Modern OpenGL context failure [migrated]
- by user209347
OK, I managed to create an OpenGL context with wglcreatecontextattribARB with version 3.2 in my attrib struct (So I have initialized a 3.2 opengl context).
It works, but the strange thing is, when I use glBindBuffer e,g. I still get unreferenced linker error, shouldn't a newer context prevent this?
I'm on windows BTW, Linux doesn't have to deal with older and newer contexts (it directly supports the core of its version).
The code:
PIXELFORMATDESCRIPTOR pfd;
HGLRC tmpRC;
int iFormat;
if (!(hDC = GetDC(hWnd)))
{
CMsgBox("Unable to create a device context. Program will now close.", "Error");
return false;
}
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = attribs->colorbits;
pfd.cDepthBits = attribs->depthbits;
pfd.iLayerType = PFD_MAIN_PLANE;
if (!(iFormat = ChoosePixelFormat(hDC, &pfd)))
{
CMsgBox("Unable to find a suitable pixel format. Program will now close.", "Error");
return false;
}
if (!SetPixelFormat(hDC, iFormat, &pfd))
{
CMsgBox("Unable to initialize the pixel formats. Program will now close.", "Error");
return false;
}
if (!(tmpRC=wglCreateContext(hDC)))
{
CMsgBox("Unable to create a rendering context. Program will now close.", "Error");
return false;
}
if (!wglMakeCurrent(hDC, tmpRC))
{
CMsgBox("Unable to activate the rendering context. Program will now close.", "Error");
return false;
}
strncpy(vers, (char*)glGetString(GL_VERSION), 3);
vers[3] = '\0';
if (sscanf(vers, "%i.%i", &glv, &glsubv) != 2)
{
CMsgBox("Unable to retrieve the OpenGL version. Program will now close.", "Error");
return false;
}
hRC = NULL;
if (glv > 2) // Have OpenGL 3.+ support
{
if ((wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB")))
{
int attribs[] = {WGL_CONTEXT_MAJOR_VERSION_ARB, glv, WGL_CONTEXT_MINOR_VERSION_ARB, glsubv,WGL_CONTEXT_FLAGS_ARB, 0,0};
hRC = wglCreateContextAttribsARB(hDC, 0, attribs);
wglMakeCurrent(NULL, NULL);
wglDeleteContext(tmpRC);
if (!wglMakeCurrent(hDC, hRC))
{
CMsgBox("Unable to activate the rendering context. Program will now close.", "Error");
return false;
}
moderncontext = true;
}
}
if (hRC == NULL)
{
hRC = tmpRC;
moderncontext = false;
}
