which graphics cards support openGL

[jmboctor]

Is there some kind on function or code and let us know if the the graphics card installed in the computer supports openGL?

thanx for any input
Joe

[Serge K]

If you mean the "hardware" support for OpenGL, and you work in a Windows, you can use this function:

// hDC : a handle to the device context that is associated with the current OpenGL rendering context
bool Check4hwOpenGL( HDC hDC )
{
int iPixelFormat = GetPixelFormat(hDC);

PIXELFORMATDESCRIPTOR pfd;

DescribePixelFormat( hDC, iPixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
return !(pfd.dwFlags & PFD_GENERIC_FORMAT);
}

[jmboctor]

but if I am using glutCreateWindow to create a window, how can I get a handle to the device context type HDC? to pass it to my check4 procedure?

thnx for any input
Joe



Originally posted by Serge K:
If you mean the "hardware" support for OpenGL, and you work in a Windows, you can use this function:

// hDC : a handle to the device context that is associated with the current OpenGL rendering context
bool Check4hwOpenGL( HDC hDC )
{
int iPixelFormat = GetPixelFormat(hDC);

PIXELFORMATDESCRIPTOR pfd;

DescribePixelFormat( hDC, iPixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
return !(pfd.dwFlags & PFD_GENERIC_FORMAT);
}

[Serge K]

The wglGetCurrentDC function obtains a handle to the device context that is associated with the current OpenGL rendering context of the calling thread.

HDC wglGetCurrentDC(VOID);

[jmboctor]

Thnx a lot for u'r help