Python Raspberry Pi上的Kivy：将提供者从EGL更改为SDL2？

在我的Raspberry Pi上运行Kivy应用程序会得到如下输出：

[INFO   ] [Logger      ] Record log in /home/pi/.kivy/logs/kivy_16-04-26_23.txt
[INFO   ] [Kivy        ] v1.9.2-dev0
[INFO   ] [Python      ] v2.7.9 (default, Mar  8 2015, 00:52:26)
[GCC 4.9.2]
[INFO   ] [Factory     ] 193 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_gif, img_pygame, img_pil (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: pygame
[INFO   ] [Window      ] Provider: egl_rpi
[INFO   ] [GL          ] OpenGL version <OpenGL ES 2.0>
[INFO   ] [GL          ] OpenGL vendor <Broadcom>
[INFO   ] [GL          ] OpenGL renderer <VideoCore IV HW>
[INFO   ] [GL          ] OpenGL parsed version: 2, 0
[INFO   ] [GL          ] Shading version <OpenGL ES GLSL ES 1.00>
[INFO   ] [GL          ] Texture max size <2048>
[INFO   ] [GL          ] Texture max units <8>
[INFO   ] [Shader      ] fragment shader: <Compiled>
[INFO   ] [Shader      ] vertex shader: <Compiled>
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [OSC         ] using <multiprocessing> for socket
[INFO   ] [Base        ] Start application main loop
[INFO   ] [GL          ] NPOT texture support is available

---

我的问题是：如何在Pi上将Kivy的提供程序更改为SDL2？

将以下代码行添加到Python文件的顶部应将提供程序切换为SDL2

import os
os.environ['KIVY_WINDOW'] = 'sdl2'

参考：

我和你有同样的问题，没有显示带有

egl\u rpi

的窗口。我切换到

SDL2

，但应用程序无法加载。我相信这是因为我的3.5英寸SPI显示器有一个定制的驱动程序。也许你的视频驱动程序会更好

import os
os.environ['KIVY_WINDOW'] = 'sdl2'