sampler.load('regular')
eye = Vector3(0.0, 10.0, 5.0)
lookat = Vector3(0.0, 0.0, 0.0)
distance = 100.0
camera = Camera(eye, lookat, distance)
camera.load('pinhole')
#intersection
mgr = ShapeManager()
sphere = Sphere(Vector3(0.0, 0.0, 0.0), 2.0, 0)
mgr.add('sph1', sphere)
isector = LinearIsect(mgr)
isector.compile()
isector.prepare(runtimes)
###################
integrator = Integrator()
integrator.load('isect_shader')
sampler.compile()
camera.compile()
sampler.prepare(runtimes)
camera.prepare(runtimes)
integrator.compile([sampler.shader, camera.shader, isector.shader])
integrator.prepare(runtimes)
img = ImagePRGBA(1024, 768)
integrator.shader.set_value('image', img)
