gistfile1.txt

class Renderer(Widget):
    def __init__(self, fd, **kwargs):
        self.instructions = InstructionGroup()
        self.canvas = RenderContext(compute_normal_mat=True)

        self.mesh1 = RenderContext(compute_normal_mat=True)
        self.mesh1.shader.source = resource_find('shaders/red.glsl')

        self.mesh2 = RenderContext(compute_normal_mat=True)
        self.mesh2.shader.source = resource_find('shaders/blue.glsl')

        self.suzanne = ObjFileLoader(resource_find("data/monkey.obj"))

        self.fd = fd
        super(Renderer, self).__init__(**kwargs)

        self.instructions.add(self.baseGrid())
        self.instructions.add(self.mesh1)
        self.instructions.add(self.mesh2)
        self.canvas.add(self.instructions)


        with self.canvas:
            self.cb = Callback(self.setup_gl_context)
            PushMatrix()
            PopMatrix()
            self.cb = Callback(self.reset_gl_context)
        Clock.schedule_interval(partial(self.update_glsl, fd), 1 / 60.)

        with self.mesh1:
            cb = Callback(self.setup_gl_context)

        with self.mesh2:
            cb = Callback(self.setup_gl_context)

        self.setupScene()