From e7f9b53796db044edd33d59805c0d002c8c8297c Mon Sep 17 00:00:00 2001
From: Ethan Lee <flibitijibibo@gmail.com>
Date: Sun, 29 Sep 2013 05:45:58 -0400
Subject: [PATCH] Fix BlitSurface, add BlitSurfaceScaled

---
 src/SDL2.cs | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 88 insertions(+), 1 deletion(-)

diff --git a/src/SDL2.cs b/src/SDL2.cs
index 8977177..a4587c4 100644
--- a/src/SDL2.cs
+++ b/src/SDL2.cs
@@ -2585,7 +2585,7 @@ namespace SDL2
 		}
 
 		/* src and dst refer to an SDL_Surface* */
-		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlit", CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_BlitSurface(
 			IntPtr src,
 			ref SDL_Rect srcrect,
@@ -2593,6 +2593,93 @@ namespace SDL2
 			ref SDL_Rect dstrect
 		);
 
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for srcrect.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlit", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurface(
+			IntPtr src,
+			IntPtr srcrect,
+			IntPtr dst,
+			ref SDL_Rect dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for dstrect.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlit", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurface(
+			IntPtr src,
+			ref SDL_Rect srcrect,
+			IntPtr dst,
+			IntPtr dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for both SDL_Rects.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlit", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurface(
+			IntPtr src,
+			IntPtr srcrect,
+			IntPtr dst,
+			IntPtr dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface* */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlitScaled", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurfaceScaled(
+			IntPtr src,
+			ref SDL_Rect srcrect,
+			IntPtr dst,
+			ref SDL_Rect dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for srcrect.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlitScaled", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurfaceScaled(
+			IntPtr src,
+			IntPtr srcrect,
+			IntPtr dst,
+			ref SDL_Rect dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for dstrect.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlitScaled", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurfaceScaled(
+			IntPtr src,
+			ref SDL_Rect srcrect,
+			IntPtr dst,
+			IntPtr dstrect
+		);
+
+		/* src and dst refer to an SDL_Surface*
+		 * Internally, this function contains logic to use default values when
+		 * source and destination rectangles are passed as NULL.
+		 * This overload allows for IntPtr.Zero (null) to be passed for both SDL_Rects.
+		 */
+		[DllImport(nativeLibName, EntryPoint = "SDL_UpperBlitScaled", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_BlitSurfaceScaled(
+			IntPtr src,
+			IntPtr srcrect,
+			IntPtr dst,
+			IntPtr dstrect
+		);
+
 		/* src and dst are void* pointers */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_ConvertPixels(