I can't remember if it ever worked properly on my laptop - it works on
the mac here, so I'll look into it further...
yes, if i remember correctly you had to download and upload the texture
contents to make it work.
the thing is if you upload a texture, the mipmaps are automatically
generated because of this:
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
but this only works if you use glTex(Sub)Image2D() or similar, but won't
work after rendering to the fbo. you have to generate the mipmaps
manually by calling glGenerateMipmapEXT after unbinding the fbo, which
is done in the Unbind function. it would be worth checking out that part
of the code.
best,
gabor
