#:kivy 1.10.1 : Button: text: 'Hello World' pos_hint: {'center_x': .25, 'center_y': .5} size_hint: None, None ScatterImage : size: image.size pos_hint: {'center_x': .75, 'center_y': .5} size_hint: None, None Image: id: image source: 'tex3.jpg' size: self.texture_size : shader_btn: shader_btn shader_widget: shader_widget ShaderWidget: id: shader_widget Button: id: shader_btn text: 'Change fragment shader' size_hint_y: None height: 50