j3dcore: add members and helpers for future FBOlayer work

Extracted from a patch by August Lammersdorf.

[HSH - any mistakes here are mine]
Signed-off-by: August Lammersdorf <[email protected]>
Signed-off-by: Harvey Harrison <[email protected]>

2 files changed, 55 insertions, 9 deletions

diff --git a/src/classes/share/javax/media/j3d/JoglDrawable.java b/src/classes/share/javax/media/j3d/JoglDrawable.java
index 7981b1b..1ce492e 100644
--- a/src/classes/share/javax/media/j3d/JoglDrawable.java
+++ b/src/classes/share/javax/media/j3d/JoglDrawable.java
@@ -26,19 +26,38 @@
 
 package javax.media.j3d;
 
+import javax.media.nativewindow.NativeWindow;
 import javax.media.opengl.GLDrawable;
 
 /**
  * Drawable class for the Jogl rendering pipeline.
  */
 class JoglDrawable implements Drawable {
-  private GLDrawable  drawable;
+	private GLDrawable drawable;
+	private NativeWindow nativeWindow;
 
-  JoglDrawable(GLDrawable drawable) {
-    this.drawable = drawable;
-  }
+	JoglDrawable(GLDrawable drawable, NativeWindow nativeWindow) {
+		this.drawable = drawable;
+		this.nativeWindow = nativeWindow;
+	}
 
-  GLDrawable getGLDrawable() {
-    return drawable;
-  }
+	GLDrawable getGLDrawable() {
+		return drawable;
+	}
+
+	void setGLDrawable(GLDrawable drawable) {
+		this.drawable = drawable;
+	}
+
+	NativeWindow getNativeWindow() {
+		return nativeWindow;
+	}
+
+	void destroyNativeWindow() {
+		if (nativeWindow == null)
+			return;
+
+		nativeWindow.destroy();
+		nativeWindow = null;
+	}
 }
diff --git a/src/classes/share/javax/media/j3d/JoglPipeline.java b/src/classes/share/javax/media/j3d/JoglPipeline.java
index 714c013..430c970 100644
--- a/src/classes/share/javax/media/j3d/JoglPipeline.java
+++ b/src/classes/share/javax/media/j3d/JoglPipeline.java
@@ -54,6 +54,9 @@ import java.util.regex.Pattern;
 import com.jogamp.nativewindow.awt.AWTGraphicsConfiguration;
 import com.jogamp.nativewindow.awt.AWTGraphicsDevice;
 import com.jogamp.nativewindow.awt.AWTGraphicsScreen;
+import com.jogamp.nativewindow.awt.JAWTWindow;
+import com.jogamp.opengl.FBObject;
+
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.CapabilitiesChooser;
 import javax.media.nativewindow.CapabilitiesImmutable;
@@ -70,6 +73,7 @@ import javax.media.opengl.GLContext;
 import javax.media.opengl.GLDrawable;
 import javax.media.opengl.GLDrawableFactory;
 import javax.media.opengl.GLException;
+import javax.media.opengl.GLFBODrawable;
 import javax.media.opengl.GLPbuffer;
 import javax.media.opengl.GLProfile;
 import javax.media.opengl.Threading;
@@ -6178,7 +6182,7 @@ class JoglPipeline extends Pipeline {
 					indexChooser, awtGraphicsScreen, VisualIDHolder.VID_UNDEFINED);
 			NativeWindow nativeWindow = NativeWindowFactory.getNativeWindow(cv, awtGraphicsConfiguration);
 			draw = GLDrawableFactory.getFactory(profile).createGLDrawable(nativeWindow);
-            cv.drawable = new JoglDrawable(draw);
+            cv.drawable = new JoglDrawable(draw, null);
         } else {
             draw = drawable(cv.drawable);
         }
@@ -6311,7 +6315,7 @@ class JoglPipeline extends Pipeline {
         //FIXME use the real AWTGraphicsDevice
         GLPbuffer pbuffer = GLDrawableFactory.getFactory(profile).createGLPbuffer(GLDrawableFactory.getDesktopFactory().getDefaultDevice() ,caps, null,width, height, GLContext.getCurrent());
 
-        return new JoglDrawable(pbuffer);
+        return new JoglDrawable(pbuffer, null);
     }
 
     void destroyOffScreenBuffer(Canvas3D cv, Context ctx, Drawable drawable) {
@@ -7148,6 +7152,29 @@ void swapBuffers(Canvas3D cv, Context ctx, Drawable drawable) {
         }
     }
 
+private boolean isOffscreenLayerSurfaceEnabled(Canvas3D cv) {
+	if (cv.drawable == null || cv.offScreen)
+		return false;
+
+	JoglDrawable joglDrawble = (JoglDrawable)cv.drawable;
+	final JAWTWindow jawtwindow = (JAWTWindow)joglDrawble.getNativeWindow();
+	if (jawtwindow == null)
+		return false;
+
+	return jawtwindow.isOffscreenLayerSurfaceEnabled();
+}
+
+private boolean hasFBObjectSizeChanged(JoglDrawable jdraw, int width, int height) {
+	if (!(jdraw.getGLDrawable() instanceof GLFBODrawable))
+		return false;
+
+	FBObject fboBack = ((GLFBODrawable)jdraw.getGLDrawable()).getFBObject(GL.GL_BACK);
+	if (fboBack == null)
+		return false;
+
+	return (width != fboBack.getWidth() || height != fboBack.getHeight());
+}
+
     // The native method for setting the Viewport.
     void setViewport(Context ctx, int x, int y, int width, int height) {
         if (VERBOSE) System.err.println("JoglPipeline.setViewport()");