A library used to initialize, create, and manage an OpenGL rendering context. More...

#include <GOpenGLSurface.h>

Inheritance diagram for GW::GRAPHICS::GOpenGLSurface:

Public Member Functions
virtual GReturn	GetContext (void **_outContext)=0
	Returns the current OpenGL context. More...

virtual GReturn	GetAspectRatio (float &_outAspectRatio)=0
	Returns the aspect ratio for the current window. More...

virtual GReturn	UniversalSwapBuffers ()=0
	Calls the appropriate method (depending on platform) to swap the front and back buffers. More...

virtual GReturn	QueryExtensionFunction (const char _extension, const char _funcName, void **_outFuncAddress)=0
	Queries if a requested OpenGL extension or function is supported. More...

virtual GReturn	EnableSwapControl (bool _setSwapControl)=0
	Enables or disables v-synchronization in regards to buffer swapping. More...

Public Member Functions inherited from GW::CORE::GListener
virtual GReturn	OnEvent (const GUUIID &_senderInterface, unsigned int _eventID, void *_eventData, unsigned int _dataSize)=0
	This operation is called whenever a GBroadcaster a listener is registered to generates an event. More...

Public Member Functions inherited from GW::CORE::GInterface
virtual GReturn	GetCount (unsigned int &_outCount)=0
	Return the total number of active references to this object. More...

virtual GReturn	IncrementCount ()=0
	Increase the total number of active references to this object. More...

virtual GReturn	DecrementCount ()=0
	Decrease the total number of active references to this object. More...

virtual GReturn	RequestInterface (const GUUIID &_interfaceID, void **_outputInterface)=0
	Requests an interface that may or may not be supported by this object. More...

Detailed Description

A library used to initialize, create, and manage an OpenGL rendering context.

This library automates the creation of a standard OpenGL context, and is capable of accepting special requests that can guide the initialization to support requested options. GOpenGLSurface is a GListener, which allows it to receive events from a registered broadcaster and react accordingly.

Member Function Documentation

◆ EnableSwapControl()

virtual GReturn GW::GRAPHICS::GOpenGLSurface::EnableSwapControl ( bool _setSwapControl )

pure virtual

Enables or disables v-synchronization in regards to buffer swapping.

Parameters

[in] _toggle Determines whether to enable or disable v-sync.

Return values

SUCCESS	The appropriate function was called to enable v-sync.
FEATURE_UNSUPPORTED	The extension required to use this functionality was not supported.
FAILURE	No valid OpenGL context exists.

◆ GetAspectRatio()

virtual GReturn GW::GRAPHICS::GOpenGLSurface::GetAspectRatio ( float & _outAspectRatio )

pure virtual

Returns the aspect ratio for the current window.

Parameters

[out] _outRatio Will contain the calculated aspect ratio.

Return values

SUCCESS	The current aspect ratio was calculated and returned.
FAILURE	No active GWindow exists to calculate an aspect ratio from.

◆ GetContext()

virtual GReturn GW::GRAPHICS::GOpenGLSurface::GetContext ( void ** _outContext )

pure virtual

Returns the current OpenGL context.

Parameters

[out] _outContext Will contain the address of the OpenGL context.

Return values

SUCCESS	The existing OpenGL context was returned.
FAILURE	No OpenGL context exists to retrieve.

◆ QueryExtensionFunction()

virtual GReturn GW::GRAPHICS::GOpenGLSurface::QueryExtensionFunction	(	const char *	_extension,
		const char *	_funcName,
		void **	_outFuncAddress
	)

pure virtual

Queries if a requested OpenGL extension or function is supported.

This funtion accepts either an OpenGL extension or OpenGL function (or both) and searches the total list of supported extensions (generated upon creation of the context) to see if that extension/function is supported. When a function name is queried, this function will return it's appropriate address if supported.

Parameters

[in]	_extension	The exact name of an OpenGL, WGL, or GLX extension.
[in]	_funcName	The exact name of an OpenGL, WGL, or GLX function.
[out]	_outFuncAddress	The address of a function pointer that matches the queried function (_funcName).

Return values

SUCCESS	The extension/function is supported, and the address was returned successfully (if requested).
INVALID_ARGUMENT	This function was called with an incorrect set of parameters.
FAILURE	The requested extension/function is not supported.

◆ UniversalSwapBuffers()

virtual GReturn GW::GRAPHICS::GOpenGLSurface::UniversalSwapBuffers ( )

pure virtual

Calls the appropriate method (depending on platform) to swap the front and back buffers.

Return values

SUCCESS	The front and back buffers were successfully swapped.
FAILURE	No valid OpenGL context exists to perform a buffer swap on.

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

G_Graphics/GOpenGLSurface.h

Public Member Functions

Detailed Description

Member Function Documentation

◆ EnableSwapControl()

◆ GetAspectRatio()

◆ GetContext()

◆ QueryExtensionFunction()

◆ UniversalSwapBuffers()