snapshot_canvas = function()
	-- Render the canvas at pixel perfect resolution.
	local winw,winh = App.screen.width, App.screen.height
	App.screen.width,App.screen.height = Global_viewport.w, Global_viewport.h
	local saved_viewport = Viewport
	Viewport = copy_viewport(Global_viewport)
	Viewport.zoom = 1.0
	A()
	Canvas = love.graphics.newCanvas(Global_viewport.w, Global_viewport.h)
	love.graphics.setCanvas(Canvas)
	App.fake_key_press = true  -- Hack; disable drawing the menu and ticks
	on.draw()
	App.fake_key_press = nil
	love.graphics.setCanvas()
	Viewport = saved_viewport
	App.screen.width,App.screen.height = winw,winh
end