Quaternion Julia Raytracer</b> is the first real-time GPU raytracer for the IPhone 3GS. It renders the quaternion Julia fractal with high accuracy. By modifying the fractal parameters, an unlimited number of complex shapes can be generated.
iGPUTrace is the first real-time raytracer for the IPhone 3GS. It utilizes the PowerVR SGX GPU for raytracing using OpenGL ES 2.0 shaders.