bgra texture trouble (kivy 1.9.0-dev)

bgra_test.py

import os
os.environ['KIVY_GLES_LIMITS'] = '0'

from cairo import Context, ImageSurface, FORMAT_ARGB32, FONT_SLANT_NORMAL, FONT_WEIGHT_NORMAL
from kivy.app import App
from kivy.core.image import ImageData
from kivy.graphics import Color, Rectangle
from kivy.graphics.opengl_utils import gl_has_texture_format, gl_get_texture_formats, gl_has_texture_native_format
from kivy.graphics.texture import Texture
from kivy.uix.widget import Widget


class MyWidget(Widget):

    def __init__(self, **kwargs):
        super(MyWidget, self).__init__(**kwargs)

        print '*' * 40
        print '\n'.join(repr((x, gl_has_texture_format(x))) for x in gl_get_texture_formats())
        print 'gl_has_texture_native_format("bgra"): {0}'.format(gl_has_texture_native_format('bgra'))
        print '*' * 40

        width, height = 320, 240
        surface = ImageSurface(FORMAT_ARGB32, width, height)
        context = Context(surface)
        context.set_source_rgb(1, .2, .2)
        context.select_font_face("Sans", FONT_SLANT_NORMAL, FONT_WEIGHT_NORMAL)
        context.set_font_size(40)
        context.move_to(50, 120)
        context.show_text('Hello, world!')

        data = bytes(surface.get_data())
        # data = surface.get_data()
        img_data = ImageData(width, height, 'bgra', data)
        # img_data = ImageData(width, height, 'rgba', data)
        texture = Texture.create_from_data(img_data)
        texture.flip_vertical()

        with self.canvas:
            Color(.5, .5, .5)
            Rectangle(size=(640, 480))
            Color(1., 1., 1.)
            Rectangle(pos=(160, 120), size=(width, height), texture=texture)


app = App()
app.root = MyWidget()
app.run()