HELP! Windows icons are disappearing!!!

OpenGL OpenGL: Advanced Coding
1

I am writing some code for a research project. I used FLTK to create a simple GUI with a few buttons, a couple of boxes, each of them is used to draw with openGL.
Everything worked fine until yesterday.
I have no clue why this is happening. But when I add the following code to the drawing function of one of the openGL areas, most of the Windows XP SP 2 icons disappear, the top bar of each opened window disappear, even the taskbar at the bottom looses all the icons…

This is the code:

vector<Face*>::iterator iter;
for(iter = gui->app->model->faces->begin(); iter < gui->app->model->faces->end(); iter++) {
     Face *face = *iter;
     Vertex *v0 = gui->app->model->vertices->at(face->vertices->at(0));
     glColor4f(1.0f,1.0f,1.0f,1.0f);
     glBegin(GL_TRIANGLES);
     glNormal3f(face->nx,face->ny,face->nz);
     glVertex3f(v0->x,v0->y,v0->z);
     for(int vi=1; vi<face->vertices->size(); vi++) {
          Vertex* curr = gui->app->model->vertices->at(face->vertices->at(vi));
          glNormal3f(face->nx,face->ny,face->nz);
          glVertex3f(curr->x,curr->y,curr->z);
     }
     glNormal3f(face->nx,face->ny,face->nz);
     glVertex3f(v0->x,v0->y,v0->z);
     glEnd();
}

If I comment out this code, everything works fine.
As a further note, this code, which simple goes through a vector of Face objects (triangles) and draws them on one of the two openGL boxes, worked fine in a previous project…
Has anyone ever seen their Windows icons disappear? Any clue of what is happening?

2

I’ve had some trouble in the last few weeks with nvidia’s 67.22 drivers making all the icons on my desktop disappear - I have to kill explorer and re-run it from task manager.
You didn’t say what hardware you were using, or driver version - nvidia? ati?

3

Mobility Radeon 9000
Driver version 6.14.10.6458

My code had a bug: it was sending too many vertices down the pipeline. The new version:

 	vector<Face*>::iterator iter;
	for(iter = gui->app->model->faces->begin(); iter < gui->app->model->faces->end(); iter++) {
		Face *face = *iter;
		Vertex *v0 = gui->app->model->vertices->at(face->vertices->at(0));
		glColor4f(1.0f,1.0f,1.0f,1.0f);
		glBegin(GL_TRIANGLES);
			glNormal3f(face->nx,face->ny,face->nz);
			glVertex3f(v0->x,v0->y,v0->z);
			for(int vi=1; vi<face->vertices->size(); vi++) {
				Vertex* curr = gui->app->model->vertices->at(face->vertices->at(vi));
				glNormal3f(face->nx,face->ny,face->nz);
				glVertex3f(curr->x,curr->y,curr->z);
			}
			//glNormal3f(face->nx,face->ny,face->nz);
			//glVertex3f(v0->x,v0->y,v0->z);
		glEnd();
	}

works! The two commented line were the one causing the problem apparently. I find weird though that this would affect the Windows Explorer.

thanks for your quick reply!

4

Submit it as a diver bug, you won’t be mistaken :slight_smile: