How to make skydome dynamically transparent?

[Tomas]

Script.a=0
Script.mtl=NULL
Script.srf=NULL

function Script:Start()
	self.srf = self.entity:GetSurface(0);
	self.mtl=self.srf:GetMaterial()
end



function Script:UpdateWorld()
	self.mtl:SetColor(255,255,255,self.a)
	self.a=self.a+0.001	
end

That's the lua skydome code I have so far.

It goes from transparent to solid, but theres no texture, just color. If I remove "SetClolor()" the texture is back to place. Any ideas?

 

 

[Tomas]

Finally sorted this out myself. That's the code now:

Script.a=0
Script.mtl=NULL
Script.srf=NULL
Script.col=Vec4()
function Script:Start()
	self.srf = self.entity:GetSurface(0);
	self.mtl=self.srf:GetMaterial()
end



function Script:UpdateWorld()
	self.col=self.mtl:GetColor()
	self.col.r = self.col.r
	self.col.g = self.col.g
	self.col.b = self.col.b
	self.col.a = self.col.a-self.a
	self.mtl:SetColor(self.col)
	self.a=self.a+0.0001	
end