---

local RunService = game:GetService("RunService")
local Lighting = game:GetService("Lighting")

--------------------------------------------------
-- SETTINGS
--------------------------------------------------

local SAMPLE_TIME = 5

local HIGH_FPS = 55
local MEDIUM_FPS = 35

local CHECK_INTERVAL = 2

--------------------------------------------------
-- EFFECTS
--------------------------------------------------

local atmosphere =
	Lighting:WaitForChild("RTXAtmosphere")

local colorCorrection =
	Lighting:WaitForChild("RTXColorCorrection")

local bloom =
	Lighting:WaitForChild("RTXBloom")

local sunRays =
	Lighting:WaitForChild("RTXSunRays")

--------------------------------------------------
-- PERFORMANCE
--------------------------------------------------

local currentQuality = "MEDIUM"

local frames = 0
local elapsed = 0

local averageFPS = 60

--------------------------------------------------
-- QUALITY
--------------------------------------------------

local function setQuality(quality)

	if quality == currentQuality then
		return
	end

	currentQuality = quality

	--------------------------------------------------
	-- HIGH
	--------------------------------------------------

	if quality == "HIGH" then

		atmosphere.Density = 0.18
		atmosphere.Haze = 1.2
		atmosphere.Glare = 0.05

		colorCorrection.Brightness = 0
		colorCorrection.Contrast = 0.08
		colorCorrection.Saturation = 0.05

		bloom.Enabled = true
		bloom.Intensity = 0.08
		bloom.Size = 18

		sunRays.Enabled = true
		sunRays.Intensity = 0.04
		sunRays.Spread = 0.8

	--------------------------------------------------
	-- MEDIUM
	--------------------------------------------------

	elseif quality == "MEDIUM" then

		atmosphere.Density = 0.13
		atmosphere.Haze = 0.8
		atmosphere.Glare = 0.02

		colorCorrection.Brightness = 0
		colorCorrection.Contrast = 0.04
		colorCorrection.Saturation = 0.02

		bloom.Enabled = true
		bloom.Intensity = 0.04
		bloom.Size = 12

		sunRays.Enabled = false

	--------------------------------------------------
	-- LOW
	--------------------------------------------------

	elseif quality == "LOW" then

		atmosphere.Density = 0.08
		atmosphere.Haze = 0.4
		atmosphere.Glare = 0

		colorCorrection.Brightness = 0
		colorCorrection.Contrast = 0
		colorCorrection.Saturation = 0

		bloom.Enabled = false
		sunRays.Enabled = false

	end
end

--------------------------------------------------
-- FPS MEASUREMENT
--------------------------------------------------

RunService.RenderStepped:Connect(function(deltaTime)

	frames += 1
	elapsed += deltaTime

	if elapsed >= SAMPLE_TIME then

		averageFPS =
			frames / elapsed

		frames = 0
		elapsed = 0

	end

end)

--------------------------------------------------
-- QUALITY CHECK
--------------------------------------------------

task.spawn(function()

	task.wait(SAMPLE_TIME)

	while true do

		local fps = averageFPS

		--------------------------------------------------
		-- HIGH
		--------------------------------------------------

		if fps >= HIGH_FPS then

			setQuality("HIGH")

		--------------------------------------------------
		-- MEDIUM
		--------------------------------------------------

		elseif fps >= MEDIUM_FPS then

			setQuality("MEDIUM")

		--------------------------------------------------
		-- LOW
		--------------------------------------------------

		else

			setQuality("LOW")

		end

		task.wait(CHECK_INTERVAL)

	end

end)

--------------------------------------------------
-- START
--------------------------------------------------

setQuality("MEDIUM")