# Prepare the flat framework services
	fun create_flat
	do
		var display = display
		assert display != null

		assert glGetError == gl_NO_ERROR

		# Prepare program
		var program = simple_2d_program
		program.compile_and_link

		var gamnit_error = program.error
		assert gamnit_error == null else print_error gamnit_error

		# Enable blending
		gl.capabilities.blend.enable
		glBlendFunc(gl_ONE, gl_ONE_MINUS_SRC_ALPHA)

		# Enable depth test
		gl.capabilities.depth_test.enable
		glDepthFunc gl_LEQUAL
		glDepthMask true

		# Prepare viewport and background color
		glViewport(0, 0, display.width, display.height)
		glClearColor(0.0, 0.0, 0.0, 1.0)

		assert glGetError == gl_NO_ERROR

		# Prepare to draw
		for tex in all_root_textures do
			tex.load
			gamnit_error = tex.error
			if gamnit_error != null then print_error gamnit_error

			glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MIN_FILTER, gl_LINEAR)
			glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MAG_FILTER, gl_LINEAR)
		end

		sprites.reset
		ui_sprites.reset
	end