custom draw gradient function casue huge fps drop

[kem008]

[LUA]function draw.GradientRect(x,y,w,h,color)
gradient = surface.GetTextureID( "gui/gradient.vtf" )
surface.SetDrawColor(color)
surface.SetTexture( gradient )
surface.DrawTexturedRect( x, y, w, h )
-- Sample
--surface.DrawTexturedRect( 0, ScrH()-50, 300, 50 )
end

function draw.GradientRectRotate(x,y,w,h,color)
gradient = surface.GetTextureID( "gui/gradient.vtf" )
surface.SetDrawColor(color)
surface.SetTexture( gradient )
surface.DrawTexturedRectRotated(x-(w/2), y+(h/2), w, h, 180 );
--surface.DrawTexturedRect( x, y, w, h )
-- Sample
--surface.DrawTexturedRect( 0, ScrH()-50, 300, 50 )
end[/LUA]

I created these draw functions by searching in facepunch. Using hudpaint and I get huge fps drop. Any idea to solve it or I should stop using them. I need to gradient because it looks awesome.

[QUOTE]BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id -1
BindTextureToFile: Invalid texture ids -1 -1
SetTextureRGBA: Invalid texture id -1
SetSubTextureRGBA: Invalid texture id -1
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
BindTextureToFile: Invalid texture id for file gui/gradient.vtf
[/QUOTE]
I got that console error now.