Cleanup GLContext special entries: getOffscreenContextPixelDataType(), getOffscreenContextReadBuffer(), .. ; Add GLFBODrawable API entries for multi buffering (no impl. yet); GLJPanel 1st simplification using offscreen drawable

- Cleanup GLContext special entries: getOffscreenContextPixelDataType(), getOffscreenContextReadBuffer(), .. ;
  - add: getDefaultReadBuffer() (-> exposed via GLBase as well)
  - add: isGLOrientationFlippedVertical()
  - add: getDefaultPixelDataType()
  - removed impl: getOffscreenContextPixelDataType()
  - removed impl: getOffscreenContextReadBuffer()
  - removed impl: offscreenImageNeedsVerticalFlip()

- Add GLFBODrawable API entries for multi buffering (no impl. yet);
  - TODO: Add implementation code in GLFBODrawableImpl

- GLJPanel 1st simplification using FBO
  - Use above new GL/GLContext entries
  - Fix: getNativeSurface() and getHandle()
  - TODO:
    - Remove distinction of 'pbuffer' and 'software',
    - Use GLDrawableFactory.createOffscreenDrawable(..)
    - Use GL for FBO swapping

2 files changed, 1 insertions, 30 deletions

diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
index 76e0bc15c..bf1045132 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
@@ -619,20 +619,6 @@ public abstract class X11GLXContext extends GLContextImpl {
   }
 
   @Override
-  public int getOffscreenContextPixelDataType() {
-    throw new GLException("Should not call this");
-  }
-
-  public int getOffscreenContextReadBuffer() {
-    throw new GLException("Should not call this");
-  }
-
-  @Override
-  public boolean offscreenImageNeedsVerticalFlip() {
-    throw new GLException("Should not call this");
-  }
-
-  @Override
   public void bindPbufferToTexture() {
     throw new GLException("Should not call this");
   }
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11PixmapGLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11PixmapGLXContext.java
index 96d0f18dc..1cfb7e427 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11PixmapGLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11PixmapGLXContext.java
@@ -50,24 +50,9 @@ public class X11PixmapGLXContext extends X11GLXContext {
   }
 
   @Override
-  public int getOffscreenContextPixelDataType() {
+  public int getDefaultPixelDataType() {
     GL gl = getGL();
     return gl.isGL2GL3()?GL2GL3.GL_UNSIGNED_INT_8_8_8_8_REV:GL.GL_UNSIGNED_SHORT_5_5_5_1;
   }
 
-  @Override
-  public int getOffscreenContextReadBuffer() {
-    GLCapabilitiesImmutable caps = (GLCapabilitiesImmutable)drawable.getNativeSurface().getGraphicsConfiguration().getChosenCapabilities();
-    if (caps.getDoubleBuffered()) {
-      return GL.GL_BACK;
-    }
-    return GL.GL_FRONT;
-  }
-
-  @Override
-  public boolean offscreenImageNeedsVerticalFlip() {
-    // There doesn't seem to be a way to do this in the construction
-    // of the Pixmap or GLXPixmap
-    return true;
-  }
 }