To make this work properly, you''ll have to draw what''s in the sphere first, then draw the faces of the sphere from back to front. Since you''re using a quadric, this second step may be impossible, but you at least need to render the contained object (with depth testing enabled) before the transparent container (with depth testing disabled).

Later,
ZE.

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Need more information. What are your blending parameters and in what order are you rendering the ship and sphere?

EDIT: My own solution for rendering an object enclosed by a transparent object is as follows:

Set blending to GL_SRC_ALPHA and GL_ONE_MINUS_SRC_ALPHA. Next, turn on front-face culling and draw the enclosing, transparent object. This will draw the back of the object only. Next, switch face culling to back-face culling and draw the enclosed object, then the enclosing object again.

[edited by - Ostsol on March 29, 2004 6:56:35 PM]