1. Fixed a problem in setOffScreenBuffer that prevented native off-screen buffer from being created after a live scene graph was removed. With yesterday's fix, this caused a deadlock to occur.

2. Cleanup in construction of the MasterControl object.


git-svn-id: https://svn.java.net/svn/j3d-core~svn/trunk@68 ba19aa83-45c5-6ac9-afd3-db810772062c

3 files changed, 14 insertions, 20 deletions

diff --git a/src/classes/share/javax/media/j3d/Canvas3D.java b/src/classes/share/javax/media/j3d/Canvas3D.java
index 5b2af1f..4505897 100644
--- a/src/classes/share/javax/media/j3d/Canvas3D.java
+++ b/src/classes/share/javax/media/j3d/Canvas3D.java
@@ -1127,8 +1127,6 @@ public class Canvas3D extends Canvas {
 		(J3dI18N.getString("Canvas3D17"));
 	}
 
-	VirtualUniverse.createMC();
-
 	this.offScreen = offScreen;
 	this.graphicsConfiguration = graphicsConfiguration;
 
diff --git a/src/classes/share/javax/media/j3d/MasterControl.java b/src/classes/share/javax/media/j3d/MasterControl.java
index 04cf953..e6ddcc3 100644
--- a/src/classes/share/javax/media/j3d/MasterControl.java
+++ b/src/classes/share/javax/media/j3d/MasterControl.java
@@ -2792,6 +2792,19 @@ class MasterControl {
 	J3dDebug.doAssert((Screen3D.deviceRendererMap.get(gd) != null),
 			  "Screen3D.deviceRendererMap.get(gd) != null");
 
+	// Create the master control thread if it isn't already created
+	boolean needToSetWork = false;
+	synchronized (mcThreadLock) {
+	    if (mcThread == null) {
+		//System.err.println("Calling createMasterControlThread()");
+		createMasterControlThread();
+		needToSetWork = true;
+	    }
+	}
+	if (needToSetWork) {
+	    setWork();
+	}
+
 	// Fix for Issue 72 : call createRenderer rather than getting
 	// the renderer from the canvas.screen object
 	Renderer rdr = createRenderer(c.graphicsConfiguration);
diff --git a/src/classes/share/javax/media/j3d/VirtualUniverse.java b/src/classes/share/javax/media/j3d/VirtualUniverse.java
index 9d9273d..26a34db 100644
--- a/src/classes/share/javax/media/j3d/VirtualUniverse.java
+++ b/src/classes/share/javax/media/j3d/VirtualUniverse.java
@@ -144,9 +144,6 @@ public class VirtualUniverse extends Object {
     // Root ThreadGroup for creating Java 3D threads
     static ThreadGroup rootThreadGroup;
 
-    // Lock for MasterControl Object creation
-    static Object mcLock = new Object();
-    
     // Properties object for getProperties
     private static J3dQueryProps properties = null;
 
@@ -192,20 +189,6 @@ public class VirtualUniverse extends Object {
 
     }
 
-    static void createMC() {
-	synchronized (mcLock) {
-	    if (mc == null) {
-		mc = new MasterControl();
-	    }
-	}
-    }
-
-    static void destroyMC() {
-	synchronized (mcLock) {
-	    mc = null;
-	}
-    }
-
     /**
      * Initialize the native interface and anything else that needs
      * to be initialized.
@@ -252,7 +235,7 @@ public class VirtualUniverse extends Object {
 	// Load the native libraries and create the static
 	// MasterControl object
 	MasterControl.loadLibraries();
-	createMC();
+	mc = new MasterControl();
 
 	// Print out debugging information for debug builds
 	if(VersionInfo.isDebug) {