public class GLCanvas extends org.eclipse.swt.widgets.Canvas implements GLAutoDrawable, GLSharedContextSetter
Implementation allows use of custom GLCapabilities.
OpenGL Context Sharing
To share a GLContext see the following note in the documentation overview:
context sharing
as well as GLSharedContextSetter.
SCREEN_CHANGE_ACTION_ENABLED| Constructor and Description |
|---|
GLCanvas(org.eclipse.swt.widgets.Composite parent,
int style,
GLCapabilitiesImmutable capsReqUser,
GLCapabilitiesChooser capsChooser)
Creates a new SWT GLCanvas.
|
| Modifier and Type | Method and Description |
|---|---|
void |
addGLEventListener(GLEventListener listener)
Adds the given
listener to the end of this drawable queue. |
void |
addGLEventListener(int idx,
GLEventListener listener)
Adds the given
listener at the given index of this drawable queue. |
boolean |
areAllGLEventListenerInitialized()
Returns true if all added
GLEventListener are initialized, otherwise false. |
static GLCanvas |
create(org.eclipse.swt.widgets.Composite parent,
int style,
GLCapabilitiesImmutable caps,
GLCapabilitiesChooser chooser)
Creates an instance using
GLCanvas(Composite, int, GLCapabilitiesImmutable, GLCapabilitiesChooser)
on the SWT thread. |
GLContext |
createContext(GLContext shareWith)
Creates a new context for drawing to this drawable that will
optionally share buffer objects, textures 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() |
GLEventListener |
disposeGLEventListener(GLEventListener listener,
boolean remove)
Disposes the given
listener via dispose(..)
if it has been initialized and added to this queue. |
void |
flushGLRunnables()
|
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. |
GLContext |
getContext()
Returns the context associated with this drawable.
|
int |
getContextCreationFlags() |
GLDrawable |
getDelegatedDrawable()
If the implementation uses delegation, return the delegated
GLDrawable instance,
otherwise return this instance. |
Thread |
getExclusiveContextThread() |
GLDrawableFactory |
getFactory()
Return the
GLDrawableFactory being used to create this instance. |
GL |
getGL()
Returns the
GL pipeline object this GLAutoDrawable uses. |
GLEventListener |
getGLEventListener(int index)
Returns the
GLEventListener at the given index of this drawable queue. |
int |
getGLEventListenerCount()
Returns the number of
GLEventListener of this drawable queue. |
boolean |
getGLEventListenerInitState(GLEventListener listener)
Retrieves whether the given
listener is initialized or not. |
GLProfile |
getGLProfile()
Fetches the
GLProfile for this drawable. |
long |
getHandle()
Returns the GL drawable handle,
guaranteed to be valid after
realization
and while it's surface is being locked. |
NativeSurface |
getNativeSurface()
Returns the associated
NativeSurface of this NativeSurfaceHolder. |
GLCapabilitiesImmutable |
getRequestedGLCapabilities()
Fetches the
GLCapabilitiesImmutable corresponding to the user requested
OpenGL capabilities (pixel format / visual / GLProfile) for this drawable. |
int |
getSurfaceHeight()
Returns the height of this
GLDrawable's surface client area in pixel units. |
int |
getSurfaceWidth()
Returns the width of this
GLDrawable's surface client area in pixel units. |
RecursiveLock |
getUpstreamLock()
Returns the recursive lock object of the
upstream widget
to synchronize multithreaded access on top of NativeSurface.lockSurface(). |
Object |
getUpstreamWidget()
Method may return the upstream UI toolkit object
holding this
GLAutoDrawable instance, if exist. |
boolean |
invoke(boolean wait,
GLRunnable runnable)
Enqueues a one-shot
GLRunnable,
which will be executed within the next GLAutoDrawable.display() call
after all registered GLEventListeners
display(GLAutoDrawable)
methods have been called. |
boolean |
invoke(boolean wait,
List<GLRunnable> runnables)
Extends
GLAutoDrawable.invoke(boolean, GLRunnable) functionality
allowing to inject a list of GLRunnables. |
boolean |
isGLOriented()
Returns
true if the drawable is rendered in
OpenGL's coordinate system, origin at bottom left. |
boolean |
isRealized()
Returns
true if this drawable is realized, otherwise true. |
boolean |
isThreadGLCapable()
Indicates whether the current thread is capable of
performing OpenGL-related work.
|
static void |
main(String[] args) |
GLEventListener |
removeGLEventListener(GLEventListener listener)
Removes the given
listener from this drawable queue. |
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,
boolean destroyPrevCtx)
Associate the new context,
newtCtx, to this auto-drawable. |
void |
setContextCreationFlags(int arg0) |
Thread |
setExclusiveContextThread(Thread t)
Dedicates this instance's
GLContext to the given thread.The thread will exclusively claim the GLContext via GLAutoDrawable.display() and not release it
until GLAutoDrawable.destroy() or setExclusiveContextThread(null) has been called. |
GL |
setGL(GL arg0)
Sets the
GL pipeline object this GLAutoDrawable uses. |
void |
setGLEventListenerInitState(GLEventListener listener,
boolean initialized)
Sets the given
listener's initialized state. |
void |
setRealized(boolean arg0)
Indicates to GLDrawable implementations whether the
underlying
surface has been created and can be drawn into. |
void |
setSharedAutoDrawable(GLAutoDrawable sharedAutoDrawable)
Specifies an
GLAutoDrawable, which OpenGL context shall be shared by this GLAutoDrawable's GLContext. |
void |
setSharedContext(GLContext sharedContext)
|
void |
swapBuffers()
Swaps the front and back buffers of this drawable.
|
String |
toString() |
void |
update() |
drawBackground, getCaret, getIME, scroll, setCaret, setFont, setIMEchanged, computeSize, drawBackground, getBackgroundMode, getChildren, getClientArea, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabListcomputeTrim, getBorderWidth, getHorizontalBar, getScrollbarsMode, getVerticalBaraddControlListener, 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, traversepublic GLCanvas(org.eclipse.swt.widgets.Composite parent,
int style,
GLCapabilitiesImmutable capsReqUser,
GLCapabilitiesChooser capsChooser)
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.capsReqUser - 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.capsChooser - Optional GLCapabilitiesChooser to customize the selection of the used GLCapabilities based on the
requested GLCapabilities, and the available capabilities of the graphics device.public static GLCanvas create(org.eclipse.swt.widgets.Composite parent, int style, GLCapabilitiesImmutable caps, GLCapabilitiesChooser chooser)
GLCanvas(Composite, int, GLCapabilitiesImmutable, GLCapabilitiesChooser)
on the SWT thread.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.public final void setSharedContext(GLContext sharedContext) throws IllegalStateException
GLSharedContextSetterOpenGL context, which shall be shared by this GLAutoDrawable's GLContext.
Since the drawable and context is created
at GLAutoDrawable initialization
this method shall be called beforehand to have any effect.
A set sharedContext will block context creation, i.e. GLAutoDrawable initialization,
as long it is not created natively.
The preferred method of assigning a shared context is
to set the shared GLAutoDrawable,
since this method also takes the GLEventListener
initialization into account.
setSharedContext in interface GLSharedContextSettersharedContext - The OpenGL context to be shared by this GLAutoDrawable's GLContext.IllegalStateException - if a shared GLContext
or shared GLAutoDrawable is already set,
the given sharedContext is null or equal to this GLAutoDrawable's context.GLSharedContextSetter.setSharedAutoDrawable(GLAutoDrawable)public final void setSharedAutoDrawable(GLAutoDrawable sharedAutoDrawable) throws IllegalStateException
GLSharedContextSetterGLAutoDrawable, which OpenGL context shall be shared by this GLAutoDrawable's GLContext.
Since the drawable and context is created
at GLAutoDrawable initialization
this method shall be called beforehand to have any effect.
A set sharedAutoDrawable will block context creation, i.e. initialization as long it's
GLContext is null, orGLContext has not been created natively, orGLEventListener are not completely initializedsetSharedAutoDrawable in interface GLSharedContextSetterIllegalStateException - if a shared GLContext
or shared GLAutoDrawable is already set,
the given sharedAutoDrawable is null or equal to this GLAutoDrawable.GLSharedContextSetter.setSharedContext(GLContext)public void update()
update in class org.eclipse.swt.widgets.Controlpublic void dispose()
dispose in class org.eclipse.swt.widgets.Widgetpublic void display()
GLAutoDrawableCauses OpenGL rendering to be performed for this GLAutoDrawable in the following order:
display(..) for all
registered GLEventListeners. 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.
display in interface GLAutoDrawableGLAutoDrawable.setAnimator(javax.media.opengl.GLAnimatorControl)public final Object getUpstreamWidget()
GLAutoDrawableGLAutoDrawable 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 |
This method may also return null if no UI toolkit is being used,
as common for offscreen rendering.
getUpstreamWidget in interface GLAutoDrawablepublic final RecursiveLock getUpstreamLock()
GLAutoDrawableupstream widget
to synchronize multithreaded access on top of NativeSurface.lockSurface().
getUpstreamLock in interface GLAutoDrawablepublic int getSurfaceWidth()
GLDrawableGLDrawable's surface client area in pixel units.getSurfaceWidth in interface GLDrawableNativeSurface.getSurfaceWidth()public int getSurfaceHeight()
GLDrawableGLDrawable's surface client area in pixel units.getSurfaceHeight in interface GLDrawableNativeSurface.getSurfaceHeight()public boolean isGLOriented()
GLDrawabletrue if the drawable is rendered in
OpenGL's coordinate system, origin at bottom left.
Otherwise returns false, i.e. origin at top left.
Default impl. is true, i.e. OpenGL coordinate system.
Currently only MS-Windows bitmap offscreen drawable uses a non OpenGL orientation and hence returns false.
This removes the need of a vertical flip when used in AWT or Windows applications.
isGLOriented in interface GLDrawablepublic void addGLEventListener(GLEventListener listener)
GLAutoDrawablelistener to the end of this drawable queue.
The listeners are notified of events in the order of the queue.
The newly added listener's init(..)
method will be called once before any other of it's callback methods.
See GLAutoDrawable.getGLEventListenerInitState(GLEventListener) for details.
addGLEventListener in interface GLAutoDrawablelistener - The GLEventListener object to be insertedpublic void addGLEventListener(int idx,
GLEventListener listener)
throws IndexOutOfBoundsException
GLAutoDrawablelistener at the given index of this drawable queue.
The listeners are notified of events in the order of the queue.
The newly added listener's init(..)
method will be called once before any other of it's callback methods.
See GLAutoDrawable.getGLEventListenerInitState(GLEventListener) for details.
addGLEventListener in interface GLAutoDrawableidx - 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().listener - The GLEventListener object to be insertedIndexOutOfBoundsException - If the index is not within (0 <= index && index <= size()), or -1public int getGLEventListenerCount()
GLAutoDrawableGLEventListener of this drawable queue.getGLEventListenerCount in interface GLAutoDrawablepublic GLEventListener getGLEventListener(int index) throws IndexOutOfBoundsException
GLAutoDrawableGLEventListener at the given index of this drawable queue.getGLEventListener in interface GLAutoDrawableindex - Position of the listener to be returned.
Should be within (0 <= index && index < size()).
An index value of -1 is interpreted as last listener, size()-1.IndexOutOfBoundsException - If the index is not within (0 <= index && index < size()), or -1public boolean areAllGLEventListenerInitialized()
GLAutoDrawableGLEventListener are initialized, otherwise false.areAllGLEventListenerInitialized in interface GLAutoDrawablepublic boolean getGLEventListenerInitState(GLEventListener listener)
GLAutoDrawablelistener is initialized or not.
After adding a GLEventListener it is
marked uninitialized and added to a list of to be initialized GLEventListener.
If such uninitialized GLEventListener's handler methods (reshape, display)
are about to be invoked, it's init(..) method is invoked first.
Afterwards the GLEventListener is marked initialized
and removed from the list of to be initialized GLEventListener.
This methods returns the GLEventListener initialized state,
i.e. returns false if it is included in the list of to be initialized GLEventListener,
otherwise true.
getGLEventListenerInitState in interface GLAutoDrawablelistener - the GLEventListener object to query it's initialized state.public void setGLEventListenerInitState(GLEventListener listener, boolean initialized)
GLAutoDrawablelistener's initialized state.
This methods allows manually setting the GLEventListener initialized state,
i.e. adding it to, or removing it from the list of to be initialized GLEventListener.
See GLAutoDrawable.getGLEventListenerInitState(GLEventListener) for details.
Warning: This method does not validate whether the given listener's
is member of this drawable queue, i.e. added.
This method is only exposed to allow users full control over the GLEventListener's state
and is usually not recommended to change.
One use case is moving a GLContext and their initialized GLEventListener
from one GLAutoDrawable to another,
where a subsequent init(..) call after adding it
to the new owner is neither required nor desired.
See swapGLContextAndAllGLEventListener(..).
setGLEventListenerInitState in interface GLAutoDrawablelistener - the GLEventListener object to perform a state change.initialized - if true, mark the listener initialized, otherwise uninitialized.public GLEventListener disposeGLEventListener(GLEventListener listener, boolean remove)
GLAutoDrawablelistener via dispose(..)
if it has been initialized and added to this queue.
If remove is true, the GLEventListener is removed from this drawable queue before disposal,
otherwise marked uninitialized.
If an GLAnimatorControl is being attached and the current thread is different
than the animator's thread, it is paused during the operation.
Note that this is an expensive operation, since dispose(..)
is decorated by GLContext.makeCurrent() and GLContext.release().
Use removeGLEventListener(listener) instead
if you just want to remove the listener and don't care about the disposal of the it's (OpenGL) resources.
Also note that 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.
disposeGLEventListener in interface GLAutoDrawablelistener - The GLEventListener object to be disposed and removed if remove is trueremove - pass true to have the listener removed from this drawable queue, otherwise pass falsepublic GLEventListener removeGLEventListener(GLEventListener listener)
GLAutoDrawablelistener from this drawable queue.
This is an inexpensive operation, since the removed listener's
dispose(..) method will not be called.
Use disposeGLEventListener(listener, true)
instead to ensure disposal of the listener's (OpenGL) resources.
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.
removeGLEventListener in interface GLAutoDrawablelistener - The GLEventListener object to be removedpublic void destroy()
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.
destroy in interface GLAutoDrawablepublic GLAnimatorControl getAnimator()
getAnimator in interface GLAutoDrawableGLAnimatorControl implementation, using this GLAutoDrawable.GLAutoDrawable.setAnimator(javax.media.opengl.GLAnimatorControl),
GLAnimatorControlpublic final Thread setExclusiveContextThread(Thread t) throws GLException
GLAutoDrawableGLContext to the given thread.GLContext via GLAutoDrawable.display() and not release it
until GLAutoDrawable.destroy() or setExclusiveContextThread(null) has been called.
Default non-exclusive behavior is requested via setExclusiveContextThread(null),
which will cause the next call of GLAutoDrawable.display() on the exclusive thread to
release the GLContext. Only after it's async release, GLAutoDrawable.getExclusiveContextThread()
will return null.
To release a previous made exclusive thread, a user issues setExclusiveContextThread(null)
and may poll GLAutoDrawable.getExclusiveContextThread() until it returns null,
while the exclusive thread is still running.
Note: Setting a new exclusive thread without properly releasing a previous one will throw an GLException.
Note: Utilizing this feature w/ AWT could lead to an AWT-EDT deadlock, depending on the AWT implementation. Hence it is advised not to use it with native AWT GLAutoDrawable like GLCanvas.
One scenario could be to dedicate the context to the animator thread
and spare redundant context switches, see AnimatorBase.setExclusiveContext(boolean).
setExclusiveContextThread in interface GLAutoDrawablet - the exclusive thread to claim the context, or null for default operation.GLException - If an exclusive thread is still active but a new one is attempted to be setAnimatorBase.setExclusiveContext(boolean)public final Thread getExclusiveContextThread()
getExclusiveContextThread in interface GLAutoDrawableGLAutoDrawable.setExclusiveContextThread(Thread)public boolean getAutoSwapBufferMode()
GLAutoDrawableGLAutoDrawable.setAutoSwapBufferMode(boolean).getAutoSwapBufferMode in interface GLAutoDrawablepublic final GLDrawable getDelegatedDrawable()
GLAutoDrawableGLDrawable instance,
otherwise return this instance.getDelegatedDrawable in interface GLAutoDrawablepublic GLContext getContext()
GLAutoDrawablegetContext in interface GLAutoDrawablepublic int getContextCreationFlags()
getContextCreationFlags in interface GLAutoDrawablepublic GL getGL()
GLAutoDrawableGL 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.getGL in interface GLAutoDrawablepublic boolean invoke(boolean wait,
GLRunnable runnable)
throws IllegalStateException
GLAutoDrawableGLRunnable,
which will be executed within the next GLAutoDrawable.display() call
after all registered GLEventListeners
display(GLAutoDrawable)
methods have 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,
hence the GLRunnable will be executed right away.
If an animator is running,
no explicit GLAutoDrawable.display() call is issued, allowing the animator to perform at due time.
If wait is true the call blocks until the glRunnable
has been executed by the animator, otherwise the method returns immediately.
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.
To avoid a deadlock situation which causes an IllegalStateException one should
avoid issuing invoke while this GLAutoDrawable is being locked.
Detected deadlock situations throwing an IllegalStateException are:
invoke in interface GLAutoDrawablewait - if true block until execution of glRunnable is finished, otherwise return immediately w/o waitingrunnable - the GLRunnable to execute within GLAutoDrawable.display()true if the GLRunnable has been processed or queued, otherwise false.IllegalStateException - in case of a detected deadlock situation ahead, see above.GLAutoDrawable.setAnimator(GLAnimatorControl),
GLAutoDrawable.display(),
GLRunnable,
GLAutoDrawable.invoke(boolean, List),
GLAutoDrawable.flushGLRunnables()public boolean invoke(boolean wait,
List<GLRunnable> runnables)
throws IllegalStateException
GLAutoDrawableGLAutoDrawable.invoke(boolean, GLRunnable) functionality
allowing to inject a list of GLRunnables.invoke in interface GLAutoDrawablewait - if true block until execution of the last glRunnable is finished, otherwise return immediately w/o waitingrunnables - the GLRunnables to execute within GLAutoDrawable.display()true if the GLRunnables has been processed or queued, otherwise false.IllegalStateException - in case of a detected deadlock situation ahead, see GLAutoDrawable.invoke(boolean, GLRunnable).GLAutoDrawable.invoke(boolean, GLRunnable),
GLAutoDrawable.flushGLRunnables()public void flushGLRunnables()
GLAutoDrawableenqueued GLRunnable of this GLAutoDrawable
including notifying waiting executor.
The executor which might have been blocked until notified will be unblocked and all tasks removed from the queue.
flushGLRunnables in interface GLAutoDrawableGLAutoDrawable.invoke(boolean, GLRunnable)public void setAnimator(GLAnimatorControl arg0) throws GLException
GLAutoDrawableGLAnimatorControl 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.
setAnimator in interface GLAutoDrawablearg0 - null reference indicates no animator is using
this GLAutoDrawable,GLAutoDrawable.GLException - if an animator is already registered.GLAutoDrawable.display(),
GLAutoDrawable.invoke(boolean, GLRunnable),
GLAnimatorControlpublic void setAutoSwapBufferMode(boolean arg0)
GLAutoDrawableGLDrawable.swapBuffers(..) manually.setAutoSwapBufferMode in interface GLAutoDrawablepublic GLContext setContext(GLContext newCtx, boolean destroyPrevCtx)
GLAutoDrawablenewtCtx, to this auto-drawable.
Remarks:
destroyPrevCtx is true,
otherwise it will be disassociated from this auto-drawable
via setGLDrawable(null, true); including glFinish().newCtx.setGLDrawable(drawable, true);.#makeCurrent() and #release() while drawable reassociation.auto-drawable's
upstream-locks and surfaces
to avoid a race condition. See GLAutoDrawable Locking.setContext in interface GLAutoDrawablenewCtx - the new context, maybe null for dis-association.destroyPrevCtx - if true, destroy the previous context if existsnullGLContext.setGLDrawable(GLDrawable, boolean),
GLContext.setGLReadDrawable(GLDrawable),
GLDrawableHelper.switchContext(GLDrawable, GLContext, boolean, GLContext, int)public void setContextCreationFlags(int arg0)
setContextCreationFlags in interface GLAutoDrawablearg0 - Additional context creation flags.GLContext.setContextCreationFlags(int),
GLContext.enableGLDebugMessage(boolean)public GL setGL(GL arg0)
GLAutoDrawableGL 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.setGL in interface GLAutoDrawablepublic GLContext createContext(GLContext shareWith)
GLAutoDrawable
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
context sharing
as well as GLSharedContextSetter.
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, boolean).
The GLAutoDrawable implementation shall also set the
context creation flags as customized w/ GLAutoDrawable.setContextCreationFlags(int).
createContext in interface GLAutoDrawablecreateContext in interface GLDrawablepublic GLCapabilitiesImmutable getChosenGLCapabilities()
GLDrawableGLCapabilitiesImmutable corresponding to the chosen
OpenGL capabilities (pixel format / visual / GLProfile) for this drawable.
This query only returns the chosen capabilities if GLDrawable.isRealized().
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.
getChosenGLCapabilities in interface GLDrawableGLDrawable.getRequestedGLCapabilities()public GLCapabilitiesImmutable getRequestedGLCapabilities()
GLDrawableGLCapabilitiesImmutable corresponding to the user requested
OpenGL capabilities (pixel format / visual / GLProfile) for this drawable.
If realized, the chosen capabilities
reflect the actual selected OpenGL capabilities.
getRequestedGLCapabilities in interface GLDrawableGLDrawable.getChosenGLCapabilities()public GLDrawableFactory getFactory()
GLDrawableGLDrawableFactory being used to create this instance.getFactory in interface GLDrawablepublic GLProfile getGLProfile()
GLDrawableGLProfile for this drawable.
Returns the GLProfile object, no copy.getGLProfile in interface GLDrawablepublic long getHandle()
GLDrawablerealization
and while it's surface is being locked.
It is usually identical to the underlying windowing toolkit surface's
handle
or an intermediate layer to suite GL, e.g. an EGL surface.
On EGL it is represented by the EGLSurface.
On X11/GLX it is represented by either the Window XID, GLXPixmap, or GLXPbuffer.
On Windows it is represented by the HDC, which may change with each NativeSurface.lockSurface().
getHandle in interface GLDrawableGLDrawable.setRealized(boolean),
NativeSurface.lockSurface(),
NativeSurface.unlockSurface()public NativeSurface getNativeSurface()
GLDrawableNativeSurface of this NativeSurfaceHolder.
Returns the underlying NativeSurface which native handle
represents this OpenGL drawable's native resource.
getNativeSurface in interface NativeSurfaceHoldergetNativeSurface in interface GLDrawableGLDrawable.getHandle()public boolean isRealized()
GLDrawabletrue if this drawable is realized, otherwise true.
A drawable can be realized and unrealized via GLDrawable.setRealized(boolean).
isRealized in interface GLDrawableGLDrawable.setRealized(boolean)public void setRealized(boolean arg0)
GLDrawablesurface has been created and can be drawn into.
If realized, the drawable handle may become
valid while it's surface is being locked.
End users do not need to call this method; it is not necessary to
call setRealized on a GLAutoDrawable
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.createGLDrawable(NativeSurface) 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 successful:
GLCapabilities, which are associated with
the attached NativeSurface's AbstractGraphicsConfiguration.NativeSurface's unlockSurface().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.
setRealized in interface GLDrawableGLDrawable.isRealized(),
GLDrawable.getHandle(),
NativeSurface.lockSurface()public void swapBuffers()
throws GLException
GLDrawableGLAutoDrawable 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.swapBuffers in interface GLDrawableGLExceptionpublic final boolean isThreadGLCapable()
Implementation utilizes this knowledge to determine
whether GLAutoDrawable.display() performs the OpenGL commands on the current thread directly
or spawns them on the dedicated OpenGL thread.
Implementation always supports multithreading, hence method always returns true.
isThreadGLCapable in interface GLAutoDrawablepublic String toString()
toString in interface GLDrawabletoString in class org.eclipse.swt.widgets.Widgetpublic static void main(String[] args)
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