Re: [osg-users] wglGetCurrentContext vs osg::GraphicsContext::createGraphicsContext

[Anders Backman]

No one with insight on this?

/Anders


On Fri, Mar 8, 2013 at 11:27 AM, Anders Backman ande...@cs.umu.se wrote:

 Hi all.

 I have a small problem where I
 use  osg::GraphicsContext::createGraphicsContext to create a context for a
 window-widget (in .NET), but I also use another piece of software that
 use wglGetCurrentContext  to check for context.
 But wglGetCurrentContext() returns null for the context that OSG creates.

 My init method:

 bool GraphicsWindow::initOSG( HWND hwnd)
 {
   if (m_viewer.valid())
 return true;

   m_viewer = new osgViewer::Viewer();
   m_viewer-setThreadingModel( osgViewer::ViewerBase::SingleThreaded );
   m_root = new osg::Group;
   m_viewer-setSceneData( m_root.get() );


   m_traits = new osg::GraphicsContext::Traits();
   m_traits-inheritedWindowData = new
 osgViewer::GraphicsWindowWin32::WindowData( hwnd );
   m_traits-setInheritedWindowPixelFormat = true;
   m_traits-doubleBuffer = true;
   m_traits-windowDecoration = true;
   m_traits-sharedContext = NULL;
   m_traits-supportsResize = true;

   RECT rect;
   ::GetWindowRect( hwnd, rect );
   m_traits-x = 0;
   m_traits-y = 0;
   m_traits-width = rect.right - rect.left;
   m_traits-height = rect.bottom - rect.top;

   m_graphicsContext = osg::GraphicsContext::createGraphicsContext(
 m_traits.get() );

m_viewer-getCamera()-setGraphicsContext( m_graphicsContext.get() );
m_viewer-getCamera()-setViewport( new osg::Viewport( 0, 0,
 m_traits-width, m_traits-height ) );
m_viewer-getCamera()-setProjectionMatrixAsPerspective(30.0f,
 static_castdouble(m_traits-width)/static_castdouble(m_traits-height),
 1.0f, 1.0f);


   m_viewer-realize();

   m_viewer-frame();


   assert(wglGetCurrentContext()); // Fails


 I have tried m_graphicsContext-makeCurrent();

 wglGetCurrentContext STILL returns null...

 I know that I'm missing something, question is what?


 /Anders

 --
 __
 Anders Backman, HPC2N
 90187 Umeå University, Sweden
 and...@cs.umu.se http://www.hpc2n.umu.se
 Cell: +46-70-392 64 67




-- 
__
Anders Backman, HPC2N
90187 Umeå University, Sweden
and...@cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

Re: [osg-users] wglGetCurrentContext vs osg::GraphicsContext::createGraphicsContext

[Laurens Voerman]

Hi Anders,
did you try:
m_viewer-setReleaseContextAtEndOfFrameHint(false);
before the call to
m_viewer-frame();

Hope that helps,
Laurens.

On 3/11/2013 11:33 AM, Anders Backman wrote:

No one with insight on this?

/Anders


On Fri, Mar 8, 2013 at 11:27 AM, Anders Backman ande...@cs.umu.se 
mailto:ande...@cs.umu.se wrote:


Hi all.

I have a small problem where I
use  osg::GraphicsContext::createGraphicsContext to create a
context for a window-widget (in .NET), but I also use another
piece of software that use wglGetCurrentContext  to check for
context.
But wglGetCurrentContext() returns null for the context that OSG
creates.

My init method:

bool GraphicsWindow::initOSG( HWND hwnd)
{
  if (m_viewer.valid())
return true;

  m_viewer = new osgViewer::Viewer();
  m_viewer-setThreadingModel(
osgViewer::ViewerBase::SingleThreaded );
  m_root = new osg::Group;
  m_viewer-setSceneData( m_root.get() );


  m_traits = new osg::GraphicsContext::Traits();
  m_traits-inheritedWindowData = new
osgViewer::GraphicsWindowWin32::WindowData( hwnd );
  m_traits-setInheritedWindowPixelFormat = true;
  m_traits-doubleBuffer = true;
  m_traits-windowDecoration = true;
  m_traits-sharedContext = NULL;
  m_traits-supportsResize = true;

  RECT rect;
  ::GetWindowRect( hwnd, rect );
  m_traits-x = 0;
  m_traits-y = 0;
  m_traits-width = rect.right - rect.left;
  m_traits-height = rect.bottom - rect.top;

  m_graphicsContext = osg::GraphicsContext::createGraphicsContext(
m_traits.get() );

   m_viewer-getCamera()-setGraphicsContext(
m_graphicsContext.get() );
   m_viewer-getCamera()-setViewport( new osg::Viewport( 0, 0,
m_traits-width, m_traits-height ) );
 m_viewer-getCamera()-setProjectionMatrixAsPerspective(30.0f,
static_castdouble(m_traits-width)/static_castdouble(m_traits-height),
1.0f, 1.0f);


  m_viewer-realize();

  m_viewer-frame();


  assert(wglGetCurrentContext()); // Fails


I have tried m_graphicsContext-makeCurrent();

wglGetCurrentContext STILL returns null...

I know that I'm missing something, question is what?


/Anders

-- 
__

Anders Backman, HPC2N
90187 Umeå University, Sweden
and...@cs.umu.se mailto:and...@cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67 tel:%2B46-70-392%2064%2067




--
__
Anders Backman, HPC2N
90187 Umeå University, Sweden
and...@cs.umu.se mailto:and...@cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67


___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org


___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

[osg-users] wglGetCurrentContext vs osg::GraphicsContext::createGraphicsContext

[Anders Backman]

Hi all.

I have a small problem where I
use  osg::GraphicsContext::createGraphicsContext to create a context for a
window-widget (in .NET), but I also use another piece of software that
use wglGetCurrentContext  to check for context.
But wglGetCurrentContext() returns null for the context that OSG creates.

My init method:

bool GraphicsWindow::initOSG( HWND hwnd)
{
  if (m_viewer.valid())
return true;

  m_viewer = new osgViewer::Viewer();
  m_viewer-setThreadingModel( osgViewer::ViewerBase::SingleThreaded );
  m_root = new osg::Group;
  m_viewer-setSceneData( m_root.get() );


  m_traits = new osg::GraphicsContext::Traits();
  m_traits-inheritedWindowData = new
osgViewer::GraphicsWindowWin32::WindowData( hwnd );
  m_traits-setInheritedWindowPixelFormat = true;
  m_traits-doubleBuffer = true;
  m_traits-windowDecoration = true;
  m_traits-sharedContext = NULL;
  m_traits-supportsResize = true;

  RECT rect;
  ::GetWindowRect( hwnd, rect );
  m_traits-x = 0;
  m_traits-y = 0;
  m_traits-width = rect.right - rect.left;
  m_traits-height = rect.bottom - rect.top;

  m_graphicsContext = osg::GraphicsContext::createGraphicsContext(
m_traits.get() );

   m_viewer-getCamera()-setGraphicsContext( m_graphicsContext.get() );
   m_viewer-getCamera()-setViewport( new osg::Viewport( 0, 0,
m_traits-width, m_traits-height ) );
   m_viewer-getCamera()-setProjectionMatrixAsPerspective(30.0f,
static_castdouble(m_traits-width)/static_castdouble(m_traits-height),
1.0f, 1.0f);


  m_viewer-realize();

  m_viewer-frame();


  assert(wglGetCurrentContext()); // Fails


I have tried m_graphicsContext-makeCurrent();

wglGetCurrentContext STILL returns null...

I know that I'm missing something, question is what?


/Anders

-- 
__
Anders Backman, HPC2N
90187 Umeå University, Sweden
and...@cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org