Fixed Issue 119: Dual-head problems on Windows XP

Added needed synchronization around creation of dummy windows for
wglChoosePixelFormatARB calls. Fixed race condition in StaticGLInfo
initialization.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@170 232f8b59-042b-4e1e-8c03-345bb8c30851

2 files changed, 5 insertions, 4 deletions

diff --git a/src/net/java/games/gluegen/opengl/BuildStaticGLInfo.java b/src/net/java/games/gluegen/opengl/BuildStaticGLInfo.java
index ed0c83445..338ae1d3f 100644
--- a/src/net/java/games/gluegen/opengl/BuildStaticGLInfo.java
+++ b/src/net/java/games/gluegen/opengl/BuildStaticGLInfo.java
@@ -196,7 +196,7 @@ public class BuildStaticGLInfo
 
     output.println("  // maps function names to the extension string or OpenGL");
     output.println("  // specification version string to which they correspond.");
-    output.println("  private static HashMap funcToAssocMap = null;");
+    output.println("  private static HashMap funcToAssocMap;");
     output.println();
 
     output.println("  /**");
@@ -221,12 +221,11 @@ public class BuildStaticGLInfo
     output.println("   */");
     output.println("  public static String getFunctionAssociation(String glFunctionName)");
     output.println("  {");
-    output.println("    if (funcToAssocMap == null) { init(); }");
     output.println("    return (String)funcToAssocMap.get(glFunctionName);");
     output.println("  }");
     output.println();
 
-    output.println("  private static void init()");
+    output.println("  static");
     output.println("  {");
     output.println("    funcToAssocMap = new HashMap(1536); // approximate max capacity");
     output.println("    String group;");
diff --git a/src/net/java/games/jogl/impl/windows/WindowsGLContextFactory.java b/src/net/java/games/jogl/impl/windows/WindowsGLContextFactory.java
index a4f588158..726091bf1 100644
--- a/src/net/java/games/jogl/impl/windows/WindowsGLContextFactory.java
+++ b/src/net/java/games/jogl/impl/windows/WindowsGLContextFactory.java
@@ -263,7 +263,9 @@ public class WindowsGLContextFactory extends GLContextFactory {
     
     public void run() {
       // Create a native window and device context
-      HWND = WGL.CreateDummyWindow( rectangle.x, rectangle.y, rectangle.width, rectangle.height );
+      synchronized (WindowsGLContextFactory.class) {
+        HWND = WGL.CreateDummyWindow( rectangle.x, rectangle.y, rectangle.width, rectangle.height );
+      }
       HDC = WGL.GetDC( HWND );
       
       // Start the message pump at shutdown