 17:45:42 -0700
Subject: Using reusable pointers for image types hope it works..

---
 Bitmap.cs | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/Bitmap.cs b/Bitmap.cs
index 7f7b9d6..8a87f7c 100644
--- a/Bitmap.cs
+++ b/Bitmap.cs
@@ -40,6 +40,22 @@ public unsafe class Bitmap
         _ => throw new Exception("Image type not supported... How did you get this error??")
     };
 
+    static readonly IntPtr PngPtr = Marshal.StringToHGlobalAnsi(".png");
+    static readonly IntPtr GifPtr = Marshal.StringToHGlobalAnsi(".gif");
+    static readonly IntPtr JpgPtr = Marshal.StringToHGlobalAnsi(".jpg");
+    static readonly IntPtr TgaPtr = Marshal.StringToHGlobalAnsi(".tga");
+    static readonly IntPtr BmpPtr = Marshal.StringToHGlobalAnsi(".bmp");
+
+    static IntPtr ImageTypeToPointer(ImageType type) => type switch
+    {
+        ImageType.PNG => PngPtr,
+        ImageType.GIF => GifPtr,
+        ImageType.JPG => JpgPtr,
+        ImageType.TGA => TgaPtr,
+        ImageType.BMP => BmpPtr,
+        _ => throw new Exception("Image type not supported... How did you get this error??")
+    };
+
     public int Width
     {
         get => img.width;
@@ -59,7 +75,8 @@ public unsafe class Bitmap
 
     public byte[] ToMemory(ImageType imageType = ImageType.PNG)
     {
-        byte* ptr = Raylib.ExportImageToMemory(img, ImageTypeToString(imageType), out int length);
+        int length;
+        byte* ptr = Raylib.ExportImageToMemory(img, (sbyte*)ImageTypeToPointer(imageType), &length);
         byte[] mem = new byte[length];
         Marshal.Copy((nint)ptr, mem, 0, length);
         return mem;
@@ -69,7 +86,7 @@ public unsafe class Bitmap
     {
         Image img;
         fixed (byte* ptr = &ImageMemory[0])
-        img = Raylib.LoadImageFromMemory(ImageTypeToString(imageType), ptr, ImageMemory.Length);
+        img = Raylib.LoadImageFromMemory((sbyte*)ImageTypeToPointer(imageType), ptr, ImageMemory.Length);
         return new Bitmap(img);
     }
 
-- 
cgit