glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

I am simply trying to add a textured quad to my program. When I add the following lines I have problems:

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

I can get the texture to show up fine when I use the above code. The problem is for some reason it messes up other things. For instance; lines that appear the proper color without the line suddenly appear different colors or do not show up at all. (Lighting is not turned on).

Did you disable texturing for drawing the lines?

Egads. You are right. Thank you Satan