On 21 Aug 2013, at 13:11, [email protected] wrote:

> Regardless of values is glColor3f, black is the only line colour drawn.
> 
> Suggestions gratefully received.

Do you have lighting enabled? If so you probably want to disable it while 
drawing the lines, and then re-enable it. Or you can lookup glColorMaterial.

Other possibilities (less likely) are a strange blending mode, but I'd start 
with the lighting.

Regards,
James

_______________________________________________
Development mailing list
[email protected]
http://lists.qt-project.org/mailman/listinfo/development

Reply via email to