What can prevent points and lines from being drawn?

Graphics and GPU Programming Programming

2 comments, last by Janju 18 years, 8 months ago

170

Author

July 28, 2005 06:52 AM

With this a triangle is drawn on my screen:

glLoadIdentity();
		glBegin(GL_TRIANGLES);		
			glVertex3d(0,0,-50);
			glVertex3d(10,0,-80);
			glVertex3d(0,20,-30);
		glEnd();

Whe i change it to lines or points nothing is drawn at all on my screen:

glLoadIdentity();
		glPointSize(10.0);
		glBegin(GL_POINT);		
			glVertex3d(0,0,-50);
			glVertex3d(10,0,-80);
			glVertex3d(0,20,-30);
		glEnd();

What goes wrong there?

246

July 28, 2005 07:01 AM

Shouldn't GL_POINT be GL_POINTS?

360

July 28, 2005 07:04 AM

Quote:Original post by Kalasjniekof
Shouldn't GL_POINT be GL_POINTS?

Indeed it should.. I recommend you to use glGetError() to check for errors (it would have returned GL_INVALID_ENUM after that.)

170

Author

July 28, 2005 07:12 AM

glD'Oh

Ok guys, now everything seems right. Thanks for the fast help.

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