Fixed race conditions in Mac OS X onscreen context creation that

showed up after recent GLJPanel fix to clean up resource leaks.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@267 232f8b59-042b-4e1e-8c03-345bb8c30851

4 files changed, 30 insertions, 9 deletions

diff --git a/src/net/java/games/jogl/impl/macosx/MacOSXDummyGLContext.java b/src/net/java/games/jogl/impl/macosx/MacOSXDummyGLContext.java
index 9b8f02660..f32c8bb15 100644
--- a/src/net/java/games/jogl/impl/macosx/MacOSXDummyGLContext.java
+++ b/src/net/java/games/jogl/impl/macosx/MacOSXDummyGLContext.java
@@ -106,7 +106,7 @@ class MacOSXDummyGLContext extends MacOSXGLContext
     throw new GLException("Should not call this");
   }
 
-  protected void create() {
+  protected boolean create() {
     throw new GLException("Should not call this");
   }
 	
diff --git a/src/net/java/games/jogl/impl/macosx/MacOSXGLContext.java b/src/net/java/games/jogl/impl/macosx/MacOSXGLContext.java
index cfa5c3d99..684f82a53 100644
--- a/src/net/java/games/jogl/impl/macosx/MacOSXGLContext.java
+++ b/src/net/java/games/jogl/impl/macosx/MacOSXGLContext.java
@@ -121,7 +121,7 @@ public abstract class MacOSXGLContext extends GLContext
    * Creates and initializes an appropriate OpenGl nsContext. Should only be
    * called by {@link makeCurrent(Runnable)}.
    */
-  protected void create() {
+  protected boolean create() {
     MacOSXGLContext other = (MacOSXGLContext) GLContextShareSet.getShareContext(this);
     long share = 0;
     if (other != null) {
@@ -130,6 +130,7 @@ public abstract class MacOSXGLContext extends GLContext
         throw new GLException("GLContextShareSet returned an invalid OpenGL context");
       }
     }
+    int[] viewNotReady = new int[1];
     nsContext = CGL.createContext(share,
                                   nsView,
                                   capabilities.getDoubleBuffered() ? 1 : 0,
@@ -144,18 +145,29 @@ public abstract class MacOSXGLContext extends GLContext
                                   capabilities.getAccumBlueBits(),
                                   capabilities.getAccumAlphaBits(),
                                   capabilities.getSampleBuffers() ? 1 : 0,
-                                  capabilities.getNumSamples());
+                                  capabilities.getNumSamples(),
+                                  viewNotReady);
     if (nsContext == 0) {
+      if (viewNotReady[0] == 1) {
+        if (DEBUG) {
+          System.err.println("!!! View not ready for " + getClass().getName());
+        }
+        // View not ready at the window system level -- this is OK
+        return false;
+      }
       throw new GLException("Error creating nsContext");
     }
 	//updater = CGL.updateContextRegister(nsContext, nsView); // gznote: not thread safe yet!
     GLContextShareSet.contextCreated(this);
+    return true;
   }    
 	
   protected synchronized boolean makeCurrent(Runnable initAction) throws GLException {
       boolean created = false;
       if (nsContext == 0) {
-        create();
+        if (!create()) {
+          return false;
+        }
         if (DEBUG) {
           System.err.println("!!! Created GL nsContext for " + getClass().getName());
         }
diff --git a/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLContext.java b/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLContext.java
index 401a657fe..f28a302b1 100644
--- a/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLContext.java
+++ b/src/net/java/games/jogl/impl/macosx/MacOSXOnscreenGLContext.java
@@ -131,6 +131,9 @@ public class MacOSXOnscreenGLContext extends MacOSXGLContext {
             (MacOSXPbufferGLContext) pbuffersToInstantiate.remove(pbuffersToInstantiate.size() - 1);
           ctx.createPbuffer(nsView, nsContext);
         }
+      } else {
+        // View might not have been ready
+        unlockSurface();
       }
       return ret;
     } catch (RuntimeException e) {
diff --git a/src/net/java/games/jogl/impl/macosx/MacOSXPbufferGLContext.java b/src/net/java/games/jogl/impl/macosx/MacOSXPbufferGLContext.java
index 8e65ce1f3..bc046bcc1 100644
--- a/src/net/java/games/jogl/impl/macosx/MacOSXPbufferGLContext.java
+++ b/src/net/java/games/jogl/impl/macosx/MacOSXPbufferGLContext.java
@@ -65,13 +65,13 @@ public class MacOSXPbufferGLContext extends MacOSXGLContext {
       renderTarget = GL.GL_TEXTURE_2D;
     }
 		
-    this.pBuffer = CGL.createPBuffer(renderTarget, width, height);
-    if (this.pBuffer == 0) {
+    pBuffer = CGL.createPBuffer(renderTarget, width, height);
+    if (pBuffer == 0) {
       throw new GLException("pbuffer creation error: CGL.createPBuffer() failed");
     }
 	
     if (DEBUG) {
-      System.err.println("Created pbuffer " + width + " x " + height);
+      System.err.println("Created pbuffer 0x" + Long.toHexString(pBuffer) + ", " + width + " x " + height + " for " + this);
     }
   }
 
@@ -79,6 +79,9 @@ public class MacOSXPbufferGLContext extends MacOSXGLContext {
     created = false;
 
     if (pBuffer == 0) {
+      if (DEBUG) {
+        System.err.println("Pbuffer not instantiated yet for " + this);
+      }
       // pbuffer not instantiated yet
       return false;
     }
@@ -151,10 +154,13 @@ public class MacOSXPbufferGLContext extends MacOSXGLContext {
     return (1<<power);
   }
 
-  protected void create() {
-    super.create();
+  protected boolean create() {
+    if (!super.create()) {
+      return false;
+    }
     created = true;
     // Must now associate the pbuffer with our newly-created context
     CGL.setContextPBuffer(nsContext, pBuffer);
+    return true;
   }
 }