sf::Context Class Reference

Class holding a valid drawing context. More...

#include <Context.hpp>

Inheritance diagram for sf::Context:

Public Member Functions
	Context ()
	Default constructor. More...
	~Context ()
	Destructor. More...
bool	setActive (bool active)
	Activate or deactivate explicitly the context. More...
	Context (const ContextSettings &settings, unsigned int width, unsigned int height)
	Construct a in-memory context. More...

Static Public Member Functions
static GlFunctionPointer	getFunction (const char *name)
	Get the address of an OpenGL function. More...

Static Private Member Functions
static void	ensureGlContext ()
	Make sure that a valid OpenGL context exists in the current thread. More...

Detailed Description

Class holding a valid drawing context.

If you need to make OpenGL calls without having an active window (like in a thread), you can use an instance of this class to get a valid context.

Having a valid context is necessary for every OpenGL call.

Note that a context is only active in its current thread, if you create a new thread it will have no valid context by default.

To use a sf::Context instance, just construct it and let it live as long as you need a valid context. No explicit activation is needed, all it has to do is to exist. Its destructor will take care of deactivating and freeing all the attached resources.

Usage example:

void threadFunction(void*)
{
   sf::Context context;
   // from now on, you have a valid context

   // you can make OpenGL calls
   glClear(GL_DEPTH_BUFFER_BIT);
}
// the context is automatically deactivated and destroyed
// by the sf::Context destructor

Definition at line 50 of file Context.hpp.

Constructor & Destructor Documentation

sf::Context::Context

(

)

Default constructor.

The constructor creates and activates the context

sf::Context::~Context

(

)

Destructor.

The destructor deactivates and destroys the context

sf::Context::Context	(	const ContextSettings &	settings,
		unsigned int	width,
		unsigned int	height
	)

Construct a in-memory context.

This constructor is for internal use, you don't need to bother with it.

Parameters

settings	Creation parameters
width	Back buffer width
height	Back buffer height

Member Function Documentation

static GlFunctionPointer sf::Context::getFunction ( const char *  name )

static

Get the address of an OpenGL function.

Parameters

name	Name of the function to get the address of

Returns

Address of the OpenGL function, 0 on failure

bool sf::Context::setActive

(

bool

active

)

Activate or deactivate explicitly the context.

Parameters

active

True to activate, false to deactivate

Returns

True on success, false on failure

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

• Context.hpp