Thanks again.

As for the real reason I needed Marching Cubes on the GPU, my app is at:

https://github.com/sjhalayka/julia4d3​

The hack that I use relies on a stationary camera. The geometry to draw is rotated instead.

const vertex_3 camera_pos(0, 0, -1); // Camera position.
const vertex_3 look_at_pos(0, 0, 0); // Look at position.

Thanks again for your help, you guys!