A Window represents an on-screen or off-screen drawable. More...

#include <window.h>

Inheritance diagram for eq::Window:

Collaboration diagram for eq::Window:

Public Types
typedef eq::ObjectManager	ObjectManager
	The per-window OpenGL object manager. More...

typedef BitmapFont	Font
	Fonts used for overlays. More...

Public Types inherited from eq::fabric::Window< Pipe, Window, Channel >
typedef std::vector< C * >	Channels
	A vector of pointers to channels. More...

typedef ElementVisitor< W, LeafVisitor< C > >	Visitor
	The Window visitor type. More...

enum	IAttribute
	Window attributes. More...

Public Types inherited from eq::fabric::Object
enum	DirtyBits { DIRTY_NAME = Serializable::DIRTY_CUSTOM << 0, DIRTY_USERDATA = Serializable::DIRTY_CUSTOM << 1, DIRTY_ERROR = Serializable::DIRTY_CUSTOM << 2, DIRTY_TASKS = Serializable::DIRTY_CUSTOM << 3, DIRTY_REMOVED = Serializable::DIRTY_CUSTOM << 4, DIRTY_SERIAL = Serializable::DIRTY_CUSTOM << 5, DIRTY_CUSTOM = Serializable::DIRTY_CUSTOM << 6, DIRTY_OBJECT_BITS = DIRTY_NAME \| DIRTY_USERDATA \| DIRTY_ERROR }
	The changed parts of the object since the last pack(). More...

Public Member Functions
	Window (Pipe *parent)
	Construct a new window. More...

virtual	~Window ()
	Destruct the window. More...

Data Access
co::CommandQueue *	getPipeThreadQueue ()

co::CommandQueue *	getCommandThreadQueue ()

uint32_t	getCurrentFrame () const

const Node *	getNode () const

Node *	getNode ()

const Config *	getConfig () const

Config *	getConfig ()

ClientPtr	getClient ()

ServerPtr	getServer ()

bool	isRunning () const

bool	isStopped () const

bool	getRenderContext (const int32_t x, const int32_t y, RenderContext &context) const
	Get the last rendering context at the x, y position. More...

OpenGL context handling and sharing
void	setSharedContextWindow (Window *sharedContextWindow)
	Set the window with which this window shares the OpenGL context. More...

const Window *	getSharedContextWindow () const

Window *	getSharedContextWindow ()

ObjectManager *	getObjectManager ()

const ObjectManager *	getObjectManager () const

const Font *	getSmallFont ()

const Font *	getMediumFont ()

const GLEWContext *	glewGetContext () const
	Get the GLEW context for this window. More...

const GLEWContext *	getTransferGlewContext ()

uint32_t	getColorFormat () const

SystemWindow interface
void	setSystemWindow (SystemWindow *window)
	Set the OS-specific window. More...

const SystemWindow *	getSystemWindow () const

SystemWindow *	getSystemWindow ()

const SystemPipe *	getSystemPipe () const

SystemPipe *	getSystemPipe ()

bool	createTransferWindow ()

void	deleteTransferSystemWindow ()

Public Member Functions inherited from eq::fabric::Window< Pipe, Window, Channel >
EQFABRIC_INL WindowPath	getPath () const

void	init ()

const P *	getPipe () const

P *	getPipe ()

const Channels &	getChannels () const

const DrawableConfig &	getDrawableConfig () const

const PixelViewport &	getPixelViewport () const

const Viewport &	getViewport () const

virtual EQFABRIC_INL void	setPixelViewport (const PixelViewport &pvp)
	Set the window's pixel viewport wrt its parent pipe. More...

EQFABRIC_INL void	setViewport (const Viewport &vp)
	Set the window's viewport wrt its parent pipe. More...

bool	hasFixedViewport () const

EQFABRIC_INL VisitorResult	accept (Visitor &visitor)
	Perform a depth-first traversal of this window. More...

EQFABRIC_INL VisitorResult	accept (Visitor &visitor) const
	Const-version of accept(). More...

virtual EQFABRIC_INL void	backup ()

virtual EQFABRIC_INL void	restore ()

void	create (C **channel)

void	release (C *channel)

virtual void	output (std::ostream &) const

virtual EQFABRIC_INL uint128_t	commit (const uint32_t incarnation=CO_COMMIT_NEXT)

void	setIAttribute (const IAttribute attr, const int32_t value)
	Set a window attribute. More...

int32_t	getIAttribute (const IAttribute attr) const

Public Member Functions inherited from eq::fabric::Object
virtual bool	isDirty () const

void	setName (const std::string &name)
	Set the name of the object. More...

const std::string &	getName () const

void	setUserData (co::Object *userData)
	Set user-specific data. More...

co::Object *	getUserData ()

const co::Object *	getUserData () const

void	setError (const int32_t error)
	Set an error code why the last operation failed. More...

eq::fabric::Error	getError () const

uint32_t	getTasks () const
	Return the set of tasks this channel might execute in the worst case. More...

uint32_t	getSerial () const

Protected Member Functions
virtual void	attach (const UUID &id, const uint32_t instanceID)

Protected Member Functions inherited from eq::fabric::Window< Pipe, Window, Channel >
	Window (P *parent)

virtual EQFABRIC_INL void	serialize (co::DataOStream &os, const uint64_t dirtyBits)

virtual EQFABRIC_INL void	deserialize (co::DataIStream &is, const uint64_t dirtyBits)

virtual EQFABRIC_INL void	notifyDetach ()

virtual EQFABRIC_INL void	setDirty (const uint64_t bits)

void	_setDrawableConfig (const DrawableConfig &drawableConfig)

virtual ChangeType	getChangeType () const

C *	_findChannel (const UUID &id)

virtual uint64_t	getRedistributableBits () const

Protected Member Functions inherited from eq::fabric::Object
	Object ()
	Construct a new Object. More...

virtual	~Object ()
	Destruct the object. More...

virtual bool	hasMasterUserData ()

virtual uint32_t	getUserDataLatency () const

void	setTasks (const uint32_t tasks)

void	postRemove (Object *child)

virtual void	removeChild (const UUID &)

template<class C , class S >
void	commitChild (C child, S sender, uint32_t cmd, const uint32_t incarnation)

template<class C >
void	commitChild (C *child, const uint32_t incarnation)

template<class C , class S >
void	commitChildren (const std::vector< C * > &children, S *sender, uint32_t cmd, const uint32_t incarnation)

template<class C >
void	commitChildren (const std::vector< C * > &children, uint32_t cmd, const uint32_t incarnation)

template<class C >
void	commitChildren (const std::vector< C * > &children, const uint32_t incarnation)

template<class C >
void	syncChildren (const std::vector< C * > &children)

template<class P , class C >
void	releaseChildren (const std::vector< C * > &children)

bool	_cmdSync (co::ICommand &command)

Friends
class	Pipe

class	Channel

Actions
virtual void	flush () const
	Flush outstanding rendering requests. More...

virtual void	finish () const
	Finish outstanding rendering requests. More...

virtual void	swapBuffers ()
	Swap the front and back buffer of the window. More...

virtual void	drawFPS ()
	Render the current framerate as on overlay. More...

float	getFPS () const

virtual void	makeCurrent (const bool cache=true) const
	Make the window's drawable and context current. More...

void	makeCurrentTransfer (const bool cache=true) const

virtual void	bindFrameBuffer () const

virtual void	notifyViewportChanged ()

void	startFrame (const uint32_t frameNumber)
	Start a frame by unlocking all child resources. More...

void	releaseFrame (const uint32_t frameNumber)
	Signal the completion of a frame to the parent. More...

void	releaseFrameLocal (const uint32_t frameNumber)
	Signal the release of the local synchronization to the parent. More...

Callbacks
The callbacks are called by Equalizer during rendering to execute various actions.
virtual bool	processEvent (const Event &event)
	Process a received event. More...

virtual bool	configInit (const uint128_t &initID)
	Initialize this window. More...

virtual bool	configInitSystemWindow (const uint128_t &initID)
	Initialize the OS-specific window. More...

virtual bool	configInitGL (const uint128_t &initID)
	Initialize the OpenGL state for this window. More...

virtual bool	configExit ()
	Exit this window. More...

virtual bool	configExitSystemWindow ()
	De-initialize the OS-specific window. More...

virtual bool	configExitGL ()
	De-initialize the OpenGL state for this window. More...

virtual void	frameStart (const uint128_t &frameID, const uint32_t frameNumber)
	Start rendering a frame. More...

virtual void	frameFinish (const uint128_t &frameID, const uint32_t frameNumber)
	Finish rendering a frame. More...

virtual void	frameDrawFinish (const uint128_t &frameID, const uint32_t frameNumber)
	Finish drawing. More...

Additional Inherited Members
Static Public Member Functions inherited from eq::fabric::Window< Pipe, Window, Channel >
static EQFABRIC_INL const std::string &	getIAttributeString (const IAttribute attr)

Protected Types inherited from eq::fabric::Window< Pipe, Window, Channel >
enum	DirtyBits

Detailed Description

A Window represents an on-screen or off-screen drawable.

A drawable is a 2D rendering surface, typically attached to an OpenGL context. A window uses an SystemWindow implementation to manage the operating system specific handling of window and context creation.

A Window is a child of a Pipe. The task methods for all windows of a pipe are executed in the same pipe thread. All window and subsequent channel task methods are executed in the order the windows are defined on the pipe, with the exception of the swap and finish tasks, which are executed after all windows have been updated. This ensures that all windows of a given pipe swap at the same time.

The default window initialization methods initialize all windows of the same pipe with a shared context, so that OpenGL objects can be reused between them for optimal GPU memory usage. The window facilitates OpenGL object management by providing an ObjectManager for allocating and sharing OpenGL objects.

Please note that each window potentially has its own OpenGL command buffer, thus glFlush is needed to synchronize the state of OpenGL objects between windows. Therefore, Equalizer calls flush() at the end of each frame for each window.

See Also: fabric::Window

Definition at line 63 of file include/eq/client/window.h.

Member Typedef Documentation

typedef BitmapFont eq::Window::Font

Fonts used for overlays.

Version: 1.0

Definition at line 70 of file include/eq/client/window.h.

typedef eq::ObjectManager eq::Window::ObjectManager

The per-window OpenGL object manager.

Version: 1.0

Definition at line 67 of file include/eq/client/window.h.

Constructor & Destructor Documentation

eq::Window::Window ( Pipe * parent )

Construct a new window.

Version: 1.0

virtual eq::Window::~Window ( )

virtual

Destruct the window.

Version: 1.0

Reimplemented from eq::fabric::Window< Pipe, Window, Channel >.

Reimplemented in eqPly::Window, and eVolve::Window.

Member Function Documentation

virtual bool eq::Window::configExit ( )

protectedvirtual

Exit this window.

Version: 1.0

virtual bool eq::Window::configExitGL ( )

inlineprotectedvirtual

De-initialize the OpenGL state for this window.

Version: 1.0

Reimplemented in eqPly::Window.

Definition at line 382 of file include/eq/client/window.h.

Referenced by eqPly::Window::configExitGL().

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virtual bool eq::Window::configExitSystemWindow ( )

protectedvirtual

De-initialize the OS-specific window.

Version: 1.0

Referenced by eqPly::Window::configInitSystemWindow().

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virtual bool eq::Window::configInit ( const uint128_t & initID )

protectedvirtual

Initialize this window.

Parameters

initID the init identifier.

Version: 1.0

Reimplemented in eVolve::Window, and eqPixelBench::Window.

Referenced by eqPixelBench::Window::configInit(), and eVolve::Window::configInit().

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virtual bool eq::Window::configInitGL ( const uint128_t & initID )

protectedvirtual

Initialize the OpenGL state for this window.

Parameters

initID the init identifier.

Returns: true if the initialization was successful, false if not.

Version: 1.0

Reimplemented in eqAsync::Window, eqPly::Window, and eVolve::Window.

Referenced by eqAsync::Window::configInitGL(), and eqPly::Window::configInitGL().

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virtual bool eq::Window::configInitSystemWindow ( const uint128_t & initID )

protectedvirtual

Initialize the OS-specific window.

See Also: setSystemWindow()

Version: 1.0

Reimplemented in eqPly::Window.

Referenced by eqPly::Window::configInitSystemWindow().

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virtual void eq::Window::drawFPS ( )

virtual

Render the current framerate as on overlay.

Version: 1.0

virtual void eq::Window::finish ( ) const

virtual

Finish outstanding rendering requests.

Called before a software swap barrier to ensure that the window will swap directly after the barrier is left.

Version: 1.0

virtual void eq::Window::flush ( ) const

virtual

Flush outstanding rendering requests.

Called at the end of each frame from frameFinish() to ensure timely execution of pending rendering requests.

Version: 1.0

virtual void eq::Window::frameDrawFinish	(	const uint128_t &	frameID,
		const uint32_t	frameNumber
	)

protectedvirtual

Finish drawing.

Called once per frame after the last draw operation. Typically releases the local node thread synchronization for this frame.

Parameters

frameID	the per-frame identifier.
frameNumber	the frame to finished with draw.

Version: 1.0

virtual void eq::Window::frameFinish	(	const uint128_t &	frameID,
		const uint32_t	frameNumber
	)

protectedvirtual

Finish rendering a frame.

Called once at the end of each frame, to do per-frame updates of window-specific data. This method has to call releaseFrame(). The default implementation also flushes all rendering commands. This light-weight call ensures that all outstanding rendering commands for the window's context are being executed in a timely fashion.

Parameters

frameID	the per-frame identifier.
frameNumber	the frame to finish.

Version: 1.0

virtual void eq::Window::frameStart	(	const uint128_t &	frameID,
		const uint32_t	frameNumber
	)

protectedvirtual

Start rendering a frame.

Called once at the beginning of each frame, to do per-frame updates of window-specific data. This method has to call startFrame().

Parameters

frameID	the per-frame identifier.
frameNumber	the frame to start.

Version: 1.0

Reimplemented in eqPly::Window.

Referenced by eqPly::Window::frameStart().

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ClientPtr eq::Window::getClient ( )

Returns: the Client of this window.

Version: 1.0

const Config* eq::Window::getConfig ( ) const

Returns: the Config of this window.

Version: 1.0

Referenced by eqPly::Window::configInitGL().

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Config* eq::Window::getConfig ( )

Returns: the Config of this window.

Version: 1.0

float eq::Window::getFPS ( ) const

inline

Returns: the window's average framerate.

Version: 1.0

Definition at line 231 of file include/eq/client/window.h.

const Font* eq::Window::getMediumFont ( )

Returns: a medium bitmap font used for overlays.

Warning: experimental - may not be supported in the future.

const Node* eq::Window::getNode ( ) const

Returns: the Node of this window.

Version: 1.0

Node* eq::Window::getNode ( )

Returns: the Node of this window.

Version: 1.0

ObjectManager* eq::Window::getObjectManager ( )

inline

Returns: the window's object manager instance.

Version: 1.0

Definition at line 154 of file include/eq/client/window.h.

Referenced by eqPly::Window::configInitGL().

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const ObjectManager* eq::Window::getObjectManager ( ) const

inline

Returns: the window's object manager instance.

Version: 1.0

Definition at line 157 of file include/eq/client/window.h.

bool eq::Window::getRenderContext	(	const int32_t	x,
		const int32_t	y,
		RenderContext &	context
	)		const

Get the last rendering context at the x, y position.

If no render context is found on the given position, false is returned and context is not modified.

Returns: true if a render context was found, false otherwise.

Warning: experimental - may not be supported in the future.

ServerPtr eq::Window::getServer ( )

Returns: the Server of this window.

Version: 1.0

const Window* eq::Window::getSharedContextWindow ( ) const

inline

Returns: the window with which this window shares the GL context.

Version: 1.0

Definition at line 144 of file include/eq/client/window.h.

Window* eq::Window::getSharedContextWindow ( )

inline

Returns: the window with which this window shares the GL context.

Version: 1.0

Definition at line 151 of file include/eq/client/window.h.

const Font* eq::Window::getSmallFont ( )

Returns: a small bitmap font used for overlays.

Warning: experimental - may not be supported in the future.

const SystemPipe* eq::Window::getSystemPipe ( ) const

Returns: the OS-specific pipe implementation.

Version: 1.0

SystemPipe* eq::Window::getSystemPipe ( )

Returns: the OS-specific pipe implementation.

Version: 1.0

const SystemWindow* eq::Window::getSystemWindow ( ) const

inline

Returns: the OS-specific window implementation.

Version: 1.0

Definition at line 270 of file include/eq/client/window.h.

SystemWindow* eq::Window::getSystemWindow ( )

inline

Returns: the OS-specific window implementation.

Version: 1.0

Definition at line 273 of file include/eq/client/window.h.

const GLEWContext* eq::Window::glewGetContext ( ) const

Get the GLEW context for this window.

The glew context is provided and initialized by the SystemWindow, and provides access to OpenGL extensions. This function does not follow the Equalizer naming conventions, since GLEW uses a function of this name to automatically resolve OpenGL function entry points. Therefore, any OpenGL function support by the driver can be directly called from any method of an initialized window.

Returns: the extended OpenGL function table for the window's OpenGL context.

Version: 1.0

Referenced by eVolve::Window::configInitGL().

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bool eq::Window::isRunning ( ) const

inline

Returns: true if this window is running, false otherwise.

Version: 1.0

Definition at line 106 of file include/eq/client/window.h.

bool eq::Window::isStopped ( ) const

inline

Returns: true if this window is stopped, false otherwise.

Version: 1.0

Definition at line 112 of file include/eq/client/window.h.

virtual void eq::Window::makeCurrent ( const bool cache = true ) const

virtual

Make the window's drawable and context current.

GL drivers tend to behave sub-optimally if too many makeCurrent calls happen in a multi-threaded program. When caching is enabled, this method will only call SystemWindow::makeCurrent if it has not been done before for this window on this thread.

Version: 1.3.2

virtual bool eq::Window::processEvent ( const Event & event )

virtual

Process a received event.

The task of this method is to update the window as necessary, and transform the event into an config event to be send to the application using Config::sendEvent().

Parameters

event the received window system event.

Returns: true when the event was handled, false if not.

Version: 1.0

void eq::Window::releaseFrame ( const uint32_t frameNumber )

protected

Signal the completion of a frame to the parent.

Parameters

frameNumber the frame to end.

Version: 1.0

void eq::Window::releaseFrameLocal ( const uint32_t frameNumber )

protected

Signal the release of the local synchronization to the parent.

Parameters

frameNumber the frame to release.

Version: 1.0

void eq::Window::setSharedContextWindow ( Window * sharedContextWindow )

inline

Set the window with which this window shares the OpenGL context.

By default it is set to the first window of the pipe in the window's constructor. The shared context window is used during initialization to setup the OpenGL context and util::ObjectManager.

Version: 1.0

Definition at line 137 of file include/eq/client/window.h.

void eq::Window::setSystemWindow ( SystemWindow * window )

Set the OS-specific window.

The SystemWindow implements the window-system-dependent part, e.g., the drawable creation. This window forwards certain calls, e.g., swapBuffers(), to the SystemWindow. The os-specific window has to be initialized.

Version: 1.0

void eq::Window::startFrame ( const uint32_t frameNumber )

protected

Start a frame by unlocking all child resources.

Parameters

frameNumber the frame to start.

Version: 1.0

virtual void eq::Window::swapBuffers ( )

virtual

Swap the front and back buffer of the window.

Version: 1.0

Reimplemented in eVolve::Window.

Referenced by eVolve::Window::swapBuffers().

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The documentation for this class was generated from the following file:

include/eq/client/window.h

Public Types

Public Member Functions

Protected Member Functions

Friends

Actions

Callbacks

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation