private fun load_checker(size: Int)
	do
		var cpixels = new CByteArray(3*size*size)

		var i = 0
		for x in [0..size[ do
			var quadrant_x = if x < size/2 then 0 else 1
			for y in [0..size[ do
				var quadrant_y = if y < size/2 then 0 else 1
				var color = if quadrant_x == quadrant_y then
					[0u8, 0u8, 0u8, 255u8]
				else [255u8, 255u8, 255u8, 255u8]

				for j in [0..3[ do cpixels[i+j] = color[j]
				i += 3
			end
		end

		width = size.to_f
		height = size.to_f
		load_from_pixels(cpixels.native_array, size, size, gl_RGB)

		cpixels.destroy
	end