The new version of GeeXLab adds the support of double precision (or fp64) in GLSL shaders. A Julia set rendering demo showing the difference between fp32 and fp64 is also available.
GeeXLab is a tool for quick coding and prototyping of real time 3D scenes (demos, tests, casual games, benchmarks). It is based on widely used standards such as XML, Lua, Python and OpenGL / GLSL. GeeXLab has been designed for developers and technical 3D artists and is available for Windows.