-- Things go very bad if the canvas gets too large.
	-- Even though it's in memory, LÖVE seems to use memory in the graphics card to write graphics to it.
	-- If the canvas is too big to fit in graphics card memory, you get an unrecoverable error.
	-- So I try to keep it from getting too large. But with a hard-coded constant because
	-- I don't know how to measure how much graphics memory a computer has.
	-- It might not protect older computers.
	-- This is the place to experiment with if you run into an error about SDL limits and contacting Kartik.
	local w = math.min(16000, Global_viewport.w)
	local h = math.min(16000, Global_viewport.h)
	Canvas = love.graphics.newCanvas(w, h)

  assert(settings.width < 4096 and settings.height < 4096, "You've hit an SDL limit. Please email Kartik at ak@akkartik.com, I'll ask you a couple of questions and create a workaround for you.")