Fixed Issue 259: need a copy context

Added and specified GLContext.copy() and supplied implementations on
Windows, X11 and Mac OS X platforms. New code is untested at this
time. May need to make subsequent changes on X11 and Mac platforms
where new code has not been compiled yet.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1075 232f8b59-042b-4e1e-8c03-345bb8c30851

3 files changed, 47 insertions, 0 deletions

diff --git a/src/classes/com/sun/opengl/impl/macosx/MacOSXGLContext.java b/src/classes/com/sun/opengl/impl/macosx/MacOSXGLContext.java
index 16855efb8..02bf81f2e 100644
--- a/src/classes/com/sun/opengl/impl/macosx/MacOSXGLContext.java
+++ b/src/classes/com/sun/opengl/impl/macosx/MacOSXGLContext.java
@@ -277,6 +277,18 @@ public abstract class MacOSXGLContext extends GLContextImpl
     return (nsContext != 0);
   }
 	
+  public void copy(GLContext source, int mask) throws GLException {
+    long dst = getNSContext();
+    long src = ((MacOSXGLContext) source).getNSContext();
+    if (src == 0) {
+      throw new GLException("Source OpenGL context has not been created");
+    }
+    if (dst == 0) {
+      throw new GLException("Destination OpenGL context has not been created");
+    }
+    CGL.copyContext(dst, src, mask);
+  }
+
   protected void resetGLFunctionAvailability()
   {
     super.resetGLFunctionAvailability();
diff --git a/src/classes/com/sun/opengl/impl/windows/WindowsGLContext.java b/src/classes/com/sun/opengl/impl/windows/WindowsGLContext.java
index 7a4b73351..1276aea92 100644
--- a/src/classes/com/sun/opengl/impl/windows/WindowsGLContext.java
+++ b/src/classes/com/sun/opengl/impl/windows/WindowsGLContext.java
@@ -207,6 +207,20 @@ public class WindowsGLContext extends GLContextImpl {
     return (hglrc != 0);
   }
 
+  public void copy(GLContext source, int mask) throws GLException {
+    long dst = getHGLRC();
+    long src = ((WindowsGLContext) source).getHGLRC();
+    if (src == 0) {
+      throw new GLException("Source OpenGL context has not been created");
+    }
+    if (dst == 0) {
+      throw new GLException("Destination OpenGL context has not been created");
+    }
+    if (!WGL.wglCopyContext(src, dst, mask)) {
+      throw new GLException("wglCopyContext failed");
+    }
+  }
+
   protected void resetGLFunctionAvailability() {
     super.resetGLFunctionAvailability();
     if (DEBUG) {
diff --git a/src/classes/com/sun/opengl/impl/x11/X11GLContext.java b/src/classes/com/sun/opengl/impl/x11/X11GLContext.java
index 0ed5eaebb..17b2cca40 100644
--- a/src/classes/com/sun/opengl/impl/x11/X11GLContext.java
+++ b/src/classes/com/sun/opengl/impl/x11/X11GLContext.java
@@ -193,6 +193,27 @@ public abstract class X11GLContext extends GLContextImpl {
     return (context != 0);
   }
 
+  public void copy(GLContext source, int mask) throws GLException {
+    long dst = getContext();
+    long src = ((X11GLContext) source).getContext();
+    if (src == 0) {
+      throw new GLException("Source OpenGL context has not been created");
+    }
+    if (dst == 0) {
+      throw new GLException("Destination OpenGL context has not been created");
+    }
+    if (mostRecentDisplay == 0) {
+      throw new GLException("Connection to X display not yet set up");
+    }
+    lockToolkit();
+    try {
+      GLX.glXCopyContext(mostRecentDisplay, src, dst, mask);
+      // Should check for X errors and raise GLException
+    } finally {
+      unlockToolkit();
+    }
+  }
+
   protected void resetGLFunctionAvailability() {
     super.resetGLFunctionAvailability();
     if (DEBUG) {