com.jogamp.opengl.swt

Class GLCanvas

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Control

org.eclipse.swt.widgets.Scrollable

org.eclipse.swt.widgets.Composite

org.eclipse.swt.widgets.Canvas

com.jogamp.opengl.swt.GLCanvas

All Implemented Interfaces:

GLAutoDrawable, GLDrawable, org.eclipse.swt.graphics.Drawable

public class GLCanvas
extends org.eclipse.swt.widgets.Canvas
implements GLAutoDrawable

Native SWT Canvas implementing GLAutoDrawable

Note: To employ custom GLCapabilities, NewtCanvasSWT shall be used instead.

Field Summary

Fields inherited from class org.eclipse.swt.widgets.Composite

embeddedHandle

Fields inherited from class org.eclipse.swt.widgets.Widget

handle

Fields inherited from interface javax.media.opengl.GLAutoDrawable

SCREEN_CHANGE_ACTION_ENABLED

Constructor Summary

Constructors

Constructor and Description
GLCanvas(org.eclipse.swt.widgets.Composite parent, int style, GLCapabilitiesImmutable caps, GLCapabilitiesChooser chooser, GLContext shareWith) Creates a new SWT GLCanvas.

Method Summary

Methods

Modifier and Type	Method and Description
void	addGLEventListener(GLEventListener arg0) Adds a GLEventListener to the end of this drawable queue.
void	addGLEventListener(int arg0, GLEventListener arg1) Adds a GLEventListener at the given index of this drawable queue.
static GLCanvas	create(org.eclipse.swt.widgets.Composite parent, int style, GLCapabilitiesImmutable caps, GLCapabilitiesChooser chooser, GLContext shareWith) Creates an instance using GLCanvas(Composite, int, GLCapabilitiesImmutable, GLCapabilitiesChooser, GLContext) on the SWT thread.
GLContext	createContext(GLContext shareWith) Creates a new context for drawing to this drawable that will optionally share display lists and other server-side OpenGL objects with the specified GLContext.
void	destroy() Destroys all resources associated with this GLAutoDrawable, inclusive the GLContext.
void	display() Causes OpenGL rendering to be performed for this GLAutoDrawable in the following order: Calling display(..) for all registered GLEventListeners.
void	dispose()
GLAnimatorControl	getAnimator()
boolean	getAutoSwapBufferMode() Indicates whether automatic buffer swapping is enabled for this drawable.
GLCapabilitiesImmutable	getChosenGLCapabilities() Fetches the GLCapabilitiesImmutable corresponding to the chosen OpenGL capabilities (pixel format / visual / GLProfile) for this drawable. On some platforms, the pixel format is not directly associated with the drawable; a best attempt is made to return a reasonable value in this case.
GLContext	getContext() Returns the context associated with this drawable.
int	getContextCreationFlags()
GLDrawableFactory	getFactory() Return the GLDrawableFactory being used to create this instance.
GL	getGL() Returns the GL pipeline object this GLAutoDrawable uses.
GLProfile	getGLProfile() Fetches the GLProfile for this drawable.
long	getHandle() This is the GL/Windowing drawable handle. It is usually the NativeSurface.getSurfaceHandle(), ie the native surface handle of the underlying windowing toolkit. However, on X11/GLX this reflects a GLXDrawable, which represents a GLXWindow, GLXPixmap, or GLXPbuffer. On EGL, this represents the EGLSurface.
int	getHeight() Returns the current height of this GLDrawable.
NativeSurface	getNativeSurface() Returns the underlying native surface which surface handle represents this OpenGL drawable's native resource.
GLCapabilitiesImmutable	getRequestedGLCapabilities() Accessor for the GLCapabilities that were requested (via the constructor parameter).
Object	getUpstreamWidget() Method may return the upstream UI toolkit object holding this GLAutoDrawable instance, if exist.
int	getWidth() Returns the current width of this GLDrawable.
boolean	invoke(boolean wait, GLRunnable run) Enqueues a one-shot GLRunnable, which will be executed within the next GLAutoDrawable.display() call after all registered GLEventListeners display(GLAutoDrawable) methods has been called.
boolean	isRealized()
static void	main(String[] args)
void	removeGLEventListener(GLEventListener arg0) Removes a GLEventListener from this drawable.
GLEventListener	removeGLEventListener(int index) Removes a GLEventListener at the given index from this drawable.
void	setAnimator(GLAnimatorControl arg0) Registers the usage of an animator, an GLAnimatorControl implementation.
void	setAutoSwapBufferMode(boolean arg0) Enables or disables automatic buffer swapping for this drawable.
GLContext	setContext(GLContext newCtx) Associate a new context to this drawable and also propagates the context/drawable switch by calling newCtx.setGLDrawable(drawable, true);.
void	setContextCreationFlags(int arg0)
GL	setGL(GL arg0) Sets the GL pipeline object this GLAutoDrawable uses.
void	setRealized(boolean arg0) Indicates to on-screen GLDrawable implementations whether the underlying window has been created and can be drawn into.
void	swapBuffers() Swaps the front and back buffers of this drawable.
void	update()

Methods inherited from class org.eclipse.swt.widgets.Canvas

drawBackground, getCaret, getIME, scroll, setCaret, setFont, setIME

Methods inherited from class org.eclipse.swt.widgets.Composite

changed, computeSize, drawBackground, getBackgroundMode, getChildren, getClientArea, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList

Methods inherited from class org.eclipse.swt.widgets.Scrollable

computeTrim, getBorderWidth, getHorizontalBar, getScrollbarsMode, getVerticalBar

Methods inherited from class org.eclipse.swt.widgets.Control

addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse

Methods inherited from class org.eclipse.swt.widgets.Widget

addDisposeListener, addListener, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, reskin, setData, setData, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.media.opengl.GLDrawable

toString

Constructor Detail

GLCanvas

public GLCanvas(org.eclipse.swt.widgets.Composite parent,
        int style,
        GLCapabilitiesImmutable caps,
        GLCapabilitiesChooser chooser,
        GLContext shareWith)

Creates a new SWT GLCanvas.

Parameters:

parent - Required (non-null) parent Composite.

style - Optional SWT style bit-field. The SWT.NO_BACKGROUND bit is set before passing this up to the Canvas constructor, so OpenGL handles the background.

caps - Optional GLCapabilities. If not provided, the default capabilities for the default GLProfile for the graphics device determined by the parent Composite are used. Note that the GLCapabilities that are actually used may differ based on the capabilities of the graphics device.

chooser - Optional GLCapabilitiesChooser to customize the selection of the used GLCapabilities based on the requested GLCapabilities, and the available capabilities of the graphics device.

shareWith - Optional GLContext to share state (textures, vbos, shaders, etc.) with.

Method Detail

create

public static GLCanvas create(org.eclipse.swt.widgets.Composite parent,
              int style,
              GLCapabilitiesImmutable caps,
              GLCapabilitiesChooser chooser,
              GLContext shareWith)

Creates an instance using GLCanvas(Composite, int, GLCapabilitiesImmutable, GLCapabilitiesChooser, GLContext) on the SWT thread.

Parameters:

parent - Required (non-null) parent Composite.

style - Optional SWT style bit-field. The SWT.NO_BACKGROUND bit is set before passing this up to the Canvas constructor, so OpenGL handles the background.

caps - Optional GLCapabilities. If not provided, the default capabilities for the default GLProfile for the graphics device determined by the parent Composite are used. Note that the GLCapabilities that are actually used may differ based on the capabilities of the graphics device.

chooser - Optional GLCapabilitiesChooser to customize the selection of the used GLCapabilities based on the requested GLCapabilities, and the available capabilities of the graphics device.

shareWith - Optional GLContext to share state (textures, vbos, shaders, etc.) with.

Returns:

a new instance

display

public void display()

Description copied from interface: GLAutoDrawable

Causes OpenGL rendering to be performed for this GLAutoDrawable in the following order:

• Calling display(..) for all registered GLEventListeners.
• Executes all one-shot GLRunnable, enqueued via GLAutoDrawable.invoke(boolean, GLRunnable).

May be called periodically by a running GLAnimatorControl implementation,
which must register itself with GLAutoDrawable.setAnimator(javax.media.opengl.GLAnimatorControl).

Called automatically by the window system toolkit upon receiving a repaint() request,
except an GLAnimatorControl implementation GLAnimatorControl.isAnimating().

This routine may also be called manually for better control over the rendering process. It is legal to call another GLAutoDrawable's display method from within the display(..) callback.

In case of a new generated OpenGL context, the implementation shall call init(..) for all registered GLEventListeners before making the actual display(..) calls, in case this has not been done yet.

Specified by:

display in interface GLAutoDrawable

See Also:

GLAutoDrawable.setAnimator(javax.media.opengl.GLAnimatorControl)

getUpstreamWidget

public final Object getUpstreamWidget()

Description copied from interface: GLAutoDrawable

Method may return the upstream UI toolkit object holding this GLAutoDrawable instance, if exist.

Currently known Java UI toolkits and it's known return types are:

Toolkit	GLAutoDrawable Implementation	~	Return Type of getUpstreamWidget()
NEWT	GLWindow	has a	Window
SWT	GLCanvas	is a	Canvas
AWT	GLCanvas	is a	Canvas
AWT	GLJPanel	is a	JPanel

However, the result may be other object types than the listed above due to new supported toolkits.

This method may also return null if no UI toolkit is being used, as common for offscreen rendering.

Specified by:

getUpstreamWidget in interface GLAutoDrawable

Returns:

getWidth

public int getWidth()

Description copied from interface: GLDrawable

Returns the current width of this GLDrawable.

Specified by:

getWidth in interface GLDrawable

getHeight

public int getHeight()

Description copied from interface: GLDrawable

Returns the current height of this GLDrawable.

Specified by:

getHeight in interface GLDrawable

addGLEventListener

public void addGLEventListener(GLEventListener arg0)

Description copied from interface: GLAutoDrawable

Adds a GLEventListener to the end of this drawable queue. The listeners are notified of events in the order of the queue.

Specified by:

addGLEventListener in interface GLAutoDrawable

addGLEventListener

public void addGLEventListener(int arg0,
                      GLEventListener arg1)
                        throws IndexOutOfBoundsException

Description copied from interface: GLAutoDrawable

Adds a GLEventListener at the given index of this drawable queue. The listeners are notified of events in the order of the queue.

Specified by:

addGLEventListener in interface GLAutoDrawable

Parameters:

arg0 - Position where the listener will be inserted. Should be within (0 <= index && index <= size()). An index value of -1 is interpreted as the end of the list, size().

arg1 - The GLEventListener object to be inserted

Throws:

IndexOutOfBoundsException - If the index is not within (0 <= index && index <= size()), or -1

destroy

public void destroy()

Destroys all resources associated with this GLAutoDrawable, inclusive the GLContext. If a window is attached to it's implementation, it shall be closed. Causes disposing of all OpenGL resources by calling dispose(..) for all registered GLEventListeners. Called automatically by the window system toolkit upon receiving a destroy notification. This routine may be called manually.

This impl. calls this class's dispose() SWT override, where the actual implementation resides.

Specified by:

destroy in interface GLAutoDrawable

getAnimator

public GLAnimatorControl getAnimator()

Specified by:

getAnimator in interface GLAutoDrawable

Returns:

the registered GLAnimatorControl implementation, using this GLAutoDrawable.

See Also:

GLAutoDrawable.setAnimator(javax.media.opengl.GLAnimatorControl), GLAnimatorControl

getAutoSwapBufferMode

public boolean getAutoSwapBufferMode()

Description copied from interface: GLAutoDrawable

Indicates whether automatic buffer swapping is enabled for this drawable. See GLAutoDrawable.setAutoSwapBufferMode(boolean).

Specified by:

getAutoSwapBufferMode in interface GLAutoDrawable

getContext

public GLContext getContext()

Description copied from interface: GLAutoDrawable

Returns the context associated with this drawable. The returned context will be synchronized. Don't rely on it's identity, the context may change.

Specified by:

getContext in interface GLAutoDrawable

getContextCreationFlags

public int getContextCreationFlags()

Specified by:

getContextCreationFlags in interface GLAutoDrawable

Returns:

Additional context creation flags

getGL

public GL getGL()

Description copied from interface: GLAutoDrawable

Returns the GL pipeline object this GLAutoDrawable uses. If this method is called outside of the GLEventListener's callback methods (init, display, etc.) it may return null. Users should not rely on the identity of the returned GL object; for example, users should not maintain a hash table with the GL object as the key. Additionally, the GL object should not be cached in client code, but should be re-fetched from the GLAutoDrawable at the beginning of each call to init, display, etc.

Specified by:

getGL in interface GLAutoDrawable

invoke

public boolean invoke(boolean wait,
             GLRunnable run)

Description copied from interface: GLAutoDrawable

Enqueues a one-shot GLRunnable, which will be executed within the next GLAutoDrawable.display() call after all registered GLEventListeners display(GLAutoDrawable) methods has been called.

If no GLAnimatorControl is animating (default),
or if the current thread is the animator thread,
a GLAutoDrawable.display() call is issued after enqueue the GLRunnable.
No extra synchronization is performed in case wait is true, since it is executed in the current thread.

If an GLAnimatorControl is animating,
no GLAutoDrawable.display() call is issued, since the animator thread performs it.

If wait is true the call blocks until the glRunnable has been executed.

If wait is true and GLDrawable.isRealized() returns false or GLAutoDrawable.getContext() returns null, the call is ignored and returns false.
This helps avoiding deadlocking the caller.

The internal queue of GLRunnable's is being flushed with GLAutoDrawable.destroy() where all blocked callers are being notified.

Specified by:

invoke in interface GLAutoDrawable

Parameters:

wait - if true block until execution of glRunnable is finished, otherwise return immediatly w/o waiting

run - the GLRunnable to execute within GLAutoDrawable.display()

Returns:

true if the GLRunnable has been processed or queued, otherwise false.

See Also:

GLAutoDrawable.setAnimator(GLAnimatorControl), GLAutoDrawable.display(), GLRunnable

removeGLEventListener

public void removeGLEventListener(GLEventListener arg0)

Description copied from interface: GLAutoDrawable

Removes a GLEventListener from this drawable. Note that if this is done from within a particular drawable's GLEventListener handler (reshape, display, etc.) that it is not guaranteed that all other listeners will be evaluated properly during this update cycle.

Specified by:

removeGLEventListener in interface GLAutoDrawable

Parameters:

arg0 - The GLEventListener object to be removed

removeGLEventListener

public GLEventListener removeGLEventListener(int index)
                                      throws IndexOutOfBoundsException

Description copied from interface: GLAutoDrawable

Removes a GLEventListener at the given index from this drawable. Note that if this is done from within a particular drawable's GLEventListener handler (reshape, display, etc.) that it is not guaranteed that all other listeners will be evaluated properly during this update cycle.

Specified by:

removeGLEventListener in interface GLAutoDrawable

Parameters:

index - Position of the listener to be removed. Should be within (0 <= index && index < size()). An index value of -1 is interpreted as last listener, size()-1.

Returns:

The removed GLEventListener object

Throws:

IndexOutOfBoundsException - If the index is not within (0 <= index && index < size()), or -1

setAnimator

public void setAnimator(GLAnimatorControl arg0)
                 throws GLException

Description copied from interface: GLAutoDrawable

Registers the usage of an animator, an GLAnimatorControl implementation. The animator will be queried whether it's animating, ie periodically issuing GLAutoDrawable.display() calls or not.

This method shall be called by an animator implementation only,
e.g. AnimatorBase.add(javax.media.opengl.GLAutoDrawable), passing it's control implementation,
and AnimatorBase.remove(javax.media.opengl.GLAutoDrawable), passing null.

Impacts GLAutoDrawable.display() and GLAutoDrawable.invoke(boolean, GLRunnable) semantics.

Specified by:

setAnimator in interface GLAutoDrawable

Throws:

GLException - if an animator is already registered.

See Also:

GLAutoDrawable.display(), GLAutoDrawable.invoke(boolean, GLRunnable), GLAnimatorControl

setAutoSwapBufferMode

public void setAutoSwapBufferMode(boolean arg0)

Description copied from interface: GLAutoDrawable

Enables or disables automatic buffer swapping for this drawable. By default this property is set to true; when true, after all GLEventListeners have been called for a display() event, the front and back buffers are swapped, displaying the results of the render. When disabled, the user is responsible for calling GLDrawable.swapBuffers(..) manually.

Specified by:

setAutoSwapBufferMode in interface GLAutoDrawable

setContext

public GLContext setContext(GLContext newCtx)

Description copied from interface: GLAutoDrawable

Associate a new context to this drawable and also propagates the context/drawable switch by calling newCtx.setGLDrawable(drawable, true);. drawable might be an inner GLDrawable instance if using such a delegation pattern, or this GLAutoDrawable itself.

If the old context's drawable was an GLAutoDrawable, it's reference to the given drawable is being cleared by calling ((GLAutoDrawable)oldCtx.getGLDrawable()).setContext(null).

If the old or new context was current on this thread, it is being released before switching the drawable. The new context will be made current afterwards, if it was current before. However the user shall take extra care that not other thread attempts to make this context current. Otherwise a race condition may happen.

Disclaimer: Even though the API may allows this functionality in theory, your mileage may vary switching the drawable of an already established GLContext, i.e. which is already made current once. FIXME: Validate functionality!

Specified by:

setContext in interface GLAutoDrawable

Parameters:

newCtx - the new context

Returns:

the replaced GLContext, maybe null

See Also:

GLContext.setGLDrawable(GLDrawable, boolean), GLContext.setGLReadDrawable(GLDrawable), GLDrawableHelper.switchContext(GLDrawable, GLContext, GLContext, int)

setContextCreationFlags

public void setContextCreationFlags(int arg0)

Specified by:

setContextCreationFlags in interface GLAutoDrawable

Parameters:

arg0 - Additional context creation flags.

See Also:

GLContext.setContextCreationFlags(int), GLContext.enableGLDebugMessage(boolean)

setGL

public GL setGL(GL arg0)

Description copied from interface: GLAutoDrawable

Sets the GL pipeline object this GLAutoDrawable uses. This should only be called from within the GLEventListener's callback methods, and usually only from within the init() method, in order to install a composable pipeline. See the JOGL demos for examples.

Specified by:

setGL in interface GLAutoDrawable

Returns:

the set GL pipeline or null if not successful

createContext

public GLContext createContext(GLContext shareWith)

Description copied from interface: GLAutoDrawable

Creates a new context for drawing to this drawable that will optionally share display lists and other server-side OpenGL objects with the specified GLContext.

The GLContext share need not be associated with this GLDrawable and may be null if sharing of display lists and other objects is not desired. See the note in the overview documentation on context sharing.

This GLAutoDrawable implementation holds it's own GLContext reference, thus created a GLContext using this methods won't replace it implicitly. To replace or set this GLAutoDrawable's GLContext you need to call GLAutoDrawable.setContext(GLContext).

The GLAutoDrawable implementation shall also set the context creation flags as customized w/ GLAutoDrawable.setContextCreationFlags(int).

Specified by:

createContext in interface GLAutoDrawable

Specified by:

createContext in interface GLDrawable

getChosenGLCapabilities

public GLCapabilitiesImmutable getChosenGLCapabilities()

Description copied from interface: GLDrawable

Fetches the GLCapabilitiesImmutable corresponding to the chosen OpenGL capabilities (pixel format / visual / GLProfile) for this drawable.
On some platforms, the pixel format is not directly associated with the drawable; a best attempt is made to return a reasonable value in this case.
This object shall be directly associated to the attached NativeSurface's AbstractGraphicsConfiguration, and if changes are necessary, they should reflect those as well.

Specified by:

getChosenGLCapabilities in interface GLDrawable

Returns:

A copy of the queried object.

getRequestedGLCapabilities

public GLCapabilitiesImmutable getRequestedGLCapabilities()

Accessor for the GLCapabilities that were requested (via the constructor parameter).

Returns:

Non-null GLCapabilities.

getFactory

public GLDrawableFactory getFactory()

Description copied from interface: GLDrawable

Return the GLDrawableFactory being used to create this instance.

Specified by:

getFactory in interface GLDrawable

getGLProfile

public GLProfile getGLProfile()

Description copied from interface: GLDrawable

Fetches the GLProfile for this drawable. Returns the GLProfile object, no copy.

Specified by:

getGLProfile in interface GLDrawable

getHandle

public long getHandle()

Description copied from interface: GLDrawable

This is the GL/Windowing drawable handle.
It is usually the NativeSurface.getSurfaceHandle(), ie the native surface handle of the underlying windowing toolkit.
However, on X11/GLX this reflects a GLXDrawable, which represents a GLXWindow, GLXPixmap, or GLXPbuffer.
On EGL, this represents the EGLSurface.

Specified by:

getHandle in interface GLDrawable

getNativeSurface

public NativeSurface getNativeSurface()

Description copied from interface: GLDrawable

Returns the underlying native surface which surface handle represents this OpenGL drawable's native resource.

Specified by:

getNativeSurface in interface GLDrawable

See Also:

GLDrawable.getHandle()

isRealized

public boolean isRealized()

Specified by:

isRealized in interface GLDrawable

Returns:

true if this drawable is realized, otherwise false

setRealized

public void setRealized(boolean arg0)

Description copied from interface: GLDrawable

Indicates to on-screen GLDrawable implementations whether the underlying window has been created and can be drawn into. End users do not need to call this method; it is not necessary to call setRealized on a GLCanvas, a GLJPanel, or a GLPbuffer, as these perform the appropriate calls on their underlying GLDrawables internally.

Developers implementing new OpenGL components for various window toolkits need to call this method against GLDrawables obtained from the GLDrawableFactory via the GLDrawableFactory.getGLDrawable() method. It must typically be called with an argument of true when the component associated with the GLDrawable is realized and with an argument of false just before the component is unrealized. For the AWT, this means calling setRealized(true) in the addNotify method and with an argument of false in the removeNotify method.

GLDrawable implementations should handle multiple cycles of setRealized(true) / setRealized(false) calls. Most, if not all, Java window toolkits have a persistent object associated with a given component, regardless of whether that component is currently realized. The GLDrawable object associated with a particular component is intended to be similarly persistent. A GLDrawable is intended to be created for a given component when it is constructed and live as long as that component. setRealized allows the GLDrawable to re-initialize and destroy any associated resources as the component becomes realized and unrealized, respectively.

With an argument of true, the minimum implementation shall call NativeSurface's lockSurface() and if successfull:

• Update the GLCapabilities, which are associated with the attached NativeSurface's AbstractGraphicsConfiguration.
• Release the lock with NativeSurface's unlockSurface().

This is important since NativeSurface's lockSurface() ensures resolving the window/surface handles, and the drawable's GLCapabilities might have changed.

Calling this method has no other effects. For example, if removeNotify is called on a Canvas implementation for which a GLDrawable has been created, it is also necessary to destroy all OpenGL contexts associated with that GLDrawable. This is not done automatically by the implementation.

Specified by:

setRealized in interface GLDrawable

swapBuffers

public void swapBuffers()
                 throws GLException

Description copied from interface: GLDrawable

Swaps the front and back buffers of this drawable. For GLAutoDrawable implementations, when automatic buffer swapping is enabled (as is the default), this method is called automatically and should not be called by the end user.

Specified by:

swapBuffers in interface GLDrawable

Throws:

GLException

update

public void update()

Overrides:

update in class org.eclipse.swt.widgets.Control

dispose

public void dispose()

Overrides:

dispose in class org.eclipse.swt.widgets.Widget

main

public static void main(String[] args)