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A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
Cross platform OpenGL simulation/game engine based on the SDL libraries. Supports full HDR with deferred shading using multiple render targets under OpenGL. Post-processing effects include depth of field, edge map anti-aliasing, auto-exposure and shadows
Doris is a Lua script driven OpenGL viewer with GUI widget extensions. Lua is a fast, powerful, portable scriptinglanguage. Lua bindings are provided to OpenGL, GLUT, GLUI (a GL widget library) and Luasocket (networking).