Bug 1068 - Unify Surfaceless probing; Fix Surfaceless for OSX and Windows (probing, etc)

- Unify surfaceless probing
  GLDrawableFactoryImpl.probeSurfacelessCtx(..) implements surfaceless probing for all platforms

- Fix Surfaceless for OSX (probing, etc)
  - Handle 'surfaceless' mode in MacOSXCGLContext impl
  - MacOSXCGLDrawableFactory.getOrCreateSharedResourceImpl adds surfaceless probing

- Fix Surfaceless for Windows (probing, etc)
  - WindowsWGLContext.wglMakeContextCurrent(..)
    - Split release code into WindowsWGLContext.wglReleaseContext(..)
      allowing to handle zero HDC.
  - WindowsWGLGraphicsConfigurationFactory.updateGraphicsConfiguration(..)
    - Skip HDC -> PFD handling for
  - WindowsWGLDrawableFactory.createSharedResource adds surfaceless probing

1 files changed, 6 insertions, 1 deletions

diff --git a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
index 7c387827a..b688b288c 100644
--- a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
@@ -42,6 +42,7 @@ import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.CapabilitiesImmutable;
 import javax.media.nativewindow.NativeSurface;
 import javax.media.nativewindow.NativeWindowFactory;
+import javax.media.nativewindow.ProxySurface;
 import javax.media.nativewindow.VisualIDHolder;
 import javax.media.opengl.GLCapabilitiesImmutable;
 import javax.media.opengl.GLCapabilitiesChooser;
@@ -222,7 +223,11 @@ public class WindowsWGLGraphicsConfigurationFactory extends GLGraphicsConfigurat
         try {
             final long hdc = ns.getSurfaceHandle();
             if (0 == hdc) {
-                throw new GLException("Error: HDC is null");
+                if( !(ns instanceof ProxySurface) ||
+                    !((ProxySurface)ns).containsUpstreamOptionBits( ProxySurface.OPT_UPSTREAM_SURFACELESS ) ) {
+                    throw new GLException(String.format("non-surfaceless drawable has zero-handle (HDC): %s", ns.toString()));
+                }
+                return; // NOP .. will reach ns.unlockSurface()
             }
             final WindowsWGLGraphicsConfiguration config = (WindowsWGLGraphicsConfiguration) ns.getGraphicsConfiguration();