Editing WoW:API Texture SetDesaturated (section)

{{widgetmethod}}

Sets a texture to be desaturated, to make it greyscale.

 shaderSupported = texture:SetDesaturated(desaturation);

----
;''Arguments''

; desaturation
nil = normal colors<br>
1 = desaturate (greyscale)

----
;''Returns''

; shaderSupported
returns nil if desaturation isn't supported by the user's graphics card (ie. old GeForce4 cards don't). One can use texture:SetVertexColor instead in this case. See the example below for the way Blizzard handles this.

----
There is a wrapper function in UIParent.lua that appears to darken the texture if shaderSupported returns false:

 -- Wrapper for the desaturation function
 function SetDesaturation(texture, desaturation)
 	local shaderSupported = texture:SetDesaturated(desaturation);
 	if ( not shaderSupported ) then
 		if ( desaturation ) then
 			texture:SetVertexColor(0.5, 0.5, 0.5);
 		else
 			texture:SetVertexColor(1.0, 1.0, 1.0);
 		end
 		
 	end
 end