psychopy/psychopy — pull request #576 by nortcele (2014-04-25 12:15:22+00:00)
Title: Don't draw lines when lineWidth is 0.

The OpenGL function GL.glDrawArrays(GL.GL_LINE_STRIP…) alway draw the line with a width of at least 1. If the line width of a shape stimuli is set to 0 then do not draw the lines.