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FX::FXGLContext Class Reference

A GL context is an object representing the OpenGL state information. More...

#include <FXGLContext.h>

Inheritance diagram for FX::FXGLContext:

FX::FXId FX::FXObject List of all members.

Public Member Functions

 FXGLContext (FXApp *a, FXGLVisual *vis)
 FXGLContext (FXApp *a, FXGLVisual *vis, FXGLContext *shared)
FXbool isShared () const
FXGLVisualgetVisual () const
virtual void create ()
virtual void detach ()
virtual void destroy ()
FXbool begin (FXDrawable *drawable)
FXbool end ()
void swapBuffers ()
void swapSubBuffers (FXint x, FXint y, FXint w, FXint h)
virtual void save (FXStream &store) const
virtual void load (FXStream &store)
virtual ~FXGLContext ()

Detailed Description

A GL context is an object representing the OpenGL state information.

Multiple GL context may share display lists to conserve memory. When drawing multiple windows, it may be advantageous to share not only display lists, but also GL contexts. Since the GL context is created for a certain frame-buffer configuration, sharing of GL contexts is only possible if the windows sharing the GL context all have the same GL visual. However, display lists may be shared between different GL contexts.

Constructor & Destructor Documentation

FX::FXGLContext::FXGLContext FXApp a,
FXGLVisual vis

Construct an OpenGL context with its own private display list.

FX::FXGLContext::FXGLContext FXApp a,
FXGLVisual vis,
FXGLContext shared

Construct an OpenGL context sharing display lists with an existing GL context.

virtual FX::FXGLContext::~FXGLContext  )  [virtual]


Member Function Documentation

FXbool FX::FXGLContext::isShared  )  const

Return TRUE if it is sharing display lists.

FXGLVisual* FX::FXGLContext::getVisual  )  const [inline]

Get the visual.

virtual void FX::FXGLContext::create  )  [virtual]

Create context.

Reimplemented from FX::FXId.

virtual void FX::FXGLContext::detach  )  [virtual]

Detach the server-side resources for this window.

Reimplemented from FX::FXId.

virtual void FX::FXGLContext::destroy  )  [virtual]

Destroy the server-side resources for this window.

Reimplemented from FX::FXId.

FXbool FX::FXGLContext::begin FXDrawable drawable  ) 

Make OpenGL context current prior to performing OpenGL commands.

FXbool FX::FXGLContext::end  ) 

Make OpenGL context non current.

void FX::FXGLContext::swapBuffers  ) 

Swap front and back buffer.

void FX::FXGLContext::swapSubBuffers FXint  x,
FXint  y,
FXint  w,
FXint  h

Copy part of backbuffer to front buffer [Mesa].

virtual void FX::FXGLContext::save FXStream store  )  const [virtual]

Save object to stream.

Reimplemented from FX::FXId.

virtual void FX::FXGLContext::load FXStream store  )  [virtual]

Load object from stream.

Reimplemented from FX::FXId.

Copyright © 1997-2004 Jeroen van der Zijp