Blurring a Panel

[Folak]

Hello, I am new to lua and had the unoriginal idea of making a MOTD with a blurred base texture. I'm not sure if this is possible but it would be much obliged if you could help me out in one way or the other.

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[Mikey Howell]

local blur = Material('pp/blurscreen')
local function draw_Blur(panel, amount) 
	local x, y = panel:LocalToScreen( 0, 0 )
	local scrW, scrH = ScrW(), ScrH()
	surface.SetDrawColor( 255, 255, 255 )
	surface.SetMaterial( blur )
	for i = 1, 6 do
		blur:SetFloat('$blur', (i / 6) * (amount ~= nil and amount or 6))
		blur:Recompute()
		render.UpdateScreenEffectTexture()
		surface.DrawTexturedRect(x * -1, y * -1, scrW, scrH)
	end
end

local egFrame = vgui.Create( "DFrame" )
egFrame:SetPos( 100, 100 )
egFrame:SetSize( 300, 300 )
egFrame:SetTitle( "Blur Example" )
egFrame:MakePopup()
egFrame.Paint = function( self, w, h )
    draw_Blur( self, 5 )
    draw.RoundedBox( 0, 0, 0, self:GetWide(), self:GetTall(), Color( 0, 0, 0, 220 ) )
end