Celestia Forums

Ibook G4 running 10.3.5, and latest Celestia locks up whenever Demo run starts, Showns earth but locks up on way to moon.

That means that bumpmap/vertex shader support is broken in Apple's OpenGL drivers.

Again.

(Celestia does not include a bumpmap for the Earth, but does have one for the Moon.)

You may be able to workaround the problem by disabling Celestia's use of vertex programs:

Edit the file celestia.cfg and remove the # that's at the beginning of the line

# IgnoreGLExtensions [ "GL_ARB_vertex_program" ]

Does this work for you?

You also should report the problem to Apple and try to get patched OpenGL drivers.

selden,
you posted:
//
Edit the file celestia.cfg and remove the # that's at the beginning of the line

# IgnoreGLExtensions [ "GL_ARB_vertex_program" ]

Does this work for you?
//

Well I had the same trouble, the program demo would lock on the way to the moon, and seem to lock whenever a number of view changes were asked for.

So just wanted to let you know your fix seems to have worked like a charm!

Thanks!

Dave Mac ^.^

thanks this fixed the problem