Got the atmospheric scattering working

Well finally managed to get the atmospheric scattering shader, geometry and the shader working properly and its looking pretty nice if i do say so myself. Now i gotta start to add some nicer effect. This may ateka while as this is not on my initial TODO list, as i have to fix the planet LOD first.

Update on what i have been working on

Ok well i have now decided i am going to stick with 6 square clipmaps and morph them in to a sphere, as spherical clipmaps is way beyind my math skills, and also alot more work maybe i will come back to it later on, so far i have managed to get the cube somewhat working and some multitexturing, but still alot of work needed. Its actually quite simple to get the planet its just making it look realistic is the hard part. I have also improved the atmospheric scattering shader a bit, but i cant seem to get the sphere to cull properly im currently working on that , and syncing the clipmap centers too. I have also vastly improved the framerate , by adding some adition optimization to the mesh code.