This gist show how to build a scrolling and repeating background with kivy

Ground_(front_layer).png

main.py

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.clock import Clock
from kivy.graphics import Rectangle
from kivy.core.image import Image as CoreImage
from kivy.core.window import Window


class MyWidget(Widget):
    def __init__(self, **kw):
        super(MyWidget, self).__init__(**kw)

        with self.canvas:
            texture = CoreImage('Sky_back_layer.png').texture
            texture.wrap = 'repeat'
            self.rect_1 = Rectangle(texture=texture, size=self.size, pos=self.pos)

            texture = CoreImage('Vegetation_(middle_layer).png').texture
            texture.wrap = 'repeat'
            self.rect_2 = Rectangle(texture=texture, size=self.size, pos=self.pos)

            texture = CoreImage('Ground_(front_layer).png').texture
            texture.wrap = 'repeat'
            self.rect_3 = Rectangle(texture=texture, size=self.size, pos=self.pos)

        Clock.schedule_interval(self.txupdate, 0)

    def txupdate(self, *l):
        t = Clock.get_boottime()
        #print t
        self.rect_1.tex_coords = -(t * 0.001), 0, -(t * 0.001 + 10), 0,  -(t * 0.001 + 10), -10, -(t * 0.001), -10
        self.rect_2.tex_coords = -(t * 0.01), 0, -(t * 0.01 + 1), 0,  -(t * 0.01 + 1), -1, -(t * 0.01), -1
        self.rect_3.tex_coords = -(t * 0.1), 0, -(t * 0.1 + 1), 0,  -(t * 0.1 + 1), -1, -(t * 0.1), -1


class MyApp(App):
    def build(self):
        return MyWidget(size=Window.size)


if __name__ == '__main__':
    MyApp().run()

Sky_back_layer.png

Vegetation_(middle_layer).png

@chaaken: hey, the repeats simply works because of the w and h factors in the equation i posted below, since it's between e.g 0.001 it means at 0.1% of the rect, it'll have already used the whole width/height of the texture, so what happens after that depends on the wrap mode, since i set repeat, it'll start over, there are other modes that for example just continue with the same pixel value as the last one, but on its own, the mode is not enough, you also need the tex_coords value that make it wrap.