SbGlContextHelper Namespace Reference

Platform indepent functions for OpenGL context handling. More...

Typedefs
typedef ::Display *	Display
typedef GLXContext	GLContext
typedef void *	VisualInfo
typedef GLXDrawable	Drawable

Functions
GLContext	getCurrentContext ()
	Return the current active context.
Display	getCurrentDisplay ()
	Return the current active display.
Drawable	getCurrentDrawable ()
	Return the current active drawable.
bool	isValidDisplay (Display dpy)
	Return true if the specified display is valid.
VisualInfo	getWindowVisualInfo (Display dpy, Drawable drawable)
	Returns the VisualInfo used for the specified drawable.
VisualInfo	getWindowVisualInfo (Display dpy, Drawable drawable, GLContext ctx)
	Returns the VisualInfo used for the specified drawable.
void	releaseVisualInfo (VisualInfo visualInfo)
	Release a VisualInfo returned by getWindowVisualInfo()
GLContext	createContext (Display dpy, VisualInfo vis, GLContext shareList, bool direct)
	Create a new context.
bool	destroyContext (Display dpy, GLContext ctx)
	Destroy given context.
bool	makeCurrent (Display dpy, Drawable drawable, GLContext ctx)
	Make given context current.
SoINTERNAL GLContext	createContextAttribs (Display dpy, VisualInfo vis, GLContext shareList, bool direct, const std::vector< int > &attribs)
	Create a new context.

Detailed Description

Platform indepent functions for OpenGL context handling.

Typedef Documentation

Display

typedef ::Display* SbGlContextHelper::Display

Definition at line 146 of file SbGlContextHelper.h.

Drawable

typedef GLXDrawable SbGlContextHelper::Drawable

Definition at line 149 of file SbGlContextHelper.h.

GLContext

typedef GLXContext SbGlContextHelper::GLContext

Definition at line 147 of file SbGlContextHelper.h.

VisualInfo

typedef void* SbGlContextHelper::VisualInfo

Definition at line 148 of file SbGlContextHelper.h.

Function Documentation

createContext()

GLContext SbGlContextHelper::createContext	(	Display	dpy,
		VisualInfo	vis,
		GLContext	shareList,
		bool	direct )

Create a new context.

Parameters

dpy	specifies the display (device context on win32)
vis	specifies the visual (must be set to 0 on win32)
shareList	context to sharelist with (0 means no sharing); it is not used on win32, use shareContext for sharing.
direct	set to true for direct rendering (meaningless on win32)

createContextAttribs()

SoINTERNAL GLContext SbGlContextHelper::createContextAttribs	(	Display	dpy,
		VisualInfo	vis,
		GLContext	shareList,
		bool	direct,
		const std::vector< int > &	attribs )

Create a new context.

Parameters

dpy	specifies the display (device context on win32)
vis	specifies the visual (must be set to 0 on win32)
shareList	context to sharelist with (0 means no sharing); it is not used on win32, use shareContext for sharing.
direct	set to true for direct rendering (meaningless on win32)
attribs	holds options for context creation

destroyContext()

bool SbGlContextHelper::destroyContext	(	Display	dpy,
		GLContext	ctx )

Destroy given context.

getCurrentContext()

GLContext SbGlContextHelper::getCurrentContext

(

)

Return the current active context.

getCurrentDisplay()

Display SbGlContextHelper::getCurrentDisplay

(

)

Return the current active display.

getCurrentDrawable()

Drawable SbGlContextHelper::getCurrentDrawable

(

)

Return the current active drawable.

getWindowVisualInfo() [1/2]

VisualInfo SbGlContextHelper::getWindowVisualInfo	(	Display	dpy,
		Drawable	drawable )

Returns the VisualInfo used for the specified drawable.

Use releaseVisualInfo() to free the returned pointer.

getWindowVisualInfo() [2/2]

VisualInfo SbGlContextHelper::getWindowVisualInfo	(	Display	dpy,
		Drawable	drawable,
		GLContext	ctx )

Returns the VisualInfo used for the specified drawable.

Use releaseVisualInfo() to free the returned pointer.

isValidDisplay()

bool SbGlContextHelper::isValidDisplay

(

Display

dpy

)

Return true if the specified display is valid.

makeCurrent()

bool SbGlContextHelper::makeCurrent	(	Display	dpy,
		Drawable	drawable,
		GLContext	ctx )

Make given context current.

Parameters

dpy	specifies the display (device context on win32)
drawable	specifies a drawable (0 on win32)
ctx	specifies the OpenGL context to switch to.

releaseVisualInfo()

void SbGlContextHelper::releaseVisualInfo

(

VisualInfo

visualInfo

)

Release a VisualInfo returned by getWindowVisualInfo()