On Tue, Sep 30, 2008 at 9:35 AM, Doug Coleman <[EMAIL PROTECTED]> wrote:
> Hi Joe,
>
> I'm running x64 Ubuntu 8.04 with a GeForce 8600 GT and the NVIDIA
> driver.  The two required extensions are reported by gl-extensions,
> but the spheres doesn't work.
>
> Running spheres gives me a black spheres window and a popup window saying:

Doug, I did find one problem in the spheres code. NVidia's GLSL
compiler is clever enough to optimize away vertex attributes that
aren't actually used in the linked shader program; this causes the
"surface_color" attribute to disappear in the shader program that
draws the textured sphere (which doesn't need a surface color, seeing
as it uses a texture to color itself), and an OpenGL error gets raised
when the code tries to set that attribute. That doesn't seem at all
related to your framebuffer error, though.

-Joe

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