OpenGL RC Sharing (wglShareList)

[SimpleMan]

Hi,
I'm using wglShareList to share color beetween two rendering contexts. I'm using MFC Doc/View in VS2010 C++. Here is what i was code:

View:

 
int CProcKLView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
...
	hRCChild1 = wglCreateContext(m_pCDC->GetSafeHdc());			
	GetDocument()->ContextShareList(hRCChild1);
 
	wglMakeCurrent(m_pCDC->GetSafeHdc(), hRCChild1);						
 
...
}

In Doc i have:

CProcKLDoc::CProcKLDoc()
{
	m_hRC = NULL;
	CreateVirtualWindow(m_hRC);
 
}
 
...
 
void CProcKLDoc::ContextShareList(HGLRC hRCshare)
{
	HGLRC shareCtx = hRCshare;
 
	if(shareCtx!=0) {
		wglShareLists(shareCtx, m_hRC);
		wglMakeCurrent(m_hDCV,m_hRC);
		Colorize();
	}
}
 
void CProcGLDoc::CreateVirtualWindow(HGLRC &hRC)
{
 
		CFrameWnd* pWnd = new CFrameWnd();
		pWnd->Create(NULL, NULL);
		m_hDCV = pWnd->GetDC()->GetSafeHdc();
		m_pDCV = pWnd->GetDC();
 
		SetupPixelFormat();
		hRC = wglCreateContext(m_hDCV);
 
}

As you see i have two windows. One is virtual and there is a "parent" rendering context. Child is create in the view.

I have true from sharelist and pixelformat is the same for both context. So... can I share context between two windows?

[V-man]

can I share context between two windows?

You sure can if true from wglShareLists.

[dukey]

assuming the windows are the same pixel format, it should work

[SimpleMan]

But it's ok when one is a CMDIFrameWnd and the other is CMDIChildWnd ?

[V-man]

yup

[SimpleMan]

Thx. It works in Doc/View, but if i want to open another view in the same doc it crash.

View:

	int CoglmfcView::OnCreate(LPCREATESTRUCT lpCreateStruct)
	{
		if (CView::OnCreate(lpCreateStruct) == -1)
			return -1;
 
		hDC = ::GetDC(m_hWnd);
 
		GetDocument()->SetDCPixelFormat(hDC);		
		hRC = wglCreateContext(hDC);
 
		GetDocument()->ShareContext(hDC,hRC);
		wglMakeCurrent(hDC, hRC);
		//GetDocument()->InitDocTexture();
		InitOpenGL();
 
		return 0;
	}

InDoc:

void CoglmfcDoc::ShareContext(HDC ihDC, HGLRC ihRC)
{
	wglShareLists(ihRC, p_hRC);
	wglMakeCurrent(p_hDCV, p_hRC);
	//if(TextureExist == 0)
		InitDocTexture();
	//TextureExist = 1;
 
	wglMakeCurrent(NULL,NULL);
}
 
 
void CoglmfcDoc::CreateParentRC()
{
	CFrameWnd* pWnd = new CFrameWnd();
 
	pWnd->Create(NULL, NULL);
	p_hDCV = pWnd->GetDC()->GetSafeHdc();
	p_pDCV = pWnd->GetDC();
 
	SetDCPixelFormat(p_hDCV);
	p_hRC = wglCreateContext(p_hDCV);
}

CreateParentRC() i call in Doc constructor. InitDocTexture() put texture on my model and it's works, but not for different view.