SIrrlichtCreationParameters::IgnoreInput set to false works again on X11.

Thanks @ Victor Gaydov for report + patch + very good test cases! (bug #401)
This had been broken since Irrlicht 1.6
The reason was that Irrlicht 1.6 wanted to ensure Irrlicht renders to given parent window instead of creating a child window in the parent window. That still works, but only with SIrrlichtCreationParameters::IgnoreInput set to true.
Added a few comments about further improvements as rendering to the given parent Window is likely also possible for this case, but that will need more work.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6237 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

@@ -1,5 +1,8 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- SIrrlichtCreationParameters::IgnoreInput set to false works again on X11. 
+  Thanks @ Victor Gaydov for report + patch + very good test cases! (bug #401)
+  This had been broken since Irrlicht 1.6
 - Add steer parameter to CSceneNodeAnimatorFollowSpline which allows rotating node toward direction of movement. 
   Thanks @ Bate for the patch (patch #175)
 - Add a workaround for XWarpPointer bug that causes mouse to jump when users have set a Coordinate Transformation Matrix for their mouse on X11.

source/Irrlicht/CIrrDeviceLinux.cpp

@@ -522,12 +522,25 @@ bool CIrrDeviceLinux::createWindow()
 		XWindow = (Window)CreationParams.WindowId;
 		if (!CreationParams.IgnoreInput)
 		{
-			XCreateWindow(XDisplay,
+			// Note: This might be further improved by using a InputOnly window instead of InputOutput.
+			// I think then it should be possible to render into the given parent window instead of
+			// creating a child-window.
+			// That could also be a third option for IgnoreInput in the CreationParams.
+			// But we need another window variable then and have to split input/output in
+			// the rest of the device code.
+			// Also... this does possibly leak.
+			Window child_window = XCreateWindow(XDisplay,
 					XWindow,
 					0, 0, Width, Height, 0, VisualInfo->depth,
 					InputOutput, VisualInfo->visual,
 					CWBorderPixel | CWColormap | CWEventMask,
 					&WndAttributes);
+
+			// do not forget to map new window
+			XMapWindow(XDisplay, child_window);
+
+			// overwrite device window id
+			XWindow = child_window;
 		}
 		XWindowAttributes wa;
 		XGetWindowAttributes(XDisplay, XWindow, &wa);