Bug 1068, 1096: Unify EGL surface related code in EGLSurface; Add notion of 'Surfaceless Upstream Surface'

Preparation for Bug 1068: GLContext creation and makeCurrent without default framebuffer

- Unify EGL surface related code in EGLSurface
  - EGLWrappedSurface -> EGLSurface,
    which utilizes a more straight forward
    foreign upstream surface (X11, GDI, ..) to EGL mapping.
  This also addresses Bug 1096, i.e. EGL Cleanup.

- Add notion of 'Surfaceless Upstream Surface'
  - Add surfaceless 'fake' upstream surface hooks:
    - EGLUpstreamSurfacelessHook
    - X11UpstreamSurfacelessHook
    Utilizing the ProxySurface option bit 'OPT_UPSTREAM_SURFACELESS'
    signaling usage of 'no surface'.

  - Add GLDrawableFactoryImpl.createSurfacelessImpl(..)

1 files changed, 8 insertions, 0 deletions

diff --git a/src/nativewindow/classes/javax/media/nativewindow/ProxySurface.java b/src/nativewindow/classes/javax/media/nativewindow/ProxySurface.java
index 7a69b9a40..377dd55cd 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/ProxySurface.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/ProxySurface.java
@@ -65,6 +65,14 @@ public interface ProxySurface extends MutableSurface {
      */
     public static final int OPT_UPSTREAM_WINDOW_INVISIBLE = 1 << 8;
 
+    /**
+     * Implementation specific bitvalue stating the upstream's {@link NativeSurface}'s zero handle is valid.
+     * @see #addUpstreamOptionBits(int)
+     * @see #clearUpstreamOptionBits(int)
+     * @see #getUpstreamOptionBits()
+     */
+    public static final int OPT_UPSTREAM_SURFACELESS = 1 << 9;
+
     /** Allow redefining the AbstractGraphicsConfiguration */
     public void setGraphicsConfiguration(AbstractGraphicsConfiguration cfg);