Save screenshots via the frame buffer.

OpenRA.Platforms.Default/Sdl2GraphicsContext.cs

@@ -10,8 +10,6 @@
 #endregion
 
 using System;
-using System.Threading;
-using OpenRA.FileFormats;
 using OpenRA.Graphics;
 using OpenRA.Primitives;
 using SDL2;
@@ -118,51 +116,6 @@ namespace OpenRA.Platforms.Default
 			OpenGL.CheckGLError();
 		}
 
-		public void SaveScreenshot(string path)
-		{
-			var s = window.SurfaceSize;
-			var raw = new byte[s.Width * s.Height * 4];
-
-			OpenGL.glPushClientAttrib(OpenGL.GL_CLIENT_PIXEL_STORE_BIT);
-
-			OpenGL.glPixelStoref(OpenGL.GL_PACK_ROW_LENGTH, s.Width);
-			OpenGL.glPixelStoref(OpenGL.GL_PACK_ALIGNMENT, 1);
-
-			unsafe
-			{
-				fixed (byte* pRaw = raw)
-					OpenGL.glReadPixels(0, 0, s.Width, s.Height,
-						OpenGL.GL_BGRA, OpenGL.GL_UNSIGNED_BYTE, (IntPtr)pRaw);
-			}
-
-			OpenGL.glFinish();
-			OpenGL.glPopClientAttrib();
-
-			ThreadPool.QueueUserWorkItem(_ =>
-			{
-				// Convert GL pixel data into format expected by png
-				// - Flip vertically
-				// - BGRA to RGBA
-				// - Force A to 255 (no transparent pixels!)
-				var data = new byte[raw.Length];
-				for (var y = 0; y < s.Height; y++)
-				{
-					for (var x = 0; x < s.Width; x++)
-					{
-						var iData = 4 * (y * s.Width + x);
-						var iRaw = 4 * ((s.Height - y - 1) * s.Width + x);
-						data[iData] = raw[iRaw + 2];
-						data[iData + 1] = raw[iRaw + 1];
-						data[iData + 2] = raw[iRaw + 0];
-						data[iData + 3] = byte.MaxValue;
-					}
-				}
-
-				var screenshot = new Png(data, window.SurfaceSize.Width, window.SurfaceSize.Height);
-				screenshot.Save(path);
-			});
-		}
-
 		public void Present()
 		{
 			VerifyThreadAffinity();