R: R: [Plib-users] Grrr.... I only get a black screen

[Paolo L. <p.l...@ci...>]

Peter Poulsen wrote:

> Thanks alot! I finally got it working.

Nice to have you on board!

Perhaps the problem was in the lighting. The quad normal is in the same
direction as the light (y-), so enabling lighting produces a black color
over black background. As counterproof try setting the clear color to
non black, re-enable lighting and see if the quad appears black.
Furthermore remember that SSG coordinate system is z-up (x-right,
y-into-the-screen) whilst OpenGL is y-up, so keep it into account when
setting light and camera positions in the world.

Greetings -

Paolo