(1.8 from 28/8/06, win32, vc7)
Hi all,
I'm trying to do some multithreaded rendering and I run in to a problem
with null gl ids.
Geometry::handleGL seems to be the culprit. In the code below, glNewList
is called with a glid of zero (0). This is not very nice at all, since
it happens more than once.
if(mode == Window::initialize || mode == Window::needrefresh ||
mode == Window::reinitialize)
{
if(mode == Window::initialize)
{
glid = glGenLists(1);
win->setGLObjectId(id, glid);
}
else
{
glid = win->getGLObjectId(id);
}
glNewList(glid, GL_COMPILE);
..
The reason for this is that mode==reinitialize, so the else branch gets
executed. Now, the window doesn't know about this id (for some reason,
maybe that's the real problem) so it returns zero, which means glNewList
will be called with zero. (The warning in Window::getGLObjectID has been
commented out!?!)
I'm trying to render from a thread that did not create the window, but I
think I got the activate (i.e. wglMakeCurrent) calls right, since I get
a window that renders something, it's just not very pretty. (All
geometry is black.)
Any clues?
Cheers,
/Marcus
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