gmod rendertargets

fbo_test.lua

local rt1 = GetRenderTarget("TestRT1", 500, 500)
local rt2 = GetRenderTarget("TestRT2", 500, 500)

local rt_mat = Material("models/weapons/v_toolgun/screen")

hook.Add("HUDPaint", "TestRTHook", function()
	render.PushRenderTarget(rt1)
		render.Clear(0, 0, 0, 255)

		cam.Start2D()
			surface.SetDrawColor(HSVToColor(CurTime()*50, 0.95, 0.5))

			local x, y = 250+math.cos(CurTime())*200, 250+math.sin(CurTime())*200
			surface.DrawRect(x-10, y-10, 20, 20)
		cam.End2D()
	render.PopRenderTarget()

	render.PushRenderTarget(rt2)
		render.Clear(0, 0, 0, 255)

		cam.Start2D()
			surface.SetDrawColor(255, 255, 255)
			rt_mat:SetTexture("$basetexture", rt1)
			surface.SetMaterial(rt_mat)
			surface.DrawTexturedRect(100, 100, 300, 300)
		cam.End2D()
	render.PopRenderTarget()

	rt_mat:SetTexture("$basetexture", rt2)
	surface.SetMaterial(rt_mat)
	surface.DrawTexturedRect(100, 100, 500, 500)
end)

1

-i