icl::qt::GLContext Class Reference

Shallow Wrapper class around GLX and QGLContext instances. More...

#include <GLContext.h>

List of all members.

Public Types
typedef void *	Handle
	internal handle type
Public Member Functions
	GLContext ()
	creates a null context
	GLContext (Handle handle, bool isGLX, long unsigned int pbuffer=0, Handle display=0)
	create a new context either of type GLXContext or of type QGLContext*
void	makeCurrent () const
	selects the given context (makes it 'current')
bool	isNull () const
	returns whether a context is null
	operator bool () const
	returns whether a contest is no null
bool	operator< (const GLContext &other) const
bool	operator== (const GLContext &other) const
	comparison operator
Static Public Member Functions
static GLContext	currentContext ()
	returns the current context
static void	set_current_glx_context (Handle handle, long unsigned int pbuffer, Handle display)
	sets ths curretn GLXContext
static void	unset_current_glx_context ()
Protected Attributes
Handle	handle
	context handle (either of type QGLContext* or GLXContext)
bool	isGLX
	defines how to interpret handle
long unsigned int	pbuffer
	for GLXContexts only: corresponding pbuffer ID
Handle	display
	for GLXContexts only: current X-Display
Static Protected Attributes
static GLContext	current_glx_context
	static instance (only necessary for GLXContexts)

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Detailed Description

Shallow Wrapper class around GLX and QGLContext instances.

The GLContext class can be used to query the current GLContext activated. Right now, ICL knows two different kinds of GLContexts:

1. QGLContext created by all 3D drawing components
2. GLXContext created for offscreen rendering of scenes

The GLContex class provides a generic access to both types of contexts.

Please note that the GLContext class does right now only work in ICL. It is used in the GLFragmentShader class to determine wheter a given shader has already been compiled and set up for the current active GLContext.

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Member Typedef Documentation

typedef void* icl::qt::GLContext::Handle

internal handle type

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Constructor & Destructor Documentation

icl::qt::GLContext::GLContext

(

)

[inline]

creates a null context

icl::qt::GLContext::GLContext	(	Handle	handle,
		bool	isGLX,
		long unsigned int	pbuffer = 0,
		Handle	display = 0
	)		[inline]

create a new context either of type GLXContext or of type QGLContext*

Actually, this constructor should not be called manually

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Member Function Documentation

static GLContext icl::qt::GLContext::currentContext

(

)

[static]

returns the current context

bool icl::qt::GLContext::isNull

(

)

const [inline]

returns whether a context is null

void icl::qt::GLContext::makeCurrent

(

)

const

selects the given context (makes it 'current')

icl::qt::GLContext::operator bool

(

)

const [inline]

returns whether a contest is no null

bool icl::qt::GLContext::operator<

(

const GLContext &

other

)

const [inline]

bool icl::qt::GLContext::operator==

(

const GLContext &

other

)

const [inline]

comparison operator

static void icl::qt::GLContext::set_current_glx_context	(	Handle	handle,
		long unsigned int	pbuffer,
		Handle	display
	)		[static]

sets ths curretn GLXContext

This is automatically done as long as the scene class instances is rendered into an offscreen rendering context

static void icl::qt::GLContext::unset_current_glx_context

(

)

[static]

This is automatically called when Scene::render is finished and not offscreen rendering contexts are active any more.

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Member Data Documentation

GLContext icl::qt::GLContext::current_glx_context [static, protected]

static instance (only necessary for GLXContexts)

Handle icl::qt::GLContext::display [protected]

for GLXContexts only: current X-Display

Handle icl::qt::GLContext::handle [protected]

context handle (either of type QGLContext* or GLXContext)

bool icl::qt::GLContext::isGLX [protected]

defines how to interpret handle

long unsigned int icl::qt::GLContext::pbuffer [protected]

for GLXContexts only: corresponding pbuffer ID

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

• /home/jenkins/workspace/icl-manual-8.0/icl-manual/ICLQt/src/ICLQt/GLContext.h