FBO/Offscreen: Use most simple GLCapabilities for GLFBODrawableImpl's underlying dummy surface/drawable

If stencil or MSAA has been selected, the underlying dummy drawable doesn't need to have this configuration,
i.e. doesn't need to waste the resources.

- Creation of the dummy surface/drawable uses a simple GLCapabilities

- Requested FBO GLCapabilities is being passes down to the dummy drawable

- GLFBODrawableImpl ctor leaves caps untouched

- GLFBODrawableImpl.initialize(boolean realize)
  - realize == true: using the requested FBO caps and setting it in the parent dummy drawable
  - realize == false: restore the original caps of dummy drawable

1 files changed, 6 insertions, 4 deletions

diff --git a/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java b/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
index 311690f1d..13960ecdd 100644
--- a/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
@@ -54,13 +54,15 @@ import javax.media.opengl.GLProfile;
 public abstract class GLDrawableImpl implements GLDrawable {
   protected static final boolean DEBUG = Debug.debug("GLDrawable");
 
-  protected GLDrawableImpl(GLDrawableFactory factory,
-                           NativeSurface comp,
-                           boolean realized) {
+  protected GLDrawableImpl(GLDrawableFactory factory, NativeSurface comp, boolean realized) {
+      this(factory, comp, (GLCapabilitiesImmutable) comp.getGraphicsConfiguration().getRequestedCapabilities(), realized);
+  }
+  
+  protected GLDrawableImpl(GLDrawableFactory factory, NativeSurface comp, GLCapabilitiesImmutable requestedCapabilities, boolean realized) {
       this.factory = factory;
       this.surface = comp;
       this.realized = realized;
-      this.requestedCapabilities = (GLCapabilitiesImmutable) surface.getGraphicsConfiguration().getRequestedCapabilities();
+      this.requestedCapabilities = requestedCapabilities;
   }
 
   /**