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gamemodes/ixhl2rp/plugins/gratua_visuals/modules/cl_filmgrain.lua

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+--[[
+| This file was obtained through the combined efforts
+| of Madbluntz & Plymouth Antiquarian Society.
+|
+| Credits: lifestorm, Gregory Wayne Rossel JR.,
+| 	Maloy, DrPepper10 @ RIP, Atle!
+|
+| Visit for more: https://plymouth.thetwilightzone.ru/
+--]]
+
+local fg_alpha = CreateClientConVar("pp_filmgrain_alpha", "4", true, false)
+local fg_addalpha = CreateClientConVar("pp_filmgrain_addalpha", "3", true, false)
+
+local NoiseTexture = Material("filmgrain/noise")
+local NoiseTexture2 = Material("filmgrain/noiseadd")
+--[[local NoiseTexture = Material(fg_texture:GetString())
+cvars.AddChangeCallback("pp_filmgrain_texture", function (_, __, ___)
+    NoiseTexture:SetTexture("$basetexture", fg_texture:GetString())
+end)]]
+
+hook.Add("RenderScreenspaceEffects", "FilmGrain", function()
+    if not ix.option.Get("enableFilmGrain", false) then return end
+
+    surface.SetMaterial(NoiseTexture)
+    surface.SetDrawColor(255, 255, 255, fg_alpha:GetInt())
+    surface.DrawTexturedRect(0, 0, ScrW(), ScrH())
+
+    surface.SetMaterial(NoiseTexture2)
+    surface.SetDrawColor(255, 255, 255, fg_addalpha:GetInt()*10)
+    surface.DrawTexturedRect(0, 0, ScrW(), ScrH())
+end)