diff --git a/src/SDL2.cs b/src/SDL2.cs
index 434d1ed..2a08eaa 100644
--- a/src/SDL2.cs
+++ b/src/SDL2.cs
@@ -1894,6 +1894,14 @@ namespace SDL2
 			int count
 		);
 
+		/* renderer refers to an SDL_Renderer* */
+		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
+		public static extern void SDL_RenderGetLogicalSize(
+			IntPtr renderer,
+			out int w,
+			out int h
+		);
+
 		/* renderer refers to an SDL_Renderer* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderGetViewport(
@@ -1915,6 +1923,14 @@ namespace SDL2
 			int pitch
 		);
 
+		/* renderer refers to an SDL_Renderer* */
+		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
+		public static extern int SDL_RenderSetLogicalSize(
+			IntPtr renderer,
+			int w,
+			int h
+		);
+
 		/* renderer refers to an SDL_Renderer* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderSetViewport(