how to remove an single post effect from the camera

[Andy90]

Hello, i want to ask how i can remove a single post effect from the camera with lua. I was looking in the documentation but there is only a function to remove all. 

[Josh]

Remove all and add the ones you want back in.

[Andy90]

oh ok  so in this case i write an effect manager script. I will share it tomorrow here if anyone else needs it.

[Andy90]

Here is my effect manager script. It's really simple to use. Just create a pivot in your map and add the script. Then assign your camera to the script.

Script.effects = {}
Script.camera = nil --Entity "Camera";

function Script:Start()
	self:AddEffect("bloom", "Shaders/PostEffects/bloom.lua", true)
	self:AddEffect("ssao", "Shaders/PostEffects/ssao.shader", true)
	self:AddEffect("godrays", "Shaders/PostEffects/godrays.lua", true)
	self:AddEffect("grayscale", "Shaders/PostEffects/grayscale.shader", false)
	self:BuildEffectChain()
end

--Adds a new effect to the effect chain
function Script:AddEffect(name, file, enabled)
	local effect = {
		name = name,
		file = file,
		enabled = enabled
	}
	table.insert(self.effects, effect)
	if enabled then
		self:BuildEffectChain()
	end
	return #self.effects + 1
end

--Disables the effect at position n
function Script:DisableEffect(index)
	if self.effects[index].enabled == true then
		self.effects[index].enabled = false
		self:BuildEffectChain()
	end
end

--Enables the effect at position n
function Script:EnableEffect(index)
	if self.effects[index].enabled == false then
		self.effects[index].enabled = true
		self:BuildEffectChain()
	end
end

--Returns the effect index with the given name
function Script:GetEffectIndex(name)
	for i, item in ipairs(self.effects) do
		if item.name == name then
			return i
		end
	end
end

--Returns the effect with the given name (untested)
function Script:GetEffect(name)
	local effectIndex = self:GetEffectIndex(name);
	return self.effects[effectIndex];
end

-- Rebuils the effect chain
function Script:BuildEffectChain()
	self.camera:ClearPostEffects()
	for i, item in ipairs(self.effects) do
		if item.enabled then
			self.camera:AddPostEffect(item.file)
		end
	end
end

You can call the functions from the script when you assign the pivot as the entity. For example:

and use

local effectIndex = self.effectManager.script:GetEffectIndex("grayscale");
self.effectManager.script:DisableEffect(effectIndex);